/* ================= Article Page Layout ================= */
.article-page-wrap {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 48px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 108px 5vw 80px;
    align-items: start;
}

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

/* ================= Breadcrumb ================= */
.breadcrumb {
    margin-bottom: 32px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.88rem;
    color: var(--text-gray);
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
}

.breadcrumb-list li a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb-list li a:hover {
    color: var(--dark-bg);
}

.breadcrumb-list li:last-child span {
    color: var(--text-dark);
    font-weight: 500;
}

.breadcrumb-sep {
    color: rgba(0, 0, 0, 0.25);
    font-size: 0.8rem;
    user-select: none;
}

/* ================= Article Header ================= */
.article-header {
    margin-bottom: 40px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.article-meta-top {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.article-category {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: var(--dark-bg);
    color: var(--accent-green);
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.article-badge-new {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.article-tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    background: var(--accent-green-light);
    color: var(--dark-bg);
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
}

.article-title {
    font-size: clamp(1.75rem, 3vw, 2.6rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
    color: var(--dark-bg);
    margin-bottom: 20px;
}

.article-meta-bottom {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 0.9rem;
    color: var(--text-gray);
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.article-date,
.article-reading {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.article-summary {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    padding: 20px 24px;
    background: var(--bg-base);
    border-left: 3px solid var(--accent-green);
    border-radius: 0 12px 12px 0;
}

/* ================= Article Body ================= */
.article-body {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-dark);
    overflow-wrap: break-word;
}

.article-body h2 {
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--dark-bg);
    margin: 52px 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--accent-green-light);
}

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

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin: 36px 0 14px;
}

.article-body h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin: 24px 0 10px;
}

.article-body p {
    margin-bottom: 20px;
}

.article-body ul,
.article-body ol {
    padding-left: 1.5em;
    margin-bottom: 20px;
}

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

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

/* Stronger than .article-body ol — hide native markers; steps use .step-list li::before */
.article-body ol.step-list {
    list-style: none;
    padding-left: 0;
}

.article-body li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.article-body strong {
    font-weight: 700;
    color: var(--dark-bg);
}

.article-body a {
    color: #2d7d3a;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s;
    overflow-wrap: break-word;
}

.article-body a:hover {
    color: var(--accent-hover);
}

/* ================= Code Blocks ================= */
.article-body code {
    background: rgba(11, 28, 19, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 5px;
    padding: 2px 7px;
    font-size: 0.88em;
    font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
    color: #1a4731;
}

.article-body pre {
    background: var(--dark-bg);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    overflow-x: auto;
    margin: 28px 0;
    position: relative;
}

.article-body pre code {
    background: none;
    border: none;
    padding: 0;
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ================= Callout / Alert Boxes ================= */
.callout {
    border-radius: var(--radius-md);
    padding: 18px 22px;
    margin: 28px 0;
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.callout-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.callout-body {
    flex: 1;
    min-width: 0;
    font-size: 0.97rem;
    line-height: 1.75;
}

.callout-body strong {
    display: block;
    margin-bottom: 4px;
}

.callout-tip {
    background: rgba(167, 196, 160, 0.15);
    border: 1px solid rgba(167, 196, 160, 0.4);
}

.callout-tip .callout-icon {
    color: #2d7d3a;
}

.callout-warning {
    background: rgba(245, 200, 60, 0.12);
    border: 1px solid rgba(245, 200, 60, 0.35);
}

.callout-warning .callout-icon {
    color: #b45309;
}

.callout-info {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.25);
}

.callout-info .callout-icon {
    color: #1d4ed8;
}

/* ================= Step List ================= */
.step-list {
    list-style: none;
    padding: 0;
    counter-reset: step-counter;
    margin: 24px 0;
}

.step-list li {
    counter-increment: step-counter;
    position: relative;
    padding: 16px 20px 16px 60px;
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.step-list li::before {
    content: counter(step-counter);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--dark-bg);
    color: var(--accent-green);
    font-size: 0.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    left: 16px;
    top: 16px;
}

/* ================= Article TOC Sidebar ================= */
.article-sidebar {
    position: sticky;
    top: 104px;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
}

.toc-card {
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-md);
    padding: 24px 20px;
}

.toc-title {
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-gray);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list li {
    margin-bottom: 2px;
}

.toc-list li a {
    display: block;
    padding: 7px 10px;
    border-radius: 8px;
    font-size: 0.88rem;
    color: var(--text-gray);
    text-decoration: none;
    transition: all 0.2s;
    line-height: 1.45;
}

.toc-list li a:hover {
    background: var(--accent-green-light);
    color: var(--dark-bg);
}

.toc-list li a.toc-active {
    background: var(--accent-green-light);
    color: var(--dark-bg);
    font-weight: 600;
}

.toc-list li.toc-h3 a {
    padding-left: 22px;
    font-size: 0.83rem;
}

/* ================= Product Recommend Section ================= */
.product-recommend {
    margin-top: 56px;
    padding: 44px 48px;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #153322 100%);
    border-radius: var(--radius-lg);
    color: white;
    position: relative;
    overflow: hidden;
}

.product-recommend::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(167, 196, 160, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.recommend-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(167, 196, 160, 0.2);
    color: var(--accent-green);
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.recommend-title {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: white;
    margin-bottom: 12px;
}

.recommend-desc {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.75;
    margin-bottom: 24px;
    max-width: 560px;
}

.recommend-features {
    list-style: none;
    padding: 0;
    margin: 0 0 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.recommend-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.8);
}

.recommend-features li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: 700;
    flex-shrink: 0;
}

.recommend-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--accent-green);
    color: var(--dark-bg);
    border-radius: 10px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.recommend-btn:hover {
    background: #b8d4b0;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
    color: var(--dark-bg);
    text-decoration: none;
}

/* ================= Float Download Widget ================= */
.float-widget {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 300px;
    background: white;
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(11, 28, 19, 0.16), 0 4px 16px rgba(0, 0, 0, 0.08);
    padding: 22px 22px 18px;
    z-index: 800;
    transform: translateY(120px);
    opacity: 0;
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.45s ease;
    pointer-events: none;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

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

.float-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    transition: background 0.2s;
    line-height: 1;
}

.float-close:hover {
    background: rgba(0, 0, 0, 0.12);
}

.float-content {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
}

.float-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.float-icon img {
    width: 44px;
    height: 44px;
    display: block;
    border-radius: 12px;
}

.float-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 3px;
}

.float-desc {
    font-size: 0.8rem;
    color: var(--text-gray);
    line-height: 1.45;
}

.float-btn {
    display: block;
    text-align: center;
    padding: 11px 0;
    background: var(--dark-bg);
    color: white;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s;
}

.float-btn:hover {
    background: #153322;
    transform: translateY(-1px);
    color: white;
    text-decoration: none;
}

/* ================= Responsive ================= */
@media (max-width: 1100px) {
    .article-page-wrap {
        grid-template-columns: 1fr;
        padding: 100px 5vw 60px;
    }

    .article-sidebar {
        display: none;
    }

    .recommend-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .article-page-wrap {
        padding: 90px 5vw 48px;
        gap: 0;
    }

    .article-title {
        font-size: 1.65rem;
        letter-spacing: -0.5px;
    }

    .product-recommend {
        padding: 28px 24px;
    }

    .recommend-title {
        font-size: 1.5rem;
    }

    .float-widget {
        bottom: 0;
        right: 0;
        left: 0;
        width: 100%;
        border-radius: 18px 18px 0 0;
        padding: 18px 20px 24px;
    }

    .article-body h2 {
        font-size: 1.4rem;
    }

    .article-body pre {
        padding: 18px 16px;
    }

    /* Prevent inline code from overflowing step-list flex items */
    .step-list li {
        overflow-wrap: break-word;
        display: block;
        padding: 16px 20px 16px 52px;
        position: relative;
    }

    .step-list li::before {
        position: absolute;
        left: 12px;
        top: 18px;
        margin-top: 0;
        flex-shrink: unset;
    }

    .article-body code {
        word-break: break-all;
        overflow-wrap: anywhere;
        white-space: pre-wrap;
    }
}

@media (max-width: 480px) {
    .article-meta-bottom {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
}