* {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

@font-face {
  font-family: 'Roboto-Regular';
  src: url('../font/roboto/Roboto-Regular.ttf');
}
@font-face {
  font-family: 'msyh';
  src: url('../font/msyh/msyh.ttc');
}

a {
  color: #5a5a5a;
}

img {
  vertical-align: bottom;
}

body {
  padding: 0;
  margin: 0;
  font-family: 'Roboto-Regular', 'msyh';
  letter-spacing: 1px;
}

.container {
  margin: 0 15px;
}

.ponit {
  color: #F00;
}

@media screen and (min-width: 960px) {
  .container {
    margin: 0 auto;
    width: 930px;
  }
}

/* ==================================================== header */
header {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #28A9E0;
  height: 44px;
  text-align: center;
  color: #fff;
}
header .logo-icon {
  display: inline-block;
 /* background-image: url('../img/ibet-white-cn.svg'); */
  background-repeat: no-repeat;
  background-size: 100% 100%;
  /* width: 55px; */
  height: 20px;
  text-decoration: none;
}
.logo-icon div{
	color: #FFFFFF;
	font-size: 19px;
	
}
header .logo-icon h1 {
  display: inline-block;
  font-size: 0;
  color: transparent;
}
@media screen and (min-width: 960px) {
  header {
    padding-top: 23px;
    background-color: #fff;
    height: 96px;
    text-align: left;
	padding-bottom: 10px;
  }
  header .logo-icon {
    background-image: url('../img/logo.png');
    width: 190px;
    height: 70px;
  }
}

/* ==================================================== footer */
footer {
  color: #fff;
}

footer .tip {
  padding-top: 15px;
  padding-bottom: 15px;
  background-color: #3a3a3a;
  text-align: justify;
  font-size: 14px;
}

footer .download {
  padding-top: 20px;
  padding-bottom: 30px;
  border-bottom: 1px solid #5a5a5a;
  background-color: #2a2a2a;
}

footer .download h3 {
  margin: 0 0 15px 0;
  font-size: 12px;
}

footer .download ul {
  opacity: .7;
  display: flex;
  justify-content: space-around;
  margin: 0;
  padding-left: 0;
  list-style: none;
}

footer .download ul li {

}

footer .download ul li a {
  display: inline-block;
  color: #fff;
  text-decoration: none;
  text-align: center;
  font-size: 12px;
}

footer .download ul li a img {
  margin-bottom: 5px;
  width: 30px;
  height: 30px;
}

footer .download ul li a span {
  display: block;
}

footer .copyright-box {
  padding-top: 20px;
  padding-bottom: 20px;
  background-color: #2a2a2a;
  text-align: center;
}

footer .copyright-box img {
  margin: 0 auto 15px auto;
  display: block;
  width: auto;
  height: 20px;
}

footer .copyright-box small {
  opacity: .7;
  font-size: 12px;
  line-height: 20px;
}


@media screen and (min-width: 760px) {
  footer .download ul {
    justify-content: space-around;
  }
  footer .copyright-box img {
    margin: 0 20px 0 0;
    display: inline-block;
  }
}

@media screen and (min-width: 960px) {
  footer .copyright-box .container {
    display: flex;
    justify-content: space-around;
  }
}

/* ==================================================== 教程選擇 */
.tutorial-select {
  display: flex;
  align-items: center;
}
.tutorial-select .left-btn a,
.tutorial-select .right-btn a {
  text-decoration: none;
  width: 100%;
  height: 100%;
}
.tutorial-select .left-btn {
  position: relative;
  flex: 0 1 auto;
  padding-left: 10px;
  padding-right: 10px;
  transform: rotate(90deg);
}
.tutorial-select .left-btn::after {
  position: absolute;
  left: 50%;
  top: 130%;
  content: '';
  display: inline-block;
  width: 1px;
  height: 30px;
  background-color: #000;
}
.tutorial-select .img {
  flex: 1 1 auto;
  background-size: auto 100%;
  background-repeat: no-repeat;
  background-position: center top;
  height: 330px;
  line-height: 330px;
  font-size: 30px;
  text-align: center;
  color: #fff;
}
.tutorial-select .img.web {
  background-image: url('../img/computer-tutorial.jpg');
}
.tutorial-select .img.mobile {
  background-image: url('../img/mobile-tutorial.jpg');
}
.tutorial-select .img.tablet {
  background-image: url('../img/tablet-tutorial.jpg');
}
.tutorial-select .img .img-bg {
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, .3);
}
@media screen and (min-width: 620px) {
  .tutorial-select .img {
    height: 500px;
    line-height: 500px;
  }
}
@media screen and (min-width: 970px) {
  .tutorial-select .img {
    background-size: 100% auto;
    font-size: 60px;
  }
}
.tutorial-select .right-btn {
  flex: 0 1 auto;
  padding-left: 10px;
  padding-right: 10px;
  transform: rotate(90deg);
}
.tutorial-select .right-btn::after {
  position: absolute;
  left: 50%;
  top: -130%;
  content: '';
  display: inline-block;
  width: 1px;
  height: 30px;
  background-color: #000;
}


/* ==================================================== 教程按鈕. */
.tutorial-button-box {
  position: relative;
  margin: 0 15px;
  padding: 30px 0;
}
@media screen and (min-width: 620px) {
  .tutorial-button-box {
    padding: 60px 0;
  }
}
.tutorial-button-title {
  position: relative;
  display: inline-block;
  padding: 12px 20px;
  border-radius: 2px;
  border: 1px solid #1C98CC;
  width: 100%;
  height: 100%;
  background-color: #1C98CC;
  color: #fff;
  text-decoration: none;
  cursor: pointer;
}
.tutorial-button-title::after {
  position: absolute;
  right: 40px;
  display: inline-block;
  content: '\f107';
  font: normal normal normal 14px/1 FontAwesome;
  font-size: inherit;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  line-height: 22px;
}
@media screen and (min-width: 620px) {
  .tutorial-button-title {
    display: none;
  }
}
.tutorial-button {
  position: absolute;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 0;
  padding-left: 0;
  list-style: none;
  font-size: 16px;
}
@media screen and (min-width: 620px) {
  .tutorial-button {
    position: static;
    flex-direction: row;
  }
}
.tutorial-button li {
  border: 1px solid #1C98CC;
  border-top: none;
  background-color: #fff;
}
@media screen and (min-width: 620px) {
  .tutorial-button li {
    margin-right: 30px;
    border-radius: 2px;
    border-top: 1px solid #1C98CC;
  }
}
.tutorial-button li:last-child {
  margin-right: 0;
  border-bottom-left-radius: 2px;
  border-bottom-right-radius: 2px;
}
.tutorial-button li a {
  display: inline-block;
  padding: 12px 20px;
  width: 100%;
  height: 100%;
  color: #1C98CC;
  text-decoration: none;
  transition: all 500ms;
}
.tutorial-button li a:hover {
  background-color: #28A9E0;
  color: #fff;
}
@media screen and (min-width: 620px) {
  .tutorial-button li a {
    width: 180px;
  }
  .tutorial-button li.active a {
    background-color: #1C98CC;
    color: #fff;
  }
}

/* ==================================================== 步驟 */

.main-box {
  padding: 0 15px;
}

.main-box img {
  max-width: 275px;
  width: 100%;
  height: auto;
}

.main-box img.img-508 {
  max-width: 508px;
}

/* ==================================================== 返回鍵 */
.back {
  margin: 50px 0;
}
.back a {
  text-decoration: none;
}
.back a span{
  font-size: 16px;
  color: #28A9E0;
}
.back a img{
  display: inline-block;
  width: 10px;
  height: 22px;
}