:root{
  --bg:#f7f6fb;--surface:#fff;--text:#0f172a;--muted:#5f6b7e;--border:#e1e0ee;
  --primary:#6d28d9;--primary-2:#2563eb;--on-primary:#fff;--soft:#efeafd;--danger:#dc2626;--ok:#15803d;--warn:#b45309;
  --shadow:0 10px 30px rgba(30,20,70,.08);--radius:16px;
}
:root[data-theme="dark"]{
  --bg:#0d0b16;--surface:#171326;--text:#ece9f7;--muted:#a09bb8;--border:#2a2540;
  --primary:#a78bfa;--primary-2:#60a5fa;--on-primary:#150f2b;--soft:#221b3d;--danger:#f87171;--ok:#4ade80;--warn:#fbbf24;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{width:min(1040px,100% - 32px);margin-inline:auto}
a{color:var(--primary)}

.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--text);text-decoration:none;flex:none}
.logo{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:var(--on-primary);font-weight:800}
.nav{display:flex;align-items:center;gap:6px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--muted);text-decoration:none;font-weight:500;font-size:.93rem;padding:8px 12px;border-radius:8px}
.nav a:hover{color:var(--text);background:var(--soft)}
.nav a[aria-current="page"]{color:var(--primary);background:var(--soft);font-weight:600}
.icon-btn{flex:none;display:grid;place-items:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;font-size:1.05rem}

.hero{padding:56px 0 30px;text-align:center;background:radial-gradient(60% 80% at 50% 0%,color-mix(in srgb,var(--primary) 16%,transparent),transparent)}
.hero.small{padding:40px 0 20px}
.eyebrow{display:inline-block;margin:0 0 14px;padding:6px 14px;border-radius:999px;background:var(--soft);color:var(--primary);font-weight:600;font-size:.78rem;letter-spacing:.05em;text-transform:uppercase}
h1{margin:0 0 12px;font-size:clamp(1.9rem,5vw,3rem);line-height:1.12;letter-spacing:-.02em}
h2{font-size:1.5rem;margin:0 0 16px;letter-spacing:-.01em}
h3{margin:0 0 6px;font-size:1.05rem}
.lead{max-width:680px;margin:0 auto;color:var(--muted);font-size:1.08rem}
main section{margin-block:28px}

.tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.tool{display:block;padding:22px;border:1px solid var(--border);border-radius:14px;background:var(--surface);color:var(--text);text-decoration:none;transition:transform .12s,border-color .12s,box-shadow .12s}
.tool:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:var(--shadow)}
.tool .ico{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--soft);color:var(--primary);font-weight:800;font-size:1.05rem;margin-bottom:12px}
.tool p{margin:0;color:var(--muted);font-size:.95rem}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;counter-reset:s}
.step{padding:20px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--primary);color:var(--on-primary);font-weight:800;margin-bottom:10px}
.step p{margin:0;color:var(--muted);font-size:.95rem}

.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.gap-top{margin-top:16px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
label,.lbl{font-weight:600;font-size:.9rem}
.opt{font-weight:400;color:var(--muted)}
input[type=text],input[type=number],select,textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font:inherit}
textarea{resize:vertical;line-height:1.5}
textarea.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88rem;background:var(--bg)}
select{cursor:pointer}
input:focus-visible,button:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid color-mix(in srgb,var(--primary) 45%,transparent);outline-offset:2px}
.checks-row{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:14px}
.checks-row label{display:flex;align-items:center;gap:8px;font-weight:500}
.checks-row input{width:17px;height:17px;accent-color:var(--primary)}

.btn{padding:12px 20px;border:0;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:var(--on-primary);font:inherit;font-weight:700;cursor:pointer}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:var(--surface);color:var(--text);border:1px solid var(--border)}
.btn.sm{padding:7px 14px;font-size:.85rem;border-radius:8px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.note{color:var(--muted);font-size:.9rem;margin:10px 0 0}
.error{color:var(--danger);font-weight:500;margin:10px 0 0}
.out-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;flex-wrap:wrap}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin:18px 0}
.stat{padding:14px;border-radius:12px;background:var(--soft);border:1px solid var(--border)}
.stat b{display:block;font-size:1.05rem;word-break:break-word}
.stat span{color:var(--muted);font-size:.8rem}
.devices{margin:0 0 18px;padding-left:20px;color:var(--muted)}
.devices li{margin-bottom:4px}

.scorebox{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin:6px 0 14px}
.score{display:grid;place-items:center;width:84px;height:84px;border-radius:50%;border:6px solid var(--primary);font-size:1.7rem;font-weight:800;color:var(--primary)}
.score.mid{border-color:var(--warn);color:var(--warn)}
.score.low{border-color:var(--danger);color:var(--danger)}
.checks{list-style:none;margin:0;padding:0;flex:1 1 280px}
.checks li{display:flex;gap:10px;padding:6px 0;border-bottom:1px solid var(--border);font-size:.93rem}
.checks li:last-child{border-bottom:0}
.checks .mk{flex:none;width:20px;font-weight:800}
.checks .ok{color:var(--ok)}.checks .warn{color:var(--warn)}.checks .bad{color:var(--danger)}
.checks small{display:block;color:var(--muted)}
.variants{display:grid;gap:10px;margin-top:10px}
.variant{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:var(--bg);flex-wrap:wrap}
.variant .vt{flex:1 1 260px;font-weight:600;word-break:break-word}
.badge{padding:3px 10px;border-radius:999px;background:var(--soft);color:var(--primary);font-size:.78rem;font-weight:700;white-space:nowrap}
.badge.warn{color:var(--warn)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 18px}
.chip{padding:7px 14px;border:1px solid var(--border);border-radius:999px;background:var(--bg);color:var(--text);font:inherit;font-size:.85rem;cursor:pointer}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--soft)}
.group-title{display:flex;align-items:center;gap:10px;margin:18px 0 0}

.prose{max-width:760px}
.prose p,.prose li{color:var(--muted)}
.prose h2{margin-top:28px}
details{border:1px solid var(--border);border-radius:12px;background:var(--surface);margin-bottom:10px;padding:0 18px}
summary{cursor:pointer;padding:15px 0;font-weight:600}
details p{margin:0 0 15px;color:var(--muted)}
.site-footer{border-top:1px solid var(--border);margin-top:56px;padding:28px 0;color:var(--muted);text-align:center;font-size:.9rem}
.site-footer p{margin:0}
.site-footer a{color:var(--primary);text-decoration:none;font-weight:500}
.site-footer a:hover{text-decoration:underline}

@media (max-width:640px){
  .header-inner{flex-wrap:wrap;padding-block:8px}
  .nav{width:100%;order:3}
  .hero{padding:40px 0 22px}
  .card{padding:18px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}