*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0a0a0c;--bg-secondary: #111114;--bg-card: #16161a;--bg-card-hover: #1c1c22;--border: #2a2a33;--text-primary: #e8e8ed;--text-secondary: #90909e;--text-muted: #5c5c6a;--accent-vw: #0050b3;--accent-red: #cc3333;--accent-green: #33aa55;--accent-amber: #d4a017;--accent-cyan: #0099cc;--accent-orange: #e07000;--glow-blue: rgba(0, 80, 179, .15);--glow-red: rgba(204, 51, 51, .12);--max-width: 960px;--nav-height: 56px;--nav-bg: rgba(10, 10, 12, .85)}[data-theme=light]{--bg-primary: #f5f5f7;--bg-secondary: #e8e8ed;--bg-card: #ffffff;--bg-card-hover: #f0f0f5;--border: #d2d2d7;--text-primary: #1d1d1f;--text-secondary: #515154;--text-muted: #86868b;--accent-vw: #0066cc;--accent-red: #cc3333;--accent-green: #2d8a4e;--accent-amber: #b8860b;--accent-cyan: #0077aa;--accent-orange: #cc6600;--glow-blue: rgba(0, 102, 204, .08);--glow-red: rgba(204, 51, 51, .06);--nav-bg: rgba(245, 245, 247, 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a{color:var(--text-secondary);text-decoration:none;font-size:14px;transition:color .2s;padding:6px 12px;border-radius:6px}nav a:hover{color:var(--text-primary);background:var(--bg-card)}nav .logo{font-weight:700;font-size:16px;color:var(--text-primary);display:flex;align-items:center;gap:8px}nav .logo span{color:var(--accent-cyan)}.theme-btn{background:none;border:1px solid var(--border);border-radius:8px;padding:4px 10px;font-size:16px;cursor:pointer;transition:all 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pre{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:16px;overflow-x:auto;margin:1em 0}.article-content pre code{background:none;padding:0;color:inherit}.article-content blockquote{border-left:3px solid var(--accent-cyan);padding:8px 16px;margin:1em 0;background:#0099cc0d;border-radius:0 8px 8px 0;color:var(--text-secondary)}.article-content img{max-width:100%;border-radius:8px;margin:1em 0}.article-content ul,.article-content ol{padding-left:1.5em;margin-bottom:1em;color:var(--text-secondary)}.article-content li{margin-bottom:.3em}.article-content table{width:100%;border-collapse:collapse;margin:1em 0;font-size:.9rem}.article-content th,.article-content td{border:1px solid var(--border);padding:8px 12px;text-align:left}.article-content th{background:var(--bg-card);color:var(--text-primary);font-weight:600}.article-header{margin-bottom:2em}.article-header h1{margin-bottom:.3em}.article-header .meta{color:var(--text-muted);font-size:.85rem;display:flex;gap:16px;flex-wrap:wrap}.share-buttons{display:flex;gap:8px;margin-top:2em;padding-top:1.5em;border-top:1px solid var(--border)}.share-btn{display:inline-flex;align-items:center;gap:4px;padding:6px 14px;border-radius:6px;font-size:13px;border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;transition:all .2s}.share-btn:hover{border-color:var(--accent-cyan);color:var(--accent-cyan)}.like-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 28px;border-radius:24px;font-size:15px;border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;transition:all .3s}.like-btn:hover{border-color:var(--accent-red);color:var(--accent-red)}.like-btn.liked{border-color:var(--accent-red);background:#cc333314;color:var(--accent-red)}.like-btn #like-icon{font-size:20px}.article-nav{display:flex;justify-content:space-between;margin-top:2em;padding-top:1em;border-top:1px solid var(--border)}.article-nav a{font-size:.9rem;max-width:45%}.category-bar{display:flex;flex-wrap:wrap;gap:8px;margin:1em 0}.category-btn{padding:6px 14px;border-radius:20px;font-size:13px;border:1px solid var(--border);background:transparent;color:var(--text-secondary);cursor:pointer;transition:all .2s}.category-btn:hover{border-color:var(--accent-cyan);color:var(--accent-cyan)}.category-btn.active{background:var(--accent-vw);border-color:var(--accent-vw);color:#fff}.section-title{font-size:1.6rem;font-weight:700;margin-bottom:1em;letter-spacing:-.02em}.section-subtitle{color:var(--text-muted);font-size:1rem;margin-bottom:1.5em}.placeholder-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600;background:#d4a0171f;color:var(--accent-amber);border:1px solid 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