/* ==========================================================================
   ZolnaPay — Microsoft Fluent 2 Component Library & Layout System
   Implements exact Fluent 2 guidelines, elevation, cards, and controls
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. Global Reset & Base Typography
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-base);
  color: var(--color-neutral-fg-1);
  background-color: var(--color-neutral-bg-1);
  line-height: var(--line-height-body2);
  font-size: var(--font-size-body2);
  transition: background-color var(--duration-normal) var(--curve-standard),
              color var(--duration-normal) var(--curve-standard);
  overflow-x: hidden;
  position: relative;
}

/* Reduced Motion preference */
@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;
  }
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--curve-standard);
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

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

:focus-visible {
  outline: 2px solid var(--color-brand-bg);
  outline-offset: 2px;
}

/* Common Layout Wrapper */
.f-wrap {
  width: 100%;
  max-width: var(--max-content-width);
  margin-inline: auto;
  padding-inline: var(--spacing-xl);
}

.f-section {
  padding-block: var(--spacing-6xl);
  position: relative;
}

.f-section--alt {
  background-color: var(--color-neutral-bg-2);
  border-block: 1px solid var(--color-neutral-stroke-2);
}

.f-section--subtle {
  background-color: var(--color-surface-subtle);
}

/* Section Header Typography */
.f-section-header {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--spacing-5xl);
}

.f-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 4px var(--spacing-m);
  border-radius: var(--radius-s);
  font-size: var(--font-size-caption1);
  font-weight: 600;
  line-height: var(--line-height-caption1);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-m);
  background-color: var(--color-brand-bg-subtle);
  color: var(--color-brand-fg);
  border: 1px solid var(--color-brand-stroke-subtle);
}

.f-badge--neutral {
  background-color: var(--color-neutral-bg-4);
  color: var(--color-neutral-fg-2);
  border-color: var(--color-neutral-stroke-1);
}

.f-badge--success {
  background-color: var(--color-success-bg);
  color: var(--color-success-fg);
  border-color: var(--color-success-stroke);
}

.f-badge--warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning-fg);
  border-color: var(--color-warning-stroke);
}

.f-section-title {
  font-family: var(--font-display);
  font-size: var(--font-size-title1);
  line-height: var(--line-height-title1);
  font-weight: 700;
  color: var(--color-neutral-fg-1);
  margin-bottom: var(--spacing-m);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .f-section-title {
    font-size: var(--font-size-large-title);
    line-height: var(--line-height-large-title);
  }
}

.f-section-desc {
  font-size: var(--font-size-body2);
  line-height: var(--line-height-body2);
  color: var(--color-neutral-fg-3);
}

/* --------------------------------------------------------------------------
   1. Fluent 2 Buttons
   -------------------------------------------------------------------------- */
.f-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-s);
  min-height: 36px;
  padding: 0 var(--spacing-l);
  border-radius: var(--radius-m);
  font-size: var(--font-size-body1);
  font-weight: 600;
  line-height: var(--line-height-body1);
  white-space: nowrap;
  transition: all var(--duration-fast) var(--curve-standard);
  cursor: pointer;
  user-select: none;
}

.f-btn--primary {
  background-color: var(--color-brand-bg);
  color: var(--color-brand-fg-on-brand);
  border: 1px solid var(--color-brand-bg);
  box-shadow: var(--shadow-2);
}

.f-btn--primary:hover {
  background-color: var(--color-brand-bg-hover);
  border-color: var(--color-brand-bg-hover);
  box-shadow: var(--shadow-4);
  color: #ffffff;
}

.f-btn--primary:active {
  background-color: var(--color-brand-bg-pressed);
  box-shadow: none;
}

.f-btn--secondary {
  background-color: var(--color-neutral-bg-1);
  color: var(--color-neutral-fg-1);
  border: 1px solid var(--color-neutral-stroke-1);
  box-shadow: var(--shadow-2);
}

.f-btn--secondary:hover {
  background-color: var(--color-neutral-bg-card-hover);
  border-color: var(--color-neutral-stroke-1-hover);
  box-shadow: var(--shadow-4);
}

.f-btn--secondary:active {
  background-color: var(--color-neutral-bg-3);
  box-shadow: none;
}

.f-btn--subtle {
  background-color: transparent;
  color: var(--color-neutral-fg-1);
  border: 1px solid transparent;
}

.f-btn--subtle:hover {
  background-color: var(--color-neutral-bg-subtle-hover);
}

.f-btn--subtle:active {
  background-color: var(--color-neutral-bg-subtle-pressed);
}

.f-btn--sm {
  min-height: 30px;
  padding: 0 var(--spacing-m);
  font-size: var(--font-size-caption1);
  border-radius: var(--radius-m);
}

.f-btn--icon-only {
  padding: var(--spacing-s);
  min-width: 36px;
  min-height: 36px;
  border-radius: var(--radius-m);
  color: var(--color-neutral-fg-2);
}

.f-btn--icon-only:hover {
  background-color: var(--color-neutral-bg-subtle-hover);
  color: var(--color-neutral-fg-1);
}

/* --------------------------------------------------------------------------
   2. Fluent 2 Cards & Surfaces
   -------------------------------------------------------------------------- */
.f-card {
  background-color: var(--color-neutral-bg-card);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-l);
  padding: var(--spacing-xxl);
  box-shadow: var(--shadow-2);
  transition: transform var(--duration-fast) var(--curve-standard),
              box-shadow var(--duration-fast) var(--curve-standard),
              border-color var(--duration-fast) var(--curve-standard);
}

.f-card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-8);
  border-color: var(--color-neutral-stroke-1-hover);
}

.f-card--elevated {
  box-shadow: var(--shadow-4);
}

/* --------------------------------------------------------------------------
   3. Navigation Header (Fluent Acrylic Surface)
   -------------------------------------------------------------------------- */
.f-nav-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-surface-acrylic);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-neutral-stroke-subtle);
  transition: all var(--duration-normal) var(--curve-standard);
}

.f-nav-header.is-scrolled {
  border-bottom-color: var(--color-neutral-stroke-1);
  box-shadow: var(--shadow-4);
}

.f-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.f-brand-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-brand-fg);
  letter-spacing: -0.02em;
}

.f-brand-wordmark {
  display: block;
  width: 132px;
  height: auto;
  flex: none;
}

.f-brand-logo span {
  color: var(--color-neutral-fg-1);
}

.f-brand-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-s);
  background-color: var(--color-brand-bg-subtle);
  color: var(--color-brand-fg);
  border: 1px solid var(--color-brand-stroke-subtle);
}

.f-nav-menu {
  display: none;
  align-items: center;
  gap: var(--spacing-xs);
}

@media (min-width: 900px) {
  .f-nav-menu {
    display: flex;
  }
}

.f-nav-item {
  display: inline-flex;
  align-items: center;
  padding: 6px var(--spacing-m);
  font-size: var(--font-size-body1);
  font-weight: 500;
  color: var(--color-neutral-fg-2);
  border-radius: var(--radius-m);
  transition: all var(--duration-fast) var(--curve-standard);
}

.f-nav-item:hover {
  color: var(--color-neutral-fg-1);
  background-color: var(--color-neutral-bg-subtle-hover);
}

.f-nav-item.is-active {
  color: var(--color-brand-fg);
  font-weight: 600;
  background-color: var(--color-brand-bg-subtle);
}

.f-nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
}

/* --------------------------------------------------------------------------
   4. Fluent Mobile Drawer
   -------------------------------------------------------------------------- */
.f-drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1050;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--curve-standard);
}

.f-drawer-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.f-drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  inset-inline-end: 0;
  width: min(320px, 85vw);
  background-color: var(--color-neutral-bg-1);
  box-shadow: var(--shadow-28);
  z-index: 1060;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--duration-gentle) var(--curve-decelerate);
  padding: var(--spacing-xxl);
}

[dir="rtl"] .f-drawer {
  transform: translateX(-100%);
}

.f-drawer.is-open {
  transform: translateX(0) !important;
}

.f-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xxl);
  padding-bottom: var(--spacing-l);
  border-bottom: 1px solid var(--color-neutral-stroke-1);
}

.f-drawer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-s);
  flex: 1;
  overflow-y: auto;
}

.f-drawer-link {
  padding: var(--spacing-m) var(--spacing-l);
  border-radius: var(--radius-m);
  font-size: var(--font-size-subtitle2);
  font-weight: 500;
  color: var(--color-neutral-fg-1);
  display: flex;
  align-items: center;
  gap: var(--spacing-m);
}

.f-drawer-link:hover {
  background-color: var(--color-neutral-bg-subtle-hover);
}

.f-drawer-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-m);
  padding-top: var(--spacing-l);
  border-top: 1px solid var(--color-neutral-stroke-1);
}

/* --------------------------------------------------------------------------
   5. Hero Section (Fluent 2 Two-Column FinTech Layout)
   -------------------------------------------------------------------------- */
.f-hero {
  padding-top: var(--spacing-6xl);
  padding-bottom: var(--spacing-7xl);
  overflow: hidden;
  background: radial-gradient(circle at 50% 0%, var(--color-surface-mica) 0%, var(--color-neutral-bg-1) 70%);
}

.f-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-5xl);
  align-items: center;
}

@media (min-width: 992px) {
  .f-hero-grid {
    grid-template-columns: 1.15fr 0.95fr;
  }
}

.f-hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.f-hero-badge-wrap {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
  margin-bottom: var(--spacing-l);
}

.f-hero-title {
  font-family: var(--font-display);
  font-size: 36px;
  line-height: 44px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-neutral-fg-1);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
  .f-hero-title {
    font-size: var(--font-size-display);
    line-height: var(--line-height-display);
  }
}

.f-hero-title .f-brand-accent {
  color: var(--color-brand-fg);
}

.f-hero-title .f-muted-accent {
  color: var(--color-neutral-fg-3);
  font-weight: 600;
}

.f-hero-lede {
  font-size: var(--font-size-subtitle1);
  line-height: var(--line-height-subtitle1);
  color: var(--color-neutral-fg-3);
  margin-bottom: var(--spacing-xxxl);
  max-width: 580px;
}

.f-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-l);
  margin-bottom: var(--spacing-4xl);
}

.f-hero-telemetry {
  display: flex;
  align-items: center;
  gap: var(--spacing-l);
  flex-wrap: wrap;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-neutral-stroke-subtle);
  width: 100%;
}

.f-telemetry-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
  font-size: var(--font-size-body1);
  color: var(--color-neutral-fg-2);
}

.f-telemetry-item svg {
  color: var(--color-brand-fg);
  flex-shrink: 0;
}

.f-telemetry-sep {
  color: var(--color-neutral-stroke-1);
}

/* --------------------------------------------------------------------------
   6. Hero Product Simulation Card (Fluent FinTech Session)
   -------------------------------------------------------------------------- */
.f-session-card {
  background-color: var(--color-neutral-bg-card);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-16);
  overflow: hidden;
  position: relative;
}

.f-session-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-m) var(--spacing-xl);
  background-color: var(--color-neutral-bg-3);
  border-bottom: 1px solid var(--color-neutral-stroke-1);
}

.f-window-dots {
  display: flex;
  gap: 6px;
}

.f-window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-neutral-stroke-1);
}

.f-session-id {
  font-family: var(--font-mono);
  font-size: var(--font-size-caption1);
  color: var(--color-neutral-fg-3);
  font-weight: 600;
}

.f-session-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: var(--radius-circle);
  background-color: var(--color-success-bg);
  color: var(--color-success-fg);
  font-size: var(--font-size-caption2);
  font-weight: 700;
}

.f-status-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
  animation: f-pulse 2s infinite;
}

@keyframes f-pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.f-session-card-body {
  padding: var(--spacing-xxl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.f-session-panel {
  background-color: var(--color-surface-mica);
  border: 1px solid var(--color-neutral-stroke-2);
  border-radius: var(--radius-l);
  padding: var(--spacing-xl);
}

.f-session-preview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(170px, 0.85fr);
  align-items: center;
  gap: var(--spacing-xl);
}

.f-virtual-card {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 100%;
  max-width: 360px;
  aspect-ratio: 85 / 54;
  overflow: hidden;
  border: 1px solid rgba(15, 56, 94, 0.18);
  border-radius: 14px;
  color: #fff;
  background: var(--brand-70);
  box-shadow: 0 12px 24px rgba(16, 45, 80, 0.2);
  transform: perspective(900px) rotateX(3deg) rotateY(-5deg);
  transform-style: preserve-3d;
  transition: transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 420ms ease;
  animation: f-card-enter 650ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.f-virtual-card::before {
  position: absolute;
  z-index: 2;
  inset: 0;
  content: '';
  background: linear-gradient(112deg, transparent 28%, rgba(255, 255, 255, 0.12) 46%, transparent 62%);
  transform: translateX(-115%);
}

.f-virtual-card-art {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.f-virtual-card:hover {
  transform: perspective(900px) translateY(-3px) rotateX(1deg) rotateY(-2deg);
  box-shadow: 0 18px 30px rgba(16, 45, 80, 0.25);
}

.f-virtual-card.is-tapping {
  animation: f-card-tap 900ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.f-virtual-card.is-tapping::before {
  animation: f-card-sheen 900ms ease-out both;
}

.f-virtual-card.is-authorized {
  box-shadow: 0 0 0 2px rgba(16, 124, 65, 0.28), 0 16px 30px rgba(16, 45, 80, 0.24);
}

@keyframes f-card-enter {
  from { opacity: 0; transform: perspective(900px) translateY(12px) rotateX(7deg) rotateY(-8deg); }
  to { opacity: 1; transform: perspective(900px) rotateX(3deg) rotateY(-5deg); }
}

@keyframes f-card-tap {
  0% { transform: perspective(900px) rotateX(3deg) rotateY(-5deg); }
  42% { transform: perspective(900px) translateY(-6px) rotateX(1deg) rotateY(2deg); }
  72% { transform: perspective(900px) translateY(2px) rotateX(4deg) rotateY(-2deg); }
  100% { transform: perspective(900px) rotateX(3deg) rotateY(-5deg); }
}

@keyframes f-card-sheen {
  to { transform: translateX(115%); }
}

.f-session-payment-summary {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-l);
  min-width: 0;
}

.f-session-payment-summary .f-session-amount-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-s);
  padding: 0;
}

.f-session-payment-summary .f-amount-val {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.f-card-payment-state {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-neutral-fg-3);
  font-size: var(--font-size-caption1);
}

.f-card-state-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background-color: var(--color-brand-fg);
}

.f-card-payment-state.is-authorized {
  color: var(--color-success-fg);
}

.f-card-payment-state.is-authorized .f-card-state-dot {
  background-color: var(--color-success-fg);
}

.f-session-endpoint-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-m);
}

.f-endpoint-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-s);
  background-color: var(--color-neutral-bg-4);
  color: var(--color-neutral-fg-2);
}

.f-session-amount-box {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-block: var(--spacing-s);
}

.f-amount-val {
  font-size: var(--font-size-title1);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-neutral-fg-1);
}

.f-currency-pills {
  display: flex;
  gap: 4px;
}

.f-currency-pill {
  padding: 3px 8px;
  border-radius: var(--radius-s);
  font-size: var(--font-size-caption2);
  font-weight: 700;
  background-color: var(--color-neutral-bg-3);
  color: var(--color-neutral-fg-3);
  cursor: pointer;
  transition: all var(--duration-fast) var(--curve-standard);
}

.f-currency-pill.is-active {
  background-color: var(--color-brand-bg);
  color: var(--color-brand-fg-on-brand);
}

/* Steps Pipeline Inside Session Card */
.f-pipeline {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-s);
}

.f-pipeline-step {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-s) var(--spacing-m);
  border-radius: var(--radius-m);
  background-color: var(--color-neutral-bg-1);
  border: 1px solid var(--color-neutral-stroke-2);
  font-size: var(--font-size-caption1);
  transition: all var(--duration-fast) var(--curve-standard);
}

.f-pipeline-step.is-done {
  border-color: var(--color-success-stroke);
  background-color: var(--color-success-bg);
}

.f-pipeline-step.is-current {
  border-color: var(--color-brand-stroke);
  background-color: var(--color-brand-bg-subtle);
}

.f-step-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
  font-weight: 600;
}

.f-step-tag {
  font-family: var(--font-mono);
  font-size: 11px;
}

/* Simulator Trigger Button */
.f-sim-trigger-btn {
  width: 100%;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-s);
  padding: 8px 16px;
  line-height: 20px;
  border-radius: var(--radius-m);
  background-color: var(--color-brand-bg);
  color: var(--color-brand-fg-on-brand);
  font-weight: 600;
  font-size: var(--font-size-body1);
  cursor: pointer;
  transition: all var(--duration-fast) var(--curve-standard);
}

.f-sim-trigger-btn:hover {
  background-color: var(--color-brand-bg-hover);
  box-shadow: var(--shadow-4);
}

.f-sim-trigger-btn.is-simulating {
  background-color: var(--color-neutral-bg-4);
  color: var(--color-neutral-fg-3);
  cursor: wait;
}

@media (max-width: 620px) {
  .f-session-endpoint-row {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-s);
  }

  .f-session-preview-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--spacing-l);
  }

  .f-virtual-card {
    justify-self: center;
    width: min(100%, 360px);
  }

  .f-session-payment-summary {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-m);
  }
}

/* --------------------------------------------------------------------------
   7. Security & Trust Strip
   -------------------------------------------------------------------------- */
.f-trust-strip {
  background-color: var(--color-neutral-bg-card);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xxl) var(--spacing-xxxl);
  box-shadow: var(--shadow-4);
  margin-top: -32px;
  position: relative;
  z-index: 10;
}

.f-trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xxl);
  align-items: center;
}

.f-trust-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-m);
}

.f-trust-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-l);
  background-color: var(--color-brand-bg-subtle);
  color: var(--color-brand-fg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.f-trust-text h4 {
  font-size: var(--font-size-body1);
  font-weight: 700;
  color: var(--color-neutral-fg-1);
}

.f-trust-text p {
  font-size: var(--font-size-caption1);
  color: var(--color-neutral-fg-3);
}

/* Supported Payment Rails Wall */
.f-rails-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  margin-top: var(--spacing-xl);
  border-top: 1px solid var(--color-neutral-stroke-2);
}

.f-rail-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-s);
  font-size: var(--font-size-caption1);
  font-weight: 600;
  color: var(--color-neutral-fg-2);
}

/* --------------------------------------------------------------------------
   8. Process / Step Timeline Flow
   -------------------------------------------------------------------------- */
.f-flow-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  position: relative;
}

@media (min-width: 900px) {
  .f-flow-timeline {
    grid-template-columns: repeat(4, 1fr);
  }
}

.f-timeline-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.f-timeline-step-badge {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-brand-fg);
  border-radius: 50%;
  background-color: var(--color-neutral-bg-card);
  color: var(--color-brand-fg);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--spacing-l);
  box-shadow: 0 0 0 3px rgba(24, 128, 212, 0.1), 0 0 14px rgba(24, 128, 212, 0.18);
  transition: transform var(--duration-fast) var(--curve-standard),
              border-color var(--duration-fast) var(--curve-standard),
              box-shadow var(--duration-fast) var(--curve-standard);
}

.f-timeline-step-badge::before {
  position: absolute;
  inset: -5px;
  border: 1px solid rgba(24, 128, 212, 0.22);
  border-radius: 50%;
  content: '';
}

.f-card--interactive:hover .f-timeline-step-badge {
  transform: translateY(-2px) scale(1.04);
  border-color: var(--color-brand-fg);
  box-shadow: 0 0 0 4px rgba(24, 128, 212, 0.14), 0 0 18px rgba(24, 128, 212, 0.24);
}

.f-timeline-card h3 {
  font-size: var(--font-size-subtitle2);
  font-weight: 700;
  margin-bottom: var(--spacing-s);
  color: var(--color-neutral-fg-1);
}

.f-timeline-card p {
  font-size: var(--font-size-body1);
  color: var(--color-neutral-fg-3);
  line-height: var(--line-height-body1);
  margin-bottom: var(--spacing-m);
  flex: 1;
}

.f-timeline-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-s);
  background-color: var(--color-neutral-bg-3);
  color: var(--color-neutral-fg-2);
  display: inline-block;
  align-self: flex-start;
}

/* --------------------------------------------------------------------------
   9. Interactive Showcase with Fluent TabList
   -------------------------------------------------------------------------- */
.f-tablist {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  border-bottom: 2px solid var(--color-neutral-stroke-2);
  margin-bottom: var(--spacing-xxl);
  overflow-x: auto;
  scrollbar-width: none;
}

.f-tablist::-webkit-scrollbar {
  display: none;
}

.f-tab {
  padding: 8px var(--spacing-l);
  font-size: var(--font-size-body1);
  font-weight: 600;
  color: var(--color-neutral-fg-3);
  background: transparent;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition: all var(--duration-fast) var(--curve-standard);
}

.f-tab:hover {
  color: var(--color-neutral-fg-1);
}

.f-tab.is-active {
  color: var(--color-brand-fg);
}

.f-tab.is-active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-brand-bg);
  border-radius: var(--radius-circle);
}

.f-theater-frame {
  background-color: var(--color-neutral-bg-card);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-16);
  overflow: hidden;
}

.f-theater-header {
  padding: 0;
  background: #f1f3f4;
  border-bottom: 1px solid var(--color-neutral-stroke-1);
}

.f-chrome-tabbar {
  height: 38px;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding-inline: 12px;
  background: #dee1e6;
}

.f-chrome-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  width: min(260px, 48vw);
  height: 32px;
  padding: 0 10px;
  color: #3c4043;
  background: #fff;
  border-radius: 8px 8px 0 0;
  font-size: 12px;
}

.f-chrome-favicon,
.f-chrome-profile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  color: #fff;
  background: #1769e8;
  font-size: 10px;
  font-weight: 700;
}

.f-chrome-tab-title {
  overflow: hidden;
  flex: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.f-chrome-tab-close,
.f-chrome-new-tab,
.f-chrome-window-controls span,
.f-chrome-nav span,
.f-chrome-star,
.f-chrome-menu {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #5f6368;
  font-family: Arial, sans-serif;
  line-height: 1;
}

.f-chrome-tab-close {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  font-size: 15px;
}

.f-chrome-new-tab {
  width: 26px;
  height: 26px;
  font-size: 20px;
}

.f-chrome-window-controls {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-inline-start: auto;
  padding-inline: 12px;
  height: 100%;
}

.f-chrome-window-controls span {
  font-size: 14px;
}

.f-chrome-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 6px 14px;
}

.f-chrome-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.f-chrome-nav span {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 22px;
}

.f-theater-url {
  flex: 1;
  min-width: 0;
  min-height: 32px;
  background: #fff;
  border: 1px solid #dadce0;
  border-radius: 18px;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: var(--font-size-caption1);
  color: #3c4043;
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
}

.f-theater-url span:first-of-type {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.f-chrome-profile {
  width: 26px;
  height: 26px;
  font-size: 12px;
}

.f-chrome-menu {
  width: 20px;
  height: 26px;
  font-size: 19px;
}

.f-theater-body {
  padding: var(--spacing-xxxl);
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.f-theater-view {
  display: none;
  width: 100%;
}

.f-theater-view.is-active {
  display: block;
}

.f-checkout-preview {
  width: 100%;
  max-width: 620px;
  height: 560px;
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-l);
  background: var(--color-neutral-bg-1);
  box-shadow: var(--shadow-8);
}

.f-checkout-iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #f6f9fe;
}

.f-mobile-checkout-device {
  width: min(100%, 390px);
  height: 680px;
  margin-inline: auto;
  overflow: hidden;
  border: 8px solid #202124;
  border-radius: 36px;
  background: #f6f9fe;
  box-shadow: var(--shadow-16);
}

.f-checkout-iframe--mobile {
  border-radius: 27px;
}

@media (max-width: 600px) {
  .f-chrome-tab {
    width: min(210px, 58vw);
  }

  .f-chrome-window-controls {
    gap: 8px;
    padding-inline: 6px;
  }

  .f-chrome-window-controls span:not(:last-child),
  .f-chrome-profile,
  .f-chrome-menu {
    display: none;
  }

  .f-chrome-toolbar {
    gap: 4px;
    padding-inline: 7px;
  }

  .f-chrome-nav {
    gap: 0;
  }

  .f-chrome-nav span {
    width: 23px;
  }

  .f-theater-url {
    gap: 5px;
    padding-inline: 8px;
    font-size: 10px;
  }

  .f-theater-body {
    min-height: 300px;
    padding: var(--spacing-m);
  }

  .f-checkout-preview {
    height: 520px;
  }

  .f-mobile-checkout-device {
    height: 620px;
    border-width: 6px;
    border-radius: 30px;
  }

  .f-checkout-iframe--mobile {
    border-radius: 24px;
  }
}

/* --------------------------------------------------------------------------
   10. Acceptance Channels Grid
   -------------------------------------------------------------------------- */
.f-channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.f-channel-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-m);
  height: 100%;
}

.f-channel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.f-channel-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-l);
  background-color: var(--color-brand-bg-subtle);
  color: var(--color-brand-fg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.f-channel-title {
  font-size: var(--font-size-subtitle2);
  font-weight: 700;
  color: var(--color-neutral-fg-1);
}

.f-channel-desc {
  font-size: var(--font-size-body1);
  color: var(--color-neutral-fg-3);
  flex: 1;
}

/* --------------------------------------------------------------------------
   11. Audience Personas (Merchants, Platforms, Developers)
   -------------------------------------------------------------------------- */
.f-audience-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xxl);
}

@media (min-width: 900px) {
  .f-audience-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.f-audience-card {
  display: flex;
  flex-direction: column;
  position: relative;
  border-top: 4px solid var(--color-brand-stroke);
}

.f-audience-persona {
  font-size: var(--font-size-caption1);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-brand-fg);
  margin-bottom: var(--spacing-s);
}

.f-audience-title {
  font-size: var(--font-size-title3);
  font-weight: 700;
  margin-bottom: var(--spacing-m);
  color: var(--color-neutral-fg-1);
}

.f-audience-desc {
  font-size: var(--font-size-body1);
  color: var(--color-neutral-fg-3);
  margin-bottom: var(--spacing-xl);
  flex: 1;
}

.f-audience-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-s);
  margin-bottom: var(--spacing-xxl);
}

.f-audience-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-s);
  font-size: var(--font-size-body1);
  color: var(--color-neutral-fg-2);
}

.f-audience-list li svg {
  color: var(--color-success-fg);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   12. Platform Capabilities (Asymmetric Feature Showcases)
   -------------------------------------------------------------------------- */
.f-feature-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-5xl);
  align-items: center;
  margin-bottom: var(--spacing-7xl);
}

@media (min-width: 992px) {
  .f-feature-row {
    grid-template-columns: 1fr 1fr;
  }
  .f-feature-row--reversed > :first-child {
    order: 2;
  }
}

.f-feature-content h3 {
  font-size: var(--font-size-title2);
  line-height: var(--line-height-title2);
  font-weight: 700;
  color: var(--color-neutral-fg-1);
  margin-bottom: var(--spacing-m);
}

.f-feature-content p {
  font-size: var(--font-size-body2);
  color: var(--color-neutral-fg-3);
  margin-bottom: var(--spacing-xxl);
}

.f-feature-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-l);
  margin-bottom: var(--spacing-xxl);
}

.f-feature-bullet {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-m);
}

.f-bullet-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-m);
  background-color: var(--color-brand-bg-subtle);
  color: var(--color-brand-fg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.f-bullet-text strong {
  display: block;
  font-size: var(--font-size-body1);
  color: var(--color-neutral-fg-1);
}

.f-bullet-text span {
  font-size: var(--font-size-caption1);
  color: var(--color-neutral-fg-3);
}

/* --------------------------------------------------------------------------
   13. Developer API Split Section & Code Block
   -------------------------------------------------------------------------- */
.f-code-terminal {
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-stroke);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-16);
  overflow: hidden;
}

.f-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-s) var(--spacing-l);
  background-color: var(--color-code-header-bg);
  border-bottom: 1px solid var(--color-code-stroke);
}

.f-code-tabs {
  display: flex;
  gap: 2px;
}

.f-code-tab {
  padding: 4px var(--spacing-m);
  border-radius: var(--radius-s);
  font-family: var(--font-mono);
  font-size: 12px;
  color: #8b949e;
  background: transparent;
  cursor: pointer;
  transition: all var(--duration-fast) var(--curve-standard);
}

.f-code-tab:hover {
  color: #c9d1d9;
}

.f-code-tab.is-active {
  color: #58a6ff;
  background-color: rgba(56, 139, 253, 0.15);
  font-weight: 600;
}

.f-code-copy-btn {
  font-size: 12px;
  padding: 4px var(--spacing-m);
  border-radius: var(--radius-s);
  background-color: rgba(255, 255, 255, 0.08);
  color: #c9d1d9;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: all var(--duration-fast) var(--curve-standard);
}

.f-code-copy-btn:hover {
  background-color: rgba(255, 255, 255, 0.16);
  color: #ffffff;
}

.f-code-pre {
  padding: var(--spacing-xxl);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 22px;
  color: var(--color-code-fg);
  overflow-x: auto;
  direction: ltr;
  text-align: left;
}

/* --------------------------------------------------------------------------
   14. Fluent Accordion (FAQ)
   -------------------------------------------------------------------------- */
.f-accordion {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-neutral-stroke-1);
}

.f-accordion-item {
  border-bottom: 1px solid var(--color-neutral-stroke-1);
}

.f-accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xxl) 0;
  font-size: var(--font-size-subtitle1);
  font-weight: 600;
  color: var(--color-neutral-fg-1);
  text-align: start;
  cursor: pointer;
  transition: color var(--duration-fast) var(--curve-standard);
}

.f-accordion-header:hover {
  color: var(--color-brand-fg);
}

.f-accordion-icon {
  transition: transform var(--duration-normal) var(--curve-standard);
  color: var(--color-neutral-fg-3);
}

.f-accordion-item.is-open .f-accordion-icon {
  transform: rotate(180deg);
}

.f-accordion-panel {
  display: none;
  padding-bottom: var(--spacing-xxl);
  font-size: var(--font-size-body2);
  line-height: var(--line-height-body2);
  color: var(--color-neutral-fg-3);
}

.f-accordion-item.is-open .f-accordion-panel {
  display: block;
}

/* --------------------------------------------------------------------------
   15. ZolnaPay Mobile & Pro Tier
   -------------------------------------------------------------------------- */
.f-pro-banner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: var(--spacing-xxxl);
  background: linear-gradient(135deg, var(--brand-20) 0%, var(--brand-40) 100%);
  color: #ffffff;
  border-radius: var(--radius-xxl);
  padding: var(--spacing-5xl) var(--spacing-4xl);
  box-shadow: var(--shadow-28);
  position: relative;
  overflow: hidden;
}

.f-pro-content {
  max-width: 640px;
}

@media (max-width: 760px) {
  .f-pro-banner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--spacing-xl);
  }
}

.f-pro-content h2 {
  font-size: var(--font-size-title1);
  line-height: var(--line-height-title1);
  font-weight: 800;
  margin-bottom: var(--spacing-m);
}

.f-pro-content p {
  font-size: var(--font-size-body2);
  color: var(--brand-120);
  margin-bottom: var(--spacing-xxl);
}

/* --------------------------------------------------------------------------
   16. Final Call to Action
   -------------------------------------------------------------------------- */
.f-cta-band {
  text-align: center;
  background-color: var(--color-neutral-bg-card);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6xl) var(--spacing-xxxl);
  box-shadow: var(--shadow-8);
  margin-block: var(--spacing-6xl);
}

.f-cta-band h2 {
  font-size: var(--font-size-title1);
  font-weight: 800;
  color: var(--color-neutral-fg-1);
  margin-bottom: var(--spacing-m);
}

.f-cta-band p {
  font-size: var(--font-size-subtitle2);
  color: var(--color-neutral-fg-3);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--spacing-xxxl);
}

.f-cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-l);
}

/* --------------------------------------------------------------------------
   17. Fluent Footer
   -------------------------------------------------------------------------- */
.f-footer {
  background-color: var(--color-neutral-bg-2);
  border-top: 1px solid var(--color-neutral-stroke-1);
  padding-top: var(--spacing-6xl);
  padding-bottom: var(--spacing-4xl);
  color: var(--color-neutral-fg-3);
  font-size: var(--font-size-body1);
}

.f-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-5xl);
  margin-bottom: var(--spacing-5xl);
}

@media (min-width: 768px) {
  .f-footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

.f-footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-m);
}

.f-footer-col h5 {
  font-size: var(--font-size-caption1);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-neutral-fg-1);
  margin-bottom: var(--spacing-l);
}

.f-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-m);
}

.f-footer-links a:hover {
  color: var(--color-brand-fg);
}

.f-footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-l);
  padding-top: var(--spacing-xxl);
  border-top: 1px solid var(--color-neutral-stroke-2);
  font-size: var(--font-size-caption1);
}

.f-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-s);
  padding: 4px var(--spacing-m);
  border-radius: var(--radius-circle);
  background-color: var(--color-success-bg);
  color: var(--color-success-fg);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   18. Scroll To Top Button
   -------------------------------------------------------------------------- */
.f-to-top {
  position: fixed;
  bottom: var(--spacing-xxl);
  inset-inline-end: var(--spacing-xxl);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-circle);
  background-color: var(--color-neutral-bg-card);
  color: var(--color-neutral-fg-1);
  border: 1px solid var(--color-neutral-stroke-1);
  box-shadow: var(--shadow-8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-fast) var(--curve-standard);
  z-index: 990;
}

.f-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.f-to-top:hover {
  background-color: var(--color-neutral-bg-card-hover);
  box-shadow: var(--shadow-16);
  transform: translateY(-2px);
}

/* Shared glass surfaces and controls */
.f-section--alt,
.f-section--subtle {
  background:
    radial-gradient(ellipse at 8% 0%, rgba(24, 128, 212, 0.06), transparent 42%),
    linear-gradient(180deg, rgba(245, 249, 254, 0.84), rgba(255, 255, 255, 0.94));
  border-color: rgba(24, 128, 212, 0.1);
}

.f-card,
.f-session-card,
.f-trust-strip {
  background-color: rgba(255, 255, 255, 0.82);
  border-color: rgba(24, 128, 212, 0.14);
  box-shadow: 0 16px 40px -28px rgba(15, 56, 94, 0.42), 0 1px 2px rgba(15, 56, 94, 0.05);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.f-card--interactive:hover {
  border-color: rgba(24, 128, 212, 0.32);
  box-shadow: 0 22px 44px -28px rgba(15, 79, 179, 0.45), 0 4px 12px rgba(15, 79, 179, 0.06);
}

.f-btn {
  min-height: 42px;
  border-radius: 10px;
  transition: transform var(--duration-fast) var(--curve-standard),
    background-color var(--duration-fast) var(--curve-standard),
    border-color var(--duration-fast) var(--curve-standard),
    box-shadow var(--duration-fast) var(--curve-standard),
    color var(--duration-fast) var(--curve-standard);
}

.f-btn--primary {
  background-image: linear-gradient(135deg, #2389e6, #0f4fb3);
  box-shadow: 0 8px 18px -12px rgba(15, 79, 179, 0.8);
}

.f-btn--primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px -14px rgba(15, 79, 179, 0.85);
}

.f-btn--secondary {
  background-color: rgba(255, 255, 255, 0.72);
  border-color: rgba(24, 128, 212, 0.18);
}

.f-btn--subtle:hover,
.f-nav-item:hover,
.f-drawer-link:hover {
  background-color: rgba(24, 128, 212, 0.08);
}

.f-nav-header {
  background-color: rgba(255, 255, 255, 0.78);
  border-bottom-color: rgba(24, 128, 212, 0.12);
}

.f-nav-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 30px -22px rgba(15, 56, 94, 0.5);
}

.f-tablist,
.f-code-tabs {
  background: rgba(238, 245, 253, 0.72);
  border: 1px solid rgba(24, 128, 212, 0.12);
  border-radius: 12px;
  padding: 4px;
}

.f-tab,
.f-code-tab {
  min-height: 40px;
  border-radius: 9px;
  transition: color var(--duration-fast) var(--curve-standard),
    background-color var(--duration-fast) var(--curve-standard),
    box-shadow var(--duration-fast) var(--curve-standard);
}

.f-tab.is-active,
.f-code-tab.is-active {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 2px 8px rgba(15, 56, 94, 0.12);
}

.f-tab.is-active::after {
  display: none;
}

.f-section :where(input:not([type='checkbox']):not([type='radio']), select, textarea),
.f-hero :where(input:not([type='checkbox']):not([type='radio']), select, textarea) {
  min-height: 44px;
  max-width: 100%;
  border: 1px solid rgba(24, 128, 212, 0.2);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.84);
  transition: border-color var(--duration-fast) var(--curve-standard),
    box-shadow var(--duration-fast) var(--curve-standard),
    background-color var(--duration-fast) var(--curve-standard);
}

.f-section :where(input:not([type='checkbox']):not([type='radio']), select, textarea):focus,
.f-hero :where(input:not([type='checkbox']):not([type='radio']), select, textarea):focus {
  border-color: var(--color-brand-bg);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(24, 128, 212, 0.14);
  outline: none;
}

.f-section :where(button, a),
.f-hero :where(button, a) {
  -webkit-tap-highlight-color: transparent;
}

[data-theme='dark'] .f-section--alt,
[data-theme='dark'] .f-section--subtle {
  background:
    radial-gradient(ellipse at 8% 0%, rgba(24, 128, 212, 0.12), transparent 42%),
    linear-gradient(180deg, rgba(25, 31, 39, 0.9), rgba(26, 26, 26, 0.94));
  border-color: rgba(154, 201, 241, 0.12);
}

[data-theme='dark'] .f-card,
[data-theme='dark'] .f-session-card,
[data-theme='dark'] .f-trust-strip {
  background-color: rgba(32, 38, 46, 0.84);
  border-color: rgba(154, 201, 241, 0.16);
}

[data-theme='dark'] .f-tablist,
[data-theme='dark'] .f-code-tabs {
  background: rgba(20, 26, 34, 0.8);
  border-color: rgba(154, 201, 241, 0.14);
}

[data-theme='dark'] .f-tab.is-active,
[data-theme='dark'] .f-code-tab.is-active {
  background: rgba(48, 58, 70, 0.96);
}

[data-theme='dark'] .f-section :where(input:not([type='checkbox']):not([type='radio']), select, textarea),
[data-theme='dark'] .f-hero :where(input:not([type='checkbox']):not([type='radio']), select, textarea) {
  color: var(--color-neutral-fg-1);
  background: rgba(32, 38, 46, 0.84);
  border-color: rgba(154, 201, 241, 0.2);
}

@media (max-width: 767px) {
  .f-wrap {
    padding-inline: max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right));
  }

  .f-section {
    padding-block: clamp(40px, 10vw, 64px);
  }

  .f-section-header {
    margin-bottom: 32px;
  }

  .f-hero {
    padding-block: 48px 64px;
  }

  .f-btn {
    min-height: 44px;
  }
}

@media (max-width: 480px) {
  .f-nav-actions {
    gap: 4px;
  }

  .f-nav-actions .f-btn--sm {
    padding-inline: 9px;
    font-size: 12px;
  }

  .f-brand-wordmark {
    width: 112px;
  }

  .f-hero-cta > .f-btn {
    flex: 1 1 100%;
  }

  .f-card,
  .f-session-card,
  .f-trust-strip {
    border-radius: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .f-card--interactive:hover,
  .f-btn--primary:hover:not(:disabled) {
    transform: none;
  }
}

/* Brand system finishing pass */
body {
  background:
    radial-gradient(ellipse 72% 34% at 50% -8%, rgba(37, 130, 232, 0.08), transparent 70%),
    #f5f8fc;
}

.f-nav-header {
  height: 68px;
  box-shadow: 0 1px 0 rgba(14, 42, 76, 0.025);
}

.f-nav-inner {
  gap: clamp(12px, 2vw, 28px);
}

.f-nav-menu {
  gap: 2px;
}

.f-nav-item {
  min-height: 40px;
  padding-inline: 10px;
  font-size: 13px;
  font-weight: 600;
}

.f-hero {
  padding-block: clamp(64px, 8vw, 100px) clamp(72px, 9vw, 112px);
  background:
    radial-gradient(ellipse 52% 64% at 10% 8%, rgba(47, 131, 225, 0.13), transparent 70%),
    radial-gradient(ellipse 36% 45% at 96% 12%, rgba(16, 185, 203, 0.08), transparent 68%),
    linear-gradient(180deg, #fbfdff, #f2f7fd);
}

.f-hero-grid {
  column-gap: clamp(40px, 7vw, 92px);
  row-gap: 48px;
}

.f-hero-title {
  max-width: 12ch;
  font-size: clamp(40px, 5.1vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

[dir='rtl'] .f-hero-title {
  line-height: 1.28;
  letter-spacing: 0;
}

.f-brand-accent {
  background: linear-gradient(100deg, #1670d2, #1c83d2 55%, #128e9a);
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.f-muted-accent {
  color: #6a7b91;
}

.f-hero-lede {
  max-width: 56ch;
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.78;
}

.f-hero-cta {
  gap: 12px;
}

.f-hero-cta .f-btn {
  min-height: 48px;
  padding-inline: 21px;
  border-radius: 12px;
}

.f-hero-telemetry {
  gap: 10px 16px;
  border-top-color: rgba(36, 67, 105, 0.12);
}

.f-telemetry-item {
  font-size: 12px;
}

.f-session-card {
  overflow: hidden;
  border-radius: 22px;
  border-color: rgba(177, 202, 233, 0.8);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 36px 82px -54px rgba(11, 51, 99, 0.62), 0 4px 14px rgba(17, 49, 84, 0.06);
}

.f-session-card-header {
  min-height: 48px;
  background: rgba(245, 249, 254, 0.86);
}

.f-session-card-body {
  gap: 14px;
  padding: clamp(14px, 2.3vw, 24px);
}

.f-session-panel {
  border-color: rgba(188, 208, 234, 0.72);
  border-radius: 15px;
  background: linear-gradient(145deg, rgba(249, 252, 255, 0.96), rgba(239, 246, 254, 0.84));
}

.f-virtual-card {
  box-shadow: 0 18px 34px -22px rgba(8, 33, 68, 0.68);
}

.f-currency-pill {
  min-height: 28px;
  border-radius: 7px;
}

.f-trust-strip {
  margin-top: -28px;
  border-radius: 17px;
  background: rgba(255, 255, 255, 0.94);
}

.f-section {
  padding-block: clamp(64px, 8vw, 100px);
}

.f-section-header {
  margin-bottom: clamp(32px, 4.5vw, 54px);
}

.f-section-title {
  letter-spacing: -0.035em;
  text-wrap: balance;
}

[dir='rtl'] .f-section-title {
  letter-spacing: 0;
  line-height: 1.35;
}

.f-section-desc {
  max-width: 62ch;
  margin-inline: auto;
  line-height: 1.8;
}

.f-section--alt,
.f-section--subtle {
  border-block-color: rgba(27, 109, 224, 0.1);
  background:
    radial-gradient(ellipse 54% 28% at 92% 0%, rgba(27, 109, 224, 0.045), transparent 72%),
    linear-gradient(180deg, rgba(242, 247, 253, 0.8), rgba(248, 251, 255, 0.96));
}

.f-card,
.f-timeline-card,
.f-audience-card {
  border-radius: 17px;
}

.f-footer {
  background: linear-gradient(145deg, #0b1930, #0e2545);
}

.f-to-top {
  border-radius: 13px;
  border-color: rgba(27, 109, 224, 0.18);
}

@media (min-width: 992px) {
  .f-hero-grid {
    grid-template-columns: minmax(0, 1.03fr) minmax(460px, 0.97fr);
  }
}

@media (max-width: 767px) {
  .f-nav-header {
    height: 60px;
  }

  .f-hero {
    padding-block: 48px 72px;
  }

  .f-hero-title {
    max-width: 14ch;
    font-size: clamp(38px, 10vw, 54px);
  }

  .f-hero-cta .f-btn {
    flex: 1 1 100%;
  }

  .f-trust-strip {
    margin-top: -34px;
    padding: 18px;
  }

  .f-session-card {
    border-radius: 17px;
  }
}

[data-theme='dark'] body {
  background:
    radial-gradient(ellipse 72% 34% at 50% -8%, rgba(37, 130, 232, 0.12), transparent 70%),
    #141a22;
}

[data-theme='dark'] .f-hero {
  background:
    radial-gradient(ellipse 52% 64% at 10% 8%, rgba(47, 131, 225, 0.16), transparent 70%),
    radial-gradient(ellipse 36% 45% at 96% 12%, rgba(16, 185, 203, 0.08), transparent 68%),
    linear-gradient(180deg, #19222e, #171d27);
}

[data-theme='dark'] .f-muted-accent {
  color: #a7b7ca;
}

[data-theme='dark'] .f-session-card-header {
  background: rgba(22, 31, 42, 0.9);
}

[data-theme='dark'] .f-session-panel {
  border-color: rgba(154, 187, 223, 0.18);
  background: linear-gradient(145deg, rgba(34, 47, 63, 0.94), rgba(27, 38, 52, 0.9));
}

[data-theme='dark'] .f-currency-pill {
  border-color: rgba(154, 187, 223, 0.22);
  background: rgba(32, 45, 60, 0.92);
  color: #d8e5f3;
}

[data-theme='dark'] .f-nav-header {
  box-shadow: 0 1px 0 rgba(197, 218, 243, 0.08);
}

[data-theme='dark'] .f-section--alt,
[data-theme='dark'] .f-section--subtle {
  background:
    radial-gradient(ellipse 54% 28% at 92% 0%, rgba(27, 109, 224, 0.11), transparent 72%),
    linear-gradient(180deg, rgba(25, 31, 39, 0.9), rgba(26, 26, 26, 0.94));
  border-color: rgba(154, 201, 241, 0.12);
}

[data-theme='dark'] .f-trust-strip {
  background-color: rgba(32, 38, 46, 0.94);
}