/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #009fa8;
    --primary-dark: #007f85;
    --primary-light: #4db6be;
    --secondary-color: #f8f9fa;
    --text-dark: #333;
    --text-light: #666;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: #ffffff;
    min-height: 100vh;
}

/* 磨砂玻璃效果 */
.glass {
    background: rgba(0, 159, 168, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 159, 168, 0.1);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 159, 168, 0.1);
}

.glass-light {
    background: rgba(0, 159, 168, 0.03);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 159, 168, 0.08);
    box-shadow: 0 2px 15px rgba(0, 159, 168, 0.08);
}

.glass-dark {
    background: rgba(0, 159, 168, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 159, 168, 0.15);
    box-shadow: 0 6px 25px rgba(0, 159, 168, 0.12);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 40px;
    width: auto;
    transition: all 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    position: relative;
}

.nav-menu::before {
    content: '';
    position: absolute;
    bottom: -5px;
    left: var(--slider-left, 0);
    width: var(--slider-width, 0);
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: var(--slider-opacity, 0);
    transform: translateX(0);
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    display: block;
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-link.active {
    color: var(--white);
    background: var(--primary-color);
}

/* 移动端菜单 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

/* 主要内容区域 */
.main-content {
    margin-top: 80px;
    min-height: calc(100vh - 160px);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 页面标题 */
.page-title {
    text-align: center;
    padding: 4rem 0 2rem;
    color: var(--text-dark);
}

.page-title h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.8);
}

.page-title p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 卡片样式 */
.card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 159, 168, 0.1);
    border: 1px solid rgba(0, 159, 168, 0.08);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 159, 168, 0.2);
    border-color: rgba(0, 159, 168, 0.15);
}

.card.glass {
    background: rgba(0, 159, 168, 0.05);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 159, 168, 0.1);
    color: var(--text-dark);
    box-shadow: 0 4px 20px rgba(0, 159, 168, 0.1);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 159, 168, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

.btn-glass {
    background: rgba(0, 159, 168, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 159, 168, 0.2);
}

.btn-glass:hover {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: 0 6px 20px rgba(0, 159, 168, 0.3);
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* 页脚 */
.footer {
    background: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

    .menu-toggle {
        display: block;
    }

    .container {
        padding: 0 1rem;
    }

    .page-title h1 {
        font-size: 2rem;
    }

    .page-title p {
        font-size: 1rem;
    }

    .card {
        padding: 1.5rem;
    }

    .grid {
        gap: 1rem;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .logo img {
        height: 35px;
    }

    .page-title {
        padding: 2rem 0 1rem;
    }

    .page-title h1 {
        font-size: 1.8rem;
    }

    .card {
        padding: 1rem;
    }
}

/* 特殊效果 */
.floating {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 159, 168, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 159, 168, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 159, 168, 0);
    }
}