/* ─── Article Page Layout ─── */
.article-page-wrap {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2.5rem;
    max-width: 1200px;
    margin: 2rem auto 0;
    padding: 0 1.5rem 4rem;
    align-items: start;
}

.article-main {
    min-width: 0;
}

/* ─── Breadcrumb ─── */
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: #6B7280;
    margin-bottom: 1.75rem;
}

.breadcrumb a {
    color: #6B7280;
    text-decoration: none;
    transition: color 0.18s;
}

.breadcrumb a:hover {
    color: #00C897;
}

.breadcrumb-sep {
    color: #D1D5DB;
    font-size: 0.75rem;
}

.breadcrumb-current {
    color: #013B2F;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 260px;
}

/* ─── Article Header (injected by article-recommend.js) ─── */
.article-header {
    margin-bottom: 2.25rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #F3F4F6;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.article-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 200, 151, 0.1);
    color: #00C897;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.article-badge-latest {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.75rem;
    background: linear-gradient(135deg, #00C897, #00a87e);
    color: #fff;
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.article-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.3;
    color: #013B2F;
    margin: 0.75rem 0 1rem;
    letter-spacing: -0.02em;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.25rem;
    font-size: 0.82rem;
    color: #6B7280;
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.article-meta-item i {
    color: #00C897;
    font-size: 0.8rem;
}

.article-summary {
    margin-top: 1.25rem;
    padding: 1rem 1.25rem;
    background: #F8F4EF;
    border-left: 3px solid #00C897;
    border-radius: 0 0.75rem 0.75rem 0;
    font-size: 0.95rem;
    color: #374151;
    line-height: 1.7;
}

/* ─── Article Body ─── */
.article-body {
    font-size: 1rem;
    line-height: 1.85;
    color: #1F2937;
}

.article-body h2 {
    font-size: 1.45rem;
    font-weight: 800;
    color: #013B2F;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #F3F4F6;
    letter-spacing: -0.01em;
}

.article-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #013B2F;
    margin: 2rem 0 0.75rem;
}

.article-body h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #374151;
    margin: 1.5rem 0 0.5rem;
}

.article-body p {
    margin: 0 0 1.25rem;
}

.article-body a {
    color: #00C897;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: opacity 0.18s;
}

.article-body a:hover {
    opacity: 0.75;
}

.article-body ul,
.article-body ol {
    margin: 0 0 1.25rem 1.5rem;
}

.article-body ul li,
.article-body ol li {
    margin-bottom: 0.45rem;
}

.article-body ul {
    list-style: disc;
}

.article-body ol {
    list-style: decimal;
}

.article-body strong {
    color: #013B2F;
    font-weight: 700;
}

.article-body em {
    font-style: italic;
}

.article-body code {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.88em;
    background: #F3F4F6;
    color: #013B2F;
    padding: 0.15em 0.45em;
    border-radius: 0.3rem;
    overflow-wrap: break-word;
}

.article-body pre {
    background: #013B2F;
    color: #A7F3D0;
    padding: 1.25rem 1.5rem;
    border-radius: 0.875rem;
    overflow-x: auto;
    margin: 0 0 1.5rem;
    font-size: 0.875rem;
    line-height: 1.7;
}

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

.article-body blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    background: #F0FDF4;
    border-left: 4px solid #00C897;
    border-radius: 0 0.75rem 0.75rem 0;
    color: #374151;
    font-style: italic;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.article-body table th {
    background: #013B2F;
    color: #fff;
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 700;
}

.article-body table td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid #F3F4F6;
}

.article-body table tr:hover td {
    background: #F9FAFB;
}

/* Callout boxes inside article body */
.callout-tip {
    background: #F0FDF4;
    border: 1px solid #BBF7D0;
    border-radius: 0.875rem;
    padding: 1rem 1.25rem;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    margin: 1.5rem 0;
    font-size: 0.93rem;
}

.callout-warn {
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    border-radius: 0.875rem;
    padding: 1rem 1.25rem;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    margin: 1.5rem 0;
    font-size: 0.93rem;
}

.callout-info {
    background: #EFF6FF;
    border: 1px solid #BFDBFE;
    border-radius: 0.875rem;
    padding: 1rem 1.25rem;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    margin: 1.5rem 0;
    font-size: 0.93rem;
}

.callout-icon {
    font-size: 1.05rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

/* ─── Sidebar ─── */
.article-sidebar {
    position: sticky;
    top: 100px;
}

.toc-card {
    background: #fff;
    border: 1px solid #F3F4F6;
    border-radius: 1.25rem;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.toc-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: #9CA3AF;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-bottom: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.toc-title i {
    color: #00C897;
}

.toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.toc-list li a {
    display: block;
    padding: 0.4rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.83rem;
    color: #6B7280;
    text-decoration: none;
    transition: background 0.18s, color 0.18s;
    line-height: 1.4;
}

.toc-list li a:hover {
    background: #F9FAFB;
    color: #013B2F;
}

.toc-list li a.active {
    background: rgba(0, 200, 151, 0.1);
    color: #00C897;
    font-weight: 600;
}

/* ─── Product Recommend Block ─── */
.product-recommend {
    margin-top: 3rem;
    padding: 2.5rem;
    background: linear-gradient(135deg, #013B2F 0%, #01573f 100%);
    border-radius: 1.75rem;
    color: #fff;
}

.product-recommend-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #00C897;
    margin-bottom: 1rem;
}

.product-recommend h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    margin: 0 0 0.75rem;
    line-height: 1.3;
}

.product-recommend p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0 0 1.5rem;
}

.product-recommend-features {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.product-recommend-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.85);
}

.product-recommend-features li::before {
    content: '';
    display: inline-block;
    width: 1.1rem;
    height: 1.1rem;
    background: #00C897;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 0.15rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-size: contain;
}

.product-recommend-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #00C897;
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.85rem 2rem;
    border-radius: 100px;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.15s;
    box-shadow: 0 4px 20px rgba(0, 200, 151, 0.4);
}

.product-recommend-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* ─── Prev / Next Navigation ─── */
.article-nav-prev-next {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2.5rem;
}

.article-nav-card {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 1.25rem 1.5rem;
    border: 1.5px solid #F3F4F6;
    border-radius: 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, background 0.2s, transform 0.15s;
    background: #fff;
}

.article-nav-card:hover {
    border-color: #00C897;
    background: #F0FDFB;
    transform: translateY(-2px);
}

.article-nav-direction {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #9CA3AF;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.article-nav-prev .article-nav-direction::before {
    content: '←';
}

.article-nav-next {
    text-align: right;
}

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

.article-nav-next .article-nav-direction::after {
    content: '→';
}

.article-nav-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #013B2F;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-nav-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

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

.article-nav-tag {
    font-size: 0.68rem;
    padding: 0.2rem 0.55rem;
    background: #F3F4F6;
    color: #6B7280;
    border-radius: 100px;
}

/* ─── Related Articles ─── */
.article-related {
    margin-top: 2.5rem;
}

.article-related-title {
    font-size: 1.1rem;
    font-weight: 800;
    color: #013B2F;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.article-related-title i {
    color: #00C897;
}

.article-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.article-related-card {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 1.25rem;
    border: 1.5px solid #F3F4F6;
    border-radius: 1.25rem;
    text-decoration: none;
    color: inherit;
    background: #fff;
    transition: border-color 0.2s, background 0.2s, transform 0.15s;
}

.article-related-card:hover {
    border-color: #00C897;
    background: #F0FDFB;
    transform: translateY(-2px);
}

.article-related-card-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: #013B2F;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-related-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-top: auto;
}

.article-related-card-tag {
    font-size: 0.65rem;
    padding: 0.15rem 0.5rem;
    background: #F3F4F6;
    color: #6B7280;
    border-radius: 100px;
}

/* ─── Float Widget ─── */
.float-widget {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 320px;
    background: linear-gradient(135deg, #013B2F, #01573f);
    color: #fff;
    border-radius: 1.5rem;
    padding: 1.5rem;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
    z-index: 500;
    transform: translateY(140%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.35s ease;
    pointer-events: none;
}

.float-widget.visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.float-widget-close {
    position: absolute;
    top: 0.75rem;
    right: 0.875rem;
    width: 1.75rem;
    height: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.18);
    border: none;
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.95);
    cursor: pointer;
    font-size: 0.95rem;
    line-height: 1;
    transition: background 0.2s, color 0.2s;
}

.float-widget-close:hover {
    background: rgba(255, 255, 255, 0.28);
    color: #fff;
}

.float-widget-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #00C897;
    margin-bottom: 0.5rem;
}

.float-widget h4 {
    font-size: 1rem;
    font-weight: 800;
    color: #fff;
    margin: 0 0 0.5rem;
    line-height: 1.3;
    padding-right: 1.5rem;
}

.float-widget p {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.72);
    margin: 0 0 1.1rem;
    line-height: 1.6;
}

.float-widget-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    background: #00C897;
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 0.7rem 1rem;
    border-radius: 100px;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.15s;
}

.float-widget-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
    .article-page-wrap {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        display: none;
    }

    .article-title {
        font-size: 1.65rem;
    }
}

@media (max-width: 768px) {
    .article-page-wrap {
        padding: 0 1rem 3rem;
        margin-top: 1rem;
    }

    .article-title {
        font-size: 1.45rem;
    }

    .product-recommend {
        padding: 1.75rem 1.25rem;
    }

    .product-recommend h3 {
        font-size: 1.25rem;
    }

    .article-nav-prev-next {
        grid-template-columns: 1fr;
    }

    .article-related-grid {
        grid-template-columns: 1fr 1fr;
    }

    .float-widget {
        width: calc(100% - 2rem);
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        border-radius: 1.25rem;
    }
}

@media (max-width: 480px) {
    .article-related-grid {
        grid-template-columns: 1fr;
    }

    .article-body h2 {
        font-size: 1.25rem;
    }

    .article-body h3 {
        font-size: 1.05rem;
    }
}