:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #0e9f6e;
  --accent-ink: #ffffff;
  --accent-soft: #e6f6f0;
  --warn: #b45309;
  --top: #0b1220;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .04);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --panel: #131c2e;
    --ink: #e8edf5;
    --muted: #93a1b8;
    --line: #24304a;
    --accent: #34d399;
    --accent-ink: #062a1d;
    --accent-soft: #11332a;
    --warn: #fbbf24;
    --top: #070c16;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom);
}
a { color: inherit; }
h1, h2 { line-height: 1.2; margin: 0; text-wrap: balance; }
h2 { font-size: 1.15rem; margin-bottom: .35rem; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.r { text-align: right; }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }

/* header */
.top { background: var(--top); color: #fff; position: sticky; top: 0; z-index: 10; padding-top: env(safe-area-inset-top); }
.top-row { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 500; letter-spacing: -.01em; }
.brand b { color: #34d399; font-weight: 700; }
.live { display: flex; align-items: center; gap: 6px; font-size: .8rem; color: #a8b3c7; }
.live i { width: 8px; height: 8px; border-radius: 50%; background: #64748b; }
.live.on i { background: #34d399; box-shadow: 0 0 0 0 rgba(52, 211, 153, .6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 7px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }

/* hero */
.hero { padding: 28px 0 18px; }
.hero h1 { font-size: clamp(1.6rem, 5vw, 2.3rem); letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p { margin: 10px 0 0; color: var(--muted); max-width: 60ch; }

/* panels */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; margin: 0 0 18px; }

/* controls */
.controls { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
.field { min-width: 0; }
@media (min-width: 720px) { .controls { grid-template-columns: 1.2fr 1fr 1.2fr; align-items: start; } }
.field label, .field .label { display: block; font-size: .8rem; font-weight: 600; color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .04em; }
.coin-select, .amount { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 10px; padding: 0 12px; height: 48px; background: var(--bg); }
.coin-select:focus-within, .amount:focus-within { border-color: var(--accent); outline: 2px solid var(--accent-soft); }
.coin-select img { border-radius: 50%; flex: none; }
.coin-select select, .amount input { flex: 1; min-width: 0; height: 100%; border: 0; background: transparent; color: inherit; font: inherit; font-size: 1.05rem; font-weight: 600; outline: none; }
.amount input { font-variant-numeric: tabular-nums; }
.unit { color: var(--muted); font-weight: 600; }
.seg { display: grid; grid-template-columns: 1fr 1fr; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 3px; height: 48px; }
.seg button { border: 0; border-radius: 8px; background: transparent; color: var(--muted); font: inherit; font-weight: 600; font-size: .92rem; cursor: pointer; }
.seg button[aria-selected="true"] { background: var(--panel); color: var(--ink); box-shadow: 0 1px 3px rgba(0, 0, 0, .12); }
.chips { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.chip { border: 1px solid var(--line); background: transparent; color: var(--muted); border-radius: 999px; padding: 4px 11px; font: inherit; font-size: .82rem; cursor: pointer; min-height: 32px; }
.chip.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* results */
.summary { margin: 4px 2px 12px; font-size: 1.02rem; min-height: 1.5em; }
.results { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 10px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px 16px; }
.card.best { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow); }
.card.empty { color: var(--muted); text-align: center; padding: 28px 16px; }
.card.skeleton { height: 128px; background: linear-gradient(100deg, var(--panel) 40%, var(--bg) 50%, var(--panel) 60%) 0 0 / 200% 100%; animation: shimmer 1.4s infinite linear; }
@keyframes shimmer { to { background-position: -200% 0; } }
.card-head { display: flex; align-items: center; gap: 10px; }
.rank { width: 26px; height: 26px; flex: none; display: grid; place-items: center; border-radius: 50%; background: var(--bg); color: var(--muted); font-size: .82rem; font-weight: 700; }
.best .rank { background: var(--accent); color: var(--accent-ink); }
.who { flex: 1; min-width: 0; display: flex; flex-wrap: wrap; align-items: baseline; column-gap: 8px; }
.name { font-weight: 700; }
.product { font-size: .82rem; }
.badge { background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: .78rem; padding: 3px 9px; border-radius: 999px; }
.diff { color: var(--warn); font-weight: 600; font-size: .88rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.card-main { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 10px 0 12px; flex-wrap: wrap; }
.big { font-size: 1.45rem; font-weight: 750; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.btn { background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 700; font-size: .92rem; padding: 0 16px; height: 42px; display: inline-flex; align-items: center; border-radius: 10px; white-space: nowrap; }
.card:not(.best) .btn { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn:hover { filter: brightness(1.06); }
.break { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 16px; margin: 0; padding-top: 10px; border-top: 1px dashed var(--line); }
@media (min-width: 560px) { .break { grid-template-columns: repeat(4, 1fr); } }
.break dt { font-size: .74rem; color: var(--muted); }
.break dd { margin: 0; font-weight: 600; font-size: .92rem; font-variant-numeric: tabular-nums; }
#missing { margin: 4px 2px 20px; }

/* tables */
.table-scroll { overflow-x: auto; margin: 10px -18px 0; padding: 0 18px; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th { text-align: left; font-size: .74rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; padding: 8px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th.r { text-align: right; }
td { padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
th:first-child, td:first-child { padding-left: 0; }
th:last-child, td:last-child { padding-right: 0; }
.overview tbody tr[data-coin] { cursor: pointer; }
.overview tbody tr[data-coin]:hover, .overview tbody tr:focus-visible { background: var(--bg); outline: none; }
.overview tr.na td { color: var(--muted); }
.coin-cell { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.coin-cell img { border-radius: 50%; flex: none; }
.tag { display: inline-block; margin-left: 6px; font-size: .68rem; font-weight: 600; color: var(--warn); border: 1px solid currentColor; border-radius: 999px; padding: 0 6px; vertical-align: middle; }
@media (max-width: 560px) { .hide-s { display: none; } }

/* text blocks */
.plain { margin: 8px 0 4px; padding-left: 18px; }
.plain li { margin: 6px 0; }
.faq details { border-top: 1px solid var(--line); padding: 10px 0; }
.faq details:first-of-type { border-top: 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 0; color: var(--muted); }
.foot { font-size: .82rem; color: var(--muted); padding-top: 8px; padding-bottom: 36px; }
.foot b { color: var(--ink); }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; scroll-behavior: auto !important; } }