:root {
            --primary-color: #c33c5e;
            --secondary-color: #2a2a3c;
            --accent-color: #f8b500;
            --light-bg: #f9f9fb;
            --dark-text: #333;
            --light-text: #666;
        }
        body {
            font-family: "Microsoft YaHei", "SF Pro SC", "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
            color: var(--dark-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(rgba(42, 42, 60, 0.85), rgba(42, 42, 60, 0.9)), url('https://images.unsplash.com/photo-1511795409834-ef04bbd61622?ixlib=rb-4.0.3&auto=format&fit=crop&w=2069&q=80') center/cover no-repeat;
            color: white;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: 120px;
        }
        .nav-bar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            padding: 15px 0;
        }
        .nav-bar.scrolled {
            padding: 8px 0;
            background-color: rgba(255, 255, 255, 0.98);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 10px;
            color: var(--secondary-color) !important;
            transition: color 0.3s;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            left: 50%;
            bottom: -5px;
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 80%;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
            font-weight: 700;
            color: var(--secondary-color);
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .card-hover {
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
        }
        .card-hover:hover {
            transform: translateY(-12px);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.15);
        }
        .btn-primary-custom {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            color: white;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background-color: #a83250;
            border-color: #a83250;
            transform: scale(1.05);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), #e84a7a);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
        }
        .footer {
            background-color: var(--secondary-color);
            color: #bbb;
            padding-top: 60px;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
        }
        .friendlink .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background-color: #f1f1f1;
            border-radius: 20px;
            color: var(--secondary-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #ddd;
        }
        .friendlink .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .video-thumbnail {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 15px;
        }
        .video-thumbnail img {
            transition: transform 0.5s ease;
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .video-thumbnail:hover img {
            transform: scale(1.08);
        }
        .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 60px;
            height: 60px;
            background-color: rgba(195, 60, 94, 0.85);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .video-thumbnail:hover .play-btn {
            opacity: 1;
        }
        .badge-custom {
            background-color: var(--accent-color);
            color: var(--secondary-color);
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background-color: var(--primary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 30px;
            padding-left: 25px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -33px;
            top: 5px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--primary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary-color);
        }
        .img-frame {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        .img-frame img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }
        .img-frame:hover img {
            transform: scale(1.05);
        }
        .stats-box {
            background-color: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            text-align: center;
            transition: transform 0.3s ease;
        }
        .stats-box:hover {
            transform: translateY(-8px);
        }
        .stats-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 70vh;
                padding-top: 100px;
                text-align: center;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .nav-link {
                margin: 5px 0;
                text-align: center;
            }
        }