:root {
            --primary-blue: #0d47a1;
            --secondary-blue: #1565c0;
            --accent-gold: #ffb300;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
            --shadow-light: rgba(0, 0, 0, 0.08);
            --shadow-medium: rgba(0, 0, 0, 0.12);
        }
        body {
            font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
            color: var(--dark-text);
            overflow-x: hidden;
            line-height: 1.7;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-blue) !important;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s;
            padding: 0.5rem 1.2rem !important;
        }
        .nav-link:hover {
            color: var(--accent-gold) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
            color: white;
            padding: 8rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .hero-section p {
            font-size: 1.3rem;
            margin-bottom: 2.5rem;
            opacity: 0.95;
        }
        .btn-primary-custom {
            background-color: var(--accent-gold);
            border: none;
            color: #000;
            font-weight: 600;
            padding: 0.9rem 2.5rem;
            border-radius: 50px;
            transition: all 0.3s ease;
            box-shadow: 0 6px 15px rgba(255, 179, 0, 0.4);
        }
        .btn-primary-custom:hover {
            background-color: #ffa000;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 179, 0, 0.5);
        }
        .section-title {
            text-align: center;
            margin-bottom: 4rem;
            position: relative;
            padding-bottom: 1.2rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .service-card, .news-card, .team-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px var(--shadow-light);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            height: 100%;
            background: white;
        }
        .service-card:hover, .news-card:hover, .team-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 18px 40px var(--shadow-medium);
        }
        .service-icon {
            font-size: 3.5rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }
        .news-date {
            color: #6c757d;
            font-size: 0.9rem;
            margin-bottom: 0.8rem;
        }
        .team-card img {
            height: 220px;
            object-fit: cover;
            object-position: top;
        }
        .contact-info-box {
            background: var(--light-bg);
            border-radius: 12px;
            padding: 2.5rem;
            text-align: center;
            height: 100%;
            transition: all 0.3s;
            border-left: 5px solid var(--primary-blue);
        }
        .contact-info-box:hover {
            background: white;
            box-shadow: 0 12px 25px var(--shadow-light);
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }
        footer {
            background: #1a237e;
            color: #e8eaf6;
            padding-top: 4rem;
        }
        .footer-link {
            color: #c5cae9;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-link:hover {
            color: var(--accent-gold);
        }
        .flink {
            display: inline-block;
            background: #283593;
            color: #c5cae9;
            padding: 0.6rem 1.5rem;
            border-radius: 30px;
            margin: 0.4rem 0.6rem;
            text-decoration: none;
            transition: all 0.3s;
            font-size: 0.95rem;
        }
        .flink:hover {
            background: var(--accent-gold);
            color: #000;
            transform: scale(1.05);
        }
        .stock-ticker {
            background: #0d47a1;
            color: white;
            padding: 0.8rem 0;
            overflow: hidden;
            white-space: nowrap;
            font-weight: 600;
            border-bottom: 2px solid var(--accent-gold);
        }
        .ticker-content {
            display: inline-block;
            animation: ticker 40s linear infinite;
        }
        @keyframes ticker {
            0% { transform: translateX(100%); }
            100% { transform: translateX(-100%); }
        }
        .chart-container {
            background: white;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 8px 20px var(--shadow-light);
            height: 100%;
        }
        .accordion-button {
            font-weight: 600;
            background-color: rgba(13, 71, 161, 0.05);
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary-blue);
            background-color: rgba(13, 71, 161, 0.1);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-blue);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 1.5rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--accent-gold);
            color: black;
        }
        @media (max-width: 768px) {
            .hero-section h1 { font-size: 2.5rem; }
            .hero-section p { font-size: 1.1rem; }
            .section-title { margin-bottom: 2.5rem; }
        }