/* 字体导入 */
@import url('https://fonts.googleapis.com/css2?family=Questrial&display=swap');

/* 自定义字体 */
@font-face {
    font-family: 'Avenir';
    src: url('https://ext.same-assets.com/2585951812/281293202.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Futura';
    src: url('https://ext.same-assets.com/2585951812/1235459780.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'CustomFont';
    src: url('https://ext.same-assets.com/4226829879/1345251600.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* CSS 重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局变量 */
:root {
    --color-primary: #000000;
    --color-secondary: #ffffff;
    --color-text: #1b1e1b;
    --color-text-light: #7c7c7c;
    --color-light-gray: #f2f3f4;
    --color-medium-gray: #a09995;
    --color-divider: #e5e5e5;

    --font-primary: 'Questrial', 'Avenir', sans-serif;
    --font-secondary: 'Avenir', 'Futura', sans-serif;
    --font-logo: 'CustomFont', 'Questrial', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    --transition-standard: all 0.3s ease;
}

/* 基础样式 */
html, body {
    width: 100%;
    height: 100%;
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

#root, .site-container {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 布局结构 */
.main-content {
    flex: 1;
    padding-top: 100px; /* 导航高度 */
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-lg);
    background-color: var(--color-secondary);
    z-index: 1000;
}

.logo-container {
    flex: 1;
}

.logo {
    font-family: var(--font-logo);
    font-size: 1.5rem;
    letter-spacing: 5px;
    font-weight: 300;
    color: var(--color-primary);
    text-transform: uppercase;
}

.main-nav {
    flex: 2;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-item {
    position: relative;
}

.nav-link {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 400;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link.active {
    font-weight: 500;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
}

.social-links {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.social-link {
    display: flex;
    align-items: center;
}

.social-icon {
    width: 18px;
    height: 18px;
}

/* 页脚 */
.footer {
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    margin-top: var(--spacing-lg);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-logo {
    margin-bottom: var(--spacing-xs);
	text-align:center;
}

.footer-logo .logo {
    font-size: 1.2rem;
	text-align:center;
}
.footer-logo .logo img{ display:inline; width:80px;}

.footer-contact {
    margin-bottom: var(--spacing-xs);
}

.contact-email {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    color: var(--color-primary);
}

.footer-disclaimer {
    font-family: var(--font-primary);
    font-size: 0.7rem;
    color: var(--color-text-light);
    line-height: 1.4;
    max-width: 600px;
    margin: 0 auto;
}

/* 响应式设计 */
@media screen and (max-width: 1024px) {
    .header {
        padding: 0 var(--spacing-md);
    }
}

@media screen and (max-width: 768px) {
    .header {
        height: auto;
        flex-direction: column;
        padding: var(--spacing-sm);
    }

    .logo-container {
        margin-bottom: var(--spacing-sm);
    }

    .main-nav {
        width: 100%;
        margin: var(--spacing-xs) 0;
    }

    .nav-list {
        width: 100%;
        justify-content: center;
        gap: var(--spacing-sm);
    }

    .social-links {
        margin-top: var(--spacing-xs);
    }

    .main-content {
        padding-top: 150px;
    }
}

@media screen and (max-width: 480px) {
    .nav-list {
        gap: var(--spacing-xs);
    }

    .nav-link {
        font-size: 0.85rem;
    }

    .main-content {
        padding-top: 160px;
    }
}