:root{--bg:#070b16;--bg2:#0d1426;--card:#111a30;--card2:#16213d;--line:#243252;--txt:#e8eefc;--mut:#9fb0d3;--a:#38bdf8;--b:#8b5cf6;--c:#22d3ee;--ok:#34d399;--warn:#fbbf24;--r:18px;--sh:0 10px 40px rgba(0,0,0,.45)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--txt);line-height:1.75;font-size:17px;-webkit-font-smoothing:antialiased;background-image:radial-gradient(900px 500px at 85% -10%,rgba(139,92,246,.22),transparent),radial-gradient(800px 500px at -10% 0,rgba(56,189,248,.18),transparent);background-repeat:no-repeat}
a{color:var(--a);text-decoration:none}a:hover{text-decoration:underline}
img,svg,canvas{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:860px}
/* header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(7,11,22,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;color:var(--txt);letter-spacing:-.02em}
.logo:hover{text-decoration:none}
.logo i{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--a),var(--b));display:grid;place-items:center;box-shadow:0 6px 20px rgba(56,189,248,.4)}
.logo i svg{width:20px;height:20px}
.nav{display:flex;align-items:center;gap:4px}
.nav>a,.dd>button{color:var(--txt);background:none;border:0;font:inherit;font-size:.95rem;font-weight:600;padding:10px 13px;border-radius:10px;cursor:pointer}
.nav>a:hover,.dd>button:hover{background:var(--card);text-decoration:none}
.dd{position:relative}
.dd .menu{display:none;position:absolute;top:100%;left:0;min-width:270px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:var(--sh)}
.dd:hover .menu,.dd:focus-within .menu{display:block}
.menu a{display:block;padding:8px 12px;border-radius:9px;color:var(--txt);font-size:.92rem}
.menu a:hover{background:var(--card2);text-decoration:none}
.cta{background:linear-gradient(135deg,var(--a),var(--b))!important;color:#fff!important;border-radius:12px!important}
.burger{display:none;background:var(--card);border:1px solid var(--line);color:var(--txt);width:44px;height:44px;border-radius:12px;font-size:1.3rem;cursor:pointer}
@media(max-width:940px){.burger{display:block}.nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg2);flex-direction:column;align-items:stretch;padding:12px 20px 20px;border-bottom:1px solid var(--line);max-height:80vh;overflow:auto}.nav.open{display:flex}.dd .menu{display:block;position:static;box-shadow:none;border:0;background:transparent;padding:0 0 6px 10px}.dd>button{text-align:left;color:var(--mut);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}}
/* hero */
.hero{padding:54px 0 26px;text-align:center}
.hero h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.12;letter-spacing:-.03em;font-weight:800;margin-bottom:16px}
.grad{background:linear-gradient(90deg,var(--a),var(--b),var(--c));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--mut);font-size:1.12rem;max-width:760px;margin:0 auto 26px}
.crumbs{font-size:.85rem;color:var(--mut);margin-bottom:14px}.crumbs a{color:var(--mut)}
/* tool */
.tool{background:linear-gradient(160deg,var(--card),var(--card2));border:1px solid var(--line);border-radius:26px;padding:26px;box-shadow:var(--sh);max-width:820px;margin:0 auto;text-align:left}
.tool-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.tool-head h2{font-size:1.15rem}
.badge{font-size:.75rem;font-weight:700;color:var(--ok);background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.35);padding:4px 11px;border-radius:99px}
.tool canvas{width:100%;height:150px;background:#0a1124;border-radius:16px;border:1px solid var(--line);display:block}
.readout{display:flex;justify-content:space-between;margin:12px 4px 8px;font-weight:700}
.readout [data-freq]{font-size:1.6rem;color:var(--c);font-variant-numeric:tabular-nums}
.readout [data-status]{color:var(--mut);font-size:.95rem;align-self:center}
.progress{height:6px;background:#0a1124;border-radius:9px;overflow:hidden;margin-bottom:18px}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--a),var(--b))}
.controls{display:flex;flex-wrap:wrap;gap:14px;align-items:end}
.controls label{display:flex;flex-direction:column;gap:5px;font-size:.82rem;color:var(--mut);font-weight:600;flex:1;min-width:150px}
select,input[type=number],input[type=text],input[type=email],textarea{background:#0a1124;color:var(--txt);border:1px solid var(--line);border-radius:11px;padding:11px 12px;font:inherit;font-size:.95rem;width:100%}
input[type=range]{width:100%;accent-color:var(--a);height:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:700;border-radius:14px;padding:13px 22px;background:var(--card2);color:var(--txt);border:1px solid var(--line);transition:.15s}
.btn:hover{transform:translateY(-2px);text-decoration:none}
.btn.big{background:linear-gradient(135deg,var(--a),var(--b));border:0;color:#fff;font-size:1.1rem;padding:16px 34px;box-shadow:0 10px 30px rgba(99,102,241,.45);min-width:190px}
.btn.on{background:linear-gradient(135deg,#f43f5e,#f97316)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{background:#0a1124;border:1px solid var(--line);color:var(--txt);padding:8px 14px;border-radius:99px;font-size:.88rem;cursor:pointer;font-weight:600}
.chip.sel,.chip:hover{border-color:var(--a);background:rgba(56,189,248,.12)}
.lr{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.lr .btn{padding:14px 6px}.lr .btn.sel{border-color:var(--a);background:rgba(56,189,248,.18)}
.warn{margin-top:16px;font-size:.84rem;color:var(--warn);background:rgba(251,191,36,.07);border:1px solid rgba(251,191,36,.25);padding:10px 14px;border-radius:12px}
.meter{height:14px;background:#0a1124;border-radius:9px;overflow:hidden;margin-top:12px;border:1px solid var(--line)}.meter i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--ok),var(--warn),#f43f5e)}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;margin:26px 0 6px;color:var(--mut);font-size:.9rem;font-weight:600}
/* content */
main section.block{padding:30px 0}
article h2{font-size:clamp(1.45rem,3vw,2rem);line-height:1.25;letter-spacing:-.02em;margin:38px 0 14px}
article h3{font-size:1.2rem;margin:24px 0 8px}
article p{margin-bottom:16px;color:#d3def5}
article ul,article ol{margin:0 0 18px 24px;color:#d3def5}article li{margin-bottom:8px}
article strong{color:#fff}
.box{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--a);border-radius:14px;padding:16px 20px;margin:22px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin:22px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;transition:.18s;color:var(--txt);display:block}
.card:hover{transform:translateY(-4px);border-color:var(--a);text-decoration:none;box-shadow:var(--sh)}
.card b{display:block;margin-bottom:6px;font-size:1.02rem}.card span{color:var(--mut);font-size:.9rem;line-height:1.5;display:block}
.ico{font-size:1.6rem;margin-bottom:8px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:10px;padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;padding:16px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:"+";color:var(--a);font-size:1.4rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{padding-bottom:16px;margin:0}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.95rem}th,td{border:1px solid var(--line);padding:10px 12px;text-align:left}th{background:var(--card2)}
/* footer */
.ftr{margin-top:60px;background:#050810;border-top:1px solid var(--line);padding:50px 0 24px}
.fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.ftr h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.1em;color:var(--mut);margin-bottom:14px}
.ftr a{display:block;color:var(--txt);font-size:.93rem;padding:4px 0}
.ftr p{color:var(--mut);font-size:.92rem}
.fbot{border-top:1px solid var(--line);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:var(--mut);font-size:.85rem}
@media(max-width:820px){.fgrid{grid-template-columns:1fr 1fr}}@media(max-width:520px){.fgrid{grid-template-columns:1fr}body{font-size:16px}.tool{padding:18px}}
/* cookie */
#ck{position:fixed;left:16px;right:16px;bottom:16px;max-width:760px;margin:auto;background:var(--card2);border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:var(--sh);z-index:99;display:none;gap:16px;align-items:center;flex-wrap:wrap}
#ck p{flex:1;min-width:240px;font-size:.9rem;color:var(--txt)}#ck .btn{padding:10px 18px;font-size:.9rem}
.form{display:grid;gap:14px;margin:20px 0}.form label{font-weight:600;font-size:.9rem;display:grid;gap:6px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;color:#000;padding:8px;z-index:100}