/* logo样式 */
.site-logo {
    width: 48px;  /* 增加logo尺寸 */
    height: 48px;
    border-radius: 50%;
    margin: 0;
}
/* 网格布局让内容一屏显示 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-top: 32px;
}
section {
    background: #f7fbff;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(79,140,255,0.07);
    padding: 20px 18px;
    min-width: 0;
    transition: transform 0.3s ease;
}
@media (max-width: 900px) {
    .grid-container {
        grid-template-columns: 1fr;
        gap: 18px;
    }
}
body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background: #f4f6fa;
    margin: 0;
    color: #222;
}
header {
    background: linear-gradient(90deg, #4f8cff 0%, #6ad1ff 100%);
    color: #fff;
    padding: 30px 0;  /* 将padding从15px增加到30px */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
header h1 {
    margin: 0;
    font-size: 1.8em;  /* 增加标题字体大小 */
    letter-spacing: 1px;
}
header p {
    margin: 0;
    font-size: 1.1em;
    opacity: 0.95;
}
main {
    max-width: 900px;
    margin: 40px auto 40px auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.07);
    padding: 32px 24px;
}
section {
    margin-bottom: 36px;
}
section h2 {
    color: #4f8cff;
    font-size: 1.4em;
    margin-bottom: 12px;
    border-left: 4px solid #6ad1ff;
    padding-left: 10px;
}
ul {
    padding-left: 24px;
    margin: 0;
}
ul li {
    margin-bottom: 8px;
    font-size: 1.08em;
}
footer {
    background: #4f8cff;
    color: #fff;
    text-align: center;
    padding: 16px 0;
    font-size: 1em;
    letter-spacing: 1px;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.04);
    margin-top: 40px;
    border-radius: 0 0 12px 12px;
}
footer a {
    color: #fff;
}
.grid-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    padding: 40px 20px;
}
@media (max-width: 768px) {
    :root {
        --container-padding: 15px;
        --section-spacing: 20px;
    }

    .grid-container {
        grid-template-columns: 1fr;
    }

    section {
        padding: 15px;
    }

    ul {
        padding-left: 20px;
    }

    li {
        font-size: 14px;
    }

    h2 {
        font-size: 20px;
        margin: 10px 0;
    }

    [data-aos-delay] {
        transition-delay: 0s !important;
    }
}
@media (max-width: 600px) {
    main {
        padding: 16px 6px;
    }
    section h2 {
        font-size: 1.1em;
        padding-left: 6px;
    }
}
@media (max-width: 480px) {
    footer {
        padding: 15px;
        font-size: 12px;
    }
}

/* 添加淡入动画关键帧 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 添加淡入动画类 */
.fade-in {
    opacity: 0;
    visibility: hidden;
    animation: fadeInUp 0.6s ease forwards;
}

.fade-in.visible {
    visibility: visible;
}