body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f6f8fa;
  color: #222;
}

.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 24px 12px;
}

.header {
  text-align: center;
  margin-bottom: 24px;
}

/* Rectangle logo style */
.logo-rect {
  display: flex;
  justify-content: center;
  align-items: center;
  border: 3px solid #2563eb;
  border-radius: 12px;
  padding: 8px;
  background: #fff;
  box-shadow: 0 2px 8px #2563eb22;
  width: fit-content;
  margin: 0 auto 10px auto;
}

/* Limit logo size, maintain aspect ratio, center it */
.logo-img {
  display: block;
  max-width: 200px;
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.header h1 {
  margin: 0;
  font-size: 2.1rem;
}

.subtitle {
  color: #555;
  font-size: 1.1rem;
}

/* Video styling */
.video-section {
  margin: 22px auto 0 auto;
  max-width: 480px;
  width: 100%;
}
.promo-video {
  width: 100%;
  border-radius: 14px;
  box-shadow: 0 2px 10px #2563eb22;
  border: 1.5px solid #2563eb33;
}

.card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 2px 10px #0001;
  padding: 24px 22px;
  margin-bottom: 28px;
}

.card h2 {
  margin-top: 0;
  margin-bottom: 10px;
  color: #2563eb;
  font-size: 1.35rem;
}

.card h3 {
  margin-top: 18px;
  margin-bottom: 7px;
  color: #1a4fb4;
  font-size: 1.1rem;
}

.card p {
  margin: 8px 0;
  line-height: 1.6;
}

.idea-form,
.subscribe-form {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.idea-form label,
.subscribe-form label {
  font-weight: 500;
  margin-bottom: 3px;
}

.idea-form textarea,
.idea-form input,
.subscribe-form input {
  font-size: 1rem;
  padding: 9px;
  border-radius: 6px;
  border: 1px solid #d1d5db;
  outline: none;
  margin-bottom: 5px;
  resize: vertical;
}

.idea-form textarea:focus,
.idea-form input:focus,
.subscribe-form input:focus {
  border-color: #2563eb;
}

.idea-form button,
.subscribe-form button {
  background: #2563eb;
  color: white;
  border: none;
  padding: 10px 0;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s;
}

.idea-form button:hover,
.subscribe-form button:hover {
  background: #1a4fb4;
}

.footer {
  text-align: center;
  color: #aaa;
  font-size: 0.96rem;
  margin: 32px 0 8px 0;
}

/* Responsive Design */
@media (max-width: 600px) {
  .container {
    padding: 10px 2px;
  }
  .card {
    padding: 16px 8px;
  }
  .header h1 {
    font-size: 1.3rem;
  }
  .logo-img {
    max-width: 90vw;
    max-height: 40px;
  }
  .video-section {
    max-width: 98vw;
  }
}