/* ==================== 全局变量 ==================== */
:root {
    --primary-color: #FF4177;
    --primary-light: #FF6B9D;
    --primary-lighter: #FFE5EE;
    --bg-light: #FFF0F5;
    --text-dark: #333333;
    --text-gray: #666666;
    --text-light: #999999;
    --border-color: #E0E0E0;
    --white: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 16px;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ==================== 头部导航 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid #e0e0e0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 32px;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-dark);
    font-size: 16px;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* 发布按钮样式 */
.btn-publish {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-publish:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ==================== Footer ==================== */
.footer {
    background: #2c2c2c;
    color: var(--white);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--primary-light);
}

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

.footer-col a {
    color: #cccccc;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--primary-light);
}

.qr-placeholder {
    width: 120px;
    height: 120px;
    background: var(--white);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 10px;
}

.contact-qrcode p {
    font-size: 14px;
    color: #cccccc;
    margin-top: 10px;
}

/* 二维码图片样式 */
.qr-image {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    display: block;
    margin: 0 auto;
}

/* Footer联系方式区域 */
.footer-contact {
    max-width: 280px;
}

.contact-info {
    margin-bottom: 20px;
}

.contact-info p {
    font-size: 14px;
    color: #cccccc;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    line-height: 1.6;
}

.contact-info .icon {
    margin-right: 8px;
    font-size: 16px;
    color: var(--primary-light);
}

/* 二维码容器 */
.qrcode-container {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.qrcode-item {
    text-align: center;
    flex: 1;
}

.qr-image-small {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid #444;
    display: block;
    margin: 0 auto 8px;
    transition: all 0.3s;
}

.qr-image-small:hover {
    border-color: var(--primary-light);
    transform: scale(1.05);
}

.qrcode-item p {
    font-size: 12px;
    color: #999999;
    margin-top: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444444;
}

.footer-bottom p {
    font-size: 14px;
    color: #999999;
    margin-bottom: 5px;
}

.footer-bottom a {
    color: #999999;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: var(--primary-light);
}

/* ==================== 返回顶部 ==================== */
.back-top {
    position: fixed;
    bottom: 50px;
    right: 50px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255, 65, 119, 0.3);
}

.back-top.show {
    opacity: 1;
    visibility: visible;
}

.back-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(255, 65, 119, 0.4);
}

/* ====================  浮动发布按钮 ==================== */
.float-publish {
    position: fixed;
    bottom: 120px;
    right: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 15px 25px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    transition: all 0.3s;
    z-index: 999;
}

.float-publish:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.5);
}

.float-publish .publish-icon {
    font-size: 20px;
}

.float-publish .publish-text {
    font-size: 16px;
}

/* ==================== 通用区块样式 ==================== */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 50px;
}

/* ==================== 响应式 - 平板 ==================== */
@media (max-width: 1024px) {
    .footer-top {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== 响应式 - 移动端 ==================== */
@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .back-top {
        bottom: 30px;
        right: 30px;
        width: 45px;
        height: 45px;
    }
    
    .float-publish {
        bottom: 90px;
        right: 30px;
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .float-publish .publish-icon {
        font-size: 18px;
    }
    
    .float-publish .publish-text {
        font-size: 14px;
    }
}