/* ===== Blog Hero ===== */
.blog-hero {
    padding: 120px 0 56px;
    background: radial-gradient(circle at top right, #fdf4ff 0%, var(--bg-body) 55%),
                radial-gradient(circle at bottom left, var(--primary-light) 0%, transparent 50%);
    position: relative;
    overflow: hidden;
}
.blog-hero::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 280px; height: 280px;
    background: #a855f7;
    opacity: 0.06;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(249,115,22,0.08) 0%, transparent 70%);
}
.blog-hero__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    position: relative;
    z-index: 2;
}
.blog-hero__text .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 16px;
}
.blog-hero__text .breadcrumb a { color: var(--primary-color); }
.blog-hero__text .breadcrumb i { font-size: 10px; }
.blog-hero__text h1 { font-size: 40px; letter-spacing: -1px; margin-bottom: 12px; line-height: 1.2; }
.blog-hero__text p  { font-size: 15px; color: var(--text-gray); max-width: 540px; line-height: 1.7; }
.blog-hero__count {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 36px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}
.blog-hero__count-num   { font-size: 40px; font-weight: 800; color: var(--primary-color); line-height: 1; }
.blog-hero__count-label { font-size: 13px; color: var(--text-gray); margin-top: 6px; }

/* ===== Filter Bar ===== */
.blog-filter {
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-white);
    position: sticky;
    top: 70px;
    z-index: 100;
}
.blog-filter__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-top: 14px;
    padding-bottom: 14px;
}
.blog-filter__inner::-webkit-scrollbar { display: none; }
.blog-filter__btn {
    white-space: nowrap;
    padding: 7px 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-gray);
    background: var(--bg-gray);
    border: 1px solid transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}
.blog-filter__btn:hover { color: var(--text-dark); background: var(--bg-white); border-color: var(--border-color); }
.blog-filter__btn.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    font-weight: 600;
}

/* ===== Main Content ===== */
.blog-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}
.blog-count {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 24px;
}
.blog-count strong { color: var(--text-dark); }

/* ===== Grid ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ===== Card ===== */
.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
.blog-card:hover { border-color: var(--primary-color); box-shadow: var(--shadow-md); transform: translateY(-3px); }

.blog-card__cover {
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg-gray);
}
.blog-card__cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.blog-card:hover .blog-card__cover img { transform: scale(1.04); }

.blog-card__cover-placeholder {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    font-size: 48px;
    color: rgba(0,0,0,0.12);
}
/* placeholder colors per category */
.blog-card__cat--tutorial ~ * .blog-card__cover-placeholder,
a.blog-card:has(.blog-card__cat--tutorial) .blog-card__cover-placeholder {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: #3b82f6;
}

.blog-card__body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.blog-card__meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.blog-card__date { font-size: 12px; color: var(--text-gray); }

/* Category badges */
.blog-card__cat {
    font-size: 11px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 4px;
}
.blog-card__cat--tutorial { background: #eff6ff; color: #2563eb; }
.blog-card__cat--advanced  { background: #fdf4ff; color: #9333ea; }
.blog-card__cat--explain   { background: #f0fdf4; color: #16a34a; }
.blog-card__cat--review    { background: #fffbeb; color: #d97706; }
.blog-card__cat--news      { background: #fff1f2; color: #e11d48; }

.blog-card__title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-card__excerpt {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-card__foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}
.blog-card__tags { display: flex; gap: 6px; flex-wrap: wrap; }
.blog-card__tag {
    font-size: 11px;
    color: var(--text-gray);
    background: var(--bg-gray);
    padding: 2px 8px;
    border-radius: 4px;
}
.blog-card__read { font-size: 12px; color: var(--text-gray); white-space: nowrap; flex-shrink: 0; }
.blog-card__read i { margin-right: 3px; }

/* ===== Empty State ===== */
.blog-empty {
    grid-column: 1/-1;
    text-align: center;
    padding: 80px 0;
    color: var(--text-gray);
    font-size: 15px;
}
.blog-empty i { font-size: 48px; display: block; margin-bottom: 16px; color: var(--border-color); }

/* 文章页隐藏导航栏语言切换 */
.is-article .navbar .lang-switch { visibility: hidden; }

/* ===== Article Page ===== */
.article-layout {
    max-width: 800px;
    margin: 100px auto 80px;
    padding: 0 24px;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.article-breadcrumb a { color: var(--primary-color); }
.article-breadcrumb i { font-size: 10px; }
.article-cats { margin-bottom: 14px; }

.article-title {
    font-size: 34px;
    line-height: 1.35;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.article-info {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-gray);
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 36px;
}
.article-info i { margin-right: 5px; }

/* Article Body */
.article-body h2 {
    font-size: 22px;
    margin: 36px 0 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-dark);
}
.article-body h3 {
    font-size: 17px;
    margin: 24px 0 10px;
    color: var(--text-dark);
}
.article-body p {
    font-size: 15px;
    line-height: 1.85;
    color: var(--text-body);
    margin-bottom: 16px;
}
.article-body ul,
.article-body ol {
    padding-left: 24px;
    margin-bottom: 16px;
}
.article-body li {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
    margin-bottom: 6px;
}
.article-body a { color: var(--primary-color); font-weight: 500; }
.article-body code {
    font-family: monospace;
    font-size: 13px;
    background: var(--bg-gray);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--text-dark);
}
.article-body pre {
    background: #0f1117;
    border-radius: 10px;
    padding: 18px 20px;
    margin-bottom: 18px;
    overflow-x: auto;
}
.article-body pre code {
    background: none;
    color: #e2e8f0;
    font-size: 13px;
    padding: 0;
    line-height: 1.7;
}
.article-body blockquote {
    border-left: 4px solid var(--primary-color);
    background: var(--primary-light);
    padding: 14px 18px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.7;
}

/* Tip boxes */
.article-tip {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.75;
    margin-bottom: 16px;
}
.article-tip i { flex-shrink: 0; margin-top: 2px; font-size: 15px; }
.article-tip--info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }
.article-tip--info i { color: #3b82f6; }
.article-tip--warn { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.article-tip--warn i { color: #d97706; }

/* Download CTA card */
.article-dl-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 28px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    margin: 48px 0 32px;
    color: #fff;
}
.article-dl-card__icon {
    font-size: 36px;
    flex-shrink: 0;
    opacity: 0.9;
}
.article-dl-card h3 { font-size: 18px; margin-bottom: 8px; color: #fff; }
.article-dl-card p  { font-size: 14px; opacity: 0.88; line-height: 1.6; margin-bottom: 18px; }
.article-dl-card__btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition);
}
.btn--primary {
    background: #fff;
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.btn--primary:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(0,0,0,0.2); }
.btn--outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.6);
}
.btn--outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }

/* Back button */
.article-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    margin-top: 8px;
}

/* Floating download widget */
.dl-float {
    position: fixed;
    bottom: 32px; right: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--text-dark);
    color: #fff;
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(0,0,0,0.25);
    z-index: 200;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.35s, transform 0.35s;
    pointer-events: none;
}
.dl-float--visible { opacity: 1; transform: none; pointer-events: auto; }
.dl-float__close {
    position: absolute;
    top: -8px; right: -8px;
    width: 22px; height: 22px;
    background: #64748b;
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 11px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}
.dl-float__icon { font-size: 22px; color: var(--primary-color); flex-shrink: 0; }
.dl-float__text strong { display: block; font-size: 14px; }
.dl-float__text span   { font-size: 12px; opacity: 0.65; }
.dl-float__btn {
    margin-left: 4px;
    padding: 8px 16px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    /* Hero */
    .blog-hero { padding: 84px 0 36px; }
    .blog-hero__inner { flex-direction: column; align-items: flex-start; gap: 24px; }
    .blog-hero__text h1 { font-size: 28px; }
    .blog-hero__text p { font-size: 14px; }
    .blog-hero__count { flex-direction: row; gap: 16px; padding: 16px 20px; }
    .blog-hero__count-num { font-size: 28px; }

    /* Filter bar */
    .blog-filter { top: 72px; }
    .blog-filter__inner { padding: 10px 16px; gap: 6px; }
    .blog-filter__btn { padding: 6px 14px; font-size: 13px; }

    /* Grid */
    .blog-main { padding: 24px 16px 60px; }
    .blog-grid { gap: 16px; }

    /* Article page */
    .article-layout { margin-top: 80px; padding: 0 16px; }
    .article-title { font-size: 26px; }
    .article-body h2 { font-size: 19px; }
    .article-body h3 { font-size: 16px; }
    .article-body code { word-break: break-all; }
    .article-body pre { overflow-x: auto; }
    .article-tip { font-size: 13px; padding: 12px 14px; }

    /* Article download card */
    .article-dl-card { flex-direction: column; gap: 16px; padding: 20px; }
    .article-dl-card__icon { display: none; }
    .article-dl-card .btn { width: 100%; text-align: center; justify-content: center; }

    /* Back button */
    .article-back-btn { margin: 24px 0 40px; }

    /* Float download — mobile bottom bar (two-row layout) */
    .dl-float {
        left: 12px; right: 12px; bottom: 16px;
        width: auto;
        padding: 10px 14px;
        border-radius: 12px;
        gap: 8px;
        flex-wrap: wrap;
        align-items: center;
    }
    .dl-float__text { flex: 1; min-width: 0; }
    .dl-float__text span { display: none; }
    .dl-float__text strong { font-size: 13px; display: block; }
    .dl-float__icon { font-size: 18px; flex-shrink: 0; }
    .dl-float__btn {
        width: 100%;
        margin-left: 0;
        padding: 8px 0;
        font-size: 13px;
        text-align: center;
        justify-content: center;
        display: block;
    }
}

@media (max-width: 640px) {
    .blog-grid { grid-template-columns: 1fr; }
    .blog-hero__text h1 { font-size: 24px; }
    .blog-hero__count { flex-direction: column; align-items: flex-start; gap: 8px; }
    .article-title { font-size: 22px; }
    .article-info { gap: 12px; }
}

@media (max-width: 480px) {
    .blog-filter__btn { padding: 5px 12px; font-size: 12px; }
    .blog-hero__count-num { font-size: 24px; }
    .article-body p { font-size: 14px; }
    .article-body li { font-size: 14px; }
}