/* =====================================
   首页 (index.html) 专属样式
===================================== */
.hero-section {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 60px;
}

.slogan {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -1.5px;
    text-transform: uppercase;
}

.search-container {
    margin-bottom: 10px;
}

.search-input {
    background: transparent;
    border: 1px solid var(--text-charcoal);
    padding: 8px 12px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-charcoal);
    width: 220px;
    outline: none;
    border-radius: 0;
}

.search-input::placeholder {
    color: var(--text-charcoal);
    opacity: 0.4;
}

.search-input:focus {
    border-color: var(--accent-red);
}

/* 操作栏 */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--accent-red);
    border-bottom: 1px solid var(--accent-red);
    padding: 16px 0;
    margin-bottom: 80px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.filters a {
    margin-right: 24px;
}

.filters a:hover,
.filters a.active {
    color: var(--accent-red);
}

/* 瀑布流网格 */
.masonry-grid {
    column-count: 3;
    column-gap: 40px;
}

.card {
    break-inside: avoid;
    margin-bottom: 60px;
}

/* ==========================================================================
   首页文章卡片与图片自适应修复方案 (绝对生效版)
   ========================================================================== */

/* 1. 卡片外层容器：限制最大宽度并使用严谨的网格比例 */
.card-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10; /* 锁定 16:10 黄金比例，契合瑞士风格 */
    overflow: hidden;
    display: block;
    background-color: #eee; /* 图片加载前的底色防闪烁 */
    margin-bottom: 16px;
}

/* 2. 核心自适应：强制图片撑满、裁剪、不变形 */
.card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important; /* 核心：壁纸级平铺裁剪，绝不拉伸 */
    display: block;
    transition: transform 0.4s ease;
}

/* 3. 悬浮微交互动效 */
.article-card:hover .card-image img {
    transform: scale(1.03);
}

.card-title {
    font-size: 1.4rem;
    font-weight: 900;
    text-transform: uppercase;
    line-height: 1.15;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.card-title a:hover {
    color: var(--accent-red);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--accent-red);
    border-top: 1px solid rgba(230, 57, 70, 0.2);
    padding-top: 10px;
}

.like-btn {
    cursor: pointer;
    user-select: none;
    transition: transform 0.2s ease;
}

.like-btn:hover {
    transform: scale(1.1);
}

@media (max-width: 1024px) {
    .masonry-grid { column-count: 2; }
}

@media (max-width: 768px) {
    .masonry-grid { column-count: 1; }
    .hero-section {
        flex-direction: column;
        align-items: flex-start;
        gap: 40px;
    }
    .slogan { font-size: 2.5rem; }
}