/* ==========================================================================
       1. SETUP & VARIABLES
       ========================================================================== */
    @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&display=swap');

    :root {
        --c-dark: #1A1A1A;
        --c-light: #F9F6F2;
        --c-gold: #C5A059;
        --c-gold-hover: #b08d4d;
        --c-white: #ffffff;
        --font-serif: 'Playfair Display', serif;
        --font-sans: 'Inter', sans-serif;
        --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-sans);
        background-color: var(--c-light);
        color: var(--c-dark);
        overflow-x: hidden;
        line-height: 1.6;
    }

    ::selection {
        background-color: var(--c-gold);
        color: var(--c-white);
    }

    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    button, input { font-family: inherit; border: none; outline: none; background: none; }
    button { cursor: pointer; }
    img, video { max-width: 100%; height: auto; display: block; }

    .container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 24px;
    }

    @media (min-width: 768px) { .container { padding: 0 48px; } }

    /* Typography Utilities */
    .font-playfair { font-family: var(--font-serif); }
    .font-inter { font-family: var(--font-sans); }
    .text-gold { color: var(--c-gold); }
    .text-white { color: var(--c-white); }
    .text-dark { color: var(--c-dark); }
    .tracking-widest { letter-spacing: 0.2em; }
    .uppercase { text-transform: uppercase; }

    /* ==========================================================================
       2. ANIMATIONS (KEYFRAMES)
       ========================================================================== */
    @keyframes revealUp {
        0% { transform: translateY(110%); opacity: 0; }
        100% { transform: translateY(0); opacity: 1; }
    }
    @keyframes growLine {
        0% { width: 0; opacity: 0; }
        100% { width: 40px; opacity: 1; }
    }
    @keyframes shimmer {
        0% { transform: translateX(-100%) skewX(-15deg); }
        100% { transform: translateX(200%) skewX(-15deg); }
    }
    @keyframes kenBurns {
        0% { transform: scale(1); }
        100% { transform: scale(1.1); }
    }
    @keyframes slideRight {
        0% { width: 0%; }
        100% { width: 100%; }
    }
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    @keyframes float {
        0% { transform: translateY(0px); }
        50% { transform: translateY(-15px); }
        100% { transform: translateY(0px); }
    }
    @keyframes subtleGlow {
        0%, 100% { filter: drop-shadow(0 0 5px rgba(197,160,89,0.3)); }
        50% { filter: drop-shadow(0 0 18px rgba(197,160,89,0.8)); }
    }
    @keyframes gentleShake {
        0%, 85%, 100% { transform: rotate(0deg); }
        88% { transform: rotate(-2deg); }
        92% { transform: rotate(2deg); }
        96% { transform: rotate(-2deg); }
    }
    @keyframes candleText {
        0%, 100% { text-shadow: 0 0 8px rgba(197,160,89, 0.8), 0 0 15px rgba(197,160,89, 0.4); opacity: 1; color: #fff; }
        25% { text-shadow: 0 0 4px rgba(197,160,89, 0.3); opacity: 0.9; color: #fdfbf7; }
        50% { text-shadow: 0 0 10px rgba(197,160,89, 0.9), 0 0 20px rgba(197,160,89, 0.5); opacity: 1; color: #fff; }
        75% { text-shadow: 0 0 5px rgba(197,160,89, 0.4); opacity: 0.85; color: #fdfbf7; }
    }
    @keyframes candleIcon {
        0%, 100% { filter: drop-shadow(0 0 8px rgba(197,160,89, 0.8)); transform: scale(1); }
        25% { filter: drop-shadow(0 0 3px rgba(197,160,89, 0.3)); transform: scale(0.98); }
        50% { filter: drop-shadow(0 0 12px rgba(197,160,89, 1)); transform: scale(1.02); }
        75% { filter: drop-shadow(0 0 4px rgba(197,160,89, 0.4)); transform: scale(0.99); }
    }

    /* NEW: PANEL CANDLE GLOW EFFECT (Ánh nến phủ nền Box) */
    @keyframes candlePanel {
        0%, 100% { 
            background-color: rgba(197, 160, 89, 0.1);
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5), 0 0 25px rgba(197, 160, 89, 0.15), inset 0 0 20px rgba(197, 160, 89, 0.1);
            border-color: rgba(197, 160, 89, 0.3);
        }
        25% { 
            background-color: rgba(197, 160, 89, 0.04);
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5), 0 0 10px rgba(197, 160, 89, 0.05), inset 0 0 5px rgba(197, 160, 89, 0.05);
            border-color: rgba(255, 255, 255, 0.15);
        }
        50% { 
            background-color: rgba(197, 160, 89, 0.2);
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5), 0 0 45px rgba(197, 160, 89, 0.35), inset 0 0 40px rgba(197, 160, 89, 0.2);
            border-color: rgba(197, 160, 89, 0.5);
        }
        75% { 
            background-color: rgba(197, 160, 89, 0.08);
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5), 0 0 15px rgba(197, 160, 89, 0.1), inset 0 0 10px rgba(197, 160, 89, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
        }
    }

    .anim-reveal-up { animation: revealUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards; transform: translateY(110%); opacity: 0; }
    .anim-grow-line { animation: growLine 1.5s ease-out forwards; }
    .anim-fade-in { animation: fadeIn 0.8s ease-out forwards; opacity: 0; }
    .anim-float { animation: float 6s ease-in-out infinite; }
    .anim-subtle-glow { animation: subtleGlow 4s ease-in-out infinite; }
    .anim-gentle-shake { animation: gentleShake 4s infinite ease-in-out; transform-origin: center; }
    .anim-candle-text { animation: candleText 4s infinite alternate ease-in-out; }
    .anim-candle-icon { animation: candleIcon 4s infinite alternate ease-in-out; }
    .anim-candle-panel { animation: candlePanel 4s infinite alternate ease-in-out; }

    .delay-200 { animation-delay: 0.2s; }
    .delay-400 { animation-delay: 0.4s; }
    .delay-600 { animation-delay: 0.6s; }
    .delay-800 { animation-delay: 0.8s; }
    .delay-1200 { animation-delay: 1.2s; }
    .delay-1500 { animation-delay: 1.5s; }

    /* ==========================================================================
       3. NAVBAR & HEADER (UPGRADED)
       ========================================================================== */
    .navbar {
        position: fixed; top: 0; left: 0; right: 0; z-index: 50;
        padding: 24px 0; transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        background: transparent; border-bottom: 1px solid transparent;
    }
    .navbar.scrolled {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
        padding: 16px 0; border-bottom: 1px solid rgba(0,0,0,0.05);
        box-shadow: 0 4px 30px rgba(0,0,0,0.03);
    }
    .nav-container { display: flex; justify-content: space-between; align-items: center; }

    .logo a { display: flex; flex-direction: column; justify-content: center; }
    .logo h1 {
        font-size: 20px; transition: color 0.4s; color: var(--c-white);
        letter-spacing: 0.15em; line-height: 1; margin-bottom: 6px;
    }
    .logo span {
        font-size: 9px; display: block;
        background: linear-gradient(to right, #C5A059, #E5C07B);
        -webkit-background-clip: text; color: transparent;
        text-transform: uppercase; letter-spacing: 0.35em; font-weight: 600; line-height: 1;
    }
    .navbar.scrolled .logo h1 { color: var(--c-dark); }

    @media (min-width: 768px) {
        .logo h1 { font-size: 24px; }
        .logo span { font-size: 10px; }
    }

    .nav-links { display: none; gap: 40px; }
    @media (min-width: 1024px) { .nav-links { display: flex; } }
    
    .nav-links a {
        font-size: 12px; font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase;
        color: var(--c-white); transition: color 0.3s; position: relative; padding: 4px 0;
    }
    .nav-links a::after {
        content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
        width: 0; height: 1px; background: var(--c-gold); transition: width 0.3s ease;
    }
    .nav-links a:hover { color: var(--c-gold) !important; }
    .nav-links a:hover::after { width: 100%; }
    .navbar.scrolled .nav-links a { color: var(--c-dark); }

    .nav-actions { display: flex; align-items: center; gap: 20px; }
    
    .btn-outline {
        display: none; padding: 12px 28px; border: 1px solid rgba(255,255,255,0.3);
        color: var(--c-white); font-size: 11px; font-weight: 600; letter-spacing: 0.2em;
        text-transform: uppercase; transition: var(--transition);
        background: rgba(255,255,255,0.05); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
        cursor: pointer; font-family: inherit; text-align: center;
    }
    .btn-outline:hover { background: var(--c-gold); border-color: var(--c-gold); color: var(--c-white) !important; box-shadow: 0 0 20px rgba(197,160,89,0.3); }
    .navbar.scrolled .btn-outline { border-color: rgba(26,26,26,0.2); color: var(--c-dark); }
    .navbar.scrolled .btn-outline:hover { background: var(--c-dark); border-color: var(--c-dark); color: var(--c-white) !important; }
    @media (min-width: 768px) { .btn-outline { display: block; } }

    .menu-toggle { display: block; color: var(--c-white); padding: 8px; transition: color 0.3s; }
    .navbar.scrolled .menu-toggle { color: var(--c-dark); }
    @media (min-width: 1024px) { .menu-toggle { display: none; } }

    /* Mobile Menu */
    .mobile-menu {
        position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
        background: rgba(26,26,26,0.98); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
        z-index: 100; display: flex; flex-direction: column; justify-content: center; align-items: center;
        opacity: 0; pointer-events: none; transition: all 0.5s ease; transform: translateY(-20px);
    }
    .mobile-menu.active { opacity: 1; pointer-events: all; transform: translateY(0); }
    .mobile-link {
        color: var(--c-white); font-size: 20px; font-family: var(--font-serif);
        margin: 16px 0; text-transform: uppercase; letter-spacing: 0.15em;
        transition: color 0.3s, transform 0.3s;
    }
    .mobile-link:hover { color: var(--c-gold); transform: translateY(-2px); }
    .btn-mobile-cta {
        color: var(--c-gold); font-family: var(--font-sans); font-size: 12px; font-weight: 500;
        border: 1px solid var(--c-gold); padding: 14px 32px; margin-top: 32px;
        text-transform: uppercase; letter-spacing: 0.2em; transition: var(--transition);
        cursor: pointer; background: transparent;
    }
    .btn-mobile-cta:hover { background: var(--c-gold); color: var(--c-white); }

    /* ==========================================================================
       4. HERO SECTION
       ========================================================================== */
    .hero {
        position: relative; height: 100vh; min-height: 600px;
        display: flex; align-items: center; overflow: hidden; background: var(--c-dark);
    }
    .hero-slider { position: absolute; inset: 0; z-index: 0; }
    .hero-slide {
        position: absolute; inset: 0; opacity: 0;
        transition: opacity 2s ease-in-out;
    }
    .hero-slide.active { opacity: 1; z-index: 10; }
    .hero-slide img {
        width: 100%; height: 100%; object-fit: cover;
        animation: kenBurns 10s ease-out infinite alternate;
    }
    .hero-overlay {
        position: absolute; inset: 0; z-index: 20;
        background: linear-gradient(to right, rgba(26,26,26,0.9), rgba(26,26,26,0.5), transparent),
                    linear-gradient(to bottom, rgba(26,26,26,0.4), transparent, rgba(26,26,26,0.8));
    }

    .hero-content {
        position: relative; z-index: 30; width: 100%;
        display: flex; flex-direction: column; justify-content: center;
    }
    .hero-wrapper { max-width: 800px; margin-top: 80px; }
    
    .mask-wrapper { overflow: hidden; display: inline-block; vertical-align: bottom; width: 100%; }
    
    .hero-title-1 { font-size: 44px; color: var(--c-white); line-height: 1.1; font-weight: 300;}
    .hero-title-2 { font-size: 32px; color: rgba(255,255,255,0.9); line-height: 1.1; font-style: italic; font-weight: 300; }
    @media (min-width: 768px) {
        .hero-title-1 { font-size: 72px; 
        line-height: 1.3;}
        .hero-title-2 { font-size: 60px; 
          line-height: 1.3;
        }
    }
    @media (min-width: 1024px) {
        .hero-title-1 { font-size: 90px; }
        .hero-title-2 { font-size: 75px; }
    }

    .hero-desc {
        color: rgba(255,255,255,0.7); font-weight: 300; font-size: 16px;
        max-width: 600px; margin: 30px 0 48px; letter-spacing: 0.05em;
    }

    .btn-shimmer {
        position: relative; display: inline-flex; align-items: center; justify-content: center;
        padding: 16px 32px; background: var(--c-gold); color: var(--c-white);
        font-size: 12px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase;
        overflow: hidden; transition: var(--transition);
        border-radius: 12px;
        cursor: pointer; font-family: inherit; border: none;
    }
    .btn-shimmer:hover { background: var(--c-gold-hover); box-shadow: 0 0 30px rgba(197,160,89,0.4); }
    .btn-shimmer::after {
        content: ''; position: absolute; top: 0; left: 0; width: 50%; height: 100%;
        background: linear-gradient(to right, transparent, rgba(255,255,255,0.3), transparent);
        transform: translateX(-100%) skewX(-15deg); animation: shimmer 3s infinite;
        pointer-events: none;
    }

    .hero-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap;}
    .watch-video { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,0.7); transition: color 0.3s; cursor: pointer;}
    .watch-video:hover { color: var(--c-white); }
    .watch-icon {
        width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.3);
        display: flex; align-items: center; justify-content: center; transition: border-color 0.3s;
    }
    .watch-video:hover .watch-icon { border-color: var(--c-gold); }
    .watch-video:hover .watch-icon svg { color: var(--c-gold); }

    /* Floating Stats (COMPACT EDITORIAL DESIGN) */
    .hero-stats {
        position: absolute; bottom: 40px; right: 24px; z-index: 30;
        display: none; /* hidden on mobile */
    }
    @media (min-width: 1024px) { .hero-stats { display: block; right: 48px; } }
    
    .stats-panel {
        background: rgba(255,255,255,0.1); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
        border: 1px solid rgba(255,255,255,0.2); 
        padding: 16px 28px; /* Reduced padding */
        display: flex; gap: 24px; /* Reduced gap */
        box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
        position: relative; overflow: hidden;
        border-radius: 12px;
    }
    .stats-panel::before {
        content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 1px;
        background: linear-gradient(to right, transparent, var(--c-gold), transparent); opacity: 0.5;
    }
    .stat-item h3 { 
        font-size: 24px; /* Reduced font-size */
        font-weight: 400; color: var(--c-white); margin-bottom: 2px; display: flex; align-items: baseline; gap: 4px;
    }
    .stat-item h3 span { 
        font-size: 12px; /* Reduced font-size */
        font-family: var(--font-sans); color: var(--c-gold); 
    }
    .stat-item p { 
        font-size: 9px; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 0.15em; 
        display: flex; align-items: center; gap: 4px;
    }
    .stat-item p svg { width: 10px; height: 10px; } /* Smaller icon */
    
    .stat-divider { width: 1px; background: rgba(255,255,255,0.1); }

    .progress-line-container { position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: rgba(255,255,255,0.1); z-index: 30;}
    .progress-line-bar { height: 100%; background: var(--c-gold); animation: slideRight 5s linear infinite; }

    /* ==========================================================================
       5. GENERAL SECTIONS
       ========================================================================== */
    section { padding: 80px 0; }
    @media (min-width: 768px) { section { padding: 128px 0; } }

    .section-label {
        display: flex; align-items: center; gap: 16px; margin-bottom: 24px;
    }
    .section-label::before { content: ''; height: 1px; width: 48px; background: var(--c-gold); }
    .section-label span { color: var(--c-gold); text-transform: uppercase; letter-spacing: 0.3em; font-size: 12px; font-weight: 600; }

    .section-title { font-size: 36px; font-weight: 400; line-height: 1.2; margin-bottom: 24px;}
    .section-title span.italic { font-style: italic; font-weight: 300; font-size: 30px; display: block; margin-top: 8px;}
    @media (min-width: 768px) {
        .section-title { font-size: 48px; }
        .section-title span.italic { font-size: 36px; }
    }

    .grid-2 { display: grid; grid-template-columns: 1fr; gap: 64px; align-items: center;}
    @media (min-width: 1024px) { .grid-2 { grid-template-columns: 1fr 1fr; } }

    /* ==========================================================================
       6. OVERVIEW SECTION
       ========================================================================== */
    .overview-desc { color: rgba(26,26,26,0.7); font-size: 18px; font-weight: 300; margin-bottom: 40px; }
    .factsheet {
        display: grid; grid-template-columns: 1fr; gap: 24px;
        border-top: 1px solid rgba(26,26,26,0.1); padding-top: 32px;
    }
    @media (min-width: 640px) { .factsheet { grid-template-columns: 1fr 1fr; } }
    .fact-item .label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.2em; color: rgba(26,26,26,0.5); margin-bottom: 4px; }
    .fact-item .value { font-weight: 500; color: var(--c-dark); }

    .overview-img-wrapper { position: relative; }
    .overview-img-wrapper::before {
        content: ''; position: absolute; top: -16px; left: -16px; right: -16px; bottom: -16px;
        border: 1px solid rgba(197,160,89,0.3); transform: translate(16px, 16px);
        transition: transform 0.5s ease; pointer-events: none;
    }
    .overview-img-wrapper:hover::before { transform: translate(8px, 8px); }
    .overview-img-wrapper img { width: 100%; height: 550px; object-fit: cover; position: relative; z-index: 10; }
    
    .badge-float {
        position: absolute; bottom: -24px; left: -24px; z-index: 20;
        background: var(--c-white); padding: 24px; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
        border-top: 4px solid var(--c-gold); max-width: 200px;
    }
    .badge-float h4 { font-size: 18px; font-weight: 400; line-height: 1.2; margin: 12px 0 8px; }
    .badge-float p { font-size: 12px; color: rgba(26,26,26,0.5); }

    /* ==========================================================================
       7. ECOSYSTEM SECTION
       ========================================================================== */
    .bg-dark { background-color: var(--c-dark); color: var(--c-white); }
    
    .ecosystem-grid {
        display: grid; grid-template-columns: 1fr; gap: 24px;
    }
    @media (min-width: 768px) { .ecosystem-grid { grid-template-columns: 1fr 1fr; } }
    @media (min-width: 1024px) { .ecosystem-grid { grid-template-columns: repeat(4, 1fr); } }

    .eco-card {
        background: var(--c-dark); border: 1px solid rgba(255,255,255,0.1);
        padding: 32px; position: relative; overflow: hidden;
        transition: var(--transition);
    }
    .eco-card:hover { transform: translateY(-12px); box-shadow: 0 15px 40px -10px rgba(197,160,89,0.2); }
    
    .eco-card-bg {
        position: absolute; inset: 0; background: linear-gradient(135deg, rgba(197,160,89,0.1), transparent);
        opacity: 0; transition: opacity 0.5s;
    }
    .eco-card:hover .eco-card-bg { opacity: 1; }
    
    .eco-icon-wrapper {
        width: 56px; height: 56px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.1);
        background: rgba(255,255,255,0.05); display: flex; align-items: center; justify-content: center;
        margin-bottom: 24px; transition: var(--transition); position: relative; z-index: 10;
    }
    .eco-card:hover .eco-icon-wrapper { border-color: rgba(197,160,89,0.5); background: rgba(197,160,89,0.1); }
    .eco-icon-wrapper svg { color: var(--c-gold); transition: var(--transition); }
    .eco-card:hover .eco-icon-wrapper svg { transform: scale(1.1) rotate(-12px); }
    .eco-card:nth-child(even):hover .eco-icon-wrapper svg { transform: scale(1.1) rotate(12px); }

    .eco-card h3 {
        font-size: 24px; font-weight: 400; margin-bottom: 12px; position: relative; z-index: 10;
        transition: color 0.3s;
    }
    .eco-card:hover h3 { color: var(--c-gold); }
    
    .eco-line {
        height: 1px; width: 32px; background: rgba(197,160,89,0.5); margin-bottom: 20px;
        position: relative; z-index: 10; transition: var(--transition);
    }
    .eco-card:hover .eco-line { width: 64px; background: var(--c-gold); }

    .eco-card p {
        color: rgba(255,255,255,0.6); font-size: 14px; font-weight: 300; position: relative; z-index: 10;
        transition: color 0.3s;
    }
    .eco-card:hover p { color: rgba(255,255,255,0.8); }

    /* ==========================================================================
       8. PRODUCTS & PRICE SECTION
       ========================================================================== */
    .bg-cream { background-color: #FFFDF5; }
    
    .price-img-container { position: relative; order: 2;}
    @media (min-width: 1024px) { .price-img-container { order: 1; } }
    .price-img-bg { position: absolute; inset: 0; background: var(--c-gold); transform: translate(12px, 12px); }
    .price-img-container img { position: relative; z-index: 10; width: 100%; height: 600px; object-fit: cover; }

    .price-tag {
        position: absolute; top: 40px; right: -16px; z-index: 20;
        background: var(--c-dark); color: var(--c-white); padding: 32px;
        max-width: 280px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
        border: 1px solid rgba(197,160,89,0.3); transition: var(--transition);
    }
    @media (min-width: 1024px) { .price-tag { right: -40px; } }
    .price-tag:hover {
        transform: scale(1.05) translateY(-15px); /* Combine scale and float offset for hover */
        box-shadow: 0 0 40px rgba(197,160,89,0.3);
    }
    
    .price-tag-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.2em; color: var(--c-gold); margin-bottom: 8px; transition: color 0.3s;}
    .price-tag:hover .price-tag-label { color: var(--c-white); }
    
    .price-tag-value {
        font-size: 48px; font-family: var(--font-serif); margin-bottom: 4px;
        background: linear-gradient(to right, #fff, #fff); -webkit-background-clip: text; color: transparent;
        transition: var(--transition);
    }
    .price-tag:hover .price-tag-value { background: linear-gradient(to right, var(--c-gold), #fff); -webkit-background-clip: text; }
    
    .price-tag-unit {
        font-size: 12px; font-weight: 300; color: rgba(255,255,255,0.6); text-transform: uppercase;
        letter-spacing: 0.2em; border-bottom: 1px solid rgba(255,255,255,0.2); padding-bottom: 16px; margin-bottom: 16px;
    }
    
    .price-features { list-style: none; }
    .price-features li { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 300; color: rgba(255,255,255,0.8); margin-bottom: 8px;}
    .price-features li svg { color: var(--c-gold); width: 16px; height: 16px; transition: transform 0.3s; }
    .price-tag:hover .price-features li:nth-child(1) svg { transform: scale(1.25); }
    .price-tag:hover .price-features li:nth-child(2) svg { transform: scale(1.25); transition-delay: 0.075s; }
    .price-tag:hover .price-features li:nth-child(3) svg { transform: scale(1.25); transition-delay: 0.15s; }

    .product-info { order: 1; }
    @media (min-width: 1024px) { .product-info { order: 2; } }
    
    .policy-list { display: flex; flex-direction: column; gap: 24px; }
    .policy-item {
        background: var(--c-white); border: 1px solid rgba(26,26,26,0.1); padding: 24px;
        display: flex; align-items: flex-start; gap: 24px; transition: box-shadow 0.3s;
    }
    .policy-item:hover { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); }
    .policy-value { font-family: var(--font-serif); font-size: 30px; color: var(--c-dark); width: 80px; flex-shrink: 0;}
    .policy-value.gold { color: var(--c-gold); }
    .policy-value span { font-size: 18px; }
    .policy-text h4 { font-size: 18px; font-weight: 500; color: var(--c-dark); margin-bottom: 4px; }
    .policy-text p { font-size: 14px; font-weight: 300; color: rgba(26,26,26,0.6); }

    /* ==========================================================================
       9. PAYMENT SCHEDULE SECTION
       ========================================================================== */
    .payment-timeline {
        display: flex; flex-direction: column; position: relative;
    }
    .payment-timeline::before {
        content: ''; position: absolute; top: 12px; left: 11px; width: 1px; height: calc(100% - 24px);
        background: rgba(197,160,89,0.3);
    }
    .timeline-item {
        display: flex; gap: 32px; position: relative; padding-bottom: 48px;
    }
    .timeline-item:last-child { padding-bottom: 0; }
    .tl-dot {
        width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--c-gold);
        background: var(--c-dark); position: relative; z-index: 10; flex-shrink: 0;
        display: flex; align-items: center; justify-content: center;
        box-shadow: 0 0 10px rgba(197,160,89,0.2);
        transition: var(--transition);
    }
    .tl-dot::after {
        content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--c-gold);
        opacity: 0; transition: var(--transition);
    }
    .timeline-item:hover .tl-dot {
        box-shadow: 0 0 15px rgba(197,160,89,0.6);
        transform: scale(1.1);
    }
    .timeline-item:hover .tl-dot::after { opacity: 1; }
    
    .tl-content { margin-top: -4px; }
    .tl-content h4 { font-size: 20px; font-weight: 500; margin-bottom: 8px; }
    .tl-content p { font-size: 14px; font-weight: 300; color: rgba(255,255,255,0.6); }

    /* ==========================================================================
       10. GALLERY & VIDEO SECTION (YOUTUBE IFRAME UPGRADE)
       ========================================================================== */
    .media-header { display: flex; flex-direction: column; gap: 24px; margin-bottom: 64px; }
    @media (min-width: 768px) { .media-header { flex-direction: row; align-items: flex-end; justify-content: space-between; } }
    .media-header p { color: rgba(26,26,26,0.6); font-weight: 300; max-width: 380px; }
    @media (min-width: 768px) { .media-header p { text-align: right; } }

    .gallery-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
    @media (min-width: 1024px) { .gallery-grid { grid-template-columns: 7fr 5fr; } }

    /* Khung như HTML mẫu (cột trái cao cố định, căn hàng với lưới ảnh 3×2). Cover 16:9 không dùng scale() → không mờ (iframe đủ pixel). */
    .video-container {
        position: relative;
        background: var(--c-dark);
        width: 100%;
        height: 400px;
        overflow: hidden;
        container-type: size;
        container-name: videobox;
    }
    @media (min-width: 768px) {
        .video-container { height: 600px; }
    }

    .video-container iframe,
    .video-container video {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        border: none;
        pointer-events: none;
        opacity: 1;
        aspect-ratio: 16 / 9;
        /* Fallback khi trình duyệt không có container queries: cột thường hẹp hơn 16:9 → đầy chiều cao */
        height: 100%;
        width: auto;
        max-height: none;
    }

    /* Khung “rộng” hơn 16:9: đầy chiều ngang, crop trên/dưới */
    @container videobox (min-aspect-ratio: 16 / 9) {
        .video-container iframe,
        .video-container video {
            width: 100%;
            height: auto;
            max-width: none;
        }
    }

    /* Khung “hẹp” hơn 16:9 (điển hình desktop 7fr): đầy chiều cao 600px, crop trái/phải */
    @container videobox (max-aspect-ratio: 16 / 9) {
        .video-container iframe,
        .video-container video {
            height: 100%;
            width: auto;
            max-height: none;
        }
    }

    .video-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(26,26,26,0.8), transparent, rgba(26,26,26,0.3)); pointer-events: none; }
    .video-badge {
        position: absolute; top: 24px; left: 24px; background: var(--c-gold); color: var(--c-white);
        font-size: 10px; padding: 8px 16px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase; box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        pointer-events: none;
    }

    .video-click-layer {
        position: absolute; inset: 0; z-index: 6;
        cursor: pointer;
    }

    .video-container:focus-visible {
        outline: 2px solid rgba(197,160,89,0.75);
        outline-offset: 3px;
    }

    .mute-btn {
        position: absolute; bottom: 24px; right: 24px; background: rgba(255,255,255,0.1); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
        border: 1px solid rgba(255,255,255,0.2); color: var(--c-white); padding: 16px; border-radius: 50%;
        display: flex; align-items: center; justify-content: center; transition: background 0.3s; z-index: 10;
    }
    .mute-btn:hover { background: rgba(255,255,255,0.3); }

    .image-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .grid-img {
        position: relative; background: #e5e7eb; height: 140px; overflow: hidden; cursor: pointer;
    }
    @media (min-width: 768px) { .grid-img { height: 190px; } }
    .grid-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease-in-out; }
    .grid-img:hover img { transform: scale(1.1); }
    
    .img-overlay {
        position: absolute; inset: 0; background: transparent; display: flex; align-items: center; justify-content: center;
        transition: background 0.3s;
    }
    .grid-img:hover .img-overlay { background: rgba(26,26,26,0.4); }
    .img-overlay svg { color: var(--c-white); opacity: 0; transform: scale(0.5); transition: all 0.3s; }
    .grid-img:hover .img-overlay svg { opacity: 1; transform: scale(1); }

    .img-overlay-more {
        position: absolute; inset: 0; background: rgba(26,26,26,0.7); display: flex; align-items: center; justify-content: center;
        transition: background 0.3s;
    }
    .grid-img:hover .img-overlay-more { background: rgba(26,26,26,0.6); }
    .img-overlay-more span { color: var(--c-white); font-family: var(--font-serif); font-size: 24px; font-weight: 500; letter-spacing: 0.1em; }
    @media (min-width: 768px) { .img-overlay-more span { font-size: 30px; } }

    /* ==========================================================================
       11. BRANDING SECTION
       ========================================================================== */
    .brand-header { text-align: center; max-width: 900px; margin: 0 auto 64px; }
    .brand-header svg { color: var(--c-gold); width: 48px; height: 48px; margin: 0 auto 32px; }
    .brand-header h2 { font-size: 30px; font-weight: 500; line-height: 1.2; margin-bottom: 32px; }
    @media (min-width: 768px) { .brand-header h2 { font-size: 48px; } }
    .brand-header p { font-size: 18px; font-weight: 300; color: rgba(255,255,255,0.6); max-width: 670px; margin: 0 auto; }

    .brand-features { display: grid; grid-template-columns: 1fr; gap: 32px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 64px; text-align: center;}
    @media (min-width: 640px) { .brand-features { grid-template-columns: repeat(3, 1fr); } }
    
    .b-feature svg { color: var(--c-gold); width: 32px; height: 32px; margin: 0 auto 16px; transition: transform 0.5s; }
    .b-feature:hover svg { transform: scale(1.1); }
    .b-feature h4 { font-family: var(--font-serif); font-size: 20px; margin-bottom: 8px; transition: all 0.5s; }
    .b-feature:hover h4 { text-shadow: 0 0 15px rgba(197,160,89,0.7); color: var(--c-gold); }
    .b-feature p { font-size: 14px; font-weight: 300; color: rgba(255,255,255,0.5); transition: all 0.5s; }
    .b-feature:hover p { color: rgba(255,255,255,0.8); text-shadow: 0 0 10px rgba(255,255,255,0.5); }

    /* ==========================================================================
       12. FORM SECTION
       ========================================================================== */
    .form-container { max-width: 900px; margin: 0 auto; }
    .form-box { background: var(--c-white); border: 1px solid rgba(26,26,26,0.1); padding: 40px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25); }
    @media (min-width: 768px) { .form-box { padding: 64px; } }
    
    .form-header { text-align: center; margin-bottom: 48px; }
    .form-header h2 { font-family: var(--font-serif); font-size: 30px; margin-bottom: 16px; }
    @media (min-width: 768px) { .form-header h2 { font-size: 36px; } }
    .form-header p { font-weight: 300; color: rgba(26,26,26,0.6); }

    .input-grid { display: grid; grid-template-columns: 1fr; gap: 32px; margin-bottom: 32px; }
    @media (min-width: 768px) { .input-grid { grid-template-columns: 1fr 1fr; } }
    
    .input-group { position: relative; }
    .input-group input {
        width: 100%; padding: 12px 0; font-size: 16px; color: var(--c-dark);
        border-bottom: 1px solid rgba(26,26,26,0.2); transition: border-color 0.3s;
    }
    .input-group input:focus { border-color: var(--c-gold); }
    .input-group label {
        position: absolute; left: 0; top: 12px; font-size: 16px; color: rgba(26,26,26,0.5);
        transition: all 0.3s; pointer-events: none;
    }
    /* Floating label trick */
    .input-group input:focus ~ label,
    .input-group input:not(:placeholder-shown) ~ label {
        top: -14px; font-size: 12px; color: var(--c-gold);
    }

    .form-submit { text-align: center; margin-top: 16px; }
    .btn-submit {
        background: var(--c-dark); color: var(--c-white); padding: 20px 48px; width: 100%;
        font-size: 14px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase;
        transition: background 0.5s;
    }
    @media (min-width: 768px) { .btn-submit { width: auto; } }
    .btn-submit:hover { background: var(--c-gold); }
    .form-disclaimer { font-size: 11px; color: rgba(26,26,26,0.4); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 24px; }

    .success-msg { text-align: center; padding: 64px 0; }
    .success-msg.hidden { display: none !important; }
    .success-msg:not(.hidden) { display: block !important; }
    .success-icon { width: 64px; height: 64px; border-radius: 50%; background: rgba(197,160,89,0.1); display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; }
    .success-icon svg { color: var(--c-gold); width: 32px; height: 32px; }
    .success-msg h3 { font-family: var(--font-serif); font-size: 24px; margin-bottom: 8px; }
    .success-msg p { font-weight: 300; color: rgba(26,26,26,0.6); }

    /* ==========================================================================
       13. FOOTER
       ========================================================================== */
    footer { padding: 80px 0 40px; border-top: 1px solid rgba(255,255,255,0.05); }
    .footer-grid { display: grid; grid-template-columns: 1fr; gap: 48px; margin-bottom: 64px; }
    @media (min-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
    @media (min-width: 1024px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; gap: 32px; } }

    .f-brand h3 { font-family: var(--font-serif); font-size: 24px; font-weight: 500; line-height: 1.2; margin-bottom: 24px; }
    @media (min-width: 768px) { .f-brand h3 { font-size: 30px; } }
    .f-brand .brand-white { display: block; color: var(--c-white); }
    .f-brand .brand-gold { display: block; background: linear-gradient(to right, #C5A059, #E5C07B); -webkit-background-clip: text; color: transparent; }
    .f-brand p { color: rgba(255,255,255,0.5); font-size: 14px; font-weight: 300; max-width: 400px; }

    .f-col h4 { color: var(--c-white); font-weight: 500; text-transform: uppercase; letter-spacing: 0.2em; font-size: 12px; margin-bottom: 24px; }
    .f-col ul { display: flex; flex-direction: column; gap: 16px; color: rgba(255,255,255,0.6); font-size: 14px; font-weight: 300; }
    .f-col li { display: flex; align-items: flex-start; gap: 12px; }
    .f-col svg { color: var(--c-gold); width: 20px; height: 20px; flex-shrink: 0; }
    .f-col a { transition: color 0.3s; }
    .f-col a.f-contact-link { color: inherit; text-decoration: none; }
    .f-col a:hover { color: var(--c-gold); }

    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 32px; display: flex; flex-direction: column; gap: 16px; align-items: center; font-size: 12px; font-weight: 300; color: rgba(255,255,255,0.4); letter-spacing: 0.05em; text-align: center;}
    @media (min-width: 768px) { .footer-bottom { flex-direction: row; justify-content: space-between; text-align: left;} }

    /* Floating Call */
    .floating-call {
        position: fixed; bottom: 24px; right: 24px; z-index: 50;
        width: 56px; height: 56px; border-radius: 50%; background: var(--c-gold); color: var(--c-white);
        display: flex; align-items: center; justify-content: center; box-shadow: 0 0 20px rgba(197,160,89,0.5);
    }
    @media (min-width: 768px) { .floating-call { display: none; } }

    /* ==========================================================================
       14. LIGHTBOX GALLERY
       ========================================================================== */
    /* Video fullscreen modal (above gallery lightbox) */
    .video-modal {
        position: fixed; inset: 0; z-index: 105;
        display: none; align-items: center; justify-content: center;
        padding:
            max(16px, env(safe-area-inset-top))
            max(16px, env(safe-area-inset-right))
            max(28px, env(safe-area-inset-bottom))
            max(16px, env(safe-area-inset-left));
        background: radial-gradient(ellipse 120% 90% at 50% 38%, rgba(42,36,28,0.96) 0%, rgba(10,10,12,0.99) 62%);
        backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    }
    .video-modal.active { display: flex; }
    .video-modal-close {
        position: absolute;
        top: max(14px, env(safe-area-inset-top)); right: max(14px, env(safe-area-inset-right));
        z-index: 115; color: rgba(255,255,255,0.72); padding: 10px; border-radius: 50%;
        transition: color 0.25s ease, background 0.25s ease;
    }
    .video-modal-close:hover { color: var(--c-white); background: rgba(255,255,255,0.08); }

    .video-modal-dialog {
        position: relative; width: min(1120px, 96vw);
        max-height: calc(100vh - 56px);
        border-radius: 8px; overflow: hidden;
        box-shadow:
            0 0 0 1px rgba(197,160,89,0.45),
            0 0 48px rgba(197,160,89,0.14),
            0 52px 100px rgba(0,0,0,0.58);
        animation: vspVideoModalIn 0.48s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    }
    @keyframes vspVideoModalIn {
        from { opacity: 0; transform: scale(0.93) translateY(18px); }
        to { opacity: 1; transform: scale(1) translateY(0); }
    }

    .video-modal-aspect {
        aspect-ratio: 16 / 9; background: #070707;
    }
    .video-modal-aspect iframe {
        width: 100%; height: 100%; border: none; display: block;
    }

    @media (prefers-reduced-motion: reduce) {
        .video-modal-dialog { animation: none; }
    }

    .lightbox {
        position: fixed; inset: 0; z-index: 100; background: rgba(26,26,26,0.95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
        display: none; align-items: center; justify-content: center;
    }
    .lightbox.active { display: flex; }
    
    .lb-close { position: absolute; top: 24px; right: 24px; color: rgba(255,255,255,0.7); padding: 8px; z-index: 110; transition: color 0.3s;}
    .lb-close:hover { color: var(--c-white); background: rgba(255,255,255,0.1); border-radius: 50%; }
    
    .lb-content { position: relative; width: 100%; max-width: 1152px; padding: 0 16px; height: 100%; display: flex; align-items: center; justify-content: center;}
    @media (min-width: 768px) { .lb-content { padding: 0 48px; } }
    
    .lb-img-wrapper { position: relative; width: 100%; height: 60vh; display: flex; align-items: center; justify-content: center;}
    @media (min-width: 768px) { .lb-img-wrapper { height: 80vh; } }
    .lb-img { max-width: 100%; max-height: 100%; object-fit: contain; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); }
    
    .lb-progress-bg { position: absolute; bottom: -24px; left: 0; width: 100%; height: 2px; background: rgba(255,255,255,0.2); overflow: hidden; }
    @media (min-width: 768px) { .lb-progress-bg { bottom: -40px; } }
    .lb-progress-bar { height: 100%; background: var(--c-gold); width: 0; }
    .lb-progress-bar.animate { animation: slideRight 3s linear forwards; }

    .lb-nav { position: absolute; top: 50%; transform: translateY(-50%); color: rgba(255,255,255,0.5); padding: 12px; transition: all 0.3s; z-index: 110;}
    .lb-nav:hover { color: var(--c-white); background: rgba(255,255,255,0.1); border-radius: 50%; }
    .lb-prev { left: 16px; }
    .lb-next { right: 16px; }
    @media (min-width: 768px) { .lb-prev { left: 48px; } .lb-next { right: 48px; } }
    
    .lb-counter { position: absolute; bottom: 24px; right: 24px; color: rgba(255,255,255,0.5); font-size: 14px; letter-spacing: 0.1em; }
    @media (min-width: 768px) { .lb-counter { bottom: 40px; right: 48px; } }

/* Bổ sung theo markup gốc (class được JS/HTML gọi nhưng không có trong khối style của file HTML). */
.anim-fade-in-quick { animation: fadeIn 0.35s ease-out forwards; }
.payment-timeline .text-glow-hover { transition: color 0.3s, text-shadow 0.3s; }
.payment-timeline .timeline-item:hover .text-glow-hover { color: rgba(255,255,255,0.95); text-shadow: 0 0 12px rgba(255,255,255,0.15); }
.payment-timeline .text-gold-glow-hover { transition: color 0.3s, text-shadow 0.3s; }
.payment-timeline .timeline-item:hover .text-gold-glow-hover {
    color: var(--c-gold);
    text-shadow: 0 0 18px rgba(197,160,89,0.45);
}

/* Hiển thị lỗi SĐT chuẩn thư viện (.hidden không phụ thuộc Tailwind). */
.vsp-phone-error { color: #b91c1c; font-size: 13px; margin-bottom: 1rem; text-align: left; }
.vsp-phone-error.hidden { display: none !important; }

#dia-oc-dai-chung .brand-features .text-gold-glow-hover { transition: color 0.3s, text-shadow 0.3s; }
#dia-oc-dai-chung .brand-features .b-feature:hover .text-gold-glow-hover {
    color: var(--c-gold);
    text-shadow: 0 0 15px rgba(197,160,89,0.7);
}
#dia-oc-dai-chung .brand-features .text-glow-hover { transition: color 0.3s, text-shadow 0.3s; }
#dia-oc-dai-chung .brand-features .b-feature:hover .text-glow-hover {
    color: rgba(255,255,255,0.95);
}