:root{--bg:#f5f7fb;--surface:#fff;--text:#172033;--muted:#657084;--line:#e2e8f0;--blue:#2563eb;--blue2:#1d4ed8;--green:#15803d;--shadow:0 22px 60px rgba(15,23,42,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}button,input{font:inherit}.container{width:min(980px,calc(100% - 32px));margin:auto}header{height:70px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.head{height:100%;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:20px;font-weight:850}.mark{width:35px;height:35px;border-radius:10px;background:linear-gradient(145deg,#3b82f6,var(--blue2));color:#fff;display:grid;place-items:center}.home{color:var(--muted);text-decoration:none;font-size:14px;font-weight:650}.home:hover{color:var(--blue)}.crumb{padding:26px 0 0;color:var(--muted);font-size:13px}.crumb a{color:var(--blue);text-decoration:none}.hero{text-align:center;padding:42px 0 26px}.pill{display:inline-block;color:var(--blue2);background:#eff6ff;border:1px solid #bfdbfe;border-radius:999px;padding:7px 12px;font-size:12px;font-weight:800}.hero h1{font-size:clamp(38px,6vw,60px);letter-spacing:-3px;line-height:1.04;margin:18px 0 12px}.hero p{color:var(--muted);font-size:17px;line-height:1.6;margin:0 auto;max-width:650px}.converter{max-width:760px;margin:auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}.labels,.row{display:grid;grid-template-columns:1fr 70px 1fr;gap:16px;align-items:center}.labels{font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:850;color:#7b8492;margin-bottom:8px}.labels span:last-child{text-align:left}.equals{text-align:center;color:var(--muted);font-weight:800}.field{display:grid;grid-template-columns:1fr auto;align-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}.field input{width:100%;height:62px;border:0;outline:none;padding:0 14px;font-size:28px;font-weight:750;color:var(--text)}.unit{padding:0 14px;color:var(--muted);font-weight:800}.result{min-height:62px;padding:0 14px;display:flex;align-items:center;font-size:28px;font-weight:750;overflow-wrap:anywhere}.formula{margin-top:18px;padding:13px 14px;border-radius:10px;background:#f8fafc;color:var(--muted);font-size:14px}.trust{display:flex;justify-content:center;gap:28px;margin:17px 0 42px;color:var(--muted);font-size:12px}.trust b{color:var(--green)}.ad{min-height:90px;border:1px dashed #cbd5e1;border-radius:12px;color:#9aa3af;display:grid;place-items:center;font-size:12px;margin:34px 0}.content{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;margin:18px 0}.content h2{font-size:27px;letter-spacing:-.8px;margin:0 0 12px}.content p,.content li{color:#566274;line-height:1.75}.examples{width:100%;border-collapse:collapse;margin-top:18px}.examples th,.examples td{text-align:left;padding:12px;border-bottom:1px solid var(--line)}.examples th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.related{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.related a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:13px;text-decoration:none;color:#3d4859;font-size:13px}.related a:hover{border-color:#9eb9ee;color:var(--blue)}.faq{border-top:1px solid var(--line);padding:18px 0}.faq h3{margin:0 0 7px;font-size:16px}.faq p{margin:0}footer{margin-top:50px;background:#fff;border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:12px}.foot{display:flex;justify-content:space-between;gap:20px}.foot a{color:var(--blue);text-decoration:none}@media(max-width:700px){.labels{display:none}.row{grid-template-columns:1fr;gap:12px}.equals{font-size:20px}.hero h1{letter-spacing:-2px}.converter{padding:20px}.trust{flex-direction:column;align-items:center;gap:8px}.related{grid-template-columns:1fr}.content{padding:22px}.foot{flex-direction:column}}