* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Microsoft YaHei', 'Arial', sans-serif;
            line-height: 1.6;
            color: #000;
            background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
            min-height: 100vh;
            padding: 20px;
        }

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

        .header {
            background: linear-gradient(135deg, #ff6b9d 0%, #c66cfd 100%);
            color: #000;
            padding: 3rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-radius: 20px;
            margin-bottom: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .header h1 {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
            position: relative;
            z-index: 2;
        }

        .header p {
            font-size: 1.2rem;
            opacity: 0.9;
            position: relative;
            z-index: 2;
        }

        .header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: float 20s infinite linear;
        }

        @keyframes float {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .intro-section {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 2.5rem;
            margin-bottom: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .intro-content h2 {
            color: #000;
            font-size: 2rem;
            margin-bottom: 1.5rem;
            text-align: center;
        }

        .intro-content p {
            color: #000;
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 2rem;
            text-align: center;
        }

        .university-link {
            display: inline-block;
            background: linear-gradient(135deg, #ff6b9d 0%, #c66cfd 100%);
            color: #000;
            text-decoration: none;
            padding: 1rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            margin-bottom: 1rem;
            box-shadow: 0 5px 15px rgba(255, 107, 157, 0.3);
        }

        .university-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 107, 157, 0.4);
        }

        .section-title {
            text-align: center;
            font-size: 2rem;
            color: #000;
            margin-bottom: 3rem;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 3px;
            background: #ff6b9d;
            margin: 1rem auto;
        }

        .contacts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .contact-card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.3);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
        }

        .contact-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.15);
            border-color: #ff6b9d;
        }

        .contact-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(135deg, #ff6b9d 0%, #c66cfd 100%);
            transform: scaleY(0);
            transition: transform 0.3s ease;
        }

        .contact-card:hover::before {
            transform: scaleY(1);
        }

        .college-name {
            font-size: 1.3rem;
            font-weight: 600;
            color: #000;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .college-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, #ff6b9d 0%, #c66cfd 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 0.9rem;
            font-weight: bold;
        }

        .qq-number {
            font-size: 1.2rem;
            font-weight: 600;
            color: #ff6b9d;
            font-family: 'Courier New', monospace;
            margin-bottom: 1rem;
        }

        .copy-btn {
            background: linear-gradient(135deg, #ff6b9d 0%, #c66cfd 100%);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 25px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(255, 107, 157, 0.3);
        }

        .copy-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 157, 0.4);
        }

        .copy-btn:active {
            transform: translateY(0);
        }

        .tag {
            display: inline-block;
            background: linear-gradient(135deg, #ff6b9d 0%, #c66cfd 100%);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 0.5rem;
            box-shadow: 0 2px 10px rgba(255, 107, 157, 0.3);
        }

        .art-group {
            background: linear-gradient(135deg, rgba(255, 236, 246, 0.95) 0%, rgba(252, 239, 252, 0.95) 100%);
            border-left: 4px solid #ff6b9d;
        }

        .tech-group {
            background: linear-gradient(135deg, rgba(236, 246, 255, 0.95) 0%, rgba(239, 244, 252, 0.95) 100%);
            border-left: 4px solid #6b9dff;
        }

        .sports-group {
            background: linear-gradient(135deg, rgba(236, 255, 236, 0.95) 0%, rgba(239, 252, 239, 0.95) 100%);
            border-left: 4px solid #6bff6b;
        }

        .interest-group {
            background: linear-gradient(135deg, rgba(255, 246, 236, 0.95) 0%, rgba(252, 248, 239, 0.95) 100%);
            border-left: 4px solid #ffcb6b;
        }

        .special-group {
            background: linear-gradient(135deg, rgba(246, 236, 255, 0.95) 0%, rgba(248, 239, 252, 0.95) 100%);
            border-left: 4px solid #cb6bff;
        }

        .footer {
            background: linear-gradient(135deg, #ff6b9d 0%, #c66cfd 100%);
            color: #000;
            padding: 2rem;
            text-align: center;
            border-radius: 20px;
            margin-top: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .footer p {
            margin-bottom: 0.5rem;
        }

        .footer a {
            color: #ffeb3b;
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s ease;
        }

        .footer a:hover {
            color: #fff;
        }

        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            background: linear-gradient(135deg, #4caf50 0%, #8bc34a 100%);
            color: white;
            padding: 1rem 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(76, 175, 80, 0.4);
            opacity: 0;
            transform: translateX(100%);
            transition: all 0.3s ease;
            z-index: 1000;
            font-weight: 600;
        }

        .notification.show {
            opacity: 1;
            transform: translateX(0);
        }

        @media (max-width: 768px) {
            .header h1 {
                font-size: 2.2rem;
            }

            .header p {
                font-size: 1rem;
            }

            .contacts-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .contact-card {
                padding: 1.5rem;
            }

            .intro-section {
                padding: 2rem;
            }

            .section-title {
                font-size: 1.8rem;
            }
        }

        .art-pattern {
            background-image: 
                repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255, 107, 157, 0.05) 35px, rgba(255, 107, 157, 0.05) 70px),
                repeating-linear-gradient(-45deg, transparent, transparent 35px, rgba(198, 108, 253, 0.03) 35px, rgba(198, 108, 253, 0.03) 70px);
            background-size: 100% 100%;
        }