/* Thành phần dùng chung cho cả 2 giao diện: bài viết, FAQ, demo OEE, chat, cookie, công cụ tính */
:root{--x-soft:var(--stone,var(--concrete,#f3f2ef));--x-dark:#15171a;--surface:#fff}
.container.narrow{max-width:860px}

/* Bài viết */
.article-title{font-size:clamp(28px,3.6vw,44px) !important;text-transform:none !important;line-height:1.15}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
@media(max-width:960px){.article-wrap{grid-template-columns:1fr}.article-side{order:-1}}
.prose{max-width:760px;font-size:17px}
.prose h2{font-size:clamp(22px,2.4vw,28px);margin:44px 0 14px;text-transform:none;scroll-margin-top:100px}
.prose ol{padding-left:22px}.prose ol li{margin:8px 0}
.prose .lead{font-size:19px}
.article-side{position:sticky;top:100px;display:grid;gap:16px}
@media(max-width:960px){.article-side{position:static}}
.side-box{border:1px solid var(--line);padding:20px;background:var(--surface)}
.side-box b{display:block;margin-bottom:8px}
.side-box ol{margin:0;padding-left:18px;font-size:14.5px}.side-box li{margin:6px 0}
.side-box li a{text-decoration:none}
.side-box.dark{background:var(--x-dark);color:#cfd3d9;border-color:var(--x-dark)}
.side-box.dark b{color:#fff}.side-box.dark .small{color:#aab0b8}
.side-box.dark .btn-outline{color:#fff;border-color:#555;background:transparent}
table.data{width:100%;border-collapse:collapse;font-size:15px;margin:10px 0 18px;background:var(--surface)}
table.data th,table.data td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
table.data th{background:var(--x-dark);color:#fff;font-weight:600;font-size:14px}
table.data.check td:nth-child(3){text-align:center;font-size:18px;width:56px}
table.data.check td:nth-child(4){width:30%}
.tw{overflow-x:auto}
details.faq{border-bottom:1px solid var(--line);padding:16px 0}
details.faq summary{cursor:pointer;font-weight:600;font-size:17px;list-style:none;position:relative;padding-right:30px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";position:absolute;right:4px;top:-2px;font-size:22px;color:var(--accent)}
details.faq[open] summary::after{content:"–"}
details.faq p{margin:10px 0 0;color:var(--muted)}
.post{padding:0 !important;overflow:hidden}
.post-img{aspect-ratio:16/9;background:var(--x-soft) center/cover no-repeat}
.post .post-cat{display:block;margin:18px 22px 6px;font-size:12.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.post h3{margin:0 22px 8px;font-size:19px;text-transform:none}
.post .small{margin:0 22px}
.post .more{margin:auto 22px 20px !important;padding-top:14px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.chip{border:1px solid var(--line);background:var(--surface);padding:7px 14px;font:inherit;font-size:14px;cursor:pointer;color:var(--ink)}
.chip.active,.chip:hover{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.svc-img{aspect-ratio:4/3;max-height:380px;background:var(--x-soft) center/cover no-repeat;border:1px solid var(--line)}
.dark-sec{background:var(--x-dark) !important;color:#cfd3d9}
.dark-sec h2,.dark-sec h3{color:#fff}.dark-sec .eyebrow{color:var(--accent)}

/* Demo OEE */
.demo{background:#101215;color:#e8eaed;padding:22px;border:1px solid #2a2e34;font-family:var(--body,system-ui);box-shadow:0 20px 50px rgba(0,0,0,.25)}
.demo small{display:block;font-size:11.5px;letter-spacing:.12em;color:#8a919b}
.demo-top{display:flex;gap:28px;align-items:flex-start;border-bottom:1px solid #2a2e34;padding-bottom:14px;margin-bottom:16px;flex-wrap:wrap}
.demo-top b{font-size:17px;color:#fff}
.demo-live{margin-left:auto;font-size:11px;letter-spacing:.1em;color:#3ecf6e;animation:blink 2s infinite}
@keyframes blink{50%{opacity:.4}}
.demo-kpi{display:grid;grid-template-columns:1.3fr 1fr .8fr .8fr .8fr;gap:10px}
@media(max-width:560px){.demo-kpi{grid-template-columns:1fr 1fr 1fr}}
.demo-kpi b{display:block;font-size:22px;color:#fff;font-variant-numeric:tabular-nums}
.demo-kpi div:nth-child(1) b{font-size:34px}
.demo-kpi div:nth-child(2) b{font-size:34px;color:#3ecf6e}
.demo-kpi span{font-size:12px;color:#8a919b}
.demo-state{margin:16px 0 10px;display:flex;gap:12px;align-items:baseline;flex-wrap:wrap}
.d-state{font-size:15px;padding:2px 10px}
.d-reason{font-size:13px;color:#ffb199}
.demo-bar{display:flex;height:34px;gap:1px;background:#1b1e22;overflow:hidden}
.demo-bar i{flex:1 0 auto;min-width:3px;max-width:8px}
.s-run{background:#2fb35a}.s-slow{background:#e6b422}.s-stop{background:#d9483b}.s-plan{background:#5a616b}
.d-state.s-run{background:#1f6b3a}.d-state.s-slow{background:#7a5f10;color:#fff}.d-state.s-stop{background:#8f241b}.d-state.s-plan{background:#3a3f46}
.demo-legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:#aab0b8;margin-top:10px}
.demo-legend span::before{content:"";display:inline-block;width:10px;height:10px;margin-right:6px;vertical-align:-1px}
.l-run::before{background:#2fb35a}.l-slow::before{background:#e6b422}.l-stop::before{background:#d9483b}.l-plan::before{background:#5a616b}
.demo-note{font-size:12px;color:#7d848e;margin:12px 0 0}
.dt-row{display:grid;grid-template-columns:62px 1fr;gap:10px;align-items:center;margin:7px 0}
.dt-h{font-size:13px;color:#cfd3d9;font-variant-numeric:tabular-nums}
.dt-track{height:28px;background:#1b1e22}
.dt-track i{display:flex;align-items:center;height:100%;width:0;transition:width 1.2s cubic-bezier(.2,.7,.2,1);white-space:nowrap;overflow:visible}
.go .dt-track i{width:var(--w)}
.dt-track em{font-style:normal;font-size:12.5px;letter-spacing:.04em;padding-left:10px;color:#fff;font-weight:600;text-shadow:0 1px 2px rgba(0,0,0,.4)}

/* Công cụ tính */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
@media(max-width:860px){.calc{grid-template-columns:1fr}}
.calc form{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px}
.calc form .field{margin:0}
.calc form .hint{grid-column:1/-1;font-size:13px;color:var(--muted)}
.res{background:var(--x-dark);color:#dfe2e6;padding:26px}
.res-big{font-size:48px;font-weight:700;color:#fff;line-height:1;margin-bottom:14px}
.res-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.res-grid div{font-size:13px;color:#aab0b8}.res-grid b{display:block;font-size:20px;color:#fff;margin-top:2px}
.res p{margin:8px 0}.res .small{color:#9aa1ab}
.res .warn,.warn{color:#ffb199}

/* Cookie */
.consent{position:fixed;left:16px;right:16px;bottom:16px;z-index:200;display:flex;justify-content:center;pointer-events:none}
.consent-in{pointer-events:auto;max-width:760px;width:100%;background:var(--surface);color:var(--ink);border:1px solid var(--line);box-shadow:0 18px 50px rgba(0,0,0,.22);padding:22px 24px}
.consent-in p{font-size:14.5px;color:var(--muted);margin:8px 0 12px}
.consent-opts{display:grid;gap:6px;margin-bottom:12px;font-size:14.5px}
.consent-opts label{font-weight:500;text-transform:none;letter-spacing:0;display:flex;gap:8px;align-items:center;font-size:14.5px}
.consent-opts input{width:auto}
.consent-btns{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
footer.site .legal a{margin-left:16px}

/* Chat */
.chat-fab{position:fixed;right:18px;bottom:76px;z-index:90;background:var(--accent);color:#fff;border:0;padding:12px 18px;font:600 15px var(--body,system-ui);cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.2);display:flex;gap:8px;align-items:center}
.chat-dot{width:9px;height:9px;border-radius:50%;background:#3ecf6e;box-shadow:0 0 0 3px rgba(62,207,110,.3)}
.chat-win{position:fixed;right:18px;bottom:18px;z-index:120;width:min(380px,calc(100vw - 36px));height:min(600px,calc(100vh - 36px));background:var(--surface);border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.28);display:flex;flex-direction:column}
.chat-win[hidden]{display:none}
.chat-head{background:var(--x-dark);color:#fff;padding:14px 16px;display:flex;justify-content:space-between;align-items:center;border-bottom:3px solid var(--accent)}
.chat-head b{display:block;font-size:16px}.chat-head span{font-size:12.5px;color:#aab0b8}
.chat-x{background:none;border:0;color:#fff;font-size:26px;cursor:pointer;line-height:1}
.chat-body{flex:1;overflow:auto;padding:14px;background:var(--x-soft);display:flex;flex-direction:column;gap:8px}
.msg{max-width:88%;padding:10px 12px;font-size:14.5px;line-height:1.5}
.msg.bot{background:var(--surface);border:1px solid var(--line);align-self:flex-start}
.msg.me{background:var(--x-dark);color:#fff;align-self:flex-end}
.msg a{color:inherit}
.chat-quick{display:flex;gap:6px;overflow-x:auto;padding:8px 10px;border-top:1px solid var(--line)}
.chat-quick button{flex:0 0 auto;border:1px solid var(--line);background:var(--surface);padding:6px 10px;font:inherit;font-size:13px;cursor:pointer}
.chat-quick button:hover{border-color:var(--accent)}
.chat-form{display:flex;border-top:1px solid var(--line)}
.chat-form input{border:0;flex:1;padding:12px}
.chat-form button{border:0;background:none;padding:0 14px;font-size:18px;cursor:pointer;color:var(--accent)}
.chat-lead{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:10px;border-top:1px solid var(--line);background:var(--x-soft,var(--stone))}
.chat-lead input{padding:8px;font-size:14px}
.chat-lead button{grid-column:1/-1;justify-content:center}
.chat-note{font-size:12.5px;color:var(--muted);margin:0;padding:6px 10px 10px}
.float-zalo{bottom:18px}
@media print{header.site,.topbar,footer.site,.chat-fab,.chat-win,.float-zalo,.consent,.article-side,.page-head .crumb{display:none !important}.section{padding:12px 0}}
footer.site .social{display:flex;gap:14px;align-items:center;margin-right:auto}
footer.site .social a{margin:0;color:#dfe2e6;display:inline-flex}
footer.site .social svg{width:22px;height:22px}
footer.site .social a:hover{color:var(--accent)}
.consent-opts[hidden]{display:none}
/* Mega menu */
.mg{position:relative;display:flex;align-items:center}
.mg-caret{font-size:11px;margin-left:5px;opacity:.7}
.mg-panel{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);width:min(860px,92vw);display:grid;grid-template-columns:1.9fr 1fr;background:var(--surface);color:var(--ink);border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.18);opacity:0;visibility:hidden;transition:.18s;z-index:80;text-transform:none;letter-spacing:0}
.mg:hover .mg-panel,.mg:focus-within .mg-panel,.mg.open .mg-panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mg-panel::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.mg-items{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:18px}
nav.main .mg-items a,nav.main .mg-side a{all:unset;cursor:pointer;box-sizing:border-box}
nav.main .mg-items a{display:flex !important;gap:12px;padding:12px;align-items:flex-start}
nav.main .mg-items a:hover{background:var(--x-soft)}
.mg-ic{flex:0 0 34px;height:34px;display:grid;place-items:center;border:1px solid var(--line)}
.mg-ic svg{width:19px;height:19px;stroke:var(--accent)}
.mg-items b{display:block;font:600 15px/1.3 var(--body,system-ui);color:var(--ink)}
.mg-items small{display:block;font:400 13px/1.45 var(--body,system-ui);color:var(--muted);margin-top:3px}
.mg-side{background:var(--x-soft);padding:24px 22px;display:flex;flex-direction:column;gap:2px}
.mg-side>b{font:600 15px var(--body,system-ui);margin-bottom:10px;color:var(--ink)}
nav.main .mg-side a{display:block !important;padding:7px 0;font:400 14.5px/1.4 var(--body,system-ui);color:var(--ink)}
nav.main .mg-side a:hover{color:var(--accent-d,#c95a1d)}
nav.main .mg-side a.mg-more{margin-top:auto;padding-top:14px;font-weight:600;color:var(--accent-d,#c95a1d)}
nav.main a::after{pointer-events:none}
@media(max-width:1000px){
  .mg{flex-direction:column;align-items:stretch}
  .mg-panel{position:static;transform:none;width:auto;display:none;box-shadow:none;opacity:1;visibility:visible;grid-template-columns:1fr;border:0;border-left:2px solid var(--accent);margin:0 0 8px}
  .mg:hover .mg-panel,.mg:focus-within .mg-panel{display:none;transform:none}
  .mg.open .mg-panel{display:grid}
  .mg-items{grid-template-columns:1fr;padding:6px}
  .mg-side{padding:14px}
}
/* Thẻ bài viết: tiêu đề đồng nhất cả 2 giao diện */
.post h3{font-family:var(--head);font-size:20px;line-height:1.25;letter-spacing:0}
.post .post-cat{font-family:var(--body,system-ui)}
.post .more{font-size:14px}

/* ===== Dải thông số kỹ thuật dưới hero ===== */
.spec{display:flex;flex-wrap:wrap;gap:6px;margin-top:22px}
.spec span{font:600 12.5px/1 var(--body,system-ui);letter-spacing:.06em;padding:7px 10px;border:1px solid var(--line);background:var(--surface);color:var(--muted)}
.spec span b{color:var(--accent-d,#c95a1d);font-weight:700}
.hero .spec span{background:transparent}

/* ===== Cỡ chữ trên điện thoại ===== */
@media(max-width:600px){
  body{font-size:16px}
  .lead{font-size:17px !important}
  .section{padding:56px 0 !important}
  h1{font-size:32px !important;line-height:1.15}
  .article-title{font-size:28px !important}
  h2{font-size:25px !important}
  h3{font-size:19px}
  .stats{grid-template-columns:repeat(3,1fr);width:100%}
  .stats b{font-size:30px !important}
  .stats span{font-size:12.5px}
  .btn{padding:13px 18px}
  .btn-row .btn{flex:1 1 auto;justify-content:center}
  .res-big{font-size:38px}
  .demo-kpi div:nth-child(-n+2) b{font-size:28px}
  .cta-band{padding:28px !important}
  table.data{font-size:14.5px}
  .chat-fab{bottom:72px;padding:11px 14px;font-size:14px}
  .page-head{padding:44px 0 32px !important}
}

/* ===== Trang Năng lực (mô hình ISA-95, các bước dự án, bảng PLC) ===== */
.isa{display:grid;gap:6px;margin-top:20px}
.isa div{display:grid;grid-template-columns:110px 1fr 150px;gap:14px;align-items:center;padding:14px 16px;border:1px solid var(--line);background:#fff}
.isa b{font-size:15px}.isa span{font-size:14.5px;color:var(--muted)}
.isa em{font-style:normal;font-size:13px;font-weight:600;text-align:right}
.isa .on{border-left:5px solid var(--accent)}.isa .on em{color:var(--accent)}
.isa .link{border-left:5px dashed var(--accent)}.isa .link em{color:var(--muted)}
@media(max-width:640px){.isa div{grid-template-columns:1fr}.isa em{text-align:left}}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:0;border:1px solid var(--line);margin-top:20px;background:#fff}
.steps div{padding:18px;border-right:1px solid var(--line)}
.steps div:last-child{border-right:0}
.steps b{display:block;margin-bottom:6px}
.steps small{display:block;font-size:13.5px;color:var(--muted);line-height:1.5}
.steps i{font-style:normal;font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.08em}
.plc td:first-child{font-weight:600;white-space:nowrap}

/* ===== Thanh thông báo chiến dịch (Tham số chung → Thanh thông báo) ===== */
.announce{background:var(--accent);color:var(--on-accent);font-size:14.5px;font-weight:500;line-height:1.45}
.announce .container{display:flex;gap:6px 14px;justify-content:center;align-items:center;flex-wrap:wrap;padding-top:9px;padding-bottom:9px;text-align:center}
.announce a{color:inherit;font-weight:700;text-decoration:underline;text-underline-offset:3px;white-space:nowrap}