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

.page-doi-tac {
  font-family: 'Arial', sans-serif;
  color: var(--text-main-color);
  background-color: var(--bg-color);
  line-height: 1.6;
  font-size: 18px;
}

.page-doi-tac a {
  text-decoration: none;
  color: var(--gold-color);
}

.page-doi-tac a:hover {
  color: var(--glow-color);
}

.page-doi-tac__article-wrap {
  max-width: 1150px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

/* Hero Section */
.page-doi-tac__hero-section {
  padding-top: 10px; /* Small top padding, relying on body padding for header offset */
  padding-bottom: 40px;
  text-align: center;
  overflow: hidden;
}

.page-doi-tac__hero-image-wrap {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  margin-bottom: 30px;
}

.page-doi-tac__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.page-doi-tac__hero-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-doi-tac__main-title {
  font-size: clamp(2em, 4vw, 3.5em); /* Use clamp for H1 */
  font-weight: bold;
  color: var(--text-main-color);
  margin-bottom: 20px;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.page-doi-tac__description {
  font-size: 1.1em;
  color: var(--text-secondary-color);
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-doi-tac__cta-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.page-doi-tac__cta-buttons--center {
  margin-top: 40px;
}

.page-doi-tac__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 30px;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 180px;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-doi-tac__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main-color);
  border: none;
  box-shadow: 0 4px 15px rgba(34, 199, 104, 0.4);
}

.page-doi-tac__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 199, 104, 0.6);
}

.page-doi-tac__btn-secondary {
  background: transparent;
  color: var(--gold-color);
  border: 2px solid var(--gold-color);
  box-shadow: 0 2px 8px rgba(242, 193, 78, 0.2);
}

.page-doi-tac__btn-secondary:hover {
  background: var(--gold-color);
  color: var(--bg-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(242, 193, 78, 0.4);
}

/* General Section Styles */
.page-doi-tac__section {
  padding: 60px 0;
}

.page-doi-tac__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  color: var(--text-main-color);
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
  line-height: 1.3;
}

.page-doi-tac__image-content {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 30px auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-doi-tac p {
  margin-bottom: 20px;
  color: var(--text-secondary-color);
}

/* Feature Grid */
.page-doi-tac__feature-grid,
.page-doi-tac__benefits-grid,
.page-doi-tac__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}