:root {
  --vvlp-bg: #08090d;
  --vvlp-panel: #11141b;
  --vvlp-panel-2: #171b23;
  --vvlp-text: #f7f7f4;
  --vvlp-muted: #b9c0ca;
  --vvlp-line: rgba(255, 255, 255, 0.12);
  --vvlp-accent: #ffcc3d;
  --vvlp-accent-2: #2fe6a8;
  --vvlp-danger: #ff6b4a;
}

html {
  scroll-behavior: smooth;
}

body.vvlp-body {
  margin: 0;
  background: var(--vvlp-bg);
  color: var(--vvlp-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.vvlp,
.vvlp * {
  box-sizing: border-box;
}

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

.vvlp img,
.vvlp video {
  max-width: 100%;
  display: block;
}

.vvlp {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--vvlp-bg);
}

.vvlp-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3.5rem);
  background: rgba(8, 9, 13, 0.82);
  border-bottom: 1px solid var(--vvlp-line);
  backdrop-filter: blur(16px);
}

.vvlp-brand {
  font-weight: 800;
  letter-spacing: 0;
}

.vvlp-nav div {
  display: flex;
  gap: clamp(0.8rem, 2vw, 1.6rem);
  color: var(--vvlp-muted);
  font-size: 0.94rem;
}

.vvlp-hero,
.vvlp-section {
  width: 100%;
  padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 4vw, 3.5rem);
}

.vvlp-hero {
  position: relative;
  min-height: min(860px, 86vh);
  display: flex;
  align-items: center;
  padding-top: clamp(2.4rem, 5vw, 4rem);
  background-size: cover;
  background-position: center right;
  border-bottom: 1px solid var(--vvlp-line);
}

.vvlp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 9, 13, 0.96), rgba(8, 9, 13, 0.76) 48%, rgba(8, 9, 13, 0.3));
}

.vvlp-hero > * {
  position: relative;
  z-index: 1;
}

.vvlp-hero-copy,
.vvlp-section-head,
.vvlp-price-copy {
  max-width: 780px;
}

.vvlp-kicker {
  margin: 0 0 0.8rem;
  color: var(--vvlp-accent-2);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.vvlp h1,
.vvlp h2,
.vvlp h3,
.vvlp p {
  letter-spacing: 0;
}

.vvlp h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(3rem, 7vw, 6.5rem);
  line-height: 0.92;
}

.vvlp h2 {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(2rem, 4.5vw, 4.25rem);
  line-height: 1;
}

.vvlp h3 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  line-height: 1.16;
}

.vvlp-lead,
.vvlp-section-head p,
.vvlp-price-note {
  color: var(--vvlp-muted);
  font-size: clamp(1rem, 1.4vw, 1.24rem);
  line-height: 1.7;
}

.vvlp-lead {
  max-width: 720px;
  margin: 1.4rem 0 0;
}

.vvlp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.vvlp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.85rem 1.15rem;
  border: 1px solid var(--vvlp-line);
  border-radius: 8px;
  font-weight: 800;
}

.vvlp-btn-primary {
  background: var(--vvlp-accent);
  color: #161000;
  border-color: var(--vvlp-accent);
}

.vvlp-btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--vvlp-text);
}

.vvlp-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}

.vvlp-stats span,
.vvlp-channel,
.vvlp-demo-card,
.vvlp-feature-grid > div,
.vvlp-api-grid > div,
.vvlp-benefit-grid > div,
.vvlp-before-after > div,
.vvlp-bank {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--vvlp-line);
  border-radius: 8px;
}

.vvlp-stats span {
  padding: 0.95rem;
  color: var(--vvlp-muted);
  line-height: 1.35;
}

.vvlp-stats strong {
  display: block;
  color: var(--vvlp-text);
  font-size: 1.15rem;
}

.vvlp-section-head {
  margin-bottom: clamp(1.8rem, 4vw, 3rem);
}

.vvlp-before-after,
.vvlp-channel-grid,
.vvlp-demo-grid,
.vvlp-feature-grid,
.vvlp-api-grid,
.vvlp-benefit-grid {
  display: grid;
  gap: 1rem;
}

.vvlp-before-after {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.vvlp-before-after > div,
.vvlp-feature-grid > div,
.vvlp-api-grid > div,
.vvlp-benefit-grid > div {
  padding: clamp(1.1rem, 2vw, 1.5rem);
}

.vvlp ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--vvlp-muted);
  line-height: 1.65;
}

.vvlp-channel-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.vvlp-channel {
  min-height: 132px;
  padding: 1.15rem;
  transition: transform 180ms ease, border-color 180ms ease;
}

.vvlp-channel:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 204, 61, 0.6);
}

.vvlp-channel span,
.vvlp-demo-card > span {
  display: inline-flex;
  margin-bottom: 0.7rem;
  color: var(--vvlp-accent);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.vvlp-channel strong,
.vvlp-channel small {
  display: block;
}

.vvlp-channel small {
  margin-top: 0.45rem;
  color: var(--vvlp-muted);
  line-height: 1.45;
}

.vvlp-image-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.vvlp-image-grid img,
.vvlp-screen-grid img,
.vvlp-zalo-proof img,
.vvlp-qr img {
  width: 100%;
  border: 1px solid var(--vvlp-line);
  border-radius: 8px;
  background: var(--vvlp-panel);
}

.vvlp-demo-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.vvlp-demo-card {
  padding: clamp(1rem, 2vw, 1.35rem);
}

.vvlp-demo-card p,
.vvlp-feature-grid p,
.vvlp-benefit-grid p,
.vvlp-api-grid span {
  color: var(--vvlp-muted);
  line-height: 1.62;
}

.vvlp-video-stack {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.vvlp-video-stack video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  background: #000;
}

.vvlp-feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.vvlp-split {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.vvlp-check-list {
  background: var(--vvlp-panel);
  border: 1px solid var(--vvlp-line);
  border-radius: 8px;
  padding: 1.35rem 1.35rem 1.35rem 2.2rem;
}

.vvlp-screen-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.vvlp-api-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.vvlp-api-grid strong,
.vvlp-api-grid span {
  display: block;
}

.vvlp-api-grid strong {
  margin-bottom: 0.55rem;
}

.vvlp-benefit-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.vvlp-zalo-proof {
  max-width: 760px;
  margin-top: 1rem;
}

.vvlp-price {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  background: linear-gradient(135deg, rgba(255, 204, 61, 0.1), rgba(47, 230, 168, 0.08));
  border-top: 1px solid var(--vvlp-line);
}

.vvlp-price h2 {
  color: var(--vvlp-accent);
}

.vvlp-bank {
  display: grid;
  gap: 0.4rem;
  max-width: 420px;
  padding: 1rem;
  margin-top: 1rem;
}

.vvlp-bank span {
  color: var(--vvlp-muted);
}

.vvlp-qr img {
  background: #fff;
}

.vvlp-sticky-cta {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  max-width: calc(100vw - 2rem);
  padding: 0.85rem 1rem;
  border-radius: 8px;
  background: var(--vvlp-danger);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.34);
}

@media (max-width: 1100px) {
  .vvlp-split,
  .vvlp-price {
    grid-template-columns: 1fr;
  }

  .vvlp-feature-grid,
  .vvlp-api-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .vvlp-nav div {
    display: none;
  }

  .vvlp-hero,
  .vvlp-section {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .vvlp h1 {
    max-width: 100%;
    font-size: clamp(2.75rem, 16vw, 4rem);
  }

  .vvlp-hero::before {
    background: linear-gradient(180deg, rgba(8, 9, 13, 0.96), rgba(8, 9, 13, 0.82));
  }

  .vvlp h2 {
    max-width: 100%;
  }

  .vvlp-stats,
  .vvlp-before-after,
  .vvlp-channel-grid,
  .vvlp-image-grid,
  .vvlp-demo-grid,
  .vvlp-feature-grid,
  .vvlp-api-grid,
  .vvlp-benefit-grid,
  .vvlp-screen-grid {
    grid-template-columns: 1fr;
  }

  .vvlp-sticky-cta {
    left: 1rem;
    right: 1rem;
  }
}