/* ---------- 全局變量與重置 ---------- */
        :root {
            --primary-dark: #000000;
            --primary-light: #ffffff;
            --gray-bg: #f8f9fa;
            --accent: #ffc824;
            --text-dark: #212529;
            --transition-base: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
            --bg-soft: #f9f9f9;
			
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', 'PingFang TC', 'Microsoft YaHei', Roboto, sans-serif;
            background-color: #ffffff;
            color: #1e1e1e;
            overflow-x: hidden;
        }
        /* 緩動初始隱藏效果 (滾動顯示) */
        .scroll-fade {
            opacity: 0;
            transform: translateY(45px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .scroll-fade.show {
            opacity: 1;
            transform: translateY(0);
        }
        /* 各屏通用間距 */
        .section-padding {
            padding: 40px 0;
        }
		
		 /* footer */
        .footer {
            background-color: #0a0a0a;
            color: #ccc;
            padding: 50px 0 30px;
        }
        .footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer a:hover {
            color: var(--accent);
        }
        .footer-logo img {
            max-height: 45px;
            margin-bottom: 20px;
        }
        .social-icons i {
            font-size: 1.4rem;
            margin-right: 15px;
        }
        .footer-title {
            font-weight: 700;
            margin-bottom: 1.2rem;
            color: white;
        }
		
		
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
        }
        /* 背景層次美化 */
        .bg-soft-layer {
            background-color: var(--bg-soft);
        }
        /* 標題風格 */
        .section-title {
            font-size: 2.8rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
            color: #111;
        }
        .section-sub {
            font-size: 1.1rem;
            color: #6c757d;
            max-width: 700px;
            margin: 0 auto;
        }
        .accent-color {
            color: var(--accent);
        }
        .list-unstyled li{line-height:2rem}
        /* ---------- 第一屏：導航菜單 (左中右 自適應) ---------- */
        .navbar-custom {
            background-color: white;
            padding: 0.8rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
            position: relative;
            z-index: 1030;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .logo-area img {
            max-height: 50px;
            width: auto;
        }
        .nav-menu {
            display: flex;
            gap: 1.8rem;
            list-style: none;
            margin: 0;
            padding: 0;
            transition: all 0.3s;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            text-decoration: none;
            font-weight: 600;
            color: #1e1e1e;
            font-size: 1rem;
            transition: color 0.2s;
            padding: 0.5rem 0;
            display: inline-block;
            white-space: nowrap;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent);
        }
        /* 子菜單 */
        .submenu {
            position: absolute;
            top: 100%;
            left: 0;
            background: white;
            min-width: 180px;
            box-shadow: 0 12px 25px rgba(0,0,0,0.08);
            border-radius: 12px;
            padding: 0.8rem 0;
            list-style: none;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.2s ease;
            z-index: 100;
            border: 1px solid #eee;
        }
        .nav-item:hover .submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0px);
        }
        .submenu li a {
            display: block;
            padding: 0.5rem 1.5rem;
            text-decoration: none;
            color: #2c3e50;
            font-size: 0.9rem;
            transition: background 0.2s;
        }
        .submenu li a:hover {
            background-color: #fff2db;
            color: var(--accent);
        }
        /* 移動端 */
        .mobile-menu-btn {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #111;
            cursor: pointer;
        }
        .right-icon a {
            text-decoration: none;
            color: #1e1e1e;
            font-weight: 500;
            letter-spacing: 1px;
            transition: color 0.2s;
        }
        .right-icon a:hover {
            color: var(--accent);
        }
        @media (max-width: 992px) {
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 80%;
                height: calc(100% - 70px);
                background: white;
                flex-direction: column;
                padding: 2rem 1.5rem;
                gap: 1rem;
                box-shadow: 2px 0 20px rgba(0,0,0,0.1);
                transition: left 0.3s;
                z-index: 1050;
                overflow-y: auto;
            }
            .nav-menu.active {
                left: 0;
            }
            .nav-item .submenu {
                position: static;
                box-shadow: none;
                opacity: 1;
                visibility: visible;
                transform: none;
                display: none;
                padding-left: 1rem;
                background: #f9f9f9;
                margin-top: 0.5rem;
                border-radius: 12px;
            }
            .nav-item.open-sub .submenu {
                display: block;
            }
            .mobile-menu-btn {
                display: block;
            }
            .nav-link {
                font-size: 1.1rem;
            }
            .navbar-custom {
                padding: 0.8rem 1.2rem;
            }
        }