body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #111;
  color: #fff;
}

.a1 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  background-color: #000;
  position: relative;
  z-index: 1000;
}

.a2 {
  height: 50px;
}

.a4 {
  list-style: none;
  display: flex;
  gap: 20px;
}

.a4 li a {
  text-decoration: none;
  color: #fff;
  font-weight: bold;
}

.a3 {
  display: none;
  cursor: pointer;
  font-size: 24px;
  color: #fff;
}

@media (max-width: 768px) {
  .a4 {
	display: none;
	flex-direction: column;
	background: #000;
	position: absolute;
	top: 70px;
	right: 0;
	width: 200px;
	padding: 20px;
  }

  .a4.active {
	display: flex;
  }

  .a3 {
	display: block;
  }

  .a4 li {
	margin: 10px 0;
  }
}

.b1 {
  background: url('https://stockprediction.it.com/assets/hero.jpg') no-repeat center center/cover;
  padding: 100px 20px;
  text-align: center;
}

.b1 h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.b1 p {
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.c1 {
  background-color: #e91e63;
  color: white;
  padding: 12px 25px;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
}

.c1:hover {
  background-color: #c2185b;
}

section {
  padding: 60px 20px;
  max-width: 900px;
  margin: 0 auto;
}

h2 {
  color: #f5f5f5;
  text-align: center;
  margin-bottom: 30px;
}

ul {
  list-style: none;
  padding: 0;
  line-height: 1.8;
}

ul li {
  margin: 10px 0;
  font-size: 1.1rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 500px;
  margin: 0 auto;
}

input, select {
  padding: 12px;
  font-size: 1rem;
  border: none;
  border-radius: 5px;
  background-color: #222;
  color: #fff;
}

.f1 {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-top: 40px;
}

.f1 img {
  width: 250px;
  border-radius: 8px;
}

footer {
  background-color: #000;
  color: #ccc;
  text-align: center;
  padding: 20px;
}

footer a {
  color: #e91e63;
  text-decoration: none;
}

.h1 {
  margin-top: 40px;
  text-align: center;
}

.h1 a {
  color: #00e676;
  font-size: 1.1rem;
  text-decoration: underline;
}

.i1 {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  justify-content: center;
  align-items: center;
}

.i2 {
  background-color: #222;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  color: #fff;
}

.i2 button {
  margin-top: 15px;
  background: #e91e63;
  border: none;
  padding: 10px 20px;
  color: #fff;
  border-radius: 5px;
}

#cookieNotice {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #222;
  padding: 15px;
  text-align: center;
  z-index: 9999;
  color: #fff;
}
.i2 a {
  color: #00e676; /* 可自定义颜色，比如绿色 */
  text-decoration: underline;
  font-weight: bold;
}

.i2 a:hover {
  color: #66ffa6; /* 鼠标悬停时颜色变化 */
}