/* 全局样式 */
:root {
    --primary-color: #2c5282;
    --secondary-color: #4299e1;
    --accent-color: #f56565;
    --text-color: #333333;
    --light-text: #666666;
    --bg-color: #ffffff;
    --light-bg: #f7f9fc;
    --border-color: #e2e8f0;
    --success-color: #48bb78;
    --warning-color: #ecc94b;
    --error-color: #e53e3e;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 4px;
    
    /* 渐变背景颜色 - 更淡的色调 */
    --gradient-color-1: #f0f9ff;
    --gradient-color-2: #e1f5fe;
    --gradient-color-3: #e3f2fd;
    --gradient-color-4: #ebf8ff;
}

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

@keyframes gradientBackground {
    0% {
        background-position: 0% 50%;
    }
    25% {
        background-position: 50% 25%;
    }
    50% {
        background-position: 100% 50%;
    }
    75% {
        background-position: 50% 75%;
    }
    100% {
        background-position: 0% 50%;
    }
}

body {
    font-family: "Microsoft YaHei", "微软雅黑", "Source Han Sans CN", "思源黑体", sans-serif;
    color: var(--text-color);
    background: linear-gradient(-45deg, var(--gradient-color-1), var(--gradient-color-2), var(--gradient-color-3), var(--gradient-color-4));
    background-size: 300% 300%;
    animation: gradientBackground 12s ease infinite;
    line-height: 1.6;
}

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

a:hover {
    color: var(--secondary-color);
    transform: translateY(-2px);
}

ul, ol {
    list-style-type: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.btn:hover:before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    box-shadow: 0 2px 5px rgba(44, 82, 130, 0.3);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(66, 153, 225, 0.4);
}

.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background-color: transparent;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(44, 82, 130, 0.3);
}

.btn-secondary {
    background-color: #f8f9fa;
    color: #333;
    border: 1px solid #ddd;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.btn-secondary:hover {
    background-color: #e9ecef;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.btn-login {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(44, 82, 130, 0.3);
}

.btn-register {
    background-color: var(--primary-color);
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(44, 82, 130, 0.3);
}

.btn-register:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(66, 153, 225, 0.4);
}

.section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.section-title:hover::after {
    width: 100px;
}

/* 头部导航样式 */
.header {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(66, 153, 225, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all 0.3s ease;
}

.header:hover {
    box-shadow: 0 4px 20px rgba(66, 153, 225, 0.15);
}

.header:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--gradient-color-1), var(--gradient-color-2), var(--gradient-color-3), var(--gradient-color-4));
    opacity: 0;
    transition: opacity 0.5s ease;
}

.header:hover:before {
    opacity: 1;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 15px;
    flex-wrap: nowrap;
    max-width: 1280px;
}

.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 20px;
    transition: all 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    height: 40px;
    margin-right: 12px;
    transition: all 0.3s ease;
}

.logo img:hover {
    transform: rotate(5deg);
}

.logo h1 {
    font-size: 16px;
    color: var(--primary-color);
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: 0.5px;
}

.main-nav {
    flex-grow: 1;
    display: flex;
    justify-content: center;
}

.main-nav ul {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: nowrap;
    margin: 0;
    padding: 0;
}

.main-nav li {
    margin: 0 10px;
    white-space: nowrap;
    position: relative;
}

.main-nav a {
    color: var(--text-color);
    font-weight: 500;
    padding: 10px 12px;
    position: relative;
    font-size: 14px;
    display: block;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-radius: 4px;
    overflow: hidden;
}

.main-nav a:before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
}

.main-nav a:hover:before {
    left: 100%;
}

.main-nav a:hover {
    color: var(--primary-color);
    background-color: rgba(66, 153, 225, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.main-nav a.active {
    color: var(--primary-color);
    font-weight: 600;
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.main-nav a.active:hover::after {
    width: 80%;
}

.user-info {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
    margin-left: 15px;
}

.user-info a {
    padding: 6px 15px;
    font-size: 14px;
    white-space: nowrap;
    border-radius: 20px;
    transition: all 0.2s ease;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 15px 0;
    font-size: 14px;
    color: var(--light-text);
}

.breadcrumb a {
    color: var(--primary-color);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 响应式样式 */
@media (max-width: 1200px) {
    .main-nav a {
        padding: 8px 8px;
        font-size: 13px;
    }
    
    .main-nav li {
        margin: 0 5px;
    }
    
    .logo h1 {
        font-size: 14px;
    }
    
    .user-info a {
        padding: 5px 12px;
        font-size: 13px;
    }
}

@media (max-width: 992px) {
    .header .container {
        flex-wrap: wrap;
        padding: 8px 10px;
    }
    
    .logo {
        margin-right: 0;
        margin-bottom: 5px;
        justify-content: center;
        width: 100%;
    }
    
    .main-nav {
        order: 3;
        width: 100%;
        margin-top: 8px;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-nav li {
        margin: 3px 5px;
    }
    
    .main-nav a {
        padding: 6px 10px;
        font-size: 13px;
    }
    
    .main-nav a.active::after {
        bottom: 0;
        width: 15px;
        height: 2px;
    }
    
    .user-info {
        order: 2;
        margin: 0 auto;
        margin-top: 5px;
    }
}

@media (max-width: 768px) {
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-nav li {
        margin: 3px;
    }
    
    .main-nav a {
        padding: 5px 8px;
        font-size: 12px;
    }
    
    .logo img {
        height: 35px;
    }
}

@media (max-width: 576px) {
    .header .container {
        padding: 5px;
    }
    
    .logo img {
        height: 30px;
        margin-right: 8px;
    }
    
    .logo h1 {
        font-size: 12px;
    }
    
    .user-info {
        gap: 5px;
    }
    
    .user-info a {
        padding: 4px 10px;
        font-size: 12px;
    }
    
    .main-nav a {
        padding: 4px 6px;
        font-size: 11px;
    }
    
    .main-nav a.active::after {
        width: 12px;
        height: 2px;
    }
} 

/* 页脚样式 */
.footer {
    background-color: #f8f9fa;
    padding: 40px 0 20px;
    margin-top: 50px;
    border-top: 1px solid #e9ecef;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 20px;
}

.footer-logo {
    flex: 0 0 100%;
    max-width: 240px;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 10px;
}

.footer-logo p {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 500;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    flex: 1;
    justify-content: space-around;
    max-width: 600px;
}

.link-group {
    flex: 0 0 33.333%;
    padding: 0 15px;
    margin-bottom: 20px;
}

.link-group h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 10px;
}

.link-group h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--accent-color);
}

.link-group ul li {
    margin-bottom: 8px;
}

.link-group ul li a {
    color: var(--light-text);
    font-size: 14px;
}

.link-group ul li a:hover {
    color: var(--primary-color);
}

.footer-contact {
    flex: 0 0 100%;
    max-width: 280px;
}

.footer-contact h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 10px;
}

.footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-contact p {
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--light-text);
    display: flex;
    align-items: center;
}

.footer-contact i {
    margin-right: 10px;
    font-size: 16px;
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--light-text);
}

@media (max-width: 992px) {
    .footer-content {
        flex-direction: column;
    }
    
    .footer-logo, .footer-links, .footer-contact {
        max-width: 100%;
    }
    
    .footer-links {
        margin: 20px 0;
    }
}

@media (max-width: 768px) {
    .link-group {
        flex: 0 0 50%;
    }
}

@media (max-width: 576px) {
    .link-group {
        flex: 0 0 100%;
    }
}

/* 图标样式 */
.icon-address:before { content: "📍"; }
.icon-phone:before { content: "📞"; }
.icon-email:before { content: "✉️"; }
.icon-weixin:before { content: "微"; }
.icon-weibo:before { content: "微"; }
.icon-douyin:before { content: "抖"; } 

/* 通用链接卡片样式 */
a.card-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
}

a.card-link:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(66, 153, 225, 0.5);
}

/* 卡片箭头指示器 */
.card-arrow-indicator {
    position: absolute;
    bottom: 15px;
    right: 15px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: rgba(66, 153, 225, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.card-arrow-indicator i {
    color: var(--primary-color);
    font-size: 14px;
}

a.card-link:hover .card-arrow-indicator {
    opacity: 1;
    transform: translateX(0);
}

/* 标签页平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 锚点定位修正（防止内容被固定导航栏遮挡） */
:target {
    scroll-margin-top: 80px;
}