/* ===== 极简卡片网格布局 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: #fff;
    color: #000;
    line-height: 1.7;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    opacity: 0.6;
}

/* ===== 顶部导航 ===== */
.header-q7s2 {
    border-bottom: 1px solid #eee;
    padding: 1.2rem 0;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 100;
}

.header-inner-q7s2 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-q7s2 {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: bold;
    font-size: 1.1rem;
}

.logo-q7s2 img {
    width: 32px;
    height: 32px;
    border-radius: 3px;
}

.nav-q7s2 {
    display: flex;
    gap: 2rem;
    font-size: 0.9rem;
}

.nav-q7s2 a {
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
    transition: border-color 0.3s;
}

.nav-q7s2 a:hover {
    border-bottom-color: #000;
    opacity: 1;
}

/* ===== 主体 ===== */
.main-q7s2 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* ===== 英雄卡片 ===== */
.hero-card-q7s2 {
    border: 1px solid #eee;
    padding: 2rem;
    margin-bottom: 2rem;
    background: #fafafa;
}

.hero-inner-q7s2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.hero-text-q7s2 h1 {
    font-size: 2rem;
    margin-bottom: 0.6rem;
}

.hero-text-q7s2 p {
    font-size: 1rem;
    color: #666;
    margin-bottom: 1.5rem;
}

.btn-main-q7s2 {
    display: inline-block;
    border: 1px solid #000;
    padding: 0.7rem 1.8rem;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.btn-main-q7s2:hover {
    background-color: #000;
    color: #fff;
}

.hero-image-q7s2 img {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== 卡片网格 ===== */
.cards-grid-q7s2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card-item-q7s2 {
    border: 1px solid #eee;
    padding: 1.5rem;
    background: #fafafa;
}

.card-item-q7s2 h2 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.card-content-q7s2 {
    font-size: 0.95rem;
    line-height: 1.7;
    color: #333;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.card-content-q7s2 p {
    margin-bottom: 0.8rem;
}

.card-content-q7s2 h2,
.card-content-q7s2 h3 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.card-content-q7s2 ul,
.card-content-q7s2 ol {
    margin-left: 1.5rem;
    margin-bottom: 0.8rem;
}

.card-content-q7s2 li {
    margin-bottom: 0.3rem;
}

/* ===== 特殊卡片样式 ===== */
.card-image-q7s2 {
    display: flex;
    flex-direction: column;
}

.card-image-q7s2 img {
    width: 100%;
    height: auto;
    display: block;
    margin-top: 0.5rem;
}

.card-guide-fullwidth-q7s2 {
    grid-column: 1 / -1;
}

.card-fullwidth-q7s2 {
    grid-column: 1 / -1;
}

.card-download-q7s2 {
    text-align: center;
}

.card-download-q7s2 p {
    color: #666;
    margin-bottom: 1rem;
}

.btn-secondary-q7s2 {
    display: inline-block;
    background-color: #000;
    color: #fff;
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
    border: 1px solid #000;
    transition: all 0.3s;
}

.btn-secondary-q7s2:hover {
    background-color: #fff;
    color: #000;
}

/* ===== 标签卡片 ===== */
.card-tags-q7s2 {
    grid-column: 1 / -1;
}

.tags-box-q7s2 {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.tags-box-q7s2 span {
    border: 1px solid #ddd;
    padding: 0.3rem 0.8rem;
    font-size: 0.85rem;
    background: #fff;
}

/* ===== 截图库卡片 ===== */
.card-gallery-q7s2 {
    grid-column: 1 / -1;
}

.gallery-grid-q7s2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.gallery-grid-q7s2 img {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== 友情链接卡片 ===== */
.card-links-q7s2 {
    grid-column: 1 / -1;
}

.links-box-q7s2 {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.links-box-q7s2 li {
    flex: 1 1 calc(50% - 0.5rem);
    min-width: 150px;
}

.links-box-q7s2 a {
    display: block;
    padding: 0.5rem;
    border: 1px solid #eee;
    text-align: center;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.links-box-q7s2 a:hover {
    border-color: #000;
    background: #fafafa;
    opacity: 1;
}

/* ===== 页脚 ===== */
.footer-q7s2 {
    border-top: 1px solid #eee;
    padding: 2rem 1rem;
    text-align: center;
    font-size: 0.85rem;
    color: #999;
    margin-top: 2rem;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .hero-inner-q7s2 {
        grid-template-columns: 1fr;
    }

    .cards-grid-q7s2 {
        grid-template-columns: 1fr;
    }

    .hero-card-q7s2 {
        padding: 1.2rem;
    }

    .card-item-q7s2 {
        padding: 1.2rem;
    }

    .hero-text-q7s2 h1 {
        font-size: 1.6rem;
    }

    .card-content-q7s2 {
        font-size: 0.9rem;
    }

    .gallery-grid-q7s2 {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 0.8rem;
    }
}

@media (max-width: 480px) {
    .header-inner-q7s2 {
        flex-direction: column;
        gap: 0.8rem;
        text-align: center;
    }

    .nav-q7s2 {
        gap: 1.2rem;
        font-size: 0.8rem;
    }

    .main-q7s2 {
        padding: 0.8rem;
    }

    .hero-card-q7s2 {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }

    .hero-text-q7s2 h1 {
        font-size: 1.3rem;
    }

    .hero-text-q7s2 p {
        font-size: 0.9rem;
    }

    .btn-main-q7s2 {
        padding: 0.5rem 1.2rem;
        font-size: 0.8rem;
    }

    .cards-grid-q7s2 {
        gap: 1rem;
        margin-bottom: 1.5rem;
    }

    .card-item-q7s2 {
        padding: 1rem;
    }

    .card-item-q7s2 h2 {
        font-size: 1rem;
    }

    .card-content-q7s2 {
        font-size: 0.9rem;
    }

    .gallery-grid-q7s2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
    }

    .links-box-q7s2 li {
        flex: 1 1 calc(50% - 0.5rem);
    }

    .btn-secondary-q7s2 {
        padding: 0.5rem 1.2rem;
        font-size: 0.85rem;
    }
}