const RemainSec = 2207079000 ;
function countDown() {
    let inc_num = 1;
    const formatTime = (time) => time < 10 ? `0${time}` : time;
    function updateCountdown() {
        const timeRemaining = RemainSec - 1000 * inc_num;
        
        if (timeRemaining <= 0) {
            console.log('倒计时结束！');
            return {
                days: 0,
                hours: 0,
                minutes: 0,
                seconds: 0
            };
        }
        
        // 计算剩余天数、小时、分钟、秒
        const days = Math.floor(timeRemaining / (1000 * 60 * 60 * 24));
        const hours = Math.floor((timeRemaining % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
        const minutes = Math.floor((timeRemaining % (1000 * 60 * 60)) / (1000 * 60));
        const seconds = Math.floor((timeRemaining % (1000 * 60)) / 1000);
        
        document.querySelector('.d1').innerText = formatTime(days);
        document.querySelector('.d2').innerText = formatTime(hours);
        document.querySelector('.d3').innerText = formatTime(minutes);
        document.querySelector('.d4').innerText = formatTime(seconds);
        return { days, hours, minutes, seconds };
    }
    
    // 立即返回一次
    updateCountdown();
    
    // 每秒更新一次
    const intervalId = setInterval(() => {
        const countdown = updateCountdown();
        if (countdown.days === 0 && countdown.hours === 0 && countdown.minutes === 0 && countdown.seconds === 0) {
            //document.querySelector('.time').style.display = 'none';
            clearInterval(intervalId);
        } else {
            inc_num += 1;
        }
    }, 1000); 
}
countDown();