:root{
  --bg:#f7f7f5;--surface:#fff;--text:#111;--muted:#666;--line:#e5e5e2;--accent:#111;
  --radius:20px;--max:1120px;
}
*{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{color:inherit;text-decoration:none}
.site-header{height:76px;max-width:var(--max);margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.brand{font-size:22px;font-weight:850;letter-spacing:.16em}
nav{display:flex;gap:26px;font-size:14px;color:#444}
nav a:hover,.footer-links a:hover{color:#000;text-decoration:underline}
.hero{max-width:var(--max);margin:0 auto;padding:95px 24px 80px;text-align:center}
.eyebrow{font-size:12px;font-weight:750;letter-spacing:.18em;color:#777}
h1{font-size:clamp(48px,8vw,88px);line-height:.98;letter-spacing:-.055em;margin:18px 0}
h1 span{color:#777}
.hero-copy{font-size:20px;color:var(--muted);margin:22px auto 0;max-width:600px}
.tools-section{max-width:var(--max);margin:auto;padding:30px 24px 100px}
.section-heading{text-align:center;margin-bottom:30px}
.section-heading h2{font-size:34px;letter-spacing:-.03em;margin:0 0 7px}
.section-heading p{margin:0;color:var(--muted)}
.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;min-height:230px;transition:.18s ease;display:flex;flex-direction:column}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 12px 35px rgba(0,0,0,.07)}
.tool-card:last-child{grid-column:1/-1}
.icon{font-size:30px;margin-bottom:20px}
.tool-card h3{font-size:21px;margin:0 0 8px;letter-spacing:-.02em}
.tool-card p{color:var(--muted);margin:0 0 20px;max-width:470px}
.tool-card span{margin-top:auto;font-weight:700;font-size:14px}
.site-footer{border-top:1px solid var(--line);max-width:var(--max);margin:auto;padding:45px 24px 60px;display:grid;grid-template-columns:1fr 1fr auto;gap:30px;color:var(--muted);font-size:14px}
.site-footer strong{color:#111;letter-spacing:.15em}
.site-footer p{margin:5px 0}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.page{max-width:900px;margin:auto;padding:70px 24px 100px}
.page h1{font-size:clamp(42px,6vw,64px);margin-bottom:20px}
.page h2{margin-top:45px}
.page p,.page li{color:#555}
.calculator-wrap{max-width:900px;margin:auto;padding:45px 24px 90px}
.back{display:inline-block;color:#666;font-size:14px;margin-bottom:25px}
.calc-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.calc-card,.result-card,.content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.calc-card h1{font-size:42px;line-height:1.02;margin:0 0 12px}
.calc-intro{color:#666;margin-bottom:25px}
.field{margin:0 0 17px}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}
.field input,.field select{width:100%;height:48px;border:1px solid #d8d8d4;border-radius:11px;padding:0 13px;font-size:16px;background:#fff}
.field input:focus,.field select:focus{outline:2px solid #111;outline-offset:1px}
.btn{width:100%;height:50px;border:0;border-radius:11px;background:#111;color:#fff;font-weight:750;font-size:16px;cursor:pointer}
.result-card{background:#111;color:#fff;min-height:260px;position:sticky;top:20px}
.result-label{font-size:13px;color:#aaa;text-transform:uppercase;letter-spacing:.1em}
.result-main{font-size:48px;line-height:1.05;font-weight:800;letter-spacing:-.04em;margin:12px 0 25px}
.result-row{display:flex;justify-content:space-between;border-top:1px solid #333;padding:12px 0;font-size:14px}
.result-row span:last-child{font-weight:700}
.content-card{margin-top:18px}
.content-card h2{margin-top:0}
.faq{border-top:1px solid var(--line);padding:18px 0}
.faq h3{font-size:16px;margin:0 0 6px}
.faq p{margin:0;color:#666}
@media(max-width:760px){
  nav{display:none}
  .hero{padding:65px 20px 55px}
  .tools-section{padding:20px 20px 70px}
  .tool-grid{grid-template-columns:1fr}
  .tool-card:last-child{grid-column:auto}
  .site-footer{grid-template-columns:1fr;padding:35px 20px}
  .calc-layout{grid-template-columns:1fr}
  .result-card{position:static}
  .calculator-wrap{padding:30px 16px 70px}
  .calc-card,.result-card,.content-card{padding:22px}
  .calc-card h1{font-size:36px}
}