:root{--ink:#122a2a;--muted:#667575;--paper:#f7f4ed;--card:#fffdf8;--teal:#0b7774;--gold:#c59a45;--line:#dfe5e1;--danger:#a63d3d;--shadow:0 14px 40px rgba(18,42,42,.08)}
*{box-sizing:border-box}html{font-family:Arial,sans-serif;background:var(--paper);color:var(--ink)}body{margin:0;min-height:100vh;display:flex;flex-direction:column}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:radial-gradient(#0b7774 0.5px,transparent .5px);background-size:18px 18px}
.site-header{height:74px;padding:0 max(22px,calc((100% - 1120px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(247,244,237,.9);backdrop-filter:blur(10px);position:relative;z-index:2}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none;color:var(--ink);font-weight:700;font-size:21px}.brand-mark{width:35px;height:35px;border-radius:10px;background:var(--teal);color:white;display:grid;place-items:center;font-family:Georgia,serif;font-size:20px}
.theme-btn,.swap{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;cursor:pointer}.theme-btn{width:40px;height:40px;font-size:18px}
.container{width:min(1120px,calc(100% - 36px));margin:0 auto;padding:70px 0}.narrow{width:min(900px,calc(100% - 36px))}
.hero{max-width:720px;margin-bottom:42px}.eyebrow,.tag{font-size:11px;letter-spacing:.16em;font-weight:700;color:var(--teal)}h1,h2{font-family:Georgia,serif}h1{font-size:clamp(42px,7vw,76px);line-height:.98;margin:12px 0 20px}h1 em{color:var(--teal);font-style:normal}.hero-copy,.page-head p{font-size:18px;line-height:1.65;color:var(--muted);max-width:650px}
.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.tool-card{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;min-height:150px;box-shadow:0 4px 20px rgba(0,0,0,.025);transition:.2s}.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bdd3d1}.tool-card.featured{grid-column:span 2;background:#edf5f2}.tool-icon{width:46px;height:46px;border-radius:13px;background:#e5efed;color:var(--teal);display:grid;place-items:center;font-size:23px;font-weight:600}.tool-card h2{font-size:24px;margin:6px 0}.tool-card p{margin:0;color:var(--muted);line-height:1.45;font-size:14px}.arrow{font-size:24px;color:var(--gold)}.info-strip{margin-top:28px;padding:20px;border-top:1px solid var(--line);display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}.info-strip strong{color:var(--ink)}
footer{margin-top:auto;border-top:1px solid var(--line);padding:24px max(22px,calc((100% - 1120px)/2));display:flex;justify-content:space-between;color:var(--muted);font-size:12px;position:relative}
.back{color:var(--teal);text-decoration:none;font-weight:600}.page-head{margin:28px 0 34px}.page-head h1{font-size:clamp(38px,6vw,58px);margin-bottom:12px}
.calculator-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}.panel{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 8px 30px rgba(0,0,0,.03)}
label{display:block;font-weight:600;font-size:13px;margin-bottom:17px}label span{display:block;color:var(--muted);font-weight:400;font-size:11px;margin:4px 0 7px}input,select{width:100%;margin-top:8px;padding:13px 14px;border:1px solid #ccd7d4;border-radius:10px;background:#fff;color:var(--ink);font:inherit;outline:none}input:focus,select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(11,119,116,.1)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}.primary,.secondary{width:100%;padding:14px;border-radius:10px;font:inherit;font-weight:700;cursor:pointer;margin-top:6px}.primary{border:0;background:var(--teal);color:white}.secondary{background:transparent;border:1px solid var(--line);color:var(--ink)}.choice-row{display:flex;gap:8px;margin:5px 0}.choice{padding:9px 13px;border:1px solid var(--line);border-radius:8px;background:transparent;cursor:pointer}.choice.active{background:#e5efed;color:var(--teal);border-color:#bcd6d2}.hint{font-size:12px;line-height:1.55;color:var(--muted)}.empty{text-align:center;padding:35px 10px;color:var(--muted)}.empty span{font-size:40px;color:var(--gold)}.empty h2{color:var(--ink)}.result-main{padding:4px 0 22px;border-bottom:1px solid var(--line)}.result-main span{display:block;color:var(--muted);font-size:12px}.result-main strong{font-family:Georgia,serif;font-size:40px;color:var(--teal)}.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:20px 0}.metric-grid div{background:#f1f5f2;padding:13px;border-radius:10px}.metric-grid small{display:block;color:var(--muted);font-size:11px}.metric-grid b{display:block;margin-top:5px}.error{color:var(--danger);background:#fff0ef;padding:15px;border-radius:10px}
.converter-box{display:grid;grid-template-columns:1.2fr 1fr auto 1fr;gap:12px;align-items:end}.swap{width:44px;height:44px;font-size:20px}.fx-result{text-align:center;padding:30px 10px;font-family:Georgia,serif;font-size:40px;color:var(--teal);min-height:110px;display:grid;place-items:center}.rate-status{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center;margin-bottom:16px}.dot{width:8px;height:8px;border-radius:50%;background:var(--teal)}details{border-top:1px solid var(--line);padding-top:16px}summary{cursor:pointer;font-weight:700}.rate-line{display:flex;align-items:center;gap:10px}.rate-line input{max-width:180px;margin-left:auto}.tabs{display:flex;gap:7px;overflow:auto;margin-bottom:24px}.tab{white-space:nowrap;padding:10px 13px;border:1px solid var(--line);background:transparent;border-radius:9px;cursor:pointer}.tab.active{background:#e5efed;color:var(--teal);border-color:#bcd6d2}
.dark{--ink:#eef5f3;--muted:#9cafac;--paper:#0e1d1d;--card:#132525;--line:#29403f}.dark .site-header{background:rgba(14,29,29,.9)}.dark input,.dark select{background:#102020;color:var(--ink);border-color:#385150}.dark .tool-card.featured,.dark .metric-grid div{background:#18302f}.dark .info-strip{border-color:var(--line)}
@media(max-width:760px){.container{padding:45px 0}.tool-grid,.calculator-layout{grid-template-columns:1fr}.tool-card.featured{grid-column:auto}.tool-card{min-height:125px;padding:18px}.converter-box{grid-template-columns:1fr 1fr}.converter-box .swap{grid-column:1/-1;justify-self:center}.two-col{grid-template-columns:1fr}.site-header{height:64px}.hero{margin-bottom:30px}footer{gap:10px;flex-direction:column}}

.signature{color:var(--teal);font-weight:700;letter-spacing:.08em;font-size:10px}