/* ===== 公共样式（前台 + 静态包共用）===== */
:root {
    --primary: #b03030;
    --primary-dark: #8f2626;
    --text: #333;
    --muted: #888;
    --border: #e0e0e0;
    --bg: #fff;
    --sidebar: #f7f7f7;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
}
img { max-width: 100%; height: auto; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); text-decoration: underline; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

/* 头部 */
.site-header { background: var(--primary); color: #fff; }
.header-inner { display: flex; align-items: center; gap: 20px; padding: 12px 16px; flex-wrap: wrap; }
.site-logo { color: #fff; font-size: 22px; font-weight: 700; }
.site-logo:hover { color: #fff; text-decoration: none; }
.logo-img { max-height: 40px; }
.main-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a { color: rgba(255,255,255,.9); padding: 6px 10px; border-radius: 4px; }
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.15); text-decoration: none; }
.main-nav a.active { background: rgba(255,255,255,.25); color: #fff; }
.search-form { margin-left: auto; display: flex; gap: 6px; }
.search-form input[type=search] {
    border: none; border-radius: 4px; padding: 7px 12px; width: 240px; font-size: 14px;
}
.search-form button {
    border: 1px solid #fff; background: transparent; color: #fff;
    border-radius: 4px; padding: 6px 14px; cursor: pointer;
}
.search-form button:hover { background: rgba(255,255,255,.2); }

/* 主体 */
.page-main { min-height: 60vh; padding: 24px 0 40px; }
.breadcrumb { margin: 8px 0 18px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb span { margin: 0 6px; }

.section-header { border-bottom: 2px solid var(--primary); margin-bottom: 12px; padding-bottom: 6px; }
.section-title { font-size: 20px; color: var(--primary); }
.empty { color: var(--muted); padding: 16px 0; }

/* 首页布局 */
.layout-detail { display: grid; grid-template-columns: 1fr 320px; gap: 20px; margin-bottom: 28px; }
.layout-left { min-width: 0; }
.layout-right {}
.hotspot-container { position: relative; display: inline-block; max-width: 100%; background: var(--sidebar); }
.hotspot-container img { display: block; width: 100%; }
.hotspot-area {
    position: absolute; display: block; z-index: 5;
    border: 1px dashed rgba(230, 69, 69, .9);
    background: rgba(230, 69, 69, .06);
}
.hotspot-area:hover { background: rgba(230, 69, 69, .2); border-style: solid; }
.hotspot-tooltip {
    position: absolute; top: -1.5em; left: 0; z-index: 6;
    background: rgba(0,0,0,.8); color: #fff; font-size: 12px;
    padding: 1px 8px; border-radius: 3px; white-space: nowrap;
    display: none; max-width: 240px; overflow: hidden; text-overflow: ellipsis;
}
.hotspot-area:hover .hotspot-tooltip { display: block; }

.layout-nav { display: flex; gap: 10px; margin-top: 14px; }
.btn {
    display: inline-block; padding: 7px 16px; border-radius: 4px;
    background: var(--primary); color: #fff; border: 1px solid var(--primary); cursor: pointer;
}
.btn:hover { background: var(--primary-dark); color: #fff; text-decoration: none; }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--sidebar); }
.btn-disabled { background: #f0f0f0; color: #bbb; border-color: #eee; cursor: not-allowed; }

.content-grid { display: grid; grid-template-columns: 1fr 300px; gap: 24px; }
.sidebar-section { margin-bottom: 24px; }
.plain-list { list-style: none; }
.plain-list li { padding: 5px 0; border-bottom: 1px dashed var(--border); }
.plain-list li.current { color: var(--primary); font-weight: 700; }
.meta { color: var(--muted); font-size: 13px; }

/* 期刊列表 */
.journal-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.journal-item { border: 1px solid var(--border); border-radius: 6px; overflow: hidden; transition: box-shadow .15s; }
.journal-item:hover { box-shadow: 0 2px 8px rgba(0,0,0,.1); }
.journal-item a { color: var(--text); }
.journal-item a:hover { text-decoration: none; }
.journal-image { aspect-ratio: 3/4; background: var(--sidebar); }
.journal-image img { width: 100%; height: 100%; object-fit: cover; }
.journal-info { padding: 8px 10px; }
.journal-info h3 { font-size: 15px; }
.journal-meta { color: var(--muted); font-size: 12px; }

.journal-card { display: flex; gap: 16px; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 14px; padding: 12px; }
.journal-card-link { display: flex; gap: 16px; color: var(--text); }
.journal-card-link:hover { text-decoration: none; }
.journal-card-cover { width: 140px; flex-shrink: 0; }
.journal-card-cover img { width: 100%; border-radius: 4px; }
.journal-card-info h3 { font-size: 18px; }

/* 文章 */
.article-main { min-width: 0; }
.article-title { font-size: 28px; line-height: 1.35; margin-bottom: 8px; }
.article-subtitle { font-size: 18px; color: var(--muted); font-weight: 400; margin-bottom: 10px; }
.article-meta { color: var(--muted); font-size: 13px; display: flex; gap: 16px; margin-bottom: 18px; }
.article-content { font-size: 17px; }
.article-content p { margin: 0 0 1em; }
.article-content img { display: block; margin: 12px auto; }
.article-nav { margin-top: 24px; border-top: 1px solid var(--border); padding-top: 12px; color: var(--muted); font-size: 14px; }
.news-list { list-style: none; }
.news-item { padding: 12px 0; border-bottom: 1px solid var(--border); }
.news-item-title a { font-size: 17px; font-weight: 600; }
.news-item-meta { color: var(--muted); font-size: 13px; margin-top: 4px; }
.news-item-summary { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* 分页 */
.pagination { display: flex; gap: 6px; margin-top: 20px; flex-wrap: wrap; }
.pagination a, .pagination span {
    padding: 5px 11px; border: 1px solid var(--border); border-radius: 4px; color: var(--text); font-size: 14px;
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.pagination a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 阅读器 */
.reader-page { }
.reader-header { background: var(--sidebar); border-bottom: 1px solid var(--border); padding: 10px 0; margin-bottom: 16px; }
.reader-header-inner { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.reader-issue { font-weight: 700; }
.reader-page-name { color: var(--muted); }
.reader-nav { margin-left: auto; display: flex; gap: 8px; }
.reader-nav a { color: var(--text); padding: 3px 8px; border: 1px solid var(--border); border-radius: 4px; background: #fff; }
.reader-nav a:hover { border-color: var(--primary); text-decoration: none; }
.reader-nav .disabled { color: #bbb; padding: 3px 8px; }
.reader-body { display: grid; grid-template-columns: 190px 1fr 240px; gap: 18px; }
.reader-thumbnails a { display: block; border: 2px solid transparent; margin-bottom: 8px; border-radius: 4px; overflow: hidden; }
.reader-thumbnails a.active { border-color: var(--primary); }
.reader-thumbnails img { width: 100%; }
.reader-thumbnails span { display: block; font-size: 12px; color: var(--muted); padding: 2px 4px; }
.reader-main { min-width: 0; }
.pdf-container { background: var(--sidebar); border: 1px solid var(--border); border-radius: 6px; padding: 8px; }
.pdf-toolbar { display: flex; gap: 10px; margin: 12px 0; }
.reader-layout-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.reader-layout-item { border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.reader-layout-item a { color: var(--text); }
.reader-layout-item a:hover { text-decoration: none; }
.reader-layout-name { display: block; padding: 6px 8px; font-size: 14px; }

/* 关于 */
.about-section, .contact-section { margin-bottom: 28px; }
.about-content { margin-top: 12px; }
.contact-info { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 12px; }
.contact-item { display: flex; gap: 12px; border: 1px solid var(--border); border-radius: 6px; padding: 12px; }
.contact-icon { font-size: 22px; }
.contact-item h4 { font-size: 14px; color: var(--muted); }
.contact-item p { font-size: 15px; }

/* 搜索 */
.search-results { margin-bottom: 24px; }
.search-keyword { color: var(--primary); }
.search-results h2 { margin-bottom: 12px; }

/* 阅读模式 */
.reading-mode-toggle { position: fixed; right: 18px; bottom: 18px; z-index: 99; display: flex; gap: 6px; align-items: center; }
.reading-mode-btn {
    background: var(--primary); color: #fff; border: none; border-radius: 50%;
    width: 44px; height: 44px; cursor: pointer; font-size: 14px; box-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.reading-mode-btn.active { background: var(--primary-dark); }
.font-size-controls { display: none; background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 4px; gap: 4px; }
.font-size-btn { border: 1px solid var(--border); background: #fff; width: 30px; height: 30px; border-radius: 4px; cursor: pointer; }
body.reading-mode { background: #f5f0e6; }
body.reading-mode .article-main { max-width: 46em; margin: 0 auto; }
body.reading-mode .article-content { color: #333; }

/* 页脚 */
.site-footer { border-top: 1px solid var(--border); background: var(--sidebar); padding: 24px 0; color: var(--muted); font-size: 13px; text-align: center; }

/* 响应式 */
@media (max-width: 900px) {
    .layout-detail, .content-grid, .reader-body { grid-template-columns: 1fr; }
    .journal-grid { grid-template-columns: repeat(3, 1fr); }
    .reader-layout-list { grid-template-columns: repeat(2, 1fr); }
    .search-form { margin-left: 0; width: 100%; }
    .search-form input[type=search] { flex: 1; width: auto; }
    .contact-info { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
    .journal-grid { grid-template-columns: repeat(2, 1fr); }
    .reader-layout-list { grid-template-columns: 1fr; }
}