/* ==========================================================================
   BORDERLESS — CSS Design System & Layout Architecture
   B2B Stablecoin Payment Infrastructure
   ArchitectUX — April 2026
   ==========================================================================

   TABLE OF CONTENTS
   1.  Design Tokens (Custom Properties)
   2.  CSS Reset & Base
   3.  Typography System
   4.  Layout Utilities (Container, Grid, Flex)
   5.  Component: Navigation
   6.  Component: Hero
   7.  Component: Social Proof Bar
   8.  Component: Problem / Solution Split
   9.  Component: Feature Cards (Core Capabilities)
   10. Component: How It Works (3-Step Flow)
   11. Component: API Code Block
   12. Component: Corridor Cards / Table
   13. Component: Compliance Trust Section
   14. Component: CTA / Waitlist Form
   15. Component: Footer
   16. Utility Classes
   17. Premium Dark-Theme Effects
   18. Responsive Breakpoints
   ========================================================================== */


/* ==========================================================================
   1. DESIGN TOKENS
   ========================================================================== */

:root {

  /* --- Color: Backgrounds --- */
  --bg-base:          #0a0d14;   /* deepest navy — page background */
  --bg-surface:       #0f1420;   /* card / panel surfaces */
  --bg-surface-2:     #141929;   /* elevated surface (nav, modals) */
  --bg-surface-3:     #1a2035;   /* hover states, subtle separators */
  --bg-overlay:       rgba(10, 13, 20, 0.85);

  /* --- Color: Text --- */
  --text-primary:     #e8eaf0;   /* primary readable text */
  --text-secondary:   #8c93a8;   /* secondary / muted text */
  --text-tertiary:    #545d74;   /* placeholder, disabled */
  --text-inverse:     #0a0d14;   /* text on light surfaces */

  /* --- Color: Brand — Electric Teal (primary accent) --- */
  --teal-50:          #e6faf8;
  --teal-100:         #b3f0ea;
  --teal-200:         #66e0d5;
  --teal-300:         #1acec0;
  --teal-400:         #00bfb3;   /* primary CTA background */
  --teal-500:         #00a89d;   /* primary CTA hover */
  --teal-600:         #008f86;
  --teal-700:         #00706a;
  --teal-glow:        rgba(0, 191, 179, 0.18);
  --teal-glow-strong: rgba(0, 191, 179, 0.32);

  /* --- Color: Amber (compliance / trust callouts) --- */
  --amber-100:        #fef3c7;
  --amber-300:        #fcd34d;
  --amber-400:        #f59e0b;   /* compliance badges */
  --amber-500:        #d97706;
  --amber-glow:       rgba(245, 158, 11, 0.15);

  /* --- Color: Semantic --- */
  --color-success:    #22c55e;
  --color-error:      #ef4444;
  --color-warning:    #f59e0b;
  --color-info:       #3b82f6;

  /* --- Color: Borders --- */
  --border-subtle:    rgba(255, 255, 255, 0.05);
  --border-default:   rgba(255, 255, 255, 0.09);
  --border-strong:    rgba(255, 255, 255, 0.16);
  --border-teal:      rgba(0, 191, 179, 0.30);
  --border-amber:     rgba(245, 158, 11, 0.30);

  /* --- Typography: Font Stacks --- */
  --font-sans:        'Inter', 'Geist', system-ui, -apple-system, sans-serif;
  --font-mono:        'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* --- Typography: Scale (Major Third — 1.25 ratio) --- */
  --text-xs:          0.75rem;    /* 12px */
  --text-sm:          0.875rem;   /* 14px */
  --text-base:        1rem;       /* 16px */
  --text-lg:          1.125rem;   /* 18px */
  --text-xl:          1.25rem;    /* 20px */
  --text-2xl:         1.5rem;     /* 24px */
  --text-3xl:         1.875rem;   /* 30px */
  --text-4xl:         2.25rem;    /* 36px */
  --text-5xl:         3rem;       /* 48px */
  --text-6xl:         3.75rem;    /* 60px */
  --text-7xl:         4.5rem;     /* 72px */

  /* --- Typography: Weight --- */
  --font-regular:     400;
  --font-medium:      500;
  --font-semibold:    600;
  --font-bold:        700;
  --font-extrabold:   800;

  /* --- Typography: Line Height --- */
  --leading-tight:    1.15;
  --leading-snug:     1.35;
  --leading-normal:   1.5;
  --leading-relaxed:  1.65;
  --leading-loose:    1.8;

  /* --- Typography: Letter Spacing --- */
  --tracking-tight:   -0.04em;
  --tracking-snug:    -0.02em;
  --tracking-normal:   0em;
  --tracking-wide:     0.04em;
  --tracking-wider:    0.08em;
  --tracking-widest:   0.12em;

  /* --- Spacing Scale (4px base grid) --- */
  --space-0:    0;
  --space-px:   1px;
  --space-0-5:  0.125rem;   /* 2px  */
  --space-1:    0.25rem;    /* 4px  */
  --space-1-5:  0.375rem;   /* 6px  */
  --space-2:    0.5rem;     /* 8px  */
  --space-2-5:  0.625rem;   /* 10px */
  --space-3:    0.75rem;    /* 12px */
  --space-4:    1rem;       /* 16px */
  --space-5:    1.25rem;    /* 20px */
  --space-6:    1.5rem;     /* 24px */
  --space-7:    1.75rem;    /* 28px */
  --space-8:    2rem;       /* 32px */
  --space-10:   2.5rem;     /* 40px */
  --space-12:   3rem;       /* 48px */
  --space-14:   3.5rem;     /* 56px */
  --space-16:   4rem;       /* 64px */
  --space-20:   5rem;       /* 80px */
  --space-24:   6rem;       /* 96px */
  --space-28:   7rem;       /* 112px */
  --space-32:   8rem;       /* 128px */
  --space-40:   10rem;      /* 160px */

  /* --- Border Radius --- */
  --radius-none:   0;
  --radius-sm:     0.25rem;    /* 4px  */
  --radius-base:   0.375rem;   /* 6px  */
  --radius-md:     0.5rem;     /* 8px  */
  --radius-lg:     0.75rem;    /* 12px */
  --radius-xl:     1rem;       /* 16px */
  --radius-2xl:    1.25rem;    /* 20px */
  --radius-3xl:    1.5rem;     /* 24px */
  --radius-full:   9999px;

  /* --- Shadows --- */
  --shadow-sm:     0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-base:   0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md:     0 4px 16px rgba(0, 0, 0, 0.55);
  --shadow-lg:     0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-xl:     0 16px 48px rgba(0, 0, 0, 0.65);
  --shadow-teal:   0 0 24px rgba(0, 191, 179, 0.22), 0 0 8px rgba(0, 191, 179, 0.14);
  --shadow-teal-lg:0 0 48px rgba(0, 191, 179, 0.28), 0 0 16px rgba(0, 191, 179, 0.18);
  --shadow-amber:  0 0 24px rgba(245, 158, 11, 0.20), 0 0 8px rgba(245, 158, 11, 0.12);
  --shadow-inset:  inset 0 1px 0 rgba(255, 255, 255, 0.06);

  /* --- Z-Index Scale --- */
  --z-below:       -1;
  --z-base:         0;
  --z-raised:       10;
  --z-dropdown:     100;
  --z-sticky:       200;
  --z-overlay:      300;
  --z-modal:        400;
  --z-toast:        500;

  /* --- Transitions --- */
  --ease-default:  cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in:       cubic-bezier(0.4, 0, 1, 1);
  --ease-out:      cubic-bezier(0, 0, 0.2, 1);
  --ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 120ms;
  --duration-base: 200ms;
  --duration-slow: 350ms;

  /* --- Layout: Container Widths --- */
  --container-sm:   640px;
  --container-md:   768px;
  --container-lg:   1024px;
  --container-xl:   1280px;
  --container-2xl:  1440px;
  --container-gutter: var(--space-6);

  /* --- Noise texture data URI (very subtle grain) --- */
  --noise-opacity: 0.030;
}


/* ==========================================================================
   2. CSS RESET & BASE
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;

  /* Subtle global noise overlay using pseudo-element on html */
}

/* Noise texture overlay — applied via ::before on a wrapper */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-overlay);
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px 128px;
}

img,
video,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
  appearance: none;
}

button {
  cursor: pointer;
  line-height: 1;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

:focus-visible {
  outline: 2px solid var(--teal-400);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--teal-glow-strong);
  color: var(--teal-200);
}

/* Scrollbar styling (Chromium) */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-surface);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-surface-3);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}


/* ==========================================================================
   3. TYPOGRAPHY SYSTEM
   ========================================================================== */

/* Heading defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-snug);
  color: var(--text-primary);
}

/* Named semantic classes — used directly in markup */
.text-display {
  font-size: clamp(var(--text-4xl), 5vw, var(--text-7xl));
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.text-h1 {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-snug);
}

.text-h2 {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-snug);
}

.text-h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-normal);
}

.text-body-lg {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

.text-body {
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}

.text-body-sm {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.text-caption {
  font-size: var(--text-xs);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  font-weight: var(--font-medium);
}

.text-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  letter-spacing: var(--tracking-wide);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* Color helpers */
.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary  { color: var(--text-tertiary); }
.text-teal      { color: var(--teal-400); }
.text-amber     { color: var(--amber-400); }

/* Section label / eyebrow text */
.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--teal-400);
  margin-bottom: var(--space-4);
}


/* ==========================================================================
   4. LAYOUT UTILITIES
   ========================================================================== */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.container--sm  { max-width: var(--container-sm); }
.container--md  { max-width: var(--container-md); }
.container--lg  { max-width: var(--container-lg); }
.container--2xl { max-width: var(--container-2xl); }

/* Section vertical spacing */
.section {
  padding-block: var(--space-20);
}

.section--lg {
  padding-block: var(--space-32);
}

.section--sm {
  padding-block: var(--space-12);
}

/* Section header block — eyebrow + heading + subtext */
.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}

.section-header--left {
  text-align: left;
  margin-inline: 0;
}

.section-header p {
  margin-top: var(--space-4);
  color: var(--text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.grid-auto-fit-300 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-auto-fit-240 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Split layout (problem/solution, 2-col) */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* Flex helpers */
.flex           { display: flex; }
.flex-col       { display: flex; flex-direction: column; }
.items-center   { align-items: center; }
.items-start    { align-items: flex-start; }
.items-end      { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between{ justify-content: space-between; }
.justify-end    { justify-content: flex-end; }
.gap-2          { gap: var(--space-2); }
.gap-3          { gap: var(--space-3); }
.gap-4          { gap: var(--space-4); }
.gap-6          { gap: var(--space-6); }
.gap-8          { gap: var(--space-8); }

/* Divider */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border-default);
}


/* ==========================================================================
   5. COMPONENT: NAVIGATION
   ========================================================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  width: 100%;
  background: rgba(10, 13, 20, 0.80);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--duration-slow) var(--ease-default),
              background var(--duration-slow) var(--ease-default);
}

/* Scrolled state — JS adds this class */
.nav.nav--scrolled {
  background: rgba(10, 13, 20, 0.95);
  border-bottom-color: var(--border-default);
  box-shadow: var(--shadow-md);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding-inline: var(--container-gutter);
  max-width: var(--container-xl);
  margin-inline: auto;
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2-5);
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-mark {
  width: 28px;
  height: 28px;
  background: var(--teal-400);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-teal);
}

.nav__logo-text {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  letter-spacing: var(--tracking-snug);
}

/* Nav links (center) */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-default);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--teal-400);
  transition: width var(--duration-base) var(--ease-out);
}

.nav__link:hover {
  color: var(--text-primary);
}

.nav__link:hover::after {
  width: 100%;
}

/* Nav actions (right) */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}


/* ==========================================================================
   BUTTONS (shared across all sections)
   ========================================================================== */

/* Base button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2-5) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color var(--duration-base) var(--ease-default),
    border-color     var(--duration-base) var(--ease-default),
    color            var(--duration-base) var(--ease-default),
    box-shadow       var(--duration-base) var(--ease-default),
    transform        var(--duration-fast) var(--ease-default);
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

/* Primary — electric teal fill */
.btn--primary {
  background: var(--teal-400);
  color: var(--text-inverse);
  border-color: var(--teal-400);
}

.btn--primary:hover {
  background: var(--teal-500);
  border-color: var(--teal-500);
  box-shadow: var(--shadow-teal);
}

.btn--primary:focus-visible {
  outline: 2px solid var(--teal-300);
  outline-offset: 3px;
}

/* Secondary — ghost/outline */
.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn--secondary:hover {
  background: var(--bg-surface-3);
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.btn--secondary:focus-visible {
  outline: 2px solid var(--teal-400);
  outline-offset: 3px;
}

/* Ghost — text-link style */
.btn--ghost {
  background: transparent;
  color: var(--teal-400);
  border-color: transparent;
  padding-inline: var(--space-2);
}

.btn--ghost:hover {
  color: var(--teal-300);
  background: var(--teal-glow);
}

/* Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  border-radius: var(--radius-base);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn--xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  border-radius: var(--radius-lg);
}

/* Icon inside button */
.btn__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Arrow indicator */
.btn--arrow::after {
  content: '→';
  margin-left: var(--space-1);
  transition: transform var(--duration-base) var(--ease-spring);
  display: inline-block;
}

.btn--arrow:hover::after {
  transform: translateX(4px);
}


/* ==========================================================================
   6. COMPONENT: HERO
   ========================================================================== */

.hero {
  position: relative;
  padding-block: var(--space-32) var(--space-28);
  overflow: hidden;
  isolation: isolate;
}

/* Radial glow behind hero text */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(
    ellipse at 50% 0%,
    rgba(0, 191, 179, 0.12) 0%,
    rgba(0, 191, 179, 0.04) 40%,
    transparent 70%
  );
  pointer-events: none;
  z-index: var(--z-below);
}

/* Subtle grid lines background */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
  z-index: var(--z-below);
  mask-image: radial-gradient(ellipse at 50% 0%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, black 20%, transparent 75%);
}

.hero__inner {
  position: relative;
  z-index: var(--z-base);
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
  text-align: center;
}

/* Eyebrow badge */
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1-5) var(--space-3);
  background: var(--bg-surface);
  border: 1px solid var(--border-teal);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--teal-300);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-teal);
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal-400);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.8); }
}

/* Headline */
.hero__headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  max-width: 820px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

/* Highlighted span inside headline */
.hero__headline .highlight {
  color: var(--teal-400);
  position: relative;
}

.hero__headline .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal-400), var(--teal-300));
  border-radius: var(--radius-full);
  opacity: 0.6;
}

/* Subheadline */
.hero__sub {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

/* CTA group */
.hero__ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Social proof micro-line below CTAs */
.hero__trust {
  margin-top: var(--space-8);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.hero__trust-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-tertiary);
}


/* ==========================================================================
   7. COMPONENT: SOCIAL PROOF BAR
   ========================================================================== */

.proof-bar {
  padding-block: var(--space-10);
  border-block: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.proof-bar__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.proof-bar__label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-tertiary);
  text-align: center;
  margin-bottom: var(--space-6);
}

.proof-bar__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.proof-bar__tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  transition:
    border-color var(--duration-base) var(--ease-default),
    color        var(--duration-base) var(--ease-default),
    background   var(--duration-base) var(--ease-default);
}

.proof-bar__tag:hover {
  border-color: var(--border-teal);
  color: var(--text-primary);
  background: var(--bg-surface-3);
}


/* ==========================================================================
   8. COMPONENT: PROBLEM / SOLUTION SPLIT
   ========================================================================== */

.problem-solution {
  padding-block: var(--space-32);
}

.problem-solution__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

/* Two-column split panel */
.problem-solution__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

/* Shared panel */
.ps-panel {
  padding: var(--space-8) var(--space-8);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-default);
  height: 100%;
}

/* Problem panel — warmer, muted */
.ps-panel--problem {
  background: var(--bg-surface);
  position: relative;
  overflow: hidden;
}

.ps-panel--problem::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--bg-surface-3) 0%, rgba(255,255,255,0.04) 100%);
}

/* Solution panel — teal-accented */
.ps-panel--solution {
  background: var(--bg-surface);
  border-color: var(--border-teal);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-teal);
}

.ps-panel--solution::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal-400), var(--teal-200));
}

/* Panel header */
.ps-panel__label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.ps-panel--problem .ps-panel__label {
  color: var(--text-tertiary);
}

.ps-panel--solution .ps-panel__label {
  color: var(--teal-400);
}

.ps-panel__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-6);
  line-height: var(--leading-snug);
}

/* Problem list items */
.ps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.ps-list__item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.ps-list__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  margin-top: 2px;
}

.ps-panel--problem .ps-list__icon {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
}

.ps-panel--solution .ps-list__icon {
  background: var(--teal-glow);
  color: var(--teal-400);
}

.ps-list__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.ps-list__text strong {
  display: block;
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-0-5);
}


/* ==========================================================================
   9. COMPONENT: FEATURE CARDS (Core Capabilities)
   ========================================================================== */

.features {
  padding-block: var(--space-28);
  background: var(--bg-surface);
  border-block: 1px solid var(--border-subtle);
}

.features__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* Card */
.feature-card {
  padding: var(--space-8);
  background: var(--bg-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  position: relative;
  overflow: hidden;
  transition:
    border-color   var(--duration-slow) var(--ease-default),
    box-shadow     var(--duration-slow) var(--ease-default),
    transform      var(--duration-base) var(--ease-default);
}

/* Hover glow */
.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 0%,
    var(--teal-glow) 0%,
    transparent 65%
  );
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-default);
  pointer-events: none;
}

.feature-card:hover {
  border-color: var(--border-teal);
  box-shadow: var(--shadow-teal);
  transform: translateY(-2px);
}

.feature-card:hover::before {
  opacity: 1;
}

/* Card icon */
.feature-card__icon {
  width: 48px;
  height: 48px;
  background: var(--teal-glow);
  border: 1px solid var(--border-teal);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  color: var(--teal-400);
  transition: box-shadow var(--duration-slow) var(--ease-default);
}

.feature-card:hover .feature-card__icon {
  box-shadow: var(--shadow-teal);
}

.feature-card__icon svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
}

/* Card content */
.feature-card__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.feature-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

/* Card stat / highlight */
.feature-card__stat {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1-5) var(--space-3);
  background: var(--teal-glow);
  border: 1px solid var(--border-teal);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--teal-300);
}


/* ==========================================================================
   10. COMPONENT: HOW IT WORKS (3-Step Horizontal Flow)
   ========================================================================== */

.how-it-works {
  padding-block: var(--space-32);
}

.how-it-works__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  position: relative;
}

/* Connector line between steps */
.steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(16.6% + var(--space-6));
  right: calc(16.6% + var(--space-6));
  height: 1px;
  background: linear-gradient(90deg,
    var(--teal-400) 0%,
    var(--border-teal) 50%,
    var(--border-default) 100%
  );
  z-index: var(--z-below);
}

.step {
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: var(--z-base);
}

/* Step number badge */
.step__number {
  width: 56px;
  height: 56px;
  background: var(--bg-surface);
  border: 1px solid var(--border-teal);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--teal-400);
  font-family: var(--font-mono);
  margin-bottom: var(--space-6);
  flex-shrink: 0;
  box-shadow: var(--shadow-teal);
  position: relative;
}

/* Active / first step has filled circle */
.step:first-child .step__number {
  background: var(--teal-400);
  color: var(--text-inverse);
}

.step__content {
  padding: var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  flex: 1;
  transition:
    border-color var(--duration-slow) var(--ease-default),
    box-shadow   var(--duration-slow) var(--ease-default);
}

.step__content:hover {
  border-color: var(--border-teal);
  box-shadow: var(--shadow-teal);
}

.step__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.step__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.step__tag {
  display: inline-block;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--font-mono);
  color: var(--teal-400);
  font-family: var(--font-mono);
}


/* ==========================================================================
   10b. COMPONENT: VIDEO SECTION
   ========================================================================== */

.video-section {
  padding-block: var(--space-32);
  background: var(--bg-base);
}

.video-section__inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
}

.video-section__sub {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  max-width: 52ch;
  margin-block-end: var(--space-4);
}

.video-section__embed {
  width: 100%;
  max-width: 860px;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 0 0 1px rgba(0, 191, 179, 0.08), 0 24px 64px rgba(0, 0, 0, 0.5);
}

.video-section__embed iframe {
  width: 100%;
  height: 100%;
  display: block;
}

/* ==========================================================================
   11. COMPONENT: API CODE BLOCK
   ========================================================================== */

.api-preview {
  padding-block: var(--space-32);
  background: var(--bg-surface);
  border-block: 1px solid var(--border-subtle);
  overflow: hidden;
}

.api-preview__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.api-preview__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

/* Left: copy/description */
.api-preview__copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.api-preview__copy p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* API pills / attributes */
.api-attrs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.api-attr {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1-5);
  padding: var(--space-1-5) var(--space-3);
  background: var(--bg-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.api-attr__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}

/* Code block wrapper */
.code-block {
  position: relative;
  background: #080b10;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl), var(--shadow-teal);
}

/* Chrome-style top bar */
.code-block__bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border-subtle);
}

.code-block__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-block__dot--red    { background: #ff5f57; }
.code-block__dot--amber  { background: #febc2e; }
.code-block__dot--green  { background: #28c840; }

.code-block__title {
  margin-left: var(--space-2);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-tertiary);
}

/* HTTP method badge */
.code-block__method {
  margin-left: auto;
  padding: 2px var(--space-2);
  background: var(--teal-glow);
  border: 1px solid var(--border-teal);
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-family: var(--font-mono);
  font-weight: var(--font-bold);
  color: var(--teal-400);
  letter-spacing: var(--tracking-wide);
}

/* Actual code */
.code-block__body {
  padding: var(--space-6);
  overflow-x: auto;
}

.code-block__body pre {
  margin: 0;
}

.code-block__body code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  display: block;
}

/* Syntax coloring — applied via span classes */
.syn-key     { color: #7dd3fc; }   /* JSON keys — light blue */
.syn-str     { color: #86efac; }   /* Strings — green */
.syn-num     { color: #fca5a5; }   /* Numbers — coral */
.syn-bool    { color: #c084fc; }   /* Booleans — purple */
.syn-null    { color: var(--text-tertiary); }
.syn-punct   { color: var(--text-tertiary); }
.syn-comment { color: var(--text-tertiary); font-style: italic; }
.syn-method  { color: var(--teal-300); font-weight: var(--font-semibold); }
.syn-url     { color: #fb923c; }   /* URL path — orange */

/* Response section divider inside code block */
.code-block__divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-inline: var(--space-6);
  padding-block: var(--space-3);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(255,255,255,0.015);
}

.code-block__divider-label {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-tertiary);
}

.code-block__status {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1-5);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-success);
}

.code-block__status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}

/* Copy button */
.code-block__copy {
  position: absolute;
  top: var(--space-12);
  right: var(--space-4);
  padding: var(--space-1-5) var(--space-3);
  background: var(--bg-surface-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-secondary);
  cursor: pointer;
  transition:
    background var(--duration-base) var(--ease-default),
    color      var(--duration-base) var(--ease-default);
}

.code-block__copy:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.code-block__copy.copied {
  color: var(--color-success);
  border-color: rgba(34, 197, 94, 0.3);
}


/* ==========================================================================
   12. COMPONENT: CORRIDORS
   ========================================================================== */

.corridors {
  padding-block: var(--space-32);
}

.corridors__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

/* Table layout */
.corridor-table {
  width: 100%;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
}

/* Table header row */
.corridor-table__head {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 1fr 1.2fr;
  gap: 0;
  background: var(--bg-surface-2);
  border-bottom: 1px solid var(--border-default);
  padding: var(--space-3) var(--space-6);
}

.corridor-table__th {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-tertiary);
}

/* Table body */
.corridor-table__body {
  display: flex;
  flex-direction: column;
}

/* Row */
.corridor-row {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 1fr 1.2fr;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  transition:
    background var(--duration-fast) var(--ease-default);
}

.corridor-row:last-child {
  border-bottom: none;
}

.corridor-row:hover {
  background: var(--bg-surface-3);
}

/* Corridor name (with flag emoji handled in HTML) */
.corridor-row__route {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.corridor-route-text {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.corridor-route-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: 2px;
}

.corridor-row__volume,
.corridor-row__fx,
.corridor-row__settle,
.corridor-row__status {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.corridor-row__fx {
  color: var(--amber-400);
  font-weight: var(--font-medium);
}

/* Status badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1-5);
  padding: var(--space-1) var(--space-2-5);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
}

.status-badge--live {
  background: rgba(34, 197, 94, 0.12);
  color: var(--color-success);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.status-badge--live::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse-dot 2s ease-in-out infinite;
}

.status-badge--beta {
  background: rgba(245, 158, 11, 0.12);
  color: var(--amber-400);
  border: 1px solid var(--border-amber);
}

.status-badge--soon {
  background: var(--bg-surface-2);
  color: var(--text-tertiary);
  border: 1px solid var(--border-subtle);
}

/* Card layout variant (responsive fallback) */
.corridor-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}

.corridor-card {
  padding: var(--space-5);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  transition:
    border-color var(--duration-slow) var(--ease-default),
    box-shadow   var(--duration-slow) var(--ease-default);
}

.corridor-card:hover {
  border-color: var(--border-teal);
  box-shadow: var(--shadow-teal);
}

.corridor-card__route {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.corridor-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-4);
}

.corridor-card__fx {
  font-size: var(--text-sm);
  color: var(--amber-400);
  font-weight: var(--font-medium);
}


/* ==========================================================================
   13. COMPONENT: COMPLIANCE TRUST SECTION
   ========================================================================== */

.compliance {
  padding-block: var(--space-28);
  background: var(--bg-surface);
  border-block: 1px solid var(--border-subtle);
}

.compliance__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.compliance__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-12);
}

/* Single compliance badge card */
.compliance-badge {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--bg-base);
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition:
    box-shadow  var(--duration-slow) var(--ease-default),
    transform   var(--duration-base) var(--ease-default);
}

.compliance-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--amber-400), var(--amber-300));
}

.compliance-badge:hover {
  box-shadow: var(--shadow-amber);
  transform: translateY(-2px);
}

/* Icon */
.compliance-badge__icon {
  width: 40px;
  height: 40px;
  background: var(--amber-glow);
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber-400);
  flex-shrink: 0;
}

.compliance-badge__icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
}

.compliance-badge__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

.compliance-badge__desc {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* "In progress" variant */
.compliance-badge--pending {
  border-color: var(--border-default);
  opacity: 0.7;
}

.compliance-badge--pending::before {
  background: linear-gradient(90deg, var(--border-default) 0%, transparent 100%);
}

.compliance-badge--pending .compliance-badge__icon {
  background: var(--bg-surface-2);
  border-color: var(--border-default);
  color: var(--text-tertiary);
}

.compliance-badge--pending .compliance-badge__title::after {
  content: ' (in progress)';
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  font-weight: var(--font-regular);
}

/* Trust statement block */
.trust-statement {
  margin-top: var(--space-12);
  padding: var(--space-6) var(--space-8);
  background: var(--bg-base);
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  gap: var(--space-6);
  box-shadow: var(--shadow-amber);
}

.trust-statement__icon {
  width: 48px;
  height: 48px;
  background: var(--amber-glow);
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber-400);
  flex-shrink: 0;
}

.trust-statement__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.trust-statement__text strong {
  display: block;
  color: var(--text-primary);
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}


/* ==========================================================================
   14. COMPONENT: CTA / WAITLIST FORM
   ========================================================================== */

.cta-section {
  padding-block: var(--space-32);
  background: var(--bg-base);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* Background radial glow */
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 50% 100%,
    rgba(0, 191, 179, 0.10) 0%,
    rgba(0, 191, 179, 0.03) 50%,
    transparent 75%
  );
  pointer-events: none;
  z-index: var(--z-below);
}

.cta-section__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
  text-align: center;
}

.cta-section__headline {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--font-extrabold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.cta-section__sub {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: var(--leading-relaxed);
}

/* Waitlist form */
.waitlist-form {
  display: flex;
  gap: var(--space-3);
  max-width: 480px;
  margin-inline: auto;
  flex-wrap: wrap;
}

.waitlist-form__input {
  flex: 1;
  min-width: 240px;
  padding: var(--space-3-5, 0.875rem) var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-primary);
  transition:
    border-color var(--duration-base) var(--ease-default),
    box-shadow   var(--duration-base) var(--ease-default);
}

.waitlist-form__input::placeholder {
  color: var(--text-tertiary);
}

.waitlist-form__input:hover {
  border-color: var(--border-strong);
}

.waitlist-form__input:focus {
  border-color: var(--teal-400);
  box-shadow: 0 0 0 3px var(--teal-glow);
  outline: none;
}

.waitlist-form__input:focus::placeholder {
  color: var(--text-secondary);
}

.waitlist-form__submit {
  flex-shrink: 0;
  padding: var(--space-3-5, 0.875rem) var(--space-6);
  background: var(--teal-400);
  color: var(--text-inverse);
  border: 1px solid var(--teal-400);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background var(--duration-base) var(--ease-default),
    box-shadow  var(--duration-base) var(--ease-default),
    transform   var(--duration-fast) var(--ease-default);
}

.waitlist-form__submit:hover {
  background: var(--teal-500);
  box-shadow: var(--shadow-teal);
}

.waitlist-form__submit:active {
  transform: translateY(1px);
}

.waitlist-form__submit:focus-visible {
  outline: 2px solid var(--teal-300);
  outline-offset: 3px;
}

/* Form consent line */
.waitlist-form__consent {
  width: 100%;
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-align: center;
  line-height: var(--leading-relaxed);
}

.waitlist-form__consent a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.waitlist-form__consent a:hover {
  color: var(--text-primary);
}

/* Success state */
.waitlist-form__success {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-success);
  max-width: 480px;
  margin-inline: auto;
}

.waitlist-form.submitted .waitlist-form__success {
  display: flex;
}

.waitlist-form.submitted .waitlist-form__input,
.waitlist-form.submitted .waitlist-form__submit {
  display: none;
}

/* Additional note below form */
.cta-section__note {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.cta-section__note-item {
  display: flex;
  align-items: center;
  gap: var(--space-1-5);
}


/* ==========================================================================
   15. COMPONENT: FOOTER
   ========================================================================== */

.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-default);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}

.footer__inner {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--border-subtle);
}

/* Brand column */
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  line-height: var(--leading-relaxed);
  max-width: 280px;
}

/* Footer link columns */
.footer__col-title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-default);
}

.footer__link:hover {
  color: var(--text-primary);
}

/* Bottom bar */
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-8);
}

.footer__legal {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  line-height: var(--leading-relaxed);
  max-width: 600px;
}

.footer__legal a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer__legal a:hover {
  color: var(--text-primary);
}

.footer__legal-links {
  display: flex;
  gap: var(--space-4);
  flex-shrink: 0;
}

.footer__legal-link {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-default);
}

.footer__legal-link:hover {
  color: var(--text-secondary);
}


/* ==========================================================================
   16. UTILITY CLASSES
   ========================================================================== */

/* Display */
.hidden  { display: none !important; }
.visible { visibility: visible; }

/* Spacing */
.mt-0  { margin-top: 0; }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-0  { margin-bottom: 0; }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

/* Text alignment */
.text-left   { text-align: left; }
.text-center { text-align: center; }
.text-right  { text-align: right; }

/* Width utilities */
.w-full { width: 100%; }
.max-w-prose { max-width: 65ch; }

/* SR-only (accessibility) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Truncate */
.truncate {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}


/* ==========================================================================
   17. PREMIUM DARK-THEME EFFECTS
   ========================================================================== */

/* --- Glow text effect (for hero headline accent) --- */
.glow-text {
  text-shadow:
    0 0 40px rgba(0, 191, 179, 0.35),
    0 0 80px rgba(0, 191, 179, 0.15);
}

/* --- Glow border on interactive cards --- */
.glow-border {
  box-shadow: var(--shadow-teal);
  border-color: var(--border-teal);
}

/* --- Subtle inner shine on card tops (light streak effect) --- */
.card-shine {
  position: relative;
  overflow: hidden;
}

.card-shine::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.12) 50%,
    transparent 100%
  );
  pointer-events: none;
}

/* --- Gradient separator (section divider) --- */
.gradient-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--border-teal) 30%,
    var(--border-teal) 70%,
    transparent 100%
  );
  opacity: 0.5;
}

/* --- Scanline texture on code blocks (optional) --- */
.scanlines {
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

/* --- Teal ambient glow (applied to key sections) --- */
.ambient-glow {
  position: relative;
}

.ambient-glow::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 200px;
  background: radial-gradient(
    ellipse,
    rgba(0, 191, 179, 0.08) 0%,
    transparent 70%
  );
  pointer-events: none;
  z-index: var(--z-below);
}

/* --- Surface gloss: subtle top-edge highlight on elevated panels --- */
.surface-gloss {
  box-shadow:
    var(--shadow-inset),
    var(--shadow-md);
}

/* --- Animated underline for links (teal) --- */
.link-teal {
  color: var(--teal-400);
  text-decoration: none;
  background-image: linear-gradient(var(--teal-400), var(--teal-400));
  background-size: 0 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--duration-base) var(--ease-out);
}

.link-teal:hover {
  background-size: 100% 1px;
}

/* --- Pulsing live indicator --- */
.live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
  animation: live-pulse 2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* --- Skeleton loading state (for dynamic content) --- */
@keyframes skeleton-shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-surface-2) 25%,
    var(--bg-surface-3) 50%,
    var(--bg-surface-2) 75%
  );
  background-size: 800px 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-base);
}

/* --- Focus ring override for interactive list items --- */
.interactive-row:focus-within {
  outline: none;
  background: var(--bg-surface-3);
}


/* ==========================================================================
   18. RESPONSIVE BREAKPOINTS (mobile-first)
   ========================================================================== */

/* sm: 640px */
@media (max-width: 639px) {

  /* Container gutter tighter on very small screens */
  :root {
    --container-gutter: var(--space-4);
  }

  /* Navigation: hide links on mobile */
  .nav__links {
    display: none;
  }

  .nav__inner {
    height: 56px;
  }

  /* Hero: reduce padding */
  .hero {
    padding-block: var(--space-20) var(--space-16);
  }

  .hero__ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__ctas .btn {
    width: 100%;
    justify-content: center;
  }

  /* Proof bar: wrap tags */
  .proof-bar__list {
    gap: var(--space-2);
  }

  /* Problem/Solution: stack */
  .problem-solution__grid {
    grid-template-columns: 1fr;
  }

  /* Features: single column */
  .features__grid {
    grid-template-columns: 1fr;
  }

  /* Steps: single column */
  .steps {
    grid-template-columns: 1fr;
  }

  .steps::before {
    display: none;
  }

  /* API preview: stack */
  .api-preview__layout {
    grid-template-columns: 1fr;
  }

  /* Corridor table: switch to cards */
  .corridor-table {
    display: none;
  }

  .corridor-cards {
    display: grid;
  }

  /* Compliance: 1 column */
  .compliance__grid {
    grid-template-columns: 1fr;
  }

  .trust-statement {
    flex-direction: column;
    text-align: center;
  }

  /* Waitlist form: stack */
  .waitlist-form {
    flex-direction: column;
  }

  .waitlist-form__input {
    min-width: 0;
    width: 100%;
  }

  .waitlist-form__submit {
    width: 100%;
  }

  /* Footer: single column */
  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Corridor cards show on mobile */
  .corridor-cards {
    grid-template-columns: 1fr;
  }

  /* Split layout */
  .split {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  /* Section padding reduction */
  .section { padding-block: var(--space-16); }
  .section--lg { padding-block: var(--space-20); }
  .how-it-works { padding-block: var(--space-20); }
  .api-preview  { padding-block: var(--space-20); }
  .corridors    { padding-block: var(--space-20); }
  .compliance   { padding-block: var(--space-16); }
  .cta-section  { padding-block: var(--space-20); }
  .problem-solution { padding-block: var(--space-20); }
}

/* md: 640px–1023px (tablet range) */
@media (min-width: 640px) and (max-width: 1023px) {

  :root {
    --container-gutter: var(--space-6);
  }

  /* Features: 2 columns on tablet */
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Problem/Solution: stays 2-col but tighter gap */
  .problem-solution__grid {
    gap: var(--space-6);
  }

  /* Steps: stays 3-col, number shrinks */
  .steps::before {
    top: 24px;
    left: 12%;
    right: 12%;
  }

  /* Footer: 2+2 columns */
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  /* Corridor table: hidden, cards shown */
  .corridor-table {
    display: none;
  }

  .corridor-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hero CTAs: row */
  .hero__ctas {
    flex-wrap: wrap;
    justify-content: center;
  }

  /* API preview: stack on tablet */
  .api-preview__layout {
    grid-template-columns: 1fr;
  }
}

/* lg: 1024px+ (desktop) */
@media (min-width: 1024px) {

  /* Features: 3 columns */
  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Corridor table visible on desktop */
  .corridor-table {
    display: block;
  }

  .corridor-cards {
    display: none;
  }

  /* API preview: side-by-side */
  .api-preview__layout {
    grid-template-columns: 1fr 1fr;
  }

  /* Footer: full 4-column */
  .footer__top {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

/* xl: 1280px+ (large desktop) */
@media (min-width: 1280px) {

  /* Slightly tighter letter spacing on display text at large sizes */
  .hero__headline {
    letter-spacing: -0.045em;
  }

  .text-display {
    letter-spacing: -0.048em;
  }

  /* Step connector re-positioned for wider grid */
  .steps::before {
    left: calc(16.6% + 2rem);
    right: calc(16.6% + 2rem);
  }
}

/* Reduced motion */
@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;
  }

  .hero__badge-dot {
    animation: none;
  }

  .live-dot {
    animation: none;
  }

  .status-badge--live::before {
    animation: none;
  }
}

/* High contrast mode override */
@media (forced-colors: active) {

  .btn--primary {
    background: ButtonText;
    color: ButtonFace;
    border-color: ButtonText;
  }

  .nav {
    border-bottom-color: ButtonText;
  }

  .feature-card,
  .ps-panel,
  .compliance-badge,
  .corridor-card {
    border-color: ButtonText;
  }
}