body {
  margin: 0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  background: linear-gradient(135deg, #e3ebff 0%, #f7f8fa 60%, #e0e7ff 100%);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}
:root {
  --primary: #3a7afe;
  --primary-dark: #2253c7;
  --bg: #f7f8fa;
  --text: #1a1a1a;
  --card: rgba(255,255,255,0.78);
  --shadow: 0 8px 32px rgba(60,72,88,0.10);
  --glass-blur: blur(12px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #181c24;
    --text: #f7f8fa;
    --card: rgba(35,40,54,0.82);
  }
  body {
    background: linear-gradient(135deg, #232836 0%, #181c24 100%);
  }
}
.header {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--card);
  box-shadow: var(--shadow);
  padding: 40px 28px 28px 28px;
  border-radius: 0 0 32px 32px;
  margin-bottom: 38px;
  backdrop-filter: var(--glass-blur);
}
.header img {
  width: 90px;
  height: 90px;
  border-radius: 20px;
  box-shadow: 0 4px 24px rgba(60,72,88,0.16);
}
.header-title {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
  text-shadow: 0 2px 8px rgba(58,122,254,0.07);
  letter-spacing: 0.01em;
}
.lang-switch {
  margin-left: auto;
  display: flex;
  gap: 10px;
}
.lang-switch button {
  background: none;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  padding: 7px 18px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  font-size: 1em;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(58,122,254,0.03);
}
.lang-switch button.active, .lang-switch button:hover {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(58,122,254,0.09);
}
.main-content {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 18px 40px 18px;
}
.card {
  background: var(--card);
  box-shadow: var(--shadow);
  border-radius: 28px;
  padding: 40px 36px 36px 36px;
  margin-bottom: 40px;
  backdrop-filter: var(--glass-blur);
  animation: fadeIn 1s;
  position: relative;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
.features {
  list-style: none;
  padding: 0;
  margin: 0 0 18px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.features li {
  margin: 0;
  padding-left: 0;
  position: relative;
  display: flex;
  align-items: center;
  font-size: 1.13em;
  font-weight: 500;
  gap: 12px;
  background: none;
  border-radius: 10px;
  transition: background 0.18s;
}
.features li .feature-icon {
  font-size: 1.5em;
  margin-right: 6px;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 8px rgba(58,122,254,0.08));
}
.features li:hover {
  background: rgba(58,122,254,0.07);
}
.appstore-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 28px 0 0 0;
  padding: 18px 38px;
  background: linear-gradient(90deg, #3a7afe 0%, #2253c7 100%);
  color: #fff;
  font-size: 1.18em;
  font-weight: 800;
  border-radius: 16px;
  text-decoration: none;
  box-shadow: 0 6px 24px rgba(58,122,254,0.14);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  letter-spacing: 0.01em;
  text-align: center;
  border: none;
}
.appstore-btn:hover {
  background: linear-gradient(90deg, #2253c7 0%, #3a7afe 100%);
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 10px 32px rgba(58,122,254,0.18);
}
.appstore-btn .apple-icon {
  width: 26px;
  height: 26px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 2px;
}
.contact {
  text-align: center;
  margin-top: 38px;
  font-size: 1.13em;
}
.contact a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.contact a:hover {
  text-decoration: underline;
}
.privacy-section {
  max-width: 700px;
  margin: 38px auto 0 auto;
  padding: 0 18px 40px 18px;
}
.privacy-toggle {
  width: 100%;
  background: var(--card);
  color: var(--primary);
  border: 1.5px solid var(--primary);
  border-radius: 14px;
  font-size: 1.13em;
  font-weight: 700;
  padding: 16px 0;
  cursor: pointer;
  margin-bottom: 0;
  box-shadow: var(--shadow);
  transition: background 0.2s, color 0.2s;
}
.privacy-toggle[aria-expanded="true"], .privacy-toggle:hover {
  background: var(--primary);
  color: #fff;
}
.privacy-content {
  background: var(--card);
  box-shadow: var(--shadow);
  border-radius: 0 0 18px 18px;
  padding: 28px 26px 20px 26px;
  margin-top: 0;
  animation: fadeIn 0.3s;
  backdrop-filter: var(--glass-blur);
}
.privacy-content p {
  margin: 12px 0;
  line-height: 1.7;
}
.privacy-content a {
  color: var(--primary);
  text-decoration: underline;
}
@media (max-width: 600px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 8px 16px 8px;
    border-radius: 0 0 18px 18px;
  }
  .header img {
    width: 60px;
    height: 60px;
    border-radius: 12px;
  }
  .header-title {
    font-size: 2rem;
  }
  .main-content, .privacy-section {
    padding: 0 4vw 24px 4vw;
  }
  .card {
    padding: 20px 8vw 18px 8vw;
    border-radius: 16px;
  }
  .privacy-content {
    padding: 18px 8vw 14px 8vw;
    border-radius: 0 0 12px 12px;
  }
  .appstore-btn {
    font-size: 1em;
    padding: 12px 10vw;
    border-radius: 10px;
  }
}