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

        :root {
            /* Palette từ ảnh pixel art 833312.png */
            --sky-top: #b8a4d8;       /* tím lavender bầu trời */
            --sky-mid: #e8a07a;       /* hồng cam hoàng hôn */
            --city-dark: #3a2d4a;     /* tím tối toà nhà */
            --night-teal: #1a2e35;    /* teal đêm phía dưới */
            --accent-gold: #f0c060;   /* vàng mặt trời */
            --accent-pink: #e8708a;   /* hồng đèn đô thị */
            --accent-cyan: #60c8a8;   /* cyan cửa sổ đêm */
            --text-light: #f5eeff;
            --glass-bg: rgba(30, 15, 50, 0.25);
            --glass-border: rgba(200, 170, 255, 0.2);
        }

        html { scroll-behavior: smooth; }

        body {
            font-family: 'Nunito', sans-serif;
            overflow-x: hidden;
            background-color: #0d0a18;
            background-image: url('../uploads/nen.png');
            background-repeat: no-repeat;
            background-size: cover;
            background-position: center top;
            background-attachment: scroll;
            color: var(--text-light);
        }

        /* ===========================
           PARALLAX SCENE SYSTEM
           Ảnh 833312.png: 750x1334px (9:16 dọc)
           4 vùng: 0-30% bầu trời, 30-55% toà nhà cao,
                   55-75% đường phố đêm, 75-100% tối/phản chiếu
        =========================== */
        .scene-wrapper {
            position: relative;
        }

        .parallax-section {
            position: relative;
            width: 100%;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        /*
         * .parallax-bg: chiếm toàn bộ section + thêm 40% trên/dưới
         * background-size: cover đảm bảo ảnh luôn fill chiều ngang
         * Vì ảnh dọc 9:16, trên màn hình ngang (16:9) ảnh sẽ scale
         * theo chiều rộng → ảnh sẽ cao ~(16/9)*(9/16)*h = h viewport
         * Tức là mỗi section chỉ thấy ~1 viewport height của ảnh.
         * Dùng background-position-y để "kéo" đúng vùng của ảnh lên.
         */
        

        /* Mỗi section bắt đầu ở vùng Y tương ứng của ảnh */
        .section-hero    
        .section-meadow  
        .section-village 
        .section-forest  

        /* Overlay gradient — theo palette ảnh pixel art */
        .parallax-section::after {
            content: '';
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 1;
        }

        /* Section 1 Hero: bầu trời tím hồng → overlay tím nhẹ */
        .section-hero::after {
            background: linear-gradient(
                to bottom,
                rgba(10, 5, 25, 0.75) 0%,
                rgba(10, 5, 25, 0.45) 50%,
                rgba(10, 5, 25, 0.75) 100%
            );
        }

        /* Section 2 Meadow: toà nhà hồng cam → overlay ấm */
        .section-meadow::after {
            background: linear-gradient(
                to bottom,
                rgba(15, 5, 30, 0.75) 0%,
                rgba(15, 5, 30, 0.5) 50%,
                rgba(15, 5, 30, 0.8) 100%
            );
        }

        /* Section 3 Village: đường phố tối → overlay teal */
        .section-village::after {
            background: linear-gradient(
                to bottom,
                rgba(5, 10, 25, 0.75) 0%,
                rgba(5, 10, 25, 0.5) 50%,
                rgba(5, 10, 25, 0.8) 100%
            );
        }

        /* Section 4 Forest: tối/phản chiếu → overlay rất tối */
        .section-forest::after {
            background: linear-gradient(
                to bottom,
                rgba(2, 5, 15, 0.8) 0%,
                rgba(2, 5, 15, 0.6) 50%,
                rgba(2, 5, 15, 0.85) 100%
            );
        }

        .section-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 80px 24px;
        }

        /* ===========================
           FLOATING PARTICLES
        =========================== */
        .particles-layer {
            position: absolute;
            inset: 0;
            z-index: 1;
            pointer-events: none;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            border-radius: 50%;
            animation: floatParticle linear infinite;
            opacity: 0;
        }

        .particle.firefly {
            width: 4px;
            height: 4px;
            background: radial-gradient(circle, #ffe066 0%, #ffaa00 70%, transparent 100%);
            box-shadow: 0 0 8px 4px rgba(255, 220, 80, 0.7);
            animation: fireflyFloat 5s ease-in-out infinite;
        }

        .particle.dust {
            width: 3px;
            height: 3px;
            background: rgba(255, 240, 200, 0.6);
            animation: dustFloat 12s linear infinite;
        }

        .particle.petal {
            width: 6px;
            height: 6px;
            background: rgba(255, 180, 200, 0.8);
            border-radius: 50% 0 50% 0;
            animation: petalFall 10s linear infinite;
        }

        @keyframes fireflyFloat {
            0%, 100% { opacity: 0; transform: translate(0, 0) scale(1); }
            20% { opacity: 0.9; }
            50% { opacity: 1; transform: translate(20px, -30px) scale(1.3); }
            80% { opacity: 0.6; }
        }

        @keyframes dustFloat {
            0% { transform: translateY(100vh) translateX(0); opacity: 0; }
            10% { opacity: 0.7; }
            90% { opacity: 0.4; }
            100% { transform: translateY(-10vh) translateX(80px); opacity: 0; }
        }

        @keyframes petalFall {
            0% { transform: translateY(-5vh) rotate(0deg); opacity: 0; }
            10% { opacity: 0.8; }
            100% { transform: translateY(105vh) rotate(720deg); opacity: 0; }
        }

        /* ===========================
           NAVIGATION
        =========================== */
        #mainHeader {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 100;
            padding: 0 24px;
            transition: all 0.4s ease;
        }

        #mainHeader .nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            border-bottom: 1px solid transparent;
            transition: all 0.4s ease;
        }

        /* === BRICK PATTERN (CSS thuần, không cần ảnh) ===
         * Màu gạch: maroon đậm theo ảnh mẫu (#5a0f22 nền, #3d0818 vữa)
         * Mỗi viên gạch: 60px × 20px, so le hàng chẵn/lẻ
         */
        .brick-bg {
            background-color: #4a0e1c;
            background-image: url('../uploads/nut.png');
            background-size: 186.5px 80px;
            background-repeat: repeat;
            image-rendering: pixelated;
        }

        /* Hiệu ứng lồi chìm gạch (bóng đổ nhẹ) */
        .brick-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: repeating-linear-gradient(
                180deg,
                rgba(0,0,0,0.08) 0px,
                rgba(0,0,0,0) 4px,
                rgba(0,0,0,0) 18px,
                rgba(0,0,0,0.12) 22px
            );
            pointer-events: none;
            z-index: 0;
        }

        #mainHeader.scrolled {
            background-color: #4a0e1c;
            background-image: url('../uploads/nut.png');
            background-size: 186.5px 80px;
            background-repeat: repeat;
            image-rendering: pixelated;
        }

        #mainHeader.scrolled .nav-inner {
            border-bottom-color: rgba(212, 160, 23, 0.2);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .nav-logo img {
            width: 36px;
            height: 36px;
            object-fit: contain;
            filter: drop-shadow(0 0 8px rgba(212, 160, 23, 0.5));
        }

        .nav-logo-text {
            font-family: 'Noto Serif JP', serif;
            font-size: 18px;
            font-weight: 700;
            color: #fff8f0;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.5);
        }

        .nav-logo-text span {
            color: var(--accent-gold);
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 8px;
        }

        nav ul li a {
            color: rgba(255, 248, 240, 0.9);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s;
            position: relative;
        }

        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 4px; left: 50%; right: 50%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: all 0.3s;
        }

        nav ul li a:hover {
            color: var(--accent-gold);
        }

        nav ul li a:hover::after {
            left: 16px;
            right: 16px;
        }

        .nav-buttons {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        /* ===========================
           BUTTONS — chủ đề Gạch Maroon
        =========================== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 4px;          /* Góc vuông giống viên gạch */
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.2s ease;
            border: none;
            white-space: nowrap;
            font-family: 'Nunito', sans-serif;
            position: relative;
            overflow: hidden;
        }

        /* Shimmer sweep khi hover */
        .btn::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(
                105deg,
                transparent 40%,
                rgba(255, 255, 255, 0.15) 50%,
                transparent 60%
            );
            transform: translateX(-100%);
            transition: transform 0.4s ease;
        }

        .btn:hover::after {
            transform: translateX(100%);
        }

        /* Nút chính — gạch maroon nổi */
        .btn-gold {
            color: #f5dde0;
            background-color: #5c0f20;
            background-image: url('../uploads/nut.png');
            background-size: 186.5px 80px;
            background-repeat: repeat;
            image-rendering: pixelated;
            border: 2px solid rgba(20, 2, 8, 0.6);
            border-bottom: 4px solid rgba(10, 0, 4, 0.8);  /* Bong nổi */
            box-shadow:
                0 4px 0 rgba(10, 0, 4, 0.6),
                0 6px 16px rgba(80, 0, 20, 0.4),
                inset 0 1px 0 rgba(255, 180, 180, 0.12);
            text-shadow: 0 1px 2px rgba(0,0,0,0.5);
            letter-spacing: 0.5px;
        }

        .btn-gold:hover {
            transform: translateY(-3px);
            background-color: #6e1228;
            box-shadow:
                0 7px 0 rgba(10, 0, 4, 0.5),
                0 10px 24px rgba(80, 0, 20, 0.55),
                inset 0 1px 0 rgba(255, 180, 180, 0.18);
            color: #fff;
        }

        .btn-gold:active {
            transform: translateY(2px);
            border-bottom-width: 2px;
            box-shadow:
                0 2px 0 rgba(10, 0, 4, 0.6),
                0 3px 8px rgba(80, 0, 20, 0.3);
        }

        /* Nút phụ — trong suốt viền gạch */
        .btn-ghost {
            color: rgba(245, 221, 224, 0.9);
            background: rgba(92, 15, 32, 0.2);
            border: 2px solid rgba(180, 80, 100, 0.5);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            box-shadow: inset 0 0 0 1px rgba(255,200,210,0.08);
        }

        .btn-ghost:hover {
            background: rgba(92, 15, 32, 0.45);
            border-color: rgba(220, 120, 140, 0.8);
            color: #fff;
            transform: translateY(-2px);
            box-shadow:
                0 4px 16px rgba(80, 0, 20, 0.35),
                inset 0 0 0 1px rgba(255,200,210,0.15);
        }

        .btn-ghost:active {
            transform: translateY(1px);
        }

        .btn-large {
            padding: 15px 34px;
            font-size: 16px;
            letter-spacing: 0.8px;
        }

        /* ===========================
           HERO SECTION
        =========================== */
        .section-hero {
            min-height: 100vh;
        }

        .hero-content-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding-top: 100px;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(180, 130, 220, 0.15);
            border: 1px solid rgba(184, 164, 216, 0.4);
            border-radius: 50px;
            color: #d4b8f0;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
        }

        .hero-eyebrow span {
            display: inline-block;
            width: 6px; height: 6px;
            background: #ffd700;
            border-radius: 50%;
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.5); opacity: 0.6; }
        }

        .hero-title {
            font-family: 'Noto Serif JP', serif;
            font-size: clamp(40px, 7vw, 80px);
            font-weight: 700;
            color: #fff8f0;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 24px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.6), 0 0 80px rgba(212, 160, 23, 0.2);
        }

        .hero-title .highlight {
            color: var(--accent-gold);
            position: relative;
            display: inline-block;
        }

        .hero-title .highlight::after {
            content: '';
            position: absolute;
            bottom: -4px; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
            border-radius: 2px;
            animation: shimmer 3s ease-in-out infinite;
        }

        @keyframes shimmer {
            0%, 100% { opacity: 0.5; }
            50% { opacity: 1; }
        }

        .hero-desc {
            max-width: 620px;
            font-size: 18px;
            line-height: 1.75;
            color: rgba(255, 248, 240, 0.95);
            margin-bottom: 44px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.95), 0 1px 4px rgba(0, 0, 0, 0.9);
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* Scroll indicator */
        .scroll-indicator {
            position: absolute;
            bottom: 36px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 5;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: rgba(255, 248, 240, 0.7);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            animation: bobUp 2s ease-in-out infinite;
        }

        @keyframes bobUp {
            0%, 100% { transform: translateX(-50%) translateY(0); }
            50% { transform: translateX(-50%) translateY(10px); }
        }

        .scroll-indicator svg {
            width: 24px;
            height: 24px;
            animation: arrowBob 1.5s ease-in-out infinite;
        }

        @keyframes arrowBob {
            0%, 100% { transform: translateY(0); opacity: 0.6; }
            50% { transform: translateY(6px); opacity: 1; }
        }

        /* Stats bar */
        .hero-stats {
            display: flex;
            gap: 0;
            margin-top: 60px;
            background: rgba(255, 248, 240, 0.1);
            border: 1px solid rgba(255, 248, 240, 0.15);
            border-radius: 20px;
            backdrop-filter: blur(12px);
            overflow: hidden;
        }

        .hero-stat {
            flex: 1;
            padding: 20px 32px;
            text-align: center;
            border-right: 1px solid rgba(255, 248, 240, 0.15);
        }

        .hero-stat:last-child { border-right: none; }

        .hero-stat-val {
            font-family: 'Noto Serif JP', serif;
            font-size: 28px;
            font-weight: 700;
            color: var(--accent-gold);
            display: block;
        }

        .hero-stat-lbl {
            font-size: 12px;
            color: rgba(255, 248, 240, 0.7);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-top: 4px;
        }

        /* ===========================
           SECTION DIVIDER
        =========================== */
        .scene-divider {
            position: relative;
            height: 80px;
            overflow: hidden;
            z-index: 3;
        }

        .scene-divider svg {
            position: absolute;
            bottom: 0; left: 0;
            width: 100%;
            height: 100%;
        }

        /* ===========================
           MEADOW / FEATURES SECTION
        =========================== */
        .section-header-ghibli {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-tag {
            display: inline-block;
            padding: 5px 16px;
            background: rgba(90, 143, 60, 0.25);
            border: 1px solid rgba(90, 143, 60, 0.5);
            border-radius: 50px;
            color: #a8d88f;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-tag.gold {
            background: rgba(212, 160, 23, 0.2);
            border-color: rgba(212, 160, 23, 0.4);
            color: var(--accent-gold);
        }

        .section-tag.blue {
            background: rgba(60, 100, 200, 0.2);
            border-color: rgba(80, 140, 255, 0.4);
            color: #7ab8ff;
        }

        .section-title-ghibli {
            font-family: 'Noto Serif JP', serif;
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 700;
            color: #fff8f0;
            line-height: 1.3;
            text-shadow: 0 3px 15px rgba(0,0,0,0.5);
            margin-bottom: 14px;
        }

        .section-sub-ghibli {
            font-size: 16px;
            color: rgba(255, 248, 240, 0.9);
            max-width: 540px;
            margin: 0 auto;
            line-height: 1.7;
            text-shadow: 0 1px 8px rgba(0,0,0,0.5);
        }

        /* Feature Cards */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .feature-card {
            background: rgba(13, 10, 24, 0.65);
            border: 1px solid rgba(255, 248, 200, 0.15);
            border-radius: 20px;
            padding: 28px 24px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            cursor: default;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: -50%; left: -50%;
            width: 200%; height: 200%;
            background: radial-gradient(circle, rgba(212, 160, 23, 0.05) 0%, transparent 70%);
            opacity: 0;
            transition: opacity 0.4s;
        }

        .feature-card:hover {
            transform: translateY(-8px) scale(1.01);
            border-color: rgba(212, 160, 23, 0.45);
            background: rgba(13, 10, 24, 0.8);
            box-shadow: 0 20px 50px rgba(0,0,0,0.3), 0 0 30px rgba(212, 160, 23, 0.1);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            background: rgba(212, 160, 23, 0.15);
            border: 1px solid rgba(212, 160, 23, 0.3);
        }

        .feature-icon svg {
            width: 26px;
            height: 26px;
            color: var(--accent-gold);
            stroke: currentColor;
        }

        .feature-icon.green {
            background: rgba(90, 143, 60, 0.2);
            border-color: rgba(90, 143, 60, 0.4);
        }

        .feature-icon.green svg { color: #7dd35f; }

        .feature-icon.blue {
            background: rgba(60, 120, 200, 0.2);
            border-color: rgba(80, 150, 255, 0.4);
        }

        .feature-icon.blue svg { color: #7ab8ff; }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 800;
            color: #fff8f0;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: rgba(255, 248, 240, 0.7);
            line-height: 1.65;
        }

        /* ===========================
           VILLAGE / STEPS SECTION
        =========================== */
        .showcase-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .step-item {
            display: flex;
            gap: 20px;
            position: relative;
            padding-bottom: 36px;
        }

        .step-item:last-child { padding-bottom: 0; }

        .step-item:not(:last-child)::before {
            content: '';
            position: absolute;
            left: 22px;
            top: 46px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, rgba(212, 160, 23, 0.5), rgba(212, 160, 23, 0.1));
        }

        .step-num {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f5c842, #d4a017);
            color: #1a0a02;
            font-size: 18px;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(212, 160, 23, 0.4);
            position: relative;
            z-index: 1;
        }

        .step-body h4 {
            font-size: 18px;
            font-weight: 800;
            color: #fff8f0;
            margin-bottom: 8px;
        }

        .step-body p {
            font-size: 14px;
            color: rgba(255, 248, 240, 0.85);
            line-height: 1.65;
            text-shadow: 0 1px 4px rgba(0,0,0,0.4);
        }

        /* Stats Cards for Showcase */
        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .stat-card {
            background: rgba(13, 10, 24, 0.65);
            border: 1px solid rgba(255, 248, 200, 0.15);
            border-radius: 20px;
            padding: 28px 20px;
            text-align: center;
            backdrop-filter: blur(12px);
            transition: all 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: rgba(212, 160, 23, 0.4);
            box-shadow: 0 15px 40px rgba(0,0,0,0.3);
        }

        .stat-card.wide {
            grid-column: span 2;
        }

        .stat-card-val {
            font-family: 'Noto Serif JP', serif;
            font-size: 36px;
            font-weight: 700;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 6px;
        }

        .stat-card-val.green { color: #5dde30; }

        .stat-card-lbl {
            font-size: 13px;
            color: rgba(255, 248, 240, 0.65);
            line-height: 1.5;
        }

        /* ===========================
           FOREST / CTA SECTION
        =========================== */
        .cta-box {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-title {
            font-family: 'Noto Serif JP', serif;
            font-size: clamp(28px, 4vw, 52px);
            font-weight: 700;
            color: #fff8f0;
            line-height: 1.25;
            margin-bottom: 20px;
            text-shadow: 0 4px 20px rgba(0,0,0,0.5);
        }

        .cta-title .accent { color: #7dd35f; }

        .cta-desc {
            font-size: 17px;
            color: rgba(255, 248, 240, 0.8);
            line-height: 1.7;
            margin-bottom: 40px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Nút CTA section — cùng gạch nhưng tone đậm hơn */
        .btn-forest {
            color: #f5dde0;
            background-color: #6b1227;
            background-image: url('../uploads/nut.png');
            background-size: 186.5px 80px;
            background-repeat: repeat;
            image-rendering: pixelated;
            border: 2px solid rgba(15, 2, 6, 0.6);
            border-bottom: 4px solid rgba(8, 0, 3, 0.8);
            box-shadow:
                0 4px 0 rgba(8, 0, 3, 0.7),
                0 6px 20px rgba(100, 10, 30, 0.5),
                inset 0 1px 0 rgba(255, 180, 180, 0.12);
            text-shadow: 0 1px 2px rgba(0,0,0,0.5);
            letter-spacing: 0.5px;
        }

        .btn-forest:hover {
            transform: translateY(-3px);
            background-color: #7d1530;
            box-shadow:
                0 7px 0 rgba(8, 0, 3, 0.6),
                0 10px 28px rgba(100, 10, 30, 0.65),
                inset 0 1px 0 rgba(255, 180, 180, 0.18);
            color: #fff;
        }

        .btn-forest:active {
            transform: translateY(2px);
            border-bottom-width: 2px;
            box-shadow: 0 2px 0 rgba(8, 0, 3, 0.7), 0 3px 10px rgba(100, 10, 30, 0.3);
        }

        /* ===========================
           FOOTER
        =========================== */
        footer {
            background-color: #4a0e1c;
            background-image: url('../uploads/nut.png');
            background-size: 186.5px 80px;
            background-repeat: repeat;
            image-rendering: pixelated;
            border-top: 3px solid rgba(20, 2, 8, 0.9);
            position: relative;
            padding: 60px 24px 30px;
        }

        /* Lới phủ tạo độ sâu cho gạch footer */
        footer::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                repeating-linear-gradient(
                    180deg,
                    rgba(255,255,255,0.015) 0px,
                    rgba(255,255,255,0.015) 2px,
                    transparent 2px,
                    transparent 18px,
                    rgba(0,0,0,0.12) 18px,
                    rgba(0,0,0,0.12) 22px
                );
            background-size: 62px 22px;
            pointer-events: none;
            z-index: 0;
        }

        footer > * {
            position: relative;
            z-index: 1;
        }

        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            margin-bottom: 16px;
        }

        .footer-brand-logo img {
            width: 32px;
            height: 32px;
            object-fit: contain;
        }

        .footer-brand-logo span {
            font-family: 'Noto Serif JP', serif;
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-gold);
        }

        .footer-desc {
            font-size: 13px;
            color: rgba(255, 248, 240, 0.5);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-contacts a,
        .footer-contacts span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 248, 240, 0.6);
            margin-bottom: 10px;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-contacts svg {
            width: 14px; height: 14px;
            flex-shrink: 0;
            stroke: rgba(212, 160, 23, 0.7);
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 13px;
            color: rgba(255, 248, 240, 0.55);
            text-decoration: none;
            transition: all 0.2s;
        }

        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 6px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 248, 240, 0.07);
        }

        .footer-copyright {
            font-size: 13px;
            color: rgba(255, 248, 240, 0.4);
        }

        .footer-socials {
            display: flex;
            gap: 12px;
        }

        .footer-social-btn {
            width: 34px; height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            display: flex; align-items: center; justify-content: center;
            color: rgba(255, 248, 240, 0.6);
            text-decoration: none;
            transition: all 0.3s;
        }

        .footer-social-btn:hover {
            background: rgba(212, 160, 23, 0.2);
            border-color: rgba(212, 160, 23, 0.5);
            color: var(--accent-gold);
            transform: translateY(-2px);
        }

        .footer-social-btn svg {
            width: 15px; height: 15px;
            fill: currentColor;
        }

        /* ===========================
           MODALS
        =========================== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(5, 8, 3, 0.85);
            backdrop-filter: blur(8px);
            z-index: 200;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 24px;
        }

        .modal-overlay.active { display: flex; }

        .modal-card {
            background: rgba(20, 15, 5, 0.97);
            border: 1px solid rgba(212, 160, 23, 0.3);
            border-radius: 24px;
            width: 100%;
            max-width: 520px;
            max-height: 85vh;
            overflow-y: auto;
            box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(212, 160, 23, 0.1);
            animation: modalIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .modal-card.wide { max-width: 660px; }

        @keyframes modalIn {
            from { transform: scale(0.9) translateY(20px); opacity: 0; }
            to { transform: scale(1) translateY(0); opacity: 1; }
        }

        .modal-header {
            padding: 24px 28px 20px;
            border-bottom: 1px solid rgba(212, 160, 23, 0.15);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .modal-title {
            font-family: 'Noto Serif JP', serif;
            font-size: 18px;
            font-weight: 700;
            color: #fff8f0;
        }

        .modal-close {
            width: 32px; height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 248, 240, 0.7);
            font-size: 18px;
            cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            transition: all 0.2s;
        }

        .modal-close:hover {
            background: rgba(255, 80, 80, 0.15);
            border-color: rgba(255, 80, 80, 0.3);
            color: #ff6b6b;
        }

        .modal-body {
            padding: 24px 28px;
        }

        .modal-body p {
            font-size: 14px;
            color: rgba(255, 248, 240, 0.7);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .modal-body h4 {
            font-size: 15px;
            font-weight: 800;
            color: var(--accent-gold);
            margin: 20px 0 8px;
        }

        .modal-footer {
            padding: 16px 28px 24px;
            display: flex;
            gap: 10px;
            justify-content: flex-end;
            border-top: 1px solid rgba(212, 160, 23, 0.1);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: rgba(255, 248, 240, 0.8);
            margin-bottom: 8px;
        }

        .form-textarea {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(212, 160, 23, 0.25);
            border-radius: 12px;
            color: #fff8f0;
            font-size: 14px;
            font-family: 'Nunito', sans-serif;
            resize: vertical;
            min-height: 120px;
            transition: border-color 0.2s;
        }

        .form-textarea:focus {
            outline: none;
            border-color: rgba(212, 160, 23, 0.6);
            box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.1);
        }

        .form-error {
            font-size: 12px;
            color: #ff7070;
            margin-top: 6px;
            display: block;
        }

        /* Toast */
        .toast-bar {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 300;
            background: rgba(15, 40, 10, 0.95);
            border: 1px solid rgba(90, 143, 60, 0.6);
            border-radius: 14px;
            padding: 14px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.5);
            transform: translateX(120%);
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            backdrop-filter: blur(12px);
        }

        .toast-bar.show { transform: translateX(0); }

        .toast-icon {
            color: #5dde30;
            flex-shrink: 0;
        }

        .toast-icon svg { width: 22px; height: 22px; stroke: currentColor; }

        .toast-msg {
            font-size: 14px;
            font-weight: 700;
            color: #d4f5be;
        }

        /* ===========================
           RESPONSIVE
        =========================== */
        @media (max-width: 900px) {
            .showcase-layout { grid-template-columns: 1fr; gap: 40px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero-stats { flex-direction: column; }
            .hero-stat { border-right: none; border-bottom: 1px solid rgba(255, 248, 240, 0.15); }
            .hero-stat:last-child { border-bottom: none; }
        }

        @media (max-width: 640px) {
            nav ul { display: none; }
            .footer-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .stat-card.wide { grid-column: auto; }
        }