/**
 * 内页通用：面包屑栏、期卷、栏目详情
 * @author GCG
 */
.ssi-page-content {
    padding-top: 0;
    padding-bottom: 48px;
    background: var(--ssi-background);
}

/* 面包屑：紧贴头部导航下方，无独立背景，跟随页面 */
.ssi-breadcrumb-bar {
    background: transparent;
    border: none;
}

.ssi-breadcrumb-bar .ssi-container {
    padding-top: 24px;
    padding-bottom: 16px;
}

.ssi-breadcrumb-bar .ssi-breadcrumb {
    margin-bottom: 0;
}

.ssi-breadcrumb-bar .ssi-breadcrumb--caps ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
    font-family: var(--ssi-font-label);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    color: var(--ssi-muted-gray);
}

.ssi-breadcrumb-bar .ssi-breadcrumb--caps a {
    color: var(--ssi-muted-gray);
}

.ssi-breadcrumb-bar .ssi-breadcrumb--caps a:hover {
    color: var(--ssi-primary);
}

.ssi-breadcrumb-bar .ssi-breadcrumb--caps .is-active span {
    color: var(--ssi-primary);
    font-weight: 600;
}

.ssi-breadcrumb-bar .ssi-breadcrumb__chevron {
    display: flex;
    align-items: center;
    color: var(--ssi-outline);
}

.ssi-breadcrumb-bar .ssi-breadcrumb__chevron svg {
    width: 16px;
    height: 16px;
}

.ssi-page-content > .ssi-container {
    padding-top: 8px;
}

/* 栏目详情：左导航 + 内容 */
.ssi-column-page-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: start;
}

@media (min-width: 992px) {
    .ssi-column-page-layout.has-nav {
        grid-template-columns: 240px minmax(0, 1fr);
        gap: 48px;
    }
}

.ssi-column-nav {
    position: sticky;
    top: calc(var(--ssi-header-height) + 24px);
}

.ssi-column-nav__label {
    font-family: var(--ssi-font-label);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ssi-muted-gray);
    margin: 0 0 16px;
}

.ssi-column-nav__list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ssi-column-nav__link {
    display: block;
    padding: 10px 0;
    font-family: var(--ssi-font-label);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--ssi-ink-black);
    border-bottom: 1px solid transparent;
    transition: color 0.2s;
}

.ssi-column-nav__link:hover {
    color: var(--ssi-primary);
}

.ssi-column-nav__link.is-active {
    color: var(--ssi-primary);
    font-weight: 700;
}

.ssi-column-page-main {
    min-width: 0;
}

.ssi-content-panel {
    background: #fff;
    border: 1px solid var(--ssi-outline-variant);
    border-radius: var(--ssi-radius);
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

@media (min-width: 768px) {
    .ssi-content-panel {
        padding: 40px 48px;
    }
}

.ssi-content-panel > .ssi-headline-lg:first-child,
.ssi-column-page-main > .ssi-headline-lg:first-child {
    margin-top: 0;
    margin-bottom: 24px;
    color: var(--ssi-primary);
}

.ssi-single-page-body {
    font-family: var(--ssi-font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--ssi-on-background);
}

.ssi-single-page-body h2,
.ssi-single-page-body h3 {
    font-family: var(--ssi-font-display);
    color: var(--ssi-primary);
    margin-top: 32px;
    margin-bottom: 16px;
}

.ssi-single-page-body p {
    margin-bottom: 16px;
}

.ssi-single-page-body ul,
.ssi-single-page-body ol {
    margin-bottom: 16px;
    padding-left: 1.4em;
}

.ssi-single-page-body blockquote {
    margin: 24px 0;
    padding: 20px 24px;
    background: var(--ssi-surface-container-low);
    border-left: 4px solid var(--ssi-primary);
    border-radius: var(--ssi-radius);
    font-style: italic;
    color: var(--ssi-muted-gray);
}

/* 期卷列表 */
.ssi-archives-page__header {
    margin-bottom: 40px;
}

.ssi-archives-page__title {
    margin: 0 0 12px;
    color: var(--ssi-primary);
}

.ssi-archives-page__desc {
    margin: 0;
    font-family: var(--ssi-font-body);
    font-size: 18px;
    line-height: 1.6;
    color: var(--ssi-muted-gray);
    max-width: 640px;
}

.ssi-archives-page__empty {
    color: var(--ssi-muted-gray);
}

.ssi-archives-volume {
    margin-bottom: 48px;
}

.ssi-archives-volume:last-child {
    margin-bottom: 0;
}

.ssi-archives-volume__label {
    font-family: var(--ssi-font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--ssi-primary);
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--ssi-primary);
}

.ssi-archives-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

@media (min-width: 576px) {
    .ssi-archives-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 768px) {
    .ssi-archives-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (min-width: 992px) {
    .ssi-archives-grid {
        grid-template-columns: repeat(5, minmax(0, 1fr));
        gap: 18px;
    }
}

@media (min-width: 1200px) {
    .ssi-archives-grid {
        grid-template-columns: repeat(6, minmax(0, 1fr));
    }
}

.ssi-archives-card {
    background: #fff;
    border: 1px solid #e8eaed;
    border-radius: var(--ssi-radius);
    overflow: hidden;
    transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}

.ssi-archives-card:hover {
    border-color: #d0d4da;
    box-shadow: 0 12px 32px rgba(0, 0, 85, 0.08);
    transform: translateY(-4px);
}

.ssi-archives-card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

.ssi-archives-card__cover-wrap {
    background: var(--ssi-surface-container-low);
}

.ssi-archives-card__cover {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}

.ssi-archives-card__cover--placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: 120px;
    background: linear-gradient(160deg, var(--ssi-primary) 0%, var(--ssi-deep-navy) 100%);
    color: #fff;
    font-family: var(--ssi-font-label);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.ssi-archives-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 12px 14px 14px;
}

.ssi-archives-card__title {
    font-family: var(--ssi-font-display);
    font-size: 14px;
    font-weight: 700;
    color: var(--ssi-primary);
    margin: 0 0 4px;
    line-height: 1.35;
}

.ssi-archives-card__date {
    font-family: var(--ssi-font-label);
    font-size: 12px;
    color: var(--ssi-muted-gray);
    margin: 0 0 auto;
}

.ssi-archives-card__cta {
    display: inline-block;
    margin-top: 10px;
    font-family: var(--ssi-font-label);
    font-size: 12px;
    font-weight: 700;
    color: var(--ssi-action-blue);
}

.ssi-archives-card:hover .ssi-archives-card__cta {
    text-decoration: underline;
}

/* 稿件列表卡片（期卷详情等） */
.ssi-article-list-cards {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ssi-article-list-card {
    background: #fff;
    border: 1px solid #e8eaed;
    border-radius: var(--ssi-radius);
    padding: 24px;
    transition: box-shadow 0.25s ease;
}

.ssi-article-list-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.ssi-article-list-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.ssi-article-list-card__badge {
    display: inline-block;
    padding: 4px 10px;
    background: #28a745;
    border-radius: var(--ssi-radius);
    font-family: var(--ssi-font-label);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #fff;
}

.ssi-article-list-card__actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ssi-article-list-card__icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: var(--ssi-radius);
    background: transparent;
    color: var(--ssi-muted-gray);
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
}

.ssi-article-list-card__icon-btn svg {
    width: 20px;
    height: 20px;
}

.ssi-article-list-card__icon-btn:hover {
    color: var(--ssi-primary);
    background: var(--ssi-surface-container-low);
}

.ssi-article-list-card__title {
    margin: 0 0 12px;
    font-family: var(--ssi-font-display);
    font-size: clamp(20px, 2.5vw, 26px);
    font-weight: 700;
    line-height: 1.3;
}

.ssi-article-list-card__title a {
    color: var(--ssi-primary);
    text-decoration: none;
    transition: color 0.2s;
}

.ssi-article-list-card__title a:hover {
    color: var(--ssi-action-blue);
}

.ssi-article-list-card__authors {
    margin: 0 0 8px;
    font-family: var(--ssi-font-label);
    font-size: 15px;
    font-weight: 700;
    color: var(--ssi-ink-black);
}

.ssi-article-list-card__meta {
    margin: 0 0 16px;
    font-family: var(--ssi-font-label);
    font-size: 14px;
    font-style: italic;
    color: var(--ssi-muted-gray);
}

.ssi-article-list-card__abstract {
    margin: 0 0 20px;
    font-family: var(--ssi-font-body);
    font-size: 16px;
    line-height: 1.65;
    color: var(--ssi-muted-gray);
}

.ssi-article-list-card__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-top: 20px;
    border-top: 1px solid #e8eaed;
}

.ssi-article-list-card__metrics {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
}

.ssi-article-list-card__metric {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--ssi-font-label);
    font-size: 13px;
    color: var(--ssi-muted-gray);
}

.ssi-article-list-card__metric svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.ssi-article-list-card__more {
    font-family: var(--ssi-font-label);
    font-size: 14px;
    font-weight: 700;
    color: var(--ssi-primary);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s;
}

.ssi-article-list-card__more:hover {
    color: var(--ssi-action-blue);
}

/* 期卷详情 */
.ssi-issue-page-header {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    align-items: flex-start;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--ssi-primary);
}

.ssi-issue-page-header__cover {
    width: 140px;
    flex-shrink: 0;
    box-shadow: 4px 4px 12px rgba(0, 0, 0, 0.12);
    border-radius: var(--ssi-radius);
}

.ssi-issue-page-header__title {
    margin: 0 0 8px;
    color: var(--ssi-primary);
    font-size: clamp(24px, 3vw, 32px);
}

.ssi-issue-page-header__meta {
    font-family: var(--ssi-font-label);
    font-size: 14px;
    color: var(--ssi-muted-gray);
    margin: 0;
}