/**
 * 前台樣式
 * 從原始 HTML 提取
 */

/* ===== CSS Variables ===== */
        :root {
            --primary-color: #c9b489;
            --primary-dark: #a89460;
            --primary-light: #e0d4b8;
            --white: #ffffff;
            --black: #333333;
            --gray: #666666;
            --light-gray: #f8f8f8;
            --shadow: 0 10px 40px rgba(0,0,0,0.1);
            --shadow-hover: 0 20px 60px rgba(0,0,0,0.15);
            --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base Styles ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans TC', sans-serif;
            line-height: 1.8;
            color: var(--black);
            background: var(--white);
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Preloader ===== */
        .preloader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--white);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            transition: opacity 0.5s, visibility 0.5s;
        }

        .preloader.hide {
            opacity: 0;
            visibility: hidden;
        }

        .loader {
            width: 60px;
            height: 60px;
            border: 4px solid var(--primary-light);
            border-top-color: var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        /* ===== Header & Navigation ===== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            transition: var(--transition);
            border-bottom: 1px solid transparent;
        }

        header.scrolled {
            box-shadow: 0 2px 30px rgba(0,0,0,0.1);
            border-bottom: 1px solid rgba(201,180,137,0.2);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 40px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.5rem;
            font-weight: 700;
            box-shadow: 0 4px 15px rgba(201,180,137,0.4);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
        }

        .logo-text .eng {
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--gray);
            letter-spacing: 1px;
        }

        .logo-text .chi {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 2px;
        }

        .nav-menu {
            display: flex;
            gap: 8px;
        }

        .nav-menu li a {
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--black);
            border-radius: 8px;
            position: relative;
            overflow: hidden;
        }

        .nav-menu li a::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: var(--transition);
            transform: translateX(-50%);
        }

        .nav-menu li a:hover::before,
        .nav-menu li a.active::before {
            width: 60%;
        }

        .nav-menu li a:hover {
            color: var(--primary-dark);
            background: rgba(201,180,137,0.1);
        }

        /* Dropdown Menu */
        .dropdown {
            position: relative;
        }

        .dropdown-content {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 220px;
            background: #1a252f;
            border-radius: 12px;
            box-shadow: var(--shadow);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: var(--transition);
            padding: 10px 0;
            border: 1px solid rgba(201,180,137,0.2);
        }

        .dropdown:hover .dropdown-content {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-content a {
            display: block;
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #ffffff;
        }

        .dropdown-content a:hover {
            background: #2a3a4a;
            color: var(--primary-color, #c9b489);
        }

        /* Hamburger Menu */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            padding: 10px;
            border-radius: 8px;
            background: transparent;
            border: none;
            transition: var(--transition);
        }

        .hamburger:hover {
            background: rgba(201,180,137,0.1);
        }

        .hamburger span {
            width: 28px;
            height: 3px;
            background: var(--primary-color);
            border-radius: 3px;
            transition: var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(6px, 6px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: translateX(-10px);
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        /* Mobile Menu */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 85%;
            max-width: 400px;
            height: 100vh;
            background: var(--white);
            z-index: 999;
            transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            box-shadow: -10px 0 40px rgba(0,0,0,0.1);
        }

        .mobile-menu.active {
            right: 0;
        }

        .mobile-menu-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 25px;
            border-bottom: 1px solid rgba(201,180,137,0.2);
            background: linear-gradient(135deg, rgba(201,180,137,0.1), transparent);
        }

        .mobile-menu-close {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--light-gray);
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--gray);
            transition: var(--transition);
        }

        .mobile-menu-close:hover {
            background: var(--primary-color);
            color: var(--white);
            transform: rotate(90deg);
        }

        .mobile-nav {
            padding: 20px 0;
        }

        .mobile-nav li {
            border-bottom: 1px solid rgba(201,180,137,0.1);
        }

        .mobile-nav li a {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 18px 25px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--black);
            transition: var(--transition);
        }

        .mobile-nav li a i {
            width: 20px;
            color: var(--primary-color);
        }

        .mobile-nav li a:hover {
            background: linear-gradient(90deg, rgba(201,180,137,0.15), transparent);
            padding-left: 35px;
            color: var(--primary-dark);
        }

        .mobile-menu-footer {
            padding: 25px;
            background: var(--light-gray);
            margin-top: 20px;
        }

        .mobile-menu-footer .contact-info {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mobile-menu-footer .contact-info a {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--gray);
            font-size: 0.9rem;
        }

        .mobile-menu-footer .contact-info a i {
            color: var(--primary-color);
        }

        .menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 998;
            backdrop-filter: blur(5px);
        }

        .menu-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* ===== Hero Slider ===== */
        .hero-section {
            position: relative;
            height: 100vh;
            min-height: 600px;
            overflow: hidden;
        }

        .slider {
            position: relative;
            width: 100%;
            height: 100%;
        }

        .slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1s ease-in-out;
        }

        .slide.active {
            opacity: 1;
        }

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

        .slide-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(
                to bottom,
                rgba(0,0,0,0.3) 0%,
                rgba(0,0,0,0.1) 50%,
                rgba(0,0,0,0.5) 100%
            );
        }

        .hero-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: var(--white);
            z-index: 10;
            width: 90%;
            max-width: 900px;
        }

        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            text-shadow: 2px 2px 20px rgba(0,0,0,0.3);
            animation: fadeInUp 1s ease;
        }

        .hero-content .subtitle {
            font-size: 1.3rem;
            font-weight: 300;
            margin-bottom: 30px;
            text-shadow: 1px 1px 10px rgba(0,0,0,0.3);
            letter-spacing: 3px;
            animation: fadeInUp 1s ease 0.2s backwards;
        }

        .hero-content p {
            font-size: 1.1rem;
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            opacity: 0.95;
            animation: fadeInUp 1s ease 0.4s backwards;
        }

        .hero-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 1s ease 0.6s backwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .btn {
            padding: 15px 40px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary {
            background: var(--primary-color);
            color: var(--white);
            box-shadow: 0 10px 30px rgba(201,180,137,0.4);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(201,180,137,0.5);
        }

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

        .btn-outline:hover {
            background: var(--white);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        /* Slider Navigation */
        .slider-nav {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 12px;
            z-index: 10;
        }

        .slider-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255,255,255,0.5);
            cursor: pointer;
            transition: var(--transition);
        }

        .slider-dot.active {
            background: var(--primary-color);
            transform: scale(1.3);
        }

        .slider-arrows {
            position: absolute;
            top: 50%;
            width: 100%;
            display: flex;
            justify-content: space-between;
            padding: 0 30px;
            transform: translateY(-50%);
            z-index: 10;
            pointer-events: none;
        }

        .slider-arrow {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.3);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.2rem;
            pointer-events: auto;
        }

        .slider-arrow:hover {
            background: var(--primary-color);
            transform: scale(1.1);
        }

        .scroll-indicator {
            position: absolute;
            bottom: 100px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 10;
            animation: bounce 2s infinite;
        }

        .scroll-indicator i {
            color: var(--white);
            font-size: 2rem;
            opacity: 0.8;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
            40% { transform: translateX(-50%) translateY(-15px); }
            60% { transform: translateX(-50%) translateY(-7px); }
        }

        /* ===== Features Section ===== */
        .features-section {
            padding: 100px 0;
            background: var(--white);
            position: relative;
        }

        .features-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c9b489' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.5;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
            z-index: 1;
        }

        .section-tag {
            display: inline-block;
            padding: 8px 20px;
            background: rgba(201,180,137,0.15);
            color: var(--primary-dark);
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 15px;
            letter-spacing: 2px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--black);
            margin-bottom: 15px;
        }

        .section-header p {
            color: var(--gray);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.1rem;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
        }

        .feature-card {
            background: var(--white);
            padding: 40px 30px;
            border-radius: 20px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(201,180,137,0.1);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
            transform: scaleX(0);
            transition: var(--transition);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.1) rotate(5deg);
        }

        .feature-icon i {
            font-size: 2rem;
            color: var(--white);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--black);
        }

        .feature-card p {
            color: var(--gray);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== About Section ===== */
        .about-section {
            padding: 100px 0;
            background: var(--light-gray);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
        }

        .about-image {
            position: relative;
        }

        .about-image img {
            border-radius: 20px;
            box-shadow: var(--shadow);
        }

        .about-image::before {
            content: '';
            position: absolute;
            top: -20px;
            left: -20px;
            width: 100%;
            height: 100%;
            border: 3px solid var(--primary-color);
            border-radius: 20px;
            z-index: -1;
        }

        .experience-badge {
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 150px;
            height: 150px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--white);
            box-shadow: 0 10px 40px rgba(201,180,137,0.4);
        }

        .experience-badge .number {
            font-size: 3rem;
            font-weight: 700;
            line-height: 1;
        }

        .experience-badge .text {
            font-size: 0.9rem;
            font-weight: 500;
        }

        .about-content h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--black);
        }

        .about-content h2 span {
            color: var(--primary-color);
        }

        .about-content p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 30px 0;
        }

        .about-feature {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .about-feature i {
            width: 50px;
            height: 50px;
            background: rgba(201,180,137,0.15);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.2rem;
        }

        .about-feature span {
            font-weight: 500;
            color: var(--black);
        }

        /* ===== Services Section ===== */
        .services-section {
            padding: 100px 0;
            background: var(--white);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(201,180,137,0.1);
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }

        .service-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .service-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .service-card:hover .service-image img {
            transform: scale(1.1);
        }

        .service-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.5));
        }

        .service-content {
            padding: 30px;
        }

        .service-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--black);
        }

        .service-content p {
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-color);
            font-weight: 600;
            font-size: 0.95rem;
        }

        .service-link:hover {
            color: var(--primary-dark);
            gap: 12px;
        }

        /* ===== Stats Section ===== */
        .stats-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
        }

        .stats-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            color: var(--white);
        }

        .stat-number {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1;
        }

        .stat-label {
            font-size: 1rem;
            opacity: 0.9;
            font-weight: 500;
        }

        /* ===== Testimonials Section ===== */
        .testimonials-section {
            padding: 100px 0;
            background: var(--light-gray);
        }

        .testimonial-slider {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }

        .testimonial-card {
            background: var(--white);
            padding: 50px;
            border-radius: 20px;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
        }

        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 20px;
            left: 40px;
            font-size: 8rem;
            color: rgba(201,180,137,0.2);
            font-family: Georgia, serif;
            line-height: 1;
        }

        .testimonial-text {
            font-size: 1.2rem;
            color: var(--gray);
            font-style: italic;
            margin-bottom: 30px;
            position: relative;
            z-index: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
        }

        .testimonial-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.5rem;
            font-weight: 700;
        }

        .testimonial-info h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--black);
        }

        .testimonial-info span {
            color: var(--gray);
            font-size: 0.9rem;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 100px 0;
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), 
                        url('https://brightiec.easy-eshop.com/product_images/uploaded_images/banner002.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            text-align: center;
            color: var(--white);
        }

        .cta-section h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: 40px;
            opacity: 0.9;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Contact Section ===== */
        .contact-section {
            padding: 100px 0;
            background: var(--white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .contact-info-card {
            background: var(--light-gray);
            padding: 40px;
            border-radius: 20px;
        }

        .contact-info-card h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 30px;
            color: var(--black);
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            margin-bottom: 25px;
        }

        .contact-item-icon {
            width: 55px;
            height: 55px;
            background: var(--primary-color);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .contact-item-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 5px;
            color: var(--black);
        }

        .contact-item-content p,
        .contact-item-content a {
            color: var(--gray);
            font-size: 0.95rem;
        }

        .contact-item-content a:hover {
            color: var(--primary-color);
        }

        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 30px;
        }

        .social-links a {
            width: 50px;
            height: 50px;
            background: var(--white);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.2rem;
            transition: var(--transition);
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }

        .social-links a:hover {
            background: var(--primary-color);
            color: var(--white);
            transform: translateY(-5px);
        }

        .contact-form {
            background: var(--white);
        }

        .contact-form h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 30px;
            color: var(--black);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-weight: 500;
            margin-bottom: 8px;
            color: var(--black);
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 15px 20px;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
            background: var(--white);
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 4px rgba(201,180,137,0.1);
        }

        .form-group textarea {
            height: 150px;
            resize: vertical;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        /* ===== Footer ===== */
        footer {
            background: #1a1a1a;
            color: var(--white);
            padding: 80px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-about h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--primary-color);
        }

        .footer-about p {
            color: #aaa;
            margin-bottom: 25px;
            line-height: 1.8;
        }

        .footer-column h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 25px;
            color: var(--white);
            position: relative;
            padding-bottom: 10px;
        }

        .footer-column h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--primary-color);
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #aaa;
            font-size: 0.95rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a::before {
            content: '→';
            opacity: 0;
            transform: translateX(-10px);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }

        .footer-links a:hover::before {
            opacity: 1;
            transform: translateX(0);
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-bottom p {
            color: #888;
            font-size: 0.9rem;
        }

        .footer-bottom-links {
            display: flex;
            gap: 30px;
        }

        .footer-bottom-links a {
            color: #888;
            font-size: 0.9rem;
        }

        .footer-bottom-links a:hover {
            color: var(--primary-color);
        }

        /* ===== WhatsApp Button ===== */
        .whatsapp-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 65px;
            height: 65px;
            background: #25D366;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 2rem;
            box-shadow: 0 8px 30px rgba(37,211,102,0.4);
            z-index: 999;
            transition: var(--transition);
            animation: pulse 2s infinite;
        }

        .whatsapp-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 12px 40px rgba(37,211,102,0.5);
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(37,211,102,0.4); }
            70% { box-shadow: 0 0 0 20px rgba(37,211,102,0); }
            100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
        }

        .whatsapp-tooltip {
            position: absolute;
            right: 80px;
            background: var(--white);
            color: var(--black);
            padding: 10px 20px;
            border-radius: 10px;
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            box-shadow: 0 5px 20px rgba(0,0,0,0.15);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .whatsapp-btn:hover .whatsapp-tooltip {
            opacity: 1;
            visibility: visible;
        }

        /* ===== Back to Top Button ===== */
        .back-to-top {
            position: fixed;
            bottom: 110px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.2rem;
            box-shadow: 0 5px 20px rgba(201,180,137,0.4);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            cursor: pointer;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-5px);
        }

        /* ===== Responsive Styles ===== */
        @media (max-width: 1200px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media (max-width: 992px) {
            .nav-menu {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .hero-content h1 {
                font-size: 2.5rem;
            }

            .about-grid,
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 50px;
            }

            .about-image {
                order: -1;
            }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-container {
                padding: 12px 20px;
            }

            .hero-content h1 {
                font-size: 2rem;
            }

            .hero-content .subtitle {
                font-size: 1rem;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }

            .slider-arrows {
                display: none;
            }

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

            .about-features {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 2rem;
            }

            .experience-badge {
                width: 120px;
                height: 120px;
                right: 10px;
                bottom: -20px;
            }

            .experience-badge .number {
                font-size: 2.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .whatsapp-btn {
                width: 55px;
                height: 55px;
                font-size: 1.6rem;
                bottom: 20px;
                right: 20px;
            }

            .back-to-top {
                width: 45px;
                height: 45px;
                bottom: 90px;
                right: 20px;
            }
        }

        @media (max-width: 480px) {
            .logo-text .eng {
                font-size: 0.65rem;
            }

            .logo-text .chi {
                font-size: 1rem;
            }

            .hero-content h1 {
                font-size: 1.8rem;
            }

            .stat-number {
                font-size: 2.5rem;
            }

            .testimonial-card {
                padding: 30px 20px;
            }

            .contact-info-card {
                padding: 30px 20px;
            }
        }