:root {
    --primary-color: #1e88e5;
    --primary-light: rgba(30, 136, 229, 0.1);
    --primary-dark: #1565c0;
    --secondary-color: #43a047;
    --secondary-light: rgba(67, 160, 71, 0.1);
    --secondary-dark: #2e7d32;
    --accent-color: #e53935;
    --accent-light: rgba(229, 57, 53, 0.1);
    --text-color: #333;
    --text-light: #666;
    --bg-color: #fff;
    --bg-light: #f5f7fa;
    --bg-dark: #e8eef2;
    --border-color: #ddd;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
    --card-hover-transform: translateY(-10px);
}

[data-theme="dark"] {
    --primary-color: #42a5f5;
    --secondary-color: #66bb6a;
    --accent-color: #ef5350;
    --text-color: #f5f5f5;
    --text-light: #bbb;
    --bg-color: #1a1a1a;
    --bg-light: #2a2a2a;
    --bg-dark: #333;
    --border-color: #444;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
    opacity: 0;
    transition: opacity 0.5s ease;
}

body.loaded {
    opacity: 1;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-color);
    z-index: -1;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease;
    border-radius: 50px;
}

.btn:hover {
    color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(-3px);
}

.btn:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

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

.platform-card:hover .btn {
    animation: pulse 1.5s infinite ease-in-out;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.2rem;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 15px;
    letter-spacing: 0.5px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.section-title::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 3px;
    animation: pulse-width 3s infinite;
}

@keyframes pulse-width {
    0% { width: 40px; opacity: 1; }
    50% { width: 80px; opacity: 0.6; }
    100% { width: 40px; opacity: 1; }
}

/* Theme Switch */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
    background-color: var(--bg-light);
    padding: 8px 12px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.theme-switch-wrapper:hover {
    transform: translateY(-2px);
}

.theme-switch {
    display: inline-block;
    height: 24px;
    position: relative;
    width: 48px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
}

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 16px;
    left: 4px;
    position: absolute;
    transition: transform 0.4s ease, background-color 0.3s ease;
    width: 16px;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(24px);
    background-color: #fff;
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

.theme-switch-wrapper em {
    margin-left: 10px;
    font-size: 0.8rem;
    color: var(--text-light);
}

/* Header */
header {
    background-color: var(--bg-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 10;
    padding: 15px 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    margin-right: 15px;
}

.logo h1 {
    font-size: 1.9rem;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    z-index: 2;
    background-color: var(--bg-color);
    padding: 0 10px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

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

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

nav ul li a.active::after {
    transform: scaleX(1);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    /* background: linear-gradient(rgba(30, 136, 229, 0.85), rgba(67, 160, 71, 0.85)), url('hero-bg.jpg'); */
    background: linear-gradient(rgba(30, 136, 229, 0.85), rgba(67, 160, 71, 0.85));
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 100px 0;
    animation: fadeIn 0.8s ease forwards;
}

.hero h2, .hero p {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1200 120" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="none"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" fill="%23ffffff"/><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" opacity=".5" fill="%23ffffff"/><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z" fill="%23ffffff"/></svg>');
    background-size: cover;
    background-repeat: no-repeat;
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

/* Platforms Section */
.platforms {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(30, 136, 229, 0.1) 100%);
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.2s;
    position: relative;
    overflow: hidden;
}

/* 添加背景装饰元素 */
.platforms::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(67, 160, 71, 0.2) 0%, rgba(67, 160, 71, 0) 70%);
    z-index: 0;
}

.platforms::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(30, 136, 229, 0.2) 0%, rgba(30, 136, 229, 0) 70%);
    z-index: 0;
}

.platforms .container {
    position: relative;
    z-index: 1;
}

.platform-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.platform-card {
    background: linear-gradient(135deg, var(--bg-color), var(--bg-color) 60%, var(--primary-light));
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), 
                box-shadow 0.5s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: -10px;
    right: -10px;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, var(--primary-light) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.7;
    transition: all 0.5s ease;
}

.platform-card:hover::before {
    transform: scale(1.2);
    opacity: 1;
}

.platform-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-hover);
    border-color: rgba(30, 136, 229, 0.2);
}

.platform-card .icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.platform-card:hover .icon {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(30, 136, 229, 0.4);
}

.platform-card .icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0) 70%);
    top: -50%;
    left: -50%;
}

.platform-card .icon i {
    font-size: 2.5rem;
    color: white !important;
    transition: transform 0.4s ease;
}

.platform-card:hover .icon i {
    transform: scale(1.1);
    color: white !important;
}

.platform-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    transition: all 0.3s ease;
    position: relative;
    display: inline-block;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-card h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    transition: width 0.5s ease;
}

.platform-card:hover h3::after {
    width: 100%;
}

.platform-card p {
    color: var(--text-light);
    margin-bottom: 25px;
    flex-grow: 1;
}

.platform-card .btn {
    align-self: center;
    margin-top: auto;
}

/* Features Section */
.features {
    padding: 80px 0;
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.4s;
    background-color: var(--bg-color);
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231e88e5' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    position: relative;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature {
    background: linear-gradient(135deg, var(--bg-light), var(--bg-light) 80%, var(--secondary-light));
    border-radius: 12px;
    padding: 35px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.03);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.feature:hover::before {
    transform: scaleX(1);
}

.feature i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: inline-block;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feature:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.feature:hover i {
    transform: scale(1.2) translateY(-5px) rotate(10deg);
    color: var(--secondary-color);
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.feature p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* News Section */
.news {
    padding: 80px 0;
    background-color: var(--bg-light);
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.6s;
    position: relative;
}

.news::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' xmlns='http://www.w3.org/2000/svg' preserveAspectRatio='none'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' fill='%23ffffff'/%3E%3C/svg%3E");
    background-size: cover;
    background-repeat: no-repeat;
    transform: rotate(180deg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.news-item {
    background: linear-gradient(135deg, var(--bg-color), var(--bg-color) 70%, var(--accent-light));
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.news-item::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 50px 50px 0;
    border-color: transparent var(--primary-light) transparent transparent;
    transition: all 0.4s ease;
}

.news-item:hover::before {
    border-width: 0 70px 70px 0;
    border-color: transparent var(--primary-color) transparent transparent;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.news-date {
    display: inline-block;
    padding: 5px 12px;
    background-color: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 15px;
}

.news-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.news-item:hover h3 {
    color: var(--primary-dark);
}

.news-item p {
    color: var(--text-light);
    margin-bottom: 15px;
}

.read-more {
    font-weight: 500;
    display: inline-block;
    position: relative;
    padding-right: 25px;
}

.read-more::after {
    content: '→';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: all 0.3s ease;
}

.read-more:hover::after {
    right: -5px;
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark) 70%, rgba(30, 136, 229, 0.1));
    color: var(--text-color);
    padding: 70px 0 20px;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 10px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color), var(--accent-color));
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

.footer-section p {
    margin-bottom: 10px;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section i {
    margin-right: 10px;
    color: var(--primary-color);
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s ease, background-color 0.3s ease;
}

.social-icons a i {
    font-size: 1.5rem;
    color: white !important;
    transition: transform 0.3s ease;
}

.social-icons a:hover {
    transform: translateY(-8px) rotate(360deg);
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
}

.social-icons a:hover i {
    transform: scale(1.2);
}

/* 暗色模式下的调整 */
[data-theme="dark"] .social-icons a {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .social-icons a i {
    color: white !important;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .logo h1 {
        font-size: 1.2rem;
    }
    
    nav ul li {
        margin-left: 10px;
    }
    
    nav ul li a {
        padding: 6px 10px;
    }
}

@media (max-width: 768px) {
    nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .platform-card h3 {
        min-height: auto;
    }
    
    .platform-card p {
        min-height: auto;
    }
}

@media (max-width: 576px) {
    .logo img {
        height: 40px;
    }
    
    .logo h1 {
        font-size: 1rem;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .platforms, .features, .news {
        padding: 50px 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

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

.hero, .platforms, .features, .news {
    animation: fadeIn 0.8s ease forwards;
}

.platforms {
    animation-delay: 0.2s;
}

.features {
    animation-delay: 0.4s;
}

.news {
    animation-delay: 0.6s;
}

/* 错开动画时间 */
.platform-card:nth-child(2), .feature:nth-child(2), .news-item:nth-child(2) {
    transition-delay: 0.2s;
}

.platform-card:nth-child(3), .feature:nth-child(3), .news-item:nth-child(3) {
    transition-delay: 0.4s;
}

.feature:nth-child(4) {
    transition-delay: 0.6s;
}

.platform-card.animate, .feature.animate, .news-item.animate {
    opacity: 1;
    transform: translateY(0);
}

/* 调整暗色模式下的logo区域 */
[data-theme="dark"] .logo {
    background-color: rgba(40, 40, 40, 0.9);
}

[data-theme="dark"] .logo h1 {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

/* 添加平滑滚动效果 */
html {
    scroll-behavior: smooth;
}

/* 调整锚点定位，防止内容被固定导航栏遮挡 */
#features, #news {
    scroll-margin-top: 80px; /* 根据导航栏高度调整 */
}

/* 为暗色模式调整背景 */
[data-theme="dark"] .platforms {
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(66, 165, 245, 0.2) 100%);
}

[data-theme="dark"] .features {
    background-color: var(--bg-color);
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2342a5f5' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* 添加微妙的动画效果 */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.platforms::before {
    animation: float 15s ease-in-out infinite;
}

.platforms::after {
    animation: float 12s ease-in-out infinite reverse;
}

/* 添加页面滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color), var(--accent-color));
    z-index: 1000;
    transition: width 0.1s ease;
}

/* 确保所有卡片高度一致 */
@media (min-width: 992px) {
    .platform-cards {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
        align-items: stretch;
    }
}