/* 综合介绍页 - 卡片网格样式 */

body:has(.intro-page) {
    background: #fafafa;
}

[data-theme="dark"] body:has(.intro-page) {
    background: #0c0c0c;
}

/* 顶部 */
.intro-page .intro-hero {
    text-align: center;
    padding: 88px 22px 56px;
    max-width: 560px;
    margin: 0 auto;
}

.intro-page .intro-hero .intro-title {
    font-size: 36px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.intro-page .intro-hero .intro-desc {
    font-size: 17px;
    color: #666;
    line-height: 1.5;
}

/* 三列卡片网格 */
.intro-page .intro-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 22px 80px;
}

.intro-page .intro-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.intro-page .intro-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.12);
}

.intro-page .intro-card-img {
    display: block;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: #eee;
}

.intro-page .intro-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.intro-page .intro-card:hover .intro-card-img img {
    transform: scale(1.05);
}

.intro-page .intro-card-body {
    display: flex;
    flex-direction: column;
    padding: 24px 20px;
    min-height: 0;
}

.intro-page .intro-card-title {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.3;
    color: #1a1a1a;
    margin-bottom: 10px;
    display: block;
}

.intro-page .intro-card-text {
    font-size: 14px;
    color: #666;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.intro-page .intro-card-link {
    font-size: 15px;
    font-weight: 500;
    color: #0071e3;
    margin-top: 14px;
    display: inline-block;
    transition: color 0.2s;
}

.intro-page .intro-card:hover .intro-card-link {
    color: #2997ff;
}

/* 入场动画 */
.intro-page .intro-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.intro-page .intro-card.active {
    opacity: 1;
    transform: translateY(0);
}

.intro-page .intro-card.active:hover {
    transform: translateY(-6px);
}

/* 响应式 */
@media (max-width: 900px) {
    .intro-page .intro-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 20px 60px;
    }

    .intro-page .intro-card {
        flex-direction: row;
        align-items: stretch;
    }

    .intro-page .intro-card-img {
        width: 140px;
        min-width: 140px;
        aspect-ratio: 1;
    }

    .intro-page .intro-card-body {
        padding: 20px;
        justify-content: center;
    }

    .intro-page .intro-card-title {
        font-size: 17px;
    }

    .intro-page .intro-card-text {
        -webkit-line-clamp: 2;
    }
}

@media (max-width: 600px) {
    .intro-page .intro-hero {
        padding: 72px 18px 40px;
    }

    .intro-page .intro-hero .intro-title {
        font-size: 28px;
    }

    .intro-page .intro-card {
        flex-direction: column;
    }

    .intro-page .intro-card-img {
        width: 100%;
        min-width: 0;
        aspect-ratio: 16/10;
    }
}

/* 暗色模式 */
[data-theme="dark"] .intro-page .intro-hero .intro-title,
[data-theme="dark"] .intro-page .intro-card-title {
    color: #f5f5f5;
}

[data-theme="dark"] .intro-page .intro-hero .intro-desc,
[data-theme="dark"] .intro-page .intro-card-text {
    color: #a1a1a6;
}

[data-theme="dark"] .intro-page .intro-card {
    background: #1c1c1e;
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

[data-theme="dark"] .intro-page .intro-card:hover {
    box-shadow: 0 12px 28px rgba(0,0,0,0.5);
}

[data-theme="dark"] .intro-page .intro-card-img {
    background: #2c2c2e;
}

[data-theme="dark"] .intro-page .intro-card-link {
    color: #2997ff;
}

[data-theme="dark"] .intro-page .intro-card:hover .intro-card-link {
    color: #5eb3ff;
}