/*
 * vnzodev: landing-v4.css — Tier-1 Cinematic Storytelling
 * Full-screen stacked slides, zero native scroll, pure transitions.
 * Palette: deep navy + emerald + frost white
 */

/* ── DESIGN TOKENS ── */
:root {
  --c-bg: #0a0f1e;
  --c-surface: #111827;
  --c-surface-glass: rgba(17, 24, 39, 0.65);
  --c-primary: #10b981;
  --c-primary-soft: rgba(16, 185, 129, 0.15);
  --c-primary-glow: rgba(16, 185, 129, 0.35);
  --c-accent: #34d399;
  --c-text: #f1f5f9;
  --c-text-dim: rgba(241, 245, 249, 0.55);
  --c-border: rgba(255, 255, 255, 0.07);
  --c-border-hover: rgba(255, 255, 255, 0.14);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-full: 9999px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-slide: 0.8s;
  --duration-ui: 0.5s;
  --font: 'Inter', 'Space Grotesk', system-ui, -apple-system, sans-serif;
}

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

html.v4-landing {
  height: 100%;
  overflow: hidden;
  background: var(--c-bg);
}

body.v4-landing {
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── SLIDE ENGINE ── */
.v4-viewport {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 1;
}

.v4-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 132px 5% 60px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(40px) scale(0.97);
  filter: blur(8px);
  transition:
    opacity var(--duration-slide) var(--ease-out),
    transform var(--duration-slide) var(--ease-out),
    filter var(--duration-slide) var(--ease-out),
    visibility 0s linear var(--duration-slide);
  will-change: opacity, transform, filter;
  z-index: 1;
}

.v4-slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition-delay: 0s;
  z-index: 2;
}

.v4-slide.is-leaving-up {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-60px) scale(1.03);
  filter: blur(6px);
}

.v4-slide.is-leaving-down {
  opacity: 0;
  visibility: hidden;
  transform: translateY(60px) scale(0.97);
  filter: blur(6px);
}

/* ── HEADER ── */
.v4-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0;
  display: flex;
  justify-content: center;
  pointer-events: none;
  transform: translateY(-120%);
  opacity: 0;
  background: linear-gradient(180deg, rgba(5, 10, 24, 0.78) 0%, rgba(8, 15, 36, 0.42) 45%, rgba(10, 15, 30, 0) 100%);
  backdrop-filter: blur(6px) saturate(1.05);
  -webkit-backdrop-filter: blur(6px) saturate(1.05);
  transition:
    transform 1.2s var(--ease-out),
    opacity 1s var(--ease-out);
}

.v4-header.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.v4-header.is-hidden {
  transform: translateY(-120%);
  opacity: 0;
}

.v4-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  background: transparent;
  border: 0;
  padding: 20px 40px;
  margin-top: 0;
  pointer-events: auto;
  box-shadow: none;
}

.v4-logo {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  background: transparent;
  border: 0;
  opacity: 1;
  transition: opacity var(--duration-ui) var(--ease-smooth);
}

.v4-logo img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.v4-logo span {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  letter-spacing: -0.01em;
}

/* Nav links */
.v4-nav {
  flex: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.v4-nav-main {
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 0;
  background: transparent;
}

/* Specificity override for static-pages.css */
html.v4-landing body.v4-landing .v4-nav-link {
  color: #ffffff !important;
  text-decoration: none !important;
  font-weight: 500 !important;
  font-size: 0.95rem;
  padding: 8px 0;
  transition: all var(--duration-ui) var(--ease-smooth);
  white-space: nowrap;
  opacity: 0.8 !important;
  position: relative;
  background: transparent !important;
  background-color: transparent !important;
  box-shadow: none !important;
}

html.v4-landing body.v4-landing .v4-nav-link:hover,
html.v4-landing body.v4-landing .v4-nav-link.is-active {
  color: #ffffff !important;
  background: transparent !important;
  background-color: transparent !important;
  opacity: 1 !important;
  box-shadow: none !important;
  text-shadow: none !important;
}

html.v4-landing body.v4-landing .v4-nav-link::after {
  content: none !important;
  display: none !important;
}

/* Header Actions */
.v4-header-actions {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
}

.v4-lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
}

.v4-lang-btn {
  background: transparent;
  border: none;
  color: #B0B0B0;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--duration-ui) var(--ease-smooth);
}

.v4-lang-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.v4-lang-btn.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

.v4-btn-panel {
  background: var(--c-primary);
  color: #fff !important;
  min-width: 110px;
  padding: 10px 24px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none !important;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px var(--c-primary-glow);
  transition: all var(--duration-ui) var(--ease-smooth);
}

.v4-btn-panel:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--c-primary-glow);
  filter: brightness(1.1);
}

.v4-btn-panel:focus-visible {
  outline: 2px solid rgba(143, 192, 255, 0.9);
  outline-offset: 2px;
}

/* Mobile toggle */
.v4-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: rgba(7, 15, 34, 0.54);
  border: 1px solid rgba(123, 151, 196, 0.2);
  cursor: pointer;
  padding: 10px 9px;
  border-radius: 12px;
  z-index: 110;
  box-shadow: none;
}

.v4-mobile-toggle span {
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.4s var(--ease-out);
}

.v4-mobile-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.v4-mobile-toggle.active span:nth-child(2) { opacity: 0; }
.v4-mobile-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── SLIDE: HERO ── */
.v4-hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  max-width: 1200px;
  width: 100%;
  align-items: center;
}

.v4-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--c-primary-soft);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--c-accent);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.6s var(--ease-out) 0.2s;
}

.v4-slide.is-active .v4-hero-badge {
  opacity: 1;
  transform: translateY(0);
}

.v4-hero-title {
  font-size: clamp(2.8rem, 7vw, 5rem);
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #fff 30%, rgba(255, 255, 255, 0.5));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.7s var(--ease-out) 0.3s;
}

.v4-slide.is-active .v4-hero-title {
  opacity: 1;
  transform: translateY(0);
}

.v4-hero-sub {
  font-size: 1.1rem;
  color: var(--c-text-dim);
  line-height: 1.7;
  max-width: 500px;
  margin-bottom: 32px;
  opacity: 0;
  transform: translateY(16px);
  transition: all 0.7s var(--ease-out) 0.45s;
}

.v4-slide.is-active .v4-hero-sub {
  opacity: 1;
  transform: translateY(0);
}

.v4-hero-ctas {
  display: flex;
  gap: 12px;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(14px);
  transition: all 0.6s var(--ease-out) 0.55s;
}

.v4-slide.is-active .v4-hero-ctas {
  opacity: 1;
  transform: translateY(0);
}

.v4-btn {
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  border: none;
  transition: all var(--duration-ui) var(--ease-out);
}

.v4-btn--primary {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  box-shadow: 0 4px 16px var(--c-primary-glow);
}

.v4-btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px var(--c-primary-glow);
}

.v4-btn--ghost {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  border: 1px solid var(--c-border);
}

.v4-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--c-border-hover);
  transform: translateY(-2px);
}

/* Hero stats */
.v4-hero-stats {
  display: flex;
  gap: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--c-border);
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.6s var(--ease-out) 0.65s;
}

.v4-slide.is-active .v4-hero-stats {
  opacity: 1;
  transform: translateY(0);
}

.v4-stat-val {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
}

.v4-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--c-text-dim);
  margin-top: 2px;
  letter-spacing: 0.1em;
}

/* Hero visual */
.v4-hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 380px;
}

.v4-hero-orb {
  position: absolute;
  width: 130%;
  height: 130%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12), transparent 65%);
  filter: blur(50px);
  z-index: 0;
  animation: v4-orb-float 12s infinite alternate ease-in-out;
}

@keyframes v4-orb-float {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(4%, -4%) scale(1.08); }
}

.v4-card-float {
  position: absolute;
  background: var(--c-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--c-border);
  padding: 18px 22px;
  border-radius: var(--radius-md);
  width: 210px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  z-index: 2;
  opacity: 0;
  transition: all 0.8s var(--ease-out);
}

.v4-slide.is-active .v4-card-float {
  opacity: 1;
}

.v4-card-float--driver {
  top: 10%;
  left: 0;
  transform: translateX(-20px) rotate(-2deg);
  transition-delay: 0.5s;
  animation: v4-float-a 7s infinite ease-in-out;
}

.v4-slide.is-active .v4-card-float--driver {
  transform: translateX(0) rotate(-2deg);
}

.v4-card-float--host {
  bottom: 10%;
  right: 0;
  transform: translateX(20px) rotate(2deg);
  transition-delay: 0.7s;
  animation: v4-float-b 9s infinite ease-in-out;
}

.v4-slide.is-active .v4-card-float--host {
  transform: translateX(0) rotate(2deg);
}

@keyframes v4-float-a {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-14px) rotate(-1deg); }
}

@keyframes v4-float-b {
  0%, 100% { transform: translateY(0) rotate(2deg); }
  50% { transform: translateY(-12px) rotate(1deg); }
}

.v4-card-label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--c-accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.v4-card-title {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 3px;
}

.v4-card-desc {
  font-size: 0.82rem;
  color: var(--c-text-dim);
  margin: 0;
}

/* ── SLIDE: STORY ── */
.v4-story-inner {
  max-width: 900px;
  width: 100%;
  text-align: center;
}

.v4-story-counter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.6s var(--ease-out) 0.15s;
}

.v4-slide.is-active .v4-story-counter {
  opacity: 1;
  transform: translateY(0);
}

.v4-story-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #fff 40%, rgba(255, 255, 255, 0.55));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.7s var(--ease-out) 0.25s;
}

.v4-slide.is-active .v4-story-title {
  opacity: 1;
  transform: translateY(0);
}

.v4-story-desc {
  font-size: 1.15rem;
  color: var(--c-text-dim);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(14px);
  transition: all 0.7s var(--ease-out) 0.4s;
}

.v4-slide.is-active .v4-story-desc {
  opacity: 1;
  transform: translateY(0);
}

/* ── SLIDE: FEATURES ── */
.v4-features-inner {
  max-width: 1100px;
  width: 100%;
}

.v4-section-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  margin-bottom: 12px;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.6s var(--ease-out) 0.15s;
}

.v4-slide.is-active .v4-section-eyebrow {
  opacity: 1;
  transform: translateY(0);
}

.v4-section-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  color: #fff;
  opacity: 0;
  transform: translateY(16px);
  transition: all 0.7s var(--ease-out) 0.25s;
}

.v4-slide.is-active .v4-section-title {
  opacity: 1;
  transform: translateY(0);
}

.v4-section-sub {
  font-size: 1.05rem;
  color: var(--c-text-dim);
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.6s var(--ease-out) 0.35s;
}

.v4-slide.is-active .v4-section-sub {
  opacity: 1;
  transform: translateY(0);
}

.v4-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.v4-feature-card {
  background: var(--c-surface-glass);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  cursor: pointer;
  transition: all var(--duration-ui) var(--ease-out);
  opacity: 0;
  transform: translateY(20px);
}

.v4-slide.is-active .v4-feature-card {
  opacity: 1;
  transform: translateY(0);
}

.v4-slide.is-active .v4-feature-card:nth-child(1) { transition-delay: 0.3s; }
.v4-slide.is-active .v4-feature-card:nth-child(2) { transition-delay: 0.4s; }
.v4-slide.is-active .v4-feature-card:nth-child(3) { transition-delay: 0.5s; }

.v4-feature-card:hover {
  border-color: var(--c-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.v4-feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.v4-feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.v4-feature-card p {
  font-size: 0.9rem;
  color: var(--c-text-dim);
  line-height: 1.6;
  margin-bottom: 16px;
}

.v4-pill-btn {
  background: var(--c-primary-soft);
  color: var(--c-accent);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-ui) var(--ease-smooth);
}

.v4-pill-btn:hover {
  background: var(--c-primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--c-primary-glow);
}

/* ── SLIDE: CTA ── */
.v4-cta-inner {
  max-width: 700px;
  width: 100%;
  text-align: center;
}

.v4-cta-card {
  background: linear-gradient(145deg, rgba(16, 185, 129, 0.08), rgba(16, 185, 129, 0.02));
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  opacity: 0;
  transform: scale(0.96);
  transition: all 0.8s var(--ease-out) 0.2s;
}

.v4-slide.is-active .v4-cta-card {
  opacity: 1;
  transform: scale(1);
}

.v4-cta-card .v4-section-eyebrow { transition-delay: 0.3s; }
.v4-cta-card .v4-section-title { transition-delay: 0.4s; }
.v4-cta-card .v4-section-sub { margin-bottom: 32px; transition-delay: 0.5s; }

.v4-cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.6s var(--ease-out) 0.6s;
}

.v4-slide.is-active .v4-cta-actions {
  opacity: 1;
  transform: translateY(0);
}

/* ── SLIDE: FOOTER ── */
.v4-footer-inner {
  max-width: 1000px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.v4-footer-brand {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.6s var(--ease-out) 0.2s;
}

.v4-slide.is-active .v4-footer-brand {
  opacity: 1;
  transform: translateY(0);
}

.v4-footer-tagline {
  font-size: 0.95rem;
  color: var(--c-text-dim);
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.6s var(--ease-out) 0.3s;
}

.v4-slide.is-active .v4-footer-tagline {
  opacity: 1;
  transform: translateY(0);
}

.v4-footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  opacity: 0;
  transition: all 0.6s var(--ease-out) 0.4s;
}

.v4-slide.is-active .v4-footer-links {
  opacity: 1;
}

.v4-footer-links a {
  color: var(--c-text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--duration-ui) var(--ease-smooth);
}

.v4-footer-links a:hover {
  color: #fff;
}

.v4-footer-copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.3);
  opacity: 0;
  transition: all 0.6s var(--ease-out) 0.5s;
}

.v4-slide.is-active .v4-footer-copy {
  opacity: 1;
}

/* ── PROGRESS DOTS ── */
.v4-dots {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 90;
  opacity: 0;
  transition: opacity 0.8s var(--ease-out);
}

.v4-dots.is-visible {
  opacity: 1;
}

.v4-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all var(--duration-ui) var(--ease-out);
}

.v4-dot.is-active {
  background: var(--c-accent);
  box-shadow: 0 0 12px var(--c-primary-glow);
  transform: scale(1.4);
}

.v4-dot:hover:not(.is-active) {
  background: rgba(255, 255, 255, 0.4);
}

/* ── SCROLL CUE ── */
.v4-scroll-cue {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  transition: opacity 0.8s var(--ease-out) 1s;
}

.v4-slide.is-active .v4-scroll-cue {
  opacity: 0.5;
}

.v4-scroll-cue span {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--c-text-dim);
  font-weight: 600;
}

.v4-scroll-cue-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--c-accent), transparent);
  animation: v4-cue-pulse 2s infinite;
}

@keyframes v4-cue-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.7); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ── MODAL ── */
.v4-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s var(--ease-smooth);
}

.v4-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.v4-modal-dialog {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 480px;
  width: 90%;
  transform: translateY(20px) scale(0.96);
  transition: transform 0.4s var(--ease-out);
}

.v4-modal.is-open .v4-modal-dialog {
  transform: translateY(0) scale(1);
}

.v4-modal-close {
  float: right;
  background: none;
  border: none;
  color: var(--c-text-dim);
  font-size: 1.4rem;
  cursor: pointer;
  transition: color 0.3s;
  line-height: 1;
}

.v4-modal-close:hover { color: #fff; }

.v4-modal h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.v4-modal-body {
  font-size: 0.95rem;
  color: var(--c-text-dim);
  line-height: 1.7;
  margin-bottom: 24px;
}

.v4-modal-footer {
  display: flex;
  justify-content: flex-end;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .v4-header-bar {
    gap: 16px;
    padding: 14px 18px 10px;
  }

  .v4-logo {
    gap: 8px;
  }

  .v4-logo img {
    height: 30px;
  }

  .v4-logo span {
    font-size: 0.92rem;
  }

  .v4-nav {
    gap: 12px;
  }

  .v4-nav-main {
    gap: 20px;
    padding: 0;
  }

  .v4-nav-link {
    padding: 6px 0;
    font-size: 0.79rem;
  }

  .v4-btn-panel {
    min-width: 90px;
    padding: 8px 18px;
  }

  .v4-hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .v4-hero-sub { margin-left: auto; margin-right: auto; }
  .v4-hero-ctas { justify-content: center; }
  .v4-hero-stats { justify-content: center; }
  .v4-hero-visual { min-height: 280px; }

  .v4-features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .v4-cta-card { padding: 40px 24px; }

  .v4-dots { right: 14px; gap: 10px; }
  .v4-dot { width: 6px; height: 6px; }
}

@media (max-width: 768px) {
  .v4-header-bar {
    display: flex;
    justify-content: space-between;
    padding: 14px 16px 10px;
  }

  .v4-mobile-toggle { display: flex; }

  .v4-nav {
    display: flex;
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: rgba(10, 15, 30, 0.97);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 28px;
    transition: right 0.5s var(--ease-out);
    z-index: 105;
    border-left: 1px solid var(--c-border);
  }

  .v4-nav.is-open { right: 0; }

  .v4-nav-main {
    width: min(320px, 88%);
    flex-direction: column;
    border-radius: 18px;
    padding: 14px;
    gap: 10px;
    background: rgba(9, 18, 40, 0.58);
    border: 1px solid rgba(123, 151, 196, 0.2);
  }

  .v4-nav-link {
    width: 100%;
    text-align: center;
    font-size: 1rem;
    padding: 10px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    text-shadow: none;
  }

  .v4-nav-link::after {
    display: none;
  }

  .v4-nav-link:hover,
  .v4-nav-link.is-active {
    background: rgba(79, 143, 248, 0.18);
  }

  .v4-nav-actions {
    flex-direction: column;
    gap: 16px;
    margin-left: 0;
  }

  .v4-slide { padding: 112px 5% 40px; }

  .v4-card-float { display: none; }

  .v4-hero-title { font-size: clamp(2.2rem, 8vw, 3.2rem); }

  .v4-btn { padding: 12px 24px; font-size: 0.88rem; }

  .v4-cta-actions { flex-direction: column; align-items: center; }
}