.page-ththao {
  font-family: 'Arial', sans-serif;
  color: var(--text-main);
  background-color: var(--deep-navy);
  line-height: 1.6;
}

.page-ththao__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-ththao__section {
  padding: 60px 0;
  text-align: center;
}

.page-ththao__section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-ththao__section-description {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 40px;
}

/* HERO Section */
.page-ththao__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, body handles header offset */
  background: linear-gradient(180deg, #113B7A 0%, #08162B 100%);
}

.page-ththao__hero-container {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-ththao__hero-image {
  width: 100%;
  margin-bottom: 30px;
}

.page-ththao__hero-image img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.page-ththao__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}

.page-ththao__main-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-ththao__description {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 900px;
  margin: 0 auto 30px;
}

.page-ththao__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-ththao__cta-button {
  display: inline-block;
  padding: 15px 40px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: none;
  white-space: normal;
  word-wrap: break-word;
}

.page-ththao__cta-button:hover {
  background: linear-gradient(180deg, #1144A6 0%, #2B73F6 100%);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-ththao__cta-button--secondary {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  box-shadow: none;
}

.page-ththao__cta-button--secondary:hover {
  background: var(--primary-color);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Feature Grid */
.page-ththao__section--features {
  background-color: var(--deep-navy);
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-ththao__feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-ththao__feature-item {
  background-color: var(--card-b-g);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
}

.page-ththao__feature-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.page-ththao__feature-item img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
  object-fit: cover;
}

.page-ththao__feature-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-ththao__feature-text {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Sports Types Section */
.page-ththao__section--sports-types {
  background-color: var(--deep-navy);
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-ththao__dark-section {
  background-color: var(--deep-navy);
  color: var(--text-main);
}

.page-ththao__sports-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-ththao__sports-card {
  background-color: var(--card-b-g);
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
}

.page-ththao__sports-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
}

.page-ththao__sports-card img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
  object-fit: cover;
}

.page-ththao__sports-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.page-ththao__sports-text {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Promotions Section */
.page-ththao__section--promotions {
  background-color: var(--deep-navy);
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-ththao__promotion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-ththao__promotion-card {
  background-color: var(--card-b-g);
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
}

.page-ththao__promotion-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
}

.page-ththao__promotion-card img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
  object-fit: cover;
}

.page-ththao__promotion-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.page-ththao__promotion-text {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.page-ththao__btn-primary {
  display: inline-block;
  padding: 12px 25px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: #ffffff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
  border: none;
  white-space: normal;
  word-wrap: break-word;
}

.page-ththao__btn-primary:hover {
  background: linear-gradient(180deg, #1144A6 0%, #2B73F6 100%);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* How To Section */
.page-ththao__section--how-to {
  background-color: var(--deep-navy);
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-ththao__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-ththao__step-item {
  background-color: var(--card-b-g);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
}

.page-ththao__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: #ffffff;
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-ththao__step-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.page-ththao__step-text {
  font-size: 16px;
  color: var(--text-secondary);
}

.page-ththao__cta-center {
  margin-top: 60px;
}

/* FAQ Section */
.page-ththao__section--faq {
  background-color: var(--deep-navy);
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-ththao__faq-list {
  margin-top: 50px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

details.page-ththao__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--card-b-g);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

details.page-ththao__faq-item summary.page-ththao__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}

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

details.page-ththao__faq-item summary.page-ththao__faq-question:hover {
  background: rgba(var(--primary-color-rgb), 0.1);
}

.page-ththao__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-main);
}

.page-ththao__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
}

details.page-ththao__faq-item .page-ththao__faq-answer {
  padding: 0 25px 20px;
  background: rgba(var(--primary-color-rgb), 0.05);
  border-radius: 0 0 10px 10px;
  color: var(--text-secondary);
  font-size: 16px;
  text-align: left;
}

/* CTA Bottom Section */
.page-ththao__section--cta-bottom {
  background-color: var(--deep-navy);
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-ththao__cta-card {
  background: linear-gradient(135deg, #113B7A 0%, #1D5FD1 100%);
  border-radius: 15px;
  padding: 50px 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  max-width: 1000px;
  margin: 0 auto;
  color: #ffffff;
}

.page-ththao__cta-card .page-ththao__section-title {
  color: #ffffff;
  margin-bottom: 15px;
}

.page-ththao__cta-card .page-ththao__section-description {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
}

.page-ththao__cta-button--large {
  padding: 18px 50px;
  font-size: 20px;
  border-radius: 10px;
  background: linear-gradient(180deg, #F2C14E 0%, #E0A800 100%);
  color: #113B7A;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-ththao__cta-button--large:hover {
  background: linear-gradient(180deg, #E0A800 0%, #F2C14E 100%);
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-ththao__section-title {
    font-size: 32px;
  }
  .page-ththao__section-description {
    font-size: 17px;
  }
  .page-ththao__feature-item, .page-ththao__sports-card, .page-ththao__promotion-card, .page-ththao__step-item {
    padding: 25px;
  }
}

@media (max-width: 768px) {
  .page-ththao__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-ththao__hero-image img {
    border-radius: 8px;
  }
  .page-ththao__main-title {
    font-size: clamp(24px, 6vw, 36px);
  }
  .page-ththao__description {
    font-size: 16px;
    margin-bottom: 25px;
  }
  .page-ththao__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-ththao__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    padding: 14px 25px;
    font-size: 16px;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-ththao__section {
    padding: 40px 0;
  }
  .page-ththao__section-title {
    font-size: 28px;
  }
  .page-ththao__section-description {
    font-size: 15px;
    margin-bottom: 30px;
  }
  .page-ththao__feature-grid, .page-ththao__sports-grid, .page-ththao__promotion-grid, .page-ththao__steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 30px;
  }
  .page-ththao__feature-item img, .page-ththao__sports-card img, .page-ththao__promotion-card img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-ththao__feature-title, .page-ththao__sports-title, .page-ththao__promotion-title, .page-ththao__step-title {
    font-size: 20px;
  }
  .page-ththao__feature-text, .page-ththao__sports-text, .page-ththao__promotion-text, .page-ththao__step-text {
    font-size: 15px;
  }
  .page-ththao__faq-item summary.page-ththao__faq-question { padding: 15px; }
  .page-ththao__faq-qtext { font-size: 16px; }
  .page-ththao__faq-toggle { font-size: 24px; width: 24px; }
  .page-ththao__faq-answer { padding: 0 15px 15px; }
  .page-ththao__cta-card {
    padding: 40px 20px;
  }
  .page-ththao__cta-button--large {
    width: 100% !important;
    max-width: 100% !important;
    padding: 16px 30px;
    font-size: 18px;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-ththao__container {
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-ththao__section, .page-ththao__card, .page-ththao__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-ththao__btn-primary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
}

@media (max-width: 480px) {
  .page-ththao__section-title {
    font-size: 24px;
  }
  .page-ththao__main-title {
    font-size: clamp(22px, 7vw, 32px);
  }
  .page-ththao__description {
    font-size: 15px;
  }
  .page-ththao__cta-button {
    font-size: 15px;
  }
  .page-ththao__feature-title, .page-ththao__sports-title, .page-ththao__promotion-title, .page-ththao__step-title {
    font-size: 18px;
  }
  .page-ththao__step-number {
    width: 50px;
    height: 50px;
    font-size: 28px;
  }
  .page-ththao__cta-button--large {
    font-size: 16px;
  }
  .page-ththao__faq-qtext { font-size: 15px; }
}

/* Color Variables and Basic Styles */
:root {
  --primary-color: #113B7A;
  --secondary-color: #1D5FD1;
  --primary-color-rgb: 17, 59, 122;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --card-b-g: #10233F;
  --text-main: #F3F8FF;
  --text-secondary: #AFC4E8;
  --border-color: #244D84;
  --glow-color: #4FA8FF;
  --gold-color: #F2C14E;
  --divider-color: #1B3357;
  --deep-navy: #08162B;
}

.page-ththao h1, .page-ththao h2, .page-ththao h3, .page-ththao h4, .page-ththao h5, .page-ththao h6 {
  color: var(--text-main);
}

.page-ththao p {
  color: var(--text-secondary);
}

.page-ththao__light-bg {
  color: #333333; /* 浅色背景配深色文字 */
  background: #ffffff;
}

.page-ththao__medium-bg {
  color: #000000; /* 默认使用深色文字 */
  background: #1D5FD1;
}