:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;background:#0a1221;color:#eaf0ff;line-height:1.5}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 80% 0,#20345c 0,transparent 40%),#0a1221}header,main,footer{max-width:1160px;margin:auto;padding-left:24px;padding-right:24px}header{min-height:76px;display:flex;align-items:center;gap:36px;border-bottom:1px solid #2c3b56}.brand{font-size:23px;font-weight:850;color:white;text-decoration:none}.brand span,em{color:#80adff;font-style:normal}nav{display:flex;gap:26px;margin-left:auto}nav a{color:#c1cce0;text-decoration:none}.status,.eyebrow{font-size:12px;font-weight:800;letter-spacing:.13em;color:#90b9ff}.status{border:1px solid #3a5682;border-radius:50px;padding:6px 12px}.hero{padding:95px 0 105px;max-width:840px}.hero h1{font-size:clamp(38px,5vw,72px);line-height:1.08;margin:22px 0}.hero p{color:#b4c2d9;font-size:19px;max-width:720px}.primary,.secondary,.tool{cursor:pointer;font:inherit;border-radius:10px}.primary{background:#357deb;border:1px solid #5795ff;color:white;padding:12px 18px;font-weight:750;text-decoration:none;display:inline-block;margin-top:12px}.primary:hover{background:#4d8df1}.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:46px}.chips span,.tag{background:#142746;border:1px solid #304a73;border-radius:50px;padding:7px 12px;font-size:12px;color:#bcd4ff}section{padding-bottom:90px}h2{font-size:35px;margin:8px 0 24px}h3{font-size:27px;margin:8px 0}.workspace{display:grid;grid-template-columns:310px minmax(0,1fr);gap:18px}.tool-list{display:flex;flex-direction:column;gap:9px}.tool{background:#111d31;border:1px solid #2c3b56;color:#eaf0ff;text-align:left;padding:15px}.tool.active{background:#1b3154;border-color:#679cff}.tool span{display:block;color:#a1b1ca;font-size:12px;margin-top:5px}.panel,.history-item{background:#111d31;border:1px solid #2c3b56;border-radius:16px;padding:25px}.panel-heading,.section-head,.history-item{display:flex;justify-content:space-between;align-items:center;gap:18px}.muted{color:#a7b7cf}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}.fields label{font-size:13px;color:#b5c6e0}.fields input{display:block;width:100%;padding:12px;margin-top:7px;background:#0a1425;border:1px solid #38506f;border-radius:8px;color:white;font:inherit}.fields input:focus{outline:2px solid #5e9cfb}#feedback{color:#ffc68d;margin-top:14px}#result{margin-top:20px;background:#0a192e;border:1px solid #345c91;padding:20px;border-radius:12px}#result span,#result strong{display:block}#result span{font-size:11px;color:#a7bde0;letter-spacing:.12em}#result strong{font-size:28px;margin:8px 0 15px;color:#8ab9ff}.secondary{background:#1b2a42;border:1px solid #405573;color:#e7f0ff;padding:9px 12px}.secondary:hover{background:#294263}.formula{border-top:1px solid #2b3b54;margin-top:25px;padding-top:20px}.formula p{font-size:17px}.warning{font-size:12px;color:#b7a9a0}.actions{display:flex;flex-wrap:wrap;gap:8px}.danger{color:#ffb7b7}.history{display:grid;gap:12px;margin-top:20px}.history-item p{color:#aabbd2;margin:6px 0 0}.about{display:grid;grid-template-columns:1fr 1fr;gap:40px;border-top:1px solid #2b3b54;padding-top:70px}.about p{font-size:18px;color:#b4c2d9}footer{border-top:1px solid #2b3b54;display:flex;justify-content:space-between;gap:15px;padding-top:28px;padding-bottom:28px;color:#a6b7d0;font-size:13px}@media(max-width:750px){header{gap:12px}nav{gap:12px}nav a{font-size:12px}.status{display:none}.hero{padding:65px 0}.workspace,.about{grid-template-columns:1fr}.tool-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.fields{grid-template-columns:1fr}.section-head,.history-item,footer{align-items:start;flex-direction:column}}