/* 專欄詳情頁 */

/* ── 麵包屑 ── */
.bd-breadcrumb-section {
    padding: 24px 0 0;
    background: #fff;
}

.bd-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: rgba(44, 36, 22, 0.45);
    letter-spacing: 0.04em;
}

.bd-breadcrumb a {
    color: rgba(44, 36, 22, 0.55);
    transition: var(--transition);
}

.bd-breadcrumb a:hover {
    color: var(--primary-color);
}

.bd-breadcrumb-sep {
    color: rgba(44, 36, 22, 0.25);
}

.bd-breadcrumb .is-current {
    color: var(--primary-color);
    font-weight: 500;
}

/* ── 文章主體 ── */
.bd-article-section {
    padding: 32px 0 64px;
    background: #fff;
}

.bd-article-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 48px;
    align-items: start;
}

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

/* 文章頭部 */
.bd-article-header {
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--tcm-border);
}

.bd-article-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--primary-color);
    background: var(--tcm-red-light);
    padding: 4px 12px;
    margin-bottom: 16px;
}

.bd-article-title {
    font-family: var(--family-font);
    font-size: clamp(28px, 3.2vw, 38px);
    font-weight: 500;
    color: var(--tcm-ink);
    line-height: 1.35;
    margin: 0 0 16px;
    letter-spacing: 0.04em;
}

.bd-article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: rgba(44, 36, 22, 0.5);
}

.bd-article-meta time {
    display: flex;
    align-items: center;
    gap: 6px;
}

.bd-article-author {
    padding-left: 20px;
    border-left: 1px solid var(--tcm-border);
}

.article-icon {
    display: flex;
    align-items: center;
    gap: 5px;
}

.article-icon svg {
    width: 18px;
    height: 18px;
    padding-bottom: 1px;
}

.article-icon svg path {
    fill: rgba(44, 36, 22, 0.5);
}

/* 封面圖 */
.bd-article-cover {
    position: relative;
    margin-bottom: 30px;
    overflow: hidden;
    /* background: var(--tcm-paper); */
}

.bd-article-cover::after {
    content: '專欄';
    position: absolute;
    top: 16px;
    left: 0;
    background: var(--primary-color);
    color: #fff;
    font-size: 12px;
    letter-spacing: 0.15em;
    padding: 6px 14px 6px 12px;
    clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 50%, 100% 100%, 0 100%);
}

.bd-article-cover img {
    width: 50%;
    height: auto;
    object-fit: cover;
    display: block;
}

/* 正文 */
.bd-article-body {
    font-size: 16px;
    line-height: 1.85;
    color: rgba(44, 36, 22, 0.78);
}

.bd-article-body .bd-lead {
    font-size: 17px;
    line-height: 1.9;
    color: rgba(44, 36, 22, 0.85);
    margin-bottom: 32px;
    padding-left: 16px;
}

.article-sec-title h2 {
    font-family: var(--family-font);
    font-size: 30px;
    font-weight: 500;
    color: var(--primary-color);
    letter-spacing: 0.04em;
    position: relative;
}

.article-sec-title {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 16px;
}

.article-sec-title span {
    font-size: 18px;
    font-weight: 500;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: #fff;
    font-family: var(--family-font);
}

.sec-box {
    /* padding: 20px 20px; */
    /* background: var(--tcm-cream); */
    /* border: 1px solid var(--tcm-border); */
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sec-box p {
    font-size: 16px;
}

.bd-article-body p {
    /* margin: 0 0 16px; */
}

.bd-article-body ul,
.bd-article-body ol {
    /* margin: 0 0 20px; */
    padding-left: 0px;
}

.bd-article-body li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
    font-size: 15px;
}

.bd-article-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 48%;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    transform: rotate(45deg) translateY(-50%);
}

.bd-article-body li strong {
    color: var(--tcm-ink);
    font-weight: 500;
}

.bd-article-body blockquote {
    /* margin: 28px 0; */
    /* padding: 20px 24px; */
    /* background: var(--tcm-gold-light); */
    font-family: var(--family-font);
    font-size: 16px;
    font-weight: 500;
    color: var(--primary-color);
    letter-spacing: 0.04em;
    line-height: 1.7;
}

.bd-figure {
    margin: 30px 0;
    padding: 0;
}

.bd-figure img {
    width: 100%;
    height: auto;
    display: block;
}

.bd-tip-box {
    margin: 30px 0;
    padding: 20px 20px;
    background: var(--tcm-cream);
    border: 1px solid var(--tcm-border);
}

.bd-tip-box strong {
    display: block;
    font-family: var(--family-font);
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 8px;
    letter-spacing: 0.06em;
}

.bd-tip-box p {
    margin: 0;
    font-size: 16px;
}

/* 文章底部 */
.bd-article-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px dashed var(--tcm-border);
}

.bd-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: rgba(44, 36, 22, 0.65);
    transition: var(--transition);
}

.bd-back-link:hover {
    color: var(--primary-color);
}

.bd-share {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: rgba(44, 36, 22, 0.5);
}

.bd-share a {
    color: rgba(44, 36, 22, 0.55);
    transition: var(--transition);
}

.bd-share a:hover {
    color: var(--primary-color);
}

/* ── 側邊欄 ── */
.bd-sidebar {
    position: sticky;
    top: 110px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.bd-sidebar-box {
    padding: 24px;
    background: #fff;
    border: 1px solid var(--tcm-border);
}

.bd-sidebar-box h3 {
    font-family: var(--family-font);
    font-size: 20px;
    font-weight: 500;
    color: var(--tcm-ink);
    margin: 0 0 16px;
    letter-spacing: 0.06em;
}

.bd-sidebar-cta {
    background: linear-gradient(180deg, var(--tcm-cream) 0%, #fff 100%);
    border-color: rgba(179, 32, 44, 0.12);
}

.bd-sidebar-cta p {
    font-size: 14px;
    line-height: 1.75;
    color: rgba(44, 36, 22, 0.65);
    margin: 0 0 20px;
}

.bd-sidebar-cta .primary-btn {
    width: 100%;
    text-align: center;
}

.bd-sidebar-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.bd-sidebar-list li {
    border-bottom: 1px dashed var(--tcm-border);
}

.bd-sidebar-list li:last-child {
    border-bottom: none;
}

.bd-sidebar-list a {
    padding: 10px 0;
    transition: var(--transition);
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: space-between;

}

.bd-sidebar-list a .content-box {
    padding: 0;
}

.bd-sidebar-list a .img-box {
    width: 70px;
    height: 60px;
    overflow: hidden;
    position: relative;
}

.bd-sidebar-list a .img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.bd-sidebar-list a:hover .bd-sidebar-title {
    color: var(--primary-color);
}

.bd-sidebar-date {
    display: block;
    font-size: 12px;
    color: rgba(44, 36, 22, 0.4);
    margin-top: 4px;
}

.bd-sidebar-title {
    display: block;
    font-size: 14px;
    line-height: 1.5;
    color: var(--tcm-ink);
    transition: color 0.3s ease;
}

.bd-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.bd-tag-list a {
    font-size: 12px;
    padding: 5px 14px;
    background: var(--tcm-cream);
    color: rgba(44, 36, 22, 0.65);
    border: 1px solid var(--tcm-border);
    transition: var(--transition);
}

.bd-tag-list a:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

/* ── 相關推薦（blog-item 樣式）── */
.bd-related-section {
    padding: 60px 0 80px;
    background: linear-gradient(180deg, #fff 0%, var(--tcm-cream) 100%);
}

.bd-related-head {
    text-align: center;
    margin-bottom: 40px;
}

.bd-related-head .section-title {
    margin-bottom: 0;
}

.bd-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

/* blog-item 卡片（與首頁 / 列表頁一致） */
.bd-related-grid .blog-item {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--tcm-border);
    transition: var(--transition);
    height: 100%;
    background: #fff;
    overflow: hidden;
}

.bd-related-grid .blog-item .img-box {
    width: 100%;
    height: 300px;
    overflow: hidden;
    position: relative;
}

.bd-related-grid .blog-item .img-box::after {
    content: '專欄';
    position: absolute;
    top: 16px;
    left: 0;
    background: var(--primary-color);
    color: #fff;
    font-size: 12px;
    letter-spacing: 0.15em;
    padding: 6px 14px 6px 12px;
    clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 50%, 100% 100%, 0 100%);
}

.bd-related-grid .blog-item .img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.bd-related-grid .blog-item:hover {
    box-shadow: var(--tcm-shadow);
    border-color: rgba(179, 32, 44, 0.2);
}

.bd-related-grid .blog-item:hover .img-box img {
    transform: scale(1.06);
}

.bd-related-grid .blog-item .content-box {
    padding: 24px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-top: 3px solid var(--tcm-gold-light);
}

.bd-related-grid .blog-item .content-box h3 {
    font-size: 18px;
    font-family: var(--family-font);
    font-weight: 500;
    color: var(--tcm-ink);
    margin-bottom: 10px;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.bd-related-grid .blog-item:hover h3 {
    color: var(--primary-color);
}

.bd-related-grid .blog-item .content-box p {
    font-size: 14px;
    color: rgba(44, 36, 22, 0.72);
    line-height: 1.7;
    margin: 0;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    display: -webkit-box;
}

.bd-related-grid .blog-item .content-box span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px dashed var(--tcm-border);
    color: rgba(44, 36, 22, 0.5);
}

.bd-related-grid .blog-item .content-box span svg {
    width: 13px;
    height: 13px;
}

/* ── 響應式 ── */
@media (max-width: 1024px) {
    .bd-article-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .bd-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .bd-sidebar-cta {
        grid-column: 1 / -1;
    }

    .bd-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .bd-breadcrumb-section {
        padding-top: 16px;
    }

    .bd-article-section {
        padding: 20px 0 30px;
    }

    .bd-article-title {
        font-size: 30px;
    }

    .bd-article-cover img {
        width: 100%;
    }

    .bd-article-author {
        padding-left: 0;
        border-left: none;
        width: 100%;
    }

    .bd-article-body {
        font-size: 15px;
    }

    .bd-article-body h2 {
        font-size: 23px;
    }

    .bd-sidebar {
        grid-template-columns: 1fr;
    }

    .bd-related-section {
        padding: 30px 0 60px;
    }

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

    .bd-article-meta {
        flex-wrap: nowrap;
        gap: 10px;
        justify-content: space-between;
    }

    .article-icon {
        width: 100%;
    }

    .bd-article-header {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }

    .sec-box p {
        font-size: 15px;
    }

    .sec-box {
        gap: 15px;
    }

    .bd-article-body li {
        font-size: 14px;
        padding-left: 15px;
    }

    .bd-article-footer {
        margin-top: 30px;
    }

    .bd-article-layout {
        gap: 30px;
    }

    .bd-sidebar-cta {
        padding: 20px;
    }

    .bd-sidebar-box {
        padding: 20px;
    }

    .bd-sidebar-box h3 {
        margin-bottom: 10px;
    }

    .bd-related-head {
        margin-bottom: 30px;
    }
}

@media screen and (max-width: 768px) {
    .bd-related-section{
        padding: 30px 0 0 0;
    }
}