.article-hero-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 300px;
    background: var(--hero-gradient);
    z-index: 0;
}

.article-wrapper {
    position: relative;
    z-index: 1;
    padding-top: 90px;
}

.article-container {
    margin: 20px auto 0;
    max-width: 1100px;
    padding: 0 20px 2rem;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 1rem;
    min-height: calc(100vh - 70px);
}

.article-main {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.article-header {
    padding: 1.5rem 2rem 1rem;
    border-bottom: 2px solid #e2e8f0;
    background: linear-gradient(180deg, rgba(240, 249, 255, 0.5) 0%, rgba(255, 255, 255, 0) 100%);
    text-align: center;
}

.article-title {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.article-title-divider {
    height: 1px;
    width: 100%;
    max-width: 600px;
    margin: 0.5rem auto 1rem;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(6, 182, 212, 0.3) 20%,
        rgba(6, 182, 212, 0.6) 50%,
        rgba(6, 182, 212, 0.3) 80%,
        transparent 100%
    );
    border-radius: 3px;
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: #64748b;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.article-category {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
    text-decoration: none;
    transition: all 0.2s;
}

.article-category:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(6, 182, 212, 0.3);
}

.article-content {
    padding: 1.5rem 2rem;
}

.article-body {
    font-size: 1rem;
    line-height: 1.6;
    color: #1e293b;
}

.article-body * {
    font-family: inherit !important;
    text-align: start !important;
}

.article-body > p {
    color: #1e293b !important;
    font-size: 1rem !important;
    line-height: 1.6 !important;
    margin: 0 0 1rem 0 !important;
    padding: 0 !important;
}

.article-body [style*="background"] {
    background-color: unset;
}

.article-body [style*="background"] * {
    background-color: unset;
}

.article-body div[style*="background"] p,
.article-body div[style*="background"] h2,
.article-body div[style*="background"] h3 {
    color: inherit !important;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 0.8rem;
    color: #1e293b;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
}

.article-body h2:first-child {
    margin-top: 0;
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
    color: #1e293b;
}

.article-body h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1.2rem 0 0.4rem;
    color: #1e293b;
}

.article-body ul,
.article-body ol {
    margin: 1rem 0 1rem 1.5rem;
}

.article-body li {
    margin-bottom: 0.4rem;
}

.article-body pre {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
    font-size: 0.85rem;
    line-height: 1.5;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.article-body code {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
    padding: 0.15rem 0.3rem;
    border-radius: 4px;
    font-size: 0.85em;
    font-family: 'Courier New', monospace;
}

.article-body pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.article-body blockquote {
    border-left: 4px solid #06b6d4;
    padding: 0.8rem 1.2rem;
    margin: 1rem 0;
    color: #64748b;
    font-style: italic;
    background: linear-gradient(90deg, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
    border-radius: 0 8px 8px 0;
}

.article-body img {
    max-width: 100%;
    height: auto;
    margin: 1rem 0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.article-body table {
    width: 100%;
    margin: 1rem 0;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.article-body table th,
.article-body table td {
    padding: 0.6rem;
    border: 1px solid #e2e8f0;
}

.article-body table th {
    background: #f8fafc;
    font-weight: 600;
}

.article-body table tr:nth-child(even) {
    background: rgba(248, 250, 252, 0.5);
}

.article-body a {
    color: #06b6d4;
    text-decoration: underline;
}

.article-body a:hover {
    color: #0891b2;
}

.topic-header {
    padding: 1.5rem 2rem 1rem;
    border-bottom: 2px solid #e2e8f0;
    background: linear-gradient(180deg, rgba(240, 249, 255, 0.5) 0%, rgba(255, 255, 255, 0) 100%);
}

.topic-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    color: #1e293b;
}

.topic-description {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.2rem;
}

.article-list {
    padding: 0 2rem;
}

.article-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.article-item:last-child {
    border-bottom: none;
}

.article-item-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.article-item-title a {
    color: #1e293b;
    text-decoration: none;
    transition: color 0.2s;
}

.article-item-title a:hover {
    color: #06b6d4;
}

.article-item-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: #64748b;
    margin-bottom: 0.75rem;
}

.article-item-excerpt {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-item-link {
    color: #06b6d4;
    font-size: 0.9rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    display: inline-block;
}

.article-item-link:hover {
    color: #0891b2;
    transform: translateX(3px);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-text {
    color: #64748b;
    font-size: 1rem;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 2rem;
    border-top: 1px solid #e2e8f0;
}

.pagination-btn {
    padding: 0.5rem 1rem;
    background: #f8fafc;
    color: #1e293b;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.pagination-btn:hover {
    background: #06b6d4;
    color: white;
}

.pagination-numbers {
    display: flex;
    gap: 0.3rem;
}

.pagination-number {
    min-width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8fafc;
    color: #1e293b;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.pagination-number:hover {
    background: #06b6d4;
    color: white;
}

.pagination-number.active {
    background: #06b6d4;
    color: white;
    font-weight: 600;
}

.article-sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
    align-self: start;
}

.sidebar-card {
    background: white;
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid #e2e8f0;
}

.author-card {
    background: white;
    padding: 10px 20px;
}

.author-info {
    text-align: center;
    padding: 0.75rem 0;
}

.author-avatar {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    border-radius: 50%;
    margin: 0 auto 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    box-shadow: 0 3px 10px rgba(6, 182, 212, 0.3);
}

.author-name {
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: #1e293b;
    font-size: 0.95rem;
}

.author-bio {
    font-size: 0.8rem;
    color: #64748b;
    line-height: 1.4;
}

.quick-nav-card {
    background: white;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.quick-nav-section {
    padding: 0.75rem 1.25rem 0.75rem;
}

.quick-nav-section:last-child {
    padding-bottom: 1rem;
}

.quick-nav-section-divider {
    height: 1px;
    background: #e2e8f0;
    margin: 0 -1.25rem;
}

.quick-nav-category-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.6rem;
    gap: 0;
}

.quick-nav-category-header::before,
.quick-nav-category-header::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, #06b6d4 100%);
}

.quick-nav-category-header::after {
    background: linear-gradient(90deg, #06b6d4 0%, transparent 100%);
}

.quick-nav-category-name {
    font-weight: 600;
    color: #1e293b;
    font-size: 0.85rem;
    padding: 0.25rem 0.6rem;
    border: 1px solid #06b6d4;
    border-radius: 4px;
    background: rgba(6, 182, 212, 0.05);
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

a.quick-nav-category-name:hover {
    background: rgba(6, 182, 212, 0.1);
    color: #0891b2;
    border-color: #0891b2;
}

.quick-nav-items-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
    margin-top: 0.5rem;
}

.quick-nav-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem 0.3rem;
    background: #f8fafc;
    border-radius: 8px;
    text-decoration: none;
    color: #1e293b;
    transition: all 0.2s;
    font-size: 0.8rem;
    border: 1px solid transparent;
}

.quick-nav-item:hover {
    background: white;
    border-color: #06b6d4;
    transform: translateY(-2px);
    box-shadow: 0 3px 6px rgba(6, 182, 212, 0.15);
}

.quick-nav-item-name {
    font-weight: 500;
    color: #1e293b;
    transition: color 0.2s;
}

.quick-nav-item:hover .quick-nav-item-name {
    color: #06b6d4;
}

.article-footer {
    border-top: 1px solid #e2e8f0;
    padding: 1rem 2rem;
    background: #f8fafc;
}

.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.article-nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.8rem;
    background: white;
    border-radius: 6px;
    text-decoration: none;
    border: 1px solid #e2e8f0;
    transition: all 0.2s;
    overflow: hidden;
    min-width: 0;
}

.article-nav-item:hover {
    border-color: #06b6d4;
    box-shadow: 0 2px 8px rgba(6, 182, 212, 0.15);
}

.article-nav-item.prev {
    justify-content: flex-start;
}

.article-nav-item.next {
    justify-content: flex-end;
}

.nav-label {
    font-size: 0.75rem;
    color: #06b6d4;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-title {
    font-size: 0.85rem;
    color: #1e293b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    flex: 1;
}

.related-card {
    background: white;
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid #e2e8f0;
}

.related-title {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 0.75rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #06b6d4;
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.related-item {
    padding: 0.6rem 0.75rem;
    background: #f8fafc;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s;
    overflow: hidden;
}

.related-item:hover {
    background: #f1f5f9;
    transform: translateX(3px);
}

.related-item-title {
    font-size: 0.85rem;
    color: #1e293b;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    line-height: 1.4;
}

   /* 英雄区域 */
    .promo-hero {
        background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
        color: #fff;
        padding: 1.5rem 0;
        text-align: center;
    }
    .promo-hero-inner {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    .promo-hero-title {
        font-size: 0.9rem;
        font-weight: 700;
        margin: 0;
    }
    .promo-hero-title i {
        margin-right: 0.5rem;
    }
    
    /* 倒计时 */
    .promo-countdown-wrapper {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
        margin-top: 5.5rem;
    }
    .promo-countdown {
        display: flex;
        align-items: center;
        gap: 0.8rem;
        background: rgba(0,0,0,0.2);
        padding: 0.8rem 1.8rem;
        border-radius: 50px;
    }
    .promo-countdown > i {
        margin-right: 0.4rem;
        font-size: 1.1rem;
    }
    .countdown-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        min-width: 50px;
    }
    .countdown-num {
        font-size: 1.6rem;
        font-weight: 700;
        line-height: 1;
    }
    .countdown-label {
        font-size: 0.75rem;
        opacity: 0.8;
        margin-top: 0.2rem;
    }
    .countdown-sep {
        font-size: 1.6rem;
        font-weight: 700;
        opacity: 0.6;
    }
    .promo-date-pills {
        display: flex;
        align-items: center;
        gap: 0.6rem;
    }
    .date-pill {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        background: rgba(255,255,255,0.15);
        padding: 0.4rem 1rem;
        border-radius: 50px;
        font-size: 0.9rem;
    }
    .date-pill i {
        font-size: 0.85rem;
        opacity: 0.8;
    }
    .date-pill-sep {
        font-size: 1rem;
        opacity: 0.6;
    }
    
    /* 主布局 */
    .promo-layout {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: 1.5rem;
        align-items: start;
        max-width: 1100px;
        margin: 0 auto;
        padding: 1.5rem 1rem;
    }
    
    /* 左边栏 */
    .section-block {
        background: #fff;
        border-radius: 12px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.06);
        overflow: hidden;
        border: 1px solid #e5e7eb;
    }
    .specs-title {
        padding: 0.8rem 1.2rem;
        border-bottom: 2px solid #e74c3c;
    }
    .specs-title h1 {
    font-size: 1.2rem;  /* 调整大小 */
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.specs-title h1 i {
    color: #e74c3c;
    font-size: 1.2rem;
}
    .specs-title h2 {
        margin: 0;
        font-size: 0.5rem;
        font-weight: 700;
        color: #e74c3c;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    .specs-title h2 i {
        font-size: 0.9rem;
    }
    .specs-list {
        padding: 0.6rem 1rem;
        border-bottom: 1px solid #e74c3c;
    }
    .spec-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.5rem 0.8rem;
        margin-bottom: 0.3rem;
        background: #f9fafb;
        border-radius: 6px;
        transition: background 0.2s;
    }
    .spec-row:last-child {
        margin-bottom: 0;
    }
    .spec-row:hover {
        background: #f3f4f6;
    }
    .spec-left {
        display: flex;
        align-items: center;
        gap: 0.6rem;
    }
    .spec-icon {
        width: 28px;
        height: 28px;
        background: rgba(231, 76, 60, 0.1);
        border-radius: 6px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .spec-icon i {
        color: #e74c3c;
        font-size: 0.8rem;
    }
    .spec-label {
        font-size: 0.8rem;
        font-weight: 500;
        color: #4b5563;
    }
    .spec-value {
        font-size: 0.85rem;
        font-weight: 600;
        color: #1f2937;
    }
    .spec-row.highlight-gpu {
        background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    }
    .spec-row.highlight-gpu .spec-icon {
        background: #f59e0b;
    }
    .spec-row.highlight-gpu .spec-icon i {
        color: #fff;
    }
    .spec-row.highlight-gpu:hover {
        background: linear-gradient(135deg, #fde68a 0%, #fcd34d 100%);
    }
    .section-content {
        padding: 1.2rem;
        border-bottom: 1px solid #e74c3c;
    }
    .promo-article-content {
        line-height: 1.8;
        color: #444;
        font-size: 0.9rem;
    }
    .promo-article-content h2 {
        font-size: 1.1rem;
        margin: 1.2rem 0 0.6rem;
        padding-bottom: 0.4rem;
        border-bottom: 2px solid #f3f4f6;
        color: #1f2937;
    }
    .promo-article-content h2:first-child {
        margin-top: 0;
    }
    .promo-article-content p {
        margin-bottom: 0.8rem;
    }
    .promo-article-content ul, .promo-article-content ol {
        margin: 0.8rem 0;
        padding-left: 1.2rem;
    }
    .promo-article-content li {
        margin-bottom: 0.3rem;
    }
    .section-footer {
        background: #f9fafb;
        padding: 0.8rem 1.2rem;
    }
    .footer-info {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 0.6rem;
    }
    .footer-stock {
        font-size: 0.85rem;
        color: #e74c3c;
        font-weight: 600;
    }
    .footer-stock i {
        margin-right: 0.3rem;
    }
    .footer-more {
        font-size: 0.8rem;
        color: #6b7280;
    }
    .footer-related {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.4rem;
    }
    .footer-related-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.5rem 0.6rem;
        background: #fff;
        border: 1px solid #e5e7eb;
        border-radius: 6px;
        text-decoration: none;
        transition: all 0.2s;
    }
    .footer-related-item:hover {
        border-color: #e74c3c;
        background: #fef2f2;
    }
    .footer-related-title {
        color: #374151;
        font-size: 0.75rem;
        flex: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .footer-related-price {
        color: #e74c3c;
        font-weight: 600;
        font-size: 0.75rem;
        margin-left: 0.4rem;
    }
    
    /* 价格卡片 */
    .price-card {
        background: #fff;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 4px 20px rgba(231,76,60,0.12);
        border: 1px solid #e74c3c;
       margin-bottom: 1rem;
    }
    .price-card-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.8rem 1rem;
        border-bottom: 2px solid #e74c3c;
    }
    .price-card-header .header-title {
        font-weight: 700;
        font-size: 0.9rem;
        color: #e74c3c;
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }
    .price-card-header .header-title i {
        font-size: 0.85rem;
    }
    .price-card-header .header-stock {
        font-size: 0.8rem;
        color: #4b5563;
    }
    .price-card-header .header-stock strong {
        color: #e74c3c;
        font-size: 0.9rem;
    }
    .price-row {
        padding: 0.8rem 1rem;
        border-bottom: 1px solid #e74c3c;
    }
    .price-row.no-border {
        border-bottom: none;
    }
    .price-row.original {
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: #6b7280;
        font-size: 1rem;
    }
    .price-row.original del {
        color: #9ca3af;
                font-size: 1.2rem;
    }
    .price-row.current {
        text-align: center;
        padding: 1rem;
    }
    .price-row.current .price-value {
        font-size: 2.4rem;
        font-weight: 800;
        color: #e74c3c;
        line-height: 1;
    }
    .price-row.current .price-period {
        font-size: 1rem;
        color: #6b7280;
    }

   .price-save {
           margin-top: 0.8rem;
    display: inline-flex;
    border-radius: 50px;
    overflow: hidden;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid #fde68a;
}

.stock-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}
.stock-badge.in-stock {
    background: #d1fae5;
    color: #059669;
}
.stock-badge.out-stock {
    background: #fee2e2;
    color: #dc2626;
}
.save-main {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    padding: 0.3rem 0.6rem 0.3rem 1rem;
}
.save-main i {
    margin-right: 0.3rem;
}
.save-percent {
    background: #fff;
    color: #e74c3c;
    padding: 0.3rem 1rem 0.3rem 0.6rem;
    font-weight: 700;
    border-left: 1px solid #fde68a;
}
    
.btn-order {
    display: block;
    width: 100%;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: #fff;
    padding: 0.8rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s;
    margin: 0.8rem 0;
    animation: pulse-red 2s infinite;
}
    @keyframes pulse-red {
        0% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.4); }
        70% { box-shadow: 0 0 0 10px rgba(231, 76, 60, 0); }
        100% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0); }
    }
    .btn-order:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(231,76,60,0.35);
        color: #fff;
    }
    .btn-order i {
        margin-right: 0.4rem;
    }
    .btn-order.btn-disabled {
    background: #9ca3af;
    cursor: not-allowed;
    animation: none;
}
.btn-order.btn-disabled:hover {
    transform: none;
    box-shadow: none;
}
    .btn-contact {
        display: block;
        width: 100%;
        background: #f3f4f6;
        color: #374151;
        padding: 0.5rem;
        margin-top: 1rem;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 0.85rem;
        text-decoration: none;
        text-align: center;
        transition: all 0.2s;
    }
    .btn-contact:hover {
        background: #e5e7eb;
    }
    .btn-contact i {
        margin-right: 0.4rem;
    }
    .guarantee-text {
        font-size: 0.7rem;
        color: #6b7280;
        text-align: center;
        margin-top: 0.8rem;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.6rem;
    }
    .guarantee-text span {
        display: flex;
        align-items: center;
        gap: 0.2rem;
    }
    .guarantee-text i {
        color: #27ae60;
    }
    
    /* 促销文章内的表格样式 */
.promo-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.9rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.promo-article-content table th,
.promo-article-content table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.promo-article-content table th {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: #fff;
    font-weight: 600;
}

.promo-article-content table tr:nth-child(even) {
    background: #f9fafb;
}

.promo-article-content table tr:hover {
    background: #fef2f2;
}

.promo-article-content table tr:last-child td {
    border-bottom: none;
}

/* 高亮当前方案行 */
.promo-article-content table tr:last-child {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    font-weight: 600;
}

.promo-article-content table tr:last-child:hover {
    background: linear-gradient(135deg, #fde68a 0%, #fcd34d 100%);
}
.promo-no-countdown {
    display: flex;
    align-items: center;
    justify-content: center;
}

.promo-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.2);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
}

.promo-badge i {
    font-size: 1rem;
}
/* 付款周期样式 */
.price-row.billing-cycle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-bottom: none;
}

.billing-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
}

.billing-badge i {
    font-size: 0.8rem;
}

.monthly-equiv {
    color: rgba(255,255,255,0.9);
    font-size: 0.8rem;
    background: rgba(255,255,255,0.15);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
}

.price-row.setup-fee {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #6b7280;
}

.setup-fee-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.7rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.setup-fee-badge.free {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #059669;
}

.setup-fee-badge.free i {
    font-size: 0.7rem;
}

.setup-fee-badge.paid {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #dc2626;
}
@media (max-width: 1024px) {
    .article-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        min-height: auto;
        margin: 40px auto 0;
    }
    
    .article-sidebar {
        position: static;
        margin-top: 0.2rem;
    }
}

@media (max-width: 768px) {
    /* 基础容器修复 */
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0 12px;
        box-sizing: border-box;
    }
    
    .article-wrapper {
        padding-top: 60px;
    }
    
    .article-container {
        padding: 0 12px 1.2rem;
        gap: 1rem;
        grid-template-columns: 1fr;
        min-height: auto;
        margin: 40px auto 0;
    }
    
    .article-sidebar {
        position: static;
        margin-top: 0.2rem;
    }
    
    .article-header {
        padding: 0.8rem 1rem 0.6rem;
    }
    
    .article-title {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    .article-title-divider {
        margin: 0.4rem auto 0.6rem;
    }
    
    .article-meta {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.4rem 0.5rem;
        font-size: 0.65rem;
        justify-items: start;
    }
    
    .article-category {
        justify-self: start;
        font-size: 0.62rem;
        padding: 0.12rem 0.35rem;
    }
    
    .article-content {
        padding: 0.8rem 1rem;
    }
    
    .article-body {
        font-size: 0.75rem;
        line-height: 1.6;
    }
    
    .article-body p {
        font-size: 0.75rem !important;
        line-height: 1.6 !important;
        margin: 0 0 0.7rem 0 !important;
    }
    
    .article-body h2 {
        font-size: 0.85rem;
        margin: 1rem 0 0.4rem;
    }
    
    .article-body h3 {
        font-size: 0.8rem;
        margin: 0.8rem 0 0.35rem;
    }
    
    .article-body h4 {
        font-size: 0.75rem;
        margin: 0.7rem 0 0.3rem;
    }
    
    .topic-header {
        padding: 0.8rem 1rem 0.6rem;
    }
    
    .topic-title {
        font-size: 0.95rem;
        margin-bottom: 0.2rem;
    }
    
    .topic-description {
        font-size: 0.7rem;
        line-height: 1.5;
        margin-bottom: 0.1rem;
    }
    
    .article-list {
        padding: 0 1rem;
    }
    
    .article-item {
        padding: 0.9rem 0;
    }
    
    .article-item-title {
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .article-item-meta {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        margin-bottom: 0.4rem;
        font-size: 0.65rem;
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .article-item-excerpt {
        font-size: 0.7rem;
        line-height: 1.5;
    }
    
    .article-item-link {
        font-size: 0.68rem;
    }
    
    .empty-state {
        padding: 1.5rem 1rem;
    }
    
    .empty-icon {
        font-size: 1.8rem;
    }
    
    .empty-text {
        font-size: 0.75rem;
    }
    
    .pagination {
        padding: 0.9rem;
        gap: 0.3rem;
        flex-wrap: wrap;
    }
    
    .pagination-btn {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
    }
    
    .pagination-number {
        min-width: 1.5rem;
        height: 1.5rem;
        font-size: 0.7rem;
    }
    
    .author-card {
        padding: 8px 15px;
    }
    
    .author-avatar {
        width: 40px;
        height: 40px;
        font-size: 1.4rem;
    }
    
    .author-name {
        font-size: 0.8rem;
    }
    
    .author-bio {
        font-size: 0.7rem;
    }
    
    .sidebar-card {
        padding: 0.8rem;
        margin-bottom: 0.8rem;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .quick-nav-section {
        padding: 0.5rem 0.9rem;
    }
    
    .quick-nav-section:first-child {
        padding-top: 0.8rem;
    }
    
    .quick-nav-section:last-child {
        padding-bottom: 0.8rem;
    }
    
    .quick-nav-category-header {
        margin-bottom: 0.35rem;
    }
    
    .quick-nav-category-name {
        font-size: 0.72rem;
        padding: 0.18rem 0.45rem;
    }
    
    .quick-nav-items-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.3rem;
    }
    
    .quick-nav-item {
        padding: 0.4rem 0.3rem;
        font-size: 0.68rem;
    }
    
    .article-footer {
        padding: 0.8rem;
    }
    
    .article-nav {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .article-nav-item {
        justify-content: center;
    }
    
    .article-nav-item.prev,
    .article-nav-item.next {
        justify-content: center;
    }
    
    .nav-label {
        font-size: 0.7rem;
    }
    
    .nav-title {
        font-size: 0.75rem;
    }
    
    .related-card {
        padding: 0.8rem;
    }
    
    .related-list {
        gap: 0.4rem;
    }
    
    .related-item {
        padding: 0.5rem 0.6rem;
        overflow: hidden;
    }
    
    .related-item-title {
        font-size: 0.75rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: block;
        max-width: 36ch;
    }

    /* ========== 促销页面专用样式 ========== */
    
    .promo-hero {
        padding: 1rem 0;
    }
    
    .promo-countdown-wrapper {
        margin-top: 5rem;
        gap: 0.6rem;
    }
    
    .promo-countdown {
        padding: 0.6rem 1.2rem;
        gap: 0.5rem;
    }
    
    .countdown-num {
        font-size: 1.2rem;
    }
    
    .countdown-sep {
        font-size: 1.2rem;
    }
    
    .countdown-label {
        font-size: 0.65rem;
    }
    
    .countdown-item {
        min-width: 36px;
    }
    
    .date-pill {
        padding: 0.3rem 0.7rem;
        font-size: 0.75rem;
    }
    
    .date-pill i {
        font-size: 0.7rem;
    }
    
    .date-pill-sep {
        font-size: 0.85rem;
    }
    
    /* 主布局 - 关键修复 */
    .promo-layout {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        padding: 1rem 0;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }
    
    /* 让 sidebar 容器消失，子元素独立排序 */
    .article-sidebar {
        display: contents;
    }
    
    /* 关键修复：所有子元素设置100%宽度 */
    .price-card,
    .section-block,
    .sidebar-card.author-card,
    .sidebar-nav,
    .quick-nav-card {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    /* 重新排序 */
    .price-card {
        order: 1;
    }
    
    .section-block {
        order: 2;
    }
    
    .sidebar-card.author-card {
        order: 3;
        margin-bottom: 0;
        margin-top: 0;
    }
    
    .sidebar-nav,
    .quick-nav-card {
        order: 4;
        margin-top: 0;
    }
    
    /* 价格卡片 */
    .price-card {
        margin-bottom: 0;
        border-radius: 10px;
    }
    
    .price-card-header {
        padding: 0.6rem 0.8rem;
    }
    
    .price-card-header .header-title {
        font-size: 0.85rem;
    }
    
    .price-card-header .header-title i {
        font-size: 0.8rem;
    }
    
    .stock-badge {
        padding: 0.15rem 0.5rem;
        font-size: 0.7rem;
    }
    
    .price-row {
        padding: 0.6rem 0.8rem;
    }
    
    .price-row.original {
        font-size: 0.85rem;
    }
    
    .price-row.original del {
        font-size: 1rem;
    }
    
    .price-row.current {
        padding: 0.8rem;
    }
    
    .price-row.current .price-value {
        font-size: 2rem;
    }
    
    .price-row.current .price-period {
        font-size: 0.85rem;
    }
    
    .price-row.current .price-main {
        margin-bottom: 0.5rem;
    }
    
    .price-save {
        margin-top: 0.6rem;
        font-size: 0.75rem;
    }
    
    .save-main {
        padding: 0.25rem 0.5rem 0.25rem 0.8rem;
    }
    
    .save-percent {
        padding: 0.25rem 0.8rem 0.25rem 0.5rem;
    }
    
    .price-row.buttons {
        padding: 0.6rem 0.8rem 0.8rem;
    }
    
    .btn-order {
        padding: 0.7rem;
        font-size: 0.95rem;
        margin: 0.6rem 0;
    }
    
    .btn-contact {
        padding: 0.45rem;
        font-size: 0.8rem;
        margin-top: 0.6rem;
    }
    
    .guarantee-text {
        font-size: 0.65rem;
        gap: 0.5rem;
        margin-top: 0.6rem;
    }
    
    /* 作者卡片 */
    .author-card {
        padding: 8px 15px;
    }
    
    .author-avatar {
        width: 48px;
        height: 48px;
        font-size: 1.6rem;
    }
    
    .author-name {
        font-size: 0.85rem;
    }
    
    .author-bio {
        font-size: 0.75rem;
    }
    
    /* 左边栏卡片 */
    .section-block {
        border-radius: 10px;
    }
    
    .specs-title {
        padding: 0.6rem 1rem;
    }
    
    .specs-title h2 {
        font-size: 0.8rem;
    }
    
    .specs-title h2 i {
        font-size: 0.7rem;
    }
    
    .specs-list {
        padding: 0.5rem 0.8rem;
    }
    
    .spec-row {
        padding: 0.4rem 0.6rem;
        margin-bottom: 0.25rem;
    }
    
    .spec-icon {
        width: 24px;
        height: 24px;
    }
    
    .spec-icon i {
        font-size: 0.7rem;
    }
    
    .spec-label {
        font-size: 0.75rem;
    }
    
    .spec-value {
        font-size: 0.75rem;
    }
    
    .spec-left {
        gap: 0.5rem;
    }
    
    /* 内容区域 */
    .section-content {
        padding: 1rem;
    }
    
    .promo-article-content {
        font-size: 0.85rem;
    }
    
    .promo-article-content h2 {
        font-size: 1rem;
        margin: 1rem 0 0.5rem;
    }
    
    .promo-article-content p {
        margin-bottom: 0.7rem;
    }
    
    .promo-article-content ul,
    .promo-article-content ol {
        margin: 0.6rem 0;
        padding-left: 1rem;
    }
    
    /* 页脚区域 */
    .section-footer {
        padding: 0.7rem 1rem;
    }
    
    .footer-info {
        margin-bottom: 0.5rem;
    }
    
    .footer-stock {
        font-size: 0.75rem;
    }
    
    .footer-more {
        font-size: 0.7rem;
    }
    
    .footer-related {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }
    
    .footer-related-item {
        padding: 0.45rem 0.6rem;
    }
    
    .footer-related-title {
        font-size: 0.7rem;
    }
    
    .footer-related-price {
        font-size: 0.7rem;
    }
    
    /* 快速导航卡片 */
    .quick-nav-card {
        border-radius: 10px;
    }
       .promo-article-content table {
        font-size: 0.75rem;
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .promo-article-content table th,
    .promo-article-content table td {
        padding: 0.5rem 0.6rem;
        white-space: nowrap;
    }
     .price-row.billing-cycle {
        padding: 0.5rem 0.8rem;
    }
    
    .billing-badge {
        font-size: 0.75rem;
    }
    
    .billing-badge i {
        font-size: 0.7rem;
    }
    
    .monthly-equiv {
        font-size: 0.7rem;
        padding: 0.15rem 0.5rem;
    }
}