/* Best Bitcoin Card - "Financial Terminal" design
   warm paper + slate ink + bitcoin orange accents. Distinct from sibling
   comparison sites: dense, functional, consumer-advocate tone. */

:root {
  --bg: #faf7f2;
  --bg-alt: #f3efe7;
  --ink: #1c1a17;
  --ink-soft: #4a463f;
  --dim: #6e675c;
  --line: #e2dccf;
  --accent: #f7931a;
  --accent-ink: #9a5c0b;
  --good: #1a7f4e;
  --ok: #2c8a5c;
  --mid: #b07d10;
  --bad: #b03a2e;
  --card: #ffffff;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17150f;
    --bg-alt: #1e1b14;
    --ink: #ece6da;
    --ink-soft: #c9c2b4;
    --dim: #8f887a;
    --line: #35301f;
    --accent: #f7931a;
    --accent-ink: #f5a623;
    --card: #211d14;
  }
}

* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); line-height: 1.55;
}
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.mono { font-family: var(--mono); font-size: 0.92em; }
.dim { color: var(--dim); }
.small { font-size: 0.88rem; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: #fff; padding: 8px 14px; z-index: 99; }
.skip:focus { left: 8px; top: 8px; }

/* header */
.site-head { border-bottom: 1px solid var(--line); background: var(--card); }
.head-in { display: flex; align-items: center; gap: 24px; min-height: 60px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.05rem; color: var(--ink); }
.brand .icon { color: var(--accent); width: 22px; height: 22px; }
.main-nav { display: flex; align-items: center; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.main-nav a { color: var(--ink-soft); font-size: 0.94rem; }
.main-nav a[aria-current="page"] { color: var(--accent-ink); font-weight: 600; }
.nav-cta { background: var(--accent); color: #fff !important; padding: 7px 14px; border-radius: 6px; font-weight: 600; }
.nav-cta:hover { text-decoration: none; filter: brightness(1.06); }

.lang-switch { font-family: var(--mono); font-size: 0.78rem; color: var(--dim); display: inline-flex; gap: 6px; }
.lang-switch a { color: var(--dim); }
.lang-switch strong { color: var(--accent-ink); }

/* hero */
.hero { padding: 56px 0 44px; background: linear-gradient(180deg, var(--bg-alt), var(--bg)); border-bottom: 1px solid var(--line); }
.hero h1 { font-size: clamp(1.7rem, 4.5vw, 2.6rem); margin: 0 0 12px; line-height: 1.15; letter-spacing: -0.01em; }
.hero-sub { max-width: 46rem; color: var(--ink-soft); font-size: 1.08rem; margin: 0 0 22px; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-stats { display: flex; gap: 28px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 18px; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 1.4rem; font-family: var(--mono); color: var(--accent-ink); }
.hero-stats span { color: var(--dim); font-size: 0.85rem; }

/* sections */
.section { padding: 40px 0; }
.section.alt { background: var(--bg-alt); }
.section-head { margin-bottom: 20px; }
.section-head h1, .section-head h2 { margin: 0 0 6px; letter-spacing: -0.01em; }
.section-sub { color: var(--dim); max-width: 46rem; margin: 0; }
h2 { font-size: 1.4rem; margin: 26px 0 10px; }

/* lanes */
.lanes .lane-card {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 16px; color: inherit; text-decoration: none;
  transition: border-color .15s ease;
}
.lane-card:hover { border-color: var(--accent); text-decoration: none; }
.lane-card > span:last-child { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.lane-card strong { display: block; }
.lane-icon .icon { width: 26px; height: 26px; color: var(--accent); }
.lanes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; width: 100%; }
.lanes-grid .lane-card { flex-direction: row; align-items: flex-start; }
@media (max-width: 800px) { .lanes-grid { grid-template-columns: 1fr; } }

/* cards grid */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 900px) { .card-grid { grid-template-columns: 1fr; } }
.card-card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.cc-head { display: flex; justify-content: space-between; align-items: center; }
.cc-rank { font-family: var(--mono); color: var(--dim); font-size: 0.9rem; }
.cc-verdict { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }
.cc-ctas { display: flex; gap: 8px; margin-top: auto; flex-wrap: wrap; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: 8px; font-weight: 600; font-size: 0.94rem; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { text-decoration: none; filter: brightness(1.07); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--card); }
.btn-ghost:hover { text-decoration: none; border-color: var(--accent); }
.btn-sm { padding: 6px 12px; font-size: 0.88rem; }
.btn .icon { width: 15px; height: 15px; }
.btn-muted { background: var(--bg-alt); color: var(--dim); }
.verdict-ctas, .hero-ctas { display: flex; gap: 10px; flex-wrap: wrap; }

/* tables */
.table-wrap { overflow-x: auto; margin: 14px 0; }
table { border-collapse: collapse; width: 100%; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--bg-alt); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--dim); font-weight: 600; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-alt); }
.facts th[scope="row"] { width: 220px; color: var(--ink-soft); font-weight: 600; }
.card-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--ink); }
.card-link:hover { color: var(--accent-ink); text-decoration: none; }

/* logos */
.logo { border-radius: 6px; flex-shrink: 0; }
.logo-fallback { display: inline-flex; align-items: center; justify-content: center; background: var(--bg-alt); border: 1px solid var(--line); color: var(--accent-ink); font-weight: 700; font-family: var(--mono); }
.logo-24 { width: 24px; height: 24px; font-size: 0.65rem; }
.logo-28 { width: 28px; height: 28px; font-size: 0.7rem; }
.logo-36 { width: 36px; height: 36px; font-size: 0.8rem; }

/* badges */
.card-badges { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0; }
.badge { display: inline-block; background: var(--bg-alt); border: 1px solid var(--line); color: var(--ink-soft); border-radius: 999px; padding: 2px 10px; font-size: 0.78rem; font-weight: 500; }
.badge-status { border-color: var(--bad); color: var(--bad); }

/* score ring */
.ring { display: inline-flex; align-items: center; justify-content: center; font-family: var(--mono); font-weight: 700; border-radius: 50%; width: 44px; height: 44px; font-size: 1rem; }
.ring-lg { width: 72px; height: 72px; font-size: 1.5rem; }
.ring-sm { width: 34px; height: 34px; font-size: 0.85rem; }
.ring.good { color: var(--good); border: 2.5px solid var(--good); }
.ring.ok { color: var(--ok); border: 2.5px solid var(--ok); }
.ring.mid { color: var(--mid); border: 2.5px solid var(--mid); }
.ring.bad { color: var(--bad); border: 2.5px solid var(--bad); }

/* score breakdown */
.score-breakdown { max-width: 480px; }
.sb-row { display: grid; grid-template-columns: 110px 1fr 40px; gap: 10px; align-items: center; margin: 6px 0; }
.sb-label { font-size: 0.88rem; color: var(--ink-soft); }
.sb-bar { display: block; }
.sb-bar svg { display: block; width: 100%; height: 8px; }
.sb-bg { fill: var(--bg-alt); }
.sb-fill { fill: var(--mid); }
.sb-fill.good { fill: var(--good); } .sb-fill.ok { fill: var(--ok); }
.sb-fill.mid { fill: var(--mid); } .sb-fill.bad { fill: var(--bad); }
.sb-val { font-family: var(--mono); font-size: 0.88rem; text-align: right; }

/* btc flow */
.btc-flow { display: flex; gap: 12px; flex-wrap: wrap; margin: 14px 0; }
.btc-step { display: flex; gap: 10px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; min-width: 200px; flex: 1; }
.btc-step .icon { width: 20px; height: 20px; color: var(--accent); margin-top: 3px; }
.btc-step strong { display: block; font-size: 0.9rem; }
.btc-step span { color: var(--ink-soft); font-size: 0.86rem; }

/* card hero */
.card-hero { display: grid; grid-template-columns: 1fr 260px; gap: 24px; align-items: start; }
@media (max-width: 800px) { .card-hero { grid-template-columns: 1fr; } }
.ch-main h1 { margin: 0 0 8px; font-size: 1.9rem; letter-spacing: -0.01em; }
.ch-side { text-align: center; display: flex; flex-direction: column; gap: 10px; align-items: center; }
.redflag { display: flex; gap: 10px; background: #fdf0ee; border: 1px solid #e5c1ba; border-radius: 8px; padding: 12px; margin: 10px 0; text-align: left; }
@media (prefers-color-scheme: dark) { .redflag { background: #2b1712; border-color: #6b2f24; } }
.redflag .icon { color: var(--bad); flex-shrink: 0; }
.redflag p { margin: 2px 0 0; }

/* pros/cons */
.pros-cons, .cmp-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 800px) { .pros-cons, .cmp-cols { grid-template-columns: 1fr; } }
.pc-col h3 { margin: 0 0 8px; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.05em; }
.pc-pros h3 { color: var(--good); } .pc-cons h3 { color: var(--bad); }
.pc-list, .pc-col ul { margin: 0; padding-left: 18px; }
.pc-col li { margin: 4px 0; }

/* crumbs */
.crumbs { margin: 18px 0 4px; font-size: 0.85rem; }
.crumbs ol { list-style: none; display: flex; gap: 6px; margin: 0; padding: 0; flex-wrap: wrap; }
.crumbs li:not(:last-child)::after { content: "/"; color: var(--dim); margin-left: 6px; }

/* faq */
.faq-list details { background: var(--card); border: 1px solid var(--line); border-radius: 8px; margin: 8px 0; padding: 12px 16px; }
.faq-list summary { cursor: pointer; font-weight: 600; }
.faq-a { color: var(--ink-soft); margin-top: 8px; }

/* prose */
.prose { max-width: 46rem; }
.prose h2 { margin-top: 28px; }
.prose h3 { margin-top: 20px; }
.prose p, .prose li { color: var(--ink-soft); }
.prose code { background: var(--bg-alt); padding: 1px 5px; border-radius: 4px; font-family: var(--mono); font-size: 0.9em; }
.callout { border-left: 3px solid var(--accent); background: var(--card); padding: 10px 14px; margin: 14px 0; border-radius: 0 8px 8px 0; }
.callout.warn { border-color: var(--bad); }
.callout.tip { border-color: var(--good); }
.direct-answer { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 16px 0; }
.direct-answer p { margin: 0; }
.table-wrap table.md-table { margin: 14px 0; }

/* tool grid */
.tool-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 900px) { .tool-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .tool-grid { grid-template-columns: 1fr; } }
.tool-card { display: flex; flex-direction: column; gap: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; color: inherit; }
.tool-card:hover { border-color: var(--accent); text-decoration: none; }

/* tool forms */
.tool-form { display: flex; flex-direction: column; gap: 12px; max-width: 520px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px; margin: 14px 0; }
.tool-form fieldset { border: 1px solid var(--line); border-radius: 8px; margin: 0; padding: 10px 14px; display: flex; flex-direction: column; gap: 6px; }
.tool-form legend { font-weight: 600; font-size: 0.92rem; padding: 0 6px; }
.tool-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.92rem; color: var(--ink-soft); }
.tool-form label:has(input[type="radio"]) { flex-direction: row; align-items: center; gap: 8px; }
.tool-form input[type="number"], .tool-form input[type="text"], .tool-form select {
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); font-family: var(--mono); font-size: 0.95rem;
}
.tool-form input[type="radio"] { width: auto; }
.tool-out { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin: 14px 0; min-height: 40px; }
.tool-out:empty { display: none; }
.tool-out table { margin: 0; }
.cmp-picks { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 6px; margin: 12px 0; }
.cmp-pick { display: flex; align-items: center; gap: 8px; font-size: 0.92rem; color: var(--ink-soft); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 6px 10px; }
.cmp-pick input[type="checkbox"] { width: auto; }

/* country grid */
.country-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; margin-top: 14px; }
.country-chip { display: inline-block; padding: 7px 12px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; font-size: 0.92rem; color: var(--ink-soft); }
.country-chip.prio { border-color: var(--accent-ink); color: var(--accent-ink); font-weight: 600; }
.country-chip:hover { border-color: var(--accent); text-decoration: none; }

/* guide cards */
.guide-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; margin: 10px 0 24px; }
.guide-card { display: flex; flex-direction: column; gap: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; color: inherit; }
.guide-card:hover { border-color: var(--accent); text-decoration: none; }

/* sources */
.sources { padding-left: 20px; }
.sources li { margin: 10px 0; }
.src-meta { display: block; font-size: 0.8rem; color: var(--dim); font-family: var(--mono); }

/* changes */
.changes-list { list-style: none; padding: 0; }
.changes-list li { padding: 8px 0; border-bottom: 1px solid var(--line); }

/* footer */
.site-foot { border-top: 1px solid var(--line); background: var(--card); margin-top: 40px; padding: 32px 0 24px; }
.foot-cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
@media (max-width: 800px) { .foot-cols { grid-template-columns: 1fr 1fr; } }
.foot-cols p { margin: 4px 0; font-size: 0.92rem; }
.foot-cols a { color: var(--ink-soft); }
.foot-note { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 16px; }

/* misc */
.cat-answer { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0; padding: 12px 16px; margin: 14px 0; }
.empty-state { background: var(--card); border: 1px dashed var(--line); border-radius: 10px; padding: 24px; text-align: center; color: var(--dim); }
.byline { border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 18px; }
.col-rank { color: var(--dim); font-family: var(--mono); width: 30px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (max-width: 700px) {
  .main-nav { gap: 12px; }
  .head-in { padding: 10px 0; }
  .section { padding: 28px 0; }
  .hero { padding: 36px 0 28px; }
  .card-hero { grid-template-columns: 1fr; }
  .ch-side { align-items: flex-start; text-align: left; }
}