:root{
  --bg:#EEF1F4; --surface:#FFFFFF; --sunk:#F5F7F9; --ink:#122034; --muted:#5B6B80; --line:#D5DCE5;
  --btc:#F7931A; --btc-ink:#A85600; --up:#14804A; --down:#C2362F;
  --display:"Unbounded","Arial Black",system-ui,sans-serif;
  --body:"Manrope",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0F1724; --surface:#172234; --sunk:#131D2D; --ink:#E8EDF4; --muted:#8FA0B6; --line:#26344A;
    --btc-ink:#F7A544; --up:#3CC57A; --down:#F0675F;
  }
}
:root[data-theme="dark"]{
  --bg:#0F1724; --surface:#172234; --sunk:#131D2D; --ink:#E8EDF4; --muted:#8FA0B6; --line:#26344A;
  --btc-ink:#F7A544; --up:#3CC57A; --down:#F0675F;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.5;
  font-feature-settings:"tnum" 1;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--btc-ink)}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--btc);outline-offset:2px}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* header */
header.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--display);font-weight:600;font-size:18px;letter-spacing:-.01em}
.brand .mark{width:34px;height:34px;border-radius:50%;background:var(--btc);color:#fff;display:grid;place-items:center;font-size:19px;transform:rotate(-12deg)}
.brand span b{color:var(--btc-ink);font-weight:600}
.live{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}
.live strong{color:var(--ink);font-weight:700}
.dot{width:8px;height:8px;border-radius:50%;background:var(--up);box-shadow:0 0 0 0 var(--up);animation:pulse 2s infinite}
.dot.off{background:var(--down);animation:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--up) 60%,transparent)}70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}
.theme-btn{border:1px solid var(--line);background:var(--surface);border-radius:8px;width:36px;height:36px;cursor:pointer}

/* hero */
.hero{padding:28px 0 40px}
h1{font-family:var(--display);font-weight:600;font-size:clamp(32px,6vw,60px);line-height:1.02;letter-spacing:-.03em;margin:0 0 14px;max-width:14ch}
.lede{color:var(--muted);font-size:18px;max-width:52ch;margin:0 0 30px}

.converter{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:22px;position:relative}
.leg{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;background:var(--sunk);border-radius:14px;padding:16px 16px 16px 20px}
.leg label{display:block;font-size:13px;color:var(--muted);margin-bottom:2px}
.amount{width:100%;border:0;background:transparent;font-family:var(--display);font-weight:500;font-size:clamp(26px,4.4vw,40px);letter-spacing:-.02em;padding:0;min-width:0}
.amount:focus{outline:none}
.leg:focus-within{box-shadow:inset 0 0 0 2px var(--btc)}
.result{font-family:var(--display);font-weight:600;font-size:clamp(30px,5.6vw,54px);letter-spacing:-.03em;line-height:1.1;overflow-wrap:anywhere;color:var(--ink)}
.result.btcy{color:var(--btc-ink)}
.pick{display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:8px 14px 8px 8px;cursor:pointer;font-weight:700;white-space:nowrap}
.pick img,.coin-ico{width:28px;height:28px;border-radius:50%;background:var(--line);object-fit:cover}
.pick .chev{color:var(--muted);font-size:12px}
.swap-row{display:flex;justify-content:center;margin:-10px 0;position:relative;z-index:1}
.swap{width:44px;height:44px;border-radius:50%;border:4px solid var(--surface);background:var(--btc);color:#fff;font-size:20px;cursor:pointer;transition:transform .25s}
.swap:hover{transform:rotate(180deg)}
.facts{display:flex;flex-wrap:wrap;gap:8px 24px;margin:18px 4px 4px;font-size:15px;color:var(--muted)}
.facts b{color:var(--ink);font-weight:700}
.quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.quick span{font-size:14px;color:var(--muted);align-self:center;margin-right:4px}
.chip{border:1px solid var(--line);background:transparent;border-radius:999px;padding:6px 12px;font-size:14px;font-weight:600;cursor:pointer}
.chip:hover{border-color:var(--btc);color:var(--btc-ink)}

/* market */
section.market{padding:24px 0 56px}
.m-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
h2{font-family:var(--display);font-weight:600;font-size:clamp(22px,3vw,30px);letter-spacing:-.02em;margin:0}
.m-head p{margin:4px 0 0;color:var(--muted)}
.filter{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:10px 14px;width:min(100%,280px)}
.table-scroll{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:16px}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:15px}
th{text-align:right;font-weight:600;color:var(--muted);font-size:13px;padding:12px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface)}
th:nth-child(-n+2){text-align:left}
td{padding:11px 16px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
td:nth-child(-n+2){text-align:left}
tbody tr{cursor:pointer}
tbody tr:hover{background:var(--sunk)}
tbody tr:last-child td{border-bottom:0}
.rank{color:var(--muted);width:48px}
.cname{display:flex;align-items:center;gap:10px}
.cname img{width:22px;height:22px;border-radius:50%}
.cname small{color:var(--muted);font-weight:500;margin-left:2px}
.btcp{font-weight:700;color:var(--btc-ink)}
.up{color:var(--up)} .down{color:var(--down)}
.more{display:block;margin:18px auto 0;border:1px solid var(--line);background:var(--surface);padding:10px 20px;border-radius:10px;font-weight:600;cursor:pointer}
.empty{padding:32px;text-align:center;color:var(--muted)}

/* ad slots */
.ad-slot{margin:8px 0 24px;min-height:0}

/* picker dialog */
dialog{border:1px solid var(--line);border-radius:18px;padding:0;background:var(--surface);color:var(--ink);width:min(440px,92vw);max-height:78vh}
dialog::backdrop{background:rgba(10,16,28,.55)}
.p-top{display:flex;gap:8px;padding:14px;border-bottom:1px solid var(--line)}
.p-top input{flex:1;border:1px solid var(--line);background:var(--sunk);border-radius:10px;padding:10px 12px}
.p-top button{border:0;background:transparent;font-size:22px;cursor:pointer;color:var(--muted);padding:0 6px}
.p-list{list-style:none;margin:0;padding:6px;overflow-y:auto;max-height:calc(78vh - 72px)}
.p-list button{display:flex;align-items:center;gap:12px;width:100%;border:0;background:transparent;padding:9px 10px;border-radius:10px;cursor:pointer;text-align:left}
.p-list button:hover,.p-list button:focus-visible{background:var(--sunk)}
.p-list .sym{font-weight:700;min-width:52px}
.p-list .nm{color:var(--muted);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.p-list .tag{font-size:12px;color:var(--muted)}
.p-note{padding:8px 12px;font-size:13px;color:var(--muted)}

footer{border-top:1px solid var(--line);padding:26px 0 40px;color:var(--muted);font-size:14px}
footer p{margin:0 0 8px;max-width:75ch}

@media (max-width:600px){
  .converter{padding:14px;border-radius:18px}
  .leg{padding:14px}
  .live .lbl{display:none}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- links in tables ---------- */
.cname a{color:inherit;text-decoration:none}
.cname a:hover{color:var(--btc-ink);text-decoration:underline}

/* ---------- pair pages ---------- */
.crumbs{font-size:14px;color:var(--muted);margin:4px 0 18px}
.crumbs a{color:var(--muted)}
.hero.pair h1{max-width:18ch}
.content{padding:8px 0 48px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.content article{max-width:68ch}
.content h2{margin:36px 0 12px}
.content h2:first-child{margin-top:0}
.content p{margin:0 0 14px}
.note{font-size:14px;color:var(--muted);margin:-4px 0 12px}
.conv{border-collapse:collapse;width:100%;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;font-size:15px}
.conv th,.conv td{padding:10px 14px;text-align:right;border-bottom:1px solid var(--line);position:static}
.conv th:first-child,.conv td:first-child{text-align:left;font-weight:700}
.conv tr:last-child td{border-bottom:0}
.conv td.o{color:var(--btc-ink);font-weight:700}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:700}
.faq details p{margin:10px 0 0;color:var(--muted)}
aside.related{position:sticky;top:20px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px}
aside.related h2{font-size:17px;margin:0 0 10px}
aside.related ul{list-style:none;margin:0 0 14px;padding:0}
aside.related li a{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:600;font-size:15px}
aside.related li a span{color:var(--muted);font-weight:500}
aside.related li a:hover{color:var(--btc-ink)}
.links{padding:0 0 48px}
.link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin-top:14px}
.link-grid a{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:9px 12px;text-decoration:none;color:var(--ink);font-weight:600;font-size:14px}
.link-grid a:hover{border-color:var(--btc);color:var(--btc-ink)}
.about{max-width:68ch;color:var(--muted);padding-bottom:40px}
@media (max-width:860px){.content{grid-template-columns:minmax(0,1fr)}aside.related{position:static}}