/* winnovation_articles.html — 文章 */

/* —— Article filter tabs —— */
.wh-filter {
    display: flex;
    gap: 0;
    overflow-x: auto;
    border-bottom: 1px solid var(--wh-line);
    margin-bottom: clamp(32px, 5vw, 48px);
    scrollbar-width: none;
}

.wh-filter::-webkit-scrollbar {
    display: none;
}

.wh-filter__btn {
    position: relative;
    flex: 0 0 auto;
    min-height: 48px;
    padding: 8px 20px;
    border: 0;
    background: transparent;
    font-family: var(--wh-font);
    font-size: var(--wh-fs-small);
    font-weight: 500;
    color: var(--wh-muted);
    cursor: pointer;
    transition: color 200ms ease;
}

.wh-filter__btn::after {
    position: absolute;
    right: 20px;
    bottom: -1px;
    left: 20px;
    height: 2px;
    background: var(--wh-accent);
    content: "";
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 200ms ease;
}

.wh-filter__btn:hover,
.wh-filter__btn.is-active {
    color: var(--wh-text);
}

.wh-filter__btn.is-active::after {
    transform: scaleX(1);
}

/* —— Article card grid —— */
.wh-article-grid {
    display: grid;
    grid-template-columns: repeat(var(--wh-cols), minmax(0, 1fr));
    gap: var(--wh-gap);
}

.wh-article-card {
    grid-column: span 6;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--wh-line);
    border-radius: 0;
    overflow: hidden;
    background: var(--wh-surface);
    transition: box-shadow 200ms ease, transform 200ms ease;
}

@media (min-width: 960px) {
    .wh-article-card {
        grid-column: span 4;
    }
}

.wh-article-card:hover {
    box-shadow: var(--wh-shadow-sm);
    transform: translateY(-2px);
}

.wh-article-card__media {
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.wh-article-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 300ms ease;
}

.wh-article-card:hover .wh-article-card__media img {
    transform: scale(1.03);
}

.wh-article-card__body {
    padding: clamp(16px, 2.5vw, 24px);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.wh-article-card__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.75rem;
    color: var(--wh-muted);
}

.wh-article-card__cat {
    font-weight: 600;
    color: var(--wh-accent);
}

.wh-article-card__body h3 {
    margin: 0;
    font-size: var(--wh-fs-h3);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.4;
}

.wh-article-card__body p {
    margin: 0;
    font-size: var(--wh-fs-small);
    line-height: 1.65;
    color: var(--wh-muted);
    flex: 1;
}

.wh-article-card__link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 8px;
    font-size: var(--wh-fs-small);
    font-weight: 600;
    color: var(--wh-text);
    text-decoration: none;
}

.wh-article-card__link:hover {
    color: var(--wh-accent);
}

/* —— Featured article (first/large) —— */
.wh-article-featured {
    grid-column: span 12;
    display: grid;
    grid-template-columns: repeat(var(--wh-cols), minmax(0, 1fr));
    gap: var(--wh-gap);
    align-items: center;
    border: 1px solid var(--wh-line);
    overflow: hidden;
    background: var(--wh-surface);
    margin-bottom: clamp(16px, 2vw, 24px);
}

.wh-article-featured__media {
    grid-column: span 12;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.wh-article-featured__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.wh-article-featured__body {
    grid-column: span 12;
    padding: clamp(20px, 3vw, 32px);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

@media (min-width: 960px) {
    .wh-article-featured__media {
        grid-column: span 7;
        aspect-ratio: auto;
        height: 100%;
    }

    .wh-article-featured__body {
        grid-column: span 5;
    }
}

.wh-article-featured__body h2 {
    margin: 0;
    font-size: var(--wh-fs-h2);
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.3;
}

.wh-article-featured__body p {
    margin: 0;
    font-size: var(--wh-fs-body);
    line-height: 1.7;
    color: var(--wh-muted);
}

@media (prefers-reduced-motion: reduce) {
    .wh-article-card,
    .wh-article-card__media img {
        transition: none !important;
    }

    .wh-article-card:hover {
        transform: none;
    }

    .wh-article-card:hover .wh-article-card__media img {
        transform: none;
    }
}