:root{--p1:#667eea;--p2:#764ba2;--ac:#059669;--tx:#1f2937;--mu:#6b7280;--bd:#d1d5db;--bg:#f8f9fc}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,"Segoe UI",Roboto,system-ui,sans-serif;color:var(--tx);background:var(--bg);line-height:1.55}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.sr,.skip:not(:focus){position:absolute;left:-9999px}
.skip:focus{position:fixed;top:8px;left:8px;background:#fff;padding:8px;z-index:99}
.hero{background:linear-gradient(135deg,var(--p1),var(--p2));color:#fff;text-align:center;padding:36px 0 70px}
.logo{font-weight:700;opacity:.9;margin-bottom:14px}
h1{margin:0 0 8px;font-size:clamp(1.9rem,5vw,3rem);line-height:1.15}
.sub{font-size:1.1rem;margin:0 0 10px;opacity:.95}.privacy{margin:0;font-size:.95rem;opacity:.9}
main{margin-top:-44px}
h2{font-size:1.6rem;margin:0 0 12px}h3{margin:22px 0 8px}
section{margin-bottom:64px}#tools{margin-bottom:24px}
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.card{font:inherit;text-align:left;background:#fff;border:2px solid transparent;border-radius:14px;padding:18px;box-shadow:0 4px 14px rgba(60,60,120,.10);cursor:pointer;display:flex;flex-direction:column;gap:2px;transition:transform .2s,box-shadow .2s,border-color .2s;background-image:linear-gradient(#fff,#f3f4ff)}
.card:hover,.card:focus-visible{transform:translateY(-4px);box-shadow:0 10px 24px rgba(102,126,234,.28);outline:none}
.card.on{border-color:var(--p1)}
.card .ic{font-size:2rem}.card b{font-size:1.02rem}.card small{color:var(--mu)}
.panel{background:#fff;border-radius:16px;box-shadow:0 4px 18px rgba(60,60,120,.10);padding:22px;margin-bottom:24px;scroll-margin-top:12px}
.tool:not([hidden]){animation:fade .3s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.lead{color:var(--mu);margin-top:0}
.row{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;margin:14px 0}
label{display:flex;flex-direction:column;gap:5px;font-size:.88rem;font-weight:600;flex:1 1 150px;min-width:0}
input,select{font:inherit;padding:12px;border:1px solid var(--bd);border-radius:8px;background:#fff;color:var(--tx);width:100%;min-width:0}
input:focus,select:focus,button:focus-visible{outline:3px solid rgba(102,126,234,.45);outline-offset:1px;border-color:var(--p1)}
.inl{display:flex;gap:8px;font-weight:400}
.inl select{width:auto}
.btn{font:inherit;font-weight:600;background:var(--ac);color:#fff;border:0;border-radius:8px;padding:12px 24px;cursor:pointer;transition:filter .15s,transform .15s}
.btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn.swap{background:var(--p1);padding:12px 16px;flex:0 0 auto}
.mini{font:inherit;font-size:.85rem;font-weight:600;background:#eef0ff;color:#3730a3;border:0;border-radius:6px;padding:8px 12px;cursor:pointer}
.mini:hover{background:#dfe3ff}
input[type=range]{padding:0;accent-color:var(--p1);height:28px}
.err{color:#b91c1c;min-height:1.2em;margin:0;font-weight:600}
.results{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin:10px 0}
.res{background:linear-gradient(135deg,#eef0ff,#f6efff);border-radius:12px;padding:14px;text-align:center}
.res span{display:block;font-size:.8rem;color:var(--mu);font-weight:600}
.res strong{font-size:1.35rem;word-break:break-word}
.big .res strong{font-size:1.7rem}
.res.huge{grid-column:1/-1}.res.huge strong{font-size:3rem}
.tw{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{padding:8px 10px;border-bottom:1px solid #e5e7eb;text-align:left}
th{background:#f3f4f6}tr.hl td{background:#eef0ff;font-weight:700}
.dot{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:8px}
.note{background:#fffbeb;border-left:4px solid #f59e0b;padding:10px 14px;border-radius:6px;font-size:.92rem;margin:14px 0}
.note:empty{display:none}
.tabs{display:flex;gap:8px;margin:10px 0}
.tab{font:inherit;font-weight:600;border:1px solid var(--bd);background:#fff;border-radius:8px;padding:9px 20px;cursor:pointer}
.tab.on{background:var(--p1);color:#fff;border-color:var(--p1)}
.chart{display:flex;align-items:flex-end;gap:10px;height:150px;margin:14px 0}
.chart div{flex:1;background:linear-gradient(var(--p1),var(--p2));border-radius:6px 6px 0 0;position:relative;min-height:4px;transition:height .4s}
.chart div small{position:absolute;top:-20px;left:0;right:0;text-align:center;font-size:.7rem;white-space:nowrap}
.chart div i{position:absolute;bottom:-20px;left:0;right:0;text-align:center;font-size:.72rem;font-style:normal;color:var(--mu)}
.chart{padding-bottom:22px}
.colwrap{display:grid;gap:18px;grid-template-columns:1fr}
.swatch{height:150px;border-radius:14px;border:1px solid var(--bd);transition:background .15s}
.colf{display:grid;gap:8px}
.trip{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:6px}
.sl.r{accent-color:#ef4444}.sl.g{accent-color:#22c55e}.sl.b{accent-color:#3b82f6}
.pal{display:flex;flex-wrap:wrap;gap:8px}
.pal button{width:38px;height:38px;border-radius:8px;border:1px solid var(--bd);cursor:pointer;transition:transform .15s}
.pal button:hover{transform:scale(1.12)}
.hist{padding-left:18px;margin:0}
.share{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;border-top:1px solid #e5e7eb;padding-top:14px}
.share .mini.wa{background:#dcfce7;color:#166534}
.ad-slot{background:#e5e7eb;color:#6b7280;border:1px dashed #9ca3af;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:600;margin:0 auto}
.ad-lead{width:100%;max-width:728px;height:90px;margin-bottom:64px}
.ad-mid{width:300px;max-width:100%;height:250px;margin:18px auto}
.steps-row{display:flex;flex-wrap:wrap;align-items:stretch;justify-content:center;gap:14px}
.step{flex:1 1 220px;background:#fff;border-radius:14px;padding:22px;text-align:center;box-shadow:0 3px 12px rgba(60,60,120,.08);position:relative}
.num{position:absolute;top:-16px;left:50%;transform:translateX(-50%);width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--p1),var(--p2));color:#fff;font-weight:700;display:grid;place-items:center}
.big-ic{font-size:2.4rem;display:block}.step h3{margin:6px 0}.step p{margin:0;color:var(--mu)}
.arrow{align-self:center;font-size:1.6rem;color:var(--p1)}
.uses{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.uses div{background:#fff;border-radius:12px;padding:16px;box-shadow:0 3px 12px rgba(60,60,120,.06)}
.uses span{font-size:1.8rem}.uses h3{margin:4px 0}.uses p{margin:0;color:var(--mu);font-size:.93rem}
.faq details{background:#fff;border-radius:10px;margin-bottom:10px;padding:14px 18px;box-shadow:0 2px 8px rgba(60,60,120,.06)}
.faq summary{cursor:pointer;font-weight:600}.faq details p{margin:8px 0 0;color:var(--mu)}
footer{background:#1f2937;color:#d1d5db;text-align:center;padding:30px 0;font-size:.92rem}
footer a{color:#c7d2fe}.privtxt{max-width:640px;margin:10px auto 0}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:grid;place-items:center;z-index:50;padding:16px}
.modal[hidden],.float[hidden]{display:none}
.mbox{background:#fff;border-radius:14px;padding:22px;text-align:center;position:relative;max-width:360px;width:100%}
.mbox .ad-slot{width:100%;max-width:320px;height:250px;margin:12px auto}
.x{position:absolute;top:6px;right:8px;border:0;background:none;font-size:1.1rem;cursor:pointer;color:var(--mu)}
.float{position:fixed;right:16px;bottom:16px;width:220px;height:130px;background:#e5e7eb;border:1px dashed #9ca3af;border-radius:10px;display:grid;place-items:center;z-index:40;color:#6b7280;font-weight:600;font-size:.8rem;animation:fade .4s}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,80px);background:#111827;color:#fff;padding:10px 18px;border-radius:8px;transition:transform .25s;z-index:60;pointer-events:none}
.toast.on{transform:translate(-50%,0)}
@media(min-width:768px){.wrap{padding:0 30px}.panel{padding:32px}.colwrap{grid-template-columns:240px 1fr}.swatch{height:100%;min-height:200px}}
@media(max-width:767px){.arrow{display:none}.float{width:160px;height:100px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}