*{box-sizing:border-box}
:root{--bg:#f6f7f9;--card:#fff;--text:#111318;--muted:#6b7280;--accent:#d27921;--line:#e5e7eb}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit}
.site-header{max-width:1040px;margin:auto;padding:28px 24px}
.logo{color:var(--text);text-decoration:none;font-weight:800;letter-spacing:-.04em;font-size:20px}
main{max-width:1040px;margin:auto;padding:20px 24px 80px}
.hero{text-align:center;padding:58px 0 35px}
.eyebrow,.section-kicker{font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--accent);margin:0 0 14px}
h1{font-size:clamp(58px,10vw,112px);line-height:.9;letter-spacing:-.075em;margin:0;font-weight:800}
h1 strong{color:var(--accent)}
.lead{color:var(--muted);font-size:18px;margin:24px 0 0}
.calculator{max-width:760px;margin:42px auto 0;background:var(--card);border:1px solid var(--line);border-radius:26px;padding:28px;box-shadow:0 12px 40px rgba(17,19,24,.05);text-align:left}
.currency-row{display:grid;grid-template-columns:1.4fr 1fr 48px 1fr;gap:10px;align-items:end}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:8px}
.field input,.field select{width:100%;border:1px solid var(--line);background:#fafafa;color:var(--text);border-radius:13px;padding:15px 14px;outline:none}
.field input{font-size:22px;font-weight:800}
.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(210,121,33,.1)}
.swap{height:51px;border:1px solid var(--line);background:var(--card);border-radius:13px;font-size:22px;font-weight:800;cursor:pointer;color:var(--accent)}
.swap:hover{border-color:var(--accent)}
.result-main{text-align:center;padding:42px 12px 22px}
.result-main span{display:block;color:var(--muted);font-size:13px;margin-bottom:7px}
.result-main strong{display:block;color:var(--accent);font-size:clamp(40px,8vw,72px);letter-spacing:-.055em;line-height:1}
.result-main small{display:block;color:var(--muted);margin-top:12px}
.status{min-height:20px;text-align:center;font-size:12px;color:var(--muted)}
.popular{text-align:center;margin-top:55px}
.popular h2,.info-card h2,.info h2{font-size:clamp(27px,4vw,40px);letter-spacing:-.045em;margin:0 0 22px}
.popular-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.popular-grid button{border:1px solid var(--line);background:var(--card);border-radius:14px;padding:17px 13px;cursor:pointer;color:var(--text);text-align:left}
.popular-grid button:hover{border-color:var(--accent);transform:translateY(-2px)}
.popular-grid strong{display:block;font-size:15px}
.popular-grid span{display:block;color:var(--muted);font-size:11px;margin-top:4px}
.info-card{display:grid;grid-template-columns:1fr 1fr;gap:45px;background:var(--card);border:1px solid var(--line);border-radius:26px;padding:42px;margin-top:55px}
.info-copy p{margin:0 0 14px;color:var(--muted);line-height:1.65}
.info-copy .source{font-size:13px}
.info{max-width:720px;margin:70px auto 0;text-align:center}
.info p{color:var(--muted);line-height:1.75}
footer{max-width:1040px;margin:auto;padding:28px 24px 38px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:13px}
@media(max-width:700px){
 .site-header{padding:22px 18px}
 main{padding:5px 18px 60px}
 .hero{padding:45px 0 25px}
 h1{font-size:clamp(54px,18vw,84px)}
 .calculator{padding:20px 16px;border-radius:20px;margin-top:32px}
 .currency-row{grid-template-columns:1fr 1fr}
 .field:first-child{grid-column:1/-1}
 .swap{grid-column:1/-1;height:44px}
 .result-main strong{font-size:clamp(39px,12vw,56px)}
 .popular-grid{grid-template-columns:1fr 1fr}
 .info-card{grid-template-columns:1fr;gap:12px;padding:27px 22px;border-radius:20px}
 footer{padding:24px 18px 32px;flex-direction:column}
}