.page-lo-trinh-phat-trien {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default dark text for light body background */
  background-color: var(--accent-color, #ffffff); /* Fallback to white if accent-color is not defined */
}

.page-lo-trinh-phat-trien__container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-lo-trinh-phat-trien__hero-section {
  padding-top: 10px; /* Small top padding, relying on body for header offset */
  padding-bottom: 40px;
  text-align: center;
  background: linear-gradient(135deg, #26A9E0, #36C0F0);
  color: #ffffff;
}

.page-lo-trinh-phat-trien__main-title {
  font-size: 2.8em;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-lo-trinh-phat-trien__description {
  font-size: 1.1em;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-lo-trinh-phat-trien__cta-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-lo-trinh-phat-trien__btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05em;
  transition: background-color 0.3s ease, transform 0.2s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-lo-trinh-phat-trien__btn--primary {
  background-color: #EA7C07; /* Custom color for login/primary */
  color: #ffffff;
  border: 2px solid #EA7C07;
}

.page-lo-trinh-phat-trien__btn--primary:hover {
  background-color: #d16b06;
  transform: translateY(-2px);
}

.page-lo-trinh-phat-trien__btn--secondary {
  background-color: #ffffff;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-lo-trinh-phat-trien__btn--secondary:hover {
  background-color: #f0f0f0;
  transform: translateY(-2px);
}

.page-lo-trinh-phat-trien__section {
  padding: 60px 0;
  border-bottom: 1px solid #eee;
}

.page-lo-trinh-phat-trien__section:last-of-type {
  border-bottom: none;
}

.page-lo-trinh-phat-trien__section--intro {
  background-color: #f9f9f9;
}

.page-lo-trinh-phat-trien__section-title {
  font-size: 2.2em;
  color: #26A9E0;
  margin-bottom: 30px;
  text-align: center;
  font-weight: 700;
}

.page-lo-trinh-phat-trien__sub-title {
  font-size: 1.8em;
  color: #333333;
  margin-top: 40px;
  margin-bottom: 20px;
  font-weight: 600;
}

.page-lo-trinh-phat-trien__text-block {
  font-size: 1.05em;
  margin-bottom: 20px;
  text-align: justify;
}

.page-lo-trinh-phat-trien__figure {
  margin: 30px auto;
  max-width: 680px;
  text-align: center;
}

.page-lo-trinh-phat-trien__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.page-lo-trinh-phat-trien__figcaption {
  font-size: 0.9em;
  color: #666;
  margin-top: 10px;
}

.page-lo-trinh-phat-trien__pillar-item {
  margin-bottom: 40px;
}

.page-lo-trinh-phat-trien__cta-buttons--bottom {
  margin-top: 40px;
  margin-bottom: 30px;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-lo-trinh-phat-trien__main-title {
    font-size: 2.4em;
  }
  .page-lo-trinh-phat-trien__section-title {
    font-size: 2em;
  }
  .page-lo-trinh-phat-trien__sub-title {
    font-size: 1.6em;
  }
  .page-lo-trinh-phat-trien__btn {
    padding: 12px 24px;
    font-size: 1em;
  }
}

@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-lo-trinh-phat-trien__hero-section {
    padding-top: 10px !important; /* Small top padding */
    padding-bottom: 30px;
  }
  .page-lo-trinh-phat-trien__main-title {
    font-size: 1.8em;
    margin-bottom: 15px;
  }
  .page-lo-trinh-phat-trien__description {
    font-size: 1em;
    margin-bottom: 25px;
    padding: 0 15px;
  }
  .page-lo-trinh-phat-trien__cta-buttons {
    flex-direction: column; /* Stack buttons vertically */
    gap: 10px;
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  .page-lo-trinh-phat-trien__btn {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 2. 单栏长文容器 */
  .page-lo-trinh-phat-trien__container {
    padding: 0 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-lo-trinh-phat-trien__section {
    padding: 40px 0;
  }
  .page-lo-trinh-phat-trien__section-title {
    font-size: 1.6em;
    margin-bottom: 20px;
  }
  .page-lo-trinh-phat-trien__sub-title {
    font-size: 1.4em;
    margin-top: 30px;
    margin-bottom: 15px;
  }
  .page-lo-trinh-phat-trien__text-block {
    font-size: 0.95em;
    margin-bottom: 15px;
  }

  /* 3. 通用图片与 figure */
  .page-lo-trinh-phat-trien img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-lo-trinh-phat-trien__figure {
    margin: 20px auto;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  .page-lo-trinh-phat-trien__figcaption {
    font-size: 0.85em;
  }

  /* 4. 按钮与按钮容器 (already covered in top-cta, but re-emphasizing for general buttons) */
  .page-lo-trinh-phat-trien__cta-buttons--bottom {
    flex-direction: column;
    gap: 10px;
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  /* 5. 注册教程与 FAQ 区块 (N/A for this page, but structure for completeness) */
  /* No specific FAQ/registration tutorial sections on this page, but general text blocks and titles are covered */
}