body {
    background: #ffffff;
    margin: 0;
    font-family: Arial, sans-serif;
}

#hero {
  background-image: url("assets/hero-bg.png");
  background-size: cover;
  background-position: center;
  height: 100vh;
  color: white;
  position: relative;
}

.hero-overlay {
  background: rgba(0, 0, 0, 0.4);
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  animation: fadeIn 1.5s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
    background-color: #28a745 !important;
    color: white !important;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.btn:hover {
    background-color: #218838 !important;
}

.btn.gold {
  background-color: #28a745;
  color: #111;
  width: 260px;
}

.btn.navy {
  background-color: #28a745;
  color: white;
  width: 220px;
}

.tagline {
  font-size: 2em;
  margin-bottom: 30px;
}

.container h1 {
  font-size: 4em;
  margin-bottom: 15px;
}


/* 第二区样式 */
#intro {
  padding: 80px 20px;
  text-align: center;
  background: linear-gradient(to bottom, #0d1c2e, #111);
  color: white;
}

#intro .container {
  max-width: 800px;
  margin: 0 auto;
}

#intro h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

#intro .description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 30px;
}

#intro .illustration {
  width: 100%;
  max-width: 500px;
  margin: 30px auto;
  display: block;
  border-radius: 12px;
}


/* 第三区样式 */
#how-it-works {
  padding: 80px 20px;
  background: linear-gradient(to bottom, #0e1a2f, #080e18);
  color: white;
  text-align: center;
}

#how-it-works .container {
  max-width: 960px;
  margin: 0 auto;
}

#how-it-works h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

#how-it-works .description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 40px;
}

#how-it-works .illustration {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  display: block;
  border-radius: 12px;
}


/* 第四区样式 */
#real-use {
  padding: 80px 20px;
  background: linear-gradient(to bottom, #0a1728, #060d14);
  color: white;
  text-align: center;
}

#real-use .container {
  max-width: 960px;
  margin: 0 auto;
}

#real-use h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

#real-use .description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 40px;
}

#real-use .illustration {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  display: block;
  border-radius: 12px;
}


/* 第五区样式 */
#join-movement {
  padding: 80px 20px;
  background: linear-gradient(to bottom, #0b1629, #070d15);
  color: white;
  text-align: center;
}

#join-movement .container {
  max-width: 960px;
  margin: 0 auto;
}

#join-movement h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

#join-movement .description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 40px;
}

#join-movement .illustration {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  display: block;
  border-radius: 12px;
}


/* 第六区样式 */
#partners {
  padding: 80px 20px;
  background: linear-gradient(to bottom, #08111d, #050a10);
  color: white;
  text-align: center;
}

#partners .container {
  max-width: 960px;
  margin: 0 auto;
}

#partners h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

#partners .description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 40px;
}

#partners .illustration {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  display: block;
  border-radius: 12px;
}


/* 第七区：Footer 样式 */
footer {
  background: #28a745;
  padding: 40px 20px;
  color: #ccc;
  text-align: center;
  font-size: 0.9em;
  margin-top: 60px;
  border-top: 1px solid #222;
}

footer a {
  color: #ddd;
  text-decoration: none;
  margin: 0 10px;
}

footer a:hover {
  text-decoration: underline;
}

/* ----------- Responsive: Mobile (max width: 768px) ----------- */
@media (max-width: 768px) {

  .hero-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .hero-buttons .btn {
    background-color: #28a745 !important;
    color: white !important;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.btn:hover {
    background-color: #218838 !important;
}


  .hero-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .hero-buttons .btn {
    background-color: #28a745 !important;
    color: white !important;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.btn:hover {
    background-color: #218838 !important;
}

  .container {
    padding: 0 16px;
  }

  .hero-overlay h1 {
    font-size: 2em;
  }

  .tagline {
    font-size: 1.2em;
    line-height: 1.4;
  }

  .btn {
    background-color: #28a745 !important;
    color: white !important;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.btn:hover {
    background-color: #218838 !important;
}

  img {
    max-width: 100%;
    height: auto;
    display: block;
  }

  section {
    padding: 40px 0;
  }
}




.hero-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
}

.hero-buttons .btn {
    background-color: #28a745 !important;
    color: white !important;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.btn:hover {
    background-color: #218838 !important;
}

.yellow-btn {
  background-color: #28a745;
  color: #000;
}

.dark-btn {
  background-color: #28a745;
  color: #fff;
}
/* 调整第一区按钮宽度和间距（移动端） */
@media (max-width: 768px) {
  .hero-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 31px;
  }

  .hero-buttons .btn {
    background-color: #28a745 !important;
    color: white !important;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.btn:hover {
    background-color: #218838 !important;
}
}