/* ==========================================================================
   ITPE — Design tokens
   Apple-system type stack (literal ask), alternating ink/paper sections,
   and one signature motif used throughout: the "rail" — a glowing animated
   line/circuit standing in for a payment route. Each product gets its own
   rail color; the same visual language reappears as that product's
   "how it works" demo.
   ========================================================================== */
   :root {
    --ink: #0B0C10;
    --ink-soft: #17181D;
    --ink-softer: #202127;
    --paper: #FAFAFA;
    --paper-alt: #F2F3F5;
    --white: #FFFFFF;
  
    --text: #0B0C10;
    --text-soft: #6E6E76;
    --text-on-ink: #F5F5F7;
    --text-on-ink-soft: #9A9AA2;
  
    --line: #E5E5E7;
    --line-dark: #2A2B31;
  
    --signal: #0A5FFF;
    --signal-2: #38BDF8;
    --grad-signal: linear-gradient(120deg, #0A5FFF 0%, #38BDF8 100%);
  
    /* one color per product — the "rail" it runs on */
    --rail-collection: #0A5FFF;
    --rail-payout: #12B76A;
    --rail-gateway: #635BFF;
    --rail-link: #06AED4;
    --rail-api: #8B5CF6;
    --rail-whitelabel: #F2A93B;
  
    --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-soft: 0 30px 60px -25px rgba(11, 12, 16, 0.25);
    --shadow-tight: 0 10px 24px -12px rgba(11, 12, 16, 0.22);
    --container: 1200px;
  }
  
  /* ==========================================================================
     Reset + base
     ========================================================================== */
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--text);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  ul { margin: 0; padding: 0; list-style: none; }
  button { font-family: inherit; }
  
  h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.05;
    margin: 0;
  }
  p { margin: 0; line-height: 1.6; }
  
  :focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
  
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  }
  
  .container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }
  .section { padding: 120px 0; }
  .section-tight { padding: 72px 0; }
  .on-ink { background: var(--ink); color: var(--text-on-ink); }
  .on-ink .text-soft { color: var(--text-on-ink-soft); }
  .text-soft { color: var(--text-soft); }
  
  .eyebrow {
    display: inline-flex; align-items: center; gap: 9px;
    font-family: var(--font-mono); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--signal); margin-bottom: 20px;
  }
  .on-ink .eyebrow { color: var(--signal-2); }
  .eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 4px currentColor; opacity: 0.35; }
  
  .section-head { max-width: 660px; margin-bottom: 64px; }
  .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
  .section-head h2 { font-size: clamp(2rem, 3.6vw, 3rem); margin-bottom: 18px; }
  .section-head p { font-size: 1.12rem; color: var(--text-soft); }
  .on-ink .section-head p { color: var(--text-on-ink-soft); }
  
  /* ==========================================================================
     Buttons
     ========================================================================== */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 15px 30px; border-radius: 999px; font-weight: 600; font-size: 0.96rem;
    border: 1px solid transparent; cursor: pointer; transition: transform 0.25s cubic-bezier(.16,1,.3,1), box-shadow 0.25s ease, background 0.25s ease, opacity 0.25s ease;
    white-space: nowrap;
  }
  .btn-primary { background: var(--signal); color: #fff; box-shadow: 0 14px 30px -10px rgba(10, 95, 255, 0.55); }
  .btn-primary:hover { transform: translateY(-2px) scale(1.015); box-shadow: 0 18px 36px -10px rgba(10, 95, 255, 0.6); }
  .btn-ghost { background: transparent; border-color: var(--line); color: var(--text); }
  .btn-ghost:hover { border-color: var(--text); }
  .on-ink .btn-ghost { border-color: var(--line-dark); color: var(--text-on-ink); }
  .on-ink .btn-ghost:hover { border-color: var(--text-on-ink); }
  .btn-light { background: var(--white); color: var(--ink); }
  .btn-light:hover { transform: translateY(-2px); }
  .btn-sm { padding: 10px 20px; font-size: 0.86rem; }
  .btn-block { width: 100%; }
  
  /* ==========================================================================
     Navbar
     ========================================================================== */
  .nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 18px 0; transition: all 0.35s cubic-bezier(.16,1,.3,1);
    background: transparent;
  }
  .nav.is-scrolled {
    padding: 12px 0; background: rgba(11, 12, 16, 0.72);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-dark);
  }
  .nav-inner { display: flex; align-items: center; gap: 40px; }
  .nav-brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
  .nav-mark {
    width: 34px; height: 34px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
    background: var(--grad-signal); color: #fff; font-family: var(--font-mono); font-weight: 700; font-size: 13px; letter-spacing: -0.02em;
  }
  .nav-name { font-family: var(--font-display); font-weight: 800; font-size: 1.08rem; color: var(--text-on-ink); letter-spacing: -0.02em; }
  
  .nav-links { display: flex; align-items: center; gap: 30px; }
  .nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--text-on-ink-soft); position: relative; padding-bottom: 3px; transition: color 0.2s ease; }
  .nav-links a::after {
    content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1.5px; background: var(--signal-2);
    transition: right 0.3s cubic-bezier(.16,1,.3,1);
  }
  .nav-links a:hover { color: var(--text-on-ink); }
  .nav-links a:hover::after, .nav-links a.is-active::after { right: 0; }
  .nav-links a.is-active { color: var(--text-on-ink); }
  
  .nav-cta { display: flex; align-items: center; gap: 14px; }
  .nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 6px; cursor: pointer; }
  .nav-toggle span { width: 22px; height: 2px; background: var(--text-on-ink); border-radius: 2px; }
  
  @media (max-width: 920px) {
    .nav-links {
      position: fixed; top: 64px; left: 16px; right: 16px; background: var(--ink-soft);
      border: 1px solid var(--line-dark); border-radius: var(--radius-md);
      flex-direction: column; align-items: flex-start; padding: 20px; gap: 16px;
      display: none; box-shadow: var(--shadow-soft);
    }
    .nav-links.is-open { display: flex; }
    .nav-toggle { display: flex; }
    .nav-cta .btn-ghost { display: none; }
  }
  
  /* ==========================================================================
     Scroll reveal + entrance system
     ========================================================================== */
  [data-reveal] {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(.16,1,.3,1), transform 0.8s cubic-bezier(.16,1,.3,1);
  }
  [data-reveal].is-visible { opacity: 1; transform: none; }
  
  @keyframes fadeUp { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
  @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
  .load-in { animation: fadeUp 0.9s cubic-bezier(.16,1,.3,1) both; }
  .load-in-delay-1 { animation: fadeUp 0.9s cubic-bezier(.16,1,.3,1) 0.12s both; }
  .load-in-delay-2 { animation: fadeUp 0.9s cubic-bezier(.16,1,.3,1) 0.24s both; }
  .load-in-delay-3 { animation: fadeUp 0.9s cubic-bezier(.16,1,.3,1) 0.36s both; }
  
  /* Icon badges — perpetual float + hover punch, used across feature/product cards */
  @keyframes iconFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
  @keyframes iconPunch { 0% { transform: scale(1) rotate(0); } 30% { transform: scale(1.2) rotate(-8deg); } 60% { transform: scale(0.94) rotate(5deg); } 100% { transform: scale(1) rotate(0); } }
  .icon-badge {
    width: 50px; height: 50px; border-radius: 15px; display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0; animation: iconFloat 3.6s ease-in-out infinite;
  }
  .card:nth-child(3n+1) .icon-badge { animation-delay: 0s; }
  .card:nth-child(3n+2) .icon-badge { animation-delay: 0.4s; }
  .card:nth-child(3n) .icon-badge { animation-delay: 0.8s; }
  .card:hover .icon-badge { animation: iconPunch 0.6s ease; }
  
  /* ==========================================================================
     Cards
     ========================================================================== */
  .card {
    background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 32px; transition: transform 0.35s cubic-bezier(.16,1,.3,1), box-shadow 0.35s ease, border-color 0.35s ease;
  }
  .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-tight); border-color: transparent; }
  .on-ink .card { background: var(--ink-soft); border-color: var(--line-dark); }
  .card h3 { font-size: 1.15rem; margin-bottom: 10px; letter-spacing: -0.02em; }
  .card p { color: var(--text-soft); font-size: 0.95rem; }
  .on-ink .card p { color: var(--text-on-ink-soft); }
  .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
  @media (max-width: 900px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 620px) { .card-grid { grid-template-columns: 1fr; } }
  
  /* ==========================================================================
     Counters / stat strip
     ========================================================================== */
  .stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
  @media (max-width: 760px) { .stat-strip { grid-template-columns: repeat(2, 1fr); } }
  .stat { text-align: center; }
  .stat strong { display: block; font-family: var(--font-display); font-size: clamp(2rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -0.03em; }
  .stat span { font-size: 0.82rem; color: var(--text-on-ink-soft); text-transform: uppercase; letter-spacing: 0.05em; }
  
  /* ==========================================================================
     Footer
     ========================================================================== */
  .footer { background: var(--ink); color: var(--text-on-ink-soft); padding: 80px 0 32px; border-top: 1px solid var(--line-dark); }
  .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
  @media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
  .footer-brand p { max-width: 300px; margin-top: 14px; font-size: 0.92rem; }
  .footer-col h6 { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-on-ink-soft); margin-bottom: 18px; }
  .footer-col ul { display: flex; flex-direction: column; gap: 12px; font-size: 0.92rem; }
  .footer-col a { color: var(--text-on-ink); opacity: 0.75; transition: opacity 0.2s; }
  .footer-col a:hover { opacity: 1; }
  .footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 28px; border-top: 1px solid var(--line-dark); font-size: 0.82rem; }
  
  /* ==========================================================================
     THE RAIL — signature motif
     A glowing route connecting stations. Reused as: the product map on the
     homepage, and each product page's own "how it works" flow.
     ========================================================================== */
  .rail-map { position: relative; }
  .rail-track {
    position: relative; display: flex; justify-content: space-between; align-items: flex-start;
    padding: 0 10px;
  }
  .rail-track::before {
    content: ""; position: absolute; top: 27px; left: 5%; right: 5%; height: 2px;
    background: var(--line-dark);
  }
  .rail-track-progress {
    position: absolute; top: 27px; left: 5%; height: 2px; width: 0%;
    background: var(--grad-signal); box-shadow: 0 0 12px var(--signal-2);
    transition: width 1.2s cubic-bezier(.16,1,.3,1);
  }
  .rail-station { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 16px; width: 15%; text-align: center; cursor: pointer; }
  .rail-node {
    width: 56px; height: 56px; border-radius: 50%; background: var(--ink-soft); border: 2px solid var(--line-dark);
    display: flex; align-items: center; justify-content: center; font-size: 22px;
    transition: all 0.4s cubic-bezier(.16,1,.3,1);
  }
  .rail-station.is-active .rail-node { border-color: var(--rail-color, var(--signal)); background: var(--rail-color, var(--signal)); box-shadow: 0 0 0 8px color-mix(in srgb, var(--rail-color, var(--signal)) 18%, transparent); transform: scale(1.08); }
  .rail-station h4 { font-size: 0.88rem; color: var(--text-on-ink-soft); font-weight: 600; transition: color 0.3s ease; }
  .rail-station.is-active h4 { color: var(--text-on-ink); }
  .rail-station small { font-size: 0.72rem; color: var(--text-on-ink-soft); opacity: 0.7; display: block; }
  
  @media (max-width: 860px) {
    .rail-track { flex-direction: column; align-items: flex-start; gap: 36px; padding-left: 26px; }
    .rail-track::before { top: 5%; bottom: 5%; left: 27px; right: auto; width: 2px; height: auto; }
    .rail-track-progress { top: 5%; left: 27px; width: 2px; height: 0%; }
    .rail-station { flex-direction: row; width: 100%; text-align: left; }
  }
  
  /* Product-page flow demo — same rail language, horizontal, four steps */
  .flow-demo {
    background: var(--ink-soft); border: 1px solid var(--line-dark); border-radius: var(--radius-xl);
    padding: 56px 40px 48px; position: relative; overflow: hidden;
  }
  .flow-demo::before {
    content: ""; position: absolute; inset: 0; opacity: 0.5; pointer-events: none;
    background: radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--rail-color) 22%, transparent), transparent 55%);
  }
  .flow-steps { position: relative; z-index: 1; display: flex; justify-content: space-between; gap: 12px; }
  .flow-step { flex: 1; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 14px; opacity: 0.4; transition: opacity 0.5s ease; }
  .flow-step.is-active { opacity: 1; }
  .flow-step-icon {
    width: 64px; height: 64px; border-radius: 20px; display: flex; align-items: center; justify-content: center;
    font-size: 26px; background: var(--ink-softer); border: 1.5px solid var(--line-dark); transition: all 0.5s cubic-bezier(.16,1,.3,1);
  }
  .flow-step.is-active .flow-step-icon { border-color: var(--rail-color); background: color-mix(in srgb, var(--rail-color) 20%, var(--ink-softer)); box-shadow: 0 0 24px color-mix(in srgb, var(--rail-color) 45%, transparent); }
  .flow-step h5 { font-size: 0.92rem; color: var(--text-on-ink); margin: 0; }
  .flow-step p { font-size: 0.78rem; color: var(--text-on-ink-soft); }
  .flow-rail-line { position: relative; height: 2px; background: var(--line-dark); margin: -38px 32px 32px; z-index: 0; }
  .flow-rail-fill { position: absolute; top: 0; left: 0; height: 100%; width: 0%; background: var(--rail-color); transition: width 0.6s cubic-bezier(.16,1,.3,1); box-shadow: 0 0 10px var(--rail-color); }
  @media (max-width: 760px) {
    .flow-steps { flex-direction: column; }
    .flow-rail-line { display: none; }
  }
  
  /* ==========================================================================
     Hero slider (Bootstrap Carousel, restyled)
     ========================================================================== */
  .hero-slider { position: relative; background: var(--ink); overflow: hidden; }
  .hero-slide {
    min-height: 92vh; display: flex; align-items: center; position: relative;
    padding: 140px 0 80px;
  }
  .hero-slide-bg {
    position: absolute; inset: 0; z-index: 0;
    background: radial-gradient(circle at 78% 18%, color-mix(in srgb, var(--rail-color, var(--signal)) 30%, transparent), transparent 50%),
                radial-gradient(circle at 10% 90%, color-mix(in srgb, var(--rail-color, var(--signal)) 16%, transparent), transparent 45%);
    transition: background 0.8s ease;
  }
  .hero-slide-content { position: relative; z-index: 2; max-width: 680px; }
  .hero-slide-tag {
    display: inline-flex; align-items: center; gap: 10px; padding: 8px 18px; border-radius: 999px;
    background: rgba(255,255,255,0.06); border: 1px solid var(--line-dark); font-family: var(--font-mono);
    font-size: 0.76rem; color: var(--text-on-ink-soft); margin-bottom: 28px;
  }
  .hero-slide-tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--rail-color, var(--signal)); box-shadow: 0 0 10px var(--rail-color, var(--signal)); }
  .hero-slide h1 { font-size: clamp(2.6rem, 5.4vw, 4.4rem); color: var(--text-on-ink); margin-bottom: 22px; }
  .hero-slide h1 em { font-style: normal; color: var(--rail-color, var(--signal-2)); }
  .hero-slide .lead { font-size: 1.2rem; color: var(--text-on-ink-soft); margin-bottom: 40px; max-width: 540px; }
  .hero-slide-cta { display: flex; gap: 16px; flex-wrap: wrap; }
  
  .carousel-indicators-custom {
    position: absolute; bottom: 40px; left: 0; right: 0; z-index: 3;
    display: flex; justify-content: center; gap: 10px;
  }
  .carousel-indicators-custom button {
    width: 34px; height: 3px; border-radius: 2px; background: var(--line-dark); border: none; padding: 0; cursor: pointer;
    transition: background 0.3s ease;
  }
  .carousel-indicators-custom button.active { background: var(--rail-color, var(--signal-2)); }
  
  .carousel-nav-arrow {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 48px; height: 48px; border-radius: 50%; background: rgba(255,255,255,0.06);
    border: 1px solid var(--line-dark); color: var(--text-on-ink); display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 18px; transition: all 0.25s ease;
  }
  .carousel-nav-arrow:hover { background: rgba(255,255,255,0.14); }
  .carousel-nav-arrow.prev { left: 24px; }
  .carousel-nav-arrow.next { right: 24px; }
  @media (max-width: 760px) { .carousel-nav-arrow { display: none; } }
  
  /* ==========================================================================
     Terminal (API product)
     ========================================================================== */
  .terminal { background: #08090C; border: 1px solid var(--line-dark); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-soft); }
  .terminal-bar { display: flex; align-items: center; gap: 8px; padding: 14px 20px; border-bottom: 1px solid var(--line-dark); }
  .terminal-dot { width: 10px; height: 10px; border-radius: 50%; }
  .terminal-dot:nth-child(1) { background: #FF5F57; }
  .terminal-dot:nth-child(2) { background: #FEBC2E; }
  .terminal-dot:nth-child(3) { background: #28C840; }
  .terminal-label { margin-left: 8px; font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-on-ink-soft); }
  .terminal-body { padding: 26px 26px 34px; font-family: var(--font-mono); font-size: 0.86rem; line-height: 1.85; min-height: 260px; }
  .tk-key { color: #8B5CF6; }
  .tk-str { color: #86EFAC; }
  .tk-num { color: #38BDF8; }
  .tk-punc { color: var(--text-on-ink-soft); }
  .tk-comment { color: #5B5C64; }
  .term-cursor { display: inline-block; width: 7px; height: 15px; background: var(--signal-2); vertical-align: text-bottom; animation: blink 1s steps(1) infinite; }
  @keyframes blink { 50% { opacity: 0; } }
  
  /* ==========================================================================
     Whitelabel skin-cycler
     ========================================================================== */
  .skin-mock { background: var(--ink-soft); border: 1px solid var(--line-dark); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-soft); }
  .skin-mock-bar { display: flex; align-items: center; gap: 12px; padding: 18px 22px; border-bottom: 1px solid var(--line-dark); transition: all 0.6s ease; }
  .skin-logo { width: 30px; height: 30px; border-radius: 8px; transition: background 0.6s ease; }
  .skin-name { font-family: var(--font-display); font-weight: 800; letter-spacing: -0.02em; transition: color 0.6s ease; }
  .skin-mock-body { padding: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .skin-tile { border-radius: var(--radius-md); padding: 20px; background: var(--ink-softer); border: 1px solid var(--line-dark); }
  .skin-tile span { display: block; font-size: 0.72rem; color: var(--text-on-ink-soft); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
  .skin-tile strong { font-family: var(--font-mono); font-size: 1.3rem; transition: color 0.6s ease; }
  .skin-dots { display: flex; justify-content: center; gap: 8px; padding: 18px 0 22px; }
  .skin-dots button { width: 8px; height: 8px; border-radius: 50%; background: var(--line-dark); border: none; cursor: pointer; transition: all 0.3s ease; }
  .skin-dots button.active { width: 22px; border-radius: 4px; background: var(--rail-whitelabel); }
  
  /* ==========================================================================
     Checkout mock (Gateway product)
     ========================================================================== */
  .checkout-mock { background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); padding: 30px; max-width: 380px; margin: 0 auto; }
  .checkout-mock-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
  .checkout-amount { font-family: var(--font-display); font-size: 1.8rem; font-weight: 800; }
  .checkout-methods { display: flex; gap: 8px; margin-bottom: 20px; }
  .checkout-method { flex: 1; padding: 10px 6px; border-radius: 10px; border: 1.5px solid var(--line); text-align: center; font-size: 0.72rem; font-weight: 600; color: var(--text-soft); transition: all 0.4s ease; }
  .checkout-method.is-active { border-color: var(--rail-gateway); color: var(--rail-gateway); background: color-mix(in srgb, var(--rail-gateway) 8%, white); }
  .checkout-stage { border-radius: 12px; background: var(--paper-alt); padding: 20px; text-align: center; font-size: 0.86rem; color: var(--text-soft); min-height: 64px; display: flex; align-items: center; justify-content: center; gap: 10px; }
  .checkout-spinner { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--line); border-top-color: var(--rail-gateway); animation: spin 0.8s linear infinite; display: none; }
  .checkout-stage.is-loading .checkout-spinner { display: inline-block; }
  @keyframes spin { to { transform: rotate(360deg); } }
  .checkout-success { display: none; align-items: center; gap: 8px; color: #12B76A; font-weight: 700; }
  .checkout-stage.is-success .checkout-success { display: flex; }
  .checkout-stage.is-success .checkout-default, .checkout-stage.is-loading .checkout-default { display: none; }
  
  /* ==========================================================================
     Utility layout
     ========================================================================== */
  .split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
  @media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 40px; } }
  .pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
  .pill { padding: 8px 16px; border-radius: 999px; background: var(--ink-soft); border: 1px solid var(--line-dark); font-size: 0.82rem; color: var(--text-on-ink-soft); }
  .divider { height: 1px; background: var(--line); border: none; margin: 0; }
  .on-ink .divider { background: var(--line-dark); }