/* 全局颜色变量 */
:root {
  --primary-color: #2D3250;      /* 深邃的主色调 */
  --secondary-color: #424769;    /* 优雅的辅助色 */
  --accent-color: #676F9D;       /* 精致的点缀色 */
  --gradient-start: #F9F9F9;     /* 柔和的背景起始色 */
  --gradient-end: #F0F2F5;       /* 柔和的背景结束色 */
  --text-color: #2D3250;         /* 主文本颜色 */
  --hover-color: #1A1D2E;        /* 悬停状态颜色 */
  --card-bg: rgba(255, 255, 255, 0.97);  /* 卡片背景色 */
  --shadow-color: rgba(45, 50, 80, 0.08); /* 柔和阴影 */
  --border-radius: 20px;         /* 更大的圆角 */
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); /* 平滑过渡 */
  --card-shadow: 0 10px 30px rgba(45, 50, 80, 0.06);
  --hover-shadow: 0 20px 40px rgba(45, 50, 80, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.7);  /* 毛玻璃效果背景 */
  --glass-border: rgba(255, 255, 255, 0.2); /* 毛玻璃边框 */
}

/* 深色主题变量 */
[data-theme="dark"] {
    --primary-color: #7F8BFF;      /* 明亮的主色调 */
    --secondary-color: #5C6BC0;    /* 柔和的辅助色 */
    --accent-color: #3949AB;       /* 点缀色 */
    --gradient-start: #121212;     /* 高级黑背景起始色 */
    --gradient-end: #1E1E1E;       /* 高级黑背景结束色 */
    --text-color: #E0E0E0;         /* 文本颜色 */
    --hover-color: #9FA8FF;        /* 悬停状态颜色 */
    --card-bg: rgba(30, 30, 30, 0.97);  /* 卡片背景 */
    --shadow-color: rgba(0, 0, 0, 0.3);  /* 阴影颜色 */
    --glass-bg: rgba(25, 25, 25, 0.85);  /* 毛玻璃效果背景 */
    --glass-border: rgba(255, 255, 255, 0.08);  /* 毛玻璃边框 */
}

/* 基础样式 */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    min-height: 100vh;
}

/* 修改容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 20px;
    width: 100%;
    box-sizing: border-box;
}

.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    font-size: 1.2em;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: var(--primary-color);
    display: flex;
    align-items: center; 
    cursor: pointer; 
    transition: opacity 0.3s ease; 
    position: relative;
}

.logo:hover {
    opacity: 0.8;
}

.logo-img {
    width: 28px;
    height: 28px;
    margin-right: 10px;
    position: relative;
    top: 0; 
    transition: transform 0.3s ease;
    will-change: transform;
    backface-visibility: hidden;
    transform: translateZ(0);
}

.logo:hover .logo-img {
    transform: scale(1.1) translateZ(0);
}

/* 移除可能导致闪烁的动画效果 */
.logo-img::before,
.logo-img::after {
    display: none;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-links li {
    margin-left: 1.5rem;
}

.nav-links a {
    color: var(--primary-color);
    text-decoration: none;
    padding: 0.8rem 1.2rem;
    transition: all 0.3s ease;
    font-weight: 500;
    letter-spacing: 0.5px;
    font-size: 0.95em;
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-links a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-links a.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 4px 15px rgba(25, 118, 210, 0.2);
    transform: translateY(-2px);
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
}

/* 汉堡菜单样式 */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--text-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 移动端导航菜单 */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--card-bg);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        padding: 80px 2rem 2rem;
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px var(--shadow-color);
        border-left: 1px solid var(--glass-border);
        display: flex;
        flex-direction: column;
        align-items: center;
        z-index: 1000;
    }

    .nav-links.active {
        right: 0;
        background: var(--card-bg);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }

    .nav-links li {
        margin: 1rem 0;
        width: 100%;
        text-align: center;
}

    .nav-links a {
        display: block;
        padding: 0.8rem 1rem;
        width: 100%;
        text-align: center;
        border-radius: var(--border-radius);
        color: var(--text-color);
        transition: all 0.3s ease;
    }

    .nav-links a:hover {
        background: var(--shadow-color);
        color: var(--primary-color);
    }

    .nav-links a.active {
        background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
        color: white;
    }

    .hamburger {
        display: flex;
}

    .hamburger.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
}

    .hamburger.active span:nth-child(2) {
    opacity: 0;
}

    .hamburger.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .theme-switch-wrapper {
        margin-top: 1rem;
        width: 100%;
    }

    .theme-switch {
        width: 100%;
        height: auto;
        border-radius: var(--border-radius);
        border: 1px solid var(--glass-border);
        background: var(--glass-bg);
        padding: 0.8rem;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .theme-switch:hover {
        background: var(--shadow-color);
        transform: none;
    }
}

/* 深色模式下的移动端导航菜单 */
[data-theme="dark"] .nav-links a {
    color: var(--text-color);
}

[data-theme="dark"] .nav-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-color);
}

[data-theme="dark"] .nav-links a.active {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
}

[data-theme="dark"] .theme-switch {
    background: var(--card-bg);
    border-color: var(--glass-border);
}

[data-theme="dark"] .theme-switch:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Hero 版块高级样式 */
.hero {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-height: 55vh;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: 50px;
    padding: 2rem;
}

.hero-content {
    max-width: 1000px;
    padding: 0 20px;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

/* 高级标题效果 */
.hero h1 {
    font-size: 3.8em;
    margin: 0;
    background: linear-gradient(120deg, var(--primary-color), var(--secondary-color));
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientFlow 8s ease infinite;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    position: relative;
    display: inline-block;
    text-shadow: 0 2px 10px rgba(45, 50, 80, 0.1);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.hero h1::before {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: blur(8px);
    opacity: 0.5;
    animation: glowPulse 2s ease-in-out infinite;
    transform: translateZ(-10px);
}

/* 高级描述文本效果 */
.hero p {
    font-size: 1.3em;
    margin: 0;
    color: var(--text-color);
    opacity: 0.9;
    line-height: 1.6;
    max-width: 700px;
    animation: fadeInUp 1s ease-out 0.3s both;
    text-shadow: 0 1px 2px rgba(45, 50, 80, 0.1);
    position: relative;
}

/* 高级按钮组效果 */
.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 1rem;
    animation: fadeInUp 1s ease-out 0.6s both;
    position: relative;
}

/* 高级按钮效果 */
.hero .cta-button {
    padding: 1rem 2.5rem;
    font-size: 1.1em;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 10px 20px rgba(45, 50, 80, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.hero .cta-button:hover {
    transform: translateY(-3px) scale(1.02) rotateX(10deg);
    box-shadow: 0 15px 30px rgba(45, 50, 80, 0.2);
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

/* 高级装饰元素 */
.hero-decoration {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.08;
    filter: blur(40px);
    animation: float 6s ease-in-out infinite;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.hero-decoration:nth-child(1) {
    top: 10%;
    left: 5%;
    animation-delay: 0s;
    transform: translateZ(-100px);
}

.hero-decoration:nth-child(2) {
    bottom: 10%;
    right: 5%;
    animation-delay: -2s;
    transform: translateZ(-100px);
}

.hero-decoration:nth-child(3) {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateZ(-200px);
    width: 400px;
    height: 400px;
    opacity: 0.04;
    animation: pulse 4s ease-in-out infinite;
}

/* 高级动画关键帧 */
@keyframes gradientMove {
    0% {
        background-position: 0% 0%;
        transform: scale(1);
    }
    50% {
        background-position: 100% 100%;
        transform: scale(1.1);
    }
    100% {
        background-position: 0% 0%;
        transform: scale(1);
    }
}

@keyframes gridMove {
    0% {
        transform: perspective(1000px) rotateX(60deg) translateY(0);
    }
    100% {
        transform: perspective(1000px) rotateX(60deg) translateY(50px);
    }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.5;
        filter: blur(8px);
        transform: translateZ(-10px) scale(1);
    }
    50% {
        opacity: 0.8;
        filter: blur(12px);
        transform: translateZ(-10px) scale(1.05);
}
}

@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
        transform: translateZ(0);
    }
    50% {
        background-position: 100% 50%;
        transform: translateZ(20px);
    }
    100% {
        background-position: 0% 50%;
        transform: translateZ(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px) translateZ(0);
    }
    to {
        opacity: 1;
        transform: translateY(0) translateZ(0);
    }
}

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .hero {
        min-height: 30vh;
        padding: 2rem 1rem;
    }

    .hero h1 {
        font-size: 2.8em;
    }

    .hero p {
        font-size: 1.1em;
        padding: 0 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        padding: 0 2rem;
    }

    .hero .cta-button {
    width: 100%;
        padding: 0.9rem 2rem;
        font-size: 1em;
}

    .hero-decoration {
        width: 200px;
        height: 200px;
}

    .hero-decoration:nth-child(3) {
        width: 300px;
        height: 300px;
    }
}

/* 修改内容区域样式 */
.content-section {
    padding: 3rem 20px;
    max-width: 1200px;
    margin: 0 auto;
    background: transparent;
    color: var(--text-color);
    text-align: center !important;
    width: 100%;
    box-sizing: border-box;
    margin-top: 10px;
}

.content-section h2 {
    font-size: 1.8em;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-color);
    font-weight: 600;
}

/* 修改产品网格样式 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    width: 100%;
    box-sizing: border-box;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 修改产品卡片样式 */
.product-card {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    text-align: center;
    color: var(--text-color);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    min-height: 400px;
    cursor: pointer;
    margin: 0;
    animation: slideIn 0.6s ease-out;
    animation-fill-mode: both;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(25, 118, 210, 0.05) 0%,
        rgba(66, 165, 245, 0.05) 100%);
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--hover-shadow);
    border-color: var(--accent-color);
}

.product-card:hover::before {
    opacity: 1;
}

.product-icon {
    font-size: 2.4rem;
    margin: 1rem auto;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1.2rem;
    border-radius: 50%;
    width: 100px;
    height: 100px;
    box-shadow: 0 8px 20px rgba(45, 50, 80, 0.15);
    position: relative;
    transition: var(--transition);
    transform: translateZ(0);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.product-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 30px rgba(45, 50, 80, 0.2);
}

/* 移除图标动画效果 */
.product-icon {
    animation: none;
}

.product-icon:hover {
    animation: none;
}

/* 移除图标内部光效 */
.product-icon::after {
    display: none;
}

.product-card h3 {
    font-size: 1.4rem;
    margin: 1rem 0;
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.product-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-color);
    margin: 0.5rem 0;
    opacity: 0.9;
    transition: var(--transition);
}

.product-card .learn-more {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white !important; /* 确保文字为白色 */
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(45, 50, 80, 0.15);
    position: relative;
    overflow: hidden;
}

.product-card .learn-more::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: 0.5s;
}

.product-card .learn-more:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 50, 80, 0.25);
}

.product-card .learn-more:hover::before {
    left: 100%;
}

footer {
    background: var(--card-bg);
    color: var(--text-color);
    text-align: center;
    padding: 1rem 20px;
    font-size: 0.9em;
    line-height: 1.5;
    border-top: 1px solid var(--shadow-color);
}

footer p {
    color: var(--text-color); 
}

footer p a {
    color: var(--text-color) !important; 
    text-decoration: none;
    font-weight: 400;
    letter-spacing: 0.3px;
}

footer p a:hover {
    color: var(--hover-color) !important; 
    text-decoration: underline;
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0;
        height: 60px;
    }

    nav {
        padding: 0.4rem 15px;
        height: 100%;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        position: fixed;
        top: 60px;
        left: 0;
        background: var(--glass-bg);
        padding: 0;
        box-shadow: 0 4px 8px var(--shadow-color);
        opacity: 0;
        transform: translateY(-10px);
        transition: opacity 0.3s ease, transform 0.3s ease;
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
        opacity: 1;
        transform: translateY(0);
        background: var(--card-bg);
        backdrop-filter: blur(10px);
    }

    .nav-links li {
        margin: 0;
        text-align: center;
        padding: 0;
        width: 100%;
    }

    .nav-links a {
        color: var(--text-color);
        display: block;
        padding: 1rem;
        width: 100%;
        text-align: center;
        border-radius: 0;
    }

    .nav-links a:hover {
        background: var(--shadow-color);
        color: var(--primary-color);
    }

    .nav-links a.active {
        color: white;
        background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
        margin: 0;
        width: 100%;
        max-width: none;
    }

    .hamburger {
        display: flex;
    }

    /* 修改内容区域样式 */
    .content-section {
        margin-top: 20px;
        padding: 1rem 15px;
    }

    footer {
        padding: 0.8rem 15px;
        font-size: 0.15em;
    }

    /* 修改产品网格样式 */
    .product-grid {
        padding: 0 0.5rem;
        gap: 1rem;
    }
    
    .product-card {
        padding: 2rem;
    }
    
    .product-card .learn-more {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }
    
    .product-icon {
        width: 100px;
        height: 100px;
        font-size: 2rem;
        padding: 1.2rem;
    }
    
    .nav-links.active {
        backdrop-filter: blur(10px);
    }
    
    /* 修改特性项目样式 */
    .feature-item {
        padding: 1rem 1.5rem;
    }
}

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

.contact-item {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    color: var(--text-color);
}

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

.contact-item p {
    color: var(--text-color);
    margin: 0;
}

.copy-button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    pointer-events: auto !important;
}

.copy-button:hover {
    background: linear-gradient(45deg, var(--hover-color), var(--primary-color));
    box-shadow: 0 2px 5px var(--shadow-color);
    transform: translateY(-2px);
}

.copy-button:active {
    transform: translateY(0);
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    color: var(--text-color);
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 14px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    border: 1px solid var(--shadow-color);
}

.toast.show {
    opacity: 1;
}

.toast.error {
    background: #ffebee;
    border-color: #ffcdd2;
    color: #c62828;
}

footer {
    flex-shrink: 0;
}

#products h2 {
    text-align: left;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--shadow-color); 
}

#contact h2 {
    text-align: left;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--shadow-color); 
}

.nav-links a::after {
    display: none;
}

.nav-links a:hover::after {
    display: none;
}

.nav-links a.active::after {
    display: none;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.about-card {
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
    cursor: pointer;
}

.about-card.animated {
    opacity: 1;
    transform: translateY(0);
}

.about-card h3 {
    font-size: 1.2rem;
    color: var(--text-color);
    opacity: 0.8;
    margin-top: 1rem;
    font-weight: normal;
    transition: all 0.3s ease;
}

.about-card.active h3 {
    color: var(--primary-color);
    opacity: 1;
}

.about-circle, .about-card h3 {
    animation: float 3s ease-in-out infinite;
}

.about-card:hover .about-circle,
.about-card:hover h3 {
    animation: none;
    transform: scale(1.1);
}

.about-card.active .about-circle,
.about-card.active h3 {
    animation: none;
}

.about-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
    animation: float 3s ease-in-out infinite;
    border: 2px solid rgba(255, 68, 68, 0.2);
}

.about-card:hover .about-circle {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-color: var(--primary-color);
}

.page-transition {
    opacity: 0;
    transition: opacity 0.3s ease;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-detail {
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    margin-top: 80px;
}

.product-title {
    font-size: 2.8rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
    text-align: center;
    width: 100%;
    display: block;
}

.product-intro {
    text-align: center;
    color: var(--text-color);
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.8;
    padding: 0 1rem;
}

/* 修改特性卡片样式 */
.feature-card {
    background: var(--card-bg);
    width: 100%;
    box-sizing: border-box;
    margin: 0 auto;
}

/* 修改价格卡片样式 */
.price-card {
    background: linear-gradient(135deg, var(--card-bg), rgba(255, 255, 255, 0.95));
    border: 1px solid rgba(25, 118, 210, 0.1);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    box-sizing: border-box;
}

.price-card .price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 1.5rem 0;
    line-height: 1;
    position: relative;
    text-align: center;
    display: block;
}

.price-card .duration {
    font-size: 1.1rem;
    color: var(--text-color);
    opacity: 0.8;
    display: inline;
}

.price-card.featured .price {
    color: white;
}

.price-card.featured .duration {
    color: white;
}

@media (max-width: 768px) {
    .price-card .price {
        font-size: 2.5rem;
    }
    
    .price-card .duration {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .price-card .price {
        font-size: 2.2rem;
    }
    
    .price-card .duration {
        font-size: 0.9rem;
    }
}

/* 修改联系卡片样式 */
.contact-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--text-color);
    margin: 0;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    min-height: 400px;
}

.contact-card h3 {
    margin: 0;
    font-size: 1.4rem;
    color: var(--primary-color);
}

.contact-card p {
    margin: 1rem 0;
    font-size: 0.95rem;
    color: var(--text-color);
    opacity: 0.9;
}

.contact-card .cta-button {
    margin-top: 1rem;
    width: 160px;
}

/* 修改特性列表样式 */
.feature-list {
    margin: 1rem auto;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

/* 修改特性项目样式 */
.feature-item {
    background: var(--glass-bg);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    margin: 0;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    height: 48px;
}

.feature-item:hover {
    transform: translateX(5px);
    background: var(--glass-bg);
    border-color: var(--accent-color);
}

.feature-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.8rem;
    color: var(--primary-color); 
    font-size: 1rem;
    flex-shrink: 0;
}

.feature-text {
    flex: 1;
    color: var(--text-color);
    font-size: 0.9rem;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 价格项目样式 */
.price-item {
    display: flex;
    align-items: center;
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--shadow-color);
    height: 48px;
}

.price-item:last-child {
    border-bottom: none;
}

.price-item .feature-icon {
    margin-right: 0.8rem;
}

.price-item .feature-text {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

/* 修改价格和时长样式 */
.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
    display: inline-flex;
    align-items: center;
}

.duration {
    color: var(--text-color);
    font-size: 0.85rem;
    margin-left: 0.3rem;
    display: inline-block;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .price-item {
        height: 42px;
        padding: 0.6rem 0.8rem;
    }
    
    .price {
        font-size: 1.3rem;
    }
    
    .duration {
        font-size: 0.8rem;
    }
}

.product-title {
    color: var(--primary-color);
}

.feature-card {
    background: var(--card-bg);
}

.price-card {
    background: var(--card-bg);
}

.contact-card {
    background: var(--card-bg);
}

.feature-icon {
    color: var(--primary-color);
}

.price {
    color: var(--primary-color);
}

.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 0.85em;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--shadow-color);
}

.product-card .learn-more {
    color: var(--primary-color);
}

.product-card .learn-more::after {
    background: var(--primary-color);
}

.copy-wechat-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-wechat-btn:hover {
    background: linear-gradient(45deg, var(--hover-color), var(--primary-color));
    box-shadow: 0 2px 5px var(--shadow-color);
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--card-bg);
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px var(--shadow-color);
    z-index: 1;
}

.dropdown-content a {
    color: var(--text-color);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: all 0.3s ease;
}

.dropdown-content a:hover {
    background: var(--shadow-color);
    color: var(--primary-color);
}

.dropdown:hover .dropdown-content {
    display: block;
}

/* 修改底部导航样式 */
.bottom-nav {
    width: 100%;
    padding: 1rem 0;
    margin: 0rem 0;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
}

.nav-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    max-width: 800px;
    width: 100%;
    padding: 0 1rem;
    box-sizing: border-box;
}

.bottom-nav a {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 1.2rem 2rem;
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
    width: 300px;
    text-align: center;
    box-sizing: border-box;
    position: relative;
    overflow: hidden;
}

.bottom-nav a:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
    box-shadow: var(--hover-shadow);
}

.bottom-nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: 0.5s;
}

.bottom-nav a:hover::before {
    left: 100%;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .container {
        padding: 10px 15px;
    }

    .bottom-nav {
        padding: 1.5rem 0;
    }
    
    .nav-buttons {
        gap: 1rem;
        padding: 0 1rem;
    }
    
    .bottom-nav a {
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
        width: calc(50% - 0.5rem);
    }
}

/* 确保所有元素都使用border-box */
* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

/* 添加动画关键帧 */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 产品卡片动画 */
.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }
.product-card:nth-child(5) { animation-delay: 0.5s; }
.product-card:nth-child(6) { animation-delay: 0.6s; }

/* 图标动画效果 */
.product-icon {
    animation: none;
}

.product-icon:hover {
    animation: none;
}

/* 按钮悬停效果增强 */
.cta-button {
    position: relative;
    overflow: hidden;
}

.cta-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: 0.5s;
}

.cta-button:hover::after {
    left: 100%;
}

/* 特性列表项动画 */
.feature-item {
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateX(5px);
    background: var(--glass-bg);
    border-color: var(--accent-color);
}

/* 页面过渡效果 */
.page-transition {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 导航链接动画 */
.nav-links a {
    position: relative;
    overflow: hidden;
}

.nav-links a::after {
    display: none;
}

.nav-links a:hover::after {
    display: none;
}

/* 底部导航按钮动画 */
.bottom-nav a {
    position: relative;
    overflow: hidden;
}

.bottom-nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: 0.5s;
}

.bottom-nav a:hover::before {
    left: 100%;
}

/* 响应式优化 */
@media (max-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .product-card {
        padding: 1.5rem;
    }
    
    .product-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .product-card h3 {
        font-size: 1.2rem;
    }
    
    .product-card p {
        font-size: 0.9rem;
    }
    
    .feature-item {
        padding: 0.6rem 0.8rem;
    }
    
    .bottom-nav {
        padding: 1rem 0;
    }
    
    .nav-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .bottom-nav a {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        min-height: 350px;
    }
    
    .product-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
    
    .cta-button {
        width: 100%;
        padding: 0.8rem;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --gradient-start: #1a1d2e;
        --gradient-end: #2d3250;
        --card-bg: rgba(45, 50, 80, 0.95);
        --glass-bg: rgba(45, 50, 80, 0.7);
        --glass-border: rgba(255, 255, 255, 0.1);
        --text-color: #f0f2f5;
    }
    
    .product-card {
        background: var(--glass-bg);
    }
    
    .feature-item {
        background: var(--glass-bg);
    }
    
    .nav-container {
        background: var(--glass-bg);
    }
    
    .bottom-nav a {
        background: var(--glass-bg);
    }

    /* 深色模式下的移动端导航菜单 */
    @media (max-width: 768px) {
        .nav-links {
            background: var(--glass-bg);
        }

        .nav-links a:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .theme-switch {
            background: var(--glass-bg);
        }

        .theme-switch:hover {
            background: rgba(255, 255, 255, 0.1);
        }
    }
}

/* 主题切换按钮样式 */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

.theme-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    width: 40px;
    height: 40px;
}

.theme-switch:hover {
    background: var(--shadow-color);
    transform: rotate(15deg);
}

.theme-switch i {
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .theme-switch-wrapper {
        width: 100%;
        padding: 0.5rem 0;
        border-top: 1px solid var(--glass-border);
    }
    
    .theme-switch {
        width: 100%;
        height: auto;
        border-radius: 0;
        border: none;
        background: transparent;
        padding: 1rem;
    }
    
    .theme-switch:hover {
        background: var(--shadow-color);
        transform: none;
    }
}

/* 产品页面立即咨询按钮样式 */
.product-detail .cta-button {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(45, 50, 80, 0.15);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 400px;
    text-align: center;
    margin: 2rem auto;
}

.product-detail .cta-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(45, 50, 80, 0.2);
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

/* 移动端适配 */
@media (max-width: 768px) {
    .product-detail .cta-button {
        padding: 1rem 2rem;
        font-size: 1rem;
        max-width: 100%;
    }
}

/* 产品页面新布局样式 */
.product-header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2.5rem;
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.product-header:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
    border-color: var(--primary-color);
}

.product-header .product-icon {
    font-size: 4rem;
    margin: 1rem auto;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1.5rem;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 8px 20px rgba(45, 50, 80, 0.15);
    transition: var(--transition);
}

.product-header:hover .product-icon {
    transform: scale(1.1);
}

.product-title {
    font-size: 2.8rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 1.5rem 0;
    letter-spacing: -0.5px;
    text-align: center;
    width: 100%;
    display: block;
    transition: var(--transition);
}

@media (max-width: 768px) {
    .product-header {
        padding: 2rem;
        margin-bottom: 1.5rem;
    }

    .product-header .product-icon {
        width: 100px;
        height: 100px;
        font-size: 3rem;
    }

    .product-title {
        font-size: 2.2rem;
        margin: 1rem 0;
    }
}

@media (max-width: 480px) {
    .product-header {
        padding: 1rem;
    }

    .product-header .product-icon {
        width: 80px;
        height: 80px;
        font-size: 2.5rem;
    }

    .product-title {
        font-size: 1.8rem;
    }
}

.product-image-section {
    margin: 1rem auto;
    max-width: 1000px;
    text-align: center;
    display: flex;
    flex-direction: column;
}

.image-features {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    order: 1;
}

.product-preview {
    width: 100%;
    max-width: 1010px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    order: 2;
}

.image-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 1rem;
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    height: auto;
    min-height: 140px;
    justify-content: center;
    text-align: center;
}

.image-feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
    border-color: var(--primary-color);
}

.image-feature i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.image-feature span {
    font-size: 0.95rem;
    color: var(--text-color);
    font-weight: 500;
    text-align: center;
    line-height: 1.4;
}

@media (max-width: 1024px) {
    .image-features {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .image-features {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }

    .image-feature {
        padding: 1.2rem 0.8rem;
        min-height: 130px;
    }

    .image-feature i {
        font-size: 1.8rem;
        margin-bottom: 0.8rem;
    }

    .image-feature span {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .image-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }

    .image-feature {
        padding: 1rem 0.6rem;
        min-height: 120px;
    }

    .image-feature i {
        font-size: 1.6rem;
        margin-bottom: 0.6rem;
    }

    .image-feature span {
        font-size: 0.85rem;
    }
}

.product-pricing-section {
    margin: 2rem auto;
    max-width: 1000px;
}

.pricing-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
    width: 100%;
    justify-content: center;
}

.price-card {
    background: var(--glass-bg);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: all 0.4s ease;
    flex: 1;
    min-width: 280px;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.price-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.price-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.price-card:hover::before {
    opacity: 1;
}

.price-card.featured {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: white;
    transform: scale(1.05);
    z-index: 1;
}

.price-card.featured::before {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0) 100%);
}

.price-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.price-card h3 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    position: relative;
}

.price-card.featured h3 {
    color: white;
}

.price-card .price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 1.5rem 0;
    line-height: 1;
    position: relative;
}

.price-card.featured .price {
    color: white;
}

.price-card .duration {
    font-size: 1.1rem;
    color: var(--text-color);
    opacity: 0.8;
    margin-top: 0.5rem;
}

.price-card.featured .duration {
    color: white;
}

.price-card .cta-button {
    margin-top: 2rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
}

.price-card.featured .cta-button {
    background: white;
    color: var(--primary-color);
}

.price-card .cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    .pricing-cards {
        gap: 1.5rem;
    }
    
    .price-card {
        padding: 2rem;
        min-width: 240px;
    }
    
    .price-card.featured {
        transform: scale(1.02);
    }
    
    .price-card h3 {
        font-size: 1.4rem;
    }
    
    .price-card .price {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .price-card {
        padding: 1.5rem;
        min-width: 100%;
    }
    
    .price-card.featured {
        transform: none;
    }
    
    .price-card h3 {
        font-size: 1.3rem;
    }
    
    .price-card .price {
        font-size: 2.2rem;
    }
    
    .price-card .cta-button {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
}

.contact-info {
    text-align: center;
    padding: 2rem;
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--glass-border);
    max-width: 1000px;
    margin: 2rem auto;
}

.contact-info p {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.contact-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    transition: var(--transition);
}

.contact-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

img {
    transition: opacity 0.3s ease;
}