@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;600;900&display=swap');

:root {
    /* 国风主题色 */
    --color-primary: #8C4356; /* 朱砂红 */
    --color-secondary: #BFA36D; /* 琉璃金 */
    --color-bg: #F7F7F6; /* 宣纸白 */
    --color-text: #2C2827; /* 水墨黑 */
    --color-text-light: #665F5D;
    --color-white: #FFFFFF;
    
    /* 间距与圆角 */
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 40px;
    --spacing-xl: 80px;
    --radius-sm: 4px;
    --radius-md: 8px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 10px rgba(44, 40, 39, 0.05);
    --shadow-md: 0 10px 30px rgba(44, 40, 39, 0.08);
    --shadow-hover: 0 15px 40px rgba(140, 67, 86, 0.12);
}

/* 全局样式 */
body {
    font-family: 'Noto Serif SC', 'Source Han Serif SC', serif;
    margin: 0;
    padding: 0;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--color-primary);
    margin-top: 0;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 头部导航 */
header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: 2px;
}

header nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: var(--spacing-lg);
}

header nav ul li a {
    color: var(--color-text);
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    padding-bottom: 5px;
}

header nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--color-secondary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

header nav ul li a:hover {
    color: var(--color-primary);
}

header nav ul li a:hover::after {
    width: 100%;
}

/* Hero Section (首页头图) */
.hero {
    background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(191,163,109,0.05) 0%, rgba(255,255,255,0) 70%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    letter-spacing: 4px;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero p {
    font-size: 1.2rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.btn-primary {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 12px 36px;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    letter-spacing: 2px;
    box-shadow: 0 4px 15px rgba(140, 67, 86, 0.3);
}

.btn-primary:hover {
    background-color: #723545;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(140, 67, 86, 0.4);
}

/* 主要内容区域通用 */
main {
    padding: var(--spacing-xl) 0;
}

.page-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    letter-spacing: 3px;
    position: relative;
}

.page-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--color-secondary);
    margin: 15px auto 0;
}

/* 详情段落 */
.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.content-wrapper p {
    text-indent: 2em;
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* 卡片网格布局 (首页特点、产品、理念) */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.card {
    background-color: var(--color-white);
    border: 1px solid rgba(191, 163, 109, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--color-secondary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.card:hover::before {
    transform: scaleX(1);
}

.card h2 {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.card p {
    color: var(--color-text-light);
    font-size: 1rem;
    text-align: justify;
}

/* 联系表单 */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #E0DCDA;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
    background-color: #FAFAFA;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    background-color: var(--color-white);
    box-shadow: 0 0 0 3px rgba(191, 163, 109, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 15px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-family: inherit;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-submit:hover {
    background-color: #723545;
}

/* 底部 */
footer {
    background-color: var(--color-text);
    color: #A09B99;
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: auto;
}

footer p {
    margin: 0 0 5px 0;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

footer a {
    color: #A09B99;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--color-white);
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .nav-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    header nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }

    .hero h1 {
        font-size: 2rem;
    }
    
    .content-wrapper {
        padding: var(--spacing-md);
    }
    
    .contact-form {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}