:root {
  --background: #0b1220;
  --panel: #111c2e;
  --border: #26364d;
  --text: #f4f7fb;
  --muted: #9baac0;
  --blue: #4388ff;
  --blue-hover: #2d73ed;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--background);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

.navbar {
  min-height: 76px;
  padding: 0 7%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  text-decoration: none;
  font-size: 19px;
  font-weight: 700;
}

.brand-icon {
  width: 37px;
  height: 37px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--blue);
  color: white;
  font-size: 21px;
}

.nav-label {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 1.4px;
}

main {
  flex: 1;
}

.hero {
  width: min(680px, 90%);
  margin: 0 auto;
  padding: 76px 0 64px;
  text-align: center;
}

.app-icon {
  width: 82px;
  height: 82px;
  margin: 0 auto 28px;
  display: grid;
  place-items: center;
  border: 1px solid #34517a;
  border-radius: 23px;
  background: #132440;
  color: #70a8ff;
}

.app-icon svg {
  width: 51px;
  height: 51px;
}

.eyebrow {
  color: #75aaff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
}

h1 {
  margin: 18px 0;
  font-size: clamp(34px, 6vw, 53px);
  letter-spacing: -1.8px;
  line-height: 1.15;
}

h1 span {
  color: #70a5ff;
}

.description {
  max-width: 520px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.download-card {
  margin: 38px auto 0;
  padding: 25px;
  border: 1px solid var(--border);
  border-radius: 17px;
  background: var(--panel);
  text-align: left;
}

.file-info {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 23px;
}

.windows-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border-radius: 12px;
  background: #1b2e49;
  color: #8bb8ff;
  font-size: 31px;
}

.file-info h2 {
  margin: 0 0 7px;
  font-size: 16px;
}

.file-info p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.download-button {
  min-height: 55px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  border-radius: 10px;
  background: var(--blue);
  color: white;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  transition: background 0.2s;
}

.download-button:hover {
  background: var(--blue-hover);
}

.download-button:focus-visible {
  outline: 3px solid white;
  outline-offset: 3px;
}

.download-button svg {
  width: 21px;
  height: 21px;
}

.download-message {
  min-height: 15px;
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.features {
  margin-top: 29px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 13px 25px;
  color: #c5d0e0;
  font-size: 13px;
}

.features span {
  margin-right: 5px;
  color: #6da5ff;
}

.notice {
  margin: 32px auto 0;
  color: #8392a9;
  font-size: 12px;
  line-height: 1.7;
}

footer {
  padding: 23px 7%;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  border-top: 1px solid var(--border);
  color: #8291a8;
  font-size: 12px;
}

@media (max-width: 520px) {
  .navbar {
    padding: 0 5%;
  }

  .brand {
    font-size: 16px;
  }

  .nav-label {
    font-size: 9px;
    letter-spacing: 0.7px;
  }

  .hero {
    padding-top: 55px;
  }

  .download-card {
    padding: 18px;
  }

  .file-info {
    align-items: flex-start;
  }

  .features {
    flex-direction: column;
    align-items: center;
  }

  footer {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}