/* ===== 公共样式 ===== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #f0f4f8;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

/* ===== 顶部导航 ===== */
.top-bar {
    background: linear-gradient(135deg, #4a90d9 0%, #67b8de 100%);
    padding: 0;
}

.top-bar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    margin-left: 8px;
}

.top-links a {
    color: #fff;
    text-decoration: none;
    margin-left: 24px;
    font-size: 14px;
    opacity: 0.9;
}

.top-links a:hover {
    opacity: 1;
}

/* ===== 主导航 ===== */
.main-nav {
    background: #fff;
    border-bottom: 1px solid #eee;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    height: 60px;
}

.nav-brand img {
    height: 45px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    flex: 1;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    display: block;
    padding: 0 24px;
    color: #333;
    text-decoration: none;
    font-size: 15px;
    height: 60px;
    line-height: 60px;
    transition: all 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: #4a90d9;
    background: #f0f7fc;
}

/* ===== 底部 ===== */
.footer {
    background: linear-gradient(135deg, #e8f4fc 0%, #d4e9f7 100%);
    text-align: center;
    padding: 40px 20px;
    color: #666;
    font-size: 14px;
    margin-top: 40px;
}

.footer a {
    color: #4a90d9;
    text-decoration: none;
}

.footer a:hover {
    color: #3a7bc8;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 15px;
}

/* ===== 容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .top-bar-inner {
        padding: 0 15px;
        height: 36px;
    }

    .logo img {
        height: 32px;
    }

    .logo-text {
        display: none;
    }

    .top-links a {
        margin-left: 12px;
        font-size: 13px;
    }

    .nav-inner {
        padding: 0 15px;
        height: 50px;
    }

    .nav-brand img {
        height: 36px;
    }

    .nav-links a {
        padding: 0 12px;
        font-size: 14px;
        height: 50px;
        line-height: 50px;
    }

    .container {
        padding: 20px 15px;
    }

    .footer {
        padding: 30px 15px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .top-links a {
        margin-left: 8px;
        font-size: 12px;
    }

    .nav-links a {
        padding: 0 8px;
        font-size: 13px;
    }
}