body {
    font-family: 'Roboto', Arial, sans-serif;
    line-height: 1.6;
    color: #555555;
    margin: 0;
    padding: 0;
    background-color: #FFF2F2;
}

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

header {
    background-color: #BA4949;
    color: white;
    padding: 1rem 0;
}

h1 {
    margin: 0;
    font-size: 24px;
    text-align: center;
    margin-bottom: 1rem;
}

h2 {
    color: #412B2B;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

h3 {
    color: #412B2B;
    font-size: 22px;
    font-weight: 700;
    margin-top: 1.5rem;
}

#calculator {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    padding: 2rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: #412B2B;
}

input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

button {
    display: block;
    width: 100%;
    padding: 1rem;
    background-color: #BA4949;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 700;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #A44242;
}

#result {
    margin-top: 1.5rem;
    font-weight: 700;
    text-align: center;
    font-size: 20px;
    color: #BA4949;
}

#info {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 2rem;
}

p, ul {
    font-size: 16px;
    color: #555555;
}

ul {
    padding-left: 20px;
}

footer {
    background-color: #BA4949; /* 统一的背景色 */
    padding: 20px;
    text-align: center;
    color: white; /* 确保文本颜色与背景色对比明显 */
}

footer nav {
    margin-bottom: 1rem;
}

footer nav a {
    color: #777;
    text-decoration: none;
    margin: 0 10px;
    font-weight: bold;
}

footer nav a:hover {
    color: #555;
}

.social-icons {
    margin-bottom: 1rem;
}

.icon {
    display: inline-block;
    width: 30px;
    height: 30px;
    background-color: #ccc;
    border-radius: 50%;
    margin: 0 5px;
}

.icon.facebook {
    background-color: #3b5998;
}

.icon.twitter {
    background-color: #1da1f2;
}

.icon.other {
    background-color: #4caf50;
}

footer p {
    margin: 5px 0;
    color: white; /* 确保文本颜色与背景色对比明显 */
}

.heart {
    color: #BA4949;
}

/* Articles page styles */
#articles article {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

#articles h3 {
    margin-top: 0;
}

#articles a {
    color: #BA4949;
    text-decoration: none;
}

#articles a:hover {
    text-decoration: underline;
}

/* Common styles for all pages */
main {
    padding: 2rem 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation styles */
header nav ul {
    list-style-type: none;
    padding: 0;
    margin: 1rem 0 0;
    display: flex;
    justify-content: center;
}

header nav ul li {
    margin: 0 10px;
}

header nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

header nav ul li a:hover {
    text-decoration: underline;
}

/* FAQ page styles */
.faq-item {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.faq-item h3 {
    margin-top: 0;
    color: #BA4949;
}

/* 优化语言选择下拉框的样式 */
#language_label {
    font-weight: bold;
    color: white; /* 与导航栏颜色一致 */
    margin-right: 10px; /* 添右边距 */
    display: inline-block; /* 确保在同一行 */
}

#language-select {
    padding: 0.25rem; /* 调整内边距 */
    border: 1px solid #ddd; /* 边框样式 */
    border-radius: 4px; /* 圆角 */
    font-size: 14px; /* 调整字体大小 */
    background-color: #fff; /* 背景颜色 */
    color: #555; /* 字体颜色 */
    height: auto; /* 自适应高度 */
    display: inline-block; /* 确保在同一行 */
}

/* 导航栏和语言选择的响应式样式 */
header {
    padding: 1rem 0;
}

header .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

header h1 {
    text-align: center;
    margin-bottom: 1rem;
}

header nav {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

header nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0;
    margin: 0 0 1rem 0;
}

header nav ul li {
    margin: 0.5rem;
}

header nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem;
    display: block;
}

.language-select-container {
    display: flex;
    align-items: center;
}

#language_label {
    font-weight: bold;
    color: white;
    margin-right: 0.5rem;
}

#language-select {
    padding: 0.25rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background-color: #fff;
    color: #555;
}

/* 媒体查询,适应大屏幕 */
@media screen and (min-width: 768px) {
    header nav {
        flex-direction: row;
        justify-content: space-between;
    }

    header nav ul {
        margin: 0;
    }

    .language-select-container {
        margin-top: 0;
    }
}

/* 头部样式 */
header {
    background-color: #BA4949;
    color: white;
    padding: 1rem 0;
}

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

header .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

header h1 {
    margin: 0;
    font-size: 24px;
    text-align: center;
    margin-bottom: 1rem;
}

header nav {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

header nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

header nav ul li {
    margin: 0 0.5rem;
}

header nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem;
}

.language-select-container {
    display: flex;
    align-items: center;
    margin-top: 1rem;
}

#language_label {
    font-weight: bold;
    color: white;
    margin-right: 0.5rem;
}

#language-select {
    padding: 0.25rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background-color: #fff;
    color: #555;
}

/* 媒体查询，适应大屏幕 */
@media screen and (min-width: 768px) {
    header .container {
        flex-direction: column;
        align-items: center;
    }

    header h1 {
        font-size: 28px;
        margin-bottom: 1rem;
    }

    header nav {
        flex-direction: row;
        justify-content: center;
    }

    .language-select-container {
        margin-top: 1rem;
    }
}