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

html, body {
    overflow-x: auto;
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
}

.carousel-dots {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1001;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background-color: #000000;
    transform: scale(1.2);
}

.carousel-wrapper {
    position: relative;
    width: 100%;
    z-index: 1;
}

.carousel-wrapper.is-transitioning {
    transition: transform 0.6s ease-in-out;
}

.carousel-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.carousel-wrapper.slide-down {
    transform: translateY(-100vh);
}

.carousel-wrapper.slide-down-2 {
    transform: translateY(-200vh);
}

.carousel-wrapper.slide-down-3 {
    transform: translateY(-300vh);
}

.carousel-wrapper.slide-up {
    transform: translateY(0);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/one.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    animation: zoomAnimation 20s ease-in-out infinite;
}

@keyframes zoomAnimation {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6));
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.navbar:hover {
    background-color: rgba(255, 255, 255, 0.98);
}

.navbar:hover .nav-link {
    color: #000000;
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    height: 80px;
}

.logo-link {
    position: absolute;
    left: 150px;
    top: 50%;
    transform: translateY(-50%);
    display: inline-block;
}

.logo {
    height: 45px;
    width: auto;
    object-fit: contain;
    display: block;
}

.logo-hover {
    display: none;
}

.navbar:hover .logo-default {
    display: none;
}

.navbar:hover .logo-hover {
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    margin-right: 40px;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: block;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 20px;
    right: 20px;
    height: 2px;
    background-color: #ffffff;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.navbar:hover .nav-link::after {
    background-color: #000000;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-item-has-children {
    position: relative;
}

.dropdown-arrow {
    display: inline-block;
    margin-left: 6px;
    font-size: 12px;
    transition: transform 0.3s ease;
}

.nav-item-has-children:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* 高级二级菜单样式 */
.sub-menu {
    position: absolute;
    top: calc(100% + 15px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    min-width: 200px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 249, 250, 0.98) 100%);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    list-style: none;
    padding: 8px;
    border-radius: 16px;
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.12),
        0 2px 10px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 2000;
}

/* 菜单顶部小箭头 */
.sub-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid rgba(255, 255, 255, 0.98);
    filter: drop-shadow(0 -2px 4px rgba(0, 0, 0, 0.05));
}

.nav-item-has-children:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.sub-menu-item {
    padding: 0;
    margin: 2px 0;
}

.sub-menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #1a1a1a;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 14px 20px;
    border-radius: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

/* 悬停背景效果 */
.sub-menu-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #6ee7b7 0%, #10b981 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

/* 左侧装饰线 */
.sub-menu-link::after {
    content: '';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px;
    height: 20px;
    background: linear-gradient(180deg, #6ee7b7 0%, #10b981 100%);
    border-radius: 2px;
    transition: transform 0.3s ease;
}

.sub-menu-link:hover {
    color: #ffffff;
    transform: translateX(4px);
}

.sub-menu-link:hover::before {
    opacity: 1;
}

.sub-menu-link:hover::after {
    transform: translateY(-50%) scaleY(1);
}

/* 菜单项图标（可选装饰） */
.sub-menu-link:first-child::before {
    content: '';
}

/* 分隔线样式 */
.sub-menu-item + .sub-menu-item {
    position: relative;
}

.sub-menu-item + .sub-menu-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(0, 0, 0, 0.06) 20%,
        rgba(0, 0, 0, 0.06) 80%,
        transparent 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    text-align: left;
    color: #ffffff;
    padding: 180px 0 0 8%;
}

.hero-title {
    font-size: 56px;
    font-weight: 400;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 56px;
    font-weight: 400;
    max-width: 800px;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    z-index: 10;
    animation: bounce 2s infinite;
}

.scroll-indicator-up {
    color: #000000;
}

.scroll-indicator-up .scroll-mouse {
    border-color: #000000;
}

.scroll-indicator-up .scroll-wheel {
    background-color: #000000;
}

.scroll-indicator-up .scroll-text {
    color: #000000;
}

.scroll-mouse {
    width: 26px;
    height: 40px;
    border: 2px solid #ffffff;
    border-radius: 13px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    margin-bottom: 10px;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background-color: #ffffff;
    border-radius: 2px;
    animation: scrollWheel 1.5s infinite;
}

@keyframes scrollWheel {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(10px);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.scroll-text {
    color: #ffffff;
    font-size: 14px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.about-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.about-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/two.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    animation: zoomAnimation 20s ease-in-out infinite;
}

.about-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.about-content {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    text-align: left;
    color: #000000;
    padding: 0 10%;
}

.about-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 40px;
}

.about-description {
    font-size: 18px;
    line-height: 1.6;
    max-width: 900px;
    margin-bottom: 20px;
}

.about-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 50px;
    font-size: 18px;
    color: #000000;
    text-decoration: none;
    border: 2px solid #000000;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.about-button:hover {
    background-color: #000000;
    color: #ffffff;
}

.about-button:hover .arrow-icon {
    transform: translateX(5px);
}

.arrow-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

.service-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.service-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/three.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    animation: zoomAnimation 20s ease-in-out infinite;
}

.service-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.5));
}

.service-content {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #ffffff;
    padding: 0 10%;
}

.service-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.service-intro {
    font-size: 20px;
    margin-bottom: 40px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    max-width: 800px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    width: 100%;
    max-width: 1200px;
}

.service-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 30px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.service-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.service-card-number {
    font-size: 64px;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.3);
    line-height: 1;
    margin-bottom: 10px;
}

.service-card-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.service-card-subtitle {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.service-card-content p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.9);
}

.service-card-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-card-content li {
    font-size: 13px;
    line-height: 2;
    padding-left: 20px;
    position: relative;
    color: rgba(255, 255, 255, 0.85);
}

.service-card-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: rgba(255, 255, 255, 0.5);
}

.service-description {
    font-size: 18px;
    line-height: 2;
    max-width: 900px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.choose-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.choose-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/four.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    animation: zoomAnimation 20s ease-in-out infinite;
}

.choose-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6));
}

.choose-content {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #ffffff;
    padding: 0 10%;
}

.choose-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 40px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.choose-grid {
    display: flex;
    flex-direction: column;
    gap: 25px;
    width: 100%;
    max-width: 900px;
}

.choose-item {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 25px 30px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.choose-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateX(10px);
}

.choose-item-number {
    font-size: 48px;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.3);
    min-width: 60px;
    line-height: 1;
}

.choose-item-content {
    flex: 1;
    text-align: left;
}

.choose-item-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.choose-item-desc {
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
}

.site-footer {
    position: relative;
    width: 100%;
    background-color: #0f0f1a;
    color: #ffffff;
    padding: 50px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 8%;
    gap: 40px;
}

.footer-left {
    flex: 1;
}

.footer-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-intro {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-details {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
}

.footer-item {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.qrcode-image {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: #ffffff;
    padding: 6px;
}

.qrcode-text {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 10px;
}

.footer-copyright {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-beian {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.beian-link {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.3s ease;
}

.beian-link:hover {
    color: rgba(255, 255, 255, 0.8);
}

.mobile-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    z-index: 9999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
}

.mobile-warning.show {
    display: flex;
}

.mobile-warning-icon {
    font-size: 64px;
    margin-bottom: 24px;
}

.mobile-warning-title {
    font-size: 28px;
    color: #ffffff;
    margin-bottom: 16px;
    font-weight: 600;
}

.mobile-warning-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
    line-height: 1.6;
    max-width: 320px;
}

.mobile-warning-btn {
    padding: 12px 32px;
    background: #00a8ff;
    color: #ffffff;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-warning-btn:hover {
    background: #0080cc;
    transform: translateY(-2px);
}