/* ����桁� */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    width: 100%;
}

/* 絲取����垸� */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: transparent;
    padding: 1vh 0;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    display: flex;
    justify-content: center;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.navbar-inner {
    width: 60%;
    display: flex;
    align-items: center;
}

.navbar-logo {
    max-width: 15vh;
    height: auto;
    margin-right: 2vh;
}

.navbar-content {
    flex-grow: 1;
    font-size: 1.2vw;
    text-align: right;
}

.navbar-button {
    color: white;
    text-decoration: none;
    margin-left: 2vh;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.navbar-button:hover {
    color: #14254c;
}

.navbar-button::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0.2vh;
    bottom: -0.5vh;
    left: 0;
    background-color: #14254c;
    transition: width 0.3s ease;
}

.navbar-button:hover::after {
    width: 100%;
}

/* �育�糸ご���桁� */
.news-header {
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.news-header-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    margin: 0;
    padding: 0;
}

.news-text {
    position: absolute;
    bottom: 35vh;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    font-size: 4.2vh;
    color: white;
    z-index: 1;
}

.scroll-down {
    position: absolute;
    bottom: 5vh;
    left: 50%;
    transform: translateX(-50%);
    width: 10vh;
    height: auto;
    z-index: 1;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.scroll-down:hover {
    transform: translateX(-50%) translateY(0.5vh);
}

/* ��絎劫����桁� */
.content-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
}

.content-text {
    font-size: 2.4vh;
    color: #b0b0b0;
    line-height: 1.8;
    margin-bottom: 0;
}

.text-spacer {
    height: 6vh;
}

/* 茹�蘂�絎劫���桁� */
.video-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
    text-align: center;
}

.content-video {
    width: 100%;
    max-width: 120vh;
    height: auto;
    border-radius: 0.8vh;
    box-shadow: 0 0.4vh 0.8vh rgba(0, 0, 0, 0.1);
}

/* 綏��上勄��絽�絮��桁� */
.image-text-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
    display: flex;
    align-items: center;
    gap: 4vh;
}

.image-text-image {
    flex: 1;
}

.content-image {
    width: 100%;
    height: auto;
    border-radius: 0.8vh;
    box-shadow: 0 0.4vh 0.8vh rgba(0, 0, 0, 0.1);
}

.image-text-content {
    flex: 1;
}

.image-text-title {
    font-size: 3.6vh;
    color: #003d83;
    margin-bottom: 4vh;
    line-height: 1.4;
}

.image-text-paragraph {
    font-size: 2.4vh;
    color: #b0b0b0;
    line-height: 1.8;
}

/* 綏����喝�上�絮��桁� */
.text-image-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
    display: flex;
    align-items: center;
    gap: 4vh;
}

.text-image-content {
    flex: 1;
}

.text-image-title {
    font-size: 3.6vh;
    color: #003d83;
    margin-bottom: 4vh;
    line-height: 1.4;
}

.text-image-paragraph {
    font-size: 2.4vh;
    color: #b0b0b0;
    line-height: 1.8;
}

.text-image-image {
    flex: 1;
}

/* 綏��上勀�上�絮��桁� */
.image-image-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
    display: flex;
    align-items: stretch;
    gap: 4vh;
}

.image-image-left, .image-image-right {
    flex: 1;
    display: flex;
    align-items: stretch;
}

.image-image-left img, .image-image-right img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0.8vh;
    box-shadow: 0 0.4vh 0.8vh rgba(0, 0, 0, 0.1);
}

/* ���上����桁� */
.single-image-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
    text-align: center;
}

.single-image-container img {
    width: 100%;
    height: auto;
    border-radius: 0.8vh;
    box-shadow: 0 0.4vh 0.8vh rgba(0, 0, 0, 0.1);
}

/* 綏�勄��絽�絮��桁� */
.text-text-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
    display: flex;
    align-items: center;
    gap: 4vh;
}

.text-text-left {
    flex: 1;
}

.text-text-right {
    flex: 2;
}

.text-text-title {
    font-size: 3.6vh;
    color: #003d83;
    line-height: 1.4;
}

.text-text-paragraph {
    font-size: 2.4vh;
    color: #b0b0b0;
    line-height: 1.8;
    margin-bottom: 0;
}

/* 菴���蕁狗�������桁� */
.back-to-top-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin: 4vh 0;
}

.back-to-top-btn {
    color: white;
    background-color: #14254c;
    padding: 1.2vh 3vh;
    border-radius: 2.5vh;
    border: none;
    font-size: 1.6vh;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    backface-visibility: hidden;
    position: relative;
    overflow: hidden;
}

.back-to-top-btn:hover {
    background-color: #1a2f5f;
    transform: scale(1.05);
}

/* 絮�筝㊤�丞��絎劫���桁� */
.center-image-container {
    width: 60%;
    margin: 0 auto;
    padding: 4vh 0;
    text-align: center;
}

.center-image-container img {
    width: 100%;
    height: auto;
    border-radius: 0.8vh;
    box-shadow: 0 0.4vh 0.8vh rgba(0, 0, 0, 0.1);
}

/* ��綺�綣顒乗� */
@media screen and (max-width: 768px) {
    .navbar-content {
        font-size: 3vw;
    }
    
    .image-text-container, .text-image-container, .image-image-container, .single-image-container, .text-text-container {
        flex-direction: column;
    }
    
    .image-text-title, .text-image-title, .text-text-title {
        font-size: 3.2vh;
    }
    
    .image-text-paragraph, .text-image-paragraph, .text-text-paragraph {
        font-size: 2vh;
    }
}

@media screen and (max-width: 480px) {
    .navbar-content {
        font-size: 4vw;
    }
}