/* ==========================================================================
   Blog list
   ========================================================================== */

.blog-hero {
    position: relative;
    padding: 168px 0 72px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(circle at 80% 10%, rgba(133, 199, 232, 0.1), transparent 34%),
        #000;
}

.blog-hero h1 {
    margin: 16px 0 16px;
    font-family: var(--font-display);
    font-size: clamp(52px, 7vw, 92px);
    font-weight: 700;
    line-height: 0.95;
}

.blog-hero p {
    max-width: 620px;
    color: var(--text-secondary);
    font-size: clamp(17px, 1.5vw, 20px);
}

.blog-container {
    width: min(100% - 48px, var(--container));
    margin-inline: auto;
    padding: 64px 0 96px;
}

.blog-featured {
    margin-bottom: 40px;
}

a.blog-featured-card,
a.blog-card {
    color: inherit;
    text-decoration: none;
}

.blog-featured-card {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--canvas-soft);
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.blog-featured-card:hover {
    border-color: var(--line-strong);
    transform: translateY(-2px);
}

.blog-featured-image {
    min-height: 360px;
    overflow: hidden;
}

.blog-featured-image img,
.blog-featured-image .blog-card-placeholder {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-featured-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
}

.blog-featured-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    color: var(--accent-cosmic);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.blog-featured-label::before {
    content: '';
    width: 18px;
    height: 1px;
    background: currentColor;
}

.blog-featured-title {
    margin-bottom: 16px;
    font-family: var(--font-display);
    font-size: clamp(30px, 3.2vw, 44px);
    font-weight: 700;
    line-height: 1.02;
}

.blog-featured-excerpt {
    color: var(--text-secondary);
    font-size: 15px;
}

.blog-featured-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 24px;
    color: var(--text-muted);
    font-size: 12px;
}

.blog-featured-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    margin-left: auto;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    color: var(--text-primary);
}

.blog-featured-card:hover .blog-featured-arrow {
    border-color: var(--accent-cosmic);
    color: var(--accent-cosmic);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.blog-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--canvas-soft);
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.blog-card:hover {
    border-color: var(--line-strong);
    transform: translateY(-2px);
}

.blog-card-image-wrapper {
    overflow: hidden;
    background: #0a0a0a;
}

.blog-card-image,
.blog-card-placeholder {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.blog-card-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0b1b27, #1B3C53);
}

.blog-card-image.is-archive {
    filter: saturate(0.7) brightness(0.78);
}

.blog-card-placeholder::after {
    content: '◐';
    color: var(--text-muted);
    font-size: 28px;
}

.blog-card-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 20px;
}

.blog-card-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}

.blog-category,
.blog-archive {
    display: inline-flex;
    align-items: center;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    line-height: 1.4;
    text-transform: uppercase;
}

.blog-category {
    color: var(--accent-cosmic);
    background: rgba(133, 199, 232, 0.1);
}

.blog-archive {
    color: var(--text-muted);
    background: rgba(210, 193, 182, 0.08);
}

.blog-card-date {
    color: var(--text-muted);
    font-size: 11px;
}

.blog-card-title {
    margin: 8px 0 10px;
    font-size: 19px;
    font-weight: 600;
    line-height: 1.35;
}

.blog-card-excerpt {
    flex: 1;
    color: var(--text-secondary);
    font-size: 13px;
}

.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
}

.blog-card-link::after {
    content: '→';
    color: var(--accent-cosmic);
    transition: transform 0.2s ease;
}

.blog-card:hover .blog-card-link::after {
    transform: translateX(3px);
}

.blog-empty {
    padding: 64px 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    text-align: center;
}

.blog-empty-icon {
    margin-bottom: 12px;
    font-size: 32px;
    opacity: 0.6;
}

.blog-empty h3 {
    margin-bottom: 6px;
    font-size: 18px;
}

.blog-empty p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ==========================================================================
   Blog detail
   ========================================================================== */

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1100;
    width: 0;
    height: 2px;
    background: var(--accent-cosmic);
}

.blog-detail-hero {
    padding: 150px 0 56px;
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(circle at 78% 12%, rgba(133, 199, 232, 0.1), transparent 34%),
        #000;
}

.blog-detail-container {
    width: min(100% - 48px, 860px);
    margin-inline: auto;
}

.blog-detail-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 32px;
    color: var(--text-secondary);
    font-size: 13px;
    text-decoration: none;
}

.blog-detail-back::before {
    content: '←';
    color: var(--accent-cosmic);
}

.blog-detail-back:hover {
    color: var(--text-primary);
}

.blog-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    margin-bottom: 16px;
    color: var(--text-muted);
    font-size: 12px;
}

.blog-detail-author::before {
    content: '·';
    margin-right: 10px;
}

.title-break {
    display: none;
}

.blog-detail-title {
    margin-bottom: 20px;
    font-family: var(--font-display);
    font-size: clamp(38px, 5vw, 68px);
    font-weight: 700;
    line-height: 0.98;
}

.blog-detail-excerpt {
    max-width: 760px;
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.7;
}

.blog-detail-featured-image {
    width: min(100% - 48px, 1040px);
    margin: 40px auto 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
}

/* 封面统一为 1600×900，按 16:9 完整显示。 */
.blog-detail-featured-image img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.blog-detail-content {
    padding: 56px 0 24px;
}

.blog-detail-content > * + * {
    margin-top: 18px;
}

.blog-detail-content p,
.blog-detail-content li {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.blog-detail-content h2 {
    margin-top: 42px;
    font-family: var(--font-display);
    font-size: clamp(28px, 3vw, 38px);
    font-weight: 700;
    line-height: 1.05;
}

.blog-detail-content h3 {
    margin-top: 28px;
    font-size: 19px;
    font-weight: 600;
}

.blog-detail-content ul,
.blog-detail-content ol {
    padding-left: 22px;
}

.blog-detail-content li + li {
    margin-top: 6px;
}

.blog-detail-content a {
    color: var(--accent-cosmic);
    text-underline-offset: 3px;
}

.blog-detail-content blockquote {
    margin: 28px 0;
    padding: 20px 24px;
    border-left: 2px solid var(--accent-cosmic);
    background: rgba(27, 60, 83, 0.24);
    color: var(--text-primary);
    font-size: 17px;
}

.blog-detail-content img {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
}

.blog-detail-content .blog-figure {
    margin: 32px 0;
}

.blog-detail-content .blog-figure figcaption {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 12px;
}

.blog-detail-content .blog-callout {
    margin: 32px 0;
    padding: 24px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(27, 60, 83, 0.42), rgba(0, 0, 0, 0.12));
}

.blog-detail-content .blog-callout h3 {
    margin-top: 0;
}

.blog-detail-share {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.blog-detail-share h4 {
    margin-bottom: 14px;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.blog-share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.blog-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 0 14px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.blog-share-btn:hover {
    border-color: var(--accent-cosmic);
    color: var(--accent-cosmic);
}

.blog-related {
    padding: 64px 0 96px;
    border-top: 1px solid var(--line);
}

.blog-related h3 {
    margin-bottom: 24px;
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
}

.blog-related-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.blog-related-card {
    display: grid;
    grid-template-columns: 140px 1fr;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--canvas-soft);
    text-decoration: none;
    transition: border-color 0.2s ease;
}

.blog-related-card:hover {
    border-color: var(--line-strong);
}

.blog-related-image {
    min-height: 110px;
    overflow: hidden;
}

.blog-related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-related-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 16px;
}

.blog-related-title {
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
}

.blog-related-date {
    color: var(--text-muted);
    font-size: 11px;
}

.blog-not-found {
    padding: 80px 0 120px;
    text-align: center;
}

.blog-not-found-icon {
    margin-bottom: 16px;
    font-size: 42px;
    opacity: 0.6;
}

.blog-not-found h2 {
    margin-bottom: 8px;
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
}

.blog-not-found p {
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .blog-featured-card {
        grid-template-columns: 1fr;
    }

    .blog-featured-image {
        min-height: 260px;
    }

    .blog-featured-content {
        padding: 28px;
    }

    .blog-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 640px) {
    .title-break {
        display: block;
    }

    .blog-detail-title {
        font-size: clamp(30px, 8vw, 40px);
    }

    .blog-hero {
        padding: 128px 0 56px;
    }

    .blog-container,
    .blog-detail-container {
        width: min(100% - 32px, var(--container));
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-featured-content {
        padding: 22px;
    }

    .blog-featured-title {
        font-size: 28px;
    }

    .blog-detail-hero {
        padding: 120px 0 40px;
    }

    .blog-detail-featured-image {
        width: min(100% - 32px, var(--container));
    }

    .blog-detail-content {
        padding-top: 40px;
    }

    .blog-related-card {
        grid-template-columns: 104px 1fr;
    }

    .blog-related-card .blog-related-image {
        min-height: 90px;
    }
}