:root {
  --primary-color: #11A84E;
  --secondary-color: #22C768;
  --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --card-bg: #11271B;
  --bg-primary: #08160F;
  --text-main: #F2FFF6;
  --text-secondary: #A7D9B8;
  --border-color: #2E7A4E;
  --glow: #57E38D;
  --gold: #F2C14E;
  --divider: #1E3A2A;
  --deep-green: #0A4B2C;
}

.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main); /* Text Main: #F2FFF6 */
  background: var(--bg-primary); /* Background: #08160F */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page-download__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 60px 20px;
  padding-top: 10px; /* Nhỏ hơn var(--header-offset) */
  background: var(--bg-primary); /* Background: #08160F */
  overflow: hidden; /* Ensure content doesn't overflow */
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-height: 600px; /* Limit height for aesthetic */
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 30px;
}

.page-download__hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.page-download__hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.page-download__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--gold); /* Gold: #F2C14E */
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-download__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary); /* Text Secondary: #A7D9B8 */
  margin-bottom: 40px;
}

.page-download__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
}

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 180px;
  max-width: 100%; /* Ensure button adapts to container */
  box-sizing: border-box;
  white-space: normal; /* Allow text to wrap */
  word-wrap: break-word;
}

.page-download__btn-primary {
  background: var(--button-gradient);
  color: #ffffff;
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(17, 168, 78, 0.4);
}

.page-download__btn-primary:hover {
  background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
  box-shadow: 0 6px 20px rgba(17, 168, 78, 0.6);
  transform: translateY(-2px);
}

.page-download__btn-secondary {
  background: var(--card-bg); /* Card BG: #11271B */
  color: var(--text-main); /* Text Main: #F2FFF6 */
  border: 2px solid var(--border-color); /* Border: #2E7A4E */
}

.page-download__btn-secondary:hover {
  background: var(--deep-green); /* Deep Green: #0A4B2C */
  border-color: var(--glow); /* Glow: #57E38D */
  color: var(--glow);
  transform: translateY(-2px);
}

.page-download__btn-primary--large {
  padding: 18px 35px;
  font-size: 1.2rem;
  min-width: 250px;
}

/* Video Section */
.page-download__video-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-primary); /* Background: #08160F */
}

.page-download__video-wrapper {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 30px auto 0;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
  background-color: #000;
}

.page-download__video-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  display: block;
}

.page-download__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}

/* General Section Styling */
.page-download__section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--gold); /* Gold: #F2C14E */
  margin-bottom: 20px;
  text-align: center;
  line-height: 1.3;
}

.page-download__section-description {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text-secondary); /* Text Secondary: #A7D9B8 */
  text-align: center;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__benefits-section {
  padding: 80px 20px;
  background: var(--card-bg); /* Card BG: #11271B */
  color: var(--text-main); /* Text Main: #F2FFF6 */
}

.page-download__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.page-download__benefit-card {
  background: var(--deep-green); /* Deep Green: #0A4B2C */
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--divider); /* Divider: #1E3A2A */
}

.page-download__benefit-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.page-download__benefit-icon {
  width: 150px;
  height: auto;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  border-radius: 8px;
}

.page-download__benefit-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--glow); /* Glow: #57E38D */
  margin-bottom: 15px;
}

.page-download__benefit-text {
  font-size: 1rem;
  color: var(--text-secondary); /* Text Secondary: #A7D9B8 */
}

.page-download__how-to-download {
  padding: 80px 20px;
  background: var(--bg-primary); /* Background: #08160F */
}

.page-download__download-steps {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 900px;
  margin: 0 auto;
}

.page-download__step-card {
  background: var(--card-bg); /* Card BG: #11271B */
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border: 1px solid var(--divider); /* Divider: #1E3A2A */
}

.page-download__step-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--gold); /* Gold: #F2C14E */
  margin-bottom: 15px;
}

.page-download__step-text {
  font-size: 1.05rem;
  color: var(--text-secondary); /* Text Secondary: #A7D9B8 */
  margin-bottom: 20px;
}

.page-download__step-image {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 8px;
  margin-top: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-download__cta-buttons--bottom {
  margin-top: 60px;
}

.page-download__faq-section {
  padding: 80px 20px;
  background: var(--card-bg); /* Card BG: #11271B */
  color: var(--text-main); /* Text Main: #F2FFF6 */
}

.page-download__faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.page-download__faq-item {
  background: var(--deep-green); /* Deep Green: #0A4B2C */
  border-radius: 10px;
  border: 1px solid var(--divider); /* Divider: #1E3A2A */
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main); /* Text Main: #F2FFF6 */
  cursor: pointer;
  background: var(--deep-green); /* Deep Green: #0A4B2C */
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  list-style: none; /* For details/summary */
}

.page-download__faq-item[open] > .page-download__faq-question {
  border-bottom-color: var(--divider); /* Divider: #1E3A2A */
  background-color: var(--deep-green);
}

.page-download__faq-question:hover {
  background-color: var(--deep-green); /* Slightly darker or lighter for hover */
}

.page-download__faq-item summary::-webkit-details-marker {
  display: none;
}

.page-download__faq-qtext {
  flex-grow: 1;
  text-align: left;
}

.page-download__faq-toggle {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--glow); /* Glow: #57E38D */
  margin-left: 15px;
}

.page-download__faq-answer {
  padding: 0 25px 20px;
  font-size: 1rem;
  color: var(--text-secondary); /* Text Secondary: #A7D9B8 */
  line-height: 1.7;
}

.page-download__faq-answer p {
  margin-bottom: 10px;
}

.page-download__faq-answer p:last-child {
  margin-bottom: 0;
}

.page-download__faq-answer a {
  color: var(--glow); /* Glow: #57E38D */
  text-decoration: underline;
}

.page-download__faq-answer a:hover {
  color: var(--gold); /* Gold: #F2C14E */
}


.page-download__final-cta {
  padding: 80px 20px;
  text-align: center;
  background: var(--bg-primary); /* Background: #08160F */
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-download__hero-section {
    padding: 40px 15px;
  }
  .page-download__main-title {
    font-size: clamp(2rem, 6vw, 3rem);
  }
  .page-download__subtitle {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  }
  .page-download__benefits-section,
  .page-download__how-to-download,
  .page-download__faq-section,
  .page-download__final-cta {
    padding: 60px 15px;
  }
  .page-download__section-title {
    font-size: clamp(1.8rem, 4.5vw, 2.5rem);
  }
}

@media (max-width: 768px) {
  .page-download__hero-section {
    padding: 30px 15px;
  }
  .page-download__hero-image-wrapper {
    max-height: 400px;
    margin-bottom: 20px;
  }
  .page-download__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
  }
  .page-download__subtitle {
    font-size: clamp(0.85rem, 3vw, 1rem);
    margin-bottom: 30px;
  }
  .page-download__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-download__btn-primary,
  .page-download__btn-secondary,
  .page-download a[class*="button"],
  .page-download a[class*="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;
  }
  .page-download__cta-buttons,
  .page-download__button-group,
  .page-download__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }
  .page-download__btn-primary--large {
    min-width: unset;
  }

  .page-download__video-section {
    padding: 40px 15px;
    padding-top: 10px !important; /* body đã xử lý header offset */
  }
  .page-download video,
  .page-download__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-download__video-section,
  .page-download__video-container,
  .page-download__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }

  .page-download__benefits-section,
  .page-download__how-to-download,
  .page-download__faq-section,
  .page-download__final-cta {
    padding: 40px 15px;
  }

  .page-download__benefits-grid {
    grid-template-columns: 1fr;
  }

  .page-download__benefit-card {
    padding: 25px;
  }

  .page-download__step-card {
    padding: 25px;
  }
  .page-download__step-title {
    font-size: 1.4rem;
  }
  .page-download__step-text {
    font-size: 0.95rem;
  }

  .page-download__faq-question {
    font-size: 1rem;
    padding: 18px 20px;
  }
  .page-download__faq-answer {
    padding: 0 20px 18px;
    font-size: 0.95rem;
  }
}

/* General image responsive */
.page-download img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Color contrast adjustments */
/* Assuming body background is dark (var(--bg-primary)), so text is light */
.page-download {
  color: var(--text-main); /* Text Main: #F2FFF6 */
}

.page-download__dark-bg {
  background: var(--card-bg); /* Card BG: #11271B */
  color: var(--text-main); /* Text Main: #F2FFF6 */
}

.page-download__light-bg {
  /* No explicit light-bg sections in this design, but if they existed: */
  background: #ffffff; /* Example light background */
  color: #333333; /* Dark text for light background */
}

.page-download__section-title,
.page-download__benefit-title,
.page-download__step-title {
  color: var(--gold); /* Gold for titles */
}

.page-download__subtitle,
.page-download__section-description,
.page-download__benefit-text,
.page-download__step-text,
.page-download__faq-answer {
  color: var(--text-secondary); /* Secondary text color */
}

.page-download__btn-primary {
  color: #ffffff; /* White text on gradient button */
}

.page-download__btn-secondary {
  color: var(--text-main); /* Light text on dark button */
}

.page-download__faq-toggle {
  color: var(--glow); /* Glow color for FAQ toggle */
}

.page-download__faq-answer a {
  color: var(--glow); /* Glow color for links in FAQ */
}