/* =====================================================================
   711000 资讯中心 · 浅色编辑排版风
   结构参考 pixelwars「Chromatic」博客版式：
   blog-single（文章详情）/ blog-masonry（瀑布流列表）
   ===================================================================== */
:root {
    --b-bg: #ffffff;
    --b-soft: #f7f5f2;
    --b-soft-2: #fbfaf8;
    --b-text: #262626;
    --b-body: #454545;
    --b-muted: #8b8b8b;
    --b-line: #e7e4e0;
    --b-accent: #ab977a;
    --b-dark: #16181d;
    --b-serif: "Playfair Display", Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
    --b-sans: "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    background: var(--b-bg);
    color: var(--b-body);
    font-family: var(--b-sans);
    font-size: 15px;
    line-height: 1.8;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s; }
img { max-width: 100%; display: block; border: 0; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { font-family: var(--b-serif); color: var(--b-text); font-weight: 700; }

.b-container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.b-wrap-780 { max-width: 780px; margin: 0 auto; }

/* ---------------- 顶部导航（精简版：首页 / 图片工具 / 文本工具 / 新闻资讯） ---------------- */
.b-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--b-line);
}
.b-header-in { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.b-logo { display: flex; align-items: baseline; gap: 10px; font-family: var(--b-serif); font-size: 24px; color: var(--b-text); }
.b-logo em { font-style: normal; font-family: var(--b-sans); font-size: 12px; letter-spacing: 3px; color: var(--b-accent); text-transform: uppercase; }
.b-nav { display: flex; align-items: center; gap: 30px; }
.b-nav a { position: relative; font-size: 14px; letter-spacing: .5px; color: var(--b-body); }
.b-nav a::after {
    content: ""; position: absolute; left: 0; right: 100%; bottom: -8px;
    height: 2px; background: var(--b-accent); transition: right .3s;
}
.b-nav a:hover { color: var(--b-accent); }
.b-nav a:hover::after, .b-nav a.on::after { right: 0; }
.b-nav a.on { color: var(--b-accent); }
.b-nav-toggle { display: none; background: none; border: 0; font-size: 22px; color: var(--b-text); cursor: pointer; }

/* ---------------- 页头横幅 ---------------- */
.b-hero {
    padding: 58px 0 42px;
    border-bottom: 1px solid var(--b-line);
    background: var(--b-soft-2);
}
.b-hero .en {
    font-size: 12px; letter-spacing: 5px; text-transform: uppercase;
    color: var(--b-accent); margin-bottom: 14px;
}
.b-hero h1 { font-size: 42px; line-height: 1.2; letter-spacing: .5px; }
.b-hero p { margin-top: 14px; color: var(--b-muted); font-size: 15px; max-width: 720px; }
.b-crumbs { margin-top: 18px; font-size: 13px; color: var(--b-muted); }
.b-crumbs a { color: var(--b-muted); }
.b-crumbs a:hover { color: var(--b-accent); }
.b-crumbs span.sep { margin: 0 8px; color: #d3cfc9; }

/* ---------------- 主体两栏 ---------------- */
.b-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; padding: 56px 0 72px; align-items: start; }

/* ---------------- 瀑布流列表（CSS 多列实现，无需 JS） ---------------- */
.b-masonry { column-count: 3; column-gap: 30px; }
.b-masonry > * { break-inside: avoid; -webkit-column-break-inside: avoid; page-break-inside: avoid; margin-bottom: 30px; }

.b-card {
    background: #fff;
    border: 1px solid var(--b-line);
    transition: box-shadow .35s, border-color .35s, transform .35s;
}
.b-card:hover { border-color: #d9d2c8; box-shadow: 0 18px 40px rgba(22, 24, 29, .10); transform: translateY(-3px); }
.b-card .thumb { display: block; overflow: hidden; background: var(--b-soft); }
.b-card .thumb img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16 / 10; transition: transform .7s cubic-bezier(.2, .7, .3, 1); }
.b-card:hover .thumb img { transform: scale(1.06); }
.b-card .body { padding: 22px 24px 26px; }
.b-card h2 { font-size: 20px; line-height: 1.45; margin-bottom: 12px; }
.b-card h2 a:hover { color: var(--b-accent); }
.b-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12px; color: var(--b-muted); letter-spacing: .3px; }
.b-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: #d3cfc9; }
.b-meta a:hover { color: var(--b-accent); }
.b-cat {
    display: inline-block; padding: 2px 10px; border: 1px solid var(--b-line);
    font-size: 11px; letter-spacing: 1px; text-transform: uppercase; color: var(--b-accent);
}
.b-excerpt {
    margin-top: 12px; font-size: 14px; line-height: 1.8; color: #6d6d6d;
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.b-more { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 13px; color: var(--b-accent); letter-spacing: .5px; }
.b-more .arw { transition: transform .3s; }
.b-card:hover .b-more .arw { transform: translateX(5px); }

/* ---------------- 侧栏小部件 ---------------- */
.b-sidebar { position: sticky; top: 92px; }
.b-widget { margin-bottom: 40px; }
.b-widget h3 {
    font-size: 15px; letter-spacing: 1px; text-transform: uppercase;
    padding-bottom: 12px; margin-bottom: 18px; border-bottom: 2px solid var(--b-text);
}
.b-widget p { font-size: 14px; color: #6d6d6d; }
.b-widget-links li { border-bottom: 1px solid var(--b-line); }
.b-widget-links li:last-child { border-bottom: 0; }
.b-widget-links a { display: flex; justify-content: space-between; gap: 12px; padding: 11px 0; font-size: 14px; }
.b-widget-links a:hover { color: var(--b-accent); }
.b-widget-links span { color: #bbb5ac; font-size: 12px; white-space: nowrap; }
.b-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.b-tags a {
    padding: 5px 12px; font-size: 12px; color: #6d6d6d;
    border: 1px solid var(--b-line); transition: all .25s;
}
.b-tags a:hover { color: #fff; background: var(--b-accent); border-color: var(--b-accent); }
.b-tool-list li { display: flex; align-items: baseline; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--b-line); font-size: 14px; }
.b-tool-list li:last-child { border-bottom: 0; }
.b-tool-list .ico { font-size: 16px; }
.b-tool-list a:hover { color: var(--b-accent); }

/* ---------------- 分页 ---------------- */
.pagination { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; list-style: none; }
.pagination li a, .pagination li span {
    display: block; min-width: 38px; padding: 8px 12px; text-align: center;
    font-size: 13px; color: var(--b-body); border: 1px solid var(--b-line); transition: all .25s;
}
.pagination li a:hover { color: #fff; background: var(--b-accent); border-color: var(--b-accent); }
.pagination li.active span { color: #fff; background: var(--b-text); border-color: var(--b-text); }
.pagination li.disabled span { color: #c9c4bd; }

/* ---------------- 文章详情 ---------------- */
.b-post { padding: 52px 0 0; }
.b-post-head { text-align: center; padding-bottom: 34px; border-bottom: 1px solid var(--b-line); }
.b-post-head h1 { font-size: 38px; line-height: 1.35; margin-bottom: 20px; word-break: break-word; }
.b-post-head .b-meta { justify-content: center; }
.b-post-cover { margin: 34px auto 0; max-width: 880px; }
.b-post-cover img { width: 100%; border-radius: 2px; }
.b-entry-content {
    max-width: 780px; margin: 40px auto 0;
    font-size: 17px; line-height: 2.0; color: #3d3d3d; word-wrap: break-word;
}
.b-entry-content p { margin-bottom: 20px; }
.b-entry-content > p:first-of-type::first-letter {
    float: left; font-family: var(--b-serif); font-size: 62px; line-height: .9;
    padding: 6px 12px 0 0; color: var(--b-accent); font-weight: 700;
}
.b-entry-content h2 { font-size: 27px; line-height: 1.5; margin: 40px 0 18px; padding-bottom: 12px; border-bottom: 1px solid var(--b-line); }
.b-entry-content h3 { font-size: 22px; line-height: 1.5; margin: 32px 0 14px; }
.b-entry-content h4 { font-size: 18px; margin: 26px 0 12px; }
.b-entry-content ul, .b-entry-content ol { margin: 0 0 20px 4px; }
.b-entry-content li { position: relative; padding-left: 20px; margin-bottom: 8px; }
.b-entry-content ul li::before { content: ""; position: absolute; left: 4px; top: 14px; width: 6px; height: 6px; border-radius: 50%; background: var(--b-accent); }
.b-entry-content ol { list-style: decimal; }
.b-entry-content ol li { padding-left: 6px; }
.b-entry-content a { color: var(--b-accent); text-decoration: underline; text-underline-offset: 3px; }
.b-entry-content img { margin: 12px auto; border-radius: 2px; }
.b-entry-content blockquote {
    margin: 28px 0; padding: 20px 26px; background: var(--b-soft);
    border-left: 3px solid var(--b-accent); font-style: italic; color: #555;
}
.b-entry-content blockquote cite { display: block; margin-top: 10px; font-style: normal; font-size: 13px; color: var(--b-muted); }
.b-entry-content table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 14px; }
.b-entry-content th, .b-entry-content td { border: 1px solid var(--b-line); padding: 9px 12px; }
.b-entry-content th { background: var(--b-soft); font-family: var(--b-serif); }
.b-entry-content pre {
    background: var(--b-dark); color: #e8e6e1; padding: 18px 20px; overflow: auto;
    border-radius: 3px; font-size: 13.5px; line-height: 1.7; margin: 22px 0;
}
.b-entry-content code { font-family: Consolas, Monaco, "Courier New", monospace; }
.b-entry-content p code, .b-entry-content li code, .b-entry-content td code { background: var(--b-soft); padding: 2px 6px; border-radius: 3px; font-size: .9em; }

/* 关联工具入口 */
.b-tool-cta {
    display: flex; align-items: center; flex-wrap: wrap; gap: 14px;
    max-width: 780px; margin: 34px auto 0; padding: 20px 24px;
    background: var(--b-soft-2); border: 1px solid var(--b-line); border-left: 3px solid var(--b-accent);
}
.b-tool-cta .label { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--b-accent); }
.b-tool-cta .name { font-family: var(--b-serif); font-size: 18px; color: var(--b-text); }
.b-tool-cta .desc { flex: 1 1 240px; font-size: 13.5px; color: #6d6d6d; }
.b-tool-cta .btn {
    display: inline-block; padding: 9px 20px; font-size: 13px; color: #fff;
    background: var(--b-text); white-space: nowrap; transition: background .25s;
}
.b-tool-cta .btn:hover { background: var(--b-accent); }

/* 标签 / 分享 */
.b-post-foot { max-width: 780px; margin: 44px auto 0; }
.b-post-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 24px 0; border-top: 1px solid var(--b-line); border-bottom: 1px solid var(--b-line); }
.b-post-tags .label { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--b-muted); }
.b-share { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding: 22px 0; }
.b-share .label { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--b-muted); }
.b-share a {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; font-size: 13px; color: #6d6d6d;
    border: 1px solid var(--b-line); transition: all .25s;
}
.b-share a:hover { color: #fff; background: var(--b-accent); border-color: var(--b-accent); }

/* 上一篇 / 下一篇 */
.b-nav-single { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 780px; margin: 10px auto 0; }
.b-nav-single .box { padding: 20px 22px; border: 1px solid var(--b-line); transition: all .3s; }
.b-nav-single .box:hover { border-color: var(--b-accent); background: var(--b-soft-2); }
.b-nav-single h4 { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--b-muted); margin-bottom: 8px; font-family: var(--b-sans); }
.b-nav-single .t { font-family: var(--b-serif); font-size: 16px; color: var(--b-text); }
.b-nav-single .next { text-align: right; }

/* 作者卡片 */
.b-author { display: flex; gap: 22px; max-width: 780px; margin: 40px auto 0; padding: 28px 30px; background: var(--b-soft-2); border: 1px solid var(--b-line); }
.b-author .avatar {
    flex: 0 0 72px; width: 72px; height: 72px; border-radius: 50%; overflow: hidden;
    background: var(--b-accent); color: #fff; display: flex; align-items: center; justify-content: center;
    font-family: var(--b-serif); font-size: 28px;
}
.b-author .avatar img { width: 100%; height: 100%; object-fit: cover; }
.b-author h3 { font-size: 19px; margin-bottom: 6px; }
.b-author h3 span { font-family: var(--b-sans); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--b-muted); margin-left: 10px; }
.b-author p { font-size: 14px; color: #6d6d6d; }

/* 相关阅读 */
.b-related { max-width: 880px; margin: 56px auto 0; }
.b-related > h2 {
    font-size: 15px; letter-spacing: 2px; text-transform: uppercase; color: var(--b-text);
    padding-bottom: 12px; margin-bottom: 24px; border-bottom: 2px solid var(--b-text);
}
.b-related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.b-related-grid .b-card .body { padding: 16px 18px 20px; }
.b-related-grid .b-card h2 { font-size: 16px; margin-bottom: 8px; }
.b-related-grid .b-meta { font-size: 11.5px; }

.b-back { text-align: center; margin: 50px 0 0; }
.b-back a {
    display: inline-block; padding: 11px 30px; font-size: 13.5px; letter-spacing: 1px;
    border: 1px solid var(--b-line); transition: all .3s;
}
.b-back a:hover { color: #fff; background: var(--b-text); border-color: var(--b-text); }

/* ---------------- 页脚 ---------------- */
.b-footer { margin-top: 20px; background: var(--b-dark); color: #9a9a9a; padding: 56px 0 0; }
.b-footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 40px; }
.b-footer .b-logo { color: #fff; margin-bottom: 14px; }
.b-footer p { font-size: 13.5px; line-height: 1.9; }
.b-footer h4 { font-family: var(--b-sans); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: #fff; margin-bottom: 18px; }
.b-footer li { margin-bottom: 10px; font-size: 13.5px; }
.b-footer a:hover { color: var(--b-accent); }
.b-footer .copy { border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0; font-size: 13px; text-align: center; }
.b-footer .copy a { color: var(--b-accent); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
    .b-masonry { column-count: 2; }
    .b-layout { grid-template-columns: minmax(0, 1fr) 260px; gap: 34px; }
}
@media (max-width: 900px) {
    .b-layout { grid-template-columns: 1fr; }
    .b-sidebar { position: static; }
    .b-hero h1 { font-size: 32px; }
    .b-post-head h1 { font-size: 30px; }
    .b-footer-grid { grid-template-columns: 1fr 1fr; }
    .b-related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
    .b-nav-toggle { display: block; }
    .b-nav {
        display: none; position: absolute; top: 72px; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 0; background: #fff;
        border-bottom: 1px solid var(--b-line); padding: 6px 24px 14px;
    }
    .b-nav.open { display: flex; }
    .b-nav a { padding: 11px 0; border-bottom: 1px solid var(--b-soft); }
    .b-nav a::after { display: none; }
    .b-masonry { column-count: 1; }
    .b-nav-single { grid-template-columns: 1fr; }
    .b-nav-single .next { text-align: left; }
    .b-author { flex-direction: column; }
    .b-entry-content { font-size: 16px; }
    .b-related-grid { grid-template-columns: 1fr; }
    .b-footer-grid { grid-template-columns: 1fr; }
}