/* Màu lấy đúng từ logo Thịnh Phú */
:root{
  --xanh:#1E3B79;        /* xanh đậm logo */
  --xanh-sau:#142A58;
  --xanh-nhat:#A0CDEC;   /* xanh nhạt logo */
  --xanh-nen:#EEF5FB;
  --trang:#FFFFFF;
  --chu:#1B2640;
  --chu-phu:#56627A;
  --vien:#D9E4F0;
  --font-tieude:"Barlow Condensed","Arial Narrow",Arial,sans-serif;
  --font-chu:"Be Vietnam Pro","Segoe UI",Roboto,Arial,sans-serif;
  --rong:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;font-family:var(--font-chu);color:var(--chu);background:var(--trang);font-size:16px;line-height:1.65}
img{max-width:100%;display:block}
a{color:var(--xanh);text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--xanh-nhat);outline-offset:2px}
h1,h2,h3{font-family:var(--font-tieude);font-weight:700;line-height:1.15;margin:0 0 .5em;color:var(--xanh)}
.khung{max-width:var(--rong);margin:0 auto;padding:0 20px}
.an{display:none!important}

/* ---------- Ảnh thay thế khi chưa có ảnh ---------- */
.anh{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--xanh) 0%,#2E5AA8 60%,var(--xanh-nhat) 100%)}
.anh img{width:100%;height:100%;object-fit:cover}
.anh.trong::after{content:"";position:absolute;inset:0;background:url(../images/logo-trang.png) center/38% no-repeat;opacity:.18}

/* ---------- Thanh trên ---------- */
.thanh-tren{background:var(--xanh-sau);color:#cfe0f3;font-size:14px}
.thanh-tren .khung{display:flex;justify-content:space-between;gap:16px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap}
.thanh-tren a{color:#fff}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:50;background:var(--trang);border-bottom:3px solid var(--xanh)}
.header .khung{display:flex;align-items:center;gap:20px;min-height:78px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo img{height:54px;width:auto}
.logo b{display:block;font-family:var(--font-tieude);font-size:26px;letter-spacing:.04em;color:var(--xanh);line-height:1}
.logo small{display:block;font-size:12px;color:var(--chu-phu);white-space:nowrap}
.menu{margin-left:auto}
.menu>ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.menu li{position:relative}
.menu>ul>li>a{display:block;white-space:nowrap;padding:26px 10px;font-weight:600;font-size:15px;color:var(--chu)}
.menu>ul>li>a:hover,.menu>ul>li:hover>a{color:var(--xanh)}
.menu .co-con>a::after{content:"";display:inline-block;margin-left:6px;border:4px solid transparent;border-top-color:currentColor;transform:translateY(2px)}
.menu ul ul{list-style:none;margin:0;padding:8px 0;position:absolute;top:100%;left:0;min-width:230px;background:#fff;border-top:3px solid var(--xanh);box-shadow:0 12px 28px rgba(30,59,121,.15);opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s}
.menu li:hover>ul,.menu li:focus-within>ul{opacity:1;visibility:visible;transform:none}
.menu ul ul a{display:block;padding:9px 18px;color:var(--chu);font-size:15px}
.menu ul ul a:hover{background:var(--xanh-nen);color:var(--xanh)}
.nut-hotline{flex-shrink:0;background:var(--xanh);color:#fff;font-weight:700;padding:10px 18px;border-radius:40px;white-space:nowrap}
.nut-hotline:hover{background:var(--xanh-sau)}
.nut-menu{display:none;margin-left:auto;background:none;border:0;padding:8px;cursor:pointer}
.nut-menu span{display:block;width:26px;height:3px;background:var(--xanh);margin:5px 0}

/* ---------- Hero: đáy vát hình thoi như chân logo ---------- */
.hero{position:relative;height:clamp(420px,72vh,680px);clip-path:polygon(0 0,100% 0,100% 86%,50% 100%,0 86%);background:var(--xanh)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .9s}
.slide.hien{opacity:1}
.slide .anh{position:absolute;inset:0}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,42,88,.88) 0%,rgba(20,42,88,.55) 45%,rgba(20,42,88,.05) 80%)}
.slide-chu{position:absolute;z-index:2;left:0;right:0;top:50%;transform:translateY(-58%)}
.slide-chu h2{color:#fff;font-size:clamp(36px,5.4vw,68px);max-width:14ch;margin-bottom:.3em}
.slide-chu p{color:#dbe8f6;font-size:clamp(16px,1.6vw,20px);max-width:44ch;margin:0 0 28px}
.nut{display:inline-block;padding:13px 28px;border-radius:40px;font-weight:700;border:2px solid var(--xanh);background:var(--xanh);color:#fff;cursor:pointer;font-size:16px;font-family:inherit}
.nut:hover{background:var(--xanh-sau);border-color:var(--xanh-sau)}
.nut.vien{background:transparent;color:var(--xanh)}
.nut.vien:hover{background:var(--xanh);color:#fff}
.nut.sang{background:#fff;border-color:#fff;color:var(--xanh)}
.cham{position:absolute;z-index:3;bottom:19%;left:50%;transform:translateX(-50%);display:flex;gap:10px}
.cham button{width:34px;height:5px;border:0;background:rgba(255,255,255,.4);cursor:pointer;padding:0}
.cham button.hien{background:var(--xanh-nhat)}

/* ---------- Khối chung ---------- */
.khoi{padding:80px 0}
.khoi.nen{background:var(--xanh-nen)}
.dau-khoi{text-align:center;max-width:680px;margin:0 auto 44px}
.dau-khoi h2{font-size:clamp(32px,3.8vw,46px)}
.dau-khoi p{color:var(--chu-phu);margin:0}

/* Giới thiệu */
.gioi-thieu{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.gioi-thieu h1{font-size:clamp(30px,3.4vw,42px)}
.gioi-thieu p{color:var(--chu-phu);margin:0 0 28px}
.luoi-anh{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.luoi-anh .anh{aspect-ratio:4/3;border-radius:4px}
.luoi-anh .anh:nth-child(1){aspect-ratio:auto;grid-row:span 2}

/* Báo giá */
.bao-gia{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.bao-gia a{display:flex;align-items:center;min-height:96px;padding:20px 22px;background:#fff;border:1px solid var(--vien);border-left:6px solid var(--xanh);font-family:var(--font-tieude);font-size:22px;font-weight:700;color:var(--xanh);line-height:1.2;transition:background .2s,color .2s}
.bao-gia a:hover{background:var(--xanh);color:#fff}

/* Dự án */
.loc{display:flex;justify-content:center;gap:8px;margin-bottom:32px;flex-wrap:wrap}
.loc button{font:inherit;font-weight:600;padding:8px 20px;border-radius:40px;border:1px solid var(--vien);background:#fff;color:var(--chu);cursor:pointer}
.loc button[aria-pressed="true"]{background:var(--xanh);border-color:var(--xanh);color:#fff}
.du-an{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.the-du-an{background:#fff;border:1px solid var(--vien)}
.the-du-an .anh{aspect-ratio:4/3;display:block}
.the-du-an .anh img{transition:transform .5s}
.the-du-an:hover .anh img{transform:scale(1.05)}
.nhan{position:absolute;z-index:2;top:14px;left:14px;padding:4px 12px;font-size:13px;font-weight:600;background:var(--xanh-nhat);color:var(--xanh-sau)}
.nhan.xong{background:#fff;color:var(--xanh)}
.the-du-an .noi-dung{padding:18px 20px 22px}
.the-du-an h3{font-size:24px;margin-bottom:10px}
.the-du-an h3 a{color:var(--xanh)}
.the-du-an dl{margin:0;font-size:15px;display:grid;grid-template-columns:auto 1fr;gap:4px 10px}
.the-du-an dt{color:var(--chu-phu)}
.the-du-an dd{margin:0}

/* Thành tựu */
.thanh-tuu{background:var(--xanh);color:#fff;padding:64px 0}
.thanh-tuu h2{color:#fff;text-align:center;font-size:clamp(30px,3.4vw,42px);margin-bottom:36px}
.so-lieu{display:grid;grid-template-columns:repeat(var(--n,5),1fr);border-top:1px solid rgba(160,205,236,.35)}
.so-lieu div{padding:26px 16px 0;text-align:center;border-left:1px solid rgba(160,205,236,.35)}
.so-lieu div:first-child{border-left:0}
.so-lieu b{display:block;font-family:var(--font-tieude);font-size:clamp(44px,5vw,64px);line-height:1;color:var(--xanh-nhat)}
.so-lieu span{color:#dbe8f6}

/* Mẫu thiết kế */
.mau{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mau a{position:relative;display:block}
.mau .anh{aspect-ratio:5/6}
.mau span{position:absolute;z-index:2;left:0;right:0;bottom:0;padding:40px 22px 20px;background:linear-gradient(transparent,rgba(20,42,88,.92));color:#fff;font-family:var(--font-tieude);font-size:28px;font-weight:700}

/* Nhận xét */
.nhan-xet{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.nhan-xet figure{margin:0;background:#fff;padding:28px;border-top:4px solid var(--xanh-nhat)}
.nhan-xet blockquote{margin:0 0 20px;font-size:16px}
.nhan-xet figcaption{display:flex;align-items:center;gap:12px;font-weight:700;color:var(--xanh)}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--xanh);color:#fff;display:grid;place-items:center;font-family:var(--font-tieude);font-size:22px;overflow:hidden;flex-shrink:0}
.avatar img{width:100%;height:100%;object-fit:cover}
.video{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-top:32px}
.video iframe{width:100%;aspect-ratio:16/9;border:0}

/* Hình ảnh */
.thu-vien{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.thu-vien button{padding:0;border:0;cursor:zoom-in;background:none}
.thu-vien .anh{aspect-ratio:1}
.hop-anh{position:fixed;inset:0;z-index:100;background:rgba(10,20,45,.92);display:grid;place-items:center;padding:20px}
.hop-anh img{max-height:82vh;width:auto}
.hop-anh p{color:#fff;text-align:center;margin:12px 0 0}
.hop-anh button{position:absolute;top:16px;right:20px;background:none;border:0;color:#fff;font-size:40px;cursor:pointer;line-height:1}

/* Kêu gọi */
.keu-goi{background:linear-gradient(120deg,var(--xanh-sau),var(--xanh));color:#fff;padding:60px 0}
.keu-goi .khung{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.keu-goi h2{color:#fff;font-size:clamp(30px,3.4vw,42px);margin-bottom:.2em}
.keu-goi p{margin:0;color:#dbe8f6}
.keu-goi .so{display:block;font-family:var(--font-tieude);font-size:40px;font-weight:700;color:#fff;line-height:1.1}

/* Đối tác */
.doi-tac{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;align-items:center}
.doi-tac div{height:84px;border:1px solid var(--vien);display:grid;place-items:center;padding:12px;background:#fff;color:var(--chu-phu);font-weight:600;text-align:center}
.doi-tac img{max-height:60px;width:auto;filter:grayscale(1);opacity:.75;transition:.2s}
.doi-tac div:hover img{filter:none;opacity:1}

/* Liên hệ */
.lien-he{display:grid;grid-template-columns:1fr 1.1fr;gap:48px}
.lien-he ul{list-style:none;padding:0;margin:0 0 24px}
.lien-he li{padding:12px 0;border-bottom:1px solid var(--vien)}
.lien-he li b{display:block;font-size:14px;color:var(--chu-phu);font-weight:500}
.lien-he iframe{width:100%;height:240px;border:0}
.form{display:grid;gap:14px;align-self:start;align-content:start;background:#fff;padding:32px;border:1px solid var(--vien);border-top:5px solid var(--xanh)}
.form h3{font-size:28px}
.form label{font-weight:600;font-size:14px;display:grid;gap:6px}
.form input,.form select,.form textarea{font:inherit;padding:11px 14px;border:1px solid #C3D2E3;border-radius:4px;background:#fff;width:100%}
.form textarea{min-height:110px;resize:vertical}
.form .hai-cot{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.thong-bao{margin:0;padding:10px 14px;background:var(--xanh-nen);color:var(--xanh);font-weight:600}

/* ---------- Footer ---------- */
.footer{background:var(--xanh-sau);color:#c4d4e8;padding:64px 0 0;font-size:15px}
.footer .cot{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:40px}
.footer img.logo-f{width:150px;margin-bottom:14px}
.footer h4{font-family:var(--font-tieude);font-size:22px;color:#fff;margin:0 0 14px}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{padding:4px 0}
.footer a{color:#c4d4e8}
.footer a:hover{color:#fff}
.ban-quyen{margin-top:48px;border-top:1px solid rgba(160,205,236,.2);padding:18px 0;font-size:14px;text-align:center}

/* Nút liên hệ nổi */
.noi{position:fixed;right:18px;bottom:22px;z-index:60;display:grid;gap:10px;justify-items:end}
.noi a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:13px;box-shadow:0 6px 16px rgba(20,42,88,.3)}
.noi .goi{background:var(--xanh);animation:rung 2.4s infinite}
.noi a.zalo{width:auto;height:58px;border-radius:40px;padding:0 20px 0 6px;display:flex;align-items:center;gap:10px;background:#0068FF;font-size:15px;text-align:left;line-height:1.2}
.noi .zalo i{font-style:normal;width:46px;height:46px;border-radius:50%;background:#fff;color:#0068FF;display:grid;place-items:center;font-weight:800;font-size:13px}
.noi .zalo small{display:block;font-weight:500;font-size:12px;opacity:.9}
.noi .mess{background:#fff;color:var(--xanh);border:2px solid var(--xanh)}
.noi svg{width:24px;height:24px;fill:currentColor}
@keyframes rung{0%,86%,100%{box-shadow:0 0 0 0 rgba(30,59,121,.5)}93%{box-shadow:0 0 0 14px rgba(30,59,121,0)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ---------- Trang con ---------- */
.dau-trang{background:var(--xanh);color:#fff;padding:56px 0 64px;clip-path:polygon(0 0,100% 0,100% 82%,50% 100%,0 82%)}
.dau-trang h1{color:#fff;font-size:clamp(32px,4.4vw,52px);margin:0}
.duong-dan{font-size:14px;color:var(--xanh-nhat);margin-bottom:10px}
.duong-dan a{color:#fff}
.bai{max-width:820px;margin:0 auto;padding:48px 20px 80px}
.bai .anh-dau{aspect-ratio:16/8;margin-bottom:32px}
.bai h2{font-size:32px;margin-top:1.2em}
.bai img{margin:20px 0}
.bai table{width:100%;border-collapse:collapse;margin:20px 0}
.bai th{background:var(--xanh);color:#fff;text-align:left}
.bai th,.bai td{padding:12px 14px;border:1px solid var(--vien)}
.bai tr:nth-child(odd) td{background:var(--xanh-nen)}

/* ---------- Mobile ---------- */
@media (max-width:1280px){.logo small{display:none}}
@media (max-width:1140px){
  .nut-menu{display:block}
  .menu{position:fixed;top:0;left:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:90;overflow:auto;transform:translateX(-100%);transition:transform .25s;box-shadow:0 0 40px rgba(0,0,0,.2);margin:0}
  .menu.mo{transform:none}
  .menu>ul{flex-direction:column;padding:20px 0}
  .menu>ul>li>a{padding:12px 22px}
  .menu ul ul{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0 0 6px 16px}
  .nut-hotline{display:none}
  .phu-menu{position:fixed;inset:0;background:rgba(10,20,45,.5);z-index:49}
  .bao-gia{grid-template-columns:1fr 1fr}
  .so-lieu{grid-template-columns:repeat(2,1fr);row-gap:24px}
  .so-lieu div:nth-child(odd){border-left:0}
  .footer .cot{grid-template-columns:1fr 1fr}
  .doi-tac{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:760px){
  .khoi{padding:56px 0}
  .gioi-thieu,.lien-he{grid-template-columns:1fr;gap:32px}
  .du-an,.mau,.nhan-xet{grid-template-columns:1fr}
  .thu-vien{grid-template-columns:1fr 1fr}
  .so-lieu{grid-template-columns:1fr 1fr}
  .noi a.zalo span{display:none}
  .noi a.zalo{padding:0 6px}
  .so-lieu div{border-left:0}
  .footer .cot{grid-template-columns:1fr}
  .form .hai-cot{grid-template-columns:1fr}
  .thanh-tren .dia-chi{display:none}
  .logo small{display:none}
  .hero{clip-path:polygon(0 0,100% 0,100% 92%,50% 100%,0 92%)}
}
.bai .luu-y{background:var(--xanh-nen);border-left:5px solid var(--xanh);padding:14px 18px;font-size:15px}
.thanh-tuu .so-lieu b{white-space:nowrap}
.an-them{display:none}
.xem-them{text-align:center;margin:36px 0 0}
.thu-vien{grid-template-columns:repeat(5,1fr)}
@media (max-width:760px){.thu-vien{grid-template-columns:1fr 1fr}}
.mau-tk{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:24px 0}
.mau-tk figure{margin:0}.mau-tk img{margin:0;width:100%}
.chu-thich{font-size:14px;color:var(--chu-phu);font-style:italic}
.mau-tk figcaption{margin-top:6px;font-size:15px;color:var(--chu)}

.bao-gia a{flex-direction:column;align-items:flex-start;justify-content:center;gap:6px}
.bao-gia small{font-family:var(--font-chu);font-size:15px;font-weight:600;color:var(--chu-phu)}
.bao-gia a:hover small{color:var(--xanh-nhat)}
.tai-sao{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.tai-sao div{border-top:4px solid var(--xanh);padding-top:18px}
.tai-sao h3{font-size:26px;margin-bottom:8px}
.tai-sao p{margin:0;color:var(--chu-phu)}
.quy-trinh{list-style:none;counter-reset:b;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.quy-trinh li{counter-increment:b;background:#fff;padding:22px 18px;border:1px solid var(--vien);position:relative}
.quy-trinh li::before{content:counter(b);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--xanh);color:#fff;font-family:var(--font-tieude);font-size:22px;font-weight:700;margin-bottom:12px}
.quy-trinh h3{font-size:22px;margin-bottom:6px}
.quy-trinh p{margin:0;font-size:15px;color:var(--chu-phu)}
.cuon{overflow-x:auto}
.cuon table{min-width:560px}
@media (max-width:1140px){.tai-sao{grid-template-columns:1fr 1fr}.quy-trinh{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){.tai-sao,.quy-trinh{grid-template-columns:1fr}}
.bai table.tu-sheet td:first-child{font-weight:600}