/* Nhà Thật Tân Triều – khung chung.
   Bố cục: dải đầu đỏ kiểu cổng tin nhà đất, thanh mục ngang, nội dung 1 cột rộng ≤1080px, thẻ công cụ trắng. */
:root{
  --red:#b3202a; --red-d:#7d1218; --gold:#e3a21a; --gold-soft:#fdf3dc;
  --bg:#f6f2ef; --card:#ffffff; --ink:#221a19; --mute:#776a67; --line:#e6dcd8;
  --ok:#1d7a3e; --ok-soft:#e5f4ea; --bad:#b3202a; --bad-soft:#fbe7e7; --warn:#a86a00; --warn-soft:#fff2d6;
  --field:#fffdfb; --head-ink:#ffffff;
  --f-body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --f-disp:"Lexend","Be Vietnam Pro",system-ui,sans-serif;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --red:#e0525a; --red-d:#5e0e13; --gold:#f0b43c; --gold-soft:#3a2d12;
  --bg:#171312; --card:#221c1b; --ink:#f2ebe9; --mute:#b3a6a3; --line:#3a302e;
  --ok:#5fcf86; --ok-soft:#173222; --bad:#ff8086; --bad-soft:#3d1a1c; --warn:#f0b43c; --warn-soft:#3a2d12;
  --field:#1b1615; color-scheme:dark}}
:root[data-theme="dark"]{
  --red:#e0525a; --red-d:#5e0e13; --gold:#f0b43c; --gold-soft:#3a2d12;
  --bg:#171312; --card:#221c1b; --ink:#f2ebe9; --mute:#b3a6a3; --line:#3a302e;
  --ok:#5fcf86; --ok-soft:#173222; --bad:#ff8086; --bad-soft:#3d1a1c; --warn:#f0b43c; --warn-soft:#3a2d12;
  --field:#1b1615; color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15.5px;line-height:1.5}
h1,h2,h3{font-family:var(--f-disp);text-wrap:balance;line-height:1.2;margin:0}
a{color:var(--red)}
.band{padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.in{max-width:1080px;margin:0 auto}
.top{background:#9e1b23;background:linear-gradient(100deg,#a51d26,#6f1015);color:#fff;padding-block:12px}
.top .in{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}
.logo b{font-family:var(--f-disp);font-size:clamp(13px,2.2vw,17px);letter-spacing:.2px;line-height:1.25;display:block;max-width:60ch}
.mark-anh{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid #fff;flex:none;background:#fff}
.logo small{display:block;font-size:12px;opacity:.85;font-weight:400}
.mark{width:36px;height:36px;border-radius:9px;background:#fff;color:#a51d26;display:grid;place-items:center;font-family:var(--f-disp);font-weight:800;font-size:17px;flex:none}
.hot{background:#e3a21a;color:#2a1a00;font-weight:700;border-radius:999px;padding:7px 14px;font-size:14px;white-space:nowrap;user-select:all}
.nav{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:env(safe-area-inset-top,0px);z-index:5}
.nav .in{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.nav .in::-webkit-scrollbar{display:none}
.nav a{flex:none;padding:12px 12px;color:var(--ink);text-decoration:none;font-weight:600;font-size:14.5px;border-bottom:3px solid transparent;white-space:nowrap}
.nav a:hover{color:var(--red)}
.nav a.on{color:var(--red);border-bottom-color:var(--red)}
main.band{padding-block:20px 60px}
.top-r{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:14px}
.top-r #tk a{color:#fff}
.hot{text-decoration:none}
.zalo-noi{position:fixed;right:calc(16px + env(safe-area-inset-right,0px));bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:15;width:60px;height:60px;border-radius:50%;background:#0068ff;color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px;text-decoration:none;box-shadow:0 4px 14px rgba(0,60,160,.35);animation:rung 3s infinite}
@keyframes rung{0%,86%,100%{transform:none}90%{transform:rotate(-10deg)}94%{transform:rotate(10deg)}}
.cta-zalo{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px;color:var(--ink);font-size:15px}
a.btn.ok,.btn.ok{background:var(--ok)}
.ai-out{margin-top:10px}
.ph{margin-bottom:16px}
.ph h1{font-size:clamp(22px,4vw,30px)}
.ph p{margin:6px 0 0;color:var(--mute);max-width:68ch}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;min-width:0}
.card h2{font-size:18px;margin-bottom:10px}
.card h3{font-size:15.5px;margin:0 0 6px}
label.f{display:block;font-size:13px;color:var(--mute);margin:10px 0 4px;font-weight:500}
input[type=text],input[type=number],select,textarea{width:100%;border:1px solid var(--line);border-radius:9px;padding:10px 11px;font:inherit;background:var(--field);color:var(--ink)}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--gold);border-color:transparent}
.row{display:flex;gap:10px;flex-wrap:wrap}
.row>*{flex:1 1 130px;min-width:0}
.seg{display:flex;border:1px solid var(--line);border-radius:9px;overflow:hidden}
.seg label{flex:1;text-align:center;padding:9px 6px;cursor:pointer;font-weight:600;font-size:14px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label:has(input:checked){background:var(--red);color:#fff}
.seg label:has(input:focus-visible){outline:2px solid var(--gold);outline-offset:-2px}
button,.btn{font:inherit;border:0;border-radius:10px;padding:11px 16px;font-weight:700;cursor:pointer;background:var(--red);color:#fff;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px}
button:focus-visible,.btn:focus-visible,a:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
button.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
button.ok{background:var(--ok);color:#fff}
button.big{width:100%;font-size:17px;padding:14px}
.hint{font-size:13px;color:var(--mute);margin:6px 0 0}
.pill{display:inline-block;border-radius:999px;padding:2px 10px;font-size:12.5px;font-weight:700}
.pill.ok{background:var(--ok-soft);color:var(--ok)}
.pill.bad{background:var(--bad-soft);color:var(--bad)}
.pill.warn{background:var(--warn-soft);color:var(--warn)}
.num{font-variant-numeric:tabular-nums}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums;font-size:14px}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
th{background:var(--gold-soft);font-weight:700;color:var(--ink)}
th:first-child,td:first-child{text-align:left}
tr:last-child td{border-bottom:0}
.kpi{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.kpi div{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--field)}
.kpi small{display:block;color:var(--mute);font-size:12.5px}
.kpi b{font-family:var(--f-disp);font-size:20px;font-variant-numeric:tabular-nums}
.ai{border:1px dashed var(--gold);background:var(--gold-soft);border-radius:12px;padding:14px}
.ai pre{white-space:pre-wrap;font:inherit;margin:8px 0 0}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%) translateY(140px);background:#1c1514;color:#fff;padding:11px 18px;border-radius:999px;font-weight:600;transition:transform .25s;z-index:20;max-width:calc(100% - 32px);text-align:center}
.toast.on{transform:translateX(-50%) translateY(0)}
.foot{color:var(--mute);font-size:13px;padding-block:18px 30px;border-top:1px solid var(--line)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}
/* Form đăng ký tư vấn cuối trang */
.dk-chung{padding-block:6px 26px}
.dk-the{border:2px solid var(--gold);background:var(--gold-soft);max-width:860px;margin:0 auto}
.dk-dau{display:flex;gap:14px;align-items:center;margin-bottom:6px}
.dk-dau img{width:64px;height:64px;border-radius:50%;object-fit:cover;flex:none;border:2px solid var(--card)}
.dk-dau h2{font-size:19px;margin:0}
.dk-o{display:grid;gap:10px;grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:640px){.dk-o{grid-template-columns:1fr}}
.dk-nhan{margin:14px 0 6px!important;font-weight:600;color:var(--ink)!important;font-size:14px!important}
.dk-nhan small{font-weight:400;color:var(--mute)}
.dk-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.dk-chip{position:relative;cursor:pointer}
.dk-chip input{position:absolute;opacity:0;pointer-events:none}
.dk-chip span{display:inline-flex;align-items:center;gap:6px;border:1.5px solid var(--line);background:var(--card);border-radius:999px;padding:8px 14px;font-size:14.5px;font-weight:600}
.dk-chip span::before{content:"";width:16px;height:16px;border-radius:4px;border:2px solid var(--mute);flex:none}
.dk-chip input:checked+span{border-color:var(--red);background:var(--bad-soft);color:var(--red)}
.dk-chip input:checked+span::before{content:"✓";border-color:var(--red);background:var(--red);color:#fff;font-size:11px;line-height:12px;text-align:center}
.dk-chip input:focus-visible+span{outline:2px solid var(--gold)}
.dk-o{grid-template-columns:repeat(2,minmax(0,1fr))!important}
@media (max-width:640px){.dk-o{grid-template-columns:1fr!important}}