:root{
  --bg:#f6f7fb;--surface:#fff;--text:#101828;--muted:#667085;
  --line:#e5e7eb;--primary:#5b5ce2;--primary-dark:#4647c7;
  --soft:#eef0ff;--radius:20px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}
a{text-decoration:none;color:inherit}.wrap{width:min(1100px,calc(100% - 32px));margin:auto}
.site-header{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:800;font-size:20px;letter-spacing:-.4px}.brand span{color:var(--primary);margin-right:7px}
.nav-link{font-weight:650;color:var(--muted)}
.hero{padding:90px 0 78px;background:linear-gradient(180deg,#fff 0%,#f6f7fb 100%);text-align:center}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.5px;color:var(--primary);margin-bottom:12px}
h1{font-size:clamp(42px,7vw,76px);line-height:1.02;letter-spacing:-3px;margin:0 auto 22px}
h1 span{color:var(--primary)}.hero p{max-width:650px;margin:0 auto 30px;color:var(--muted);font-size:18px}
.primary,.btn{display:inline-flex;align-items:center;justify-content:center;border:0;background:var(--primary);color:#fff;border-radius:12px;padding:13px 19px;font-weight:750;cursor:pointer}
.primary:hover,.btn:hover{background:var(--primary-dark)}
.section{padding:70px 0}.section-head{margin-bottom:25px}.section h2{font-size:32px;line-height:1.15;letter-spacing:-1px;margin:0;max-width:720px}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:25px;min-height:220px;display:flex;flex-direction:column;transition:.2s}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 15px 35px rgba(16,24,40,.08);border-color:#d5d7ff}
.tool-icon{font-size:28px;background:var(--soft);width:50px;height:50px;display:grid;place-items:center;border-radius:14px;margin-bottom:18px}
.tool-card h3{font-size:20px;margin:0 0 8px}.tool-card p{color:var(--muted);margin:0 0 18px}.arrow{margin-top:auto;color:var(--primary);font-weight:750}
.info-section{padding:0 0 70px}.info-card{background:#111827;color:#fff;border-radius:24px;padding:38px}.info-card .eyebrow{color:#aab0ff}.info-card h2{font-size:30px;margin:0 0 10px}.info-card p{color:#c7cbd4;max-width:750px}
footer{border-top:1px solid var(--line);padding:25px 0;color:var(--muted);font-size:13px}
.calculator-page{padding:55px 0 75px}.back{color:var(--primary);font-weight:700;font-size:14px}.page-title{font-size:42px;line-height:1.1;letter-spacing:-1.5px;margin:12px 0 10px}.page-intro{color:var(--muted);max-width:720px;margin-bottom:28px}
.calculator{display:grid;grid-template-columns:1fr .9fr;gap:20px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 10px 30px rgba(16,24,40,.04)}
label{display:block;font-weight:700;font-size:14px;margin:0 0 7px}input,select{width:100%;padding:12px 13px;border:1px solid #d0d5dd;border-radius:10px;background:#fff;color:var(--text);font:inherit;outline:none}
input:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(91,92,226,.12)}
.field{margin-bottom:17px}.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.result{background:linear-gradient(145deg,#5b5ce2,#4546bd);color:#fff;border-radius:20px;padding:28px;position:sticky;top:90px}.result .eyebrow{color:#dfe1ff}.result-main{font-size:34px;line-height:1.1;font-weight:850;letter-spacing:-1px;margin:4px 0 22px}.stat{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.2);padding:12px 0;color:#eef0ff}.stat strong{color:#fff}
.small-note{font-size:12px;color:var(--muted);margin-top:13px}.faq{margin-top:35px}.faq h2{font-size:25px}.faq details{background:#fff;border:1px solid var(--line);padding:16px 18px;border-radius:12px;margin:9px 0}.faq summary{font-weight:750;cursor:pointer}
@media(max-width:800px){.tool-grid{grid-template-columns:1fr 1fr}.calculator{grid-template-columns:1fr}.result{position:static}}
@media(max-width:540px){.tool-grid,.two{grid-template-columns:1fr}.hero{padding:65px 0}.section{padding:50px 0}h1{letter-spacing:-2px}.page-title{font-size:34px}}