body { padding-top: 70px; } /* Fix fixed-top navbar overlap */
        /* Removed .inner/.outer overrides to respect theme post.css */
        
        .version-switcher { padding: 10px 15px; margin: 20px 0; border: 1px solid #e9ecef; background: #f8f9fa; border-radius: 4px; font-family: monospace; }
        .version-switcher a { margin-right: 10px; color: #888; text-decoration: none; }
        .version-switcher a.current { font-weight: bold; color: #333; }

        .version-nav { margin-right: 8px; }
        .skip-link {
            position: fixed;
            top: 8px;
            left: 8px;
            z-index: 1100;
            padding: 9px 12px;
            border-radius: 4px;
            background: #fff;
            color: #222;
            transform: translateY(-150%);
        }
        .skip-link:focus { transform: translateY(0); }
        .version-menu-trigger {
            min-height: 44px;
            margin: 3px 0;
            padding: 8px 14px;
            border: 1px solid #cfcfcf;
            border-radius: 6px;
            background: #fff;
            color: #444;
            font-size: 16px;
            line-height: 24px;
            cursor: pointer;
            touch-action: manipulation;
        }
        .version-menu-trigger:hover { background: #f3f3f3; }
        .version-menu-trigger:active { background: #e8e8e8; }
        .version-menu-trigger:focus-visible,
        .version-panel a:focus-visible,
        .version-panel button:focus-visible {
            outline: 2px solid #555;
            outline-offset: 2px;
        }
        .version-count {
            display: inline-block;
            min-width: 22px;
            margin-left: 5px;
            padding: 0 6px;
            border-radius: 999px;
            background: #ececec;
            text-align: center;
            font-size: 13px;
        }
        .version-panel-backdrop {
            position: fixed;
            inset: 0;
            z-index: 1040;
            background: transparent;
        }
        .version-panel {
            position: fixed;
            top: 64px;
            right: 14px;
            z-index: 1050;
            width: min(320px, calc(100vw - 28px));
            max-height: min(70vh, 640px);
            overflow: hidden;
            border: 1px solid #d8d8d8;
            border-radius: 8px;
            background: #fff;
            box-shadow: 0 12px 32px rgba(0, 0, 0, .16);
            color: #333;
            font-size: 14px;
        }
        .version-panel[hidden],
        .version-panel-backdrop[hidden] { display: none !important; }
        body.version-panel-open { overflow: hidden; }
        .version-panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 52px;
            padding: 6px 8px 6px 14px;
            border-bottom: 1px solid #e5e5e5;
        }
        .version-panel-title {
            width: auto;
            margin: 0;
            padding: 0;
            border: 0;
            color: #333;
            text-align: left;
            font-family: inherit;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.35;
        }
        .version-panel-title span { margin-left: 5px; color: #666; font-size: 12px; font-weight: 400; }
        .version-panel-close {
            width: 36px;
            height: 36px;
            padding: 0;
            border: 0;
            border-radius: 50%;
            background: transparent;
            color: #555;
            font-size: 22px;
            line-height: 36px;
            cursor: pointer;
            touch-action: manipulation;
        }
        .version-panel-close:hover { background: #eee; }
        .version-list {
            position: relative;
            max-height: calc(min(70vh, 640px) - 53px);
            margin: 0;
            padding: 6px 8px;
            overflow-y: auto;
            list-style: none;
        }
        .version-list::before {
            position: absolute;
            top: 20px;
            bottom: 20px;
            left: 19px;
            width: 1px;
            background: #dedede;
            content: "";
        }
        .version-item {
            position: relative;
            margin: 0;
            padding: 8px 9px 8px 30px;
            border-radius: 5px;
            transition: background-color .14s ease;
        }
        .version-item::before {
            position: absolute;
            top: 19px;
            left: 7px;
            z-index: 1;
            width: 9px;
            height: 9px;
            border: 2px solid #aaa;
            border-radius: 50%;
            background: #fff;
            content: "";
        }
        .version-item:hover,
        .version-item:focus-within { background: #f6f6f6; }
        .version-item.current { background: #f2f2f2; }
        .version-item.current::before { border-color: #555; background: #555; }
        .version-item-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
        .version-date-link,
        .version-current-label { color: #333; font-weight: 600; line-height: 28px; text-decoration: none; }
        .version-date-link { display: inline-flex; min-height: 28px; align-items: center; }
        .version-panel a { cursor: pointer; }
        .version-date-link:hover { background: transparent; text-decoration: underline; }
        .version-current-badge {
            padding: 1px 6px;
            border-radius: 999px;
            background: #e0e0e0;
            color: #4f4f4f;
            font-size: 11px;
            font-weight: 400;
        }
        .version-item-meta { display: flex; min-height: 28px; align-items: center; justify-content: space-between; gap: 8px; }
        .version-diff-summary { display: inline-flex; min-width: 0; align-items: center; gap: 6px; color: #737373; font-size: 12px; line-height: 1.4; white-space: nowrap; }
        .version-change-label { color: #666; }
        .version-change { font-variant-numeric: tabular-nums; }
        .version-change.added { color: #3f7650; }
        .version-change.removed { color: #99524e; }
        .version-change.changed { color: #80691f; }
        .version-no-change, .version-earliest { color: #666; }
        .version-diff-link { display: inline-flex; min-height: 28px; flex: 0 0 auto; align-items: center; gap: 3px; color: #555; font-size: 12px; font-weight: 500; text-decoration: none; touch-action: manipulation; }
        .version-diff-link:hover { background: transparent; color: #111; text-decoration: underline; }

        .article-diff-preview {
            position: fixed;
            z-index: 1045;
            overflow: hidden;
            border: 1px solid #cfcfcf;
            background: #fff;
            box-shadow: 0 10px 28px rgba(0, 0, 0, .12);
            color: #333;
            pointer-events: none;
        }
        .article-diff-preview[hidden] { display: none !important; }
        .article-diff-preview-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            padding: 14px 18px 12px;
            border-bottom: 1px solid #ddd;
            background: #fafafa;
        }
        .article-diff-preview-kicker { color: #666; font-size: 12px; }
        .article-diff-preview-header h2 {
            width: auto;
            margin: 2px 0 0;
            padding: 0;
            border: 0;
            color: #333;
            text-align: left;
            font-family: inherit;
            font-size: 17px;
            font-weight: 600;
            line-height: 1.35;
        }
        .article-diff-preview-header p { margin: 0; color: #555; text-align: right; font-size: 13px; }
        .article-diff-preview-header small { display: block; margin-top: 2px; color: #666; font-size: 11px; }
        .article-diff-preview-content {
            max-height: calc(100% - 69px);
            padding: 14px 18px 24px;
            overflow: hidden;
            font-size: 15px;
            line-height: 1.65;
        }
        .version-item.previewing { background: #ececec; }

        .diff-header { margin-bottom: 28px; text-align: center; }
        .diff-header h1 { margin-bottom: 12px; }
        .diff-range { color: #666; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
        .diff-summary { margin: 10px 0; color: #555; }
        .diff-actions { margin: 18px 0 0; }
        .diff-actions a { display: inline-block; padding: 8px 12px; border: 1px solid #ccc; border-radius: 6px; color: #444; }
        .diff-actions a:hover { background: #f2f2f2; }
        .diff-legend { display: flex; justify-content: center; gap: 16px; margin: 20px 0 30px; color: #555; font-size: 14px; }
        .diff-legend span::before { display: inline-block; width: 10px; height: 10px; margin-right: 6px; border-radius: 2px; content: ""; }
        .diff-legend .added::before { background: #b9dfc6; }
        .diff-legend .removed::before { background: #efc0bd; }
        .diff-legend .changed::before { background: #ead89c; }
        .diff-context { margin: 34px 0 12px; color: #666; font-weight: 600; }
        .diff-block { position: relative; margin: 10px 0; padding: 12px 14px 12px 34px; border-left: 4px solid; border-radius: 4px; }
        .diff-block > :first-child:not(.diff-marker) { margin-top: 0; }
        .diff-block > :last-child { margin-bottom: 0; }
        .diff-added { border-color: #4e9565; background: #eef8f1; }
        .diff-removed { border-color: #bb615b; background: #fff1f0; }
        .diff-changed { border-color: #aa8b2c; background: #fff9e6; }
        .diff-marker { position: absolute; top: 12px; left: 11px; color: #555; font-family: monospace; font-weight: 700; }
        .diff-inline { line-height: 1.8; white-space: pre-wrap; }
        .diff-inline del { background: #f1b8b5; color: #632c28; text-decoration-thickness: 1px; }
        .diff-inline ins { background: #bce3c8; color: #245d35; text-decoration: none; }
        .diff-preformatted .diff-inline { font-family: Inconsolata, Consolas, monospace; font-size: 90%; }
        .diff-empty, .diff-loading, .diff-error { padding: 24px; border: 1px solid #ddd; border-radius: 6px; text-align: center; }
        .diff-error { border-color: #d7aaa7; background: #fff4f3; color: #7d302b; }
        
        .navbar-brand { font-size: 20px; font-weight: bold; }
        .navbar-nav > li > a { font-size: 20px; }
        body.mobile .navbar-nav > li > a { font-size: 17px; line-height: 24px; }
        
        /* Reduce gap between navbar and content */
        div.outer { margin-top: 30px; }

        .site-footer { margin: 50px 0 30px; padding: 0 15px; font-size: 14px; line-height: 1.6; }
        .site-footer a { color: inherit; text-decoration: underline; }

        @media (max-width: 767px) {
            .version-nav { margin: 0; }
            .version-menu-trigger { display: block; width: 100%; margin: 4px 0; text-align: left; }
            .version-panel-backdrop { background: rgba(0, 0, 0, .28); }
            .version-panel {
                top: auto;
                right: 0;
                bottom: 0;
                width: 100%;
                max-height: min(72dvh, 640px);
                border-right: 0;
                border-bottom: 0;
                border-left: 0;
                border-radius: 14px 14px 0 0;
            }
            .version-panel-close { width: 44px; height: 44px; line-height: 44px; }
            .version-list { max-height: calc(min(72dvh, 640px) - 53px); padding-bottom: max(12px, env(safe-area-inset-bottom)); }
            .version-date-link, .version-diff-link { min-height: 36px; }
            .article-diff-preview { display: none !important; }
            .diff-legend { flex-wrap: wrap; gap: 8px 16px; }
            .diff-block { padding-right: 10px; padding-left: 30px; }
        }

        @media (prefers-reduced-motion: reduce) {
            .version-item { transition: none; }
        }
        
        /* Removed custom flexbox list styling to match demo vertical style */