:root{--primary:#568cff;--primary-dark:#8eb5ff;--success:#5adbb5;--warning:#efbf6b;--danger:#ff9e9e;--bg:#07090e;--card:#0d1522;--text:#f4f6fb;--text-muted:#a1aabb;--border:#283449;--result-bg:#568cff0c;--result-border:#568cff36;--auto-bg:#14312c;--auto-border:#397464}
*{box-sizing:border-box;margin:0;padding:0}body{font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.55}button,input,select{font:inherit}a{color:var(--primary)}
.calculator-hero{background:radial-gradient(ellipse at 85% 10%,#14284b,transparent 60%),#07090e;color:#f4f6fb;padding:28px max(24px,calc((100vw - 1000px)/2)) 44px;position:relative;overflow:hidden}
.brand-row{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:34px;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase}.brand-row a{color:#c5d4eb;text-decoration:none}.brand-name{font-weight:600}.currency-tag{border:1px solid #3a4353;border-radius:30px;padding:6px 12px;font-size:.65rem;letter-spacing:.08em;color:#b9c9e3}
.calculator-hero h1{font-family:Arial,Helvetica,sans-serif;font-size:clamp(2.3rem,5vw,3.8rem);font-weight:800;letter-spacing:-.06em;line-height:1.1;max-width:780px}.calculator-hero p{font-size:.9rem;line-height:1.7;color:#b4bed0;margin-top:14px;max-width:640px}.compat-style-1{font-size:.72rem;color:#a1aabb;margin-top:10px}
.tabs-wrapper{max-width:1040px;margin:24px auto 0;padding:0 20px}.tabs{display:flex;gap:5px;background:#0e1522;padding:6px;border-radius:16px;flex-wrap:wrap}.tab-btn{flex:1;padding:12px 8px;border:0;background:transparent;border-radius:11px;cursor:pointer;font-size:.76rem;font-weight:600;color:#aebbd0;min-height:46px;white-space:nowrap;transition:background .18s,color .18s}.tab-btn:hover{background:#1a2942;color:var(--primary-dark)}.tab-btn.active{color:#ffffff;background:var(--primary);box-shadow:0 3px 8px #07090e18}.tab-btn:focus-visible,a:focus-visible,[data-handler-click]:focus-visible{outline:3px solid #8eb5ff;outline-offset:3px}
.content{max-width:1040px;margin:0 auto;padding:24px 20px 36px}.panel{display:none}.panel.active{display:block}.card{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:32px;box-shadow:0 8px 32px #00000020}.card h2{font-family:Arial,Helvetica,sans-serif;font-size:1.8rem;font-weight:500;letter-spacing:-.04em;line-height:1.25;margin-bottom:8px}.subtitle{font-size:.83rem;color:var(--text-muted);margin-bottom:24px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.full{grid-column:1/-1}.field{display:flex;flex-direction:column;gap:9px;min-width:0}.field label{font-size:.7rem;font-weight:600;color:#b5c3d8;letter-spacing:.045em;text-transform:uppercase;display:flex;flex-wrap:wrap;align-items:center;gap:5px}.auto-badge{font-size:.6rem;color:#8ee0c3;background:#174137;border-radius:4px;padding:2px 5px;text-transform:none;letter-spacing:0;display:none}.is-auto .auto-badge{display:inline}
.input-wrap{position:relative;display:flex;align-items:center}.prefix,.suffix{position:absolute;font-size:.8rem;color:var(--text-muted);pointer-events:none}.prefix{left:14px}.suffix{right:14px}.input-wrap input,select{width:100%;min-height:54px;border:1px solid #344058;border-radius:11px;background:#0d1522;padding:13px 14px;color:var(--text);font-size:1rem;font-variant-numeric:tabular-nums;transition:border-color .18s,box-shadow .18s}.input-wrap.has-prefix input{padding-left:44px}.input-wrap.has-suffix input{padding-right:30px}input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none}input{appearance:textfield}input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #568cff16}.is-auto input{background:var(--auto-bg);border-color:var(--auto-border);color:#9be4ce;font-weight:600}.is-negative input{background:#3a1d26;border-color:#af5e6b;color:var(--danger)}
.results{margin-top:26px;background:var(--result-bg);border:1px solid var(--result-border);border-radius:16px;padding:20px;display:none}.results.show{display:block}.results h3{font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--primary);margin-bottom:14px}.result-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.result-grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.result-item{background:#0d1522;border:1px solid #283951;border-radius:11px;padding:16px;min-width:0}.r-label{font-size:.73rem;color:var(--text-muted);margin-bottom:6px}.r-value{font-size:clamp(1.1rem,2vw,1.6rem);font-weight:600;letter-spacing:-.04em;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.highlight .r-value{color:var(--primary)}.success .r-value{color:var(--success)}.danger .r-value{color:var(--danger)}.warning .r-value{color:var(--warning)}
.hint{font-size:.77rem;color:#b4c3db;background:#162033;border-radius:10px;padding:13px 16px;margin-bottom:24px;line-height:1.8}.hint span{color:#8ed8c5;font-weight:600}.formula-box{font-size:.75rem;color:var(--text-muted);background:#0b121e;border:1px solid #263248;border-radius:11px;padding:16px;margin-top:20px;line-height:1.85}.formula-box strong{color:#c7d7ee}.tip{background:#302718;border:1px solid #75613a;border-radius:10px;padding:14px;font-size:.8rem;color:#eed2a0;margin-top:14px;display:none}.tip.show{display:block}.divider{border:0;border-top:1px solid var(--border);margin:20px 0}.compat-style-2{margin-top:20px}.compat-style-3,.compat-style-4,.compat-style-5{display:inline-flex;align-items:center;min-height:44px;cursor:pointer;margin:6px 3px 0 0;background:#17283f;border:1px solid #35557c;color:#bad7ff!important;border-radius:8px;padding:8px 10px;font-size:.7rem;font-weight:600}.compat-style-5{background:#302718;border-color:#75613a;color:#eed2a0!important}
.compat-style-6{text-align:center;padding:0 20px 28px;font-size:.7rem;color:var(--text-muted);line-height:1.9}.compat-style-6 a{text-decoration:none;border-bottom:1px solid #617998}.validation-error{padding:14px;color:#ffc2c2;background:#361b28;border:1px solid #a8566a;border-radius:11px;margin-bottom:16px;font-size:.8rem}[hidden]{display:none!important}input:invalid{border-color:var(--danger)}
@media(max-width:800px){.tab-btn{flex:1 1 calc(25% - 5px)}.grid.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.result-grid.cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:500px){.calculator-hero{padding:20px 20px 30px}.brand-row{margin-bottom:28px;font-size:.65rem}.currency-tag{font-size:.6rem;padding:5px 9px}.calculator-hero h1{font-size:2.5rem}.calculator-hero p{font-size:.8rem}.compat-style-1{font-size:.67rem}.tabs-wrapper{padding:0 14px;margin-top:18px}.tabs{gap:3px;padding:5px;border-radius:13px}.tab-btn{font-size:.65rem;padding:9px 3px;min-height:44px}.content{padding:18px 14px 24px}.card{padding:22px 18px;border-radius:17px}.card h2{font-size:1.45rem}.grid,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr;gap:17px}.result-grid,.result-grid.cols-3{grid-template-columns:1fr 1fr;gap:9px}.results{padding:14px}.result-item{padding:12px}.r-value{font-size:1.15rem}.r-label{font-size:.67rem}.formula-box{padding:13px;font-size:.7rem}.hint{padding:11px;font-size:.72rem}.compat-style-6{padding-bottom:max(24px,env(safe-area-inset-bottom))}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

body{background:radial-gradient(ellipse at 85% 20%,#10234a66,transparent 55%),#07090e;color-scheme:dark}
a{text-decoration:none}.calculator-hero{max-width:1040px;margin:auto;padding:56px 20px 32px;background:none;overflow:visible}.calculator-hero h1{font-size:clamp(42px,5.5vw,70px);line-height:1.02}.calculator-hero h1 span{color:#91b5ff;background:linear-gradient(125deg,#c4d9ff,#568cff);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}.calculator-hero p{margin-top:18px}.calculator-hero .compat-style-1{margin-top:10px}.brand-row{margin-bottom:22px;font-size:10px;letter-spacing:.18em}.brand-name{color:#bfcde2!important}.currency-tag{font-size:9px}.card{background:linear-gradient(140deg,#15243bcc,#0b121ee6 75%);border-color:#ffffff17;border-radius:16px;box-shadow:0 16px 50px #00000018}.tabs{border:1px solid #ffffff17;border-radius:14px}.tab-btn.active{background:#356be2;color:white;box-shadow:0 0 24px #2469ff20}.tab-btn:focus-visible{outline-color:#8eb5ff}.input-wrap input,select{background:#ffffff06}.input-wrap input:focus,select:focus{box-shadow:0 0 0 3px #568cff20}.is-auto input{background:#4df0ce09}.results{background:#568cff09}.result-item{background:#0c1625}.hint{background:#568cff0b}.compat-style-6{padding-top:12px}.compat-style-6 a{color:#abc9ff}.site-header{padding:18px 24px 0}.nav-wrap{max-width:1340px;margin:auto;min-height:74px;padding:16px 24px;border:1px solid #ffffff18;border-radius:16px;background:linear-gradient(115deg,#111723dd,#080d16df);backdrop-filter:blur(20px);display:flex;align-items:center;justify-content:space-between;gap:24px}.wordmark{color:#f4f6fb;font-size:28px;font-weight:800;letter-spacing:.04em;line-height:1}.wordmark span{color:#568cff}nav{display:flex;align-items:center;gap:28px}nav a{font-size:12px;color:#b5bdcd;min-height:44px;display:inline-flex;align-items:center}nav a:hover{color:white}.nav-contact{border:1px solid #3a4353;border-radius:4px;padding:10px 19px;gap:24px;color:white}.skip{position:fixed;top:8px;left:8px;z-index:100;background:white;color:#07090e;padding:12px;transform:translateY(-150%)}.skip:focus{transform:none}:focus-visible{outline:3px solid #8eb5ff;outline-offset:5px}.back-tools{display:inline-flex;gap:12px;align-items:center;min-height:44px;font-size:12px;margin-bottom:16px;color:#bcd3ff}
@media(max-width:640px){.site-header{padding:12px 12px 0}.nav-wrap{min-height:68px;padding:12px 16px;gap:12px;border-radius:12px}.wordmark{font-size:23px}nav{gap:16px}nav a{font-size:11px}.nav-contact{display:none}.calculator-hero{padding:38px 20px 18px}.calculator-hero h1{font-size:clamp(35px,10vw,54px)}.brand-row{font-size:8px;letter-spacing:.1em;gap:8px}.currency-tag{font-size:8px}.card h2{font-size:1.4rem}.result-grid,.result-grid.cols-3{grid-template-columns:1fr}.r-value{font-size:1.5rem}.result-item{padding:16px}.tabs-wrapper{margin-top:20px}.tab-btn{font-size:.66rem}}