@charset "utf-8";
* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
            overflow: hidden;
            height: 100vh;
            position: relative;
        }
        
        /* 背景图片 */
        .background {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to bottom, #1a2980, #26d0ce);
            z-index: 1;
        }
        
        .background-img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('../img/index/indexbg.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.4;
            z-index: 2;
        }
        
        /* 蓝天大海背景 */
        .sky-sea {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(135, 206, 235, 0.7) 0%, rgba(30, 144, 255, 0.6) 30%, rgba(0, 0, 139, 0.5) 100%);
            z-index: 3;
        }
        
        /* 主内容容器 */
        .container {
            position: relative;
            z-index: 10;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            height: 100vh;
            text-align: center;
            color: white;
            padding: 20px;
        }
        
        /* 公司名称样式 */
        .company-name {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
            letter-spacing: 5px;
            animation: fadeInDown 1.2s ease-out;
        }
        
        .company-subtitle {
            font-size: 1.8rem;
            font-weight: 300;
            margin-bottom: 40px;
            text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
            animation: fadeInUp 1.2s ease-out 0.3s both;
        }
        
        /* 欢迎文本 */
        .welcome-text {
            font-size: 2.2rem;
            font-weight: 500;
            margin: 30px 0;
            padding: 20px 40px;
            background-color: rgba(0, 0, 0, 0.3);
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            animation: pulse 2s infinite 1.5s;
        }
        
        /* 倒计时 */
        .countdown {
            font-size: 1.5rem;
            margin-top: 30px;
            background-color: rgba(255, 255, 255, 0.2);
            padding: 10px 25px;
            border-radius: 50px;
            animation: fadeIn 1.5s ease-out 1s both;
        }
        
        .countdown-number {
            font-weight: bold;
            color: #FFD700;
            font-size: 2rem;
        }
        
        /* 底部信息 */
        .footer {
            position: absolute;
            bottom: 30px;
            width: 100%;
            text-align: center;
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            z-index: 10;
            animation: fadeIn 1.5s ease-out 1.5s both;
        }
        
        /* 石油行业元素装饰 */
        .oil-industry-elements {
            position: absolute;
            width: 100%;
            height: 100%;
            z-index: 5;
            pointer-events: none;
        }
        
        .oil-rig {
            position: absolute;
            bottom: 0;
            right: 10%;
            width: 200px;
            height: 200px;
            background-image: url('../img/index/3097140.png');
            background-size: contain;
            background-repeat: no-repeat;
            opacity: 0.3;
        }
        .tubiao {
            position: absolute;
            top: 8%;
            left: 8%;
            width: 200px;
            height: 200px;
            background-image: url('../img/index/tubiao.png');
            background-size: contain;
            background-repeat: no-repeat;
            opacity: 0.8;
        }
        .waves {
            position: absolute;
            bottom: 0;
            width: 100%;
            height: 100px;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%230099ff" fill-opacity="0.4" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            z-index: 4;
        }
        
        /* 动画定义 */
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }
        
        @keyframes pulse {
            0% {
                transform: scale(1);
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            }
            50% {
                transform: scale(1.05);
                box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
            }
            100% {
                transform: scale(1);
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            }
        }
        
        @keyframes wave {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .company-name {
                font-size: 2.5rem;
                letter-spacing: 3px;
            }
            
            .company-subtitle {
                font-size: 1.3rem;
            }
            
            .welcome-text {
                font-size: 1.8rem;
                padding: 15px 25px;
            }
            
            .countdown {
                font-size: 1.2rem;
            }
            
            .countdown-number {
                font-size: 1.5rem;
            }
        }