/* WifNet — site styles */
:root{
  --bg:#ffffff; --surface:#f5f8fb; --surface-2:#eef3f8;
  --ink:#0b1220; --body:#2a3644; --muted:#5d6e80;
  --line:#e2e9f1; --accent:#0d9488; --accent-ink:#ffffff;
  --accent-soft:#e6f6f4; --cyan:#0891b2;
  --radius:16px; --radius-lg:26px;
  --shadow:0 1px 2px rgba(11,18,32,.06),0 12px 30px -18px rgba(11,18,32,.25);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
html[data-theme="dark"]{
  --bg:#0b1220; --surface:#111c2b; --surface-2:#16243a;
  --ink:#f1f5f9; --body:#c3cfdd; --muted:#93a4b8;
  --line:#1e2c3f; --accent:#2dd4bf; --accent-ink:#062623;
  --accent-soft:#0e2b2a; --cyan:#22d3ee;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 40px -24px rgba(0,0,0,.8);
}
*,*::before,*::after{box-sizing:border-box}
/* author display rules (.btn etc.) would otherwise beat the UA [hidden] rule */
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--body);
  font-family:var(--sans);font-size:17px;line-height:1.68;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration-thickness:1.5px;text-underline-offset:3px}
a:hover{text-decoration-style:wavy}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.6vw,3.05rem);font-weight:800}
h2{font-size:clamp(1.4rem,2.6vw,1.95rem);font-weight:750;margin-top:2.2em}
h3{font-size:1.18rem;font-weight:700;margin-top:1.8em}
p{margin:0 0 1.1em}
strong{color:var(--ink)}
hr{border:0;border-top:1px solid var(--line);margin:2.5em 0}
small,.small{font-size:.875rem}
.muted{color:var(--muted)}
.center{text-align:center}
.wrap{width:100%;max-width:1120px;margin-inline:auto;padding-inline:22px}
.wrap-narrow{width:100%;max-width:820px;margin-inline:auto;padding-inline:22px}

/* skip link */
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--accent-ink);
  padding:12px 18px;border-radius:0 0 12px 0;z-index:99;font-weight:700}
.skip:focus{left:0}

/* header */
.site-head{
  position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 86%,transparent);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
}
.head-inner{display:flex;align-items:center;gap:18px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;
  color:var(--ink);font-size:1.18rem;letter-spacing:-.03em}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;
  background:linear-gradient(140deg,var(--accent),var(--cyan));color:#fff}
.brand-name span{color:var(--accent)}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a{
  text-decoration:none;color:var(--body);font-weight:600;font-size:.94rem;
  padding:9px 13px;border-radius:10px;
}
.nav a:hover{background:var(--surface);color:var(--ink)}
.nav a[aria-current="page"]{color:var(--accent);background:var(--accent-soft)}
.theme-btn,.menu-btn{
  background:transparent;border:1px solid var(--line);color:var(--body);cursor:pointer;
  border-radius:10px;display:grid;place-items:center;
}
.theme-btn{width:38px;height:38px;margin-left:6px}
.theme-btn:hover{background:var(--surface);color:var(--ink)}
.menu-btn{display:none;width:42px;height:42px;gap:4px;padding:11px}
.menu-btn span{display:block;width:100%;height:2px;background:currentColor;border-radius:2px;transition:.2s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 82% -10%,color-mix(in srgb,var(--accent) 26%,transparent),transparent 70%),
    radial-gradient(700px 380px at 4% 110%,color-mix(in srgb,var(--cyan) 20%,transparent),transparent 70%),
    var(--surface);
  border-bottom:1px solid var(--line);
}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
  padding-block:clamp(38px,6vw,76px)}
.pill{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.02em;
  text-transform:uppercase;color:var(--accent);background:var(--accent-soft);
  border:1px solid color-mix(in srgb,var(--accent) 25%,transparent);
  padding:6px 12px;border-radius:999px;margin-bottom:18px;
}
.hero h1{margin-bottom:.4em}
.lede{font-size:1.14rem;color:var(--body);max-width:60ch;line-height:1.62}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 18px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:var(--accent-ink);text-decoration:none;
  font-weight:700;padding:13px 22px;border-radius:12px;border:1px solid transparent;
  transition:transform .15s ease,box-shadow .15s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px -12px color-mix(in srgb,var(--accent) 70%,transparent)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface);box-shadow:none}
.hero-art{position:relative;display:grid;place-items:center;min-height:260px}
.signal{position:absolute;inset:0;display:grid;place-items:center}
.signal i{
  position:absolute;border:2px solid color-mix(in srgb,var(--accent) 45%,transparent);
  border-radius:50%;animation:pulse 3.6s ease-out infinite;
}
.signal i:nth-child(1){width:110px;height:110px;animation-delay:0s}
.signal i:nth-child(2){width:190px;height:190px;animation-delay:.5s}
.signal i:nth-child(3){width:270px;height:270px;animation-delay:1s}
.signal i:nth-child(4){width:350px;height:350px;animation-delay:1.5s}
@keyframes pulse{0%{opacity:.9;transform:scale(.86)}70%{opacity:0;transform:scale(1.05)}100%{opacity:0}}
@media (prefers-reduced-motion:reduce){.signal i{animation:none;opacity:.35}}
.speed-card{
  position:relative;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px 26px;box-shadow:var(--shadow);display:grid;gap:4px;min-width:250px;
}
.speed-card strong{font-size:2.6rem;line-height:1;letter-spacing:-.04em}
.speed-card .bar{height:6px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin:10px 0 6px}
.speed-card .bar span{display:block;height:100%;border-radius:99px;
  background:linear-gradient(90deg,var(--accent),var(--cyan))}

/* strips + blocks */
.strip{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding-block:34px}
.strip-item{border-left:3px solid var(--accent);padding-left:14px;display:grid;gap:2px}
.strip-item strong{font-size:1.05rem}
.block{padding-block:44px}
.block-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
.block-head h2{margin:0}
.link-more{text-decoration:none;font-weight:700;font-size:.94rem;white-space:nowrap}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px}
.card{
  display:flex;flex-direction:column;gap:8px;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;text-decoration:none;color:inherit;
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 45%,var(--line));box-shadow:var(--shadow)}
.card h3{margin:6px 0 0;font-size:1.12rem;color:var(--ink)}
.card p{margin:0;font-size:.95rem;color:var(--muted)}
.card-foot{margin-top:auto;padding-top:12px;font-size:.85rem;font-weight:700;color:var(--accent)}
.chip{
  align-self:flex-start;font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;
  color:var(--accent);background:var(--accent-soft);padding:4px 9px;border-radius:6px;
}

/* hub */
.hub-head{padding-block:26px 6px;max-width:70ch}
.hub-head h1{margin-bottom:.3em}
.prose-wide{max-width:70ch;color:var(--body)}

/* article */
.crumbs{margin:22px 0 8px;font-size:.85rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--muted)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.post-head{padding-block:8px 22px;border-bottom:1px solid var(--line);margin-bottom:30px}
.post-head h1{margin:.35em 0 .35em}
.meta-line{font-size:.875rem;color:var(--muted);margin:0}
.dot{margin:0 6px}
.prose-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:44px;align-items:start}
.prose{min-width:0}
.prose h2{margin-top:1.9em;padding-top:.2em}
.prose h3{font-size:1.1rem}
.prose ul,.prose ol{padding-left:1.25em;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--accent)}
.prose blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:4px solid var(--accent);
  background:var(--surface);border-radius:0 12px 12px 0;color:var(--ink);
}
.prose blockquote p:last-child{margin:0}
.prose code{font-family:var(--mono);font-size:.9em;background:var(--surface-2);padding:2px 6px;border-radius:6px;color:var(--ink)}
.prose pre{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;overflow:auto}
.prose pre code{background:none;padding:0}
.prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.95rem}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:11px 12px;text-align:left;vertical-align:top}
.prose thead th{background:var(--surface);color:var(--ink);font-size:.85rem;text-transform:uppercase;letter-spacing:.04em}
.prose tbody tr:hover{background:var(--surface)}
.prose img{border-radius:12px;border:1px solid var(--line)}
.prose > p:first-of-type{font-size:1.06rem}

/* toc */
.toc{position:sticky;top:92px;font-size:.88rem;border-left:1px solid var(--line);padding-left:18px}
.toc h2{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}
.toc ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.toc ul ul{padding-left:12px;margin-top:7px;gap:5px}
.toc a{color:var(--body);text-decoration:none}
.toc a:hover{color:var(--accent);text-decoration:underline}

/* faq */
.faq{margin-top:2.6em;border-top:1px solid var(--line);padding-top:1em}
.faq details{border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px;background:var(--bg)}
.faq details[open]{background:var(--surface)}
.faq summary{cursor:pointer;font-weight:700;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq-a{padding-top:10px;font-size:.96rem}
.faq-a p:last-child{margin-bottom:0}

/* related */
.related{margin-top:56px;border-top:1px solid var(--line);padding-top:26px}
.related h2{font-size:1.2rem;margin-top:0}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.rel-card{
  display:grid;gap:5px;padding:16px;border:1px solid var(--line);border-radius:14px;
  text-decoration:none;color:inherit;background:var(--surface);
}
.rel-card:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.rel-eyebrow{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);font-weight:800}
.rel-card strong{color:var(--ink);font-size:.98rem;line-height:1.35}

/* comparison table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg)}
table.cmp{width:100%;border-collapse:collapse;font-size:.95rem;min-width:640px}
table.cmp th,table.cmp td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.cmp thead th{background:var(--surface);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
table.cmp tbody tr:last-child th,table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp tbody th{color:var(--ink);font-weight:700}
table.cmp a{font-weight:700;text-decoration:none}
table.cmp a:hover{text-decoration:underline}

/* split block */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
  border-top:1px solid var(--line);padding-block:52px}
.split h2{margin-top:0}
.split-list{display:grid;gap:16px}
.mini{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--surface)}
.mini strong{display:block;margin-bottom:2px}
.mini p{margin:0}

/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--surface);margin-top:60px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px;padding-block:44px}
.foot-h{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 12px}
ul.plain{list-style:none;margin:0;padding:0;display:grid;gap:8px}
ul.plain a{text-decoration:none;color:var(--body);font-size:.94rem}
ul.plain a:hover{color:var(--accent);text-decoration:underline}
.brand-foot{margin-bottom:10px}
.foot-bot{border-top:1px solid var(--line);padding-block:18px}
.foot-bot p{margin:0}

/* responsive */
@media (max-width:980px){
  .prose-layout{grid-template-columns:1fr}
  .toc{display:none}
  .hero-inner{grid-template-columns:1fr;gap:26px}
  .hero-art{min-height:210px}
  .split{grid-template-columns:1fr;gap:24px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .menu-btn{display:grid}
  .nav{
    position:fixed;inset:68px 0 auto 0;margin:0;flex-direction:column;align-items:stretch;
    background:var(--bg);border-bottom:1px solid var(--line);padding:14px 22px 22px;
    gap:2px;display:none;box-shadow:var(--shadow);
  }
  .nav.open{display:flex}
  .nav a{padding:12px 10px;font-size:1rem}
  .theme-btn{margin:8px 0 0;width:100%}
  .strip{grid-template-columns:1fr;gap:14px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .block{padding-block:34px}
}
@media print{.site-head,.site-foot,.toc,.related,.hero-art{display:none}}

/* speed test tool */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0}
.speedtest{margin:0 0 40px}
.st-panel{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:
    radial-gradient(620px 240px at 86% -20%,color-mix(in srgb,var(--accent) 18%,transparent),transparent 70%),
    var(--surface);
  padding:clamp(18px,3vw,30px);box-shadow:var(--shadow);
}
.st-top{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between}
.st-top .pill{margin:0}
.st-dial{display:grid;gap:6px;text-align:center;padding:16px 0 6px}
.st-num{font-variant-numeric:tabular-nums;line-height:.95;letter-spacing:-.05em;
  color:var(--ink);font-weight:800;font-size:clamp(3rem,11vw,5.2rem)}
.st-unit{font-size:.95rem;font-weight:700;color:var(--muted);margin-left:10px;
  letter-spacing:.06em;text-transform:uppercase}
.st-phase{font-size:.92rem;color:var(--muted);min-height:1.5em}
.st-bar{height:8px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin:14px 0 2px}
.st-bar span{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--accent),var(--cyan));transition:width .3s linear}
.st-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:18px 0 0}
.st-stat{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--bg)}
.st-stat span{display:block;font-size:.72rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.07em;color:var(--muted)}
.st-stat strong{display:block;font-size:1.5rem;line-height:1.2;color:var(--ink);
  font-variant-numeric:tabular-nums}
.st-stat small{font-size:.74rem;color:var(--muted)}
.st-controls{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;margin-top:18px}
.st-controls label{display:grid;gap:5px;font-size:.74rem;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:.06em}
.st-controls input{
  font:inherit;font-size:1rem;font-weight:600;text-transform:none;letter-spacing:0;
  color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;
  padding:10px 12px;width:160px;
}
.st-controls input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.st-controls .btn{border:0;cursor:pointer;font-family:inherit;font-size:1rem}
.st-controls .btn[disabled]{opacity:.6;cursor:progress;transform:none;box-shadow:none}
.st-note{max-width:70ch;margin:14px 0 0}
.st-verdict{margin-top:18px;border-top:1px solid var(--line);padding-top:16px;font-size:.97rem}
.st-verdict p:last-child{margin-bottom:0}
.st-verdict.is-error{border-top-color:color-mix(in srgb,var(--cyan) 45%,var(--line))}
@media (max-width:640px){
  .st-stats{grid-template-columns:1fr 1fr}
  .st-controls{display:grid;grid-template-columns:1fr}
  .st-controls input{width:100%}
  .st-controls .btn{width:100%}
}

/* language switch: EN | BM */
.lang-switch{display:inline-flex;align-items:center;justify-content:center;min-width:2.4rem;
padding:.3rem .55rem;border:1px solid var(--line,#2b3a4a);border-radius:999px;
font-size:.78rem;font-weight:600;letter-spacing:.04em;color:inherit;text-decoration:none}
.lang-switch:hover{border-color:var(--accent,#22d3ee);color:var(--accent,#22d3ee)}