/* PCTech AI SEO — mục Bài viết. Mọi quy tắc nằm trong .pcseo-blog để không ảnh hưởng theme. */
.pcseo-blog{--pcseo-accent:#0b5ed7;--pcseo-text:#1f2937;--pcseo-muted:#6b7280;--pcseo-line:#e5e7eb;--pcseo-soft:#f6f8fb;color:var(--pcseo-text);padding:24px 0 56px;font-size:17px;line-height:1.7}
.pcseo-blog *{box-sizing:border-box}
.pcseo-blog a{color:var(--pcseo-accent)}
.pcseo-wrap{max-width:1140px;margin:0 auto;padding:0 16px}
.pcseo-single .pcseo-wrap{max-width:820px}
.pcseo-preview-note{background:#fff7e6;border:1px solid #f5c26b;color:#7a4b00;border-radius:8px;padding:8px 12px;font-size:14px;margin-bottom:16px}
.pcseo-bc{font-size:14px;color:var(--pcseo-muted);margin:0 0 16px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.pcseo-bc a{color:var(--pcseo-muted);text-decoration:none}
.pcseo-bc a:hover{color:var(--pcseo-accent);text-decoration:underline}
.pcseo-bc span:last-child{color:var(--pcseo-text)}
.pcseo-title{font-size:clamp(26px,4vw,38px);line-height:1.25;margin:8px 0 12px;font-weight:700;color:var(--pcseo-text)}
.pcseo-lead{font-size:18px;color:#374151;margin:0 0 12px}
.pcseo-lead p{margin:0}
.pcseo-meta{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:14px;color:var(--pcseo-muted);margin:0}
.pcseo-chip{display:inline-block;padding:4px 12px;border-radius:999px;background:var(--pcseo-soft);border:1px solid var(--pcseo-line);color:var(--pcseo-text)!important;font-size:14px;text-decoration:none;line-height:1.5}
.pcseo-chip:hover,.pcseo-chip.is-active{background:var(--pcseo-accent);border-color:var(--pcseo-accent);color:#fff!important}
.pcseo-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
/* Danh sách */
.pcseo-archive-head{margin-bottom:24px}
.pcseo-search{display:flex;gap:8px;max-width:520px;margin-top:12px}
.pcseo-search input{flex:1;min-width:0;padding:10px 14px;border:1px solid var(--pcseo-line);border-radius:8px;font-size:16px}
.pcseo-search button,.pcseo-btn{background:var(--pcseo-accent);color:#fff!important;border:0;border-radius:8px;padding:10px 18px;font-size:16px;cursor:pointer;text-decoration:none;display:inline-block;font-weight:600}
.pcseo-search button:hover,.pcseo-btn:hover{filter:brightness(.92)}
.pcseo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.pcseo-grid-sm{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.pcseo-card{background:#fff;border:1px solid var(--pcseo-line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:box-shadow .2s,transform .2s}
.pcseo-card:hover{box-shadow:0 8px 24px rgba(15,23,42,.08);transform:translateY(-2px)}
.pcseo-thumb,.pcseo-blog .pcseo-card,.pcseo-blog .pcseo-thumb *{text-decoration:none!important}
.pcseo-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--pcseo-soft)}
.pcseo-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.pcseo-thumb-ph{width:100%;height:100%;display:flex;flex-direction:column;justify-content:flex-end;gap:6px;padding:16px;background:linear-gradient(135deg,hsl(var(--h) 70% 42%),hsl(calc(var(--h) + 40) 75% 30%));color:#fff}
.pcseo-thumb-ph span{font-size:12px;text-transform:uppercase;letter-spacing:.06em;opacity:.85}
.pcseo-thumb-ph strong{font-size:22px;line-height:1.35;font-weight:700;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.pcseo-card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.pcseo-card-cat{font-size:13px;color:var(--pcseo-accent);font-weight:600}
.pcseo-card h2,.pcseo-card h3{font-size:19px;line-height:1.35;margin:0;font-weight:700}
.pcseo-card h3{font-size:16px}
.pcseo-card h2 a{color:var(--pcseo-text);text-decoration:none}
.pcseo-card h2 a:hover{color:var(--pcseo-accent)}
.pcseo-card p{margin:0;color:#4b5563;font-size:15px;line-height:1.6}
.pcseo-card-meta{margin-top:auto;padding-top:6px;font-size:13px;color:var(--pcseo-muted)}
.pcseo-pages{margin-top:32px;display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.pcseo-pages .page-numbers{padding:8px 14px;border:1px solid var(--pcseo-line);border-radius:8px;text-decoration:none;color:var(--pcseo-text)}
.pcseo-pages .current{background:var(--pcseo-accent);border-color:var(--pcseo-accent);color:#fff}
.pcseo-empty{padding:32px;text-align:center;background:var(--pcseo-soft);border-radius:12px;color:var(--pcseo-muted)}
/* Bài viết */
.pcseo-article-head{margin-bottom:20px}
.pcseo-hero{margin:0 0 24px;border-radius:12px;overflow:hidden}
.pcseo-hero img{width:100%;height:auto;display:block}
.pcseo-toc{background:var(--pcseo-soft);border:1px solid var(--pcseo-line);border-radius:10px;padding:12px 18px;margin:0 0 28px}
.pcseo-toc summary{font-weight:700;cursor:pointer}
.pcseo-toc ol{margin:10px 0 0;padding-left:22px}
.pcseo-toc li{margin:4px 0;font-size:16px}
.pcseo-toc a{text-decoration:none}
.pcseo-toc a:hover{text-decoration:underline}
.pcseo-content h2{font-size:clamp(22px,3vw,27px);line-height:1.3;margin:36px 0 12px;scroll-margin-top:90px}
.pcseo-content h3{font-size:20px;line-height:1.35;margin:24px 0 8px}
.pcseo-content p{margin:0 0 var(--pcseo-gap,1.1em)}
.pcseo-content>p,.pcseo-content>div>p:not([class]),.pcseo-content blockquote p{text-indent:var(--pcseo-indent,1.5em)}
.pcseo-content>p.pcseo-answer{text-indent:0}
.pcseo-content ul,.pcseo-content ol{margin:0 0 16px;padding-left:24px}
.pcseo-content li{margin:4px 0}
.pcseo-table{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 var(--pcseo-gap,1.1em);border:1px solid var(--pcseo-line);border-radius:10px}
.pcseo-content table{width:100%;border-collapse:collapse;margin:0;font-size:15px;min-width:460px}
.pcseo-content th,.pcseo-content td{border:1px solid var(--pcseo-line);padding:8px 12px;text-align:left;vertical-align:top}
.pcseo-content th{background:var(--pcseo-soft)}
.pcseo-content img{max-width:100%;height:auto}
.pcseo-content a{text-decoration:underline;text-underline-offset:2px}
.pcseo-cta{margin:32px 0 0;padding:20px 22px;border-radius:12px;background:linear-gradient(135deg,var(--pcseo-soft),#eef4ff);border:1px solid var(--pcseo-line);display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between}
.pcseo-cta p{margin:0;font-weight:600;flex:1 1 260px}
.pcseo-section{margin-top:40px}
.pcseo-h{font-size:22px;margin:0 0 14px}
.pcseo-res{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}
.pcseo-res a{display:block;padding:12px 14px;border:1px solid var(--pcseo-line);border-radius:10px;text-decoration:none;color:var(--pcseo-text);font-size:15px;line-height:1.45;height:100%}
.pcseo-res a:hover{border-color:var(--pcseo-accent)}
.pcseo-res span{display:block;font-size:12px;color:var(--pcseo-accent);font-weight:600;margin-bottom:2px}
@media (max-width:600px){.pcseo-blog{font-size:16px;padding-top:16px}.pcseo-grid{grid-template-columns:1fr;gap:16px}.pcseo-grid-sm{grid-template-columns:1fr 1fr}.pcseo-search{max-width:none}}
.pcseo-content li{line-height:1.65}
/* Thành phần trình bày (v0.7.0) */
.pcseo-content .pcseo-answer{background:#f3f7ff;border-left:4px solid var(--pcseo-accent);padding:12px 16px;border-radius:0 10px 10px 0;font-size:1.02em}
.pcseo-content .pcseo-answer strong{color:#0f2f6b}
.pcseo-summary,.pcseo-callout{border-radius:12px;padding:14px 18px;margin:0 0 var(--pcseo-gap,1.1em) 0}
.pcseo-summary{background:linear-gradient(135deg,#eef4ff,#f8fbff);border:1px solid #cfe0ff}
.pcseo-summary ul{margin:0;padding-left:22px}
.pcseo-summary li{margin:6px 0}
.pcseo-box-title{font-weight:700;margin:0 0 6px!important;text-indent:0!important;font-size:1.02em}
.pcseo-callout p{text-indent:0!important;margin:0 0 .5em}
.pcseo-callout p:last-child{margin-bottom:0}
.pcseo-callout{border:1px solid var(--pcseo-line);border-left-width:5px;background:#fafafa}
.pcseo-note{background:#fff8e6;border-color:#f3cf7a;border-left-color:#e0a100}
.pcseo-tip{background:#effaf3;border-color:#b9e6c9;border-left-color:#1f9d55}
.pcseo-important{background:#fff1f1;border-color:#f5c2c2;border-left-color:#d92d2d}
.pcseo-example{background:#f5f3ff;border-color:#d9d2fb;border-left-color:#6d4ee6}
.pcseo-legal{background:#f4f6f8;border-color:#d5dbe1;border-left-color:#475569}
.pcseo-content ul.pcseo-check{list-style:none;padding-left:4px}
.pcseo-content ul.pcseo-check li{position:relative;padding-left:30px}
.pcseo-content ul.pcseo-check li::before{content:"✅";position:absolute;left:0;top:0}
.pcseo-content ol.pcseo-steps{list-style:none;counter-reset:pcseo-step;padding-left:0}
.pcseo-content ol.pcseo-steps li{counter-increment:pcseo-step;position:relative;padding:2px 0 10px 44px;margin:0}
.pcseo-content ol.pcseo-steps li::before{content:counter(pcseo-step);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--pcseo-accent);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.pcseo-content blockquote{margin:0 0 var(--pcseo-gap,1.1em);padding:12px 18px;border-left:4px solid #94a3b8;background:#f8fafc;color:#334155;font-style:italic}
.pcseo-content blockquote p:last-child{margin-bottom:0}
.pcseo-content dl{margin:0 0 var(--pcseo-gap,1.1em)}
.pcseo-content dt{font-weight:700;margin-top:8px}
.pcseo-content dd{margin:2px 0 8px 18px;color:#374151}
.pcseo-content thead th{background:var(--pcseo-accent);color:#fff;border-color:var(--pcseo-accent)}
.pcseo-content tbody tr:nth-child(even) td{background:#f9fbfd}
.pcseo-content strong{color:#111827}
.pcseo-content em{color:#374151}
.pcseo-sources{margin-top:28px}
.pcseo-sources ul{margin:0;padding-left:22px}
.pcseo-sources li{margin:4px 0;font-size:15px}
.pcseo-author{display:flex;gap:14px;align-items:center;margin:28px 0 0;padding:16px 18px;border:1px solid var(--pcseo-line);border-radius:12px;background:#fff}
.pcseo-author-avatar{flex:0 0 52px;height:52px;border-radius:50%;background:var(--pcseo-accent);color:#fff;font-weight:700;font-size:22px;display:flex;align-items:center;justify-content:center}
.pcseo-author-name{margin:0;font-weight:700}
.pcseo-author-desc{margin:2px 0 0;font-size:14px;color:var(--pcseo-muted)}
/* v0.8.1 — Số liệu độc quyền & hộp Thử sức (cũng dùng ngoài .pcseo-blog) */
.pcseo-data{border:1px solid #bfdbfe;border-left:5px solid #2563eb;background:linear-gradient(135deg,#eff6ff,#f8fbff);border-radius:12px;padding:14px 18px;margin:0 0 1.1em}
.pcseo-data p{text-indent:0!important;margin:0 0 .4em}
.pcseo-data p:last-child{margin-bottom:0}
.pcseo-quiz{border:2px solid var(--pcseo-accent,#0b5ed7);border-radius:14px;padding:16px 18px;margin:8px 0 1.4em;background:#fff;box-shadow:0 6px 18px rgba(15,23,42,.06)}
.pcseo-quiz p{text-indent:0!important}
.pcseo-quiz .pcseo-box-title{font-size:1.1em;font-weight:700;margin:0 0 4px}
.pcseo-quiz-lead{color:#6b7280;font-size:14px;margin:0 0 12px}
.pcseo-q{padding:12px 0;border-top:1px dashed #e5e7eb}
.pcseo-q:first-of-type{border-top:0}
.pcseo-q-text{margin:0 0 8px;font-size:16px;line-height:1.55}
.pcseo-q-opts{list-style:none!important;margin:0!important;padding:0!important;display:grid;gap:8px}
.pcseo-q-opts li{margin:0!important;padding:0!important}
.pcseo-q-opts li::before{content:none!important}
.pcseo-q-opts button{width:100%;text-align:left;background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:10px 12px;font:inherit;font-size:15px;line-height:1.45;color:#1f2937;cursor:pointer;display:flex;gap:10px;align-items:flex-start;transition:background .15s,border-color .15s}
.pcseo-q-opts button:hover:not(:disabled){border-color:var(--pcseo-accent,#0b5ed7);background:#eef4ff}
.pcseo-q-opts button span{flex:0 0 26px;height:26px;border-radius:50%;background:#e2e8f0;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px}
.pcseo-q-opts button:disabled{cursor:default;opacity:.85}
.pcseo-q-opts button.is-right{background:#ecfdf3;border-color:#22c55e;opacity:1}
.pcseo-q-opts button.is-right span{background:#22c55e;color:#fff}
.pcseo-q-opts button.is-wrong{background:#fef2f2;border-color:#ef4444;opacity:1}
.pcseo-q-opts button.is-wrong span{background:#ef4444;color:#fff}
.pcseo-q-result{margin-top:10px;padding:10px 12px;background:#f8fafc;border-radius:10px;font-size:15px}
.pcseo-q-result p{margin:0 0 6px}
.pcseo-q-result p:last-child{margin:0}
.pcseo-q-verdict{font-weight:700}
.pcseo-q-stat{color:#1d4ed8}
.pcseo-quiz-cta{margin:12px 0 0;text-align:center}
.pcseo-quiz .pcseo-btn{background:var(--pcseo-accent,#0b5ed7);color:#fff!important;border-radius:8px;padding:10px 18px;text-decoration:none!important;display:inline-block;font-weight:600}
/* v0.8.4 — Câu hỏi thường gặp: câu hỏi in đậm nổi bật (cũng áp dụng với theme riêng) */
.pcseo-faq .pcseo-faq-q{font-weight:700!important;color:#0f172a;font-size:1.08em;line-height:1.45;margin:1.2em 0 .4em;padding-left:12px;border-left:4px solid var(--pcseo-accent,#0b5ed7)}
.pcseo-faq .pcseo-faq-q strong,.pcseo-faq .pcseo-faq-q b{font-weight:inherit}
.pcseo-faq .pcseo-faq-q+p{margin-top:0}