:root{
  --xanh:#1c2a66; --xanh-2:#26378a; --cam:#f26a1b; --cam-dam:#d9560b;
  --nen:#f7f5f0; --nen-nhat:#efece4; --chu:#1d2433; --mo:#5b6475; --vien:#e4e1d8; --trang:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:16px;line-height:1.65;color:var(--chu);background:var(--nen);padding-bottom:64px}
img{max-width:100%;height:auto;display:block}
a{color:var(--xanh-2)}
h1,h2,h3{line-height:1.25;margin:0 0 .6em}
h2{font-size:clamp(1.45rem,4.2vw,2.1rem);font-weight:800;color:var(--xanh)}
h3{font-size:1.05rem;font-weight:700}
p{margin:0 0 1em}
figure{margin:0}
.khung{width:100%;max-width:1160px;margin:0 auto;padding:0 16px}
.khung.hep{max-width:820px}

/* nút */
.nut{display:inline-flex;align-items:center;justify-content:center;gap:.4em;padding:.8em 1.3em;border-radius:10px;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:inherit;font-size:1rem;line-height:1.2;transition:background .15s,transform .15s}
.nut:active{transform:scale(.98)}
.nut-cam{background:var(--cam);color:#fff}
.nut-cam:hover{background:var(--cam-dam)}
.nut-vien{border-color:rgba(255,255,255,.7);color:#fff;background:transparent}
.nut-vien:hover{background:rgba(255,255,255,.1)}
.nut-zalo{background:var(--cam);color:#fff}
.nut.nho{padding:.55em 1em;font-size:.9rem}
.nut.rong{width:100%}

/* đầu trang */
.dau{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--vien)}
.dau-trong{display:flex;align-items:center;justify-content:space-between;gap:12px;height:60px}
.ten-trang{font-weight:600;color:var(--xanh);text-decoration:none;font-size:1.05rem;white-space:nowrap}
.ten-trang b{color:var(--cam);font-weight:800}
.menu{display:none;gap:22px}
.menu a{color:var(--chu);text-decoration:none;font-weight:500;font-size:.95rem}
.menu a:hover{color:var(--cam)}

/* mở */
.mo{background:linear-gradient(160deg,var(--xanh) 0%,var(--xanh-2) 100%);color:#fff;padding:36px 0 44px}
.mo-trong{display:grid;gap:28px}
.nhan{font-size:.85rem;letter-spacing:.02em;color:#ffd2b5;margin-bottom:.6em;font-weight:500}
.mo h1{font-size:clamp(2.1rem,7vw,3.4rem);font-weight:800;margin-bottom:.35em}
.mo-moc{font-size:1.2rem;font-weight:600}
.mo-phu{color:#dfe4f7}
.uy-tin{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:10px;padding:.7em 1em;font-weight:600}
.mo-nut{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 16px}
.mo-nho{font-size:.92rem;color:#cfd6f0;margin:0}
.mo-anh img{border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.3)}
.mo-anh figcaption{font-size:.8rem;color:#cfd6f0;margin-top:8px}

/* số nhanh */
.so-nhanh{background:#fff;border-bottom:1px solid var(--vien)}
.luoi-so{display:grid;grid-template-columns:repeat(2,1fr)}
.o-so{padding:20px 8px;text-align:center;border-right:1px solid var(--vien);border-bottom:1px solid var(--vien)}
.o-so:nth-child(2n){border-right:0}
.o-so b{display:block;font-size:1.5rem;font-weight:800;color:var(--cam)}
.o-so span{font-size:.85rem;color:var(--mo)}

/* khúc */
.khuc{padding:56px 0}
.nen-nhat{background:var(--nen-nhat)}
.nen-xanh{background:var(--xanh);color:#fff}
.nen-xanh h2{color:#fff}
.nhan-khuc{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--cam);margin-bottom:.5em}
.nhan-khuc.sang{color:#ffb489}
.dan{color:var(--mo);max-width:760px}
.nen-xanh .dan{color:#dfe4f7}
.chu-thich{font-size:.82rem;color:var(--mo);margin-top:14px}
.hai-cot{display:grid;gap:28px;align-items:start}
.anh-don img{border-radius:14px;border:1px solid var(--vien)}

.bang{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--vien);font-size:.95rem}
.bang th,.bang td{padding:10px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--vien)}
.bang tr:last-child th,.bang tr:last-child td{border-bottom:0}
.bang th{width:38%;color:var(--mo);font-weight:600;background:#faf9f6}

.ds-icon{list-style:none;padding:0;margin:0}
.ds-icon li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--vien)}
.ds-icon li:last-child{border-bottom:0}
.ds-icon li span{font-size:1.3rem;line-height:1.3;flex:none}

/* tiện ích */
.luoi-tien-ich{display:grid;gap:12px;margin:24px 0}
.the{background:#fff;border:1px solid var(--vien);border-radius:12px;padding:16px 18px}
.the h3{color:var(--xanh);margin-bottom:.35em}
.the p{margin:0;color:var(--mo);font-size:.95rem}
.luoi-anh{display:grid;gap:12px}
.luoi-anh img{border-radius:12px;border:1px solid var(--vien);width:100%}
.luoi-anh.ba{grid-template-columns:repeat(3,1fr)}
.luoi-anh.ngang{grid-template-columns:repeat(2,1fr)}
.luoi-anh.ngang .doc img{height:100%;object-fit:cover}

/* căn hộ */
.luoi-can{display:grid;grid-auto-flow:column;grid-auto-columns:78%;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 12px;margin-top:20px;-webkit-overflow-scrolling:touch}
.luoi-can figure{scroll-snap-align:start;background:#fff;border:1px solid var(--vien);border-radius:12px;overflow:hidden}
.luoi-can figcaption{padding:10px 14px;font-size:.95rem}
.luoi-can figcaption b{color:var(--xanh)}

/* tiến độ */
.moc{list-style:none;padding:0;margin:0 0 22px;border-left:3px solid var(--cam)}
.moc li{padding:6px 0 10px 16px}
.moc b{display:block;color:var(--cam-dam)}

/* ai mua được */
.ds-so{padding-left:1.3em;margin:0}
.ds-so li{margin-bottom:.8em}
.the-tu-kiem{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:22px}
.the-tu-kiem .to{font-size:1.25rem;font-weight:700}

/* hồ sơ */
.luoi-ho-so{list-style:none;padding:0;margin:20px 0;display:grid;gap:10px}
.luoi-ho-so li{display:flex;gap:12px;background:#fff;border:1px solid var(--vien);border-radius:12px;padding:14px 16px}
.luoi-ho-so span{font-size:1.25rem;flex:none}

/* hỏi đáp */
details{background:#fff;border:1px solid var(--vien);border-radius:12px;margin-bottom:10px}
summary{cursor:pointer;padding:14px 44px 14px 16px;font-weight:600;list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--cam);font-weight:700}
details[open] summary::after{content:"–"}
details p{padding:0 16px 16px;margin:0;color:#384055}

/* form */
.the-form{background:#fff;color:var(--chu);border-radius:14px;padding:22px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.the-form label,.nhan-o{display:block;font-weight:600;font-size:.95rem;margin:0 0 6px}
.the-form label span{font-weight:400;color:var(--mo)}
.the-form input,.the-form textarea{width:100%;font:inherit;padding:.7em .8em;border:1.5px solid #cfd3dc;border-radius:10px;margin-bottom:14px;background:#fff}
.the-form input:focus,.the-form textarea:focus{outline:none;border-color:var(--xanh-2)}
.the-form textarea{min-height:84px;resize:vertical}
.chon{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chon button{font:inherit;font-size:.9rem;padding:.5em .9em;border-radius:999px;border:1.5px solid #cfd3dc;background:#fff;cursor:pointer;color:var(--chu)}
.chon button.on{border-color:var(--cam);background:#fff1e8;color:var(--cam-dam);font-weight:600}
.an{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}
.loi{color:#c0262d;font-size:.9rem;min-height:0;margin:0 0 10px}
.loi:empty{display:none}
.nho-form{font-size:.82rem;color:var(--mo);text-align:center;margin:10px 0 0}
.xong{text-align:center;padding:18px 4px}
.xong .to{font-size:1.2rem;font-weight:700;color:var(--xanh);margin-bottom:.5em}
.lien-he a{color:#fff;font-weight:700}

/* chân trang */
.chan{background:#141d4a;color:#cfd6f0;padding:40px 0 30px;font-size:.95rem}
.chan a{color:#fff}
.chan .ten-trang{color:#fff;font-size:1.2rem;margin-bottom:.8em}
.chan .nho{font-size:.82rem;color:#9ea8cc;margin-top:18px}
.nguon{background:transparent;border-color:rgba(255,255,255,.18);margin-top:12px}
.nguon summary{color:#fff;font-weight:600}
.nguon summary::after{color:#ffb489}
.nguon ul{margin:0;padding:0 16px 16px 34px;font-size:.82rem;color:#b8c1e0}
.nguon li{margin-bottom:6px}

/* thanh dính đáy */
.thanh-day{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:1fr 1fr 1.2fr;background:#fff;border-top:1px solid var(--vien);box-shadow:0 -4px 16px rgba(0,0,0,.08);padding-bottom:env(safe-area-inset-bottom)}
.thanh-day a{display:flex;align-items:center;justify-content:center;height:56px;font-weight:700;text-decoration:none;color:var(--xanh)}
.thanh-day a.cam{background:var(--cam);color:#fff}

/* xem ảnh */
#xem-anh{border:0;padding:0;background:transparent;max-width:96vw;max-height:94vh}
#xem-anh::backdrop{background:rgba(10,14,30,.88)}
#xem-anh img{max-width:96vw;max-height:94vh;border-radius:8px}
#xem-anh button{position:fixed;top:12px;right:12px;width:44px;height:44px;border-radius:50%;border:0;background:#fff;font-size:1.2rem;cursor:pointer}

@media (min-width:720px){
  .luoi-so{grid-template-columns:repeat(4,1fr)}
  .o-so{border-bottom:0;border-right:1px solid var(--vien)!important}
  .o-so:last-child{border-right:0!important}
  .luoi-tien-ich{grid-template-columns:repeat(2,1fr)}
  .luoi-ho-so{grid-template-columns:repeat(2,1fr)}
  .luoi-anh.ngang{grid-template-columns:repeat(3,1fr)}
  .luoi-can{grid-auto-flow:row;grid-template-columns:repeat(3,1fr);grid-auto-columns:auto;overflow:visible}
}
@media (min-width:980px){
  body{padding-bottom:0}
  .thanh-day{display:none}
  .menu{display:flex}
  .mo{padding:60px 0 70px}
  .mo-trong{grid-template-columns:1.05fr 1fr;align-items:center;gap:48px}
  .hai-cot{grid-template-columns:1.3fr 1fr;gap:48px}
  .hai-cot.dao{grid-template-columns:1.3fr 1fr}
  .luoi-tien-ich{grid-template-columns:repeat(4,1fr)}
  .khuc{padding:80px 0}
}
.dong{display:block}
.so-dt{display:none}
@media (min-width:480px){.so-dt{display:inline}}
@media (max-width:360px){
  .ten-trang{font-size:.95rem}
  .nut.nho{padding:.5em .7em;font-size:.82rem}
}