/* Giao diện mẫu. Màu lấy từ config.json (brand.colors) qua biến --primary, --accent, --ink, --muted, --bg, --card, --r.
   Đổi phong cách: sửa biến ở config, hoặc sửa tệp này. Mọi hiệu ứng tắt khi người dùng bật "giảm chuyển động". */
*{box-sizing:border-box}
[hidden]{display:none!important} /* thuộc tính hidden luôn thắng display:flex/grid */
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,"Inter Fallback",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.65;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
@font-face{font-family:"Inter Fallback";src:local("Arial");size-adjust:107%;ascent-override:90%}
img{max-width:100%;height:auto}
a{color:var(--primary)}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(30px,4.4vw,48px);margin:.4em 0}
h2{font-size:clamp(22px,2.8vw,32px);margin:1.6em 0 .5em}
h3{font-size:19px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 12px}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.lede{font-size:19px;color:var(--muted);max-width:62ch}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 22px;background:var(--primary);color:#fff;font:600 15px/1 inherit;font-family:inherit;cursor:pointer;text-decoration:none;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 24px -10px var(--primary)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid #d5dbe6}
.linkbtn{background:none;border:0;padding:0;color:inherit;font:inherit;text-decoration:underline;cursor:pointer}

/* ---- Thanh menu ---- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);border-bottom:1px solid #e6eaf2;transition:background .2s,box-shadow .2s}
.nav.scrolled{background:rgba(255,255,255,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 6px 24px -18px rgba(0,0,0,.4)}
.nav-in{display:flex;align-items:center;gap:18px;height:68px}
.logo img{display:block;height:40px;width:auto}
.menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.menu a.top,.dd-btn{display:flex;align-items:center;gap:6px;padding:10px 12px;border-radius:10px;color:var(--ink);font:500 15px/1 inherit;font-family:inherit;text-decoration:none;background:none;border:0;cursor:pointer;white-space:nowrap}
.menu a.top:hover,.dd-btn:hover,.menu a[aria-current="page"],.dd.on>.dd-btn{color:var(--primary);background:color-mix(in srgb,var(--primary) 8%,transparent)}
.dd{position:relative}
.dd-btn svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.6;transition:transform .15s}
.dd-panel{position:absolute;left:0;top:calc(100% + 8px);min-width:280px;padding:8px;background:var(--card);border:1px solid #e6eaf2;border-radius:var(--r);box-shadow:0 24px 48px -24px rgba(15,23,42,.35);opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .15s,transform .15s,visibility .15s}
.dd-panel::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px} /* cầu nối: rê chuột xuống không mất menu */
.dd-panel a{display:block;padding:10px 12px;border-radius:10px;color:var(--ink);text-decoration:none}
.dd-panel a b{display:block;font-weight:600}
.dd-panel a small{display:block;color:var(--muted);font-size:13px;line-height:1.4;margin-top:2px}
.dd-panel a:hover,.dd-panel a[aria-current="page"]{background:color-mix(in srgb,var(--primary) 8%,transparent)}
@media (hover:hover) and (min-width:1025px){.dd:hover>.dd-panel,.dd:focus-within>.dd-panel{opacity:1;visibility:visible;transform:none}.dd:hover .dd-btn svg{transform:rotate(180deg)}}
.dd.open>.dd-panel{opacity:1;visibility:visible;transform:none}.dd.open .dd-btn svg{transform:rotate(180deg)}
.burger{display:none;width:44px;height:44px;border:1px solid #d5dbe6;border-radius:12px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:20px;height:2px;background:var(--ink);transition:transform .2s,opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (max-width:1024px){
  .burger{display:flex;margin-left:auto}
  .join{display:none}
  .menu{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:10px 16px 18px;background:#fff;border-bottom:1px solid #e6eaf2;max-height:calc(100vh - 68px);overflow:auto}
  .menu.open{display:flex}
  .menu a.top,.dd-btn{width:100%;justify-content:space-between;padding:14px 8px;font-size:16px}
  .dd-panel{position:static;min-width:0;box-shadow:none;border:0;border-left:2px solid color-mix(in srgb,var(--primary) 25%,transparent);border-radius:0;padding:0 0 0 10px;margin:0 0 6px 8px;display:none;opacity:1;visibility:visible;transform:none}
  .dd.open>.dd-panel{display:block}
  .dd-panel a small{display:none}
}

/* ---- Khối nội dung ---- */
main{min-height:60vh}
.crumbs{max-width:1180px;margin:14px auto 0;padding:0 20px;font-size:13px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.hero{position:relative;overflow:hidden;padding:72px 0 56px}
.hero::before{content:"";position:absolute;inset:-30% -10% auto auto;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--primary) 22%,transparent),transparent 65%);animation:troi 18s ease-in-out infinite alternate;pointer-events:none}
@keyframes troi{to{transform:translate(-80px,60px) scale(1.08)}}
.hero .wrap{position:relative}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
section{padding:24px 0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:18px 0}
@media (max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid{grid-template-columns:1fr}}
.card{display:flex;flex-direction:column;gap:8px;padding:22px;background:var(--card);border:1px solid #e6eaf2;border-radius:var(--r);color:var(--ink);text-decoration:none;transition:transform .2s,box-shadow .2s,border-color .2s}
a.card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--primary) 35%,#e6eaf2);box-shadow:0 18px 36px -24px rgba(15,23,42,.45)}
.card img{border-radius:calc(var(--r) - 6px);margin:-6px -6px 4px;width:calc(100% + 12px);max-width:none}
.card p{margin:0;color:var(--muted)}
.tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.meta{font-size:13px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid #d5dbe6;background:#fff;border-radius:999px;padding:8px 14px;font:500 14px/1 inherit;font-family:inherit;cursor:pointer}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.post-body{max-width:780px}
.post-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto}
.post-body th,.post-body td{border-bottom:1px solid #e6eaf2;padding:10px;text-align:left;vertical-align:top}
.post-body figure{margin:24px 0}.post-body figcaption{font-size:13px;color:var(--muted)}
details.faq{border:1px solid #e6eaf2;border-radius:12px;background:var(--card);margin:10px 0;padding:0 16px}
details.faq summary{cursor:pointer;font-weight:600;padding:14px 0}
.cta-box{margin:36px 0;padding:26px;border-radius:var(--r);background:color-mix(in srgb,var(--primary) 7%,var(--card));border:1px solid color-mix(in srgb,var(--primary) 20%,transparent)}
.cta-box h2{margin-top:0}

/* ---- Chân trang, nút nổi ---- */
.foot{margin-top:60px;padding:40px 0 90px;background:var(--ink);color:#cfd6e4}
.foot a,.foot .linkbtn{color:#fff}
.foot-in{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:28px}
.foot h3{color:#fff;font-size:15px;text-transform:uppercase;letter-spacing:.06em}
.foot p{margin:.3em 0}
.copy{font-size:13px;opacity:.7;margin-top:24px}
@media (max-width:800px){.foot-in{grid-template-columns:1fr}}
.float-cta{position:fixed;right:16px;bottom:16px;z-index:40;display:flex;flex-direction:column;gap:10px}
.float-cta a{display:grid;place-items:center;width:54px;height:54px;border-radius:50%;color:#fff;font-weight:700;font-size:13px;text-decoration:none;box-shadow:0 10px 24px -10px rgba(0,0,0,.5)}
.fz{background:#0068ff}.fp{background:var(--accent)}

/* ---- Form trượt, cookie ---- */
.drawer{position:fixed;inset:0;z-index:60}
.drawer-bg{position:absolute;inset:0;background:rgba(15,23,42,.45)}
.drawer-box{position:absolute;right:0;top:0;bottom:0;width:min(440px,100%);background:#fff;padding:28px 24px;overflow:auto;animation:vao .25s ease-out}
@keyframes vao{from{transform:translateX(30px);opacity:0}}
.drawer-x{position:absolute;right:14px;top:10px;border:0;background:none;font-size:30px;cursor:pointer}
form label{display:grid;gap:6px;margin:12px 0;font-size:14px;font-weight:500}
form input,form textarea{font:inherit;padding:12px;border:1px solid #d5dbe6;border-radius:10px;width:100%}
form .consent{grid-template-columns:auto 1fr;align-items:start;font-weight:400;font-size:13px;color:var(--muted)}
form .consent input{width:auto;margin-top:3px}
.hp{position:absolute!important;left:-9999px!important}
.form-msg{min-height:1.4em;font-size:14px}
.form-msg.err{color:#c62828}.form-msg.ok{color:#1b7f3b}
.ck-bar{position:fixed;left:16px;right:16px;bottom:16px;z-index:70;max-width:720px;margin:0 auto;display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:14px 16px;background:#fff;border:1px solid #e6eaf2;border-radius:16px;box-shadow:0 18px 40px -20px rgba(0,0,0,.45);font-size:14px}
.ck-bar p{flex:1 1 300px;margin:0}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* =================== QUANG MINH: giao diện thương hiệu (nối vào style.css khi build) =================== */
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--primary)}
.logo img{height:42px;width:auto}
.logo span{display:flex;flex-direction:column;line-height:1}
.logo b{font-weight:800;font-size:17px;letter-spacing:.06em}
.logo small{font-size:11px;font-weight:600;letter-spacing:.28em;color:var(--accent);margin-top:4px}
.logo-foot{color:#fff;margin-bottom:10px}.logo-foot small{color:var(--gold)}
.btn.gold{background:var(--gold);color:var(--night)}
.btn.gold:hover{box-shadow:0 10px 30px -10px var(--gold)}
.btn.line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn.line:hover{border-color:var(--gold);color:var(--gold);box-shadow:none}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin:0}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}

/* ---- Khối đầu kiểu "não hạt" ---- */
section.hero-ai{position:relative;overflow:hidden;background:radial-gradient(120% 90% at 75% 40%,#13254a 0%,var(--night) 62%);color:#fff;padding:0;min-height:min(720px,92vh);display:flex;align-items:center}
.hero-ai canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero-ai::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,13,26,.92) 0%,rgba(7,13,26,.55) 45%,rgba(7,13,26,0) 70%);pointer-events:none}
.hero-ai .wrap{position:relative;z-index:2;width:100%;padding-top:72px;padding-bottom:72px}
.hero-ai .eyebrow{color:var(--gold)}
.hero-ai h1{font-size:clamp(36px,5.6vw,68px);font-weight:300;letter-spacing:-.03em;line-height:1.04;max-width:12.5em;margin:.35em 0 .3em}
.hero-ai h1 b{font-weight:700;background:linear-gradient(90deg,#fff,var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-ai .lede{color:#b9c3d8;max-width:52ch}
.hero-ai .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:#8e9ab3}
.hero-note span::before{content:"◆ ";color:var(--gold);font-size:10px}
@media (max-width:760px){.hero-ai::after{background:linear-gradient(180deg,rgba(7,13,26,.2) 0%,rgba(7,13,26,.9) 50%)}section.hero-ai{align-items:flex-end;min-height:680px}.hero-ai .wrap{padding-top:220px;padding-bottom:48px}}

/* ---- Dải số liệu ---- */
section.stats{background:var(--night);color:#fff;border-top:1px solid rgba(255,255,255,.08);padding:0}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:28px 22px;border-left:1px solid rgba(255,255,255,.08)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-size:clamp(28px,3.4vw,42px);font-weight:300;letter-spacing:-.02em;color:var(--gold)}
.stat span{font-size:14px;color:#a9b4cb}
@media (max-width:760px){.stats .wrap{grid-template-columns:1fr 1fr}.stat{padding:20px 14px}.stat:nth-child(3){border-left:0;padding-left:0}}

/* ---- Khối nội dung kiểu agency ---- */
section.sec{padding:84px 0}
.sec-head{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:end;margin-bottom:34px}
.sec-head h2{margin:.3em 0 0;font-size:clamp(28px,3.6vw,44px);font-weight:400;letter-spacing:-.025em}
.sec-head h2 b{font-weight:700;color:var(--primary)}
.sec-head p{margin:0;color:var(--muted)}
@media (max-width:760px){section.sec{padding:56px 0}.sec-head{grid-template-columns:1fr}}
.svc{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:900px){.svc{grid-template-columns:1fr}}
.svc a{position:relative;display:flex;flex-direction:column;gap:12px;padding:30px 26px 26px;border-radius:var(--r);background:var(--card);border:1px solid #e7e2d8;color:var(--ink);text-decoration:none;min-height:330px;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.svc a::after{content:"";position:absolute;right:-60px;bottom:-60px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--gold) 28%,transparent),transparent 70%);transition:transform .4s;pointer-events:none}
.svc a:hover{transform:translateY(-4px);border-color:var(--gold);box-shadow:0 26px 50px -30px rgba(14,27,46,.45)}
.svc a:hover::after{transform:scale(1.5)}
.svc .num{font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.1em}
.svc h3{font-size:24px;margin:0;font-weight:600;letter-spacing:-.01em}
.svc ul{margin:0;padding-left:18px;color:var(--muted);font-size:15px}
.svc li{margin:4px 0}
.svc .more{margin-top:auto;font-weight:600;color:var(--primary)}
.svc .more::after{content:" →"}

.why{display:grid;grid-template-columns:repeat(3,1fr);gap:0 28px;border-top:1px solid #e1dbcf}
.why div{padding:26px 0;border-bottom:1px solid #e1dbcf}
.why h3{margin:0 0 6px;font-size:18px}
.why h3::before{content:"";display:block;width:28px;height:2px;background:var(--gold);margin-bottom:14px}
.why p{margin:0;color:var(--muted);font-size:15px}
@media (max-width:900px){.why{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.why{grid-template-columns:1fr}}

section.dark{background:var(--night);color:#e7ecf6}
.dark .sec-head h2 b{color:var(--gold)}
.dark .sec-head p{color:#9aa6bf}
.dark .eyebrow{color:var(--gold)}
ol.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:b;padding:0;margin:0}
.steps li{list-style:none;position:relative;padding:26px 22px;border:1px solid rgba(255,255,255,.1);border-radius:var(--r);background:rgba(255,255,255,.03)}
.steps li::before{counter-increment:b;content:"0" counter(b);display:block;font-size:34px;font-weight:300;color:var(--gold);margin-bottom:8px}
.steps h3{margin:0 0 6px;color:#fff}
.steps p{margin:0;color:#9aa6bf;font-size:15px}
@media (max-width:900px){ol.steps{grid-template-columns:1fr 1fr}}
@media (max-width:600px){ol.steps{grid-template-columns:1fr}}

.areas{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.areas span{padding:10px 16px;border-radius:999px;background:var(--card);border:1px solid #e7e2d8;font-size:14px;font-weight:500}
.split{display:grid;grid-template-columns:1.15fr 1fr;gap:44px;align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr}}
.note{font-size:13px;color:var(--muted);border-left:2px solid var(--gold);padding:4px 0 4px 12px;margin-top:22px}
.cta-band{border-radius:calc(var(--r) + 6px);padding:48px 40px;background:radial-gradient(90% 140% at 100% 0%,#1d3c70,var(--night) 70%);color:#fff;display:grid;grid-template-columns:1.4fr auto;gap:24px;align-items:center}
.cta-band h2{margin:0 0 8px;font-weight:400;font-size:clamp(26px,3vw,38px)}
.cta-band p{margin:0;color:#b9c3d8}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:760px){.cta-band{grid-template-columns:1fr;padding:32px 22px}}

/* ---- Đầu trang con ---- */
section.page-head{background:radial-gradient(100% 140% at 90% 0%,#1a3566,var(--night) 70%);color:#fff;padding:60px 0 54px}
.page-head h1{font-weight:400;letter-spacing:-.02em;max-width:18em;margin:.35em 0 .3em}
.page-head .lede{color:#b9c3d8}
.page-head .eyebrow{color:var(--gold)}
.page-head .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.crumbs{margin:0 auto;padding:12px 20px}
section.body-sec{padding:56px 0}
.body-sec .post-body>h2:first-child{margin-top:0}
.check{list-style:none;padding:0}
.check li{position:relative;padding:6px 0 6px 30px}
.check li::before{content:"";position:absolute;left:2px;top:14px;width:14px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.side{position:sticky;top:90px;padding:26px;border-radius:var(--r);background:var(--card);border:1px solid #e7e2d8}
.side h3{margin-top:0}
.side p{color:var(--muted);font-size:15px}
.side .btn{width:100%;margin-top:8px}
.info dl{display:grid;grid-template-columns:160px 1fr;gap:10px 18px;margin:0}
.info dt{color:var(--muted)}.info dd{margin:0;font-weight:500}
@media (max-width:600px){.info dl{grid-template-columns:1fr;gap:2px}.info dd{margin-bottom:10px}}
.foot{background:var(--night)}
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:900px){.contact-cards{grid-template-columns:1fr}}
.contact-cards .card h3{margin:0}
.contact-cards .card a{font-weight:600}

.dd-btn{font-size:15px}
@media (max-width:1024px){.dd-btn{font-size:16px}}
.btn{font-size:15px;font-weight:600;line-height:1.1}
.foot .copy{margin:24px auto 0}
.hero-ai h1{font-size:clamp(34px,5vw,62px);max-width:11em}
.foot .disclaimer{margin:28px auto 0;font-size:13px;color:#8e9ab3;border-top:1px solid rgba(255,255,255,.08);padding-top:18px}
.post-body ol.nguon{font-size:14px;color:var(--muted);padding-left:20px}
.post-body ol.nguon li{margin:6px 0}
.post-body table{font-size:15px}
.post-body aside.goc-nhin{margin:28px 0;padding:22px 24px;border-radius:var(--r);background:color-mix(in srgb,var(--gold) 12%,var(--card));border:1px solid color-mix(in srgb,var(--gold) 45%,transparent)}
.post-body aside.goc-nhin h2{margin-top:0;font-size:20px}.post-body aside.goc-nhin h2::before{content:"Góc nhìn Quang Minh";color:var(--accent);font-size:13px;letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:6px}
.post-body td.moi{background:color-mix(in srgb,var(--gold) 10%,transparent);font-weight:600}

/* ---- Khung chat "Tra cứu văn bản có dẫn nguồn" ---- */
.qm-chat{position:fixed;left:16px;bottom:16px;z-index:55;font-size:15px}
.qm-chat-mo{display:flex;align-items:center;gap:8px;border:0;border-radius:999px;padding:12px 18px 12px 14px;background:var(--night);color:#fff;font:600 14px/1 inherit;font-family:inherit;cursor:pointer;box-shadow:0 12px 30px -12px rgba(7,13,26,.7)}
.qm-chat-mo span{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--gold);color:var(--night);font-weight:800}
.qm-chat.dang-mo .qm-chat-mo{display:none}
.qm-chat-hop{position:fixed;left:16px;bottom:16px;width:min(420px,calc(100vw - 32px));height:min(620px,calc(100vh - 32px));display:flex;flex-direction:column;background:var(--card);border:1px solid #e7e2d8;border-radius:var(--r);box-shadow:0 30px 60px -24px rgba(7,13,26,.55);overflow:hidden}
.qm-chat-hop[hidden]{display:none!important}
.qm-chat-hop header{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:14px 16px;background:var(--night);color:#fff}
.qm-chat-hop header b{display:block;font-size:15px}
.qm-chat-hop header small{display:block;color:#a9b4cb;font-size:12px;margin-top:2px}
.qm-chat-dong{border:0;background:none;color:#fff;font-size:26px;line-height:1;cursor:pointer;padding:0 4px}
.qm-chat-ds{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:var(--bg)}
.qm-tn{max-width:90%;padding:10px 13px;border-radius:14px;line-height:1.55;word-wrap:break-word}
.qm-tn-nguoi{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:4px}
.qm-tn-bot{align-self:flex-start;background:var(--card);border:1px solid #e7e2d8;border-bottom-left-radius:4px}
.qm-tn-bot ul{margin:6px 0;padding-left:18px}
.qm-tn-loi{border-color:#e7b9a6;background:#fff7f3}
.qm-tn .qm-mt{margin:10px 0 0;padding-top:8px;border-top:1px dashed #e1dbcf;font-size:12px;color:var(--muted)}
.qm-cho{color:var(--muted);font-style:italic}
.qm-chat-goiy{display:flex;flex-wrap:wrap;gap:6px;padding:0 14px 6px;background:var(--bg)}
.qm-chat-goiy .chip{font-size:13px;padding:7px 11px;text-align:left}
.qm-chat-nhap{display:flex;gap:8px;align-items:flex-end;padding:10px 12px;border-top:1px solid #e7e2d8;margin:0}
.qm-chat-nhap textarea{flex:1;resize:none;font:inherit;font-size:16px;padding:10px;border:1px solid #d5dbe6;border-radius:10px;max-height:120px}
.qm-chat-nhap .btn{padding:12px 16px}
.qm-chat-chu{margin:0;padding:0 14px 10px;font-size:12px;color:var(--muted)}
@media (max-width:600px){.qm-chat{left:auto;right:16px;bottom:146px}.qm-chat-mo b{display:none}.qm-chat-mo{padding:0;width:54px;height:54px;justify-content:center}.qm-chat-mo span{width:30px;height:30px;font-size:16px}.qm-chat-hop{left:8px;right:8px;bottom:8px;width:auto;height:calc(100vh - 16px)}}