:root {
  --bg: #eef1ec;
  --surface: #f8faf7;
  --surface-2: #e2e7e0;
  --ink: #10151a;
  --ink-2: #39434b;
  --ink-3: #566269;
  --line: #c9d1cb;
  --line-strong: #10151a;
  --blue: #1d3fc4;
  --blue-deep: #16308f;
  --on-blue: #f3f6ff;
  --blue-tint: #dfe5fa;
  --link: #1d3fc4;
  --device: #1b2127;
  --device-key: #2a323a;
  --device-key-ink: #e6ebf0;
  --lcd: #c9d8bf;
  --lcd-ink: #141f10;
  --lcd-dim: #4e5c46;
  --gain: #177a3f;
  --loss: #b8382a;
  --gain-tint: #d9eedf;
  --loss-tint: #f4ddd8;
  --shadow: 4px 4px 0 var(--ink);
  --shadow-soft: 0 10px 30px rgba(16, 21, 26, .12);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Cascadia Mono", "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1412;
    --surface: #161c19;
    --surface-2: #1f2724;
    --ink: #e8ede8;
    --ink-2: #c2cac3;
    --ink-3: #93a096;
    --line: #2b3531;
    --line-strong: #e8ede8;
    --blue: #3457d9;
    --blue-deep: #1f3bb0;
    --on-blue: #f3f6ff;
    --blue-tint: #1a2448;
    --link: #9db0ff;
    --device: #0b0e11;
    --device-key: #1d242b;
    --device-key-ink: #e6ebf0;
    --lcd: #b4c6a8;
    --lcd-ink: #10190c;
    --lcd-dim: #44523c;
    --gain: #4cc27a;
    --loss: #ef7a68;
    --gain-tint: #16301f;
    --loss-tint: #3a1d18;
    --shadow: 4px 4px 0 #e8ede8;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, .5);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1412; --surface: #161c19; --surface-2: #1f2724; --ink: #e8ede8; --ink-2: #c2cac3; --ink-3: #93a096;
  --line: #2b3531; --line-strong: #e8ede8; --blue: #3457d9; --blue-deep: #1f3bb0; --on-blue: #f3f6ff; --blue-tint: #1a2448; --link: #9db0ff;
  --device: #0b0e11; --device-key: #1d242b; --device-key-ink: #e6ebf0; --lcd: #b4c6a8; --lcd-ink: #10190c; --lcd-dim: #44523c;
  --gain: #4cc27a; --loss: #ef7a68; --gain-tint: #16301f; --loss-tint: #3a1d18; --shadow: 4px 4px 0 #e8ede8; --shadow-soft: 0 10px 30px rgba(0,0,0,.5);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; }
body { overflow-x: clip; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
}
a { color: var(--link); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
img, svg { max-width: 100%; height: auto; }
h1, h2, h3 { line-height: 1.15; font-weight: 800; margin: 0 0 .5em; letter-spacing: -.01em; text-wrap: balance; }
h1 { font-size: clamp(1.9rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); margin-top: 2.4em; }
h3 { font-size: 1.1rem; margin-top: 1.6em; }
p { margin: 0 0 1em; text-wrap: pretty; }
code, .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 6px 12px; }
.skip:focus { left: 8px; z-index: 60; }

.top { background: var(--ink); color: var(--bg); position: sticky; top: 0; z-index: 30; }
.top__row { display: flex; align-items: center; gap: 24px; min-height: 60px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--bg); font-weight: 800; text-decoration: none; }
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__name { font-size: 1.2rem; letter-spacing: .02em; }
.brand__tag { font-weight: 400; color: #9aa6ad; font-size: .88rem; }
.nav { margin-left: auto; display: flex; gap: 2px; }
.nav__link { color: var(--bg); text-decoration: none; padding: 8px 12px; font-size: .95rem; border-bottom: 3px solid transparent; }
.nav__link:hover { border-bottom-color: #9aa6ad; }
.nav__link.is-on { border-bottom-color: var(--lcd); }
.nav-toggle, .nav-burger { display: none; }
@media (max-width: 820px) {
  .brand__tag { display: none; }
  .nav-burger { display: flex; flex-direction: column; gap: 5px; margin-left: auto; padding: 12px 8px; cursor: pointer; }
  .nav-burger span { display: block; width: 22px; height: 2px; background: var(--bg); }
  .nav { display: none; width: 100%; flex-direction: column; padding-bottom: 10px; }
  .nav-toggle:checked ~ .nav { display: flex; }
  .nav__link { padding: 10px 4px; border-bottom: 1px solid #2a3238; }
}

.crumbs { font-size: .88rem; color: var(--ink-3); padding: 14px 0 0; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a { color: var(--ink-3); }
main { padding: 0 0 72px; }
main > :first-child:not(.band):not(.hero) { margin-top: 28px; }

.band { background: var(--blue); color: var(--on-blue); margin: 0 calc(50% - 50vw); padding: 48px 0 40px; }
.band__in {
  width: min(1120px, 100% - 32px); margin-inline: auto;
  display: grid; grid-template-columns: 1.05fr .95fr; grid-template-rows: 1fr auto; grid-template-areas: "text device" "receipt device";
  gap: 32px 48px; align-items: start;
}
.band__text { grid-area: text; align-self: center; }
.band__receipt { grid-area: receipt; align-self: end; }
.band__device { grid-area: device; margin-bottom: -96px; }
.band__h1 { color: var(--on-blue); font-size: clamp(2.1rem, 5.6vw, 3.6rem); max-width: 12em; margin-bottom: .4em; }
.band__lead { font-size: 1.12rem; max-width: 30em; color: #d7dfff; margin-bottom: 1.4em; }
.band__lead strong { color: var(--on-blue); font-family: var(--mono); font-weight: 600; }
.band__links { display: flex; flex-wrap: wrap; gap: 8px 10px; padding: 0; margin: 0; list-style: none; }
.band__links a { color: var(--on-blue); text-decoration: none; border: 1.5px solid rgba(243, 246, 255, .55); padding: 5px 12px; font-size: .9rem; }
.band__links a:hover { background: var(--on-blue); color: var(--blue-deep); border-color: var(--on-blue); }
@media (max-width: 880px) {
  .band { padding: 32px 0 32px; }
  .band__in { grid-template-columns: 1fr; grid-template-rows: auto; grid-template-areas: "text" "device" "receipt"; gap: 24px; }
  .band__text, .band__receipt { align-self: auto; }
  .band__device { margin-bottom: 0; }
}
.after-band { margin-top: 72px; }
.after-band .section-h { margin-top: 56px; }
@media (max-width: 880px) { .after-band { margin-top: 0; } }

.device { background: var(--device); color: var(--device-key-ink); padding: 18px 18px 20px; box-shadow: var(--shadow-soft); }
.device__tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 12px; }
.device__tab { font: inherit; font-weight: 700; font-size: .92rem; padding: 10px 8px; border: 0; background: var(--device-key); color: var(--device-key-ink); cursor: pointer; }
.device__tab.is-on { background: var(--lcd); color: var(--lcd-ink); }
.device__tab:active { transform: translateY(1px); }
.device__row { display: grid; grid-template-columns: 1.2fr 1fr; gap: 8px; }
.device label { display: block; font-size: .78rem; color: #9aa6ad; margin-bottom: 4px; }
.device input, .device select {
  width: 100%; font: inherit; font-family: var(--mono); font-size: 1.15rem; padding: 10px 12px; border: 0;
  background: var(--device-key); color: var(--device-key-ink); border-bottom: 3px solid #0a0d10;
}
.device select { font-family: var(--font); font-size: 1rem; }
.device input:focus, .device select:focus { outline: 2px solid var(--lcd); outline-offset: 1px; }
.lcd { background: var(--lcd); color: var(--lcd-ink); padding: 14px 16px 12px; margin-top: 14px; box-shadow: inset 0 2px 0 rgba(0, 0, 0, .18), inset 0 -1px 0 rgba(255, 255, 255, .35); }
.lcd__big { font-family: var(--mono); font-size: clamp(2rem, 6vw, 2.9rem); font-weight: 700; line-height: 1.1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.lcd__big small { font-family: var(--font); font-size: .42em; font-weight: 600; color: var(--lcd-dim); margin-left: 6px; letter-spacing: 0; }
.lcd__lines { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 4px; font-size: .88rem; border-top: 1px dashed var(--lcd-dim); padding-top: 8px; }
.lcd__lines li { display: flex; justify-content: space-between; gap: 12px; }
.lcd__lines .num { color: var(--lcd-ink); }
.lcd__lines span:first-child { color: var(--lcd-dim); }
.lcd.is-ticking .lcd__big { animation: tick .18s steps(2) 1; }
@keyframes tick { from { opacity: .35; } to { opacity: 1; } }
.device__flag { margin-top: 12px; padding: 10px 12px; font-size: .9rem; line-height: 1.55; }
.device__flag.ok { background: var(--gain-tint); color: var(--gain); }
.device__flag.warn { background: #f6e3b4; color: #5a3d00; }
.device__next { margin: 12px 0 0; font-size: .92rem; color: #c8d1d8; }
.device__next a { color: var(--lcd); }
.device__meta { font-size: .76rem; color: #8b979f; margin: 10px 0 0; }
.device__meta .stamp { color: inherit; }
@media (prefers-reduced-motion: reduce) { .lcd.is-ticking .lcd__big { animation: none; } .device__tab:active { transform: none; } }

.stamp { display: inline-block; font-size: .8rem; color: var(--ink-3); font-family: var(--mono); }

.receipt { background: var(--surface); color: var(--ink); border-top: 2px dashed var(--ink); border-bottom: 2px dashed var(--ink); padding: 16px 20px; font-family: var(--mono); max-width: 480px; }
.receipt__h { margin: 0 0 8px; font-size: .82rem; color: var(--ink-3); letter-spacing: .04em; }
.receipt__row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.receipt__code { font-size: 1.5rem; font-weight: 700; letter-spacing: .1em; padding: 4px 0; }
.receipt__btn { font: inherit; font-family: var(--font); font-weight: 700; padding: 8px 18px; border: 2px solid var(--ink); background: var(--ink); color: var(--bg); cursor: pointer; box-shadow: var(--shadow); }
.receipt__btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.receipt__btn.is-done { background: var(--gain); border-color: var(--gain); }
.receipt__note { margin: 10px 0 0; font-family: var(--font); font-size: .95rem; color: var(--ink-2); }
.receipt__go { display: inline-block; margin-top: 4px; font-weight: 700; color: var(--link); }
.receipt__foot { margin: 10px 0 0; padding-top: 8px; border-top: 1px solid var(--line); font-family: var(--font); font-size: .8rem; color: var(--ink-3); }
.receipt__foot a { color: var(--ink-3); }

.section-h { display: flex; align-items: baseline; gap: 16px; justify-content: space-between; flex-wrap: wrap; border-top: 3px solid var(--line-strong); padding-top: 14px; margin-top: 56px; }
.section-h h2 { margin: 0; }
.section-h a { font-size: .92rem; }
.lede { color: var(--ink-2); max-width: 44em; }

.tape { display: flex; gap: 0; margin: 16px 0 8px; padding: 0; list-style: none; overflow-x: auto; scroll-snap-type: x proximity; border: 2px solid var(--line-strong); background: var(--surface); }
.tape li { flex: 1 0 150px; scroll-snap-align: start; border-right: 1px dashed var(--line-strong); }
.tape li:last-child { border-right: 0; }
.tape a { display: block; padding: 14px 14px 12px; color: var(--ink); text-decoration: none; height: 100%; }
.tape a:hover { background: var(--blue-tint); }
.tape__q { display: block; font-size: .88rem; color: var(--ink-3); }
.tape__v { display: block; font-family: var(--mono); font-weight: 700; font-size: 1.3rem; margin: 4px 0 2px; font-variant-numeric: tabular-nums; }
.tape__s { display: block; font-size: .78rem; }
.tape__s.ok { color: var(--gain); }
.tape__s.no { color: var(--loss); }

.ladder { width: 100%; border-collapse: collapse; margin: 16px 0 8px; background: var(--surface); border: 2px solid var(--line-strong); }
.ladder td { padding: 12px 16px; border-top: 1px solid var(--line); vertical-align: middle; }
.ladder tr:first-child td { border-top: 0; }
.ladder a { color: var(--ink); text-decoration: none; font-weight: 700; }
.ladder a:hover { text-decoration: underline; }
.ladder .num { font-size: 1.35rem; font-weight: 700; text-align: right; white-space: nowrap; }
.ladder .ladder__s { font-size: .82rem; color: var(--ink-3); text-align: right; white-space: nowrap; }
.ladder .ok { color: var(--gain); }
.ladder .no { color: var(--loss); }
@media (max-width: 560px) { .ladder td { padding: 10px 10px; } .ladder .num { font-size: 1.1rem; } .ladder .ladder__s { display: none; } }

.bento { display: grid; grid-template-columns: 1.3fr 1fr; grid-auto-rows: minmax(150px, auto); gap: 12px; margin: 16px 0; }
.bento a { display: flex; flex-direction: column; justify-content: flex-end; padding: 20px 22px; text-decoration: none; color: var(--ink); border: 2px solid var(--line-strong); background: var(--surface); }
.bento a:hover { box-shadow: var(--shadow); transform: translate(-2px, -2px); }
.bento__t { font-weight: 800; font-size: 1.25rem; display: block; margin-bottom: 4px; }
.bento__d { font-size: .92rem; color: var(--ink-2); display: block; max-width: 34em; }
.bento__n { font-family: var(--mono); font-size: 2.2rem; font-weight: 700; display: block; line-height: 1; margin-bottom: auto; }
.bento .is-blue { background: var(--blue); color: var(--on-blue); border-color: var(--blue); grid-row: span 2; }
.bento .is-blue .bento__d { color: #d7dfff; }
.bento .is-lcd { background: var(--lcd); color: var(--lcd-ink); border-color: var(--lcd-ink); }
.bento .is-lcd .bento__d { color: var(--lcd-dim); }
.bento .is-ink { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.bento .is-ink .bento__d { color: #b7c1c8; }
@media (max-width: 720px) { .bento { grid-template-columns: 1fr; } .bento .is-blue { grid-row: auto; } }
@media (prefers-reduced-motion: reduce) { .bento a:hover { transform: none; } }

.order { list-style: none; padding: 0; margin: 16px 0 0; counter-reset: step; border-top: 2px solid var(--line-strong); }
.order li { counter-increment: step; border-bottom: 1px solid var(--line); }
.order a { display: grid; grid-template-columns: 56px 1fr; gap: 14px; align-items: baseline; padding: 14px 4px; color: var(--ink); text-decoration: none; }
.order a:hover { background: var(--surface); }
.order a::before { content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: 1.6rem; font-weight: 700; color: var(--link); line-height: 1; }
.order__t { font-weight: 700; display: block; }
.order__d { font-size: .9rem; color: var(--ink-3); display: block; }

.grid { display: grid; gap: 0; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); margin: 12px 0 24px; border: 2px solid var(--line-strong); background: var(--line); }
.grid > * { background: var(--surface); outline: 1px solid var(--line); }
.card { display: block; padding: 16px 18px; color: var(--ink); text-decoration: none; }
.card:hover { background: var(--blue-tint); }
.card__t { font-weight: 700; display: block; margin-bottom: 2px; }
.card__d { color: var(--ink-3); font-size: .88rem; display: block; }
.card__n { font-family: var(--mono); font-variant-numeric: tabular-nums; font-weight: 700; font-size: 1.25rem; display: block; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 20px; padding: 0; list-style: none; }
.chips a { display: inline-block; padding: 6px 12px; border: 1.5px solid var(--line-strong); color: var(--ink); font-size: .9rem; text-decoration: none; background: var(--surface); }
.chips a:hover, .chips a.is-on { background: var(--ink); color: var(--bg); }

.answer { background: var(--lcd); color: var(--lcd-ink); padding: 22px 26px 18px; margin: 16px 0 28px; box-shadow: inset 0 2px 0 rgba(0, 0, 0, .18), var(--shadow); }
.answer__big { font-family: var(--mono); font-size: clamp(2rem, 6vw, 3.4rem); font-weight: 700; font-variant-numeric: tabular-nums; margin: 0 0 8px; line-height: 1.1; letter-spacing: -.02em; }
.answer__big small { font-family: var(--font); font-size: .4em; color: var(--lcd-dim); font-weight: 600; letter-spacing: 0; }
.answer p { margin: 0 0 6px; }
.answer .num { font-weight: 700; }
.answer .stamp { display: block; margin-top: 10px; color: var(--lcd-dim); }

.spark { margin: 18px 0; }
.spark svg { width: 100%; max-width: 440px; height: auto; display: block; background: var(--surface); border: 1px solid var(--line); }
.spark figcaption { display: flex; justify-content: space-between; max-width: 440px; font-size: .8rem; color: var(--ink-3); font-family: var(--mono); margin-top: 4px; }
.is-up { color: var(--gain); font-weight: 700; }
.is-down { color: var(--loss); font-weight: 700; }

.tbl { width: 100%; border-collapse: collapse; margin: 12px 0 20px; font-size: .95rem; background: var(--surface); border: 2px solid var(--line-strong); }
.tbl th, .tbl td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { background: var(--surface-2); font-weight: 700; font-size: .85rem; color: var(--ink-2); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl .num, .tbl td.num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tbl tr.is-here td { background: var(--blue-tint); font-weight: 700; }

.note { border: 2px solid var(--line-strong); padding: 12px 16px; margin: 18px 0; background: var(--surface); font-size: .95rem; }
.note--warn { background: #f6e3b4; color: #3d2a00; border-color: #3d2a00; }
.note--ok { background: var(--gain-tint); border-color: var(--gain); }
:root[data-theme="dark"] .note--warn { background: #3d2f0f; color: #f6e3b4; border-color: #f6e3b4; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .note--warn { background: #3d2f0f; color: #f6e3b4; border-color: #f6e3b4; } }

.form { background: var(--surface); border: 2px solid var(--line-strong); padding: 20px; margin: 12px 0 24px; }
.form__submit { margin: 16px 0 0; }
.form__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; align-items: end; }
.field label { display: block; font-size: .85rem; color: var(--ink-3); margin-bottom: 4px; }
.field input, .field select { width: 100%; font: inherit; font-size: 1.05rem; padding: 10px 12px; border: 1.5px solid var(--line-strong); background: var(--bg); color: var(--ink); }
.field input:focus, .field select:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
.btn { font: inherit; font-weight: 700; padding: 11px 20px; border: 2px solid var(--ink); background: var(--ink); color: var(--bg); cursor: pointer; box-shadow: var(--shadow); }
.btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
@media (prefers-reduced-motion: reduce) { .btn:active, .receipt__btn:active { transform: none; } }

.result { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0; margin: 16px 0; border: 2px solid var(--line-strong); background: var(--line); }
.result > div { background: var(--lcd); color: var(--lcd-ink); padding: 14px 16px; outline: 1px solid var(--lcd-dim); }
.result__k { font-size: .8rem; color: var(--lcd-dim); }
.result__v { font-family: var(--mono); font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.2; }
.result__v.is-up { color: #0f5a2c; }
.result__v.is-down { color: #8f2416; }

.check__q { margin: 18px 0 6px; font-weight: 700; }
.check__opts { display: flex; flex-wrap: wrap; gap: 8px; }
.check__opts label { border: 1.5px solid var(--line-strong); padding: 6px 14px; cursor: pointer; background: var(--bg); }
.check__opts label:has(input:checked) { background: var(--ink); color: var(--bg); }
.check__opts input { margin-right: 6px; }
.check__out { margin-top: 20px; }
.check__out li { margin-bottom: 6px; }

.prose { max-width: 46em; }
.prose h2 { scroll-margin-top: 80px; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin-bottom: .35em; }
.prose blockquote { margin: 1em 0; padding: 8px 16px; border-left: 2px solid var(--line-strong); color: var(--ink-2); }
.prose table { width: 100%; border-collapse: collapse; margin: 1em 0; background: var(--surface); font-size: .95rem; border: 2px solid var(--line-strong); }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.prose th { background: var(--surface-2); }
.prose hr { border: 0; border-top: 2px solid var(--line-strong); margin: 2em 0; }
.prose a[rel~="sponsored"] { color: var(--lcd-ink); background: var(--lcd); font-weight: 800; padding: 1px 6px; text-decoration: none; box-shadow: 2px 2px 0 var(--line-strong); }
.prose a[rel~="sponsored"]:hover { background: var(--blue); color: var(--on-blue); }
.prose .toc { background: var(--surface); border: 2px solid var(--line-strong); padding: 12px 18px 12px 36px; margin: 1em 0 2em; font-size: .95rem; }
.prose .toc li { margin: 2px 0; }
.meta { color: var(--ink-3); font-size: .88rem; margin-bottom: 18px; font-family: var(--mono); }

.faq { margin-top: 40px; }
.faq__item { border: 2px solid var(--line-strong); background: var(--surface); margin-bottom: -2px; padding: 0 16px; }
.faq__item summary { cursor: pointer; padding: 12px 0; font-weight: 700; list-style: none; position: relative; padding-right: 28px; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; position: absolute; right: 2px; top: 10px; color: var(--ink-3); font-family: var(--mono); font-size: 1.2rem; }
.faq__item[open] summary::after { content: "-"; }
.faq__body { padding: 0 0 14px; color: var(--ink-2); }
.faq__body p { margin: 0 0 .6em; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 10px 0; font-size: .95rem; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; font-variant-numeric: tabular-nums; }

.foot { background: var(--ink); color: #b7c1c8; padding: 36px 0 20px; font-size: .92rem; margin-top: 24px; }
.foot__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
.foot__grid a { display: block; color: var(--bg); padding: 2px 0; text-decoration: none; }
.foot__grid a:hover { text-decoration: underline; }
.foot__brand { display: flex; align-items: center; gap: 8px; font-weight: 800; color: var(--bg); }
.foot__brand .brand__mark { width: 22px; height: 22px; }
.foot__blurb { max-width: 36em; }
.foot__h { font-weight: 700; color: var(--bg); margin-bottom: 6px; }
.foot__legal { margin-top: 24px; padding-top: 16px; border-top: 1px solid #2a3238; font-size: .85rem; color: #8b979f; }
@media (max-width: 700px) { .foot__grid { grid-template-columns: 1fr 1fr; } .foot__grid > div:first-child { grid-column: 1 / -1; } }

.hidden { display: none !important; }

.prose figure.shot { margin: 1.6em 0; }
.prose figure.shot img { display: block; width: 100%; height: auto; border: 2px solid var(--line-strong); box-shadow: var(--shadow); }
.prose figure.shot figcaption { font-size: .85rem; color: var(--ink-3); margin-top: 10px; font-family: var(--mono); }

.cover { display: block; width: 100%; height: auto; border: 2px solid var(--line-strong); margin: 0 0 20px; }
.order__cover { width: 100%; height: auto; display: block; }
.coin-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0; margin: 12px 0 20px; border: 2px solid var(--line-strong); background: var(--line); }
.coin-facts > div { background: var(--surface); outline: 1px solid var(--line); padding: 10px 14px; }
.coin-facts dt { font-size: .78rem; color: var(--ink-3); }
.coin-facts dd { margin: 0; font-family: var(--mono); font-weight: 700; font-variant-numeric: tabular-nums; }
.prose .refcode { font-weight: 800; letter-spacing: .06em; padding: 1px 6px; border: 1.5px dashed var(--line-strong); background: var(--surface); user-select: all; }
.prose .cover { margin: 8px 0 20px; }
.tbl--dense { font-size: .88rem; }
.tbl--dense th, .tbl--dense td { padding: 6px 10px; white-space: nowrap; }
.tbl small { color: var(--ink-3); font-size: .78rem; }
.pager { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 24px 0; padding: 12px 0; border-top: 2px solid var(--line-strong); border-bottom: 2px solid var(--line-strong); font-size: .95rem; }
.months { margin: 0 0 18px; }
.months h3 { margin: 18px 0 8px; font-size: 1rem; }
.months__grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 0; border: 2px solid var(--line-strong); background: var(--line); }
.months__grid li { background: var(--surface); outline: 1px solid var(--line); }
.months__grid a { display: flex; flex-direction: column; padding: 8px 10px; color: var(--ink); text-decoration: none; font-variant-numeric: tabular-nums; }
.months__grid a:hover { background: var(--blue-tint); }
.months__m { font-size: .78rem; color: var(--ink-3); }
.months__v { font-family: var(--mono); font-weight: 700; font-size: .92rem; }
.months__c { font-family: var(--mono); font-size: .78rem; }
.bento .is-wide { grid-column: 1 / -1; }
.live { background: var(--lcd); color: var(--lcd-ink); padding: 10px 14px; font-size: .95rem; } .live a { color: var(--lcd-ink); }
.editor-box { margin: 32px 0 8px; padding: 14px 18px; border: 2px solid var(--line-strong); background: var(--surface); font-size: .92rem; color: var(--ink-2); }
.editor-box p { margin: 0 0 6px; }
.editor-box__h { font-weight: 800; color: var(--ink); }
.feecalc { border: 2px solid var(--line-strong); background: var(--surface); padding: 16px 18px; margin: 18px 0 24px; }
.feecalc__h { font-weight: 800; margin: 0 0 10px; }
.feecalc__in { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px 16px; align-items: end; }
.feecalc__in label { display: flex; flex-direction: column; gap: 4px; font-size: .88rem; color: var(--ink-2); }
.feecalc__in input[type="number"] { font: inherit; font-family: var(--mono); padding: 8px 10px; border: 2px solid var(--line-strong); background: var(--bg); color: var(--ink); }
.feecalc__in .feecalc__chk { flex-direction: row; align-items: center; gap: 6px; }
.feecalc__out { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin: 14px 0 10px; border: 2px solid var(--line-strong); }
.feecalc__out > div { padding: 12px 14px; background: var(--bg); }
.feecalc__out > .is-ref { background: var(--lcd); color: var(--lcd-ink); border-left: 2px solid var(--line-strong); }
.feecalc__k { margin: 0; font-size: .85rem; font-weight: 700; }
.feecalc__v { margin: 4px 0; font-family: var(--mono); font-size: 1.5rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.feecalc__d { margin: 0; font-size: .82rem; }
.feecalc__note { margin: 0; font-size: .8rem; color: var(--ink-3); }
@media (max-width: 520px) { .feecalc__out { grid-template-columns: 1fr; } .feecalc__out > .is-ref { border-left: 0; border-top: 2px solid var(--line-strong); } }
.hero { background: var(--blue); color: var(--on-blue); margin: 0 calc(50% - 50vw); padding: 44px 0 36px; }
.hero__in { width: min(640px, 100% - 32px); margin-inline: auto; }
.hero__h1 { color: var(--on-blue); font-size: clamp(1.9rem, 5vw, 2.8rem); margin: 0 0 .35em; text-align: center; }
.hero__lead { color: #d7dfff; text-align: center; margin: 0 auto 20px; max-width: 32em; }
.hero__quick { margin: 16px 0 0; text-align: center; font-size: .9rem; color: #d7dfff; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 14px; }
.hero__quick a { color: var(--on-blue); }
.hero .note--warn { margin: 0 0 14px; }
.doors { margin-top: 48px; }
.doors__h { margin: 0 0 14px; }
.doors__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.door { display: flex; flex-direction: column; gap: 8px; padding: 18px 20px; border: 2px solid var(--line-strong); background: var(--surface); color: var(--ink); text-decoration: none; }
.door:hover { box-shadow: var(--shadow); transform: translate(-2px, -2px); }
.door__q { font-size: 1.2rem; font-weight: 800; }
.door__a { color: var(--ink-2); font-size: .95rem; line-height: 1.6; flex: 1; }
.door__go { color: var(--link); font-weight: 700; font-size: .95rem; }
@media (max-width: 760px) { .doors__grid { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .door:hover { transform: none; } }
.steps-home { margin-top: 56px; scroll-margin-top: 80px; }
.steps-home__in { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 24px; align-items: start; }
@media (max-width: 860px) { .steps-home__in { grid-template-columns: 1fr; } }
.steps-list { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--line-strong); }
.steps-list li { border-bottom: 1px solid var(--line); }
.steps-list a { display: grid; grid-template-columns: 44px 1fr; gap: 12px; align-items: center; padding: 14px 4px; color: var(--ink); text-decoration: none; }
.steps-list a:hover { background: var(--surface); }
.steps-list__n { width: 36px; height: 36px; display: grid; place-items: center; background: var(--ink); color: var(--bg); font-family: var(--mono); font-weight: 700; }
.steps-list__t { display: block; font-weight: 800; font-size: 1.05rem; }
.steps-list__d { display: block; color: var(--ink-3); font-size: .9rem; }
.steps-home__note { margin: 0 0 8px; font-size: .92rem; color: var(--ink-2); }
.more-tools { margin-top: 56px; }
.more-tools__list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px 24px; }
.more-tools__list li { display: flex; flex-direction: column; padding: 8px 0; border-bottom: 1px solid var(--line); }
.more-tools__list a { font-weight: 700; }
.more-tools__list span { color: var(--ink-3); font-size: .88rem; }
.stepstrip { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin: 0 0 16px; padding: 10px 12px; background: var(--surface); border: 1.5px solid var(--line); font-size: .88rem; }
.stepstrip__h { font-weight: 700; color: var(--ink-2); }
.stepstrip ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.stepstrip li > * { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px 3px 4px; border: 1.5px solid var(--line-strong); color: var(--ink); text-decoration: none; background: var(--bg); }
.stepstrip b { display: inline-grid; place-items: center; width: 20px; height: 20px; background: var(--ink); color: var(--bg); font-family: var(--mono); font-size: .78rem; }
.stepstrip .is-here > * { background: var(--lcd); color: var(--lcd-ink); border-color: var(--lcd-ink); font-weight: 700; }
.stepstrip .is-done b { background: var(--gain); }
.tool-row { list-style: none; padding: 0; margin: 14px 0 24px; display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 0; border: 2px solid var(--line-strong); background: var(--line); }
.tool-row li { background: var(--surface); outline: 1px solid var(--line); padding: 10px 14px; display: flex; flex-direction: column; gap: 2px; }
.tool-row li.is-here { background: var(--lcd); color: var(--lcd-ink); font-weight: 700; }
.tool-row a { font-weight: 700; }
.tool-row small { color: var(--ink-3); font-size: .8rem; font-weight: 400; }
.tool-row li.is-here small { color: var(--lcd-dim); }
.foot__grid { grid-template-columns: 1.4fr repeat(5, minmax(0, 1fr)); }
@media (max-width: 900px) { .foot__grid { grid-template-columns: 1fr 1fr; } .foot__grid > div:first-child { grid-column: 1 / -1; } }
@media (max-width: 560px) {
  .tool-row { grid-template-columns: 1fr 1fr; margin: 8px 0 18px; }
  .tool-row li { padding: 9px 10px; }
  .tool-row small { display: none; }
  .device__row { grid-template-columns: 1fr 1.15fr; }
}
.chart { margin: 18px 0; }
.chart svg { width: 100%; max-width: 720px; height: auto; display: block; background: var(--surface); border: 1px solid var(--line); }
.chart figcaption { display: flex; justify-content: space-between; gap: 8px; max-width: 720px; font-size: .8rem; color: var(--ink-3); font-family: var(--mono); margin-top: 4px; }
.chart__grid { stroke: var(--line); stroke-width: 1; }
.chart__ref { stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 4 4; }
.chart__extra { fill: none; stroke: var(--ink-3); stroke-width: 1; opacity: .45; }
.chart__lab { font-size: 11px; fill: var(--ink-3); font-family: var(--mono); }
.tbl td.is-up, .tbl td.is-down { font-weight: 600; }
.mtx td, .mtx th { text-align: right; }
.mtx td:first-child, .mtx th:first-child { text-align: left; }
.swatch { display: inline-block; width: 12px; height: 12px; margin-right: 6px; vertical-align: -1px; border: 1px solid var(--line-strong); }
.rb-0 { background: #c00000; } .rb-1 { background: #d64018; } .rb-2 { background: #ed7d31; } .rb-3 { background: #f6b45a; } .rb-4 { background: #ffeb84; }
.rb-5 { background: #b1d580; } .rb-6 { background: #63be7b; } .rb-7 { background: #54989f; } .rb-8 { background: #4472c4; } .rb-9 { background: #9568db; }
.mtx td a { color: inherit; text-decoration: none; }
.mtx td a:hover { text-decoration: underline; }
@media (max-width: 560px) { .chart__lab { font-size: 20px; } }
.mtx td:first-child, .mtx th:first-child { position: sticky; left: 0; background: var(--surface); z-index: 1; }
.mtx th:first-child { background: var(--surface-2); }
.ga-switch { border: 2px solid var(--line-strong); background: var(--surface); padding: 12px 16px; margin: 12px 0 16px; }
.ga-switch p { margin: 6px 0; }
.btn--ghost { background: var(--surface); color: var(--ink); }
.refcode-wrap { white-space: nowrap; }
.refcode__btn { font: inherit; font-size: .82rem; font-weight: 700; margin-left: 6px; padding: 2px 10px; border: 1.5px solid var(--ink); background: var(--ink); color: var(--bg); cursor: pointer; vertical-align: 1px; }
.refcode__btn.is-done { background: var(--gain); border-color: var(--gain); }
/* pages of running text: the whole page (crumbs, step strip, title, text) sits in one centred column */
.wrap--read { width: min(46rem, 100% - 32px); }
.wrap--read .prose { max-width: none; }
.wrap--read h1 { font-size: clamp(1.75rem, 3.2vw, 2.45rem); line-height: 1.25; }