/* ==========================================================
   子页面统一样式
   为旧版页面内容（卡片、文章列表、详情页等）提供与新首页
   一致的深色科技风样式。
   ========================================================== */

/* 页面公共 Hero */
.page-hero {
    position: relative;
    text-align: center;
    padding: calc(var(--header-height) + 5rem) 1.5rem 5rem;
    background: var(--gradient-hero);
    overflow: hidden;
    margin-top: 0;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(circle at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(circle at center, black 0%, transparent 70%);
}

.page-hero > * {
    position: relative;
    z-index: 1;
}

.page-hero .eyebrow {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 9999px;
    color: var(--accent-300);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.page-hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.page-hero .gradient-text,
.page-hero .highlight {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-hero p {
    color: var(--primary-400);
    max-width: 700px;
    margin: 0 auto 2rem;
    font-size: 1.1rem;
    line-height: 1.7;
}

/* 按钮兼容旧版 class */
.page-main .actions,
.actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.page-main .actions:only-child,
.actions:only-child,
.page-hero .actions,
.actions[style*="justify-content:center"] {
    justify-content: center;
}

.page-main .btn,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-base);
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid transparent;
}

.page-main .btn.primary,
.btn.primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-glow);
}

.page-main .btn.primary:hover,
.btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.5);
}

.page-main .btn.secondary,
.btn.secondary,
.page-main .btn:not(.primary),
.btn:not(.primary) {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: white;
}

.page-main .btn.secondary:hover,
.btn.secondary:hover,
.page-main .btn:not(.primary):hover,
.btn:not(.primary):hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

/* 卡片与网格 */
.page-main {
    min-height: 60vh;
    padding-bottom: 4rem;
}

.page-main .section,
.section {
    padding: 0 1.5rem;
    margin-bottom: 4rem;
}

.page-main .grid,
.grid {
    display: grid;
    gap: 1.5rem;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 4rem 0;
}

.page-main .grid.two,
.grid.two {
    grid-template-columns: repeat(2, 1fr);
}

.page-main .grid.three,
.grid.three {
    grid-template-columns: repeat(3, 1fr);
}

.page-main .grid.four,
.grid.four {
    grid-template-columns: repeat(4, 1fr);
}

.page-main .card,
.card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.page-main .card:hover,
.card:hover {
    transform: translateY(-6px);
    border-color: rgba(59, 130, 246, 0.2);
    box-shadow: var(--shadow-lg);
    background: rgba(30, 41, 59, 0.7);
}

.page-main .card .icon,
.card .icon {
    width: 52px;
    height: 52px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-400);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
}

.page-main .card h3,
.card h3 {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.page-main .card p,
.card p {
    color: var(--primary-400);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

/* 信息面板 */
.info-panel {
    max-width: 850px;
    margin: 0 auto;
    padding: 3rem;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
}

.info-panel h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-list,
.contact-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.contact-list > div,
.contact-grid > div,
.contact-list div,
.contact-grid div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.contact-list dt,
.contact-grid dt {
    color: var(--primary-400);
    font-weight: 500;
}

.contact-list dd,
.contact-grid dd {
    color: white;
    font-weight: 600;
    margin: 0;
}

.contact-list a,
.contact-grid a {
    color: var(--accent-400);
    transition: color var(--transition-fast);
}

.contact-list a:hover,
.contact-grid a:hover {
    color: var(--cyan-400);
}

/* 文章详情页 */
.article-detail {
    max-width: 850px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
}

.article-header {
    text-align: center;
    margin-bottom: 3rem;
}

.article-header .eyebrow {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 9999px;
    color: var(--accent-400);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.article-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: white;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.article-meta {
    color: var(--primary-500);
    font-size: 0.95rem;
}

.article-body {
    color: var(--primary-300);
    line-height: 1.9;
    font-size: 1.05rem;
}

.article-body p,
.article-body div,
.article-body section {
    margin-bottom: 1.5rem;
}

.article-body img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: 1.5rem 0;
}

.article-body a {
    color: var(--accent-400);
    border-bottom: 1px solid rgba(59, 130, 246, 0.3);
    transition: all var(--transition-fast);
}

.article-body a:hover {
    color: var(--cyan-400);
    border-bottom-color: var(--cyan-400);
}

.article-footer-link {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--primary-400);
    text-align: center;
}

.article-footer-link a {
    color: var(--accent-400);
    transition: color var(--transition-fast);
}

.article-footer-link a:hover {
    color: var(--cyan-400);
}

/* 新闻列表 */
.news-list-section {
    padding: 4rem 1.5rem;
}

.news-list {
    max-width: 950px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.year-heading {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    margin-top: 2.5rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.news-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.news-item:hover {
    border-color: rgba(59, 130, 246, 0.2);
    background: rgba(30, 41, 59, 0.6);
    transform: translateX(5px);
}

.news-item time {
    color: var(--accent-400);
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
    min-width: 90px;
}

.news-cat {
    padding: 0.25rem 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 9999px;
    color: var(--accent-300);
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.news-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.5;
    margin: 0;
}

.news-item h3 a {
    color: white;
    transition: color var(--transition-fast);
}

.news-item h3 a:hover {
    color: var(--accent-400);
}

/* 二维码 */
.qrcode-panel {
    display: inline-block;
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
}

.qrcode-panel img {
    max-width: 600px;
    width: 100%;
    height: auto;
    display: block;
}

/* 404 等特殊页面 */
.page-hero .actions:only-child {
    justify-content: center;
}

/* 兼容旧版 skip-link 隐藏 */
.skip-link {
    position: absolute;
    left: -9999px;
    top: -9999px;
}

/* 响应式 */
@media (max-width: 768px) {
    .page-hero {
        padding: calc(var(--header-height) + 4rem) 1.5rem 4rem;
    }

    .page-hero h1 {
        font-size: 1.875rem;
    }

    .page-main .grid.two,
    .grid.two,
    .page-main .grid.three,
    .grid.three,
    .page-main .grid.four,
    .grid.four {
        grid-template-columns: 1fr;
    }

    .info-panel {
        padding: 2rem;
    }

    .contact-list > div,
    .contact-grid > div,
    .contact-list div,
    .contact-grid div {
        flex-direction: column;
        align-items: flex-start;
    }

    .news-item {
        flex-direction: column;
    }

    .news-item h3 {
        margin-top: 0.5rem;
    }

    .article-detail {
        padding: 3rem 1.5rem;
    }

    .actions {
        justify-content: center;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .card,
    .info-panel {
        padding: 1.5rem;
    }

    .qrcode-panel {
        padding: 1rem;
    }
}