/* 视差滚动铂金主题 */
:root {
    --platinum: #e5e4e2;
    --platinum-dark: #d3d2d1;
    --platinum-light: #f5f5f5;
    --gold-accent: #d4af37;
    --text-dark: #333;
    --text-light: #fff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Playfair Display', serif;
}

body {
    color: var(--text-dark);
    line-height: 1.8;
    background-color: var(--platinum-light);
    perspective: 1px;
    transform-style: preserve-3d;
    overflow-x: hidden;
}

/* 视差基础样式 */
.parallax-wrapper {
    position: relative;
    z-index: 1;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
}

.parallax-section {
    position: relative;
    min-height: 100vh;
    padding: 100px 0;
    transform-style: preserve-3d;
}

.parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    transform: translateZ(-1px) scale(2);
    background-size: cover;
    background-position: center;
    opacity: 0.7;
}

/* 头部样式 - 铂金金属质感 */
header {
    background: linear-gradient(145deg, var(--platinum), var(--platinum-dark));
    padding: 25px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    border-bottom: 3px solid var(--gold-accent);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

.logo {
    font-size: 32px;
    font-weight: 700;
    color: transparent;
    background: linear-gradient(to right, #8e793e, #ad974f, #c9b277);
    -webkit-background-clip: text;
    background-clip: text;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
    letter-spacing: 2px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav ul li a {
    color: var(--text-dark);
    font-weight: 600;
    padding: 10px 15px;
    border-radius: 30px;
    transition: all 0.4s;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gold-accent);
    transition: all 0.4s;
    transform: translateX(-50%);
}

nav ul li a:hover {
    color: var(--gold-accent);
}

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

/* 主要内容区域 */
.main-content {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    padding: 50px;
    margin: 50px auto;
    box-shadow: var(--shadow);
    border: 1px solid var(--platinum-dark);
    max-width: 1200px;
    position: relative;
    z-index: 2;
}

.section-title {
    font-size: 36px;
    margin-bottom: 40px;
    text-align: center;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--gold-accent);
}

/* 3D卡片式文章列表 */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    perspective: 1000px;
}

.article-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transform-style: preserve-3d;
    position: relative;
}

.article-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.6s;
}

.article-card:hover .card-image {
    transform: scale(1.05);
}

.card-body {
    padding: 25px;
}

.card-title {
    font-size: 22px;
    margin-bottom: 15px;
    font-weight: 700;
    color: var(--text-dark);
    transition: color 0.3s;
}

.article-card:hover .card-title {
    color: var(--gold-accent);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    color: #777;
    font-size: 14px;
    margin-top: 20px;
    border-top: 1px solid var(--platinum);
    padding-top: 15px;
}

/* 分类标签 */
.category-tag {
    display: inline-block;
    padding: 5px 15px;
    background: linear-gradient(to right, var(--platinum), var(--platinum-dark));
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 15px;
    border: 1px solid var(--platinum-dark);
}

/* 文章详情页样式 */
.article-detail {
    max-width: 900px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 50px;
    text-align: center;
}

.article-title {
    font-size: 42px;
    margin-bottom: 25px;
    line-height: 1.3;
    color: var(--text-dark);
    font-weight: 700;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: #777;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.article-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 10px;
    margin: 30px 0;
    box-shadow: var(--shadow);
    transition: transform 0.6s;
}

.article-image:hover {
    transform: scale(1.02);
}

.article-content {
    line-height: 1.9;
    font-size: 18px;
}

.article-content p {
    margin-bottom: 25px;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 30px auto;
    display: block;
    box-shadow: var(--shadow);
}

/* 分页导航 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 50px;
}

.pagination a {
    padding: 12px 25px;
    border-radius: 30px;
    background: linear-gradient(145deg, var(--platinum), var(--platinum-dark));
    color: var(--text-dark);
    font-weight: 600;
    transition: all 0.4s;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    border: 1px solid var(--platinum-dark);
}

.pagination a:hover {
    background: linear-gradient(145deg, var(--platinum-dark), var(--platinum));
    color: var(--gold-accent);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 友情链接 - 金属质感 */
.friend-links {
    background: linear-gradient(145deg, var(--platinum), var(--platinum-dark));
    border-radius: 15px;
    padding: 40px;
    margin: 50px 0;
    box-shadow: var(--shadow);
    border: 1px solid var(--platinum-dark);
}

.friend-links h3 {
    margin-bottom: 25px;
    color: var(--text-dark);
    font-size: 24px;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

.friend-links h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: var(--gold-accent);
}

.friend-links-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.friend-links-container a {
    padding: 10px 20px;
    border-radius: 30px;
    background: rgba(255,255,255,0.8);
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.4s;
    border: 1px solid var(--platinum-dark);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.friend-links-container a:hover {
    background: var(--gold-accent);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 页脚样式 */
footer {
    background: linear-gradient(145deg, #333, #222);
    padding: 40px 0;
    text-align: center;
    margin-top: 80px;
    position: relative;
    z-index: 2;
}

.copyright {
    font-size: 16px;
    color: var(--platinum);
    letter-spacing: 1px;
}

/* 视差背景层 */
.parallax-bg-1 {
    background-image: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('https://images.unsplash.com/photo-1517245386807-bb43f82c33c4?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
}

.parallax-bg-2 {
    background-image: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
}

/* 响应式设计 */
@media (max-width: 992px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .article-title {
        font-size: 32px;
    }
    
    .main-content {
        padding: 30px;
    }
}

@media (max-width: 768px) {
    .article-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .article-meta {
        gap: 15px;
    }
    
    .friend-links-container a {
        padding: 8px 15px;
    }
}