/* ============================================================
   REDPOWER — Bộ giao diện mẫu
   BẢNG MÀU THƯƠNG HIỆU — đo trực tiếp từ file logo gốc (logo.png)
     Đỏ   #DE2127  (35,7% pixel logo)  — màu chủ đạo, nút hành động
     Xanh #2A3279  (17,2% pixel logo)  — nền đậm, chân trang, tiêu đề
     Cam  #F79620  ( 1,5% pixel logo)  — nhấn phụ, cảnh báo, ngày giờ
     Trắng #FFFFFF
   Bản Logo Guideline (hệ in CMYK) ghi: đỏ #E30613 · xanh #23307D · cam #F7941E
   — lệch nhẹ so với file PNG; web lấy theo file PNG để khớp đúng logo hiển thị.
   Thang xanh dựng cùng sắc độ 234°: đậm #181C44 · chuẩn #2A3279 · nhạt #3A45A7
   ============================================================ */

:root{
  --do:#DE2127;          /* đỏ chuẩn, lấy từ file logo gốc REDPOWER */
  --do-dam:#B31A1F;
  --do-nhat:#FFF0F1;
  --xanh:#2A3279;          /* thay cho màu đen của đối thủ */
  --xanh-dam:#181C44;
  --xanh-nhat:#3A45A7;
  --trang:#ffffff;
  --xam-nen:#F5F6FA;
  --xam-vien:#E3E4EF;
  --xam-chu:#5B5F7F;
  --chu:#131633;
  --vang:#F79620;

  --bo-goc:14px;
  --bo-goc-nho:8px;
  --bong:0 6px 24px rgba(42,50,121,.08);
  --bong-hover:0 14px 38px rgba(42,50,121,.16);
  --rong:1240px;
  --chuyen:.28s cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Be Vietnam Pro",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px; line-height:1.65; color:var(--chu); background:var(--trang);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--chuyen)}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.25;font-weight:700;color:var(--xanh)}
h1{font-size:clamp(1.9rem,4vw,3rem)}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
h3{font-size:clamp(1.05rem,1.6vw,1.3rem)}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}

.wrap{max-width:var(--rong);margin:0 auto;padding:0 20px}
.section{padding:70px 0}
.section--xam{background:var(--xam-nen)}
.section--xanh{background:var(--xanh);color:#DBDDF2}
.section--xanh h2,.section--xanh h3{color:#fff}

/* ---------- Tiêu đề khối ---------- */
.tieu-de{text-align:center;max-width:780px;margin:0 auto 42px}
.tieu-de .nhan{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--do);background:var(--do-nhat);
  padding:6px 16px;border-radius:99px;margin-bottom:14px;
}
.tieu-de h2{margin-bottom:12px}
.tieu-de p{color:var(--xam-chu);margin:0}
.tieu-de--trai{text-align:left;margin-left:0}
.section--xanh .tieu-de p{color:#B9BDE0}
.section--xanh .tieu-de .nhan{background:rgba(222,33,39,.18);color:#ff8f94}

/* ---------- Nút ---------- */
.nut{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:13px 28px;border-radius:99px;font-weight:600;font-size:.95rem;
  border:2px solid transparent;cursor:pointer;transition:all var(--chuyen);
  font-family:inherit;
}
.nut--do{background:var(--do);color:#fff;box-shadow:0 6px 18px rgba(222,33,39,.28)}
.nut--do:hover{background:var(--do-dam);transform:translateY(-2px);box-shadow:0 10px 26px rgba(222,33,39,.38)}
.nut--xanh{background:var(--xanh);color:#fff}
.nut--xanh:hover{background:var(--xanh-nhat);transform:translateY(-2px)}
.nut--vien{border-color:var(--xam-vien);color:var(--xanh);background:transparent}
.nut--vien:hover{background:var(--xanh);color:#fff;border-color:var(--xanh)}
.nut--trang{background:#fff;color:var(--do)}
.nut--trang:hover{transform:translateY(-2px)}
.nut--vien-trang{border-color:rgba(255,255,255,.6);color:#fff}
.nut--vien-trang:hover{background:#fff;color:var(--xanh)}
.nut--nho{padding:9px 20px;font-size:.86rem}

/* ---------- Ảnh giữ chỗ ----------
   Cách thay ảnh thật: bỏ file ảnh vào assets/img/ rồi thêm
   style="background-image:url(assets/img/ten-anh.jpg)" vào thẻ .anh */
.anh{
  position:relative;overflow:hidden;
  background-color:var(--xanh);
  background-image:linear-gradient(135deg,#2A3279 0%,#3A45A7 55%,#8e1519 145%);
  background-size:cover;background-position:center;
}
.anh::after{
  content:attr(data-nhan);position:absolute;inset:0;display:flex;
  align-items:center;justify-content:center;text-align:center;padding:12px;
  color:rgba(255,255,255,.5);font-size:.78rem;font-weight:600;letter-spacing:.05em;
  text-transform:uppercase;pointer-events:none;
}
.anh[style*="url"]::after{display:none}
/* Ảnh sản phẩm: nền trắng, hiện trọn khung thay vì cắt */
.anh--sp{background-color:#fff;background-size:contain;background-repeat:no-repeat;background-position:center}
.anh--sp::after{color:#989BB3}
.ty-16-9{aspect-ratio:16/9}
.ty-4-3{aspect-ratio:4/3}
.ty-1-1{aspect-ratio:1/1}
.ty-3-2{aspect-ratio:3/2}

/* ============================================================
   HEADER
   ============================================================ */
.thanh-top{background:var(--xanh-dam);color:#C6C9E6;font-size:.84rem}
.thanh-top .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:40px;flex-wrap:wrap}
.thanh-top a:hover{color:#fff}
.thanh-top .lien-he-top{display:flex;gap:22px;flex-wrap:wrap}
.thanh-top .lien-he-top span{display:inline-flex;align-items:center;gap:7px}
.thanh-top .mxh{display:flex;gap:14px}

.bang-chay{background:var(--do);color:#fff;font-size:.86rem;font-weight:600;text-align:center;padding:9px 20px}
.bang-chay a{text-decoration:underline;text-underline-offset:3px}

.header{position:sticky;top:0;z-index:60;background:#fff;box-shadow:0 2px 14px rgba(42,50,121,.07)}
.header .wrap{display:flex;align-items:center;gap:28px;min-height:92px;position:relative}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.4rem;letter-spacing:-.02em;color:var(--xanh)}
.logo .tia{
  width:38px;height:38px;border-radius:10px;background:var(--do);
  display:grid;place-items:center;color:#fff;font-size:1.15rem;
  box-shadow:0 4px 12px rgba(222,33,39,.35)
}
/* Logo xếp dọc (biểu tượng + chữ + khẩu hiệu) nên cần cao hơn logo nằm ngang */
.logo img{height:64px;width:auto;display:block}
.footer .logo img{height:72px}
@media (max-width:760px){ .logo img{height:48px} }
.logo b{color:var(--do)}
.logo small{display:block;font-size:.62rem;font-weight:600;letter-spacing:.12em;color:var(--xam-chu);text-transform:uppercase;line-height:1}

.menu{display:flex;gap:2px;margin-left:auto;list-style:none;padding:0;margin-bottom:0}
.menu>li{position:relative}
.menu>li>a{
  display:block;padding:12px 14px;font-weight:600;font-size:.94rem;color:var(--xanh);border-radius:8px;
}
.menu>li>a:hover,.menu>li.active>a{color:var(--do);background:var(--do-nhat)}
.menu .co-con>a::after{content:"▾";margin-left:6px;font-size:.75rem;opacity:.6}
.menu-con{
  position:absolute;top:100%;left:0;min-width:250px;background:#fff;border-radius:12px;
  box-shadow:var(--bong-hover);padding:8px;list-style:none;margin:0;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all var(--chuyen);
}
.menu .co-con:hover .menu-con{opacity:1;visibility:visible;transform:translateY(0)}
.menu-con a{display:block;padding:10px 14px;border-radius:8px;font-size:.91rem;font-weight:500}
.menu-con a:hover{background:var(--do-nhat);color:var(--do)}
.header .nut{white-space:nowrap}

.nut-menu{display:none;background:none;border:0;font-size:1.5rem;color:var(--xanh);cursor:pointer;margin-left:auto;padding:6px}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;min-height:600px;display:flex;align-items:center;overflow:hidden}
.hero .anh{position:absolute;inset:0}
.hero::before{
  content:"";position:absolute;inset:0;z-index:2;
  background:linear-gradient(90deg,rgba(24,28,68,.88) 0%,rgba(24,28,68,.5) 55%,rgba(24,28,68,.2) 100%)
}
.hero .wrap{position:relative;z-index:3;width:100%;padding-top:70px;padding-bottom:70px}
.hero-the{
  max-width:580px;background:var(--do);color:#fff;padding:40px;border-radius:var(--bo-goc);
  box-shadow:0 20px 60px rgba(0,0,0,.3)
}
.hero-the .nhan-nho{font-size:.85rem;font-weight:600;opacity:.92;margin-bottom:10px;display:block}
.hero-the h1{color:#fff;margin-bottom:16px}
.hero-the p{color:rgba(255,255,255,.94);font-size:1rem;margin-bottom:24px}
.hero-nut{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Dải chỉ số ---------- */
.dai-so{background:var(--xanh);color:#fff}
.dai-so .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:34px;padding-bottom:34px}
.dai-so .o{text-align:center;border-right:1px solid rgba(255,255,255,.14)}
.dai-so .o:last-child{border-right:0}
.dai-so .so{font-size:2.2rem;font-weight:800;color:#fff;line-height:1.1}
.dai-so .so span{color:var(--do)}
.dai-so .so span[data-dem]{color:#fff}
.dai-so .mo-ta{font-size:.9rem;color:#A9AED8}

/* ============================================================
   THẺ SẢN PHẨM
   ============================================================ */
.luoi{display:grid;gap:24px}
.luoi-2{grid-template-columns:repeat(2,1fr)}
.luoi-3{grid-template-columns:repeat(3,1fr)}
.luoi-4{grid-template-columns:repeat(4,1fr)}

.the-sp{
  background:#fff;border:1px solid var(--xam-vien);border-radius:var(--bo-goc);
  overflow:hidden;display:flex;flex-direction:column;transition:all var(--chuyen);position:relative
}
.the-sp:hover{transform:translateY(-6px);box-shadow:var(--bong-hover);border-color:transparent}
.the-sp .anh{aspect-ratio:4/3}
.the-sp .noi-dung{padding:18px;display:flex;flex-direction:column;flex:1}
.the-sp .danh-muc{font-size:.73rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--do);margin-bottom:8px}
.the-sp h3{font-size:1rem;margin-bottom:10px;min-height:2.5em}
.the-sp h3 a:hover{color:var(--do)}
.the-sp .thong-so{list-style:none;padding:0;margin:0 0 16px;font-size:.86rem;color:var(--xam-chu)}
.the-sp .thong-so li{display:flex;justify-content:space-between;gap:10px;padding:4px 0;border-bottom:1px dashed var(--xam-vien)}
.the-sp .thong-so li b{color:var(--chu);font-weight:600;text-align:right}
.the-sp .chan{margin-top:auto;display:flex;gap:8px}
.the-sp .chan .nut{flex:1}

.nhan-goc{
  position:absolute;top:12px;left:12px;z-index:2;padding:5px 12px;border-radius:99px;
  font-size:.71rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#fff
}
.nhan-goc--do{background:var(--do)}
.nhan-goc--xanh{background:var(--xanh)}
.nhan-goc--vang{background:var(--vang);color:var(--xanh-dam)}

/* ---------- Tab nhóm ---------- */
.tab-nhom{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.tab-nhom button{
  padding:10px 22px;border-radius:99px;border:1px solid var(--xam-vien);background:#fff;
  font-family:inherit;font-weight:600;font-size:.9rem;color:var(--xanh);cursor:pointer;transition:all var(--chuyen)
}
.tab-nhom button:hover{border-color:var(--do);color:var(--do)}
.tab-nhom button.active{background:var(--do);border-color:var(--do);color:#fff}

/* ============================================================
   THẺ DỰ ÁN / BÀI VIẾT
   ============================================================ */
.the-da{
  position:relative;border-radius:var(--bo-goc);overflow:hidden;display:block;
  transition:all var(--chuyen);background:var(--xanh)
}
.the-da .anh{aspect-ratio:4/3;transition:transform .6s ease}
.the-da::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(24,28,68,.94) 8%,rgba(24,28,68,.4) 48%,transparent 76%)
}
.the-da .chu{position:absolute;bottom:0;left:0;right:0;z-index:2;padding:22px;color:#fff}
.the-da .cong-suat{
  display:inline-block;background:var(--do);color:#fff;font-size:.75rem;font-weight:700;
  padding:4px 12px;border-radius:99px;margin-bottom:10px
}
.the-da h3{color:#fff;font-size:1.02rem;margin-bottom:6px}
.the-da .dia-diem{font-size:.85rem;color:#B9BDE0;margin:0}
.the-da:hover{transform:translateY(-6px);box-shadow:var(--bong-hover)}
.the-da:hover .anh{transform:scale(1.06)}

.the-bv{
  background:#fff;border:1px solid var(--xam-vien);border-radius:var(--bo-goc);overflow:hidden;
  display:flex;flex-direction:column;transition:all var(--chuyen)
}
.the-bv:hover{transform:translateY(-5px);box-shadow:var(--bong-hover)}
.the-bv .anh{aspect-ratio:16/9}
.the-bv .noi-dung{padding:20px;display:flex;flex-direction:column;flex:1}
.the-bv .ngay{font-size:.8rem;color:var(--xam-chu);margin-bottom:8px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.the-bv .ngay .chuyen-muc{color:var(--do);font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.73rem}
.the-bv h3{font-size:1.04rem;margin-bottom:10px}
.the-bv h3 a:hover{color:var(--do)}
.the-bv p{font-size:.9rem;color:var(--xam-chu);flex:1}
.the-bv .doc-tiep{font-weight:600;color:var(--do);font-size:.9rem}

/* ============================================================
   KHỐI 2 CỘT
   ============================================================ */
.hai-cot{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.hai-cot .anh{border-radius:var(--bo-goc);aspect-ratio:4/3}
.dsach-tich{list-style:none;padding:0;margin:0 0 26px}
.dsach-tich li{position:relative;padding-left:34px;margin-bottom:12px;color:var(--xam-chu)}
.dsach-tich li::before{
  content:"✓";position:absolute;left:0;top:1px;width:22px;height:22px;border-radius:50%;
  background:var(--do-nhat);color:var(--do);font-size:.78rem;font-weight:700;display:grid;place-items:center
}
.section--xanh .dsach-tich li{color:#CFD2ED}
.section--xanh .dsach-tich li::before{background:rgba(222,33,39,.22);color:#ff8a8f}

/* ---------- Lĩnh vực / dịch vụ ---------- */
.the-dv{
  background:#fff;border-radius:var(--bo-goc);padding:30px;border:1px solid var(--xam-vien);
  transition:all var(--chuyen);height:100%
}
.the-dv:hover{transform:translateY(-6px);box-shadow:var(--bong-hover);border-color:var(--do)}
.the-dv .icon{
  width:56px;height:56px;border-radius:14px;background:var(--do-nhat);color:var(--do);
  display:grid;place-items:center;font-size:1.5rem;margin-bottom:18px
}
.the-dv p{color:var(--xam-chu);font-size:.93rem}
.the-dv ul{padding-left:18px;color:var(--xam-chu);font-size:.9rem;margin-bottom:0}
.the-dv ul li{margin-bottom:6px}

/* ---------- Quy trình ---------- */
.quy-trinh{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:bd}
.quy-trinh .buoc{text-align:center;position:relative;padding:0 6px}
.quy-trinh .buoc::before{
  counter-increment:bd;content:counter(bd,decimal-leading-zero);
  display:grid;place-items:center;width:58px;height:58px;margin:0 auto 16px;border-radius:50%;
  background:#fff;border:2px solid var(--do);color:var(--do);font-weight:800;font-size:1.05rem;position:relative;z-index:2
}
.quy-trinh .buoc::after{
  content:"";position:absolute;top:29px;left:calc(50% + 36px);right:calc(-50% + 36px);
  border-top:2px dashed var(--xam-vien)
}
.quy-trinh .buoc:last-child::after{display:none}
.quy-trinh h4{font-size:1rem;margin-bottom:6px}
.quy-trinh p{font-size:.86rem;color:var(--xam-chu);margin:0}

/* ---------- Cảm nhận khách hàng ---------- */
.the-cn{background:#fff;border-radius:var(--bo-goc);padding:28px;box-shadow:var(--bong);height:100%;display:flex;flex-direction:column}
.the-cn .sao{color:var(--vang);margin-bottom:12px;letter-spacing:2px}
.the-cn p{font-style:italic;color:var(--chu);flex:1}
.the-cn .nguoi{display:flex;align-items:center;gap:12px;margin-top:16px}
.the-cn .avt{width:46px;height:46px;border-radius:50%;background:var(--xanh);color:#fff;display:grid;place-items:center;font-weight:700;flex-shrink:0}
.the-cn .nguoi b{display:block;font-size:.95rem;color:var(--xanh)}
.the-cn .nguoi span{font-size:.82rem;color:var(--xam-chu)}

/* ---------- Đối tác ---------- */
.doi-tac{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;align-items:center}
.doi-tac .o{
  background:#fff;border:1px solid var(--xam-vien);border-radius:var(--bo-goc-nho);height:82px;
  display:grid;place-items:center;font-weight:700;color:var(--xam-chu);letter-spacing:.04em;
  transition:all var(--chuyen);font-size:.95rem;text-align:center;padding:6px
}
.doi-tac .o:hover{border-color:var(--do);color:var(--do)}
.doi-tac{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.doi-tac .o{padding:14px 18px}
.doi-tac .o img,.logo-hang{
  height:34px;width:auto;max-width:100%;object-fit:contain;
  filter:grayscale(1);opacity:.7;transition:filter var(--chuyen),opacity var(--chuyen)
}
.doi-tac .o:hover img{filter:none;opacity:1}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(115deg,var(--xanh-dam) 0%,var(--xanh) 48%,#8e1519 170%);color:#fff;border-radius:var(--bo-goc);padding:52px;text-align:center}
.cta h2{color:#fff}
.cta p{color:#CFD2ED;max-width:660px;margin:0 auto 26px}
.cta-nut{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ============================================================
   BANNER TRANG TRONG
   ============================================================ */
.banner{position:relative;padding:66px 0;background:var(--xanh);overflow:hidden}
.banner .anh{position:absolute;inset:0;opacity:.4}
.banner::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,28,68,.92),rgba(24,28,68,.55))}
.banner .wrap{position:relative;z-index:2}
.banner h1{color:#fff;margin-bottom:10px}
.duong-dan{font-size:.88rem;color:#A9AED8}
.duong-dan a:hover{color:#fff}
.duong-dan span{margin:0 8px;opacity:.5}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{background:var(--xanh-dam);color:#9DA2CB;font-size:.92rem;padding-top:60px}
.footer h4{color:#fff;font-size:1rem;margin-bottom:18px;position:relative;padding-bottom:12px}
.footer h4::after{content:"";position:absolute;left:0;bottom:0;width:38px;height:3px;background:var(--do);border-radius:2px}
.footer a:hover{color:#fff}
.footer-luoi{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px}
.footer .logo{color:#fff;margin-bottom:16px}
.footer .logo small{color:#7F84AE}
.footer ul{list-style:none;padding:0;margin:0}
.footer ul li{margin-bottom:10px}
.footer .tt li{display:flex;gap:10px;align-items:flex-start}
.footer .tt li i{color:var(--do);font-style:normal;flex-shrink:0}
.bo-cong-thuong{display:flex;gap:12px;align-items:center;margin-top:18px;flex-wrap:wrap}
.bo-cong-thuong .huy-hieu{
  border:1px solid rgba(255,255,255,.22);border-radius:var(--bo-goc-nho);padding:8px 14px;
  font-size:.76rem;line-height:1.4;color:#C6C9E6;background:rgba(255,255,255,.04)
}
.bo-cong-thuong .huy-hieu b{color:#fff;display:block}
.footer-duoi{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:.86rem}
.footer-duoi .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
.footer-duoi .lk-cs{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- Nút liên hệ nổi ---------- */
.lien-he-noi{position:fixed;right:18px;bottom:18px;z-index:80;display:flex;flex-direction:column;gap:10px}
.lien-he-noi a{
  width:50px;height:50px;border-radius:50%;display:grid;place-items:center;color:#fff;
  font-size:1.1rem;font-weight:700;box-shadow:0 6px 20px rgba(0,0,0,.25);transition:transform var(--chuyen)
}
.lien-he-noi a:hover{transform:scale(1.1)}
.lh-goi{background:var(--do);animation:rung 1.6s infinite}
.lh-zalo{background:#0068ff;font-size:.78rem}
.lh-len{background:var(--xanh)}
@keyframes rung{0%,100%{box-shadow:0 0 0 0 rgba(222,33,39,.55)}70%{box-shadow:0 0 0 14px rgba(222,33,39,0)}}

/* ---------- Hiệu ứng xuất hiện ---------- */
.hien{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
html:not(.js-bat) .hien{opacity:1;transform:none}   /* JS tắt thì vẫn hiện đầy đủ */
.hien.da-hien{opacity:1;transform:none}

/* ============================================================
   TRANG CHI TIẾT
   ============================================================ */
.ct-luoi{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:start}
.ct-anh-lon{border-radius:var(--bo-goc);aspect-ratio:4/3}
.ct-anh-nho{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.ct-anh-nho .anh{aspect-ratio:1/1;border-radius:var(--bo-goc-nho);cursor:pointer;border:2px solid transparent}
.ct-anh-nho .anh:hover{border-color:var(--do)}
.bang-ts{width:100%;border-collapse:collapse;font-size:.93rem;margin-bottom:24px}
.bang-ts th,.bang-ts td{padding:11px 14px;border:1px solid var(--xam-vien);text-align:left;vertical-align:top}
.bang-ts th{background:var(--xam-nen);width:42%;font-weight:600;color:var(--xanh)}
.hop-lien-he{
  background:var(--do-nhat);border:1px dashed var(--do);border-radius:var(--bo-goc);
  padding:22px;margin-bottom:24px
}
.hop-lien-he .gia{font-size:1.2rem;font-weight:800;color:var(--do);margin-bottom:6px}
.hop-lien-he p{font-size:.9rem;color:var(--xam-chu);margin-bottom:16px}
.hop-lien-he .nhom-nut{display:flex;gap:10px;flex-wrap:wrap}

.tab-ct{display:flex;gap:4px;border-bottom:2px solid var(--xam-vien);margin-bottom:26px;flex-wrap:wrap}
.tab-ct button{
  padding:13px 24px;background:none;border:0;border-bottom:3px solid transparent;margin-bottom:-2px;
  font-family:inherit;font-weight:600;font-size:.95rem;color:var(--xam-chu);cursor:pointer;transition:all var(--chuyen)
}
.tab-ct button:hover{color:var(--do)}
.tab-ct button.active{color:var(--do);border-bottom-color:var(--do)}
.noi-dung-tab{display:none}
.noi-dung-tab.active{display:block}

/* ---------- Bài viết chi tiết ---------- */
.bai-viet-ct{display:grid;grid-template-columns:1fr 320px;gap:44px;align-items:start}
.noi-dung-bai{font-size:1.02rem;line-height:1.85}
.noi-dung-bai h2{margin-top:1.8em;font-size:1.45rem}
.noi-dung-bai h3{margin-top:1.5em}
.noi-dung-bai blockquote{
  margin:1.6em 0;padding:18px 24px;border-left:4px solid var(--do);background:var(--xam-nen);
  border-radius:0 var(--bo-goc-nho) var(--bo-goc-nho) 0;font-style:italic;color:var(--chu)
}
.noi-dung-bai blockquote p:last-child{margin-bottom:0}
.cot-ben .hop{background:#fff;border:1px solid var(--xam-vien);border-radius:var(--bo-goc);padding:22px;margin-bottom:22px}
.cot-ben h4{font-size:1.02rem;border-bottom:2px solid var(--do);padding-bottom:10px;margin-bottom:16px}
.cot-ben ul{list-style:none;padding:0;margin:0}
.cot-ben ul li{padding:9px 0;border-bottom:1px dashed var(--xam-vien);font-size:.92rem}
.cot-ben ul li:last-child{border-bottom:0}
.cot-ben ul li a:hover{color:var(--do)}

/* ---------- Form ---------- */
.form-lh{background:#fff;border-radius:var(--bo-goc);padding:32px;box-shadow:var(--bong)}
.hang-form{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.o-form{margin-bottom:16px}
.o-form label{display:block;font-size:.88rem;font-weight:600;margin-bottom:6px;color:var(--xanh)}
.o-form input,.o-form select,.o-form textarea{
  width:100%;padding:12px 14px;border:1px solid var(--xam-vien);border-radius:var(--bo-goc-nho);
  font-family:inherit;font-size:.95rem;transition:border-color var(--chuyen);background:#fff;color:var(--chu)
}
.o-form input:focus,.o-form select:focus,.o-form textarea:focus{outline:none;border-color:var(--do)}
.o-form textarea{min-height:120px;resize:vertical}

/* ---------- Nội dung chính sách ---------- */
.van-ban{max-width:900px;margin:0 auto;font-size:1rem;line-height:1.85}
.van-ban h2{margin-top:1.8em;font-size:1.3rem;padding-bottom:10px;border-bottom:1px solid var(--xam-vien)}
.van-ban h3{margin-top:1.4em;font-size:1.08rem;color:var(--do)}
.van-ban ul,.van-ban ol{margin-bottom:1.2em}
.van-ban li{margin-bottom:8px}
.van-ban table{width:100%;border-collapse:collapse;margin-bottom:1.4em;font-size:.94rem}
.van-ban th,.van-ban td{border:1px solid var(--xam-vien);padding:10px 13px;text-align:left;vertical-align:top}
.van-ban th{background:var(--xam-nen);color:var(--xanh)}
.ghi-chu{background:var(--do-nhat);border-left:4px solid var(--do);padding:16px 20px;border-radius:0 8px 8px 0;margin:1.4em 0}
.ghi-chu p:last-child{margin-bottom:0}

.muc-luc{background:var(--xam-nen);border-radius:var(--bo-goc);padding:24px 28px;margin-bottom:36px}
.muc-luc h4{margin-bottom:12px}
.muc-luc ol{margin:0;padding-left:20px}
.muc-luc li{margin-bottom:6px}
.muc-luc a:hover{color:var(--do)}

/* ---------- Phân trang ---------- */
.phan-trang{display:flex;gap:8px;justify-content:center;margin-top:44px;flex-wrap:wrap}
.phan-trang a,.phan-trang span{
  min-width:42px;height:42px;display:grid;place-items:center;border-radius:var(--bo-goc-nho);
  border:1px solid var(--xam-vien);font-weight:600;font-size:.92rem;padding:0 12px
}
.phan-trang a:hover{border-color:var(--do);color:var(--do)}
.phan-trang .hien-tai{background:var(--do);border-color:var(--do);color:#fff}

/* ---------- Bộ lọc ---------- */
.bo-loc{display:flex;gap:12px;flex-wrap:wrap;align-items:center;background:#fff;border:1px solid var(--xam-vien);
  border-radius:var(--bo-goc);padding:16px 20px;margin-bottom:32px}
.bo-loc select,.bo-loc input{
  padding:10px 14px;border:1px solid var(--xam-vien);border-radius:var(--bo-goc-nho);font-family:inherit;font-size:.9rem;color:var(--chu)
}
.bo-loc .ket-qua{margin-left:auto;font-size:.9rem;color:var(--xam-chu)}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1024px){
  .luoi-4{grid-template-columns:repeat(2,1fr)}
  .luoi-3{grid-template-columns:repeat(2,1fr)}
  .footer-luoi{grid-template-columns:1fr 1fr}
  .doi-tac{grid-template-columns:repeat(3,1fr)}
  .quy-trinh{grid-template-columns:repeat(3,1fr);gap:30px}
  .quy-trinh .buoc::after{display:none}
  .bai-viet-ct{grid-template-columns:1fr}
  .ct-luoi{grid-template-columns:1fr}
  .menu{display:none}
  .nut-menu{display:block}
  .header .nut{display:none}
  .menu.mo{
    display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;
    padding:12px;box-shadow:var(--bong-hover);gap:0;max-height:70vh;overflow:auto;margin:0;z-index:70
  }
  .menu.mo .menu-con{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;padding-left:14px;min-width:0}
}
@media (max-width:700px){
  .section{padding:48px 0}
  .luoi-4,.luoi-3,.luoi-2{grid-template-columns:1fr}
  .hai-cot{grid-template-columns:1fr;gap:30px}
  .dai-so .wrap{grid-template-columns:repeat(2,1fr);gap:26px}
  .dai-so .o:nth-child(2n){border-right:0}
  .footer-luoi{grid-template-columns:1fr;gap:30px}
  .doi-tac{grid-template-columns:repeat(2,1fr)}
  .quy-trinh{grid-template-columns:1fr}
  .hang-form{grid-template-columns:1fr}
  .hero{min-height:520px}
  .hero-the{padding:28px}
  .cta{padding:34px 22px}
  .thanh-top .mxh{display:none}
  .ct-anh-nho{grid-template-columns:repeat(4,1fr)}
}


/* ============================================================
   BỔ SUNG UX — dải tin cậy, bộ chọn nhóm, tìm kiếm, thanh CTA đáy
   ============================================================ */

/* ---------- Dải tin cậy ngay dưới hero ---------- */
.tin-cay{background:#fff;border-bottom:1px solid var(--xam-vien)}
.tin-cay .wrap{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;
  padding-top:16px;padding-bottom:16px;font-size:.9rem;color:var(--xam-chu)}
.tin-cay span{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.tin-cay b{color:var(--xanh);font-weight:700}
.tin-cay i{font-style:normal;color:var(--do)}

/* ---------- Bộ chọn loại công trình ---------- */
.chon-nhom{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.chon-nhom a{
  background:#fff;border:1px solid var(--xam-vien);border-radius:var(--bo-goc);
  padding:24px 18px;text-align:center;transition:all var(--chuyen);display:block
}
.chon-nhom a:hover{transform:translateY(-6px);box-shadow:var(--bong-hover);border-color:var(--do)}
.chon-nhom .icon{
  width:56px;height:56px;margin:0 auto 14px;border-radius:16px;background:var(--do-nhat);
  color:var(--do);display:grid;place-items:center;font-size:1.5rem
}
.chon-nhom b{display:block;color:var(--xanh);font-size:1rem;margin-bottom:6px}
.chon-nhom span{font-size:.85rem;color:var(--xam-chu);line-height:1.5}

/* ---------- Ô tìm kiếm trên trang danh mục ---------- */
.thanh-tim{
  display:flex;gap:12px;flex-wrap:wrap;align-items:center;background:#fff;
  border:1px solid var(--xam-vien);border-radius:99px;padding:8px 8px 8px 20px;
  max-width:760px;margin:0 auto 26px;box-shadow:var(--bong)
}
.thanh-tim input{
  flex:1;min-width:180px;border:0;outline:none;font-family:inherit;font-size:.98rem;
  padding:10px 0;color:var(--chu);background:transparent
}
.thanh-tim input::placeholder{color:#9A9DB6}
.thanh-tim select{
  border:0;outline:none;font-family:inherit;font-size:.92rem;color:var(--xanh);
  background:var(--xam-nen);border-radius:99px;padding:10px 16px;cursor:pointer;font-weight:600
}
.thanh-tim .icon-tim{color:var(--xam-chu);font-size:1.05rem}
.ket-qua-tim{text-align:center;color:var(--xam-chu);font-size:.92rem;margin:-10px 0 26px}
.khong-thay{
  text-align:center;padding:56px 20px;color:var(--xam-chu);
  background:var(--xam-nen);border-radius:var(--bo-goc);grid-column:1/-1
}
.khong-thay b{display:block;color:var(--xanh);font-size:1.1rem;margin-bottom:8px}

/* ---------- Thanh CTA cố định đáy màn hình (điện thoại) ---------- */
.thanh-day{display:none}
@media (max-width:760px){
  .thanh-day{
    display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:0;position:fixed;left:0;right:0;bottom:0;
    z-index:90;background:#fff;box-shadow:0 -4px 20px rgba(42,50,121,.16);
    padding-bottom:env(safe-area-inset-bottom)
  }
  .thanh-day a{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    padding:11px 6px;font-size:.76rem;font-weight:600;color:var(--xanh);border-right:1px solid var(--xam-vien)
  }
  .thanh-day a:last-child{border-right:0;background:var(--do);color:#fff}
  .thanh-day a i{font-style:normal;font-size:1.15rem;line-height:1}
  body{padding-bottom:62px}
  .lien-he-noi{bottom:74px;right:12px}
  .lien-he-noi .lh-goi,.lien-he-noi .lh-zalo{display:none}   /* đã có ở thanh đáy */
}

@media (max-width:1024px){ .chon-nhom{grid-template-columns:repeat(3,1fr)} }
@media (max-width:700px){
  .chon-nhom{grid-template-columns:repeat(2,1fr);gap:12px}
  .chon-nhom a{padding:18px 12px}
  .chon-nhom .icon{width:46px;height:46px;font-size:1.25rem;margin-bottom:10px}
  .tin-cay .wrap{gap:10px;font-size:.82rem}
  .thanh-tim{border-radius:var(--bo-goc);padding:14px}
  .thanh-tim input{width:100%}
}


/* ============================================================
   DỰ TOÁN THI CÔNG — du-toan-thi-cong.html
   ============================================================ */

/* Menu có 7 mục: màn hình vừa thì thu gọn khoảng cách cho khỏi tràn */
@media (max-width:1280px) and (min-width:1025px){
  .header .wrap{gap:18px}
  .menu>li>a{padding:10px 10px;font-size:.9rem}
  .menu .co-con>a::after{margin-left:4px}
}

.dt-luoi{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:32px;align-items:start}
.form-dt{padding:36px}
.form-dt .tieu-de p{margin-top:4px}

/* Số thứ tự nhóm tự đếm — nhóm bị ẩn thì các nhóm sau tự lùi số */
.form-dt{counter-reset:nhom-dt}
.nhom-dt{border:0;padding:0;margin:0 0 26px;min-width:0;counter-increment:nhom-dt}
.nhom-dt legend b::before{content:counter(nhom-dt)}
.an-chu{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Nhu cầu quan tâm: 4 nút chọn dạng viên thuốc */
.chon-nhu-cau{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.chon-nhu-cau label{position:relative;cursor:pointer;margin:0}
.chon-nhu-cau input{position:absolute;opacity:0;width:1px;height:1px}
.chon-nhu-cau span{
  display:flex;align-items:center;justify-content:center;text-align:center;height:100%;
  padding:11px 10px;border:2px solid var(--xam-vien);border-radius:var(--bo-goc-nho);
  font-size:.88rem;font-weight:600;color:var(--xanh);background:#fff;transition:all var(--chuyen);line-height:1.35
}
.chon-nhu-cau label:hover span{border-color:#f3a9ac}
.chon-nhu-cau input:checked + span{border-color:var(--do);background:var(--do-nhat);color:var(--do)}
.chon-nhu-cau input:focus-visible + span{outline:3px solid rgba(222,33,39,.35);outline-offset:2px}
.nhom-dt legend{
  display:flex;align-items:center;gap:10px;padding:0;margin-bottom:14px;
  font-weight:700;font-size:1.05rem;color:var(--xanh)
}
.nhom-dt legend b{
  width:28px;height:28px;border-radius:50%;background:var(--do);color:#fff;
  display:grid;place-items:center;font-size:.85rem;flex:none
}

/* Ô có đơn vị đứng sau (đ/tháng, m²) */
.o-don-vi{position:relative}
.o-don-vi input{padding-right:78px}
.o-don-vi span{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-size:.86rem;color:var(--xam-chu);pointer-events:none
}
.o-form .goi-y{display:block;font-size:.8rem;color:var(--xam-chu);margin-top:6px;line-height:1.5}
.form-dt .loi{display:block;font-size:.82rem;color:var(--do);font-weight:600;margin-top:6px}
.form-dt .loi:empty{display:none}
.o-form--loi input{border-color:var(--do);background:var(--do-nhat)}

/* Tỷ lệ dùng điện ngày / đêm */
.ty-le-dt{background:var(--xam-nen);border-radius:var(--bo-goc-nho);padding:16px 18px}
.ty-le-so{display:flex;justify-content:space-between;gap:12px;font-size:.92rem;margin-bottom:10px}
.ty-le-so b{font-size:1.15rem}
.ty-le-so .ngay b{color:#c97d00}
.ty-le-so .dem b{color:var(--xanh)}
.ty-le-thanh{height:10px;border-radius:99px;background:var(--xanh);overflow:hidden;margin-bottom:6px}
.ty-le-thanh i{display:block;height:100%;background:var(--vang);transition:width .15s}
.ty-le-dt input[type=range]{width:100%;accent-color:var(--do);margin:4px 0 2px;cursor:pointer}

/* Chọn giải pháp */
.chon-gp{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.chon-gp label{position:relative;cursor:pointer}
.chon-gp input{position:absolute;opacity:0;width:1px;height:1px}
.the-gp{
  display:block;height:100%;border:2px solid var(--xam-vien);border-radius:var(--bo-goc);
  padding:18px 18px 16px;transition:all var(--chuyen);background:#fff
}
.the-gp i{font-style:normal;font-size:1.5rem;display:block;margin-bottom:6px}
.the-gp b{display:block;color:var(--xanh);font-size:1.02rem;margin-bottom:4px}
.the-gp em{font-style:normal;font-size:.85rem;color:var(--xam-chu);line-height:1.5;display:block}
.chon-gp label:hover .the-gp{border-color:#f3a9ac}
.chon-gp input:checked + .the-gp{border-color:var(--do);background:var(--do-nhat);box-shadow:0 6px 18px rgba(222,33,39,.14)}
.chon-gp input:focus-visible + .the-gp{outline:3px solid rgba(222,33,39,.35);outline-offset:2px}

.dong-y{display:flex;gap:10px;align-items:flex-start;font-size:.88rem;color:var(--xam-chu);cursor:pointer}
.dong-y input{width:18px;height:18px;margin-top:3px;accent-color:var(--do);flex:none}
.dong-y a{color:var(--do);font-weight:600}
.nut-gui-dt{width:100%;margin-top:20px;padding:15px 28px;font-size:1rem}
.luu-y-dt{font-size:.8rem;color:var(--xam-chu);margin:12px 0 0;text-align:center}

/* Kết quả sau khi gửi */
.ket-qua-dt{margin-top:24px;border:2px solid var(--xanh);border-radius:var(--bo-goc);padding:22px 24px}
.ket-qua-dt h3{margin-bottom:12px}
.ket-qua-dt table{width:100%;border-collapse:collapse;font-size:.92rem;margin-bottom:14px}
.ket-qua-dt th,.ket-qua-dt td{padding:8px 10px;border-bottom:1px solid var(--xam-vien);text-align:left;vertical-align:top}
.ket-qua-dt th{width:40%;color:var(--xam-chu);font-weight:600}
.ket-qua-dt .xem-thu{background:#fff8e6;border-left:4px solid var(--vang);padding:12px 14px;border-radius:0 8px 8px 0;font-size:.88rem;margin:0}

/* Cột bên */
.dt-ben{display:grid;gap:20px;position:sticky;top:112px}
.the-ben{background:#fff;border-radius:var(--bo-goc);padding:26px;box-shadow:var(--bong)}
.the-ben .dsach-tich{margin-bottom:0}
.the-ben--xanh{background:var(--xanh);color:#CFD2ED}
.the-ben--xanh h3{color:#fff}
.the-ben .nhom-nut{display:flex;gap:10px;flex-wrap:wrap}

@media (max-width:1024px){
  .dt-luoi{grid-template-columns:1fr}
  .dt-ben{position:static}
}
@media (max-width:1180px){
  .chon-nhu-cau{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:700px){
  .form-dt{padding:24px 18px}
  .chon-gp{grid-template-columns:1fr}
}

/* ===== Ban do Google Maps nhung ===== */
.ban-do{width:100%;background:var(--xam-vien);border:1px solid var(--xam-vien)}
.ban-do-chu{margin-top:14px;color:var(--xam-chu);font-size:.95rem}