:root{
  --bg0:#070c16; --bg1:#0b1220;
  --stroke:rgba(255,255,255,.10); --stroke2:rgba(255,255,255,.14);
  --txt:rgba(255,255,255,.92); --muted:rgba(255,255,255,.66); --muted2:rgba(255,255,255,.54);
  --accent:#6ee7ff; --accent2:#7c6cff;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius:22px; --radius2:16px; --w:1140px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  color:var(--txt);
  background:
    radial-gradient(900px 700px at 20% -10%, rgba(110,231,255,.14), transparent 60%),
    radial-gradient(900px 700px at 90% 0%, rgba(124,108,255,.14), transparent 55%),
    linear-gradient(180deg, var(--bg1), var(--bg0));
}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--w);margin:0 auto;padding:24px 16px 80px}
.topbar{
  position:sticky; top:0; z-index:50;
  backdrop-filter:saturate(140%) blur(10px);
  background: linear-gradient(180deg, rgba(11,18,32,.85), rgba(11,18,32,.55));
  border-bottom:1px solid var(--stroke);
}
.topbar-inner{max-width:var(--w); margin:0 auto; padding:12px 16px; display:flex; align-items:center; justify-content:space-between; gap:14px}
.brand{display:flex; align-items:center; gap:10px; font-weight:900; letter-spacing:.02em}
.logo{
  width:34px; height:34px; border-radius:12px;
  background: radial-gradient(circle at 30% 20%, rgba(110,231,255,.9), rgba(110,231,255,.18) 55%, rgba(124,108,255,.22) 100%);
  box-shadow: 0 0 0 6px rgba(110,231,255,.08);
  border:1px solid rgba(255,255,255,.12);
}
.nav{display:flex; gap:10px; flex-wrap:wrap; align-items:center; justify-content:flex-end}
.nav a{color:var(--muted); font-weight:850; padding:8px 10px; border-radius:999px}
.nav a:hover{color:var(--txt); background:rgba(255,255,255,.06); text-decoration:none}
.nav a.active{color:#08121f; background: rgba(110,231,255,.92); border:1px solid rgba(110,231,255,.50); font-weight:950}
.kicker{
  display:inline-flex; gap:10px; align-items:center; padding:7px 12px; border-radius:999px;
  border:1px solid rgba(110,231,255,.25); background: rgba(110,231,255,.06);
  color: var(--muted); font-weight:900; font-size:12px; width:fit-content;
}
.kicker .dot{width:8px;height:8px;border-radius:999px;background:rgba(110,231,255,.9); box-shadow:0 0 0 5px rgba(110,231,255,.10)}
.hero{
  margin-top:18px; border:1px solid var(--stroke); border-radius: calc(var(--radius) + 8px);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  box-shadow: var(--shadow); overflow:hidden; position:relative;
}
.hero::before{
  content:""; position:absolute; inset:-1px;
  background: radial-gradient(900px 380px at 12% 0%, rgba(110,231,255,.18), transparent 60%),
            radial-gradient(900px 380px at 95% 10%, rgba(124,108,255,.18), transparent 60%);
  pointer-events:none;
}
.hero-inner{position:relative; padding:22px 20px; display:grid; grid-template-columns:1.2fr .9fr; gap:16px; align-items:stretch}
@media (max-width:980px){.hero-inner{grid-template-columns:1fr}}
h1{margin:10px 0 0; font-size:38px; line-height:1.05; letter-spacing:-.02em}
@media (max-width:520px){h1{font-size:32px}}
.lead{margin:10px 0 0; color:var(--muted); line-height:1.6; max-width:70ch}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:14px}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:12px 14px; border-radius:14px;
  border:1px solid var(--stroke2); background: rgba(255,255,255,.04);
  color:var(--txt); font-weight:900; cursor:pointer; user-select:none;
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{background: rgba(255,255,255,.06); text-decoration:none}
.btn:active{transform: translateY(1px)}
.btn.primary{color:#071019; background: rgba(110,231,255,.92); border-color: rgba(110,231,255,.55)}
.btn.primary:hover{background: rgba(110,231,255,1)}
.btn.ghost{background: rgba(124,108,255,.10); border-color: rgba(124,108,255,.35)}
.btn.ghost:hover{background: rgba(124,108,255,.14)}
.btn.disabled{opacity:.45; cursor:not-allowed; pointer-events:none; filter:saturate(.6)}
.panel{
  border:1px solid var(--stroke); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(17,26,43,.92), rgba(15,23,38,.92));
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
  padding:16px;
}
.aside h3{margin:0; font-size:14px; color:var(--muted); letter-spacing:.02em; text-transform:uppercase}
.aside ul{margin:12px 0 0; padding:0; list-style:none; display:grid; gap:10px}
.tick{display:flex; gap:10px; align-items:flex-start; color:var(--muted); line-height:1.5; font-weight:750}
.tick b{color:var(--txt); font-weight:950}
.tick .i{
  width:18px; height:18px; border-radius:6px; background: rgba(16,185,129,.18);
  border:1px solid rgba(16,185,129,.35); display:inline-flex; align-items:center; justify-content:center;
  margin-top:1px; flex:0 0 auto;
}
.section{margin-top:16px}
.section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:12px; flex-wrap:wrap}
.section-head h2{margin:0; font-size:22px}
.section-head .hint{color:var(--muted2); font-weight:800; font-size:13px}
.form{display:grid; grid-template-columns: 1fr 1fr; gap:12px; margin-top:12px}
@media(max-width:720px){.form{grid-template-columns:1fr}}
.control{
  border:1px solid var(--stroke); border-radius: var(--radius2);
  background: rgba(255,255,255,.03); padding:12px;
}
label{display:flex; justify-content:space-between; gap:10px; font-size:12px; letter-spacing:.02em; text-transform:uppercase; color:var(--muted2); font-weight:900}
label .val{color:var(--txt); font-weight:950}
input[type="range"]{width:100%; margin-top:10px}
.result{
  border-radius: var(--radius);
  border:1px solid rgba(110,231,255,.35); background: rgba(110,231,255,.07);
  padding:14px; display:grid; gap:10px;
}
.result-top{display:flex; align-items:baseline; justify-content:space-between; gap:10px; flex-wrap:wrap}
.big{font-size:34px; font-weight:950; letter-spacing:-.02em}
.muted{color:var(--muted); font-weight:850}
.kpis{display:grid; grid-template-columns: 1fr 1fr; gap:10px}
@media(max-width:720px){.kpis{grid-template-columns:1fr}}
.kpi{border:1px solid var(--stroke); background: rgba(255,255,255,.03); border-radius: 16px; padding:12px}
.kpi .t{font-size:12px; color:var(--muted2); font-weight:950; text-transform:uppercase; letter-spacing:.02em}
.kpi .v{margin-top:6px; font-size:18px; font-weight:950}
.flow{display:grid; grid-template-columns: 1fr; gap:10px; margin-top:10px}
.step{display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap;
  border:1px solid var(--stroke); background: rgba(255,255,255,.03); border-radius: 18px; padding:12px 14px}
.step .l{display:grid; gap:4px}
.step .l .t{font-weight:950}
.step .l .s{color:var(--muted); font-size:13px; line-height:1.4}
footer{
  margin-top:26px; padding-top:18px; border-top:1px solid var(--stroke);
  color:var(--muted2); font-size:13px; line-height:1.7;
}
.footer-links{display:flex; gap:12px; flex-wrap:wrap; margin-top:10px}
.footer-links a{color:var(--muted); font-weight:850}
.footer-links a:hover{color:var(--txt)}
.small{color:var(--muted2); font-size:13px; line-height:1.6}
.result-explain{
  margin:8px 0 0;
  color:var(--muted);
  font-size:14px;
  line-height:1.65;
  font-weight:750;
}
.result-explain b{color:var(--txt);}
details.acc{
  border:1px solid var(--stroke);
  border-radius:14px;
  background:rgba(255,255,255,.02);
  padding:10px 12px;
  margin:10px 0;
}
details.acc[open]{ background:rgba(255,255,255,.03); }
details.acc summary{
  list-style:none;
  cursor:pointer;
  font-weight:950;
  color:var(--txt);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
details.acc summary::-webkit-details-marker{ display:none; }
details.acc summary:after{content:"▾";opacity:.7;font-weight:950;transform:translateY(-1px);}
details.acc[open] summary:after{content:"▴";}
details.acc .acc-body{ padding-top:8px; color:var(--muted); line-height:1.65; }
details.acc .acc-body b{ color:var(--txt); }
details.acc .acc-body ul{ margin:8px 0 0; padding-left:18px; }
details.acc .acc-body li{ margin:6px 0; }