.vault-body {
  background: var(--paper);
}

.vault-site-header {
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.vault-main {
  overflow: hidden;
}

.vault-hero {
  position: relative;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(300px, 0.7fr) minmax(520px, 1.3fr);
  gap: clamp(28px, 4vw, 68px);
  align-items: center;
  padding: 112px clamp(24px, 5vw, 72px) 56px;
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 68px 68px;
}

.vault-hero-copy {
  position: relative;
  z-index: 2;
  max-width: 540px;
}

.vault-hero h1 {
  display: flex;
  flex-wrap: wrap;
  gap: 0.08em 0.28em;
  align-items: baseline;
  max-width: 620px;
  margin: 0 0 30px;
  font-size: clamp(3.4rem, 5.8vw, 6.4rem);
  line-height: 0.9;
}

.vault-wordmark-cn,
.vault-wordmark-en {
  display: inline-block;
}

.vault-wordmark-cn {
  color: var(--green);
  font-size: 0.78em;
  font-weight: 700;
}

.vault-wordmark-en {
  font-size: 0.68em;
}

.vault-lead {
  max-width: 430px;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: clamp(1.65rem, 2.7vw, 2.65rem);
  font-weight: 700;
  line-height: 1.2;
}

.vault-summary {
  max-width: 480px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.vault-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.vault-platform {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.vault-product-scene {
  position: relative;
  min-width: 0;
  width: 100%;
  aspect-ratio: 1.36;
  isolation: isolate;
}

.vault-window {
  position: absolute;
  overflow: hidden;
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--green) 45%, var(--line));
  background: var(--paper);
  box-shadow: 0 24px 60px color-mix(in srgb, var(--shadow) 56%, transparent);
}

.vault-window img {
  width: 100%;
  height: auto;
  display: block;
}

.vault-window-desktop {
  z-index: 1;
  top: 6%;
  right: -3%;
  width: 92%;
  transform: rotate(-1.6deg);
}

.vault-window-mobile {
  z-index: 2;
  right: 7%;
  bottom: 0;
  width: 30%;
  max-height: 76%;
  transform: rotate(1.4deg);
}

.vault-window-mobile img {
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.vault-features,
.vault-audience,
.vault-privacy,
.vault-download {
  padding: clamp(64px, 9vw, 128px) clamp(20px, 5vw, 64px);
}

.vault-section-heading {
  display: grid;
  grid-template-columns: minmax(180px, 0.34fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  margin-bottom: clamp(44px, 7vw, 84px);
}

.vault-section-heading h2,
.vault-audience h2,
.vault-privacy h2,
.vault-download h2 {
  max-width: 920px;
  font-size: clamp(2.5rem, 5.8vw, 5.4rem);
}

.vault-feature-list {
  border-top: 1px solid var(--line);
}

.vault-feature-list article {
  display: grid;
  grid-template-columns: 72px minmax(170px, 0.42fr) minmax(0, 1fr);
  gap: 24px;
  align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.vault-feature-list article > span {
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 700;
}

.vault-feature-list article p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.vault-audience {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.62fr);
  gap: clamp(40px, 8vw, 120px);
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.vault-audience ul {
  align-self: end;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.vault-audience li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.vault-privacy {
  display: grid;
  grid-template-columns: minmax(220px, 0.44fr) minmax(0, 1fr);
  gap: clamp(40px, 8vw, 120px);
  align-items: center;
  background: var(--green);
  color: #f6f7f5;
}

.vault-privacy .eyebrow,
.vault-privacy a {
  color: #f1c383;
}

.vault-privacy h2 {
  margin: 10px 0 24px;
  color: #ffffff;
}

.vault-privacy p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.8;
}

.vault-privacy a {
  display: inline-block;
  margin-top: 10px;
  border-bottom: 1px solid currentColor;
}

.vault-privacy-mark {
  color: rgba(255, 255, 255, 0.16);
  font-size: clamp(4rem, 11vw, 10rem);
  font-weight: 900;
  line-height: 0.8;
  writing-mode: vertical-rl;
}

.vault-download {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.62fr);
  gap: clamp(40px, 8vw, 120px);
  border-bottom: 1px solid var(--line);
}

.vault-download-copy {
  align-self: end;
}

.vault-download-copy > p {
  margin-bottom: 24px;
  color: var(--muted);
  line-height: 1.75;
}

.vault-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 0.78rem;
}

.vault-legal-links a:hover {
  color: var(--ink);
}

.vault-footer {
  border-top: 0;
}

@media (max-width: 1000px) {
  .vault-site-header .site-nav {
    display: none;
  }

  .vault-hero {
    grid-template-columns: 1fr;
    padding-top: 136px;
  }

  .vault-hero-copy {
    max-width: 760px;
  }

  .vault-product-scene {
    max-width: 900px;
  }
}

@media (max-width: 720px) {
  .vault-hero {
    min-height: auto;
    gap: 42px;
    padding-top: 112px;
    background-size: 44px 44px;
  }

  .vault-hero h1 {
    gap: 0.08em 0.2em;
    font-size: clamp(3rem, 15vw, 5rem);
  }

  .vault-product-scene {
    aspect-ratio: 1.05;
  }

  .vault-window-desktop {
    top: 3%;
    right: -24%;
    width: 120%;
  }

  .vault-window-mobile {
    right: 2%;
    width: 38%;
  }

  .vault-section-heading,
  .vault-audience,
  .vault-privacy,
  .vault-download {
    grid-template-columns: 1fr;
  }

  .vault-feature-list article {
    grid-template-columns: 42px 1fr;
  }

  .vault-feature-list article p {
    grid-column: 2;
  }

  .vault-privacy-mark {
    writing-mode: initial;
  }
}