/* SimCheck.pk design system — no framework, ~10KB */
:root{
  --blue:#0875D1;--blue-dark:#103B63;--green:#16A36A;--bg:#F7F9FC;--surface:#FFFFFF;--text:#202B3C;
  --muted:#5B6678;--border:#E2E8F0;--soft-blue:#E8F2FC;--soft-green:#E6F6EF;--warn-bg:#FFF7E6;--warn:#9A6200;--danger:#C53030;
  --radius:14px;--shadow:0 1px 2px rgba(16,59,99,.06),0 6px 24px rgba(16,59,99,.07);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",Arial,sans-serif;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --blue:#4BA3F0;--blue-dark:#0B1F33;--green:#34C489;--bg:#0D1520;--surface:#152131;--text:#E6EDF6;
  --muted:#9AA8BB;--border:#24344A;--soft-blue:#16304A;--soft-green:#123628;--warn-bg:#2E2412;--warn:#F2C26B;--danger:#FC8181;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 24px rgba(0,0,0,.25);color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;font-size:16px;transition:background .25s,color .25s}
img,svg{max-width:100%;display:block}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration:none}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .6em;color:var(--text);letter-spacing:-.01em}
h1{font-size:clamp(1.8rem,4.5vw,2.75rem);font-weight:800}
h2{font-size:clamp(1.35rem,3vw,1.85rem);font-weight:750;margin-top:1.6em}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1em}
ul,ol{padding-left:1.25rem}
li{margin:.3em 0}
code,kbd{font-family:ui-monospace,Consolas,monospace;background:var(--soft-blue);color:var(--blue-dark);padding:.1em .4em;border-radius:6px;font-size:.92em}
[data-theme="dark"] code,[data-theme="dark"] kbd{color:var(--text)}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 16px}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px;top:0;background:var(--blue);color:#fff;padding:.5rem 1rem;z-index:100}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:saturate(1.6) blur(10px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;gap:1rem;height:64px}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.15rem;color:var(--text);text-decoration:none;margin-right:auto}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--green));display:grid;place-items:center;color:#fff}
.brand span b{color:var(--blue)}
.nav-links{display:flex;gap:.15rem;list-style:none;margin:0;padding:0}
.nav-links a{display:block;padding:.45rem .7rem;border-radius:8px;color:var(--text);text-decoration:none;font-size:.94rem;font-weight:550;white-space:nowrap}
.nav-links a:hover,.nav-links a[aria-current="page"]{background:var(--soft-blue);color:var(--blue)}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);display:grid;place-items:center;cursor:pointer;flex:none}
.icon-btn:hover{border-color:var(--blue);color:var(--blue)}
.menu-btn{display:none}
.theme-btn .moon{display:none}
[data-theme="dark"] .theme-btn .sun{display:none}
[data-theme="dark"] .theme-btn .moon{display:block}
@media (max-width:1020px){
  .menu-btn{display:grid}
  .nav-links{position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--border);padding:.5rem 16px 1rem;box-shadow:var(--shadow);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:.75rem .8rem;font-size:1rem}
}

/* Hero */
.hero{background:radial-gradient(1200px 400px at 85% -10%,color-mix(in srgb,var(--green) 22%,transparent),transparent),linear-gradient(160deg,var(--blue-dark),#0A5AA3 70%,var(--blue));color:#fff;padding:3.5rem 0 4.5rem}
.hero h1{color:#fff;max-width:18ch}
.hero p.lead{font-size:1.12rem;max-width:60ch;opacity:.92}
.hero .badges{display:flex;flex-wrap:wrap;gap:.5rem;margin:1.25rem 0 1.75rem}
.badge{display:inline-flex;align-items:center;gap:.35rem;font-size:.82rem;font-weight:600;padding:.3rem .7rem;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22)}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:2.5rem;align-items:center}
.hero-card{background:var(--surface);color:var(--text);border-radius:18px;padding:1.4rem;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.hero-card h2{font-size:1.1rem;margin:0 0 .8rem}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero{padding:2.5rem 0 3rem}}
.page-hero{background:linear-gradient(160deg,var(--blue-dark),#0A5AA3);color:#fff;padding:2rem 0 2.4rem}
.page-hero h1{color:#fff;margin-bottom:.4rem}
.page-hero p{opacity:.9;max-width:65ch;margin:0}

/* Breadcrumbs */
.crumbs{font-size:.85rem;margin-bottom:.8rem}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.3rem}
.crumbs li{margin:0;opacity:.85}
.crumbs li+li::before{content:"›";margin-right:.3rem}
.crumbs a{color:#fff}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;padding:.72rem 1.15rem;border-radius:10px;font-weight:650;font-size:.97rem;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:transform .15s,background .2s,box-shadow .2s;min-height:44px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#0663B2;box-shadow:0 6px 18px color-mix(in srgb,var(--blue) 35%,transparent)}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:#12895A}
.btn-ghost{background:transparent;color:var(--blue);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--blue)}
.btn-light{background:#fff;color:var(--blue-dark)}
.btn-outline-light{border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1)}
.btn-row{display:flex;flex-wrap:wrap;gap:.6rem}

/* Sections & cards */
main{display:block}
.section{padding:3rem 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;flex-wrap:wrap;margin-bottom:1.4rem}
.section-head h2{margin:0}
.section-head p{margin:.3rem 0 0;color:var(--muted)}
.grid{display:grid;gap:1rem}
.g2{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.g4{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}
.tool-card{display:flex;flex-direction:column;gap:.5rem;text-decoration:none;color:var(--text);transition:transform .2s,border-color .2s,box-shadow .2s;position:relative}
.tool-card:hover{transform:translateY(-3px);border-color:var(--blue)}
.tool-card h3{margin:.3rem 0 0;font-size:1.05rem}
.tool-card p{margin:0;color:var(--muted);font-size:.93rem}
.tool-card .more{margin-top:auto;padding-top:.4rem;color:var(--blue);font-weight:650;font-size:.9rem}
.ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--soft-blue);color:var(--blue)}
.ic.green{background:var(--soft-green);color:var(--green)}
.tag{position:absolute;top:1rem;right:1rem;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:.2rem .5rem;border-radius:6px;background:var(--soft-green);color:var(--green)}
.net-card{display:flex;align-items:center;gap:.9rem;text-decoration:none;color:var(--text)}
.net-logo{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-weight:800;color:#fff;font-size:1rem;flex:none}
.net-card small{display:block;color:var(--muted)}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:2rem;padding:2.2rem 0 3rem}
@media (max-width:960px){.layout{grid-template-columns:1fr}}
.prose{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:clamp(1.1rem,3vw,2rem);box-shadow:var(--shadow)}
.prose h2:first-child{margin-top:0}
.prose table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.95rem;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--border);padding:.6rem .75rem;text-align:left;vertical-align:top}
.prose th{background:var(--soft-blue)}
aside .card{margin-bottom:1rem}
aside h3{font-size:1rem}
aside ul{list-style:none;padding:0;margin:0}
aside li{margin:0;border-top:1px solid var(--border)}
aside li:first-child{border-top:0}
aside li a{display:block;padding:.55rem 0;text-decoration:none;color:var(--text);font-size:.94rem}
aside li a:hover{color:var(--blue)}
.note{border-left:4px solid var(--blue);background:var(--soft-blue);padding:.9rem 1rem;border-radius:0 10px 10px 0;margin:1.2rem 0}
.note.green{border-color:var(--green);background:var(--soft-green)}
.note.warn{border-color:#E0A100;background:var(--warn-bg)}
.note p:last-child{margin:0}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding:.1rem 0 .7rem 2.6rem;margin:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:1.9rem;height:1.9rem;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;display:grid;place-items:center;font-size:.9rem}
.code-table td:nth-child(2){font-family:ui-monospace,Consolas,monospace;font-weight:700;color:var(--blue)}
.stat-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-top:-2.2rem;position:relative}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem 1.1rem;box-shadow:var(--shadow)}
.stat b{display:block;font-size:1.35rem;color:var(--blue)}
.stat span{font-size:.88rem;color:var(--muted)}

/* Forms & tools */
.tool-box{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:clamp(1.1rem,3vw,1.75rem);box-shadow:var(--shadow);margin-bottom:1.5rem}
label{display:block;font-weight:650;margin-bottom:.35rem}
.hint{display:block;font-size:.85rem;color:var(--muted);margin-top:.3rem}
input[type=text],input[type=tel],input[type=search],textarea,select{width:100%;font:inherit;font-size:1.05rem;padding:.75rem .9rem;border:1.5px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);transition:border-color .2s,box-shadow .2s}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px color-mix(in srgb,var(--blue) 18%,transparent)}
textarea{min-height:140px;resize:vertical}
.field{margin-bottom:1rem}
.input-row{display:flex;gap:.6rem;flex-wrap:wrap}
.input-row input{flex:1 1 220px}
.result{margin-top:1.1rem;border-radius:12px;padding:1rem 1.1rem;border:1px solid var(--border);background:var(--bg);display:none}
.result.show{display:block;animation:fade .25s ease}
.result.ok{border-color:color-mix(in srgb,var(--green) 50%,transparent);background:var(--soft-green)}
.result.bad{border-color:color-mix(in srgb,var(--danger) 45%,transparent);background:color-mix(in srgb,var(--danger) 8%,var(--surface))}
.result h3{margin:0 0 .4rem;font-size:1.05rem}
.result dl{display:grid;grid-template-columns:max-content 1fr;gap:.35rem 1rem;margin:.5rem 0 0}
.result dt{color:var(--muted);font-size:.9rem}
.result dd{margin:0;font-weight:650;word-break:break-word}
.privacy-pill{display:inline-flex;align-items:center;gap:.4rem;font-size:.82rem;color:var(--green);font-weight:650;margin-top:.8rem}
.counter-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:.6rem;margin-top:1rem}
.counter-grid div{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:.7rem;text-align:center}
.counter-grid b{display:block;font-size:1.4rem;color:var(--blue)}
.counter-grid span{font-size:.8rem;color:var(--muted)}
.cc-list{list-style:none;padding:0;margin:1rem 0 0;max-height:420px;overflow:auto;border:1px solid var(--border);border-radius:10px}
.cc-list li{display:flex;justify-content:space-between;align-items:center;gap:.6rem;padding:.55rem .8rem;border-top:1px solid var(--border);margin:0}
.cc-list li:first-child{border-top:0}
.cc-list button{font:inherit;font-size:.82rem;padding:.25rem .6rem;border-radius:7px;border:1px solid var(--border);background:var(--surface);color:var(--blue);cursor:pointer}
.op-tabs{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}
.op-tabs button{font:inherit;font-weight:650;padding:.55rem 1rem;border-radius:999px;border:1.5px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;min-height:42px}
.op-tabs button[aria-selected="true"]{background:var(--blue);border-color:var(--blue);color:#fff}

/* FAQ */
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:12px;margin-bottom:.6rem;padding:0 1.1rem}
.faq summary{cursor:pointer;font-weight:650;padding:1rem 0;list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;line-height:1;color:var(--blue);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);margin:0 0 1rem}
.prose .faq details{box-shadow:none}

/* Blog */
.post-card{display:flex;flex-direction:column;text-decoration:none;color:var(--text);overflow:hidden;padding:0}
.post-card .thumb{height:120px;display:grid;place-items:center;color:#fff}
.post-card .body{padding:1.1rem}
.post-card small{color:var(--muted)}

/* Footer */
.site-footer{background:var(--blue-dark);color:#C9D6E5;padding:3rem 0 1.4rem;margin-top:2rem;font-size:.94rem}
[data-theme="dark"] .site-footer{background:#081320}
.site-footer h3{color:#fff;font-size:1rem}
.site-footer a{color:#C9D6E5;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer ul{list-style:none;padding:0;margin:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:2rem;padding-top:1.2rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;font-size:.85rem}
.site-footer .brand{color:#fff}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:var(--text);color:var(--surface);padding:.6rem 1rem;border-radius:10px;font-size:.9rem;opacity:0;pointer-events:none;transition:.25s;z-index:99}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}