:root {
    --primary-blue: #1e40af;
    --bg-blue: #f0f4f8;
    --paper-white: #ffffff;
    --text-dark: #1f2937;
    --text-muted: #4b5563;
    --border-color: #e5e7eb;
}

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

body {
    /* 使用系统自带字体，避免加载外部资源 */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    background-color: #1e40af;
    /* 纯蓝色背景 */
    color: var(--text-dark);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    /* 垂直排列，防止页脚与内容并排 */
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.paper-container {
    max-width: 600px;
    width: 100%;
    background: var(--paper-white);
    padding: 40px;
    border-radius: 4px;
    /* 模拟一张纸的感觉，较小的圆角 */
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    max-width: 120px;
    height: auto;
    margin-bottom: 15px;
}

h1 {
    font-size: 1.5rem;
    color: var(--text-dark);
    font-weight: 600;
}

.content {
    margin-bottom: 30px;
}

.content p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

.notice-list {
    list-style: none;
    background: #f9fafb;
    padding: 20px;
    border-radius: 8px;
}

.notice-list li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 1.5rem;
}

.notice-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

.qr-section {
    text-align: center;
    padding-top: 20px;
    border-top: 1px dashed var(--border-color);
}

.qr-code {
    max-width: 200px;
    width: 100%;
    height: auto;
    margin: 0 auto 10px;
    display: block;
}

.qr-text {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer {
    text-align: center;
    margin: 40px 0 20px;
    padding: 0 20px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    width: 100%;
}

/* 移动端自适应调整 */
@media (max-width: 480px) {
    .paper-container {
        padding: 30px 20px;
    }

    h1 {
        font-size: 1.25rem;
    }

    body {
        padding: 10px;
    }
}