/* ===== theme618 common.css —— D 骨架 左侧垂直导航 + 内容区（全宽）===== */
:root {
    --color-primary: #3f6212;
    --color-primary-dark: #365314;
    --color-primary-light: #f7fee7;
    --color-accent: #65a30d;
    --color-text-dark: #1f2937;
    --color-text-muted: #6b7280;
    --color-text-light: #9ca3af;
    --color-bg: #f6f8f4;
    --color-bg-card: #ffffff;
    --color-border: #e5e7eb;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 3px rgba(63, 98, 18, 0.06);
    --shadow-md: 0 6px 18px rgba(63, 98, 18, 0.12);
    --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
}

html, body { height: 100%; }
body.theme618-page {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-dark);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; }
h1, h2, h3, h4 { margin: 0; line-height: 1.4; }
ul { margin: 0; padding: 0; list-style: none; }

/* ===== SEO/A11y 必备 ===== */
.skip-link, .plt-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 2000;
    background: var(--color-primary);
    color: #fff;
    padding: 10px 18px;
    border-radius: 0 0 6px 0;
}
.skip-link:focus, .plt-skip:focus { left: 0; color: #fff; }
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }

.article-summary {
    margin: 18px 0;
    padding: 18px 20px;
    background: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
}
.article-summary-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.summary-deco { color: var(--color-primary); }
.article-summary-title { font-size: 16px; font-weight: 600; color: var(--color-primary-dark); }
.article-summary-text { margin: 0; color: var(--color-text-muted); }
.article-summary-cite { margin-top: 10px; font-size: 13px; color: var(--color-text-light); }
.article-summary-cite code { background: #eef3e4; padding: 2px 6px; border-radius: 3px; font-size: 12px; word-break: break-all; }

/* ===== D 布局：左导航 + 内容 ===== */
.plt-layout { display: flex; min-height: 100vh; }
.plt-sidebar {
    width: 240px;
    flex-shrink: 0;
    background: #0f1d0a;
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.plt-kit { display: flex; align-items: center; padding: 18px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.plt-logo { display: flex; align-items: center; min-width: 0; }
.plt-logo-text { color: #fff; font-size: 18px; font-weight: 700; letter-spacing: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-nav { flex: 1; min-width: 0; padding: 14px 0; }
.plt-nav > a { display: block; padding: 11px 22px; color: #cbd5e1; font-size: 15px; border-left: 3px solid transparent; }
.plt-nav > a .fa { width: 20px; margin-right: 4px; color: #64748b; }
.plt-nav > a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.plt-nav > a.active { color: #fff; background: rgba(101, 163, 13, 0.18); border-left-color: var(--color-accent); }
.plt-subnav { padding: 2px 0 10px 30px; }
.plt-subnav a { display: block; padding: 6px 16px; color: #94a3b8; font-size: 13px; border-left: 1px solid #334155; }
.plt-subnav a:hover { color: #fff; }
.plt-side-foot { padding: 16px 22px; border-top: 1px solid rgba(255, 255, 255, 0.08); font-size: 13px; color: #94a3b8; }
.plt-side-foot p { margin: 2px 0; }
.plt-content { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.plt-tgl { display: none; position: fixed; top: 12px; left: 12px; z-index: 1200; width: 42px; height: 42px; border: none; border-radius: var(--radius-sm); background: var(--color-primary); color: #fff; font-size: 20px; line-height: 1; }
.plt-overlay { display: none; }

/* ===== 内容区（全宽）===== */
.plt-main-row { padding: 26px 30px 40px; max-width: 1280px; margin: 0 auto; }
.plt-crumb { padding: 14px 28px; background: #fff; border-bottom: 1px solid var(--color-border); font-size: 13px; color: var(--color-text-muted); }
.plt-crumb a { color: var(--color-text-muted); }
.plt-crumb a:hover { color: var(--color-primary); }
.plt-crumb i { margin: 0 6px; color: #cbd5e1; }
.plt-crumb span { color: var(--color-primary); }

/* ===== 首页 Hero ===== */
.plt-hero {
    background:
        radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.12), transparent 40%),
        linear-gradient(135deg, #3f6212 0%, #4d7c0f 55%, #365314 100%);
    color: #fff;
    padding: 54px 20px;
    text-align: center;
}
.plt-hero-emoji { font-size: 50px; line-height: 1; display: inline-block; margin-bottom: 14px; }
.plt-hero h1 { font-size: 30px; font-weight: 700; margin-bottom: 12px; letter-spacing: 1px; }
.plt-hero p { max-width: 560px; margin: 0 auto 22px; color: #e3efd0; font-size: 15px; }
.plt-hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.plt-btn { display: inline-flex; align-items: center; padding: 11px 26px; border-radius: 999px; font-size: 15px; font-weight: 600; }
.plt-btn-solid { background: #fff; color: var(--color-primary-dark); }
.plt-btn-solid:hover { background: #eef5e2; color: var(--color-primary-dark); }
.plt-btn-ghost { border: 1px solid rgba(255, 255, 255, 0.6); color: #fff; }
.plt-btn-ghost:hover { background: rgba(255, 255, 255, 0.12); color: #fff; }

/* ===== 首页 拼贴精选（已弃用）===== */
.plt-mosaic { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 24px; }
.plt-mosaic-lead { display: block; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; transition: transform 0.25s, box-shadow 0.25s; }
.plt-mosaic-lead:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.plt-mosaic-cover { display: block; position: relative; padding-top: 52%; background: var(--color-primary-light); overflow: hidden; }
.plt-mosaic-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.plt-mosaic-cover span { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 56px; }
.plt-mosaic-body { padding: 16px 20px; }
.plt-mosaic-tag { display: inline-block; padding: 2px 10px; border-radius: 999px; background: var(--color-primary); color: #fff; font-size: 12px; margin-bottom: 8px; }
.plt-mosaic-body h1 { font-size: 21px; font-weight: 700; margin-bottom: 8px; }
.plt-mosaic-body p { margin: 0; color: var(--color-text-muted); font-size: 14px; }
.plt-mosaic-side { display: flex; flex-direction: column; gap: 10px; }
.plt-mosaic-item { display: flex; flex-direction: column; gap: 4px; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 14px 16px; transition: border-color 0.2s; }
.plt-mosaic-item:hover { border-color: var(--color-primary); }
.plt-mosaic-item-title { color: var(--color-text-dark); font-size: 15px; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.plt-mosaic-item:hover .plt-mosaic-item-title { color: var(--color-primary); }
.plt-mosaic-item-meta { font-size: 12px; color: var(--color-text-light); }

/* ===== 区块模块 ===== */
.plt-section { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 20px 22px; margin-bottom: 22px; box-shadow: var(--shadow-sm); }
.plt-section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--color-primary-light); }
.plt-section-head h2 { font-size: 18px; font-weight: 700; padding-left: 10px; border-left: 4px solid var(--color-primary); line-height: 1.2; }
.plt-more { font-size: 13px; color: var(--color-text-muted); }
.plt-more:hover { color: var(--color-primary); }

/* 卡片网格 */
.plt-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.plt-card { display: block; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; transition: transform 0.25s, box-shadow 0.25s; }
.plt-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.plt-card-cover { display: block; position: relative; padding-top: 62%; background: var(--color-primary-light); overflow: hidden; }
.plt-card-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.plt-card-cover span { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 44px; }
.plt-card-body { padding: 12px 14px 14px; }
.plt-card-title { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 15px; font-weight: 600; min-height: 42px; word-break: break-word; }
.plt-card:hover .plt-card-title { color: var(--color-primary); }
.plt-card-meta { display: block; margin-top: 8px; font-size: 12px; color: var(--color-text-light); }

/* 文章流 */
.plt-feeds { display: flex; flex-direction: column; }
.plt-feed { border-bottom: 1px dashed var(--color-border); }
.plt-feed:last-child { border-bottom: none; }
.plt-feed-link { display: flex; align-items: center; gap: 16px; padding: 13px 4px; min-width: 0; }
.plt-feed-index { flex-shrink: 0; width: 30px; height: 30px; border-radius: var(--radius-sm); background: var(--color-primary-light); color: var(--color-primary); font-weight: 700; font-size: 13px; display: flex; align-items: center; justify-content: center; }
.plt-feed-main { flex: 1; min-width: 0; }
.plt-feed-title { display: block; color: var(--color-text-dark); font-size: 15px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-feed-link:hover .plt-feed-title { color: var(--color-primary); }
.plt-feed-excerpt { display: block; margin-top: 3px; color: var(--color-text-muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-feed-meta { flex-shrink: 0; font-size: 12px; color: var(--color-text-light); margin-left: 8px; }

/* ===== 列表（横卡左图右文）===== */
.plt-hlist { display: flex; flex-direction: column; }
.plt-hrow { display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--color-border); min-width: 0; }
.plt-hrow:last-child { border-bottom: none; }
.plt-hrow:hover .plt-htitle { color: var(--color-primary); }
.plt-hcover { flex: 0 0 160px; height: 105px; position: relative; background: var(--color-primary-light); border-radius: var(--radius-sm); overflow: hidden; }
.plt-hcover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.plt-hcover span { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 42px; }
.plt-hbody { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.plt-htitle { font-size: 16px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-hexcerpt { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin: 6px 0 0; color: var(--color-text-muted); font-size: 13px; }
.plt-hmeta { margin-top: auto; display: flex; gap: 10px; font-size: 12px; color: var(--color-text-light); }
.plt-text-cat { padding: 2px 8px; border-radius: 999px; background: var(--color-primary-light); color: var(--color-primary); font-size: 12px; }

/* ===== 纯文字列表 ===== */
.plt-textlist { display: flex; flex-direction: column; }
.plt-text-item { display: flex; align-items: center; gap: 14px; padding: 13px 2px; border-bottom: 1px dashed var(--color-border); }
.plt-text-item:last-child { border-bottom: none; }
.plt-text-title { flex: 1; min-width: 0; color: var(--color-text-dark); font-size: 15px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-text-item:hover .plt-text-title { color: var(--color-primary); }
.plt-text-meta { flex-shrink: 0; font-size: 12px; color: var(--color-text-light); }

/* ===== 详情（居中）===== */
.plt-article { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 30px 32px; box-shadow: var(--shadow-sm); }
.plt-article-head { text-align: center; margin-bottom: 20px; }
.plt-article-cat { display: inline-block; padding: 3px 12px; border-radius: 999px; background: var(--color-primary-light); color: var(--color-primary); font-size: 13px; margin-bottom: 12px; }
.plt-article-title { font-size: 26px; font-weight: 700; line-height: 1.4; }
.plt-article-meta { margin-top: 10px; display: flex; justify-content: center; gap: 18px; font-size: 13px; color: var(--color-text-muted); }
.plt-article-cover { display: block; width: 100%; max-height: 420px; object-fit: cover; border-radius: var(--radius-sm); margin: 0 auto 18px; }
.plt-article-content { max-width: 720px; margin: 0 auto; font-size: 16px; line-height: 1.9; color: #374151; word-break: break-word; }
.plt-article-content h2 { font-size: 21px; margin: 26px 0 12px; padding-left: 12px; border-left: 4px solid var(--color-primary); }
.plt-article-content h3 { font-size: 18px; margin: 20px 0 10px; }
.plt-article-content p { margin: 12px 0; }
.plt-article-content img { display: block; margin: 16px auto; border-radius: var(--radius-sm); }
.plt-article-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--color-border); }
.plt-nav-item { flex: 1; min-width: 0; display: block; padding: 12px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
.plt-nav-item:hover { border-color: var(--color-primary); }
.plt-nav-next { text-align: right; }
.plt-nav-label { display: block; font-size: 12px; color: var(--color-text-muted); margin-bottom: 4px; }
.plt-nav-title { display: block; color: var(--color-text-dark); font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-nav-spacer { flex: 1; min-width: 0; }
.plt-related { margin-top: 22px; }
.plt-newlist { display: flex; flex-direction: column; }
.plt-new-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 2px; border-bottom: 1px dashed var(--color-border); }
.plt-new-item:last-child { border-bottom: none; }
.plt-new-title { flex: 1; min-width: 0; color: var(--color-text-dark); font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-new-item:hover .plt-new-title { color: var(--color-primary); }
.plt-new-date { flex-shrink: 0; font-size: 12px; color: var(--color-text-light); }

/* ===== 侧边栏组件（备用于其他页面）===== */
.plt-widget { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: 20px; box-shadow: var(--shadow-sm); }
.plt-widget-head { padding: 12px 16px; border-bottom: 1px solid var(--color-border); }
.plt-widget-title { font-size: 15px; font-weight: 700; padding-left: 10px; border-left: 3px solid var(--color-primary); line-height: 1.2; }
.plt-widget-title .fa { margin-right: 6px; color: var(--color-primary); }
.plt-widget-body { padding: 10px 16px; }
.plt-navlist li a { display: block; padding: 8px 4px; color: var(--color-text-dark); font-size: 14px; border-bottom: 1px solid #f1f5f9; }
.plt-navlist li a:hover { color: var(--color-primary); }
.plt-navlist li.active a { color: var(--color-primary); font-weight: 600; }
.plt-nav-divider { height: 1px; background: var(--color-border); margin: 6px 0; }
.plt-nav-sub a { padding-left: 20px; font-size: 13px; color: var(--color-text-muted); }
.plt-rank-item { display: flex; align-items: center; gap: 10px; padding: 9px 0; }
.plt-rank-num { flex-shrink: 0; width: 22px; height: 22px; border-radius: var(--radius-sm); background: #f1f5f9; color: var(--color-text-muted); font-size: 12px; font-weight: 600; display: flex; align-items: center; justify-content: center; }
.plt-rank-num.top { background: var(--color-primary); color: #fff; }
.plt-rank-content { flex: 1; min-width: 0; }
.plt-rank-title { display: block; color: var(--color-text-dark); font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-rank-item:hover .plt-rank-title { color: var(--color-primary); }

/* ===== 图片列表 ===== */
.plt-img-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.plt-img-card { display: block; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; }
.plt-img-cover { display: block; position: relative; padding-top: 75%; background: #f1f5f9; overflow: hidden; }
.plt-img-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.plt-img-body { padding: 8px 10px; }
.plt-img-title { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plt-img-view { font-size: 12px; color: var(--color-text-light); }

/* ===== 单页/留言 ===== */
.plt-single-content { font-size: 15px; line-height: 1.9; color: #374151; }
.plt-subnav { margin-bottom: 16px; }
.plt-subnav ul { display: flex; flex-wrap: wrap; gap: 8px; }
.plt-subnav li a { display: inline-block; padding: 6px 14px; border: 1px solid var(--color-border); border-radius: 999px; font-size: 13px; color: var(--color-text-muted); }
.plt-subnav li.active a { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.plt-contact-form { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--color-border); }
.plt-contact-form h3 { font-size: 17px; margin-bottom: 14px; }
.plt-contact-form .form-row { display: flex; gap: 14px; }
.plt-contact-form label { display: flex; flex-direction: column; font-size: 13px; color: var(--color-text-muted); margin-bottom: 12px; }
.plt-contact-form label span { margin-bottom: 4px; }
.plt-contact-form .inp { width: 100%; padding: 9px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 14px; }
.plt-contact-form textarea { width: 100%; min-height: 120px; padding: 10px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
.plt-contact-form .msgbtn-box { display: flex; gap: 10px; }
.plt-contact-form .btn-contact { padding: 10px 30px; border: none; border-radius: 999px; background: var(--color-primary); color: #fff; cursor: pointer; }
.plt-contact-form .btn-contact-reset { padding: 10px 26px; border: 1px solid var(--color-border); border-radius: 999px; background: #fff; color: var(--color-text-muted); cursor: pointer; }
.plt-price { color: var(--color-primary-dark); font-weight: 700; }

/* ===== 页脚 ===== */
.plt-foot { background: #0f1d0a; color: #94a3b8; padding: 26px 28px; text-align: center; }
.plt-foot-nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 14px; }
.plt-foot-nav a { color: #cbd5e1; font-size: 14px; }
.plt-foot-nav a:hover { color: #fff; }
.plt-copy { font-size: 13px; }
.plt-copy a { color: #94a3b8; }
.plt-copy a:hover { color: #fff; }

/* ===== 分页 ===== */
.pagination-box { text-align: center; margin-top: 24px; }
.pagination { display: inline-flex; gap: 6px; }
.pagination li a, .pagination li span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px; padding: 0 12px;
    border: 1px solid var(--color-border); background: #fff; color: var(--color-text-dark);
    border-radius: var(--radius-sm); font-size: 14px;
}
.pagination li a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .active a, .pagination .active span { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ===== 返回顶部 ===== */
#floatbtn { position: fixed; right: 22px; bottom: 30px; z-index: 900; }
#back-to-top { display: flex; align-items: center; justify-content: center; width: 42px; height: 42px; line-height: 1; padding: 0; border: none; border-radius: var(--radius-md); background: var(--color-primary); color: #fff; box-shadow: var(--shadow-md); }
#back-to-top i { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; line-height: 1; }
#back-to-top:hover { background: var(--color-primary-dark); }

/* ===== 响应式 ===== */
@media (max-width: 991px) {
    .plt-grid { grid-template-columns: repeat(2, 1fr); }
    .plt-img-grid { grid-template-columns: repeat(2, 1fr); }
    .plt-mosaic { grid-template-columns: 1fr; }
}
@media (max-width: 767px) {
    body.theme618-page { font-size: 14px; }
    .plt-layout { display: block; }
    .plt-sidebar { position: fixed; left: 0; top: 0; height: 100vh; width: 240px; z-index: 1100; transform: translateX(-100%); transition: transform 0.3s; }
    body.plt-open .plt-sidebar { transform: translateX(0); }
    .plt-tgl { display: flex; align-items: center; justify-content: center; }
    body.plt-open .plt-overlay { display: block; position: fixed; inset: 0; background: rgba(15, 29, 10, 0.5); z-index: 1050; }
    .plt-main-row { padding: 16px 12px 30px; }
    .plt-crumb { padding: 12px 14px; }
    .plt-section { padding: 16px 14px; }
    .plt-hero { padding: 34px 16px; }
    .plt-hero h1 { font-size: 23px; }
    .plt-grid { grid-template-columns: 1fr; }
    .plt-img-grid { grid-template-columns: 1fr; }
    .plt-feed-link { gap: 10px; }
    .plt-feed-meta { display: none; }
    .plt-hrow { flex-direction: column; gap: 10px; }
    .plt-hcover { flex: none; height: 160px; }
    .plt-hmeta { margin-top: 8px; }
    .plt-article { padding: 18px 16px; }
    .plt-article-title { font-size: 21px; }
    .plt-article-meta { flex-wrap: wrap; gap: 10px; }
    .plt-text-item { align-items: flex-start; flex-direction: column; gap: 4px; }
    .plt-text-meta { align-self: flex-end; }
    .plt-contact-form .form-row { flex-direction: column; gap: 0; }
    .plt-foot { padding: 20px 14px; }
}