:root {
        /* Hệ màu chuẩn xác theo Logo Bệnh viện */
        --brand-teal: #388E9F;       /* Màu xanh lục của chữ SÀI GÒN BÌNH THUẬN */
        --brand-red: #C8161D;        /* Màu đỏ đặc trưng */
        --brand-dark-blue: #2B2672;  /* Màu xanh dương đậm của chữ thập */
        --brand-light-blue: #7CD3F5; /* Màu nền vòng tròn hộ trợ */
        --text-dark: #2c3e50;
        --text-muted: #cbd5e1;
        --bg-light: #f4f7f9;
    }

    body {
        font-family: 'Roboto', sans-serif;
        color: var(--text-dark);
        background-color: #ffffff;
        overflow-x: hidden;
    }

    /* --- TOP BAR --- */
    .top-bar {
        background-color: var(--brand-dark-blue);
        color: #ffffff;
        padding: 10px 0;
        font-size: 13.5px;
        font-weight: 500;
    }
    .top-bar i {
        color: var(--brand-light-blue);
    }
    .hotline-link {
        background-color: var(--brand-red);
        color: #ffffff !important;
        padding: 6px 20px;
        border-radius: 50px;
        font-weight: 700;
        text-decoration: none;
        letter-spacing: 0.5px;
        transition: all 0.3s ease;
        box-shadow: 0 4px 10px rgba(200, 22, 29, 0.3);
    }
    .hotline-link:hover {
        background-color: #ffffff;
        color: var(--brand-red) !important;
        transform: translateY(-2px);
    }

    /* --- LOGO VÀ ĐIỀU HƯỚNG --- */
    .navbar {
        background: #ffffff !important;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        padding: 12px 0;
    }
    .navbar-brand img {
        max-height: 65px;
        width: auto;
        object-fit: contain;
    }

    /* --- MENU ĐA CẤP HOVER (DESKTOP) --- */
    .navbar-nav .nav-item {
        position: relative;
    }
    .navbar-nav .nav-link {
        text-transform: uppercase;
        font-weight: 700;
        font-size: 14px; 
        color: var(--brand-dark-blue) !important;
        padding: 20px 15px !important;
        transition: color 0.25s ease;
    }
    .navbar-nav .nav-item:hover > .nav-link,
    .navbar-nav .nav-item.active > .nav-link {
        color: var(--brand-red) !important;
    }

    /* Menu Cấp 2 */
    .dropdown-menu {
        border: none;
        border-radius: 8px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.12);
        border-top: 4px solid var(--brand-red);
        padding: 10px 0;
        margin-top: 0;
    }
    .dropdown-item {
        font-weight: 500;
        font-size: 14px;
        color: #444444;
        padding: 10px 24px;
        transition: all 0.2s ease;
    }
    .dropdown-item:hover {
        background-color: rgba(56, 142, 159, 0.08);
        color: var(--brand-teal);
        padding-left: 28px;
    }

    /* Menu Cấp 3 */
    .dropdown-submenu {
        position: relative;
    }
    .dropdown-submenu .dropdown-menu {
        top: -4px;
        left: 100%;
        margin-left: 0;
        border-top: 4px solid var(--brand-teal);
    }

    /* Xử lý hiển thị Hover trên Desktop */
    @media (min-width: 992px) {
        .navbar-nav .dropdown:hover > .dropdown-menu {
            display: block;
            opacity: 1;
            visibility: visible;
            animation: dropdownFadeUp 0.3s ease forwards;
        }
        .dropdown-submenu:hover > .dropdown-menu {
            display: block;
            opacity: 1;
            visibility: visible;
        }
        .dropdown-toggle::after {
            transition: transform 0.2s;
        }
        .dropdown-item.dropdown-toggle::after {
            transform: rotate(-90deg);
            float: right;
            margin-top: 8px;
        }
    }

    @keyframes dropdownFadeUp {
        from {
            opacity: 0;
            transform: translateY(10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* --- HERO SLIDER --- */
    #mainHeroSlider {
        box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    }
    .carousel-item {
        height: 520px;
        background-color: #111111;
    }
    .carousel-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
    }
    .carousel-item::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0; bottom: 0;
        background: linear-gradient(to right, rgba(0,0,0,0.6) 30%, rgba(0,0,0,0.1) 100%);
        z-index: 1;
    }
    .carousel-caption {
        z-index: 2;
        bottom: auto;
        top: 50%;
        transform: translateY(-50%);
        text-align: left;
        left: 8%;
        right: 8%;
    }
    .slider-content-box {
        max-width: 650px;
    }
    .slider-tagline {
        color: var(--brand-light-blue);
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 2px;
        font-size: 14px;
        margin-bottom: 10px;
    }
    .slider-title {
        font-size: 42px;
        font-weight: 700;
        text-transform: uppercase;
        color: #ffffff;
        line-height: 1.2;
        margin-bottom: 20px;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.4);
    }
    .slider-btn {
        background-color: var(--brand-teal);
        color: white;
        border: none;
        padding: 12px 30px;
        font-weight: 700;
        text-transform: uppercase;
        font-size: 14px;
        border-radius: 4px;
        transition: all 0.3s;
    }
    .slider-btn:hover {
        background-color: var(--brand-red);
        color: white;
        transform: translateY(-2px);
    }

    /* --- TIỆN ÍCH / DỊCH VỤ CHUYÊN KHOA --- */
    .features-section {
        padding: 80px 0;
        background-color: var(--bg-light);
    }
    .section-header h2 {
        font-weight: 700;
        color: var(--brand-dark-blue);
        position: relative;
        padding-bottom: 15px;
        text-transform: uppercase;
    }
    .section-header h2::after {
        content: '';
        position: absolute;
        bottom: 0; left: 50%;
        transform: translateX(-50%);
        width: 70px; height: 4px;
        background-color: var(--brand-red);
        border-radius: 2px;
    }
    .feature-card {
        background: #ffffff;
        border-radius: 8px;
        padding: 40px 30px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        height: 100%;
        border-bottom: 4px solid transparent;
    }
    .feature-card:hover {
        transform: translateY(-10px);
        border-bottom-color: var(--brand-teal);
        box-shadow: 0 15px 35px rgba(56, 142, 159, 0.15);
    }
    .feature-icon-wrapper {
        width: 70px; height: 70px;
        background-color: rgba(56, 142, 159, 0.1);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 25px;
        font-size: 30px;
        color: var(--brand-teal);
        transition: all 0.3s;
    }
    .feature-card:hover .feature-icon-wrapper {
        background-color: var(--brand-teal);
        color: #ffffff;
    }

    /* --- FOOTER HIỆN ĐẠI TƯƠNG PHẢN CAO --- */
    .main-footer {
        background-color: #11161d;
        color: #cbd5e1;
        padding: 80px 0 0;
        font-size: 14.5px;
        border-top: 5px solid var(--brand-teal);
    }
    .footer-title {
        color: #ffffff;
        font-size: 16px;
        font-weight: 700;
        text-transform: uppercase;
        margin-bottom: 25px;
        position: relative;
        padding-bottom: 10px;
        letter-spacing: 0.5px;
    }
    .footer-title::after {
        content: '';
        position: absolute;
        bottom: 0; left: 0;
        width: 40px; height: 3px;
        background-color: var(--brand-red);
    }
    .footer-desc-title {
        color: #ffffff;
        font-weight: 700;
        font-size: 18px;
        margin-bottom: 15px;
        line-height: 1.3;
    }
    .footer-links li {
        margin-bottom: 12px;
    }
    .footer-links a {
        color: #cbd5e1;
        text-decoration: none;
        transition: all 0.2s;
        display: inline-block;
    }
    .footer-links a:hover {
        color: var(--brand-teal);
        transform: translateX(5px);
    }
    .contact-info-list li {
        display: flex;
        align-items: flex-start;
        margin-bottom: 15px;
    }
    .contact-info-list i {
        color: var(--brand-teal);
        margin-top: 4px;
        width: 25px;
    }
    .map-box {
        border-radius: 6px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    }
    .footer-bottom {
        background-color: #0b0e12;
        padding: 20px 0;
        margin-top: 60px;
        border-top: 1px solid #1e293b;
        font-size: 13.5px;
    }
	/* --- About US --- */
	.about-us-2cols {
	  padding: 80px 20px;
	  background-color: #f9fafb;
	  font-family: 'Segoe UI', Roboto, sans-serif;
	}

	.about-us-2cols .container {
	  max-width: 1140px;
	  margin: 0 auto;
	  display: flex;
	  flex-direction: column;
	  gap: 40px;
	  align-items: center;
	}

	/* Định dạng cột chữ */
	.about-us-2cols .content-col {
	  flex: 1;
	  text-align: center;
	}

	.about-us-2cols .hospital-name {
	  color: #1e3a8a;
	  font-size: 28px;
	  font-weight: 700;
	  text-transform: uppercase;
	  margin-bottom: 10px;
	}

	.about-us-2cols .slogan {
	  color: #dc2626;
	  font-size: 20px;
	  font-weight: 600;
	  text-transform: uppercase;
	  margin-bottom: 25px;
	}

	.about-us-2cols .description {
	  color: #4b5563;
	  font-size: 16px;
	  line-height: 1.7;
	  text-align: justify;
	}

	.about-us-2cols .description p {
	  margin-bottom: 15px;
	}

	.about-us-2cols .highlight {
	  color: #1e3a8a;
	  font-weight: 600;
	}

	/* Định dạng cột ảnh */
	.about-us-2cols .image-col {
	  flex: 1;
	  width: 100%;
	}

	.about-us-2cols .img-wrapper {
	  border-radius: 16px;
	  overflow: hidden;
	  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
	}

	.about-us-2cols .img-wrapper img {
	  width: 100%;
	  height: auto;
	  display: block;
	  object-cover: cover;
	}

	/* Responsive cho màn hình Máy tính (Màn hình lớn) */
	@media (min-width: 992px) {
	  .about-us-2cols .container {
		flex-direction: row; /* Chuyển thành dạng 2 cột nằm ngang */
		gap: 60px;
	  }
	  
	  .about-us-2cols .content-col {
		text-align: left;
	  }
	  
	  .about-us-2cols .description {
		text-align: left;
	  }
	}
	/* HIGH LIGTS */
	.highlights-section-full {
	  padding: 60px 20px;
	  background-color: #ffffff;
	  font-family: 'Segoe UI', system-ui, sans-serif;
	}

	.highlights-section-full .container {
	  max-width: 1140px;
	  margin: 0 auto;
	}

	/* 3 Cột chữ hàng trên */
	.info-grid-row {
	  display: grid;
	  grid-template-columns: 1fr;
	  gap: 40px;
	  margin-bottom: 60px;
	}

	.info-col {
	  display: flex;
	  flex-direction: column;
	  align-items: flex-start;
	}

	.icon-box {
	  color: #00a896;
	  width: 48px;
	  height: 48px;
	  margin-bottom: 16px;
	  transition: color 0.3s ease;
	}

	.icon-box svg { width: 100%; height: 100%; }

	.col-title {
	  color: #1a528f;
	  font-size: 22px;
	  font-weight: 800;
	  text-transform: uppercase;
	  line-height: 1.3;
	  margin-bottom: 16px;
	  transition: color 0.3s ease;
	}

	.col-desc {
	  color: #6b7280;
	  font-size: 15px;
	  line-height: 1.7;
	  text-align: justify;
	  margin: 0;
	  transition: color 0.3s ease;
	}

	/* HOVER ĐỔI MÀU ĐỎ THƯƠNG HIỆU CHO PHẦN CHỮ */
	.info-col:hover .icon-box,
	.info-col:hover .col-title,
	.info-col:hover .col-desc {
	  color: #C8161D;
	}

	/* KHỐI 1 HÀNG NGANG CHỨA ẢNH ĐỘC LẬP */
	.full-width-gallery {
	  border-top: 1px solid #f3f4f6;
	  padding-top: 40px;
	}

	.gallery-heading {
	  color: #1a528f;
	  font-size: 16px;
	  font-weight: 700;
	  text-transform: uppercase;
	  margin-bottom: 24px;
	}

	.image-grid-container {
	  display: grid;
	  grid-template-columns: repeat(2, 1fr); /* 2 cột trên điện thoại */
	  gap: 16px;
	  width: 100%; /* Giúp dải ảnh kéo rộng tối đa hàng ngang */
	}

	.img-box {
	  position: relative;
	  aspect-ratio: 1 / 1;
	  border-radius: 16px;
	  overflow: hidden;
	  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
	}

	.img-box img {
	  width: 100%;
	  height: 100%;
	  object-fit: cover;
	  transition: transform 0.5s ease;
	}

	.img-box:hover img { transform: scale(1.05); }

	/* Điều khiển Grid trên thiết bị lớn hơn */
	@media (min-width: 768px) {
	  .info-grid-row {
		grid-template-columns: repeat(3, 1fr); /* Dàn 3 cột chữ */
	  }
	  .image-grid-container {
		grid-template-columns: repeat(3, 1fr); /* 3 cột trên tablet */
	  }
	}

	@media (min-width: 1024px) {
	  .image-grid-container {
		grid-template-columns: repeat(4, 1fr); /* Dàn rộng đủ 4 cột x 2 hàng trên PC */
		gap: 24px;
	  }
	}
	/* DICH VU */
	.services-section {
	  padding: 60px 20px;
	  background-color: #f8fafc;
	  font-family: 'Segoe UI', system-ui, sans-serif;
	}

	.services-container {
	  max-width: 1140px;
	  margin: 0 auto;
	}

	.services-header {
	  text-align: center;
	  margin-bottom: 48px;
	}

	.services-header h2 {
	  color: #1a528f;
	  font-size: 32px;
	  font-weight: 900;
	  text-transform: uppercase;
	  letter-spacing: 2px;
	  margin: 0;
	  position: relative;
	  display: inline-block;
	}

	.services-header h2::after {
	  content: '';
	  position: absolute;
	  bottom: -12px;
	  left: 50%;
	  transform: translateX(-50%);
	  width: 60px;
	  height: 4px;
	  background-color: #C8161D;
	  border-radius: 2px;
	}

	.services-grid {
	  display: grid;
	  grid-template-columns: 1fr;
	  gap: 24px;
	}

	/* Thẻ dịch vụ hiệu ứng Gradient chéo */
	.service-card {
	  position: relative;
	  aspect-ratio: 4 / 3;
	  border-radius: 16px;
	  overflow: hidden;
	  background: linear-gradient(135deg, #1d63b0 0%, #3bc5ca 100%);
	  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
	  cursor: pointer;
	  transition: transform 0.3s ease, box-shadow 0.3s ease;
	}

	.service-card:hover {
	  transform: translateY(-4px);
	  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
	}

	/* Lớp phủ ảnh mờ phía bên phải */
	.service-card::before {
	  content: '';
	  position: absolute;
	  top: 0;
	  right: 0;
	  bottom: 0;
	  width: 50%;
	  background-size: cover;
	  background-position: center;
	  mix-blend-mode: luminosity;
	  opacity: 0.4;
	  z-index: 1;
	  transition: opacity 0.3s ease;
	}

	.service-card:hover::before {
	  opacity: 0.6;
	}

	/* Gán ảnh nền cụ thể từng thẻ (Thay đổi đường dẫn ảnh của bạn tại đây) */
	.card-1::before { background-image: url('publicMSGBT/images/phau-thuat-khuc-xa.jpg'); }
	.card-2::before { background-image: url('publicMSGBT/images/mat-nguoi-cao-tuoi.jpg'); }
	.card-3::before { background-image: url('publicMSGBT/images/mat-tre-em.jpg'); }
	.card-4::before { background-image: url('publicMSGBT/images/lao-thi.jpg'); }
	.card-5::before { background-image: url('publicMSGBT/images/tang-nhan-ap.jpg'); }
	.card-6::before { background-image: url('publicMSGBT/images/dich-vu-khac.jpg'); }

	/* Lớp màu che phủ tạo độ sâu chữ đọc rõ */
	.service-card::after {
	  content: '';
	  position: absolute;
	  inset: 0;
	  background: linear-gradient(90deg, rgba(26,82,143,0.95) 0%, rgba(29,99,176,0.5) 60%, transparent 100%);
	  z-index: 2;
	}

	/* Khối nội dung chữ nằm trên cùng */
	.card-content {
	  position: relative;
	  z-index: 3;
	  height: 100%;
	  display: flex;
	  flex-direction: column;
	  justify-content: center;
	  align-items: flex-start;
	  padding: 30px;
	}

	.card-content h3 {
	  color: #ffffff;
	  font-size: 22px;
	  font-weight: 900;
	  text-transform: uppercase;
	  line-height: 1.3;
	  letter-spacing: 0.5px;
	  margin: 0 0 16px 0;
	  max-width: 75%;
	}

	/* Nút Chi tiết Đỏ */
	.btn-detail {
	  display: inline-block;
	  background-color: #C8161D;
	  color: #ffffff;
	  font-size: 12px;
	  font-weight: 700;
	  text-transform: uppercase;
	  text-decoration: none;
	  padding: 8px 20px;
	  border-radius: 4px;
	  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
	  transition: background-color 0.2s ease;
	}

	.btn-detail:hover {
	  background-color: #b01319;
	}

	/* Cấu trúc hiển thị Responsive */
	@media (min-width: 640px) {
	  .services-grid { grid-template-columns: repeat(2, 1fr); }
	}

	@media (min-width: 1024px) {
	  .services-grid { grid-template-columns: repeat(3, 1fr); gap: 30px; }
	  .card-content { padding: 40px; }
	  .card-content h3 { font-size: 24px; }
	}

	/* Responsive cho màn hình máy tính (Tablet & Desktop) */
	@media (min-width: 768px) {
	  .highlights-container {
		grid-template-columns: repeat(3, 1fr); /* Chia đều 3 cột */
		gap: 45px;
	  }
	  
	  .highlight-title {
		font-size: 24px;
	  }
	}
	
    /* --- ĐIỀU CHỈNH RESPONSIVE TRÊN MOBILE/TABLET --- */
    @media (max-width: 991.98px) {
        .carousel-item { height: 380px; }
        .slider-title { font-size: 28px; }
        .navbar-nav .nav-link { padding: 12px 10px !important; }
        
        /* Cấu trúc Menu nhấn mở dọc trên Mobile */
        .dropdown-menu { background-color: #f8fafc; border: none; box-shadow: none; padding-left: 15px; }
        .dropdown-submenu .dropdown-menu { left: 0; top: 0; background-color: #f1f5f9; padding-left: 15px; }
        .dropdown-toggle::after { float: right; margin-top: 8px; }
    }