/* ============================================================
           LANGUAGE SELECTOR
           ============================================================ */
        .lang-selector {
            position: relative;
            margin-left: 0.5rem;
        }

        .lang-btn {
            background: transparent;
            border: none;
            padding: 0;
            margin-left: 0.5rem;
            font-family: var(--font-body);
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--dark-950);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: color 0.25s;
        }

        .lang-btn:hover {
            color: var(--dark-800);
        }

        .lang-btn img.flag {
            width: 22px;
            border-radius: 2px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.15);
        }

        .lang-menu {
            position: absolute;
            top: calc(100% + 10px);
            right: 0;
            background: var(--white);
            border: 1px solid var(--border-subtle);
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            list-style: none;
            min-width: 130px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 100;
        }

        .lang-selector:hover .lang-menu,
        .lang-menu.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .lang-menu a {
            display: flex !important;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1rem !important;
            color: var(--text-secondary) !important;
            text-transform: none !important;
            font-weight: 500 !important;
            letter-spacing: normal !important;
            border-radius: 8px;
        }

        .lang-menu a::after {
            display: none !important;
        }

        .lang-menu a:hover {
            background: var(--light-50);
            color: var(--gold-600) !important;
        }
        
        .mobile-lang-switch {
            border-top: 1px solid var(--light-200);
            margin-top: 1rem;
            padding-top: 1rem;
        }
        
        .mobile-lang-switch a {
            display: flex !important;
            align-items: center;
            gap: 0.5rem;
            border-bottom: none !important;
            font-size: 0.95rem !important;
            color: var(--text-primary) !important;
        }

        /* ============================================================
           DESIGN SYSTEM — CSS VARIABLES
           ============================================================ */
        :root {
            /* ========== GOLD PALETTE ========== */
            --gold-100: #FFF8E1;
            --gold-200: #FFECB3;
            --gold-300: #FFD54F;
            --gold-400: #FFC107;
            --gold-500: #F5B301;
            /* Primary Gold */
            --gold-600: #D49A00;
            /* Hover / Darker Gold */
            --gold-700: #A37600;
            --gold-glow: rgba(245, 179, 1, 0.30);
            --gold-glow-sm: rgba(245, 179, 1, 0.12);

            /* ========== LIGHT / WHITE BASE ========== */
            --white: #FFFFFF;
            --off-white: #FDFCF8;
            /* Kem nhẹ */
            --light-50: #FAF9F5;
            --light-100: #F5F2EA;
            --light-200: #EDE9DC;
            --light-300: #DDD7C8;

            /* ========== DARK (dark palette giữ cho dark elements) ========== */
            --dark-950: #0E0C08;
            --dark-900: #1A1713;
            --dark-800: #241F18;
            --dark-700: #302A20;

            /* ========== TEXT (trên nền trắng) ========== */
            --text-primary: #1A1510;
            /* Đen ấm đậm */
            --text-secondary: #443C2E;
            /* Nâu đậm */
            --text-muted: #7A6E58;
            /* Xám nâu */
            --text-gold: var(--gold-600);

            /* ========== SURFACES (nền trắng) ========== */
            --surface-base: var(--white);
            --surface-raised: var(--off-white);
            --surface-card: var(--light-100);

            /* ========== BORDERS (gold nhẹ trên nền trắng) ========== */
            --border-subtle: rgba(245, 179, 1, 0.18);
            --border-medium: rgba(245, 179, 1, 0.40);
            --border-strong: rgba(245, 179, 1, 0.75);

            /* ========== FONTS ========== */
            --font-display: 'DM Serif Display', serif;
            --font-body: 'Plus Jakarta Sans', sans-serif;

            /* ========== SPACING ========== */
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 7rem;

            /* ========== TRANSITION ========== */
            --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ============================================================
           RESET & BASE
           ============================================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--white);
            color: var(--text-secondary);
            line-height: 1.7;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        /* ============================================================
           LAYOUT UTILITIES
           ============================================================ */
        .container {
            width: min(1280px, 100% - 2.5rem);
            margin-inline: auto;
        }

        .section-pad {
            padding-block: var(--space-xl);
        }

        .section-pad-sm {
            padding-block: var(--space-lg);
        }

        /* ============================================================
           ANIMATIONS
           ============================================================ */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(32px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInLeft {
            from {
                opacity: 0;
                transform: translateX(-32px);
            }

            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes fadeInRight {
            from {
                opacity: 0;
                transform: translateX(32px);
            }

            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes glow-pulse {

            0%,
            100% {
                box-shadow: 0 0 20px var(--gold-glow);
            }

            50% {
                box-shadow: 0 0 40px var(--gold-glow), 0 0 80px rgba(245, 179, 1, 0.15);
            }
        }

        @keyframes spin-slow {
            from {
                transform: rotate(0deg);
            }

            to {
                transform: rotate(360deg);
            }
        }

        @keyframes shimmer {
            0% {
                background-position: -200% center;
            }

            100% {
                background-position: 200% center;
            }
        }

        @keyframes float-badge {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(-8px);
            }
        }

        @keyframes bar-grow {
            from {
                width: 0;
            }

            to {
                width: 6rem;
            }
        }

        /* Scroll-reveal classes */
        .reveal {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity 0.7s var(--ease-smooth), transform 0.7s var(--ease-smooth);
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-left {
            opacity: 0;
            transform: translateX(-28px);
            transition: opacity 0.7s var(--ease-smooth), transform 0.7s var(--ease-smooth);
        }

        .reveal-left.visible {
            opacity: 1;
            transform: translateX(0);
        }

        .reveal-right {
            opacity: 0;
            transform: translateX(28px);
            transition: opacity 0.7s var(--ease-smooth), transform 0.7s var(--ease-smooth);
        }

        .reveal-right.visible {
            opacity: 1;
            transform: translateX(0);
        }

        /* Stagger delays */
        .delay-1 {
            transition-delay: 0.10s;
        }

        .delay-2 {
            transition-delay: 0.20s;
        }

        .delay-3 {
            transition-delay: 0.30s;
        }

        .delay-4 {
            transition-delay: 0.40s;
        }

        .delay-5 {
            transition-delay: 0.50s;
        }

        .delay-6 {
            transition-delay: 0.60s;
        }

        /* ============================================================
           TYPOGRAPHY
           ============================================================ */
        .display-title {
            font-family: var(--font-display);
            color: var(--text-primary);
            line-height: 1.15;
        }

        .section-label {
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--gold-500);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .section-label::before {
            content: '';
            display: inline-block;
            width: 1.5rem;
            height: 2px;
            background: var(--gold-500);
            border-radius: 2px;
        }

        /* ============================================================
           GOLD DIVIDER
           ============================================================ */
        .gold-divider {
            width: 4rem;
            height: 3px;
            background: linear-gradient(90deg, var(--gold-500), var(--gold-300), var(--gold-500));
            background-size: 200% 100%;
            border-radius: 99px;
            animation: shimmer 2.5s ease infinite;
        }

        /* ============================================================
           BUTTON SYSTEM
           ============================================================ */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            font-family: var(--font-body);
            font-weight: 700;
            font-size: 0.875rem;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border-radius: 9999px;
            padding: 0.875rem 2rem;
            transition: all 0.3s var(--ease-smooth);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--gold-500) 0%, var(--gold-400) 50%, var(--gold-600) 100%);
            color: var(--dark-950);
            box-shadow: 0 4px 20px var(--gold-glow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--gold-glow), 0 0 0 3px var(--gold-300);
            background: linear-gradient(135deg, var(--gold-400) 0%, var(--gold-500) 50%, var(--gold-500) 100%);
        }

        .btn-outline {
            background: transparent;
            color: var(--gold-700);
            border: 2px solid var(--gold-500);
        }

        .btn-outline:hover {
            background: var(--gold-100);
            border-color: var(--gold-600);
            box-shadow: 0 4px 16px var(--gold-glow-sm);
            transform: translateY(-2px);
        }

        /* ============================================================
           TOP BAR
           ============================================================ */
        .top-bar {
            background: var(--gold-500);
            border-bottom: 1px solid var(--gold-600);
            padding: 0.5rem 0;
            font-size: 0.8rem;
            color: var(--dark-950);
            font-weight: 600;
            position: relative;
            z-index: 1000;
        }

        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .top-bar a {
            color: var(--dark-950);
            font-weight: 700;
        }

        .top-bar a:hover {
            color: var(--dark-800);
            text-decoration: underline;
        }

        .top-bar .top-info {
            display: flex;
            gap: 1.5rem;
            align-items: center;
        }

        .top-bar .top-info i {
            color: var(--dark-950);
            margin-right: 0.35rem;
        }

        /* ============================================================
           NAVIGATION
           ============================================================ */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 900;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 2px solid var(--border-subtle);
            box-shadow: 0 2px 20px rgba(245, 179, 1, 0.08);
            padding: 0.875rem 0;
        }

        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        /* Logo */
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.875rem;
        }

        .logo-img {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            object-fit: cover;
            border: 1.5px solid var(--border-medium);
            box-shadow: 0 0 16px var(--gold-glow-sm);
            transition: transform 0.3s var(--ease-smooth), box-shadow 0.3s;
        }

        .logo-wrap:hover .logo-img {
            transform: scale(1.06);
            box-shadow: 0 0 24px var(--gold-glow);
        }

        .logo-text-main {
            font-family: var(--font-display);
            font-size: 1.3rem;
            color: var(--gold-500);
            letter-spacing: 0.08em;
            line-height: 1.1;
        }

        .logo-text-sub {
            font-size: 0.65rem;
            letter-spacing: 0.35em;
            text-transform: uppercase;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* Nav links */
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--text-secondary);
            padding: 0.5rem 0.875rem;
            border-radius: 6px;
            position: relative;
            transition: color 0.25s;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0.875rem;
            right: 0.875rem;
            height: 2px;
            background: var(--gold-500);
            border-radius: 9999px;
            transform: scaleX(0);
            transform-origin: right;
            transition: transform 0.3s var(--ease-smooth);
        }

        .nav-links a:hover {
            color: var(--gold-600);
        }

        .nav-links a:hover::after {
            transform: scaleX(1);
            transform-origin: left;
        }

        .nav-links .nav-cta {
            background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
            color: var(--dark-950);
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            font-weight: 800;
            box-shadow: 0 4px 16px var(--gold-glow);
        }

        .nav-links .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 22px var(--gold-glow);
        }

        .nav-links .nav-cta::after {
            display: none;
        }

        /* Mobile hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--gold-500);
            border-radius: 2px;
            transition: all 0.3s;
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile nav drawer */
        .mobile-nav {
            display: none;
            background: var(--white);
            border-bottom: 2px solid var(--border-subtle);
            padding: 1.25rem var(--space-sm);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav a {
            display: block;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--light-200);
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            font-size: 0.875rem;
            color: var(--text-secondary);
            transition: color 0.2s, padding-left 0.2s;
        }

        .mobile-nav a:hover {
            color: var(--gold-600);
            padding-left: 0.5rem;
        }

        .mobile-nav .mobile-cta {
            margin-top: 1rem;
            display: block;
            text-align: center;
            color: var(--dark-950);
            background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
            border-radius: 9999px;
            padding: 0.875rem;
            font-weight: 800;
            box-shadow: 0 4px 16px var(--gold-glow);
        }

        /* ============================================================
           FLOATING CONTACT BUTTONS (Premium VR Style)
           ============================================================ */
        #button-contact-vr {
            position: fixed;
            bottom: 40px;
            left: 30px;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        #button-contact-vr .contact-btn {
            position: relative;
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            cursor: pointer;
        }

        #button-contact-vr .contact-ring {
            position: absolute;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            border: 2px solid transparent;
            animation: contact-pulse 2s infinite cubic-bezier(0.4, 0, 0.2, 1);
            pointer-events: none;
            z-index: 1;
        }

        #button-contact-vr .contact-circle {
            position: relative;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s;
            background-color: var(--color-brand);
            overflow: hidden;
        }

        #button-contact-vr .contact-circle i {
            color: #fff;
            font-size: 22px;
            line-height: 1;
            transition: transform 0.4s;
        }

        #button-contact-vr .contact-circle img {
            width: 26px;
            height: 26px;
            object-fit: contain;
            transition: transform 0.4s;
        }

        #button-contact-vr .contact-btn:hover .contact-circle {
            transform: scale(1.15);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
        }

        /* Hover animations for icons */
        #button-contact-vr .contact-btn:hover .contact-circle i,
        #button-contact-vr .contact-btn:hover .contact-circle img {
            transform: scale(1.1);
        }

        #button-contact-vr .contact-btn:hover .contact-circle i.fa-phone-alt {
            animation: ring-shake 0.4s ease-in-out infinite alternate;
        }

        /* Tooltip Style */
        #button-contact-vr .contact-tooltip {
            position: absolute;
            left: 65px;
            background: #fff;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            font-family: var(--font-body);
            white-space: nowrap;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            opacity: 0;
            visibility: hidden;
            transform: translateX(-15px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            pointer-events: none;
            border: 1px solid var(--border-medium);
        }

        #button-contact-vr .contact-tooltip::before {
            content: '';
            position: absolute;
            left: -6px;
            top: 50%;
            transform: translateY(-50%);
            border-width: 6px 7px 6px 0;
            border-style: solid;
            border-color: transparent var(--gold-300) transparent transparent;
            z-index: -1;
        }

        #button-contact-vr .contact-tooltip::after {
            content: '';
            position: absolute;
            left: -5px;
            top: 50%;
            transform: translateY(-50%);
            border-width: 5px 6px 5px 0;
            border-style: solid;
            border-color: transparent #fff transparent transparent;
        }

        #button-contact-vr .contact-btn:hover .contact-tooltip {
            opacity: 1;
            visibility: visible;
            transform: translateX(0);
        }

        /* Brand Colors & specific styling */
        .contact-fb {
            --color-brand: #1877F2;
        }

        .contact-fb .contact-ring {
            border-color: rgba(24, 119, 242, 0.5);
        }

        .contact-fb .contact-circle {
            box-shadow: 0 4px 15px rgba(24, 119, 242, 0.3);
        }

        .contact-zalo {
            --color-brand: #fff;
        }

        .contact-zalo .contact-circle {
            box-shadow: 0 4px 15px rgba(0, 104, 255, 0.25);
        }

        .contact-zalo .contact-ring {
            border-color: rgba(0, 104, 255, 0.5);
        }

        .contact-wa {
            --color-brand: #25D366;
        }

        .contact-wa .contact-ring {
            border-color: rgba(37, 211, 102, 0.5);
        }

        .contact-wa .contact-circle {
            box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
        }

        /* Phone & Phone Bar */
        .contact-phone {
            --color-brand: var(--gold-500);
        }

        .contact-phone .contact-circle {
            box-shadow: 0 4px 15px rgba(245, 179, 1, 0.4);
        }

        .contact-phone .contact-circle i {
            color: var(--dark-950);
        }

        .contact-phone .contact-ring {
            border-color: rgba(245, 179, 1, 0.6);
        }

        .phone-bar {
            position: absolute;
            left: 22px;
            top: 50%;
            transform: translateY(-50%);
            background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
            color: var(--dark-950);
            padding: 8px 18px 8px 38px;
            border-radius: 30px;
            font-family: var(--font-body);
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            z-index: 1;
            box-shadow: 0 6px 16px rgba(245, 179, 1, 0.3);
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .phone-bar:hover {
            color: var(--dark-950);
            background: linear-gradient(135deg, var(--gold-300), var(--gold-400));
            padding-left: 42px;
        }

        /* Phone icon: shake 3x then pause 4s — less annoying than infinite */
        .contact-phone .contact-circle i {
            animation: phone-shake 1.5s ease-in-out 3, phone-pause 4s 4.5s infinite;
        }

        @keyframes phone-pause {

            0%,
            100% {
                transform: rotate(0deg);
            }
        }

        /* Animations */
        @keyframes contact-pulse {
            0% {
                transform: scale(1);
                opacity: 0.8;
            }

            50% {
                transform: scale(1.6);
                opacity: 0;
            }

            100% {
                transform: scale(1.6);
                opacity: 0;
            }
        }

        @keyframes ring-shake {

            0%,
            100% {
                transform: rotate(0deg);
            }

            25% {
                transform: rotate(-20deg);
            }

            75% {
                transform: rotate(20deg);
            }
        }

        @keyframes phone-shake {

            0%,
            100% {
                transform: rotate(0deg);
            }

            10% {
                transform: rotate(-15deg);
            }

            20% {
                transform: rotate(15deg);
            }

            30% {
                transform: rotate(-15deg);
            }

            40% {
                transform: rotate(15deg);
            }

            50% {
                transform: rotate(0deg);
            }
        }

        /* ============================================================
           HERO SECTION
           ============================================================ */
        .hero {
            background: linear-gradient(145deg, var(--off-white) 0%, var(--gold-100) 50%, var(--light-50) 100%);
            position: relative;
            overflow: hidden;
            padding-block: 5rem 6rem;
        }

        /* Decorative background orbs */
        .hero-glow-1 {
            position: absolute;
            top: -80px;
            left: -80px;
            width: 550px;
            height: 550px;
            background: radial-gradient(circle, rgba(245, 179, 1, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-glow-2 {
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 450px;
            height: 450px;
            background: radial-gradient(circle, rgba(245, 179, 1, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        /* Hero image */
        .hero-img-wrap {
            position: relative;
        }

        .hero-img-frame {
            border-radius: 24px;
            overflow: hidden;
            position: relative;
            aspect-ratio: 4/5;
            border: 3px solid var(--gold-300);
            box-shadow: 0 20px 60px rgba(245, 179, 1, 0.20), 0 4px 20px rgba(0, 0, 0, 0.10);
        }

        .hero-img-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.8s var(--ease-smooth);
        }

        .hero-img-frame:hover img {
            transform: scale(1.04);
        }

        /* Gold corner accent */
        .hero-img-frame::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(245, 179, 1, 0.10) 0%, transparent 50%);
            z-index: 1;
            pointer-events: none;
        }

        /* Floating badge */
        .hero-badge {
            position: absolute;
            bottom: -1.5rem;
            right: -1.5rem;
            width: 130px;
            height: 130px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
            color: var(--dark-950);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            box-shadow: 0 8px 30px var(--gold-glow), 0 0 0 6px var(--off-white);
            animation: float-badge 3.5s ease-in-out infinite;
            z-index: 10;
        }

        .hero-badge .badge-num {
            font-family: var(--font-display);
            font-size: 2.5rem;
            line-height: 1;
            font-weight: bold;
        }

        .hero-badge .badge-label {
            font-size: 0.65rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            line-height: 1.3;
            margin-top: 2px;
        }

        /* Hero content */
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--gold-200);
            border: 1.5px solid var(--gold-400);
            color: var(--gold-700);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            padding: 0.4rem 1rem;
            border-radius: 9999px;
            margin-bottom: 1.5rem;
            animation: fadeInUp 0.7s ease forwards;
        }

        .hero-title {
            font-family: var(--font-display);
            font-size: clamp(2.2rem, 4.5vw, 3.6rem);
            color: var(--text-primary);
            line-height: 1.15;
            margin-bottom: 1.25rem;
            animation: fadeInUp 0.7s ease 0.1s both;
        }

        .hero-title .gold {
            color: var(--gold-600);
        }

        .hero-desc {
            color: var(--text-muted);
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 2rem;
            animation: fadeInUp 0.7s ease 0.2s both;
        }

        .hero-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.875rem;
            margin-bottom: 2.5rem;
            animation: fadeInUp 0.7s ease 0.3s both;
        }

        .hero-features li {
            display: flex;
            align-items: center;
            gap: 0.875rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        .hero-features .feat-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--gold-200);
            border: 1.5px solid var(--gold-400);
            color: var(--gold-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            animation: fadeInUp 0.7s ease 0.4s both;
        }

        /* ============================================================
           TRUST STRIP (Stats)
           ============================================================ */
        .trust-strip {
            background: var(--gold-500);
            border-block: none;
            padding: 3rem 0;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }

        .trust-num {
            font-family: var(--font-display);
            font-size: 2.75rem;
            color: var(--dark-950);
            line-height: 1;
            margin-bottom: 0.35rem;
        }

        .trust-label {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--dark-800);
        }

        .trust-divider {
            width: 1px;
            background: rgba(0, 0, 0, 0.15);
            align-self: stretch;
        }

        /* ============================================================
           WHY US (Pillars)
           ============================================================ */
        .pillars-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .pillar-card {
            background: var(--dark-700);
            border: 1.5px solid rgba(245, 179, 1, 0.20);
            border-radius: 20px;
            padding: 2rem;
            text-align: center;
            transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
        }

        .pillar-card:hover {
            border-color: var(--gold-400);
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(245, 179, 1, 0.12), 0 0 0 1px var(--gold-300);
        }

        .pillar-icon {
            width: 58px;
            height: 58px;
            border-radius: 14px;
            background: var(--gold-100);
            border: 1.5px solid var(--gold-300);
            color: var(--gold-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin: 0 auto 1.25rem auto;
            transition: background 0.3s, box-shadow 0.3s;
        }

        .pillar-card:hover .pillar-icon {
            background: var(--gold-200);
            box-shadow: 0 0 20px var(--gold-glow);
        }

        .pillar-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--off-white);
            margin-bottom: 0.75rem;
        }

        .pillar-desc {
            font-size: 0.9rem;
            color: var(--light-300);
            line-height: 1.7;
        }

        /* ============================================================
           SERVICES SECTION
           ============================================================ */
        .services-section {
            background: var(--light-50);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .service-card {
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            aspect-ratio: 3/4;
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .service-card:hover {
            border-color: var(--border-strong);
            box-shadow: 0 0 40px var(--gold-glow-sm);
        }

        .service-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.7s var(--ease-smooth);
        }

        .service-card:hover img {
            transform: scale(1.08);
        }

        .service-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 8, 3, 0.96) 0%, rgba(10, 8, 3, 0.35) 55%, transparent 80%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 1.75rem;
        }

        .service-badge {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
            color: var(--dark-950);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 0.875rem;
            box-shadow: 0 4px 16px var(--gold-glow);
        }

        .service-name {
            font-family: var(--font-display);
            font-size: 1.3rem;
            color: var(--white);
            margin-bottom: 0.4rem;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
        }

        .service-desc-sm {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.5;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s var(--ease-smooth), opacity 0.4s;
            opacity: 0;
        }

        .service-card:hover .service-desc-sm {
            max-height: 80px;
            opacity: 1;
        }

        /* ============================================================
           DIFFERENTIATORS (Why Choose Us)
           ============================================================ */
        .why-section {
            background: var(--white);
        }

        .why-inner {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 5rem;
            align-items: center;
        }

        /* Center orbit visual */
        .why-orbit-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2rem;
        }

        .orbit-ring {
            position: relative;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 2px solid var(--gold-200);
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--gold-100);
        }

        .orbit-ring::before {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            border: 2px dashed var(--gold-400);
            animation: spin-slow 25s linear infinite;
        }

        .orbit-core {
            width: 140px;
            height: 140px;
            border-radius: 50%;
            border: 3px solid var(--gold-400);
            overflow: hidden;
            z-index: 2;
            box-shadow: 0 0 40px var(--gold-glow);
        }

        .orbit-core img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .orbit-caption {
            text-align: center;
        }

        .orbit-caption h3 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
        }

        .orbit-caption p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Benefits grid */
        .benefits-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
        }

        .benefit-item {
            display: flex;
            gap: 1rem;
            padding: 1.25rem;
            border-radius: 14px;
            border: 1.5px solid var(--light-200);
            background: var(--off-white);
            transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
        }

        .benefit-item:hover {
            border-color: var(--gold-400);
            transform: translateY(-3px);
            box-shadow: 0 6px 24px rgba(245, 179, 1, 0.12), 0 0 0 1px var(--gold-300);
        }

        .benefit-icon {
            width: 46px;
            height: 46px;
            border-radius: 10px;
            background: var(--gold-100);
            border: 1.5px solid var(--gold-300);
            color: var(--gold-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
            transition: background 0.3s;
        }

        .benefit-item:hover .benefit-icon {
            background: var(--gold-200);
        }

        .benefit-item h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.3rem;
            transition: color 0.2s;
        }

        .benefit-item:hover h4 {
            color: var(--gold-700);
        }

        .benefit-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ============================================================
           PROCESS / HOW IT WORKS
           ============================================================ */
        .process-section {
            background: linear-gradient(135deg, var(--gold-100) 0%, var(--off-white) 60%, var(--gold-100) 100%);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 2rem;
            left: calc(12.5% + 1.5rem);
            right: calc(12.5% + 1.5rem);
            height: 2px;
            background: linear-gradient(90deg, var(--gold-500), var(--gold-300), var(--gold-500));
            z-index: 1;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 4rem;
            height: 4rem;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
            color: var(--dark-950);
            font-family: var(--font-display);
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
            box-shadow: 0 0 24px var(--gold-glow);
        }

        .step-title {
            font-weight: 700;
            color: var(--text-primary);
            font-size: 0.95rem;
            margin-bottom: 0.5rem;
        }

        .step-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============================================================
           CTA BANNER
           ============================================================ */
        .cta-banner {
            background: linear-gradient(135deg, var(--gold-500) 0%, var(--gold-400) 50%, var(--gold-600) 100%);
            border: none;
            border-radius: 24px;
            padding: 4rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(245, 179, 1, 0.30);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(255, 255, 255, 0.20) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner h2 {
            font-family: var(--font-display);
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            color: var(--dark-950);
            margin-bottom: 1rem;
        }

        .cta-banner p {
            color: var(--dark-800);
            font-size: 1rem;
            font-weight: 500;
            margin-bottom: 2rem;
        }

        .cta-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* CTA buttons trên nền vàng */
        .cta-banner .btn-primary {
            background: var(--dark-950);
            color: var(--gold-400);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
        }

        .cta-banner .btn-primary:hover {
            background: var(--dark-800);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .cta-banner .btn-outline {
            background: rgba(255, 255, 255, 0.20);
            color: var(--dark-950);
            border: 2px solid rgba(0, 0, 0, 0.25);
        }

        .cta-banner .btn-outline:hover {
            background: rgba(255, 255, 255, 0.35);
            border-color: rgba(0, 0, 0, 0.35);
        }

        /* ============================================================
           MAP SECTION
           ============================================================ */
        .map-section {
            background: var(--light-50);
        }

        .map-inner {
            display: grid;
            grid-template-columns: 1fr 1.6fr;
            gap: 3rem;
            align-items: stretch;
        }

        .map-info {
            background: var(--white);
            border: 1.5px solid var(--light-200);
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }

        .map-info h3 {
            font-family: var(--font-display);
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-bottom: 1.5rem;
        }

        .map-contact-row {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: 1rem 0;
            border-bottom: 1px solid var(--light-200);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .map-contact-row:last-child {
            border-bottom: none;
        }

        .map-contact-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--gold-100);
            border: 1.5px solid var(--gold-300);
            color: var(--gold-700);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .map-contact-row .mc-label {
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--text-muted);
            margin-bottom: 0.2rem;
        }

        .map-contact-row .mc-value {
            font-weight: 600;
            color: var(--text-primary);
        }

        /* Map embed - sáng hơn trên nền trắng */

        .map-embed-wrap {
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            min-height: 420px;
        }

        .map-embed-wrap iframe {
            width: 100%;
            height: 100%;
            min-height: 420px;
            border: 0;
            filter: grayscale(30%) contrast(1.05) saturate(0.9);
        }

        /* ============================================================
           FOOTER
           ============================================================ */
        .footer {
            background: var(--dark-950);
            border-top: 4px solid var(--gold-500);
            padding-top: 4rem;
            padding-bottom: 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 3rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid rgba(245, 179, 1, 0.15);
        }

        .footer-logo-row {
            display: flex;
            align-items: center;
            gap: 0.875rem;
            margin-bottom: 1.25rem;
        }

        .footer-logo-img {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            object-fit: cover;
            border: 1px solid var(--border-medium);
        }

        .footer-brand-name {
            font-family: var(--font-display);
            font-size: 1.35rem;
            color: var(--gold-500);
        }

        .footer-brand-desc {
            font-size: 0.87rem;
            color: #7A7060;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .footer-contact-row {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-size: 0.87rem;
            color: #6B6050;
            margin-bottom: 0.625rem;
            transition: color 0.2s;
        }

        .footer-contact-row i {
            color: var(--gold-500);
            width: 1rem;
        }

        .footer-contact-row a:hover {
            color: var(--gold-400);
        }

        .footer-title {
            font-size: 0.8rem;
            font-weight: 800;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: #F5F3EE;
            margin-bottom: 1.25rem;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .footer-links a {
            font-size: 0.875rem;
            color: #6B6050;
            display: flex;
            align-items: center;
            gap: 0.625rem;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-links a i {
            color: var(--gold-500);
            font-size: 0.8rem;
        }

        .footer-links a:hover {
            color: var(--gold-400);
            padding-left: 4px;
        }

        .footer-socials {
            display: flex;
            gap: 0.75rem;
            margin-top: 1.5rem;
        }

        .footer-social-btn {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--dark-700);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: transform 0.25s, box-shadow 0.25s, opacity 0.25s;
            overflow: hidden;
        }

        .footer-social-btn:hover {
            transform: translateY(-3px) scale(1.10);
            opacity: 0.9;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
        }

        /* Brand colors per platform */
        .fsb-facebook {
            background: #1877F2;
        }

        .fsb-zalo {
            background: #fff;
        }

        .fsb-whatsapp {
            background: #25D366;
        }

        .fsb-phone {
            background: var(--gold-500);
            color: var(--dark-950);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.5rem;
            font-size: 0.78rem;
            color: #4A4038;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .footer-bottom a {
            color: var(--gold-400);
            font-weight: 600;
        }

        .footer-bottom a:hover {
            color: var(--gold-300);
        }

        /* ============================================================
           UTILITY CLASSES & MISC
           ============================================================ */
        .section-dark {
            background: var(--dark-800);
        }

        .back-to-top {
            position: fixed;
            bottom: 40px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--dark-950);
            color: var(--gold-500);
            border: 2px solid var(--gold-500);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            cursor: pointer;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--gold-500);
            color: var(--dark-950);
            box-shadow: 0 6px 20px var(--gold-glow);
            transform: translateY(-4px);
        }

        /* ============================================================
           SECTION HEADER (reusable)
           ============================================================ */
        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-header .section-label {
            margin-bottom: 0.75rem;
        }

        .section-header h2 {
            font-family: var(--font-display);
            font-size: clamp(1.9rem, 3.5vw, 2.9rem);
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 1rem;
        }

        .section-header h2 .gold {
            color: var(--gold-600);
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 540px;
            margin-inline: auto;
            line-height: 1.7;
        }

        .section-header .gold-divider {
            margin: 1.25rem auto 0;
        }

        /* On dark backgrounds, section-header text needs to be lighter */
        .section-dark .section-header h2 {
            color: var(--off-white);
        }

        .section-dark .section-header p {
            color: var(--light-300);
        }

        .section-dark .section-label {
            color: var(--gold-400);
        }

        .section-dark .section-label::before {
            background: var(--gold-400);
        }

        /* ============================================================
           RESPONSIVE
           ============================================================ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .hero-img-wrap {
                max-width: 480px;
                margin-inline: auto;
            }

            .why-inner {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .why-orbit-wrap {
                flex-direction: row;
            }

            .map-inner {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-xl: 4rem;
                --space-lg: 2.5rem;
            }

            .top-bar {
                display: none;
            }

            .nav-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .trust-divider {
                display: none;
            }

            .pillars-grid {
                grid-template-columns: 1fr;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-steps::before {
                display: none;
            }

            .benefits-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .cta-banner {
                padding: 2.5rem 1.5rem;
            }

            .why-orbit-wrap {
                flex-direction: column;
            }
        }

        @media (max-width: 480px) {
            .trust-grid {
                grid-template-columns: 1fr 1fr;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .floating-social {
                left: 8px;
            }

            .back-to-top {
                bottom: 20px;
                right: 20px;
            }
        }