:root{
  --navy:#0b2a4a; --navy2:#12385f; --blue:#1566e0; --blue-d:#0f52b8; --blue-l:#e8f1fd;
  --bg:#eef3fa; --card:#fff; --line:#d9e3f1; --ink:#10233a; --muted:#5b6f87;
  --ok:#157a4a; --ok-bg:#e6f6ee; --warn:#9a5b00; --warn-bg:#fff4dc; --bad:#b3261e; --bad-bg:#fdecea;
  --r:12px; --shadow:0 1px 2px rgba(11,42,74,.06),0 4px 14px rgba(11,42,74,.06);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--bg:#0c1624;--card:#13233a;--line:#233a58;--ink:#e8eef7;--muted:#9db0c8;--blue-l:#17304f;--ok-bg:#0f2f22;--warn-bg:#35280c;--bad-bg:#3a1613;--shadow:none}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.55 "Be Vietnam Pro","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--blue);text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3{line-height:1.25;margin:0}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}
.sr{position:absolute;left:-9999px}

/* top bar */
.top{background:var(--navy);color:#fff;position:sticky;top:0;z-index:30}
.top .wrap{display:flex;align-items:center;gap:20px;height:60px}
.brand{font-weight:700;font-size:20px;color:#fff;white-space:nowrap}
.brand b{color:#6db1ff}
.nav{display:flex;gap:4px;height:100%}
.nav a{color:#c9d8ec;display:flex;align-items:center;padding:0 14px;border-bottom:3px solid transparent;font-weight:600}
.nav a.on{color:#fff;border-color:#2f86ff}
.top .sp{flex:1}
.top .minisearch{display:none;flex:1;max-width:420px}
.top .minisearch input{width:100%;border:0;border-radius:8px;padding:9px 12px;font:inherit}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:9px;padding:9px 16px;border:1px solid var(--line);background:var(--card);color:var(--ink);font-weight:600}
.btn:hover{border-color:var(--blue)}
.btn.pri{background:var(--blue);border-color:var(--blue);color:#fff}.btn.pri:hover{background:var(--blue-d)}
.btn.ghost-w{background:transparent;color:#fff;border-color:#8ea6c4}
.btn.sm{padding:5px 10px;font-size:14px}
.btn.danger{color:var(--bad)}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* hero */
.hero{background:linear-gradient(135deg,#e6f0fc,#f4f8fe 60%,#eaf2fd);padding:40px 0 28px;border-bottom:1px solid var(--line)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .hero{background:linear-gradient(135deg,#10233b,#0e1d31)}}
.hero h1{font-size:clamp(28px,4.5vw,42px);color:var(--navy)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .hero h1{color:#fff}}
.hero p{color:var(--muted);font-size:clamp(16px,2vw,20px);margin:8px 0 22px}
.searchbox{display:flex;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:var(--shadow);max-width:880px}
.searchbox .ic{align-self:center;padding:0 6px 0 10px;color:var(--muted)}
.searchbox input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font:inherit;font-size:17px;padding:10px 4px}
.searchbox .clear{border:0;background:transparent;color:var(--muted);font-size:20px;padding:0 10px}
.filters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:16px}
.chip{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:9px;padding:8px 16px;font-weight:600}
.chip.on{background:var(--blue);border-color:var(--blue);color:#fff}
select,.in{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:9px;padding:9px 12px;width:100%}
.filters select{width:auto;min-width:140px;font-weight:600}
textarea.in{resize:vertical;min-height:70px}
.in:focus,select:focus,.searchbox:focus-within{outline:2px solid var(--blue);outline-offset:1px}

/* cards */
.sec-h{display:flex;align-items:baseline;gap:12px;margin:28px 0 14px;flex-wrap:wrap}
.sec-h h2{font-size:26px}.sec-h span{color:var(--muted)}
.sec-h .reset{margin-left:auto;background:none;border:0;color:var(--blue);font-weight:600}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:16px;margin-bottom:40px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;flex-direction:column;gap:10px;box-shadow:var(--shadow);transition:.15s}
.card:hover{border-color:var(--blue);transform:translateY(-2px)}
.card .hd{display:flex;gap:14px}
.card .ico{flex:none;width:52px;height:52px;border-radius:12px;background:var(--blue-l);color:var(--blue);display:grid;place-items:center}
.card h3{font-size:18px}
.tag{display:inline-block;background:var(--blue-l);color:var(--blue);font-weight:600;font-size:13px;border-radius:6px;padding:2px 8px;margin:4px 4px 0 0}
.card p{margin:0;color:var(--muted);font-size:15px;flex:1}
.card .go{border-top:1px solid var(--line);padding-top:10px;font-weight:600;display:flex;justify-content:space-between}
.card.pending{opacity:.75;background:var(--bg)}
.badge{font-size:12px;font-weight:700;border-radius:6px;padding:2px 8px;white-space:nowrap}
.b-published{background:var(--ok-bg);color:var(--ok)}.b-draft{background:var(--blue-l);color:var(--blue)}
.b-pending{background:var(--warn-bg);color:var(--warn)}.b-needs_update{background:var(--bad-bg);color:var(--bad)}
.empty{background:var(--card);border:1px dashed var(--line);border-radius:var(--r);padding:36px 20px;text-align:center;color:var(--muted)}
.empty h3{color:var(--ink);margin-bottom:6px}

/* article */
.crumb{font-size:14px;color:var(--muted);margin:16px 0;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.crumb a{color:var(--muted)}.crumb b{color:var(--blue);font-weight:600}
.layout{display:grid;grid-template-columns:210px minmax(0,1fr) 320px;gap:20px;align-items:start;margin-bottom:60px}
.toc{position:sticky;top:76px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px}
.toc h4{margin:0 0 8px;font-size:16px}
.toc a{display:block;color:var(--ink);padding:8px 10px;border-radius:8px;border-left:3px solid transparent;font-size:15px}
.toc a:hover{background:var(--blue-l)}.toc a.on{background:var(--blue-l);color:var(--blue);font-weight:600;border-color:var(--blue)}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:16px;box-shadow:var(--shadow);scroll-margin-top:76px}
.panel h2{font-size:22px;margin-bottom:6px}
.panel .sub{color:var(--muted);margin:0 0 14px}
.title-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.title-row h1{font-size:clamp(26px,4vw,34px);color:var(--navy)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .title-row h1{color:#fff}}
.meta{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 10px}
.meta .tag{background:var(--blue-l)}.meta .who{background:var(--bg);color:var(--muted);border:1px solid var(--line)}
.lead{font-size:17px;margin:6px 0 16px}
.cause{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:var(--card);color:var(--ink);border:1.5px solid var(--line);border-radius:10px;padding:13px 14px;margin-bottom:8px;font-weight:600}
.cause:hover{border-color:var(--blue)}
.cause.on{border-color:var(--blue);background:var(--blue-l)}
.cause .dot{flex:none;width:20px;height:20px;border-radius:50%;border:2px solid var(--muted);display:grid;place-items:center}
.cause.on .dot{border-color:var(--blue)}.cause.on .dot::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--blue)}
.cause .fr{margin-left:auto;font-size:12px;font-weight:700;color:var(--muted);background:var(--bg);border-radius:6px;padding:2px 8px;white-space:nowrap}
.cause.unk{border-style:dashed}
.why{background:var(--bg);border-left:4px solid var(--blue);border-radius:8px;padding:12px 14px;margin:0 0 16px}
.why p{margin:0 0 6px}.why p:last-child{margin:0}
.note{border-radius:8px;padding:10px 14px;margin:10px 0;background:var(--blue-l)}
.note.warn{background:var(--warn-bg);color:var(--warn)}
.note.ok{background:var(--ok-bg);color:var(--ok)}
.note b.k{margin-right:4px}
ol.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.stp{display:grid;grid-template-columns:34px 1fr;gap:12px;margin:0 0 18px}
.stp .n{width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;display:grid;place-items:center;margin-top:1px}
.stp .tx{margin:3px 0 8px}
.cond{margin:0 0 14px 46px;padding:8px 12px;border-left:3px solid var(--muted);color:var(--ink);font-weight:600;background:var(--bg);border-radius:0 8px 8px 0}
.indent{margin-left:46px}
.inline-ic{height:1.15em;vertical-align:-3px;margin:0 3px;border:1px solid var(--line);border-radius:3px;background:#fff}
.shots{display:grid;gap:10px}
.shot{position:relative;display:block;width:100%;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;padding:0;cursor:zoom-in}
.shot img{display:block;width:100%;height:auto}
.shot .z{position:absolute;right:8px;bottom:8px;background:rgba(11,42,74,.85);color:#fff;font-size:12px;border-radius:6px;padding:3px 8px}
.cap{font-size:13px;color:var(--muted);margin:4px 0 0}
.alt{border:1.5px dashed var(--blue);border-radius:12px;padding:14px;margin:6px 0 18px;background:color-mix(in srgb,var(--blue-l) 40%,transparent)}
.alt .alt-h{font-weight:700;color:var(--blue);margin-bottom:10px;display:flex;gap:8px;align-items:center}
.alt .opt{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px;margin-bottom:10px}
.alt .opt:last-child{margin-bottom:0}
.alt .or{text-align:center;color:var(--muted);font-weight:700;margin:8px 0;letter-spacing:.1em}
.alt .opt>h4{margin:0 0 12px;font-size:17px}
.alt .opt .stp .n{background:var(--navy2)}
.outc{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:6px 0 16px}
.outc .oh{background:var(--bg);padding:8px 14px;font-weight:700}
.orow{padding:10px 14px;border-top:1px solid var(--line)}
.orow>.w{font-weight:700}.orow>.w::after{content:" ⇒ ";color:var(--blue)}
.orow .sub-o{margin:10px 0 0 10px;border-left:2px solid var(--line);padding-left:10px}
.res{display:flex;gap:12px;align-items:flex-start}
.res .ic{flex:none;width:34px;height:34px;border-radius:50%;background:var(--ok-bg);color:var(--ok);display:grid;place-items:center;font-weight:700}
.more{display:grid;gap:14px}
.fb{display:flex;gap:10px;align-items:center;flex-wrap:wrap;background:var(--bg);border-radius:10px;padding:12px 14px;margin-top:14px}
.fb .q{flex:1;font-weight:600;min-width:200px}
.guide-q{border:1px solid var(--line);border-radius:10px;padding:14px;margin-bottom:10px;background:var(--card)}
.guide-q.cur{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-l)}
.guide-q.done{opacity:.6}
.guide-q .row{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}

/* right rail */
.rail .panel{padding:16px}
.vwrap{position:relative;padding-top:56.25%;background:#000;border-radius:10px;overflow:hidden}
.vwrap iframe,.vwrap video{position:absolute;inset:0;width:100%;height:100%;border:0}
.vitem{margin-bottom:14px}.vitem h4{margin:8px 0 2px;font-size:15px}.vitem p{margin:0;color:var(--muted);font-size:14px}
.support{display:flex;gap:12px;align-items:center;margin-bottom:10px}
.support .ic{width:46px;height:46px;border-radius:12px;background:var(--blue-l);display:grid;place-items:center;color:var(--blue);font-size:22px}
.support ul{margin:6px 0 0;padding-left:20px}

/* videos page */
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-bottom:40px}

/* lightbox */
.lb{position:fixed;inset:0;background:rgba(5,15,30,.92);z-index:100;display:none;flex-direction:column;align-items:center;justify-content:center;padding:16px}
.lb.on{display:flex}
.lb img{max-width:100%;max-height:calc(100vh - 90px);object-fit:contain;background:#fff;border-radius:6px;transition:transform .15s}
.lb .bar{display:flex;gap:8px;margin-top:12px}
.lb .bar button{background:#fff;border:0;border-radius:8px;padding:8px 16px;font-weight:700}
.lb .sc{overflow:auto;max-width:100%;max-height:calc(100vh - 90px)}

/* demo banner */
.demo{background:var(--warn-bg);color:var(--warn);font-size:14px;padding:8px 0;border-bottom:1px solid var(--line)}

/* admin */
.admin{display:grid;grid-template-columns:230px minmax(0,1fr);min-height:calc(100vh - 60px)}
.side{background:var(--navy);color:#c9d8ec;padding:18px 12px}
.side .brand{display:block;padding:6px 10px 16px}
.side a{display:flex;gap:10px;color:#c9d8ec;padding:10px 12px;border-radius:9px;font-weight:600;margin-bottom:4px}
.side a.on,.side a:hover{background:var(--navy2);color:#fff}
.amain{padding:20px;min-width:0}
.ahead{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.ahead h1{font-size:28px;margin-right:auto}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.tabs button{background:none;border:0;border-bottom:3px solid transparent;padding:10px 14px;font-weight:600;color:var(--muted);white-space:nowrap}
.tabs button.on{color:var(--blue);border-color:var(--blue)}
.f{margin-bottom:14px}.f label{display:block;font-weight:600;margin-bottom:4px}.f small{display:block;color:var(--muted);margin-top:3px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.edcard{border:1px solid var(--line);border-radius:10px;padding:12px;margin-bottom:10px;background:var(--card)}
.edcard.nested{background:var(--bg)}
.edhead{display:flex;gap:8px;align-items:center;margin-bottom:8px;flex-wrap:wrap}
.edhead select{width:auto}
.edhead .sp{flex:1}
.thumbs{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.thumb{width:130px;border:1px solid var(--line);border-radius:8px;padding:4px;background:#fff}
.thumb img{width:100%;height:80px;object-fit:contain}
.thumb .tb{display:flex;gap:2px;justify-content:center;flex-wrap:wrap}
.thumb .tb button{border:0;background:var(--blue-l);color:var(--blue);border-radius:5px;font-size:12px;padding:2px 5px}
table.t{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:10px;overflow:hidden}
table.t th,table.t td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.t th{background:var(--bg);font-size:14px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--navy);color:#fff;padding:10px 18px;border-radius:10px;z-index:200;box-shadow:0 6px 20px rgba(0,0,0,.3)}

@media (max-width:1020px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .toc{position:static;display:flex;gap:6px;overflow-x:auto;padding:8px;white-space:nowrap}
  .toc h4{display:none}.toc a{border:1px solid var(--line);border-left-width:1px}
  .rail{order:3}
}
@media (max-width:720px){
  .nav a{padding:0 8px;font-size:14px}.brand{font-size:17px}
  .top .wrap{gap:8px}.top .btn.ghost-w span{display:none}
  .admin{grid-template-columns:1fr}.side{display:flex;overflow-x:auto;gap:4px;padding:8px}
  .side .brand{display:none}.side a{white-space:nowrap;margin:0}
  .two{grid-template-columns:1fr}
  .stp{grid-template-columns:28px 1fr;gap:10px}.stp .n{width:26px;height:26px;font-size:14px}
  .cond,.indent{margin-left:0}
  .searchbox .btn span{display:none}
}
@media (max-width:720px){
  .top .minisearch{display:none!important}
  .nav a{white-space:nowrap}
  .top .wrap{height:56px}
}
@media (max-width:720px){
  .top .wrap{gap:6px;padding:0 10px}
  .brand{font-size:15px}
  .nav a{padding:0 7px;font-size:13px}
  .top .btn.ghost-w{padding:8px 10px}
}
:root[data-theme="dark"]{--bg:#0c1624;--card:#13233a;--line:#233a58;--ink:#e8eef7;--muted:#9db0c8;--blue-l:#17304f;--ok-bg:#0f2f22;--warn-bg:#35280c;--bad-bg:#3a1613;--shadow:none;color-scheme:dark}
:root[data-theme="dark"] .hero{background:linear-gradient(135deg,#10233b,#0e1d31)}
:root[data-theme="dark"] .hero h1,:root[data-theme="dark"] .title-row h1{color:#fff}
.stp.sub{margin-left:46px}.stp.sub .n{background:var(--muted);width:22px;height:22px;font-size:14px;margin-top:3px}
.why>b{display:block;margin-bottom:4px;color:var(--blue)}
@media (max-width:720px){.stp.sub{margin-left:0}}

/* ===== Giao diện v2: header trắng, hero căn giữa, thanh lọc riêng, thẻ có icon màu ===== */
:root{--tone-blue:#1566e0;--tone-green:#14915f;--tone-violet:#6b4fd8;--tone-amber:#c26a00}
.top{background:var(--card);color:var(--ink);border-bottom:1px solid var(--line)}
.top .wrap{height:72px;gap:18px}
.brand{color:var(--ink);display:flex;align-items:center;gap:12px}
.brand .logo{width:46px;height:46px;border-radius:12px;background:linear-gradient(145deg,#2f86ff,#1253c9);color:#fff;display:grid;place-items:center;box-shadow:0 4px 10px rgba(21,102,224,.3)}
.brand .bt{display:flex;flex-direction:column;line-height:1.15}
.brand .bn{font-size:22px;font-weight:500}.brand .bn b{color:var(--blue);font-weight:700}
.brand .bs{font-size:10.5px;letter-spacing:.2em;color:var(--muted);font-weight:600;margin-top:4px}
.nav{margin-left:14px}
.nav a{color:var(--muted);gap:8px;border-bottom-width:3px}
.nav a:hover{color:var(--ink)}
.nav a.on{color:var(--blue);border-color:var(--blue)}
.top .minisearch input{border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.iconbtn{width:40px;height:40px;border-radius:50%;border:0;background:transparent;color:var(--muted);display:grid;place-items:center}
.iconbtn:hover{background:var(--blue-l);color:var(--blue)}
.gearbtn{padding:8px 14px;font-size:14px}
.avatar{width:42px;height:42px;border-radius:50%;border:0;background:var(--blue-l);color:var(--blue);display:grid;place-items:center}
.avatar:hover{box-shadow:0 0 0 3px var(--blue-l)}
.pop{position:absolute;z-index:60;width:320px;max-width:calc(100vw - 16px);background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px rgba(11,42,74,.2);padding:14px 16px;font-size:14px}
.pop ul{margin:8px 0 0;padding-left:18px}.pop li{margin-bottom:6px}.pop p{margin:6px 0 0;color:var(--muted)}

.hero{text-align:center;padding:56px 0 40px;background:radial-gradient(1200px 380px at 50% 0,#dce9fb,transparent 70%),var(--bg);border-bottom:0}
.hero h1{font-size:clamp(30px,5vw,52px);font-weight:700;letter-spacing:-.01em}
.hero h1 .hl{color:var(--blue)}
.hero p{margin:12px 0 28px}
.searchbox{margin:0 auto;max-width:920px;text-align:left;border-radius:14px;padding:8px}
.searchbox .btn.pri{padding:12px 20px}
.try{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;align-items:center;margin-top:18px;color:var(--muted);font-size:14px}
.try-chip{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:8px;padding:5px 12px;font-size:14px}
.try-chip:hover{border-color:var(--blue);color:var(--blue)}
:root[data-theme="dark"] .hero{background:radial-gradient(1200px 380px at 50% 0,#17304f,transparent 70%),var(--bg)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .hero{background:radial-gradient(1200px 380px at 50% 0,#17304f,transparent 70%),var(--bg)}}

.filterband{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.frow{display:flex;align-items:center;gap:16px;padding-block:16px;flex-wrap:wrap}
.cats{display:flex;gap:10px;flex-wrap:wrap;flex:1;min-width:0}
.chip{padding:9px 20px;border-radius:10px;font-weight:600;font-size:15px}
.chip.on{background:var(--blue-l);border-color:var(--blue-l);color:var(--blue)}
.tcsel{display:flex;align-items:center;gap:8px;color:var(--muted);margin-left:auto}
.tcsel select{border:0;background:transparent;width:auto;min-width:0;padding:6px 4px;color:var(--ink);font-weight:500;cursor:pointer}
.sec-h{margin-top:32px}
.sec-h h2{font-size:28px}
.cnt{background:var(--blue-l);color:var(--blue);border-radius:8px;padding:1px 10px;font-weight:700;font-size:14px}
.sec-sub{margin:-6px 0 18px;color:var(--muted)}

.card{padding:22px;gap:12px}
.card .ctop{display:flex;align-items:center;gap:12px}
.card .ico{width:52px;height:52px;border-radius:12px;color:var(--tone);background:color-mix(in srgb,var(--tone) 13%,transparent)}
.tone-blue{--tone:var(--tone-blue)}.tone-green{--tone:var(--tone-green)}.tone-violet{--tone:var(--tone-violet)}.tone-amber{--tone:var(--tone-amber)}
.card .clabel{color:var(--muted);font-size:14px;font-weight:600}
.card h3{font-size:19px;margin-top:2px}
.card .go{align-items:center;color:var(--blue);margin-top:auto}
.card p{flex:none}

@media (max-width:900px){.brand .bs{display:none}.brand .logo{width:40px;height:40px}.brand .bn{font-size:19px}}
@media (max-width:720px){
  .top .wrap{height:auto;flex-wrap:wrap;gap:6px;padding:8px 12px 0}
  .nav{order:5;width:100%;margin:0;height:44px;overflow-x:auto}
  .nav a{padding:0 12px;font-size:14px;white-space:nowrap}
  .top .sp{flex:1}
  .gearbtn{padding:8px 10px}.gearbtn span{display:none}
  .iconbtn{width:36px;height:36px}.avatar{width:36px;height:36px}
  .hero{padding:32px 0 26px}
  .tcsel{margin-left:0;width:100%}
  .chip{padding:8px 14px}
  .searchbox .btn span{display:none}
}
.top .minisearch{display:block;flex:1;max-width:380px}
.top .minisearch input{padding:10px 14px;border-radius:10px}
.toc .back{margin-top:10px;border-top:1px solid var(--line);padding:14px 10px 6px;border-radius:0;color:var(--muted);font-weight:600;display:flex;gap:6px;align-items:center}
.toc .back:hover{background:none;color:var(--blue)}
.panel.fbp{padding:16px 20px}
.panel.fbp .fb{background:none;padding:0;margin:0}
@media (max-width:1020px){.toc .back{order:-1;border:1px solid var(--line);border-radius:8px;padding:8px 10px;margin:0}}
.top .minisearch input{width:100%;min-width:200px}
.toc .back{font-size:14px;white-space:nowrap;padding-left:10px}
.fbp .fb .q{flex:1 1 180px;min-width:0}
.fbp .fb .btn{padding:8px 12px;white-space:nowrap}
.panel.okp{background:var(--ok-bg);border-color:color-mix(in srgb,var(--ok) 28%,transparent);box-shadow:none}
.okp h2{color:var(--ok);font-size:18px;margin:0}
.okp .res{gap:14px;align-items:flex-start}
.okp .res .ic{background:transparent;border:0;width:auto;height:auto;color:var(--ok)}
.okp p{color:var(--ink)}
.panel.fbp{padding:20px 24px}
.fbp .fb{display:block}
.fbp .fb .q{display:block;font-weight:700;font-size:16px}
.fbp .fb .qs{color:var(--muted);font-size:14px;margin:4px 0 14px}
.fbb{display:flex;flex-wrap:nowrap;gap:10px}
.fbb .btn{gap:8px;padding:9px 16px;white-space:nowrap}
@media (max-width:420px){.fbb .btn{padding:9px 10px;font-size:14px;gap:6px}}
.toc a.on{color:var(--blue);font-weight:700}
.tbar{margin-bottom:4px}
strong{font-weight:700}
.askbg{position:fixed;inset:0;background:rgba(5,15,30,.55);z-index:150;display:grid;place-items:center;padding:16px}
.askbox{background:var(--card);color:var(--ink);border-radius:14px;padding:22px;max-width:420px;width:100%;box-shadow:0 12px 40px rgba(0,0,0,.35)}
.askbox p{margin:0 0 18px;font-size:16px}
.askbtn{display:flex;gap:10px;justify-content:flex-end}
.btn.danger-b{background:var(--bad);border-color:var(--bad)}.btn.danger-b:hover{background:#8f1d17}
.cause{align-items:flex-start;cursor:pointer;text-align:left}
.cause:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.cause .dot{margin-top:2px}
.cause .cbody{flex:1;min-width:0}
.cause .ctitle{font-weight:600}
.errinfo{margin-top:8px;display:flex;flex-direction:column;gap:6px;align-items:flex-start}
.errinfo .elab{font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.errinfo code{font:13px/1.45 ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--bad-bg);color:var(--bad);border-radius:6px;padding:4px 8px;font-weight:600;white-space:normal;word-break:break-word}
.errinfo .enote{font-size:13px;color:var(--muted);font-weight:400}
.ethumbs{display:flex;gap:8px;flex-wrap:wrap}
.ethumb{border:1px solid var(--line);border-radius:8px;padding:0;background:#fff;cursor:zoom-in;overflow:hidden;max-width:min(100%,340px)}
.ethumb img{display:block;width:100%;height:auto}
.cause .fr{margin-top:2px}
.stp.sub{margin-left:46px;grid-template-columns:auto 1fr;gap:8px;align-items:start}
.stp.sub .n{background:var(--navy2);width:auto;min-width:34px;height:26px;padding:0 9px;border-radius:13px;font-size:13px;margin-top:0}
.stp.sub .tx{margin:1px 0 8px}
@media (max-width:720px){.stp.sub{margin-left:0;grid-template-columns:auto 1fr}}
/* trang bài: nội dung rộng hơn, cột hỗ trợ gọn hơn */
.wrap.wide{max-width:1360px}
.layout{grid-template-columns:200px minmax(0,1fr) 236px;gap:20px}
.rail .panel{padding:14px 16px}
.rail .support .ic{width:40px;height:40px;font-size:19px;flex:none}
@media (max-width:1020px){.layout{grid-template-columns:minmax(0,1fr)}}
.top .minisearch{min-width:0;flex:1 1 140px}
.top .minisearch input{min-width:0}
@media (max-width:1060px){.top .minisearch{display:none!important}}
.thumbimg{display:block;width:100%;border:0;padding:0;background:none;cursor:zoom-in;border-radius:6px}
.thumbimg:hover img{outline:2px solid var(--blue)}
.thumbimg:focus-visible{outline:2px solid var(--blue)}
.lb .sc{width:96vw;max-width:96vw;max-height:calc(100vh - 90px);overflow:auto}
.lb img{display:block;margin:0 auto;max-width:none;max-height:none;height:auto}
/* khung xem ảnh: cỡ ban đầu vừa ảnh; phóng to thì khung nở tới 96% chiều ngang rồi cuộn */
.lb .sc{width:auto;max-width:96vw;max-height:calc(100vh - 90px);overflow:auto}
.lb .bar{flex-wrap:wrap;justify-content:center;align-items:center;max-width:96vw}
.lb .bar button{min-width:40px;white-space:nowrap}
.lb .pct{display:flex;align-items:center;gap:2px;background:#fff;border-radius:8px;padding:0 10px;font-weight:700;color:#10233a}
.lb .pct input{width:64px;border:0;outline:0;font:inherit;font-weight:700;text-align:right;padding:8px 0;background:transparent;color:#10233a;-moz-appearance:textfield}
.lb .pct input::-webkit-outer-spin-button,.lb .pct input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.dfwrap{background:var(--bg);padding:10px 12px}
.df{border-radius:8px;padding:8px 10px;margin:0 0 6px;font-size:14px;line-height:1.5;word-break:break-word}
.df.same{color:var(--muted);font-style:italic;background:none;padding:2px 4px}
.df.add{background:var(--ok-bg);border-left:4px solid var(--ok)}
.df.del{background:var(--bad-bg);border-left:4px solid var(--bad)}
.df b{display:block;font-size:12px;margin-bottom:2px}
.df .dft{white-space:pre-wrap}
.dfimg{display:block;max-width:260px;max-height:160px;border:1px solid var(--line);border-radius:6px;background:#fff;margin-top:4px}
.df.same b{font-style:normal;color:var(--muted)}
.df.same .dft{font-style:normal}
/* phân trang */
.sec-h{scroll-margin-top:96px}
.pager{display:flex;justify-content:center;align-items:center;gap:10px;margin:8px 0 48px;flex-wrap:wrap}
.pg{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--muted);font-weight:600;font-size:15px;display:grid;place-items:center;padding:0}
button.pg:hover:not([disabled]){border-color:var(--navy);color:var(--ink)}
.pg.on{background:var(--navy);border-color:var(--navy);color:#fff;box-shadow:0 6px 14px rgba(11,42,74,.3)}
.pg.gap{border-color:transparent;background:none}
.pg.arrow{font-size:22px;line-height:1}
.pg[disabled]{opacity:.4;cursor:not-allowed}
:root[data-theme="dark"] .pg.on{background:#2f86ff;border-color:#2f86ff}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .pg.on{background:#2f86ff;border-color:#2f86ff}}
@media (max-width:420px){.pg{width:38px;height:38px}.pager{gap:6px}}
/* phân trang: gọn hơn */
.pager{gap:8px;margin:6px 0 40px}
.pg{width:36px;height:36px;font-size:14px}
.pg.arrow{font-size:19px}
.pg.on{box-shadow:0 4px 10px rgba(11,42,74,.28)}
@media (max-width:420px){.pg{width:32px;height:32px;font-size:13px}.pager{gap:6px}}
/* màu chữ trong bài + thanh định dạng */
:root{--c-red:#d1242f;--c-blue:#0b5fd0;--c-green:#1a7f37;--c-orange:#c25200}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--c-red:#ff7b72;--c-blue:#79b8ff;--c-green:#56d364;--c-orange:#ffa657}}
:root[data-theme="dark"]{--c-red:#ff7b72;--c-blue:#79b8ff;--c-green:#56d364;--c-orange:#ffa657}
.c-red{color:var(--c-red)}.c-blue{color:var(--c-blue)}.c-green{color:var(--c-green)}.c-orange{color:var(--c-orange)}
em{font-style:italic}
.tbar{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.tbar .tbl{font-size:13px;color:var(--muted);margin-left:6px}
.tbar .sw{width:30px;height:30px;border-radius:8px;border:1px solid var(--line);background:var(--card);font-weight:800;font-size:15px;padding:0;cursor:pointer}
.tbar .sw.c-bg-red{color:var(--c-red)}.tbar .sw.c-bg-blue{color:var(--c-blue)}.tbar .sw.c-bg-green{color:var(--c-green)}.tbar .sw.c-bg-orange{color:var(--c-orange)}
.tbar .sw:hover{border-color:currentColor}

/* ===== Thương hiệu CITEK: logo trên đầu trang + chân trang + thanh GI ===== */
body{min-height:100vh;display:flex;flex-direction:column}
#app{flex:1 0 auto}
.citek-logo{height:24px;width:auto;display:block;object-fit:contain}   /* rộng tối thiểu 80px theo quy chuẩn */
.citek-logo.dk{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .citek-logo.lt{display:none}:root:not([data-theme="light"]) .citek-logo.dk{display:block}}
:root[data-theme="dark"] .citek-logo.lt{display:none}:root[data-theme="dark"] .citek-logo.dk{display:block}
.by{display:flex;flex-direction:column;gap:3px;padding-left:16px;margin-left:2px;border-left:1px solid var(--line);flex:none}
.by-t{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600;line-height:1}
@media (max-width:1100px){.by{display:none}}
.sfoot{flex:none;background:var(--card);border-top:1px solid var(--line);margin-top:24px}
.sfoot .sf-in{display:flex;justify-content:space-between;align-items:center;gap:20px 32px;flex-wrap:wrap;padding-block:26px}
.sf-brand{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.sf-brand .citek-logo{height:30px}
.sf-brand p{margin:0;color:var(--muted);font-size:14px;line-height:1.5;padding-left:20px;border-left:1px solid var(--line)}
.sf-brand p b{color:var(--ink)}
.sf-help{display:flex;flex-direction:column;font-size:14px;color:var(--muted);text-align:right}
.sf-help b{color:var(--ink)}
.citek-gi{display:flex;height:6px}                      /* GI: xanh Peacock : xanh Lime = 5 : 1 */
.citek-gi .gb{flex:5;background:#00586F}.citek-gi .gg{flex:1;background:#A2D45E}
.is-admin #site-footer{display:none}
@media (max-width:720px){.sf-brand p{padding-left:0;border-left:0}.sf-help{text-align:left}}
/* hai nút phản hồi luôn nằm gọn một hàng kể cả màn hình hẹp */
.fbb .btn{flex:1 1 0;min-width:0;justify-content:center}
@media (max-width:420px){.fbb .btn{padding:9px 6px;font-size:13px;gap:5px}}