/* Bo ao san bat dong san.
   SO DO DUOC TU TRANG THAT (alonhadat 21/09/2026), khong tu nghi ra:
     chu 13-14px (khong phai 16-18) · dam 400/700 (khong 800)
     bo goc 5px (khong 20) · gia mau do · nen xam thẻ trang
   Anh Son da che "nhin nhu tre con" hai lan vi bo qua buoc do nay. */

:root {
  --xanh: #0b3d6b;
  --xanh-sang: #1263b0;
  --do: #d0342c;
  --cam: #e8850c;
  --la: #1a9e54;
  --chu: #1c1c1c;
  --chu-nhat: #6b7280;
  --vien: #dfe3e8;
  --nen: #f2f4f7;
  --trang: #fff;
  --bo: 5px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--nen);
  color: var(--chu);
  font: 400 14px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--xanh-sang); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; font-weight: 700; margin: 16px 0 10px; line-height: 1.3; }
h2 { font-size: 17px; font-weight: 700; margin: 22px 0 10px; }
h3 { font-size: 14px; font-weight: 600; margin: 0; }
p { margin: 8px 0; }
img { max-width: 100%; display: block; }

.bao { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.hep { max-width: 720px; }
.nho { font-size: 12px; color: var(--chu-nhat); }
.an { display: none !important; }
.sao { color: var(--do); }

/* ───────── thanh dau ───────── */
.dau {
  background: var(--xanh); color: #fff; position: sticky; top: 0; z-index: 50;
  box-shadow: 0 1px 4px rgba(0,0,0,.18);
}
.dau-trong { display: flex; align-items: center; gap: 22px; height: 54px; }
.hieu { color: #fff; font-size: 17px; font-weight: 700; white-space: nowrap; }
.hieu:hover { text-decoration: none; }
.hieu-o {
  background: var(--cam); color: #fff; border-radius: var(--bo);
  padding: 2px 6px; margin-right: 3px; font-weight: 700;
}
.dau-menu { display: flex; gap: 18px; flex: 1; }
.dau-menu a { color: #dce8f4; font-size: 14px; }
.dau-menu a:hover { color: #fff; }
.dau-phai { display: flex; align-items: center; gap: 12px; }
.n-phu { color: #dce8f4; }
.n-nut {
  background: var(--cam); color: #fff; padding: 7px 14px;
  border-radius: var(--bo); font-weight: 600; white-space: nowrap;
}
.n-nut:hover { background: #cf7708; text-decoration: none; }
.n-toi { position: relative; }
.n-toi > a { color: #fff; font-weight: 600; }
.n-tha {
  display: none; position: absolute; right: 0; top: 100%; background: #fff;
  border: 1px solid var(--vien); border-radius: var(--bo); min-width: 175px;
  box-shadow: 0 4px 14px rgba(0,0,0,.14); overflow: hidden; padding: 4px 0;
}
.n-toi:hover .n-tha { display: block; }
.n-tha a { display: block; padding: 8px 14px; color: var(--chu); font-size: 13px; }
.n-tha a:hover { background: var(--nen); text-decoration: none; }
.dau-bam { display: none; background: none; border: 0; color: #fff; font-size: 22px; }

/* ───────── o tim ───────── */
.hero { background: var(--xanh); color: #fff; padding: 26px 0 30px; }
.hero h1 { font-size: 26px; margin: 0 0 4px; }
.hero-phu { color: #cfe0ef; font-size: 14px; margin: 0 0 16px; }

.loc {
  background: #fff; border-radius: var(--bo); padding: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,.09); margin: 12px 0;
}
.loc-hang1 { display: flex; gap: 8px; align-items: stretch; }
.loc-tab { display: flex; border: 1px solid var(--vien); border-radius: var(--bo); overflow: hidden; }
.loc-tab label {
  padding: 0 14px; display: flex; align-items: center; cursor: pointer;
  font-size: 13px; font-weight: 600; color: var(--chu-nhat); white-space: nowrap;
}
.loc-tab label.on { background: var(--xanh); color: #fff; }
.loc-tab input { display: none; }
.loc-chu {
  flex: 1; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 0 12px; font-size: 14px; height: 38px; min-width: 0;
}
.loc-nut {
  background: var(--cam); color: #fff; border: 0; border-radius: var(--bo);
  padding: 0 24px; font-size: 14px; font-weight: 600; cursor: pointer;
}
.loc-hang2, .loc-hang3 { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.loc-hang3 { display: none; }
.loc-hang3.mo { display: flex; }
.loc select {
  border: 1px solid var(--vien); border-radius: var(--bo); padding: 7px 8px;
  font-size: 13px; background: #fff; flex: 1; min-width: 132px; color: var(--chu);
}
.loc-them {
  background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 7px 12px; font-size: 13px; cursor: pointer; color: var(--xanh-sang);
}
.loc-tick { display: flex; align-items: center; gap: 6px; font-size: 13px; }

/* ───────── luoi tin ───────── */
.muc-dau {
  display: flex; align-items: baseline; justify-content: space-between;
  margin: 24px 0 12px; gap: 12px;
}
.muc-dau h2 { margin: 0; }
.luoi { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }

.the {
  background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  overflow: hidden; color: var(--chu); display: block; transition: box-shadow .13s;
}
.the:hover { box-shadow: 0 3px 12px rgba(0,0,0,.13); text-decoration: none; }
.the-noi { border-color: var(--cam); }
.the-anh { position: relative; aspect-ratio: 4/3; background: #eceff3; }
.the-anh img { width: 100%; height: 100%; object-fit: cover; }
.khong-anh {
  width: 100%; height: 100%; display: flex; align-items: center;
  justify-content: center; color: #9aa3ad; font-size: 12px; background: #eceff3;
}
.co-noi, .co-mau {
  position: absolute; top: 7px; left: 7px; background: var(--cam); color: #fff;
  font-size: 11px; font-weight: 700; padding: 2px 7px; border-radius: 3px;
}
.co-mau { background: #5b6b7d; left: auto; right: 34px; }
.tim-luu {
  position: absolute; top: 5px; right: 5px; width: 26px; height: 26px;
  border: 0; border-radius: 50%; background: rgba(255,255,255,.92);
  cursor: pointer; font-size: 14px; color: #6b7280; line-height: 1;
}
.tim-luu.da { color: var(--do); }
.the-chu { padding: 9px 10px 11px; }
.the-chu h3 {
  font-size: 13px; font-weight: 600; line-height: 1.4; height: 36px;
  overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; margin-bottom: 5px;
}
.the-gia { display: flex; align-items: baseline; gap: 8px; }
.the-gia b { color: var(--do); font-size: 15px; font-weight: 700; }
.the-gia .dt { color: var(--chu); font-size: 13px; }
.m2 { font-size: 11px; color: var(--chu-nhat); display: block; }
.the-noi-o {
  font-size: 12px; color: var(--chu-nhat); margin-top: 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.the-duoi {
  display: flex; justify-content: space-between; font-size: 11px;
  color: var(--chu-nhat); border-top: 1px solid var(--vien);
  margin-top: 8px; padding-top: 7px;
}

.trong {
  background: #fff; border: 1px dashed var(--vien); border-radius: var(--bo);
  padding: 28px; text-align: center; color: var(--chu-nhat); grid-column: 1/-1;
}

.luoi-tinh { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.o-tinh {
  background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 11px; text-align: center; color: var(--chu);
}
.o-tinh:hover { border-color: var(--xanh-sang); text-decoration: none; }
.o-tinh b { display: block; font-size: 13px; }
.o-tinh span { font-size: 11px; color: var(--chu-nhat); }

/* ───────── trang tim ───────── */
.tim-dau {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin: 6px 0 14px; gap: 12px; flex-wrap: wrap;
}
.tim-dau h1 { margin: 0; }
.tim-dem { font-size: 13px; color: var(--chu-nhat); }
.tim-phai { display: flex; gap: 8px; align-items: center; }
.tim-phai select {
  border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 7px 9px; font-size: 13px; background: #fff;
}
.phan-trang { display: flex; gap: 5px; justify-content: center; margin: 24px 0; }
.phan-trang a, .phan-trang span {
  min-width: 34px; height: 34px; display: flex; align-items: center;
  justify-content: center; border: 1px solid var(--vien); border-radius: var(--bo);
  background: #fff; color: var(--chu); font-size: 13px;
}
.phan-trang a.on { background: var(--xanh); color: #fff; border-color: var(--xanh); }

/* ───────── chi tiet ───────── */
.duong-di { font-size: 12px; color: var(--chu-nhat); margin: 12px 0; }
.ct-khung { display: grid; grid-template-columns: 1fr 328px; gap: 20px; align-items: start; }
.ct-trai { background: #fff; border: 1px solid var(--vien); border-radius: var(--bo); padding: 16px; }
.anh-to {
  position: relative; background: #111; border-radius: var(--bo);
  overflow: hidden; aspect-ratio: 4/3;
}
.anh-to img { display: none; width: 100%; height: 100%; object-fit: contain; }
.anh-to img.hien { display: block; }
.anh-to.khong { background: #eceff3; display: flex; align-items: center; justify-content: center; }
.anh-lui, .anh-toi {
  position: absolute; top: 50%; transform: translateY(-50%); border: 0;
  background: rgba(0,0,0,.42); color: #fff; width: 36px; height: 52px;
  font-size: 22px; cursor: pointer;
}
.anh-lui { left: 0; } .anh-toi { right: 0; }
.anh-dem {
  position: absolute; right: 10px; bottom: 10px; background: rgba(0,0,0,.6);
  color: #fff; font-size: 12px; padding: 2px 9px; border-radius: 10px;
}
.anh-nho { display: flex; gap: 6px; overflow-x: auto; margin-top: 8px; padding-bottom: 4px; }
.anh-nho img {
  width: 76px; height: 56px; object-fit: cover; border-radius: 3px;
  cursor: pointer; border: 2px solid transparent; flex: none;
}
.anh-nho img.on { border-color: var(--cam); }
.ct-trai h1 { font-size: 20px; margin: 14px 0 6px; }
.ct-noi { color: var(--chu-nhat); font-size: 13px; }
.ct-gia-hang {
  display: flex; gap: 26px; border-top: 1px solid var(--vien);
  border-bottom: 1px solid var(--vien); padding: 12px 0; margin: 14px 0;
}
.ct-gia span { display: block; font-size: 12px; color: var(--chu-nhat); }
.ct-gia b { font-size: 18px; color: var(--do); }
.ct-gia i { font-size: 11px; color: var(--chu-nhat); font-style: normal; display: block; }
.ct-mo-ta { white-space: pre-line; }
.ct-thong-so { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; }
.ts {
  display: flex; justify-content: space-between; padding: 9px 0;
  border-bottom: 1px solid var(--vien); font-size: 13px;
}
.ts span { color: var(--chu-nhat); }
.ct-duoi {
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--vien);
  font-size: 12px; color: var(--chu-nhat);
}

.ct-phai { position: sticky; top: 68px; display: grid; gap: 12px; }
.hop-lien-he, .hop-nho {
  background: #fff; border: 1px solid var(--vien);
  border-radius: var(--bo); padding: 14px;
}
.lh-nguoi { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.lh-chu {
  width: 42px; height: 42px; border-radius: 50%; background: var(--xanh);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px; flex: none;
}
.lh-nguoi b { display: block; font-size: 14px; }
.lh-nguoi span { font-size: 12px; color: var(--chu-nhat); }
.lh-xem { font-size: 12px; display: block; margin-bottom: 10px; }
.lh-so, .lh-zalo, .lh-luu, .lh-chia {
  width: 100%; display: block; text-align: center; padding: 11px;
  border-radius: var(--bo); font-size: 14px; font-weight: 600;
  cursor: pointer; margin-bottom: 8px; border: 1px solid var(--vien);
  background: #fff; color: var(--chu); font-family: inherit;
}
.lh-so { background: var(--la); color: #fff; border-color: var(--la); font-size: 15px; }
.lh-zalo { background: #0068ff; color: #fff; border-color: #0068ff; }
.lh-zalo:hover { text-decoration: none; color: #fff; }
.hop-nho b { font-size: 13px; }
.tra-gop { font-size: 19px; font-weight: 700; color: var(--do); margin: 6px 0; }
.nho-link { font-size: 12px; }
.canh-bao { background: #fff8e8; border-color: #f0d9a0; }
.canh-bao ul { margin: 6px 0 0; padding-left: 18px; font-size: 12px; color: #6b5a30; }
.canh-bao li { margin-bottom: 4px; }

.bang-bao, .bang-mau {
  background: #fff4d6; border: 1px solid #f0d9a0; border-radius: var(--bo);
  padding: 10px 13px; margin-bottom: 12px; font-size: 13px; color: #7a5c14;
}
.bang-mau { background: #eef2f7; border-color: #cdd7e3; color: #45566b; }

/* ───────── form ───────── */
.the-form, .dang-bao form {
  background: #fff; border: 1px solid var(--vien);
  border-radius: var(--bo); padding: 20px; margin: 14px 0;
}
.the-form { max-width: 430px; margin: 26px auto; }
.the-form.rong { max-width: none; }
.form-tab { display: flex; gap: 0; margin: -20px -20px 18px; border-bottom: 1px solid var(--vien); }
.form-tab button {
  flex: 1; padding: 13px; border: 0; background: #f7f9fb; font-size: 14px;
  font-weight: 600; cursor: pointer; color: var(--chu-nhat); font-family: inherit;
}
.form-tab button.on { background: #fff; color: var(--xanh); box-shadow: inset 0 -2px 0 var(--cam); }
label { display: block; margin-bottom: 13px; font-size: 13px; font-weight: 600; }
input, select, textarea {
  width: 100%; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 9px 10px; font-size: 14px; font-family: inherit; margin-top: 4px;
  font-weight: 400; color: var(--chu); background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid #bcd6f0; border-color: var(--xanh-sang); }
textarea { resize: vertical; }
.o-don { display: flex; align-items: center; gap: 0; }
.o-don input { border-radius: var(--bo) 0 0 var(--bo); }
.o-don span {
  background: #f2f4f7; border: 1px solid var(--vien); border-left: 0;
  border-radius: 0 var(--bo) var(--bo) 0; padding: 9px 11px; font-size: 13px;
  color: var(--chu-nhat); margin-top: 4px; white-space: nowrap; font-weight: 400;
}
.goi-y { display: block; font-size: 11px; color: var(--chu-nhat); font-weight: 400; margin-top: 3px; }
.tick, .loc-tick { font-weight: 400; }
.tick input, .loc-tick input { width: auto; margin: 0 6px 0 0; }
fieldset { border: 0; border-top: 1px solid var(--vien); padding: 14px 0 4px; margin: 0; }
fieldset:first-of-type { border-top: 0; padding-top: 0; }
legend { font-weight: 700; font-size: 14px; color: var(--xanh); padding: 0 8px 0 0; }
.hang2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.hang3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 12px; }
.o-doi { display: flex; gap: 10px; margin-bottom: 13px; }
.chon {
  flex: 1; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 11px; cursor: pointer; margin: 0; text-align: center;
}
.chon:has(input:checked) { border-color: var(--cam); background: #fff7ed; }
.chon input { width: auto; margin-right: 5px; }

.nut-to {
  background: var(--cam); color: #fff; border: 0; border-radius: var(--bo);
  padding: 12px 22px; font-size: 15px; font-weight: 700; cursor: pointer;
  width: 100%; font-family: inherit;
}
.nut-to:hover { background: #cf7708; }
.nut-vien {
  background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 8px 14px; font-size: 13px; cursor: pointer; color: var(--chu);
  font-family: inherit; display: inline-block; text-align: center;
}
.nut-vien:hover { border-color: var(--xanh-sang); color: var(--xanh-sang); text-decoration: none; }
.nut-chu {
  background: none; border: 0; color: var(--xanh-sang); font-size: 13px;
  cursor: pointer; padding: 8px 6px; font-family: inherit;
}
.nut-chu.do { color: var(--do); }
.nho-nut { width: auto; padding: 8px 16px; font-size: 13px; }
.dang-nut { display: flex; gap: 10px; margin-top: 18px; }
.dang-nut .nut-to { width: auto; flex: 1; }
.loi { color: var(--do); font-size: 13px; margin-top: 10px; min-height: 18px; }
.loi.xanh { color: var(--la); }

.o-anh { display: flex; gap: 9px; flex-wrap: wrap; margin-bottom: 6px; }
.o-anh .tam { position: relative; width: 104px; height: 78px; }
.o-anh .tam img { width: 100%; height: 100%; object-fit: cover; border-radius: 3px; }
.o-anh .tam button {
  position: absolute; top: -6px; right: -6px; width: 21px; height: 21px;
  border-radius: 50%; border: 0; background: var(--do); color: #fff;
  cursor: pointer; font-size: 13px; line-height: 1;
}
.them-anh {
  width: 104px; height: 78px; border: 2px dashed var(--vien); border-radius: 3px;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  color: var(--chu-nhat); font-size: 12px; margin: 0; font-weight: 400;
}

/* ───────── trang toi / quan ly ───────── */
.tab-hang { display: flex; gap: 2px; border-bottom: 1px solid var(--vien); margin-bottom: 14px; flex-wrap: wrap; }
.tab-hang a {
  padding: 10px 15px; color: var(--chu-nhat); font-size: 13px; font-weight: 600;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab-hang a.on { color: var(--xanh); border-bottom-color: var(--cam); }
.tab-hang a:hover { text-decoration: none; }
.dem-hang { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 14px; font-size: 13px; }
.dong-tin, .dong-tim {
  background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 12px; margin-bottom: 9px; display: flex; gap: 13px; align-items: flex-start;
}
.dong-tim { justify-content: space-between; align-items: center; }
.dt-anh { width: 112px; height: 84px; flex: none; border-radius: 3px; overflow: hidden; }
.dt-anh img { width: 100%; height: 100%; object-fit: cover; }
.dt-chu { flex: 1; min-width: 0; }
.dt-chu b { font-size: 14px; }
.mo-ta-ngan { margin-top: 4px; }
.dt-tt { flex: none; width: 120px; }
.dt-nut { display: flex; gap: 4px; flex-wrap: wrap; align-items: flex-start; justify-content: flex-end; flex: none; }
.nhan {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  font-size: 11px; font-weight: 600;
}
.nhan.xanh { background: #e3f6ea; color: #146e3c; }
.nhan.vang { background: #fff2d6; color: #8a6412; }
.nhan.do { background: #fde8e7; color: #a5211a; }
.nhan.xam { background: #eef0f3; color: #5a636e; }

.bang { width: 100%; border-collapse: collapse; background: #fff; font-size: 13px; }
.bang th, .bang td { border: 1px solid var(--vien); padding: 8px 10px; text-align: left; }
.bang th { background: #f7f9fb; font-weight: 600; }

.ho-so { display: flex; gap: 16px; align-items: flex-start; background: #fff;
  border: 1px solid var(--vien); border-radius: var(--bo); padding: 18px; margin: 14px 0; }
.hs-chu {
  width: 60px; height: 60px; border-radius: 50%; background: var(--xanh);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700; flex: none;
}
.ho-so h1 { margin: 0 0 3px; font-size: 20px; }

.ket-qua { background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 18px; margin-top: 14px; }
.ket-qua .to { font-size: 26px; font-weight: 700; color: var(--do); }
.ket-qua table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 12px; }
.ket-qua td { padding: 7px 0; border-bottom: 1px solid var(--vien); }
.ket-qua td:last-child { text-align: right; font-weight: 600; }

.van-ban { background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 22px; margin: 16px auto; }
.van-ban h2 { font-size: 15px; }

/* ───────── chan trang ───────── */
.chan { background: #16334d; color: #b9c9d8; margin-top: 44px; padding: 28px 0 16px; font-size: 13px; }
.chan-cot { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 22px; }
.chan b { color: #fff; display: block; margin-bottom: 8px; font-size: 14px; }
.chan a { color: #b9c9d8; display: block; margin-bottom: 5px; }
.chan a:hover { color: #fff; }
.chan p { margin: 0; line-height: 1.6; }
.chan-duoi { border-top: 1px solid #27506f; margin-top: 20px; padding-top: 13px; font-size: 12px; }

/* ───────── hop bay len ───────── */
.man-che {
  position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 100;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.hop-bay {
  background: #fff; border-radius: var(--bo); padding: 20px; max-width: 420px;
  width: 100%; max-height: 90vh; overflow: auto;
}
.hop-bay h3 { font-size: 16px; margin-bottom: 12px; }
.mach {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%);
  background: #1c1c1c; color: #fff; padding: 11px 20px; border-radius: 22px;
  font-size: 13px; z-index: 200; opacity: 0; transition: opacity .2s;
  pointer-events: none; max-width: 90vw; text-align: center;
}
.mach.hien { opacity: .95; }

/* Thanh goi dinh day — CHI tren dien thoai.
   Tren may tinh da co hop lien he nam ben phai, nhin thay ngay.
   Tren dien thoai hop do bi day xuong tan cuoi trang, khach phai cuon
   rat xa moi goi duoc — ma bam goi chinh la viec sinh tien cua trang. */
.thanh-goi { display: none; }

/* ───────── man hinh nho ───────── */
@media (max-width: 1080px) {
  .luoi { grid-template-columns: repeat(3, 1fr); }
  .luoi-tinh { grid-template-columns: repeat(4, 1fr); }
  .ct-khung { grid-template-columns: 1fr 290px; }
}
@media (max-width: 900px) {
  .thanh-goi {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    gap: 8px; padding: 9px 12px calc(9px + env(safe-area-inset-bottom));
    background: #fff; border-top: 1px solid var(--vien);
    box-shadow: 0 -2px 10px rgba(0,0,0,.12);
  }
  .tg-so {
    flex: 1; background: var(--la); color: #fff; border: 0;
    border-radius: var(--bo); padding: 12px; font-size: 15px;
    font-weight: 700; font-family: inherit; cursor: pointer;
  }
  .tg-zalo {
    background: #0068ff; color: #fff; border-radius: var(--bo);
    padding: 12px 15px; font-weight: 600; display: flex; align-items: center;
  }
  .tg-zalo:hover { color: #fff; text-decoration: none; }
  .tg-luu {
    width: 46px; border: 1px solid var(--vien); border-radius: var(--bo);
    background: #fff; font-size: 19px; cursor: pointer; color: #6b7280;
  }
  .tg-luu.da { color: var(--do); }
  /* Chua chan trang de thanh goi khong de len chu cuoi cung */
  .chi-tiet ~ .chan, body:has(.thanh-goi) .chan { padding-bottom: 86px; }
  .dau-menu { display: none; }
  .dau-menu.mo {
    display: flex; flex-direction: column; position: absolute; top: 54px;
    left: 0; right: 0; background: var(--xanh); padding: 12px 16px; gap: 12px;
  }
  .dau-bam { display: block; order: 3; }
  .dau-trong { gap: 12px; }
  .hieu { flex: 1; }
  .ct-khung { grid-template-columns: 1fr; }
  .ct-phai { position: static; }
  .luoi { grid-template-columns: repeat(2, 1fr); }
  .luoi-tinh { grid-template-columns: repeat(3, 1fr); }
  .chan-cot { grid-template-columns: 1fr 1fr; }
  .hang3 { grid-template-columns: 1fr 1fr; }
  .dong-tin { flex-wrap: wrap; }
  .dt-tt { width: auto; }
  .dt-nut { justify-content: flex-start; width: 100%; }
}
@media (max-width: 620px) {
  h1 { font-size: 19px; }
  .hero h1 { font-size: 21px; }
  .loc-hang1 { flex-wrap: wrap; }
  .loc-chu { width: 100%; flex: none; order: 3; }
  .loc-tab { flex: 1; }
  .loc-nut { padding: 0 18px; }
  .loc select { min-width: calc(50% - 4px); }
  .luoi { grid-template-columns: 1fr 1fr; gap: 10px; }
  .the-chu h3 { font-size: 12.5px; }
  .luoi-tinh { grid-template-columns: 1fr 1fr; }
  .hang2, .hang3 { grid-template-columns: 1fr; }
  .chan-cot { grid-template-columns: 1fr; }
  .ct-thong-so { grid-template-columns: 1fr; }
  .ct-gia-hang { gap: 16px; }
  .dang-nut { flex-direction: column; }
  .ct-trai { padding: 12px; }
  .bao { padding: 0 12px; }
}

/* ───────── Cài đặt & bảo mật ───────── */
.bm-luoi { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
.hop-bm {
  background: #fff; border: 1px solid var(--vien); border-radius: var(--bo); padding: 18px;
}
.hop-bm.rong { grid-column: 1 / -1; }
.hop-bm h2 { margin-top: 0; font-size: 16px; }
.hop-bm.nguy { border-color: #f0c4c1; background: #fffafa; }
.bm-dong {
  display: flex; align-items: center; gap: 12px; padding: 11px 0;
  border-bottom: 1px solid var(--vien); flex-wrap: wrap;
}
.bm-dong > div:first-child { flex: 1; min-width: 150px; }
.bm-dong:last-of-type { border-bottom: 0; }
/* Khoi an: bo lop `bm-an` la hien ra. Viet ro hai the nay chu khong dung
   meo :not(.bm-an) — meo do doc kho ma khong loi ich gi. */
.bm-an { display: none; }
#oXacMinh, #oXacThucSo, #oMaSo, #oXoaTK {
  background: var(--nen); border-radius: var(--bo);
  padding: 14px; margin-top: 10px;
}
.hop-bm input[maxlength="6"] {
  font-size: 22px; letter-spacing: 6px; text-align: center; font-weight: 700;
}
.nut-to.do-nen { background: var(--do); }
.nut-to.do-nen:hover { background: #b32a23; }

/* ───────── trang văn bản ───────── */
.van-ban-bao { padding-bottom: 20px; }
.vb-khung { display: grid; grid-template-columns: 230px 1fr; gap: 18px; align-items: start; margin-top: 14px; }
.vb-ben {
  background: #fff; border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 14px; position: sticky; top: 68px;
}
.vb-ben b { display: block; font-size: 13px; margin-bottom: 8px; color: var(--chu-nhat); }
.vb-ben a {
  display: block; padding: 7px 9px; border-radius: var(--bo);
  color: var(--chu); font-size: 13px;
}
.vb-ben a:hover { background: var(--nen); text-decoration: none; }
.vb-ben a.on { background: var(--xanh); color: #fff; font-weight: 600; }
.van-ban h2 { font-size: 16px; color: var(--xanh); margin-top: 24px; }
.van-ban h2:first-of-type { margin-top: 4px; }
.van-ban ul, .van-ban ol { padding-left: 20px; }
.van-ban li { margin-bottom: 6px; }
.ngay-cap-nhat { color: var(--chu-nhat); font-size: 12px; margin: 0 0 4px; }
.dan-nhap {
  background: var(--nen); border-left: 3px solid var(--cam);
  padding: 11px 14px; border-radius: 0 var(--bo) var(--bo) 0;
}
.bang-vb { width: 100%; border-collapse: collapse; font-size: 13px; margin: 12px 0; }
.bang-vb th, .bang-vb td {
  border: 1px solid var(--vien); padding: 9px 11px; text-align: left; vertical-align: top;
}
.bang-vb th { background: #f7f9fb; font-weight: 600; width: 27%; }
.bang-vb tr:first-child th { width: auto; }
.buoc-lon li { margin-bottom: 10px; }
.vb-cuoi { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--vien); }
.vb-cuoi b { font-size: 13px; color: var(--chu-nhat); }
.vb-lien-quan { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.vb-lien-quan a {
  background: var(--nen); border: 1px solid var(--vien); border-radius: var(--bo);
  padding: 6px 11px; font-size: 13px;
}
.vb-lien-quan a:hover { text-decoration: none; border-color: var(--xanh-sang); }

/* ───────── chân trang mới ───────── */
.chan-cot { grid-template-columns: 1.7fr 1fr 1fr 1fr 1fr; }
.chan-dv p { font-size: 12px; line-height: 1.7; }
.chan-chua { color: #8fa6bb; font-style: italic; }
.chan-bct {
  display: inline-block; margin-top: 8px; border: 1px solid #3d6b88;
  border-radius: 3px; padding: 5px 10px; font-size: 11px;
}
.chan-duoi { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.chan-nhac { color: #8fa6bb; }

@media (max-width: 900px) {
  .bm-luoi { grid-template-columns: 1fr; }
  .vb-khung { grid-template-columns: 1fr; }
  .vb-ben { position: static; }
  .vb-ben a { display: inline-block; }
  .chan-cot { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .chan-cot { grid-template-columns: 1fr; }
  .bang-vb th { width: auto; }
}