:root {
            --primary-color: #0d3b6c;
            --secondary-color: #c19a5f;
            --accent-color: #2a6496;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --text-color: #333;
            --border-radius: 8px;
            --transition-speed: 0.3s;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
            background-color: #fff;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all var(--transition-speed) ease;
        }
        a:hover {
            color: var(--secondary-color);
        }
        .container-fluid { padding: 0 15px; }
        .section-padding { padding: 80px 0; }
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 15px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
        }
        .section-title.center {
            text-align: center;
        }
        .section-title.center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: #666;
            margin-bottom: 3rem;
            max-width: 800px;
        }
        .btn-primary-custom {
            background-color: var(--primary-color);
            color: white;
            padding: 12px 30px;
            border-radius: var(--border-radius);
            border: 2px solid var(--primary-color);
            font-weight: 600;
            transition: all var(--transition-speed) ease;
        }
        .btn-primary-custom:hover {
            background-color: transparent;
            color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .btn-secondary-custom {
            background-color: var(--secondary-color);
            color: white;
            padding: 12px 30px;
            border-radius: var(--border-radius);
            border: 2px solid var(--secondary-color);
            font-weight: 600;
            transition: all var(--transition-speed) ease;
        }
        .btn-secondary-custom:hover {
            background-color: transparent;
            color: var(--secondary-color);
        }
        .card-custom {
            border: none;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
            height: 100%;
            background: #fff;
        }
        .card-custom:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }
        .card-body-custom {
            padding: 25px;
        }
        .card-title-custom {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        .text-primary-custom { color: var(--primary-color) !important; }
        .text-secondary-custom { color: var(--secondary-color) !important; }
        .bg-light-custom { background-color: var(--light-color); }
        .navbar-custom {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            padding: 15px 0;
            transition: all var(--transition-speed) ease;
        }
        .navbar-custom.scrolled {
            padding: 10px 0;
            background-color: rgba(255, 255, 255, 0.98);
        }
        .navbar-brand-custom {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }
        .navbar-brand-custom img {
            margin-right: 10px;
            height: 45px;
        }
        .nav-link-custom {
            color: var(--dark-color) !important;
            font-weight: 600;
            padding: 8px 15px !important;
            margin: 0 5px;
            border-radius: var(--border-radius);
            position: relative;
        }
        .nav-link-custom:hover, .nav-link-custom.active {
            color: var(--primary-color) !important;
            background-color: rgba(13, 59, 108, 0.05);
        }
        .hero-section {
            background: linear-gradient(rgba(13, 59, 108, 0.85), rgba(13, 59, 108, 0.9)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 160px 0 120px;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            margin-bottom: 2.5rem;
            max-width: 700px;
            opacity: 0.9;
        }
        .stats-item {
            text-align: center;
            padding: 20px;
        }
        .stats-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--secondary-color);
            display: block;
            line-height: 1;
        }
        .stats-label {
            font-size: 1rem;
            color: var(--dark-color);
            margin-top: 10px;
        }
        .icon-box {
            width: 80px;
            height: 80px;
            background: rgba(193, 154, 95, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: var(--secondary-color);
            font-size: 2rem;
        }
        .flink {
            display: inline-block;
            padding: 10px 20px;
            margin: 8px;
            background-color: #f5f5f5;
            border-radius: 6px;
            color: var(--dark-color);
            border: 1px solid #e0e0e0;
            font-weight: 500;
            transition: all var(--transition-speed) ease;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .footer {
            background-color: #1a1a1a;
            color: #aaa;
            padding: 70px 0 30px;
        }
        .footer a { color: #ccc; }
        .footer a:hover { color: var(--secondary-color); }
        .footer-title {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--secondary-color);
        }
        .contact-info li { margin-bottom: 15px; display: flex; align-items: flex-start; }
        .contact-info i { margin-right: 12px; color: var(--secondary-color); margin-top: 5px; }
        .copyright {
            border-top: 1px solid #333;
            padding-top: 25px;
            margin-top: 50px;
            text-align: center;
            font-size: 0.9rem;
            color: #888;
        }
        .news-item {
            margin-bottom: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid #eee;
        }
        .news-item:last-child { border-bottom: none; }
        .news-date {
            background: var(--primary-color);
            color: white;
            padding: 8px 15px;
            border-radius: 4px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 15px;
        }
        .modal-content { border-radius: var(--border-radius); overflow: hidden; }
        @media (max-width: 992px) {
            .hero-title { font-size: 2.8rem; }
            .section-title { font-size: 2.2rem; }
            .section-padding { padding: 60px 0; }
        }
        @media (max-width: 768px) {
            .hero-title { font-size: 2.3rem; }
            .section-title { font-size: 1.9rem; }
            .hero-section { padding: 120px 0 80px; }
            .navbar-collapse { background: white; padding: 15px; border-radius: var(--border-radius); margin-top: 15px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
        }
        @media (max-width: 576px) {
            .hero-title { font-size: 2rem; }
            .section-title { font-size: 1.7rem; }
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 10px;
            color: white;
            transition: all var(--transition-speed) ease;
        }
        .social-icons a:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
        }
        .form-control-custom {
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            padding: 12px 15px;
            font-size: 1rem;
            transition: all var(--transition-speed) ease;
        }
        .form-control-custom:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(13, 59, 108, 0.25);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            z-index: 999;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-speed) ease;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover { background: var(--secondary-color); }
        .timeline { position: relative; max-width: 1200px; margin: 0 auto; }
        .timeline::after { content: ''; position: absolute; width: 6px; background-color: #e0e0e0; top: 0; bottom: 0; left: 50%; margin-left: -3px; }
        .timeline-item { padding: 10px 40px; position: relative; width: 50%; box-sizing: border-box; }
        .timeline-item:nth-child(odd) { left: 0; }
        .timeline-item:nth-child(even) { left: 50%; }
        .timeline-content { padding: 20px 30px; background: white; border-radius: var(--border-radius); box-shadow: 0 5px 15px rgba(0,0,0,0.08); }
        .timeline-item::after { content: ''; position: absolute; width: 25px; height: 25px; right: -13px; background-color: var(--secondary-color); border: 4px solid white; top: 20px; border-radius: 50%; z-index: 1; }
        .timeline-item:nth-child(even)::after { left: -12px; }
        @media (max-width: 768px) {
            .timeline::after { left: 31px; }
            .timeline-item { width: 100%; padding-left: 70px; padding-right: 25px; }
            .timeline-item:nth-child(even) { left: 0; }
            .timeline-item::after { left: 18px; }
            .timeline-item:nth-child(even)::after { left: 18px; }
        }