:root {
            --bg: #faf9f7; --surface: #fff; --ink: #111118; --ink-2: #3a3a48;
            --ink-3: #505060; --ink-4: #666680; --accent: #b84515; --accent-l: #ffecd6;
            --border: #eae8e4; --bl: #f2f0ed;
            --px: clamp(20px, 5vw, 64px); --mw: 820px;
        }
        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; scroll-padding-top: 68px; }
        body { font-family: 'Noto Sans SC', system-ui, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.85; -webkit-font-smoothing: antialiased; }
        ::selection { background: var(--accent-l); }
        a { color: inherit; text-decoration: none; }
        .nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(250,249,247,0.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
        .nav-in { max-width: var(--mw); margin: 0 auto; padding: 0 var(--px); height: 60px; display: flex; align-items: center; justify-content: space-between; }
        .logo { font-family: 'Noto Serif SC', serif; font-size: 19px; font-weight: 700; }
        .logo em { font-style: normal; color: var(--accent); }
        .back { font-size: 14px; color: var(--ink-4); transition: color 0.2s; }
        .back:hover { color: var(--accent); }
        .article-header { padding: 120px var(--px) 48px; max-width: var(--mw); margin: 0 auto; }
        .article-tag { display: inline-block; font-size: 13px; padding: 4px 14px; background: #fffde0; color: #b45309; border-radius: 100px; font-weight: 500; margin-bottom: 20px; }
        .article-header h1 { font-family: 'Noto Serif SC', serif; font-size: clamp(28px, 4vw, 42px); font-weight: 700; line-height: 1.35; margin-bottom: 16px; }
        .article-meta { font-size: 14px; color: var(--ink-4); display: flex; gap: 16px; flex-wrap: wrap; }
        .article-body { max-width: var(--mw); margin: 0 auto; padding: 0 var(--px) 80px; }
        .article-body h2 { font-family: 'Noto Serif SC', serif; font-size: 24px; font-weight: 700; margin: 48px 0 16px; padding-left: 16px; border-left: 3px solid var(--accent); }
        .article-body h3 { font-size: 18px; font-weight: 600; margin: 32px 0 12px; }
        .article-body p { margin-bottom: 18px; color: var(--ink-2); font-weight: 300; font-size: 16px; }
        .article-body ul, .article-body ol { margin: 0 0 18px 24px; color: var(--ink-2); font-weight: 300; }
        .article-body li { margin-bottom: 8px; }
        .article-body code { font-family: 'JetBrains Mono', monospace; background: var(--bl); padding: 2px 8px; border-radius: 4px; font-size: 14px; color: var(--accent); }
        .article-body pre { background: #1e1e2e; color: #cdd6f4; border-radius: 12px; padding: 24px 28px; margin: 0 0 24px; overflow-x: auto; font-family: 'JetBrains Mono', monospace; font-size: 14px; line-height: 1.7; border: 1px solid #313244; }
        .article-body pre code { background: none; padding: 0; color: inherit; }
        .kw { color: #cba6f7; } .str { color: #a6e3a1; } .cmt { color: #6c7086; font-style: italic; }
        .fn { color: #89b4fa; } .num { color: #fab387; }
        .ui-mock { margin: 32px 0; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); background: var(--surface); box-shadow: 0 8px 32px rgba(0,0,0,0.06); }
        .ui-mock-bar { background: var(--bl); padding: 10px 16px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--border); }
        .ui-mock-dot { width: 10px; height: 10px; border-radius: 50%; }
        .ui-mock-dot.r { background: #ff5f57; } .ui-mock-dot.y { background: #febc2e; } .ui-mock-dot.g { background: #28c840; }
        .ui-mock-title { font-size: 12px; color: var(--ink-4); margin-left: 8px; }
        .ui-mock-body { padding: 24px; }
        .article-figure { margin: 32px 0; text-align: center; }
        .article-figure img { display: block; max-width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--border); box-shadow: 0 8px 32px rgba(0,0,0,0.08); margin: 0 auto; }
        .article-figure figcaption { font-size: 13px; color: var(--ink-4); margin-top: 12px; font-weight: 300; }
        .article-figure figcaption code { font-family: 'JetBrains Mono', monospace; background: var(--bl); padding: 1px 6px; border-radius: 4px; font-size: 12px; color: var(--accent); }
        .callout { background: #fffde0; border-left: 4px solid #b45309; border-radius: 0 12px 12px 0; padding: 16px 20px; margin: 24px 0; font-size: 15px; color: var(--ink-2); }
        .callout strong { color: #b45309; }
        .callout.danger { background: #fee2e2; border-left-color: #dc2626; }
        .callout.danger strong { color: #dc2626; }
        .callout.ok { background: #e8f5e9; border-left-color: #2e7d32; }
        .callout.ok strong { color: #2e7d32; }
        .flow { display: flex; flex-direction: column; gap: 10px; }
        .flow-node { display: flex; align-items: center; gap: 14px; background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; }
        .flow-node-num { width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; flex-shrink: 0; }
        .flow-node-text { font-size: 14px; color: var(--ink-2); flex: 1; }
        .flow-node-code { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--accent); background: var(--accent-l); padding: 2px 8px; border-radius: 4px; }
        .flow-arrow { text-align: center; color: var(--ink-4); font-size: 16px; line-height: 1; }
        .cmp-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px; }
        .cmp-table th { background: var(--bl); color: var(--ink-3); font-weight: 600; text-align: left; padding: 10px 14px; border: 1px solid var(--border); }
        .cmp-table td { padding: 10px 14px; border: 1px solid var(--border); color: var(--ink-2); font-weight: 300; }
        .cmp-table tr:hover td { background: var(--bg); }
        .badge { display: inline-block; white-space: nowrap; font-size: 12px; padding: 2px 10px; border-radius: 100px; font-weight: 500; }
        .badge.bad { background: #fee2e2; color: #dc2626; }
        .badge.good { background: #e8f5e9; color: #2e7d32; }
        footer { border-top: 1px solid var(--border); padding: 28px var(--px); text-align: center; color: var(--ink-4); font-size: 14px; }
        footer a { transition: color 0.2s; }
        footer a:hover { color: var(--accent); }