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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #000;
    color: #fff;
    overflow-x: hidden;
    font-size: 16px;
}

/* 导航菜单样式 */
/* 视频背景区域 */
.video-box {
    position: relative;
    height: 100vh;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    overflow: hidden;
}

.video-box .video-background {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 800px;
}

.layer {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
    /* backdrop-filter: blur(2px); 微信浏览器不支持 */
}

.layer img {
    position: absolute;
    top: 4vh;
    left: 6vw;
    height: 5vw;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    transition: all 0.3s ease;
}

.layer img:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* 标语样式 */
.slogan {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 900px;
    color: white;
    text-align: center;
}

.slogan .subtitle {
    font-weight: 300;
    font-size: 24px;
    letter-spacing: 12px;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeInUp 1s ease 0.3s forwards;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.slogan .title {
    font-weight: 700;
    font-size: clamp(36px, 6vw, 72px);
    margin-bottom: 30px;
    line-height: 1.3;
    letter-spacing: 8px;
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    background: linear-gradient(135deg, #fff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 动画定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate(-50%, 30px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    padding: 10vh 0 6vh;
    position: relative;
    overflow: hidden;
}

/* 页脚背景装饰 */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
}

.footer::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

/* 背景光晕 */
.footer-bg-glow {
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.footer-top {
    margin-bottom: 5vh;
}

.container {
    max-width: 90%;
    margin: 0 auto;
    padding: 0 3vw;
}

.single-widget {
    padding: 3vw;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.5vw;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.single-widget::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.single-widget:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-0.5vw);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(255, 255, 255, 0.05);
}

.single-widget:hover::before {
    opacity: 1;
}

.single-widget h2 {
    font-size: 1.8vw;
    font-weight: 600;
    margin-bottom: 2.5vh;
    color: #fff;
    position: relative;
    padding-bottom: 1.5vh;
    z-index: 1;
}

.single-widget h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 4vw;
    height: 0.3vw;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 0.3vw;
    transition: width 0.3s ease;
}

.single-widget:hover h2::after {
    width: 6vw;
}

.footer-logo h2 {
    font-size: 3vw;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #667eea;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2vh;
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.3);
    position: relative;
    z-index: 1;
}

.footer-logo h2::after {
    display: none;
}

.single-widget p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2vw;
    line-height: 1.8;
    margin-bottom: 2vh;
}

.single-widget .button a {
    display: inline-block;
    padding: 1.2vh 3.5vw;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 2.5vw;
    font-weight: 500;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.single-widget .button a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.single-widget .button a:hover::before {
    left: 100%;
}

.single-widget .button a:hover {
    transform: translateY(-0.3vw);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.social-icon {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.social-icon li {
    margin-bottom: 0;
}

.social-icon a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 1.2vw;
    display: flex;
    align-items: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1.5vh 1.5vw;
    border-radius: 1vw;
    position: relative;
    z-index: 1;
}

.social-icon a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, #667eea, #764ba2);
    border-radius: 1vw 0 0 1vw;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.social-icon a:hover {
    color: white;
    background: rgba(102, 126, 234, 0.15);
    transform: translateX(0.5vw);
    padding-left: 2vw;
}

.social-icon a:hover::before {
    opacity: 1;
}

.social-icon i {
    margin-right: 1.2vw;
    width: 2.5vw;
    text-align: center;
    font-size: 1.5vw;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.social-icon a:hover i {
    transform: scale(1.1);
}

.list {
    list-style: none;
}

.list li {
    margin-bottom: 2vh;
    font-size: 1.2vw;
    color: rgba(255, 255, 255, 0.7);
}

.list a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1.5vh 1.5vw;
    border-radius: 1vw;
    position: relative;
    z-index: 1;
}

.list a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, #667eea, #764ba2);
    border-radius: 1vw 0 0 1vw;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.list a:hover {
    color: white;
    background: rgba(102, 126, 234, 0.15);
    transform: translateX(0.5vw);
    padding-left: 2vw;
}

.list a:hover::before {
    opacity: 1;
}

.list i {
    margin-right: 1.2vw;
    width: 2.5vw;
    text-align: center;
    font-size: 1.5vw;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.list a:hover i {
    transform: scale(1.1);
}

.copyright {
    padding-top: 6vh;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.copyright-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.copyright-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    line-height: 1.6;
}

.copyright-item {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9vw;
    letter-spacing: 0.5px;
}

.copyright-separator {
    color: rgba(255, 255, 255, 0.2);
    font-size: 1vw;
    font-weight: 300;
}

.copyright-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9vw;
    padding: 0.3rem 0.6rem;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.02);
}

.copyright-link i {
    font-size: 1rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.copyright-link:hover {
    color: white;
    background: rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
}

.copyright-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.copyright-link:hover::after {
    width: 80%;
}

/* 动画定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 网格布局 */
.layui-row {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2vw;
}

.layui-col-xs12 {
    grid-column: span 12;
}

@media (min-width: 768px) {
    .layui-col-sm6 {
        grid-column: span 6;
    }
}

@media (min-width: 992px) {
    .layui-col-md4 {
        grid-column: span 4;
    }
}

/* 响应式设计 - 手机端 */
@media (max-width: 480px) {
    .layer img {
        top: 3vw;
        left: 4vw;
        height: 6vw;
    }

    .slogan {
        width: 90%;
        padding: 0 2vw;
    }

    /* 使用原始字体大小，不进行覆盖 */

    .footer {
        padding: 6vh 0 3vh;
    }

    .container {
        padding: 0 3vw;
    }

    .layui-row {
        gap: 2vw;
    }

    .single-widget {
        padding: 3vw;
        margin-bottom: 3vh;
    }

    .single-widget h2 {
        font-size: 2.5vw;
        margin-bottom: 2vh;
    }

    .single-widget p {
        font-size: 1.5vw;
    }

    .social-icon {
        grid-template-columns: 1fr;
        gap: 1vw;
    }

    .social-icon a {
        font-size: 1.5vw;
        padding: 1.5vh 2vw;
    }

    .list li {
        font-size: 1.5vw;
    }

    .list a {
        font-size: 1.5vw;
        padding: 1.5vh 2vw;
    }

    .copyright-links {
        gap: 0.3rem 0.8rem;
    }

    .copyright-item {
        font-size: 2.5vw;
    }

    .copyright-separator {
        font-size: 3vw;
    }

    .copyright-link {
        font-size: 2.5vw;
        padding: 0.5rem 0.8rem;
    }

    .copyright-link i {
        font-size: 1.2rem;
    }
}

/* 响应式设计 - 平板端 */
@media (min-width: 481px) and (max-width: 768px) {
    .layer img {
        top: 3vw;
        left: 4vw;
        height: 5vw;
    }

    .slogan {
        width: 95%;
        padding: 0 2vw;
    }

    /* 使用原始字体大小，不进行覆盖 */

    .footer {
        padding: 6vh 0 4vh;
    }

    .single-widget {
        margin-bottom: 3vh;
        padding: 3vw;
    }

    .single-widget h2 {
        font-size: 2.5vw;
    }

    .copyright-links {
        gap: 0.5rem 1rem;
    }

    .copyright-item {
        font-size: 1.8vw;
    }

    .copyright-separator {
        font-size: 2vw;
    }

    .copyright-link {
        font-size: 1.8vw;
        padding: 0.4rem 0.7rem;
    }

    .copyright-link i {
        font-size: 1.1rem;
    }
}

/* 响应式设计 - 小屏幕笔记本 */
@media (min-width: 769px) and (max-width: 991px) {
    /* 使用原始字体大小，不进行覆盖 */
}

/* 响应式设计 - 桌面端 */
@media (min-width: 992px) and (max-width: 1199px) {
    /* 使用原始字体大小，不进行覆盖 */
}

/* 响应式设计 - 大屏幕 */
@media (min-width: 1200px) {
    .container {
        max-width: 90%;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    /* 使用原始字体大小，不进行覆盖 */
}

    .layer img {
        height: 4vw;
        top: 2vh;
    }
}

/* 页脚额外动画效果 */
@keyframes footerFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 页脚元素淡入动画 */
.footer .single-widget {
    animation: footerFadeIn 0.8s ease backwards;
}

.footer .single-widget:nth-child(1) {
    animation-delay: 0.1s;
}

.footer .single-widget:nth-child(2) {
    animation-delay: 0.3s;
}

.footer .single-widget:nth-child(3) {
    animation-delay: 0.5s;
}

/* 背景光晕动画 */
@keyframes glowPulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.footer::after {
    animation: glowPulse 8s ease-in-out infinite;
}