:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --accent-color: #17c3b2;
    --text-color: #333;
    --text-secondary: #666;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --shadow-light: 0 5px 15px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.4s cubic-bezier(0.215, 0.610, 0.355, 1.000);

    /* 增加字体大小，使整体更大气 */
    --font-title: 'Helvetica Neue', Arial, sans-serif;
}

body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background-color: var(--light-bg);
    font-family: var(--font-title);
    line-height: 1.7;
    font-size: 1.25rem; /* 从1.1rem增加到1.25rem，提高可读性 */
}

/* CSS续写内容 */
.section {
    padding: 80px 24px;
    background: transparent;
}

.section + .section {
    padding-top: 40px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 36px;
}

.section-title {
    font-size: 36px;
    color: var(--text-color);
    font-weight: 700;
    letter-spacing: 1px;
}

.section-subtitle {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 16px;
}

/* 合作伙伴 */
.partners-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

@media (max-width: 991.98px) {
    .partners-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575.98px) {
    .partners-list {
        grid-template-columns: 1fr;
    }
}

.partner-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-light);
    border: 1px solid rgba(0, 0, 0, 0.05);
    padding: 16px;
    transition: var(--transition);
    position: relative;
}

.partner-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.partner-logo {
    width: 100%;
    height: 360px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.10), rgba(23, 195, 178, 0.10));
    border: 1px dashed rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
    text-align: center;
    padding: 12px;
    /* 添加背景图片大小调整和居中 */
    background-size: cover; /* 改为cover以完全填充 */
    background-repeat: no-repeat;
    background-position: center;
    transition: background-image 0.3s ease;
}

.partner-body {
    flex: 1;
}

.partner-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.partner-desc {
    color: var(--text-secondary);
}

/* 进度条样式 */
.progress-bar-container {
    width: 100%;
    height: 6px;
    background-color: #e9ecef;
    border-radius: 3px;
    overflow: hidden;
    margin-top: 10px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.partner-card:hover .progress-bar-container {
    opacity: 1;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    width: 0%;
    transition: width 5s ease-in-out;
}

.partner-card:hover .progress-bar {
    width: 100%;
}

#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    top: 0;
    left: 0;
    z-index: -1;
}