/* 大图封面 */

.hero-section {

    position: relative;

    background: url('./images/BG14.jpg') center/cover no-repeat;

    height: 100vh;

    display: flex;

    align-items: center;

    justify-content: center;

}



.hero-overlay {

    text-align: center;

    color: #2C3E50;

    /* background: rgba(0, 0, 0, 0.45); */

    /* padding: 2rem 4rem; */

    border-radius: 12px;

    /* backdrop-filter: blur(8px); */

    color: black;

}

.hero-section::after {

    content: "";

    position: absolute;

    bottom: 0;

    left: 0;

    width: 100%;

    height: 100px;

    background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, #ffffff 100%);

    z-index: 2;

}



.hero-overlay h1 {

    font-size: 3rem;

    margin-bottom: -1rem;

    letter-spacing: 2px;

}



.hero-overlay p {

    font-size: 1.7rem;

    opacity: 0.9;

}

.scroll-button {

    background-color: rgba(255, 255, 255, 0.15);

    color: black;

    padding: 0.8rem 1.6rem;

    border: 1px solid black;

    border-radius: 30px;

    font-size: 1rem;

    cursor: pointer;

    backdrop-filter: blur(4px);

    transition: all 0.3s ease;

    display: inline-flex;

    align-items: center;

    gap: 0.5rem;

}



.scroll-button:hover {

    background-color: rgba(255, 255, 255, 0.25);

    transform: translateY(-2px);

}



.scroll-button .arrow {

    display: inline-block;

    transition: transform 0.3s;

}



.scroll-button:hover .arrow {

    transform: translateX(6px);

}

/* 视频容器样式 */

.video-section {

    background: #fff;

    /* padding: 3rem 2rem; */

    display: flex;

    justify-content: center;

}



.video-wrapper {

    width: 100%;

    max-width: 960px;

    border-radius: 16px;

    overflow: hidden;

    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);

}



.video-wrapper video {

    width: 100%;

    height: auto;

    display: block;

    border-radius: inherit;

}



/* 内容排版 */

.intro-section {

    max-width: 960px;

    margin: 4rem auto;

    padding: 0 1rem;

    font-family: 'Segoe UI', sans-serif;

    color: #222;

    line-height: 1.7;

}

.intro-title {

    display: flex;

    flex-direction: column;

    align-items: flex-start;

    justify-content: flex-start;

}

.intro-title h1{

    font-size: 2.3rem;

    margin: 0;

}

.intro-section h2,

.intro-section h3 {

    color: #005da7;

    margin-top: 2rem;

    border-left: 4px solid #005da7;

    padding-left: 1rem;

}

.intro-section p {

    margin-bottom: 10px;

}

.intro-section ul {

    padding-left: 1.5rem;

    list-style-type: disc;

    /* margin-top: 1rem; */

}