body {
    overflow-x: hidden;
}

/* 加载动画 */
.page-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 9999;
    animation: fadeOut 3.0s;
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Header */
header {
    width: 100vw;
    height: 100vh;
    background-position: bottom;
    background-size: cover;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

.header_content {
    margin-bottom: 10.25em;
    text-align: center;
}

.video_body {
    width: 100%;
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video_body video {
    position: absolute;
    top: 0;
    left: 0;
    object-fit: cover;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.4;
}

.content {
    position: absolute;
    left: 50%;
    /*保证文字内容始终居中*/
    transform: translate(-50%, -30%);
    width: 100%;
    height: 100%;
}

.content h2 {
    font-size: 6vmin;
    font-weight: 400;
    margin: 0 0 0;
}

.line {
    width: 150px;
    height: 4px;
    background: #e44c65;
    margin: 0.65em auto;
    border-radius: 4px;
}

.content h1 {
    font-size: 7vmin;
    margin: 1.25em 0 0.75em;
}

.col a,
.header_content a,
.explore_content a {
    text-align: center;
    border-radius: 50px;
}

/* Events */
section {
    width: 100%;
    padding: 4.75em 2.25em 2.25em 2.25em;
}

.title {
    text-align: center;
    font-size: 4vmin;
    font-weight: 400;
}

.row {
    display: flex;
    width: 100%;
    margin: 0 0 0 0;
    justify-content: space-between;
}

.row .col {
    display: flex;
    width: 50%;
    flex-direction: column;
    align-items: center;
    padding: 2.25em 2.25em 0;
}

.col img {
    width: 70%;
    height: 320px;
}

.col h4 {
    font-size: 3vmin;
    padding: 0.65em 0 0;
}

.col p {
    padding: 0 1.25em;
}

/* Explore */
#explore {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    padding: 4.75em 0 2.25em 0;
}

.explore_img {
    width: 100%;
    height: 100vh;
    margin-top: -38px;
}

.explore_img img {
    position: absolute;
    object-fit: cover;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.4;
}

.explore_content {
    width: 70%;
    padding: 1.25em 0 0 2.25em;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 1;
}

.explore_content h1 {
    font-size: 6vmin;
    line-height: 60px;
    margin: 0.75em 0 0 0;
}

.explore_content .line {
    margin-bottom: 1.45em;
}

.explore_content p {
    padding: 0 0 0 1.25em;
}

/* Tours */
#tours .img_gallery {
    display: flex;
    flex-wrap: wrap;
    width: 100%;
    align-items: center;
    justify-content: center;
}

.content_col {
    width: 40%;
}

.content_col h1 {
    font-size: 6vmin;
    line-height: 60px;
    margin: 1.25em 0 0 0;
}

.content_col p {
    padding: 0;
    margin: 1.25em auto;
}

.image_col {
    width: 60%;
}

.img_gallery {
    padding: 0 0 2.25em 0;
}

.img_gallery img {
    max-width: 250px;
    height: 200px;
    margin: 0.75em;
}

/* ========== 移动端适配 ========== */
@media only screen and (max-width: 1024px) {
    .content h2 {
        font-size: 5vmin;
    }
    .content h1 {
        font-size: 6vmin;
        margin: 1em 0 0.5em;
    }
    .explore_content {
        width: 85%;
    }
    .explore_content h1 {
        font-size: 5vmin;
    }
    .content_col h1 {
        font-size: 5vmin;
    }
}

@media only screen and (max-width: 850px) {

    /* Header */
    header {
        height: 70vh;
    }
    .header_content {
        margin-bottom: 6em;
    }
    .content h2 {
        font-size: 4vmin;
    }
    .content h1 {
        font-size: 5vmin;
    }
    .content a.button {
        font-size: 13px;
        padding: 0.5em 1.5em;
    }

    /* Events */
    .row {
        flex-direction: column;
    }

    .row .col {
        width: 100%;
        margin: 0.75em auto;
    }

    .col img {
        max-width: 70%;
        height: auto;
        max-height: 250px;
    }

    .col h4 {
        font-size: 4vmin;
    }

    .col p {
        text-align: center;
        padding: 0 0.5em;
    }

    /* Explore */
    #explore {
        flex-direction: column;
        height: auto;
        padding: 2em 0 2em 0;
    }
    .explore_content {
        width: 100%;
        padding: 1em 1.5em;
    }
    .explore_content h1 {
        font-size: 4vmin;
        line-height: 1.4;
    }
    .explore_img {
        height: 40vh;
        margin-top: 1em;
    }

    /* Tours */
    #tours .row {
        flex-direction: column;
    }
    #tours .col {
        text-align: center;
        width: 100%;
    }
    .content_col {
        width: 100%;
    }
    .image_col {
        width: 100%;
    }
    .content_col .line {
        margin: 0.65em auto;
    }
    .content_col h1 {
        font-size: 4vmin;
        margin: 0.5em 0 0 0;
    }
    .img_gallery {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    .img_gallery img {
        max-width: 45%;
        height: auto;
        margin: 0.5em;
    }

    /* Footer */
    #footer {
        padding: 3em 1em;
    }
    #footer .copyright {
        font-size: 12px;
    }
}

@media only screen and (max-width: 480px) {
    header {
        height: 60vh;
    }
    .header_content {
        margin-bottom: 4em;
    }
    .content h2 {
        font-size: 3.5vmin;
    }
    .content h1 {
        font-size: 4vmin;
    }
    .content a.button {
        font-size: 11px;
    }

    section {
        padding: 3em 1em 1.5em 1em;
    }

    .title h1 {
        font-size: 5vmin;
    }

    .col img {
        max-width: 85%;
        max-height: 200px;
    }

    .explore_content h1 {
        font-size: 3.5vmin;
    }

    .explore_img {
        height: 30vh;
    }

    .img_gallery img {
        max-width: 80%;
        margin: 0.4em;
    }

    #footer {
        padding: 2em 0.5em;
    }
}

/* Animations */
.col img,
.img_gallery img {
    cursor: pointer;
    opacity: 0.6;
    border-radius: 4px;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.75);
    transition: all 0.3s ease-in-out;
}

.col img:hover,
.img_gallery img:hover {
    opacity: 1;
    transform: scale(1.1);
}