/* app.css — 仅作用于 .app 包裹的内容，不影响 header/footer */

/* ── #app-intro-6 ── */
.app #app-intro-6 {
  background: #f8f9fb;
}

.app .store-btn {
  display: flex;
  align-items: center;
  background: #000;
  color: #fff;
  padding: .75rem 1rem;
  border-radius: 10px;
  text-decoration: none;
  transition: .3s;
  min-width: 160px;
}

.app .store-btn i {
  font-size: 1.8rem;
  margin-right: 10px;
}

.app .store-btn:hover {
  background: #222;
}

.app .store-btn .btn-text small {
  font-size: .75rem;
  line-height: 1;
}

.app .store-btn .btn-text strong {
  font-size: 1rem;
}

.app .intro6-iconbox {
  background: #fff;
  padding: 1.2rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .05);
  transition: .3s;
}

.app .intro6-iconbox:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, .08);
}

/* ── #mission-1 ── */
.app #mission-1 h2 {
  font-size: 1.75rem;
}

/* ── #update-4 ── */
.app #update-4 h2 {
  color: #212529;
  font-size: 1.8rem;
}

.app .version-block {
  background-color: #f8f9fa;
  border-left: 5px solid #007bff;
  transition: .3s;
}

.app .version-block:hover {
  box-shadow: 0 1rem 1.5rem rgba(0, 0, 0, .05);
  border-left-color: #0056b3;
  transform: translateY(-3px);
}

.app .version-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #000;
}

.app .version-body p {
  margin-bottom: .75rem;
  line-height: 1.6;
}

/* ── #welcome-1 ── */
.app #welcome-1 {
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.app .welcome-1-overlay {
  background: rgba(0, 0, 0, .5);
  padding: 3rem 1rem;
}

.app .welcome-1-card {
  max-width: 600px;
  backdrop-filter: blur(8px);
  background: rgba(0, 0, 0, .4);
  border: 1px solid rgba(255, 255, 255, .1);
}

.app #welcome-1 h2 {
  font-size: 1.5rem;
}

.app #welcome-1 p {
  font-size: .95rem;
}

.app #welcome-1 .btn {
  font-size: 1rem;
}