:root{--blue:#1768e5;--navy:#0e2340;--muted:#63748a;--line:#dce6f2;--bg:#f5f8fc;--shadow:0 16px 44px rgba(27,67,120,.12)}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,"Segoe UI",sans-serif;color:var(--navy);background:var(--bg)}a{text-decoration:none;color:inherit}.wrap{width:min(1120px,calc(100% - 32px));margin:auto}header{height:70px;background:#fff;border-bottom:1px solid var(--line)}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{font-size:23px;font-weight:850;letter-spacing:1.2px}.brand b,.hero em{color:var(--blue)}nav{display:flex;gap:24px;color:#53647a;font-weight:650}.hero{text-align:center;padding:48px 0 92px;background:linear-gradient(140deg,#edf5ff,#fff 55%,#edf4ff)}.badge{display:inline-block;padding:7px 12px;border-radius:99px;background:#e7f1ff;color:var(--blue);font-size:12px;font-weight:850;letter-spacing:.7px}.hero h1{font-size:clamp(34px,5vw,52px);margin:14px 0 8px;letter-spacing:-1.5px}.hero h1 em{font-style:normal}.hero p{margin:0 auto;color:var(--muted);font-size:17px;max-width:700px}.tool-shell{margin-top:-52px;margin-bottom:46px}.tool-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}.tool-head{padding:23px 28px;border-bottom:1px solid var(--line)}.tool-head small{color:var(--blue);font-weight:800}.tool-head h2{margin:5px 0 0}.fields{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;padding:28px}.field.wide{grid-column:1/-1}.field label{display:block;font-size:13px;font-weight:800;margin-bottom:7px}.field input,.field select{width:100%;padding:12px;border:1px solid #c8d6e7;border-radius:9px;font:inherit;outline:none}.field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #e4f0ff}.actions{display:flex;gap:10px;padding:0 28px 24px}.actions button{border:0;border-radius:9px;padding:12px 18px;font:inherit;font-weight:800;cursor:pointer}.calculate{background:var(--blue);color:#fff}.reset{background:#edf3fa;color:#42566e}.result{margin:0 28px 28px;padding:20px;border:1px solid #cfe0f4;background:#f4f9ff;border-radius:12px;min-height:90px;line-height:1.65}.result.empty{display:grid;place-items:center;color:#8190a3}.note{padding:0 28px 28px;color:var(--muted);font-size:13px;line-height:1.6}.ad{height:100px;background:#fff;border:1px dashed #cbd7e6;display:grid;place-items:center;color:#95a3b5;font-size:11px;letter-spacing:1.4px;margin:35px auto}.info{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding-bottom:60px}.info article{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px}.info h3{margin:0 0 8px}.info p{margin:0;color:var(--muted);line-height:1.65}footer{background:#0c2039;color:#b8c5d5;padding:38px 0 22px}.foot{display:flex;justify-content:space-between;gap:25px}.foot .brand{color:#fff}.foot p{margin:8px 0 0}.copyright{border-top:1px solid #29415e;margin-top:25px;padding-top:17px;font-size:13px}@media(max-width:720px){nav{display:none}.fields,.info{grid-template-columns:1fr}.field.wide{grid-column:auto}.foot{flex-direction:column}.hero{padding:40px 0 82px}.fields{padding:22px}.actions{padding:0 22px 22px}.result{margin:0 22px 22px}}