/* BozonPay design system — Bootstrap 5.3 overrides and components.
   Palette: violet #8B5CF6, secondary violet #AD91FF, deep purple #17131F, dark surface #231F2B, light background #F8F7FC,
   light surface #FFFFFF, text #231F20, secondary text #777184, border #E8E3F0, success #16A34A, warning #F59E0B,
   error #DC2626. Buttons use a slightly deeper violet (#7C4DEB) so white labels meet WCAG AA contrast (5.1:1).
   Edges 4–8 px, thin borders, restrained motion, tabular numerals for money. */

:root,
[data-bs-theme="light"] {
  --bz-primary: #8B5CF6;
  --bz-primary-rgb: 139, 92, 246;
  --bz-secondary: #AD91FF;
  --bz-secondary-rgb: 173, 145, 255;
  --bz-deep: #17131F;
  --bz-surface-dark: #231F2B;
  --bz-interactive: #7C4DEB;
  --bz-interactive-hover: #6D3FE0;
  --bz-interactive-active: #5B30C9;
  --bz-success: #16A34A;
  --bz-warning: #F59E0B;
  --bz-error: #DC2626;
  --bz-gradient: linear-gradient(135deg, #8B5CF6 0%, #AD91FF 100%);
  --bz-gradient-soft: linear-gradient(135deg, rgba(139, 92, 246, .09) 0%, rgba(173, 145, 255, .09) 100%);

  --bz-bg: #F8F7FC;
  --bz-surface: #FFFFFF;
  --bz-surface-2: #F3F0FA;
  --bz-border: #E8E3F0;
  --bz-border-strong: #D9D1E8;
  --bz-text: #231F20;
  --bz-muted: #777184;
  --bz-link: #6D3FE0;
  --bz-accent-text: #6D3FE0;
  --bz-shadow: 0 1px 2px rgba(23, 19, 31, .04), 0 8px 24px -16px rgba(23, 19, 31, .18);
  --bz-sidebar-bg: #17131F;
  --bz-sidebar-text: #C9C2DB;
  --bz-sidebar-muted: #8A839C;
  --bz-sidebar-active: #FFFFFF;

  --bs-body-bg: var(--bz-bg);
  --bs-body-color: var(--bz-text);
  --bs-secondary-color: var(--bz-muted);
  --bs-border-color: var(--bz-border);
  --bs-primary: #8B5CF6;
  --bs-primary-rgb: 139, 92, 246;
  --bs-success: #16A34A;
  --bs-success-rgb: 22, 163, 74;
  --bs-warning: #F59E0B;
  --bs-warning-rgb: 245, 158, 11;
  --bs-danger: #DC2626;
  --bs-danger-rgb: 220, 38, 38;
  --bs-link-color: var(--bz-link);
  --bs-link-color-rgb: 109, 63, 224;
  --bs-link-hover-color: #5B30C9;
  --bs-border-radius: .375rem;
  --bs-border-radius-sm: .25rem;
  --bs-border-radius-lg: .5rem;
  --bs-border-radius-xl: .5rem;
  --bs-border-radius-pill: .5rem;
  --bs-focus-ring-color: rgba(var(--bz-primary-rgb), .32);
  --bs-font-sans-serif: "Inter", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --bs-font-monospace: "JetBrains Mono", "Cascadia Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --bz-font-display: "Inter Display", "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

[data-bs-theme="dark"] {
  --bz-bg: #17131F;
  --bz-surface: #231F2B;
  --bz-surface-2: #2B2635;
  --bz-border: #3A3346;
  --bz-border-strong: #4A4258;
  --bz-text: #F8F7FC;
  --bz-muted: #A8A2B8;
  --bz-link: #AD91FF;
  --bz-accent-text: #C4B2FF;
  --bz-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -18px rgba(0, 0, 0, .7);
  --bz-sidebar-bg: #120F18;
  --bz-gradient-soft: linear-gradient(135deg, rgba(139, 92, 246, .16) 0%, rgba(173, 145, 255, .08) 100%);
  --bs-body-bg: var(--bz-bg);
  --bs-body-color: var(--bz-text);
  --bs-secondary-color: var(--bz-muted);
  --bs-border-color: var(--bz-border);
  --bs-link-color: var(--bz-link);
  --bs-link-color-rgb: 173, 145, 255;
  --bs-link-hover-color: #D2C4FF;
  --bs-tertiary-bg: var(--bz-surface-2);
}

html, body { min-height: 100%; }
body {
  background: var(--bz-bg);
  font-family: var(--bs-font-sans-serif);
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  letter-spacing: -.003em;
}

h1, h2, h3, .display-5, .display-6 { font-family: var(--bz-font-display); letter-spacing: -.025em; font-weight: 680; }
h4, h5, h6 { letter-spacing: -.01em; font-weight: 640; }
.text-muted, .text-body-secondary { color: var(--bz-muted) !important; }
.text-accent { color: var(--bz-accent-text) !important; }
.num, .amount, td.num, th.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.mono, code, .address { font-family: var(--bs-font-monospace); font-size: .86em; }
code { color: var(--bz-accent-text); }
.address { word-break: break-all; }
:focus-visible { outline: 2px solid rgba(var(--bz-primary-rgb), .7); outline-offset: 2px; }

/* ---------- brand ---------- */
.logo { display: block; height: 28px; width: auto; }
.logo-sm { height: 22px; }
.logo-lg { height: 36px; }
[data-bs-theme="dark"] .logo-for-light, [data-bs-theme="light"] .logo-for-dark { display: none; }
.brand-mark { width: 28px; height: 28px; display: inline-block; flex-shrink: 0; }

/* ---------- buttons ---------- */
.btn { border-radius: var(--bs-border-radius); font-weight: 580; letter-spacing: .003em; transition: transform .12s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  --bs-btn-bg: var(--bz-interactive); --bs-btn-border-color: var(--bz-interactive); --bs-btn-color: #fff;
  --bs-btn-hover-bg: var(--bz-interactive-hover); --bs-btn-hover-border-color: var(--bz-interactive-hover); --bs-btn-hover-color: #fff;
  --bs-btn-active-bg: var(--bz-interactive-active); --bs-btn-active-border-color: var(--bz-interactive-active);
  --bs-btn-disabled-bg: #A994E8; --bs-btn-disabled-border-color: #A994E8;
}
.btn-primary:hover { box-shadow: 0 8px 22px -12px rgba(var(--bz-primary-rgb), .9); }
.btn-outline-primary {
  --bs-btn-color: var(--bz-accent-text); --bs-btn-border-color: rgba(var(--bz-primary-rgb), .45);
  --bs-btn-hover-bg: var(--bz-interactive); --bs-btn-hover-border-color: var(--bz-interactive); --bs-btn-hover-color: #fff;
  --bs-btn-active-bg: var(--bz-interactive-active); --bs-btn-active-border-color: var(--bz-interactive-active);
}
.btn-ghost { background: transparent; border: 1px solid var(--bz-border); color: var(--bz-text); }
.btn-ghost:hover, .btn-ghost:focus-visible { background: var(--bz-surface-2); border-color: var(--bz-border-strong); color: var(--bz-text); }
.btn-light-on-dark { background: #fff; color: var(--bz-deep); border: 0; }
.btn-light-on-dark:hover { background: #EFEAFB; color: var(--bz-deep); }

/* ---------- surfaces ---------- */
.bz-card, .card {
  background: var(--bz-surface);
  border: 1px solid var(--bz-border);
  border-radius: var(--bs-border-radius-lg);
  box-shadow: var(--bz-shadow);
}
.card-header { background: transparent; border-bottom: 1px solid var(--bz-border); font-weight: 620; padding: .85rem 1.1rem; }
.bz-card-hover { transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.bz-card-hover:hover { border-color: rgba(var(--bz-primary-rgb), .45); transform: translateY(-2px); }

.stat-tile { padding: 1.1rem 1.25rem; position: relative; overflow: hidden; }
.stat-tile .label { font-size: .72rem; text-transform: uppercase; letter-spacing: .09em; color: var(--bz-muted); font-weight: 620; }
.stat-tile .value { font-size: 1.6rem; font-weight: 680; font-variant-numeric: tabular-nums; margin-top: .3rem; letter-spacing: -.02em; }
.stat-tile .hint { font-size: .8rem; color: var(--bz-muted); }
.stat-tile::before { content: ""; position: absolute; inset: 0 auto auto 0; height: 2px; width: 100%; background: var(--bz-gradient); opacity: .9; }

/* ---------- app shell (merchant and admin) ---------- */
.app-shell { display: flex; min-height: 100vh; }
.app-sidebar {
  width: 252px; flex-shrink: 0; background: var(--bz-sidebar-bg); color: var(--bz-sidebar-text);
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; overflow-y: auto;
  border-right: 1px solid rgba(255, 255, 255, .05);
}
.app-sidebar .brand { padding: 1.15rem 1.25rem 1rem; display: flex; flex-direction: column; gap: .35rem; text-decoration: none; }
.app-sidebar .brand .area { font-size: .64rem; text-transform: uppercase; letter-spacing: .16em; color: var(--bz-sidebar-muted); }
.app-sidebar .nav-section { font-size: .66rem; text-transform: uppercase; letter-spacing: .14em; color: var(--bz-sidebar-muted); padding: 1.05rem 1.25rem .35rem; }
.app-sidebar .nav-link {
  color: var(--bz-sidebar-text); padding: .46rem 1.25rem; display: flex; align-items: center; gap: .7rem; font-size: .9rem;
  border-left: 2px solid transparent; transition: color .15s ease, background-color .15s ease, border-color .15s ease;
}
.app-sidebar .nav-link i { font-size: 1rem; opacity: .85; }
.app-sidebar .nav-link:hover { color: #fff; background: rgba(255, 255, 255, .04); }
.app-sidebar .nav-link.active { color: var(--bz-sidebar-active); background: linear-gradient(90deg, rgba(var(--bz-primary-rgb), .24), transparent); border-left-color: var(--bz-primary); }
.app-sidebar .sidebar-foot { color: var(--bz-sidebar-muted); }
.app-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.app-topbar {
  height: 60px; display: flex; align-items: center; gap: 1rem; padding: 0 1.5rem; background: color-mix(in srgb, var(--bz-surface) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid var(--bz-border); position: sticky; top: 0; z-index: 1020;
}
.app-content { padding: 1.6rem; flex: 1; }
.page-header { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 1.35rem; }
.page-header h1 { font-size: 1.5rem; margin: 0; }
.page-header .subtitle { color: var(--bz-muted); font-size: .92rem; margin-top: .25rem; }
.page-eyebrow { font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; color: var(--bz-accent-text); font-weight: 650; }

@media (max-width: 991.98px) {
  .app-sidebar { position: fixed; z-index: 1045; transform: translateX(-100%); transition: transform .22s ease; }
  .app-sidebar.open { transform: translateX(0); box-shadow: 0 0 40px rgba(0, 0, 0, .45); }
  .app-content { padding: 1rem; }
}

/* ---------- tables ---------- */
.table { --bs-table-bg: transparent; --bs-table-color: var(--bz-text); margin-bottom: 0; }
.table > :not(caption) > * > * { padding: .66rem .85rem; border-bottom-color: var(--bz-border); }
.table thead th { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--bz-muted); font-weight: 640; background: var(--bz-surface-2); border-bottom: 1px solid var(--bz-border); white-space: nowrap; }
.table-hover > tbody > tr:hover > * { --bs-table-bg-state: rgba(var(--bz-primary-rgb), .045); }
.table-responsive { border-radius: var(--bs-border-radius-lg); }

/* ---------- forms ---------- */
.form-control, .form-select { border-radius: var(--bs-border-radius); border-color: var(--bz-border); background-color: var(--bz-surface); color: var(--bz-text); }
.form-control:focus, .form-select:focus { border-color: rgba(var(--bz-primary-rgb), .65); box-shadow: 0 0 0 .2rem rgba(var(--bz-primary-rgb), .16); }
.form-label { font-size: .84rem; font-weight: 620; color: var(--bz-text); }
.form-text { color: var(--bz-muted); }
.form-check-input:checked { background-color: var(--bz-interactive); border-color: var(--bz-interactive); }

/* ---------- status ---------- */
.badge { border-radius: var(--bs-border-radius-sm); font-weight: 620; letter-spacing: .02em; padding: .38em .62em; }
.badge-status { border: 1px solid transparent; }
.st-success { background: rgba(22, 163, 74, .10); color: #15803D; border-color: rgba(22, 163, 74, .24); }
.st-warning { background: rgba(245, 158, 11, .12); color: #B45309; border-color: rgba(245, 158, 11, .30); }
.st-danger { background: rgba(220, 38, 38, .09); color: #B91C1C; border-color: rgba(220, 38, 38, .24); }
.st-info { background: rgba(var(--bz-primary-rgb), .10); color: #6D3FE0; border-color: rgba(var(--bz-primary-rgb), .26); }
.st-neutral { background: rgba(119, 113, 132, .10); color: #5E5869; border-color: rgba(119, 113, 132, .24); }
[data-bs-theme="dark"] .st-success { color: #4ADE80; background: rgba(22, 163, 74, .16); }
[data-bs-theme="dark"] .st-warning { color: #FBBF24; background: rgba(245, 158, 11, .16); }
[data-bs-theme="dark"] .st-danger { color: #F87171; background: rgba(220, 38, 38, .16); }
[data-bs-theme="dark"] .st-info { color: #C4B2FF; background: rgba(var(--bz-primary-rgb), .18); }
[data-bs-theme="dark"] .st-neutral { color: #C9C2DB; background: rgba(201, 194, 219, .08); border-color: rgba(201, 194, 219, .18); }
.text-success { color: #15803D !important; }
.text-danger { color: var(--bz-error) !important; }
[data-bs-theme="dark"] .text-success { color: #4ADE80 !important; }
[data-bs-theme="dark"] .text-danger { color: #F87171 !important; }

.dot { width: .55rem; height: .55rem; border-radius: 50%; display: inline-block; }
.dot-ok { background: #22C55E; box-shadow: 0 0 0 3px rgba(34, 197, 94, .18); }
.dot-warn { background: var(--bz-warning); box-shadow: 0 0 0 3px rgba(245, 158, 11, .18); }
.dot-bad { background: #EF4444; box-shadow: 0 0 0 3px rgba(239, 68, 68, .18); }
.dot-off { background: #9CA3AF; }
.asset-chip { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--bz-border); background: var(--bz-surface); border-radius: var(--bs-border-radius-sm); padding: .2rem .5rem; font-size: .8rem; font-weight: 600; }
.asset-chip .net { color: var(--bz-muted); font-weight: 500; }

/* ---------- loading ---------- */
.bz-loader { width: 1.4rem; height: 1.4rem; display: inline-block; position: relative; vertical-align: middle; }
.bz-loader::before, .bz-loader::after { content: ""; position: absolute; inset: 0; border-radius: 50%; border: 2px solid transparent; }
.bz-loader::before { border-top-color: var(--bz-primary); border-right-color: var(--bz-primary); animation: bz-spin .9s linear infinite; transform: rotateX(60deg); }
.bz-loader::after { border-bottom-color: var(--bz-secondary); border-left-color: var(--bz-secondary); animation: bz-spin 1.3s linear infinite reverse; transform: rotateY(60deg); }
@keyframes bz-spin { to { rotate: 360deg; } }

/* ---------- public website ---------- */
.public-nav { background: color-mix(in srgb, var(--bz-bg) 82%, transparent); backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid var(--bz-border); }
.public-nav .nav-link { font-weight: 540; color: var(--bz-text); opacity: .82; }
.public-nav .nav-link:hover, .public-nav .nav-link.active { opacity: 1; }
.section { padding: 5rem 0; }
.section-tight { padding: 3.5rem 0; }
.section-alt { background: var(--bz-surface); border-top: 1px solid var(--bz-border); border-bottom: 1px solid var(--bz-border); }
.section-dark { background: var(--bz-deep); color: #F8F7FC; --bz-muted: #A8A2B8; --bz-border: #3A3346; --bz-surface: #231F2B; --bz-surface-2: #2B2635; --bz-text: #F8F7FC; --bz-accent-text: #C4B2FF; }
.eyebrow { display: inline-block; font-size: .74rem; text-transform: uppercase; letter-spacing: .16em; font-weight: 680; color: var(--bz-accent-text); margin-bottom: .75rem; }
.section-title { font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1.12; margin-bottom: .8rem; }
.section-lead { color: var(--bz-muted); font-size: 1.08rem; max-width: 46rem; }
.gradient-text { background: var(--bz-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }

.hero { padding: 5.5rem 0 4.5rem; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -30% -15% auto auto; width: 72%; height: 130%;
  background: radial-gradient(closest-side, rgba(var(--bz-primary-rgb), .18), transparent 72%); pointer-events: none;
}
.hero h1 { font-size: clamp(2.5rem, 5.4vw, 4.1rem); line-height: 1.02; font-weight: 760; letter-spacing: -.035em; }
.hero .lead { font-size: 1.18rem; color: var(--bz-muted); max-width: 36rem; }
.hero-visual { width: 100%; height: auto; display: block; }
.hero-visual .node rect { fill: var(--bz-surface); stroke: var(--bz-border); }
.hero-visual .node text { fill: var(--bz-text); font: 600 13px var(--bs-font-sans-serif); }
.hero-visual .node .sub { fill: var(--bz-muted); font-weight: 500; font-size: 11px; }
.hero-visual .rail { fill: none; stroke: var(--bz-border-strong); stroke-width: 1.5; stroke-dasharray: 3 6; }
.hero-visual .pulse { fill: var(--bz-primary); }
.hero-visual .pulse-alt { fill: var(--bz-secondary); }
.hero-visual .core-ring { fill: none; stroke: rgba(var(--bz-primary-rgb), .25); }
.trust-row { display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; color: var(--bz-muted); font-size: .9rem; }
.trust-row i { color: var(--bz-accent-text); margin-right: .35rem; }

.network-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: .9rem; }
.network-card { padding: 1rem 1.1rem; }
.network-card .name { font-weight: 650; }
.network-card .assets { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .55rem; }
.ticker { font: 600 .74rem var(--bs-font-monospace); padding: .15rem .45rem; border-radius: var(--bs-border-radius-sm); background: var(--bz-gradient-soft); color: var(--bz-accent-text); border: 1px solid rgba(var(--bz-primary-rgb), .18); }

.feature-icon { width: 42px; height: 42px; border-radius: var(--bs-border-radius); display: grid; place-items: center; background: var(--bz-gradient-soft); color: var(--bz-accent-text); border: 1px solid rgba(var(--bz-primary-rgb), .22); font-size: 1.2rem; }
.feature-list { list-style: none; padding: 0; margin: 0; }
.feature-list li { display: flex; gap: .6rem; padding: .35rem 0; color: var(--bz-text); }
.feature-list li i { color: var(--bz-accent-text); margin-top: .1rem; }

.code-window { background: #120F18; border: 1px solid #2E2838; border-radius: var(--bs-border-radius-lg); overflow: hidden; box-shadow: var(--bz-shadow); }
.code-window .bar { display: flex; align-items: center; gap: .4rem; padding: .6rem .9rem; border-bottom: 1px solid #2E2838; color: #8A839C; font-size: .78rem; }
.code-window .bar .dots { display: inline-flex; gap: .35rem; margin-right: .5rem; }
.code-window .bar .dots span { width: .55rem; height: .55rem; border-radius: 50%; background: #3A3346; }
.code-window pre { margin: 0; padding: 1.1rem 1.2rem; color: #E7E2F3; font-size: .82rem; line-height: 1.65; overflow-x: auto; }
.code-window .k { color: #C4B2FF; } .code-window .s { color: #86EFAC; } .code-window .c { color: #8A839C; } .code-window .n { color: #FBBF24; }

.checkout-demo { max-width: 400px; margin-inline: auto; padding: 1.4rem; }
.checkout-demo .qr { width: 132px; height: 132px; flex-shrink: 0; border-radius: var(--bs-border-radius); background: #fff; padding: 6px; border: 1px solid var(--bz-border); }
.checkout-demo .qr svg { display: block; width: 100%; height: 100%; }
.step-list { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.step-list li { counter-increment: step; display: flex; gap: .9rem; padding: .55rem 0; }
.step-list li::before { content: counter(step, decimal-leading-zero); font: 600 .78rem var(--bs-font-monospace); color: var(--bz-accent-text); padding-top: .15rem; }

.pricing-card { padding: 1.6rem; height: 100%; display: flex; flex-direction: column; }
.pricing-card.featured { border-color: rgba(var(--bz-primary-rgb), .55); box-shadow: 0 0 0 1px rgba(var(--bz-primary-rgb), .25), var(--bz-shadow); }
.pricing-card .price { font-size: 2rem; font-weight: 720; letter-spacing: -.03em; }

.faq .accordion-item { background: var(--bz-surface); border: 1px solid var(--bz-border); border-radius: var(--bs-border-radius-lg) !important; margin-bottom: .6rem; overflow: hidden; }
.faq .accordion-button { background: transparent; color: var(--bz-text); font-weight: 600; box-shadow: none; }
.faq .accordion-button:not(.collapsed) { color: var(--bz-accent-text); }
.faq .accordion-body { color: var(--bz-muted); padding-top: 0; }

.cta-band { border-radius: var(--bs-border-radius-lg); padding: 3rem 2rem; background: radial-gradient(800px 300px at 85% 0%, rgba(var(--bz-primary-rgb), .45), transparent 70%), var(--bz-deep); color: #F8F7FC; border: 1px solid #2E2838; }
.cta-band .lead { color: #CFC8E3; }

.site-footer { border-top: 1px solid var(--bz-border); padding: 3.5rem 0 2rem; color: var(--bz-muted); font-size: .9rem; background: var(--bz-surface); }
.site-footer h2 { font-size: .76rem; text-transform: uppercase; letter-spacing: .14em; color: var(--bz-text); font-weight: 680; margin-bottom: .9rem; font-family: var(--bs-font-sans-serif); }
.site-footer a { color: var(--bz-muted); text-decoration: none; }
.site-footer a:hover { color: var(--bz-text); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .45rem; }
.footer { border-top: 1px solid var(--bz-border); padding: 2rem 0; color: var(--bz-muted); font-size: .9rem; }

.legal { max-width: 820px; }
.legal h2 { font-size: 1.1rem; margin-top: 2rem; }
.legal .tbc { background: rgba(245, 158, 11, .14); border: 1px dashed rgba(245, 158, 11, .6); border-radius: var(--bs-border-radius-sm); padding: 0 .3rem; font-weight: 600; }

/* ---------- auth ---------- */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 2rem 1rem; background: radial-gradient(1100px 560px at 100% 0%, rgba(var(--bz-primary-rgb), .12), transparent 60%), var(--bz-bg); }
.auth-card { width: 100%; padding: 2rem; }
.qr-box { background: #fff; padding: .75rem; border: 1px solid var(--bz-border); border-radius: var(--bs-border-radius); display: inline-block; }
.qr-box svg { display: block; width: 220px; height: 220px; }

/* ---------- checkout ---------- */
.checkout-wrap { min-height: 100vh; background: radial-gradient(900px 480px at 50% -12%, rgba(var(--bz-primary-rgb), .16), transparent 70%), var(--bz-bg); padding: 2rem 1rem 2.5rem; }
.checkout-card { max-width: 560px; margin: 0 auto; }
.checkout-brand { display: flex; justify-content: center; margin-bottom: 1.25rem; }
.checkout-amount { font-size: 2.1rem; font-weight: 720; font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.asset-option { border: 1px solid var(--bz-border); border-radius: var(--bs-border-radius); padding: .8rem 1rem; display: flex; align-items: center; justify-content: space-between; background: var(--bz-surface); transition: border-color .15s ease, background-color .15s ease; width: 100%; text-align: left; color: inherit; }
.asset-option:hover, .asset-option:focus-visible { border-color: var(--bz-primary); background: var(--bz-gradient-soft); }
.progress { border-radius: var(--bs-border-radius-sm); height: .45rem; background: var(--bz-surface-2); }
.progress-bar { background-image: var(--bz-gradient); }
.countdown { font-variant-numeric: tabular-nums; font-weight: 680; }
.powered-by { display: inline-flex; align-items: center; gap: .45rem; color: var(--bz-muted); text-decoration: none; }
.powered-by img { height: 15px; }
.min-w-0 { min-width: 0; }
@media (max-width: 575.98px) {
  .checkout-wrap { padding: 1rem .75rem; }
  .checkout-amount { font-size: 1.6rem; }
  .checkout-card .qr-box svg { width: 200px; height: 200px; }
  .section { padding: 3.5rem 0; }
  .hero { padding: 3.5rem 0 3rem; }
  .cta-band { padding: 2.2rem 1.25rem; }
}

/* ---------- misc ---------- */
.copy-btn { cursor: pointer; }
.fade-in { animation: bz-fade .4s ease both; }
@keyframes bz-fade { from { opacity: .5; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.app-sidebar { scrollbar-width: thin; scrollbar-color: rgba(255, 255, 255, .12) transparent; }
.empty-state { padding: 3rem 1rem; text-align: center; color: var(--bz-muted); }
.empty-state i { font-size: 2rem; display: block; margin-bottom: .5rem; color: var(--bz-secondary); }
.kv dt { font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; color: var(--bz-muted); font-weight: 620; }
.kv dd { margin-bottom: .85rem; }
.alert { border-radius: var(--bs-border-radius); }
.emergency-banner { background: repeating-linear-gradient(45deg, #B91C1C, #B91C1C 12px, #991B1B 12px, #991B1B 24px); color: #fff; font-weight: 600; font-size: .9rem; padding: .45rem 1.5rem; }
.chart-box { position: relative; height: 260px; }
.secret-box { background: var(--bz-surface-2); border: 1px dashed rgba(var(--bz-primary-rgb), .5); padding: .85rem 1rem; border-radius: var(--bs-border-radius); }
.dropdown-menu { border-color: var(--bz-border); box-shadow: var(--bz-shadow); border-radius: var(--bs-border-radius-lg); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .hero-visual .pulse, .hero-visual .pulse-alt { display: none; }
}

section[id] { scroll-margin-top: 72px; }
.hero .btn-lg { padding: .72rem 1.2rem; font-size: 1.04rem; }