@import url("https://fonts.googleapis.com/css2?family=Rubik:wght@400;500;600;700&family=Azeret+Mono:wght@400;500&display=swap");
:root{--bg:#0d0a10;--card:#16111a;--tile:#1e1823;--tile2:#261e2c;--ink:#f6eff7;--dim:#a99bae;--faint:#6f6275;--hair:#2a2130;--hair2:#3a2e42;--acc:#ff4fa3;--acc2:#8ea2ff;--on:#1a0410;--up:#3ddc97;--down:#ff6b6b;--r:20px}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 Rubik,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.mono,.num{font-family:"Azeret Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}
.hint{color:var(--faint);font-size:13.5px}
.chg{font-family:"Azeret Mono",monospace;font-size:.86em}.chg.up{color:var(--up)}.chg.down{color:var(--down)}

/* header */
header.top{position:sticky;top:0;z-index:20;background:rgba(13,10,16,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--hair)}
header.top .wrap{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:21px;letter-spacing:-.02em}
.brand img{width:30px;height:30px}
nav{display:flex;gap:22px;color:var(--dim);font-size:15px}nav a:hover{color:var(--ink)}
header .right{margin-left:auto;display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;font:600 15px Rubik,sans-serif;border:1px solid transparent;cursor:pointer;transition:transform .15s,background .15s;white-space:nowrap}
.btn:active{transform:scale(.98)}
.btn-acc{background:var(--acc);color:var(--on)}.btn-acc:hover{background:#ff6cb3}
.btn-ghost{background:transparent;border-color:var(--hair2);color:var(--ink)}.btn-ghost:hover{border-color:var(--dim)}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* hero */
.hero{padding:76px 0 40px;text-align:center}
.hero h1{font-size:clamp(40px,6.2vw,78px);line-height:1;letter-spacing:-.035em;font-weight:700;margin:0 auto;max-width:960px}
.hero h1 em{font-style:normal;color:var(--acc)}
.hero .sub{color:var(--dim);font-size:19px;max-width:660px;margin:22px auto 0}
.ca{display:inline-flex;align-items:center;gap:10px;margin-top:22px;padding:8px 14px;border:1px solid var(--hair2);border-radius:999px;font:13px "Azeret Mono",monospace;color:var(--dim);cursor:pointer}
.ca b{color:var(--ink);font-weight:500}

/* the pair dial */
.dial{margin:44px auto 0;max-width:880px;background:linear-gradient(180deg,var(--card),#130e17);border:1px solid var(--hair);border-radius:28px;padding:28px;text-align:left;position:relative;overflow:hidden}
.dial:before{content:"";position:absolute;inset:-40% -10% auto;height:300px;background:radial-gradient(closest-side,rgba(255,79,163,.16),transparent);pointer-events:none}
.pair{display:grid;grid-template-columns:1fr 64px 1fr;gap:14px;align-items:center;position:relative}
.side{background:var(--tile);border:1px solid var(--hair);border-radius:20px;padding:18px}
.side .lbl{font-size:12.5px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}
.side select{margin-top:8px}
.side .px{display:flex;align-items:baseline;gap:10px;margin-top:10px;font:500 22px "Azeret Mono",monospace}
.swap{width:64px;height:64px;border-radius:50%;background:var(--acc);display:grid;place-items:center;border:0;cursor:pointer;transition:transform .35s}
.swap:hover{transform:rotate(180deg)}
.swap img{width:30px;height:30px;filter:brightness(0) saturate(100%) invert(7%) sepia(40%) saturate(3000%) hue-rotate(300deg)}
.ratio{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-top:22px;flex-wrap:wrap;position:relative}
.ratio .big{font:500 clamp(46px,7vw,76px)/1 "Azeret Mono",monospace;letter-spacing:-.03em}
.ratio .cap{color:var(--dim);font-size:14px;margin-bottom:6px}
select,input{font:inherit;color:var(--ink);background:var(--tile2);border:1px solid var(--hair2);border-radius:14px;padding:11px 14px;width:100%;outline:none}
select:focus,input:focus{border-color:var(--acc)}
.tsel{display:flex;align-items:center;gap:10px}
.lg{width:30px;height:30px;border-radius:50%;object-fit:cover;flex:none;background:#fff}
.lg.badge{display:inline-grid;place-items:center;background:var(--tile2);color:var(--dim);font-size:11px;font-weight:600}

/* sections */
section{padding:84px 0 0}
.sh{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:26px;flex-wrap:wrap}
.sh h2{font-size:clamp(30px,3.6vw,44px);line-height:1.05;letter-spacing:-.03em;margin:0;font-weight:700}
.sh p{color:var(--dim);margin:0;max-width:460px}
.pairs{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.pc{background:var(--card);border:1px solid var(--hair);border-radius:var(--r);padding:18px;transition:border-color .2s,transform .2s;display:block}
.pc:hover{border-color:var(--hair2);transform:translateY(-2px)}
.pc .logos{display:flex}.pc .logos .lg{width:34px;height:34px;border:2px solid var(--card)}.pc .logos .lg+.lg{margin-left:-10px}
.pc .nm{margin-top:14px;font-weight:600}
.pc .rt{font:500 26px "Azeret Mono",monospace;margin-top:4px}
.pc .ft{display:flex;justify-content:space-between;color:var(--faint);font-size:13px;margin-top:8px}
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card{background:var(--card);border:1px solid var(--hair);border-radius:var(--r);padding:26px}
.card .n{font:500 13px "Azeret Mono",monospace;color:var(--acc)}
.card h3{font-size:21px;margin:12px 0 8px;letter-spacing:-.01em}
.card p{color:var(--dim);margin:0;font-size:15px}
.vs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.vs .card.on{border-color:rgba(255,79,163,.45);background:linear-gradient(180deg,rgba(255,79,163,.07),var(--card))}
.vs ul{margin:14px 0 0;padding:0;list-style:none;color:var(--dim);font-size:15px}.vs li{padding:9px 0;border-top:1px solid var(--hair)}
.faq{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.faq details{background:var(--card);border:1px solid var(--hair);border-radius:var(--r);padding:20px 22px}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary:after{content:"+";color:var(--acc);font-weight:500}.faq details[open] summary:after{content:"−"}
.faq p{color:var(--dim);margin:12px 0 0;font-size:15px}
.final{padding:96px 0 90px}
.final .wrap{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;flex-wrap:wrap}
.final h2{font-size:clamp(32px,4.4vw,56px);line-height:1.02;letter-spacing:-.035em;margin:0;max-width:720px}
.final .btn{margin-top:8px}

/* footer: a straight black strip */
footer{background:#000;padding:72px 0 80px;border-top:1px solid #111}
footer .wrap{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
footer .note{color:#77707a;font-size:14px;max-width:340px}
footer .cols{display:flex;gap:56px}footer .col{display:flex;flex-direction:column;gap:10px;font-size:15px;color:#bdb4c0}
footer .col b{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}footer a:hover{color:#fff}

/* app */
.appgrid{display:grid;grid-template-columns:440px 1fr;gap:18px;padding:36px 0 80px;align-items:start}
.panel{background:var(--card);border:1px solid var(--hair);border-radius:24px;padding:22px}
.panel h3{margin:0 0 14px;font-size:18px}
.fld{margin-top:14px}.fld label{display:flex;justify-content:space-between;font-size:13px;color:var(--dim);margin-bottom:7px}
.fld .in{display:flex;align-items:center;gap:8px;background:var(--tile2);border:1px solid var(--hair2);border-radius:14px;padding:4px 6px 4px 14px}
.fld .in input{border:0;background:transparent;padding:9px 0;font:500 20px "Azeret Mono",monospace}
.fld .in span{color:var(--dim);font-size:14px;padding-right:8px}
.mini{height:30px;padding:0 10px;font-size:12.5px;border-radius:999px;background:var(--tile);border:1px solid var(--hair2);color:var(--dim);cursor:pointer}
.mini:hover{color:var(--ink)}
.preview{margin-top:16px;padding:14px;border-radius:14px;background:var(--tile);color:var(--dim);font-size:14.5px;line-height:1.5}
.preview b{color:var(--ink)}
.big-btn{width:100%;height:52px;margin-top:16px;font-size:16px}
.ol{display:flex;flex-direction:column;gap:10px}
.ord{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;background:var(--tile);border:1px solid var(--hair);border-radius:16px;padding:14px}
.ord .logos{display:flex}.ord .logos .lg+.lg{margin-left:-9px}
.ord .t{font-weight:600}.ord .s{color:var(--faint);font-size:13px}
.tag{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;background:var(--tile2);color:var(--dim)}
.tag.live{background:rgba(255,79,163,.14);color:var(--acc)}.tag.done{background:rgba(61,220,151,.13);color:var(--up)}
.empty{padding:40px 10px;text-align:center;color:var(--faint)}
.banner{margin-top:28px;padding:14px 18px;border:1px solid rgba(255,79,163,.35);background:rgba(255,79,163,.07);border-radius:16px;color:var(--ink);font-size:14.5px}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;place-items:center;z-index:50}.modal.open{display:grid}
.modal .card{min-width:320px}.wbtn{display:flex;align-items:center;gap:10px;width:100%;margin-top:10px;padding:12px;border-radius:14px;background:var(--tile);border:1px solid var(--hair2);color:var(--ink);font:500 15px Rubik;cursor:pointer}.wbtn img{width:24px;height:24px}
.toast{position:fixed;left:50%;bottom:24px;opacity:0;pointer-events:none;transform:translateX(-50%) translateY(120px);background:var(--tile2);border:1px solid var(--hair2);padding:12px 18px;border-radius:14px;transition:transform .3s;z-index:60}.toast.show{transform:translateX(-50%);opacity:1}.toast.bad{border-color:var(--down)}

/* docs */
.doc{max-width:780px;padding:60px 0 90px}.doc h1{font-size:46px;letter-spacing:-.03em;margin:0 0 10px}.doc h2{margin:40px 0 10px;font-size:24px}.doc p,.doc li{color:var(--dim)}
.doc table{width:100%;border-collapse:collapse;margin-top:10px;font-size:14px}.doc td,.doc th{padding:10px 8px;border-top:1px solid var(--hair);text-align:left}.doc code{font-family:"Azeret Mono",monospace;color:var(--ink);font-size:13px}

@media(max-width:960px){.pairs{grid-template-columns:repeat(2,1fr)}.cards3,.vs,.faq{grid-template-columns:1fr}.appgrid{grid-template-columns:1fr}nav{display:none}}
@media(max-width:560px){.pair{grid-template-columns:1fr}.swap{margin:0 auto;transform:rotate(90deg)}.pairs{grid-template-columns:1fr}.hero{padding-top:48px}footer .cols{gap:32px}}