/* HuiBonus — Art Deco × Members Desk  (template #36)
   ivory paper, ink navy, brass — not Binance gold, not terminal, not swiss grid */
:root {
  --ivory: #F4EDE0;
  --paper: #FBF6EC;
  --ink: #12203A;
  --ink-soft: #1C2C4A;
  --brass: #B8954A;
  --brass-lite: #D4B56A;
  --brass-deep: #8E7030;
  --emerald: #2A6B52;
  --emerald-soft: #3C8A6A;
  --brick: #A33B32;
  --line: rgba(184, 149, 74, 0.46);
  --line-strong: #B8954A;
  --muted: #5B6577;
  --radius: 2px;
  --radius-max: 4px;
  --shadow: 0 1px 0 rgba(18, 32, 58, 0.06), 0 14px 28px rgba(18, 32, 58, 0.08);
  --font-mark: "Cinzel", "Times New Roman", serif;
  --font-head: "Noto Serif SC", "Songti SC", "Songti TC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 1120px;
  --gutter: 28px;
  --header-h: 118px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  background:
    radial-gradient(900px 420px at 50% -120px, rgba(212, 181, 106, 0.22), transparent 70%),
    var(--ivory);
  min-height: 100%;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--brass-deep); }
button { font-family: inherit; cursor: pointer; }
code, kbd { font-family: var(--font-mono); font-size: 0.92em; }

:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  inset-inline-start: 12px;
  top: -48px;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 12px;
  z-index: 20;
}
.skip-link:focus { top: 8px; }

.wrap {
  width: min(var(--max), calc(100% - 2 * var(--gutter)));
  margin-inline: auto;
}

/* —— ticker (desktop ornament; hide on fail via [hidden]) —— */
.ticker {
  background: var(--ink);
  color: var(--brass-lite);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  display: flex;
  justify-content: center;
  gap: 2.4rem;
  padding: 6px 16px;
}
.ticker[hidden] { display: none !important; }
.ticker-pair { white-space: nowrap; }
.ticker-pair.is-up { color: #8FCBB0; }
.ticker-pair.is-down { color: #E3A39A; }

/* —— masthead: symmetric hotel desk + double brass hairlines —— */
.site-header { background: var(--paper); }

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  padding-block: 10px;
  border-bottom: 1px solid var(--brass);
  box-shadow: 0 3px 0 var(--brass);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  justify-self: start;
}
.brand:hover { color: var(--ink); }
.brand-mark { display: block; flex: 0 0 32px; }
.brand-word {
  font-family: var(--font-mark);
  font-weight: 700;
  letter-spacing: 0.22em;
  font-size: 15px;
  line-height: 1;
}

.masthead-center {
  justify-self: center;
  text-align: center;
  margin: 0;
}
.masthead-kicker {
  display: block;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--brass-deep);
}
.masthead-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

.masthead-end {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--brass);
  border-radius: var(--radius-max);
  overflow: hidden;
  background: var(--ivory);
}
.lang-pill {
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-decoration: none;
  padding: 7px 10px;
  color: var(--ink);
  min-width: 44px;
  text-align: center;
}
.lang-pill + .lang-pill { border-inline-start: 1px solid var(--brass); }
.lang-pill[aria-current="page"],
.lang-pill.is-active {
  background: var(--ink);
  color: var(--brass-lite);
}

.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--brass);
  background: var(--ivory);
  color: var(--ink);
  border-radius: var(--radius);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.site-nav {
  border-bottom: 1px solid var(--brass);
  background: var(--paper);
}
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 0;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 28px;
  text-decoration: none;
  font-family: var(--font-head);
  font-size: 16px;
  color: var(--ink);
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 28px;
  bottom: 8px;
  height: 1px;
  background: transparent;
}
.nav-link:hover::after,
.nav-link[aria-current="page"]::after { background: var(--brass); }
.nav-link + .nav-link { border-inline-start: 1px solid var(--line); }

/* —— buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  font-size: 15px;
  letter-spacing: 0.04em;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}
.btn-primary {
  background: var(--brass);
  color: var(--ink);
  border-color: var(--brass-deep);
}
.btn-primary:hover { background: var(--brass-lite); color: var(--ink); }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--brass-lite);
}
.btn-ghost:hover { background: rgba(212, 181, 106, 0.12); color: var(--paper); }
.btn-ink {
  background: var(--ink);
  color: var(--brass-lite);
  border-color: var(--ink);
}
.btn-ink:hover { background: var(--ink-soft); color: var(--paper); }
.btn-line {
  background: transparent;
  color: var(--ink);
  border-color: var(--brass);
}
.btn-line:hover { background: rgba(184, 149, 74, 0.12); color: var(--ink); }

.copy-btn { min-width: 132px; }
.copy-toast {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass-lite);
  margin-inline-start: 8px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 160ms ease, transform 160ms ease;
}
.copy-toast.is-on { opacity: 1; transform: none; }

/* —— hero / membership card —— */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 36px;
  align-items: start;
  padding: 34px 0 28px;
}
.hero-kicker {
  margin: 0 0 10px;
  font-family: var(--font-mark);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--brass-deep);
}
.hero-title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.2vw, 2.55rem);
  line-height: 1.22;
  letter-spacing: 0.01em;
}
.hero-lede {
  margin: 0 0 16px;
  color: var(--ink-soft);
  max-width: 38em;
}

.tldr {
  background: var(--paper);
  border: 1px solid var(--brass);
  box-shadow: inset 0 0 0 3px var(--paper), inset 0 0 0 4px var(--brass-lite);
  padding: 14px 16px 12px;
  border-radius: var(--radius);
}
.tldr-title {
  margin: 0 0 6px;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--brass-deep);
}
.tldr-body { margin: 0; font-size: 15px; }

.member-card {
  background: var(--ink);
  color: var(--paper);
  padding: 18px 18px 16px;
  position: relative;
  box-shadow: var(--shadow);
  clip-path: polygon(
    0 14px, 14px 14px, 14px 0,
    100% 0,
    100% calc(100% - 14px),
    calc(100% - 14px) calc(100% - 14px),
    calc(100% - 14px) 100%,
    0 100%
  );
}
.member-card-inner {
  border: 1px solid var(--brass);
  padding: 16px 16px 14px;
  min-height: 100%;
}
.member-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--brass-lite);
  margin-bottom: 12px;
}
.member-card-label {
  margin: 0;
  font-size: 13px;
  color: rgba(251, 246, 236, 0.72);
}
.member-code {
  margin: 4px 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.35rem);
  letter-spacing: 0.18em;
  color: var(--brass-lite);
  line-height: 1.1;
}
.code-value { color: inherit; }
.benefit {
  margin: 14px 0 6px;
  font-size: 15px;
  line-height: 1.55;
}
.benefit-num {
  font-family: var(--font-mono);
  font-size: 1.55rem;
  color: #8FCBB0;
  font-weight: 500;
}
.note-star {
  margin: 0 0 14px;
  font-size: 12px;
  color: rgba(251, 246, 236, 0.62);
  line-height: 1.5;
}
.tool-layout > aside > .note-star {
  color: var(--muted);
  margin-top: 12px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.alert-banner {
  border: 1px solid var(--brick);
  background: #F7E7E2;
  color: var(--ink);
  padding: 12px 14px;
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
}
.alert-mark {
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--brick);
  border: 1px solid var(--brick);
  padding: 4px 6px;
  line-height: 1.2;
}
.alert-title { margin: 0 0 4px; font-family: var(--font-head); font-size: 16px; }
.alert-body { margin: 0; font-size: 14px; color: var(--ink-soft); }

.notice-strip {
  margin: 0 0 8px;
}

/* —— first-screen mixins used on articles —— */
.qa-block { display: grid; gap: 8px; }
.qa-item {
  background: var(--paper);
  border-inline-start: 3px solid var(--brass);
  padding: 8px 12px;
}
.qa-q {
  margin: 0 0 2px;
  font-family: var(--font-head);
  font-size: 15px;
}
.qa-a { margin: 0; font-size: 14px; color: var(--ink-soft); }

.score-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.score-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 12px;
  border-radius: var(--radius);
}
.score-card.is-good { border-color: var(--emerald); }
.score-card.is-warn { border-color: var(--brick); }
.score-h {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
}
.score-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 14px;
  border-top: 1px dashed var(--line);
  padding: 6px 0 0;
  margin-top: 6px;
}
.score-val { font-family: var(--font-mono); color: var(--brass-deep); }

.tree { display: grid; gap: 8px; }
.tree-step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  align-items: start;
  background: var(--paper);
  padding: 10px 12px;
  border: 1px solid var(--line);
}
.tree-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--brass-deep);
  border: 1px solid var(--brass);
  text-align: center;
  padding: 4px 0;
}
.tree-q { margin: 0 0 2px; font-family: var(--font-head); font-size: 15px; }
.tree-a { margin: 0; font-size: 14px; color: var(--ink-soft); }

.bars { display: grid; gap: 10px; }
.bar-row { display: grid; gap: 4px; }
.bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-family: var(--font-mono);
}
.bar-track {
  height: 10px;
  background: rgba(18, 32, 58, 0.08);
  border: 1px solid var(--line);
}
.bar-fill { height: 100%; background: var(--brass); width: 40%; }
.bar-fill.is-mid { background: var(--brass-lite); }
.bar-fill.is-low { background: var(--emerald); }
.bw-100 { width: 100%; }
.bw-88 { width: 88%; }
.bw-82 { width: 82%; }
.bw-80 { width: 80%; }
.bw-60 { width: 60%; }
.bw-55 { width: 55%; }
.bw-30 { width: 30%; }
.bw-28 { width: 28%; }

.timeline { list-style: none; margin: 0; padding: 0; border-inline-start: 2px solid var(--brass); }
.tl-item { padding: 0 0 14px 16px; position: relative; }
.tl-item::before {
  content: "";
  position: absolute;
  inset-inline-start: -6px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--paper);
  border: 2px solid var(--brass-deep);
}
.tl-when {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass-deep);
}
.tl-body { margin: 2px 0 0; font-size: 15px; }

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.compare-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 12px;
}
.compare-h { margin: 0 0 6px; font-family: var(--font-head); font-size: 16px; }
.compare-card p { margin: 0; font-size: 14px; color: var(--ink-soft); }

.lede-stack { display: grid; gap: 12px; }

/* —— magazine desk grid: one large + two stacked, never 3 equal emoji cards —— */
.desk-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 16px;
  margin: 8px 0 28px;
}
.feature-card,
.side-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 0;
  text-decoration: none;
  color: inherit;
  display: block;
  box-shadow: var(--shadow);
}
.feature-card:hover,
.side-card:hover { border-color: var(--brass); }
.feature-card img,
.side-card img { width: 100%; height: auto; }
.card-body { padding: 14px 16px 16px; }
.card-kicker {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass-deep);
}
.card-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 1.25rem;
  line-height: 1.35;
}
.side-stack { display: grid; gap: 16px; }
.side-card .card-title { font-size: 1.05rem; }

.section {
  padding: 8px 0 28px;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
  margin: 0 0 14px;
  border-bottom: 1px solid var(--brass);
  box-shadow: 0 3px 0 var(--brass);
  padding-bottom: 8px;
}
.section-kicker {
  margin: 0;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--brass-deep);
}
.section-title {
  margin: 2px 0 0;
  font-family: var(--font-head);
  font-size: 1.45rem;
}
.section-more {
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
}

.dir-board {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  font-size: 15px;
}
.dir-board th,
.dir-board td {
  text-align: start;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.dir-board th {
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--brass-deep);
  font-weight: 500;
  background: var(--ivory);
}
.dir-board a { text-decoration: none; font-family: var(--font-head); }
.dir-board a:hover { text-decoration: underline; }
.dir-no { font-family: var(--font-mono); color: var(--brass-deep); width: 3.2em; }

.tool-board {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 14px;
}
.tool-featured {
  background: var(--ink);
  color: var(--paper);
  padding: 18px;
  text-decoration: none;
  display: block;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}
.tool-featured:hover { color: var(--paper); }
.tool-featured .card-kicker { color: var(--brass-lite); }
.tool-featured .card-title { color: var(--paper); font-size: 1.35rem; }
.tool-featured p { color: rgba(251, 246, 236, 0.78); margin: 8px 0 0; }
.tool-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.tool-list a {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  text-decoration: none;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 10px 12px;
}
.tool-list a:hover { border-color: var(--brass); }
.tool-list strong { font-family: var(--font-head); font-weight: 600; display: block; }
.tool-list span { font-size: 13px; color: var(--muted); }

.legal-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 12px 0 4px;
}
.legal-row a { text-decoration: none; border-bottom: 1px solid var(--line); font-size: 14px; }

.home-mix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 8px 0 10px;
}

/* —— article page —— */
.crumb {
  font-size: 13px;
  color: var(--muted);
  margin: 16px 0 10px;
}
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--ink); }
.crumb-sep { margin: 0 6px; color: var(--brass); }

.article-cover {
  margin: 0 0 18px;
  background: var(--paper);
  border: 1px solid var(--line);
}
.article-cover img { width: 100%; }
.article-cover figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  padding: 8px 12px;
}

.article-head { margin: 0 0 16px; }
.article-kicker {
  margin: 0 0 8px;
  font-family: var(--font-mark);
  letter-spacing: 0.26em;
  font-size: 12px;
  color: var(--brass-deep);
}
.article-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  line-height: 1.28;
}
.article-meta {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  font-family: var(--font-mono);
}
.article-deck {
  margin: 12px 0 0;
  font-size: 17px;
}

.board-toc {
  background: var(--paper);
  border: 1px solid var(--brass);
  padding: 14px 16px;
  margin: 18px 0 22px;
}
.board-toc-title {
  margin: 0 0 8px;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--brass-deep);
}
.board-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  columns: 2;
  gap: 8px 24px;
}
.board-toc li { break-inside: avoid; margin: 0 0 6px; }
.board-toc a { text-decoration: none; }
.board-toc a::before {
  content: attr(data-n);
  font-family: var(--font-mono);
  color: var(--brass-deep);
  margin-inline-end: 8px;
}

.prose h2 {
  font-family: var(--font-head);
  font-size: 1.35rem;
  margin: 1.6em 0 0.55em;
  padding-top: 0.4em;
  border-top: 1px solid var(--line);
}
.prose h3 {
  font-family: var(--font-head);
  font-size: 1.08rem;
  margin: 1.2em 0 0.4em;
}
.prose p { margin: 0 0 0.9em; }
.prose ul, .prose ol { margin: 0 0 1em; padding-inline-start: 1.2em; }
.prose li { margin: 0 0 0.35em; }
.prose blockquote {
  margin: 0 0 1em;
  padding: 8px 14px;
  border-inline-start: 3px solid var(--brass);
  background: var(--paper);
  color: var(--ink-soft);
}

.callout {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 12px 14px;
  margin: 0 0 1em;
}
.callout-emerald { border-color: var(--emerald); }
.callout-brick { border-color: var(--brick); background: #F7E7E2; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.1em;
  font-size: 15px;
  background: var(--paper);
}
.data-table th,
.data-table td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: start;
  vertical-align: top;
}
.data-table th {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-head);
  font-weight: 600;
}
.data-table caption {
  caption-side: bottom;
  text-align: start;
  font-size: 12px;
  color: var(--muted);
  padding-top: 6px;
}

.faq-list { margin: 0 0 1.2em; }
.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
}
.faq-list summary {
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 16px;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.faq-list details p { margin: 8px 0 10px; color: var(--ink-soft); }

.related {
  margin: 28px 0 10px;
  border-top: 1px solid var(--brass);
  padding-top: 14px;
}
.related-title {
  margin: 0 0 8px;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--brass-deep);
}
.related ul { margin: 0; padding-inline-start: 1.1em; }

/* —— tools —— */
.tool-shell { padding: 8px 0 36px; }
.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.9fr);
  gap: 18px;
  align-items: start;
}
.tool-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 16px;
}
.tool-panel-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 1.15rem;
}
.field { margin: 0 0 12px; }
.field-label {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  color: var(--ink-soft);
}
.field-input,
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--brass);
  background: var(--ivory);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 8px 10px;
  font: 16px/1.4 var(--font-body);
}
.field-input:focus,
.field select:focus {
  outline: 2px solid var(--brass-lite);
  outline-offset: 1px;
}
.seg {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.seg button,
.choice {
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--brass);
  background: var(--ivory);
  color: var(--ink);
  border-radius: var(--radius);
  font-size: 14px;
}
.seg button.is-on,
.choice.is-on {
  background: var(--ink);
  color: var(--brass-lite);
}
.check-list { display: grid; gap: 8px; }
.check-row {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 8px;
  align-items: start;
  font-size: 15px;
}
.check-row input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--brass-deep); }

.result-card {
  background: var(--ink);
  color: var(--paper);
  padding: 18px 16px 16px;
  border: 1px solid var(--brass);
  box-shadow: inset 0 0 0 3px var(--ink), inset 0 0 0 4px var(--brass-lite);
  border-radius: var(--radius);
}
.result-kicker {
  margin: 0 0 6px;
  font-family: var(--font-mark);
  letter-spacing: 0.22em;
  font-size: 11px;
  color: var(--brass-lite);
}
.result-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 5.4vw, 3.3rem);
  color: var(--brass-lite);
  line-height: 1.05;
  letter-spacing: 0.04em;
}
.result-unit {
  font-size: 0.42em;
  letter-spacing: 0;
  color: rgba(251, 246, 236, 0.7);
  margin-inline-start: 6px;
}
.result-sub { margin: 8px 0 12px; color: rgba(251, 246, 236, 0.78); font-size: 14px; }
.result-rows { display: grid; gap: 6px; font-size: 14px; }
.result-line {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px solid rgba(184, 149, 74, 0.35);
  padding-top: 6px;
  font-family: var(--font-mono);
}
.viz { margin-top: 14px; }
.viz svg { width: 100%; height: auto; display: block; }
.lamp {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}
.lamp-red { color: #E3A39A; }
.lamp-amber { color: var(--brass-lite); }
.lamp-green { color: #8FCBB0; }

.guide {
  margin: 28px 0 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 8px 16px 12px;
}
.guide > summary {
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 1.1rem;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.guide h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  margin: 1.1em 0 0.4em;
}

/* —— indexes / legal / 404 —— */
.page-head { padding: 18px 0 8px; }
.page-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
}
.index-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 8px 0 24px;
}
.index-item {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px;
  text-decoration: none;
  color: inherit;
}
.index-item:hover { border-color: var(--brass); }
.index-item strong { font-family: var(--font-head); display: block; margin-bottom: 4px; }
.index-item span { font-size: 14px; color: var(--muted); }

.legal-body { max-width: 42em; padding-bottom: 40px; }
.legal-body h2 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  margin: 1.4em 0 0.5em;
}

.error-page {
  min-height: 58vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 16px;
}
.error-code {
  font-family: var(--font-mark);
  font-size: 4rem;
  letter-spacing: 0.2em;
  color: var(--brass);
  margin: 0;
}
.error-page h1 { font-family: var(--font-head); margin: 0 0 10px; }
.error-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 16px; }

.en-desk {
  max-width: 36em;
  padding: 36px 0 64px;
}
.en-desk h1 { font-family: var(--font-mark); letter-spacing: 0.12em; }

/* —— footer —— */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  margin-top: 24px;
  padding: 28px 0 18px;
  border-top: 4px solid var(--brass);
}
.site-footer a { color: var(--brass-lite); text-decoration: none; }
.site-footer a:hover { color: var(--paper); text-decoration: underline; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 22px;
  margin-bottom: 18px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.footer-word {
  font-family: var(--font-mark);
  letter-spacing: 0.22em;
  font-size: 14px;
}
.footer-col h2 {
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--brass-lite);
  margin: 0 0 8px;
  font-weight: 500;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin: 0 0 6px; }
.footer-legal {
  border-top: 1px solid rgba(184, 149, 74, 0.35);
  padding-top: 12px;
  font-size: 13px;
  color: rgba(251, 246, 236, 0.72);
  line-height: 1.65;
}
.footer-legal p { margin: 0 0 8px; }

/* —— Official Binance mark (affiliate slots only; not identity) —— */
:root { --bn: #F0B90B; --bn-ink: #0B0E11; }
.bn-mark {
  display: block;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
}
.bn-mark-lg { width: 56px; height: 56px; }
.bn-mark-md { width: 36px; height: 36px; }
.bn-mark-sm { width: 24px; height: 24px; }

.bn-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 16px;
}
.bn-lockup-cap {
  margin: 0;
  font-family: var(--font-mark);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--brass-deep);
  max-width: 12em;
  line-height: 1.35;
}

.bn-hero-card {
  background: var(--bn);
  color: var(--bn-ink);
  padding: 14px 14px 12px;
}
.bn-hero-card .member-card-inner { border-color: var(--bn-ink); padding: 14px 14px 12px; }
.bn-hero-card .member-card-head { color: var(--bn-ink); }
.bn-hero-card .member-card-label { color: rgba(11, 14, 17, 0.72); }
.bn-hero-card .member-code,
.bn-hero-card .code-value { color: var(--bn-ink); }
.bn-hero-card .benefit { color: var(--bn-ink); }
.bn-hero-card .benefit-num { color: var(--bn-ink); }
.bn-hero-card .note-star { color: rgba(11, 14, 17, 0.7); }
.bn-hero-card .btn-primary {
  background: var(--bn-ink);
  color: var(--bn);
  border-color: var(--bn-ink);
}
.bn-hero-card .btn-primary:hover { background: #1c2433; color: var(--bn); }
.bn-hero-card .btn-ghost {
  background: transparent;
  color: var(--bn-ink);
  border-color: var(--bn-ink);
}
.bn-hero-card .btn-ghost:hover { background: rgba(11, 14, 17, 0.08); color: var(--bn-ink); }
.bn-hero-card .copy-toast { color: var(--bn-ink); }
.bn-badge {
  margin: 8px 0 10px;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.12em;
}
.bn-disc { margin: 8px 0 0; font-size: 13px; line-height: 1.55; }

.bn-cta,
.bn-convert-band,
.bn-code-strip,
.bn-code-inset,
.bn-code-ticket,
.bn-code-stamp,
.bn-code-tool,
.bn-code-chip {
  margin: 1.15em 0;
  padding: 14px 16px;
}
.bn-cta {
  background: var(--bn);
  color: var(--bn-ink);
  border: 1px solid var(--bn-ink);
}
.bn-cta .btn-ink { margin-top: 10px; }
.bn-cta .btn-primary {
  background: var(--bn-ink);
  color: var(--bn);
  border-color: var(--bn-ink);
}
.bn-cta .btn-primary:hover { background: #1c2433; color: var(--bn); }
.bn-cta .copy-toast { color: var(--bn-ink); }
.bn-cta .code-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  letter-spacing: 0.12em;
}
.bn-cta-kicker {
  margin: 8px 0 6px;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.14em;
}
.bn-cta-lead { margin: 0; }
.bn-convert-band {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--bn);
}
.bn-convert-band .code-value { color: var(--bn); font-family: var(--font-mono); font-size: 1.35rem; letter-spacing: 0.12em; }
.bn-convert-band .bn-disc { color: rgba(251, 246, 236, 0.78); }
.bn-convert-kicker {
  margin: 0 0 6px;
  font-family: var(--font-mark);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bn);
}
.bn-code-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 8px 0;
}
.bn-code-line .code-value {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  letter-spacing: 0.14em;
}

.bn-code-strip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  background: var(--bn);
  color: var(--bn-ink);
  border: 1px solid var(--bn-ink);
}
.bn-code-inset {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--bn);
  box-shadow: inset 0 0 0 3px var(--ink), inset 0 0 0 4px var(--bn);
}
.bn-code-inset .code-value { color: var(--bn); font-family: var(--font-mono); font-size: 1.35rem; }
.bn-code-ticket {
  background: var(--bn);
  color: var(--bn-ink);
  clip-path: polygon(0 12px, 12px 12px, 12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  border: 0;
  padding: 18px 20px;
}
.bn-code-stamp {
  border: 2px dashed var(--bn);
  background: var(--paper);
  color: var(--ink);
  text-align: left;
}
.bn-code-tool {
  background: var(--paper);
  border-left: 6px solid var(--bn);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.bn-code-chip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  background: var(--bn);
  color: var(--bn-ink);
  padding: 12px 14px;
}
.bn-code-strip .btn-primary,
.bn-code-ticket .btn-primary,
.bn-code-chip .btn-primary {
  background: var(--bn-ink);
  color: var(--bn);
  border-color: var(--bn-ink);
}
.bn-code-strip .copy-toast,
.bn-code-ticket .copy-toast,
.bn-code-chip .copy-toast { color: var(--bn-ink); }

.partner-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  padding: 8px 0 10px;
  border-top: 1px solid rgba(240, 185, 11, 0.35);
  font-size: 12px;
  color: rgba(251, 246, 236, 0.72);
  line-height: 1.45;
}
.partner-bar p { margin: 0; }

@media (min-width: 721px) {
  .bn-mark-lg { width: 64px; height: 64px; }
}

/* —— 360 / tablet —— */
@media (max-width: 860px) {
  .hero,
  .desk-grid,
  .tool-board,
  .tool-layout,
  .home-mix,
  .footer-grid,
  .index-grid,
  .score-board,
  .compare-grid { grid-template-columns: 1fr; }
  .board-toc ol { columns: 1; }
  .masthead { grid-template-columns: 1fr auto; }
  .masthead-center { display: none; }
}

@media (max-width: 720px) {
  :root { --gutter: 16px; }
  body { font-size: 16px; }
  .ticker { display: none !important; }
  .nav-toggle { display: inline-flex; }
  .site-nav { display: none; }
  .site-nav.is-open { display: block; border-bottom: 1px solid var(--brass); }
  .nav-list { flex-direction: column; }
  .nav-link + .nav-link { border-inline-start: 0; border-top: 1px solid var(--line); }
  .hero { padding-top: 10px; gap: 14px; }
  .hero-title { font-size: 1.42rem; }
  .hero-lede { display: none; }
  .lede-stack .tldr { display: none; }
  .bn-lockup { margin: 0 0 10px; gap: 10px; }
  .bn-lockup-cap { font-size: 11px; max-width: 14em; }
  .bn-mark-lg { width: 40px; height: 40px; }
  .bn-hero-card .bn-mark-lg { display: none; }
  .bn-hero-card .bn-badge { margin-top: 0; }
  .member-card { margin-top: 2px; }
  .member-code { font-size: 1.85rem; }
  .dir-board { display: block; overflow-x: auto; }
  .bn-code-strip,
  .bn-convert-band { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
  .brand-word { letter-spacing: 0.14em; font-size: 13px; }
  .hero-title { font-size: 1.32rem; }
  .lang-pill { padding: 7px 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}