@media only screen and (min-width: 1600px) and (max-width: 1919px) {
    .w {
        width: 1396px;
    }
    .Tophead.w {
        width: 1500px;
    }
    .top .item .menu a {
        padding: 0 30px;
    }
    .search {
        width: 326px;
        margin: 8px 0 0 50px;
    }
    .top .item .logo {
        width: 190px;
    }
    .search input {
        width: 240px;
    }
    .top .item .menu {
        margin-left: 100px;
    }
    .top .item .exhi-ico a {
        width: 118px;
        height: 40px;
        line-height: 40px;
        font-size: 16px;
    }
    .top .item .exhi-ico a.guanzong {
        border: 1px solid #52a1f5;
    }
    .banner {
    	height: 426px;
    }
    .banner .item .bot {
        bottom: 80px;
    }
    .nav ul li {
        height: 70px;
        line-height: 70px;
        width: 170px;
    }
    .nav a {
        font-size: 20px;
    }
    .nav li::after {
        height: 5px;
    }
    .nav li:hover::after {
        width: 58px;
    }
    .introduction {
        height: 547px;
    }
    .introduction .live {
        margin-right: 36px;
        width: 715px;
    }
    .introduction::after {
        height: 198px;
    }
    .introduction .main {
        top: 55px;
        height: 438px;
        padding: 18px;
    }
    .introduction .content b {
        margin-top: 25px;
        font-size: 30px;
        line-height: 38px;
        max-height: 76px;
    }
    .introduction .content .after {
        margin-top: 20px;
    }
    .introduction .content p {
        line-height: 30px;
        height: 240px;
    }
    .expo_title {
        height: 207px;
    }
    .expo_title b {
        margin-top: 52px;
        font-size: 60px;
    }
    .expo_title p {
        font-size: 22px;
    }
    .agenda-nav {
        height: 62px;
        line-height: 62px;
    }
    .agenda-nav a.focus {
        height: 72px;
        line-height: 72px;
    }
    .agenda-nav a {
        font-size: 20px;
        padding: 0 40px;
    }
    .agenda-list {
        padding: 63px 27px 47px 27px;
    }
    .agenda-list p {
        font-size: 30px;
    }
    .agenda-list b {
        margin-top: 26px;
    }
    .agenda-list ul li {
        height: 48px;
        line-height: 48px;
    }
    .agenda-list .btn {
        width: 216px;
        font-size: 22px;
        height: 64px;
        line-height: 64px;
    }
    .agenda-list ul li .center {
        width: 625px;
    }
    .agenda-list ul li .right {
        width: 420px;
    }
    .guests ul li .item {
        height: 322px;
    }
    .guests ul li .item .text p span {
        height: 20px;
        line-height: 20px;
    }
    .guests ul li .item .text b {
        font-size: 20px;
    }
    .guests ul li .item .text {
        padding: 10px 18px 10px 18px;
    }
    .guests ul li .item .text p {
        margin-top: 8px;
    }
    .guests ul li .item .text:hover p {
        max-height: 60px;
        margin-top: 12px;
    }
    .guests ul {
        margin: -9px;
    }
    .guests ul li {
        padding: 9px;
    }

    .bright {
        margin-top: 52px;
        height: 788px;
    }
    .bright .expo_title {
        height: 150px;
    }
    .bright .expo_title b {
        margin-top: 40px;
    }
    .bright .left .bright-title-t {
        font-size: 26px;
    }
    .bright .bright-title-t span {
        font-size: 32px;
    }
    .bright .bright-title b {
        font-size: 72px;
    }
    .bright .bright-title-t {
        height: 72px;
        line-height: 72px;
    }
    .bright .bright-title {
        height: 125px;
    }
    .bright .item p {
        font-size: 16px;
        line-height: 28px;
        height: 56px;
        padding: 0 30px;
        margin-top: 18px;
    }
    .bright .left .item:last-child {
        margin-top: 80px;
    }
    .bright .right .item:last-child {
        margin-top: 80px;
    }

    .activities_title b {
        font-size: 60px;
    }
    .activities_title p {
        font-size: 22px;
    }
    .activities-nav a {
        font-size: 22px;
        padding: 25px 40px;
    }
    .activities-nav {
        margin: 10px 0 0 66px;
    }
    .activities {
        padding: 40px 0 60px 0;
    }
    .activities::after {
        height: 670px;
    }
    .activities-list .item {
        margin-top: 35px;
    }
    .activities-list {
        margin-top: 40px;
        padding: 0 27px 52px 27px;
    }
    .activities-list b {
        font-size: 26px;
    }
    .activities-list ul li {
        height: 49px;
        line-height: 49px;
    }
    .activities-list ul {
        margin-top: 15px;
    }
    .activities-list ul li .center {
        width: 470px;
    }
    .activities-list ul li .right {
        width: 440px;
    }
    .footer-title {
        font-size: 22px;
    }
    .footer .left {
        width: 950px;
    }
    .footer .left .btn {
        width: 116px;
        height: 33px;
        line-height: 33px;
    }
    .footer .left .btn i {
        margin-right: 5px;
        font-size: 18px;
    }
    .footer .left b i {
        font-size: 28px;
    }
    .footer .left b {
        margin-right: 10px;
    }
    .footer .left ul li {
        width: 310px;
    }
    .footer .right ul li b {
        padding: 24px 10px;
        height: 162px;
        width: 36px;
    }
    .footer .right ul li .image {
        width: 162px;
        height: 162px;
    }
    .footer {
        padding: 42px 0 87px 0;
    }
}
@media only screen and (min-width: 1440px) and (max-width: 1599px) {
    .w {
        width: 1236px;
    }
    .top .item .menu a {
        padding: 0 30px;
    }
    .search {
        width: 290px;
        margin: 8px 0 0 50px;
    }
    .top .item .logo {
        width: 160px;
    }
    .search {
        height: 32px;
    }
    .search input {
        height: 32px;
    }
    .search input {
        width: 200px;
    }
    .search button {
        width: 70px;
        font-size: 14px;
        height: 34px;
        line-height: 34px;
    }
    .top .item .menu {
        margin-left: 70px;
        margin-top: 13px;
    }
    .top .item .exhi-ico a {
        width: 105px;
        height: 36px;
        line-height: 36px;
        font-size: 14px;
    }
    .top .item .exhi-ico a.guanzong {
        border: 1px solid #52a1f5;
    }
    .banner {
    	height: 384px;
    }
    .banner .item .bot {
        bottom: 60px;
    }
    .banner .item .bot b {
        font-size: 38px;
        width: 64px;
        height: 56px;
        line-height: 56px;
        margin: 0 22px;
    }
    .nav ul li {
        height: 64px;
        line-height: 64px;
        width: 150px;
    }
    .nav a {
        font-size: 18px;
    }
    .nav li::after {
        height: 5px;
    }
    .nav li:hover::after {
        width: 58px;
    }
    .introduction {
        height: 486px;
    }
    .introduction .live {
        margin-right: 32px;
        width: 634px;
    }
    .introduction::after {
        height: 174px;
    }
    .introduction .main {
        top: 52px;
        height: 388px;
        padding: 16px;
    }
    .introduction .content b {
        margin-top: 25px;
        font-size: 26px;
        line-height: 32px;
        max-height: 64px;
    }
    .introduction .content .after {
        margin-top: 20px;
    }
    .introduction .content p {
        line-height: 26px;
        font-size: 14px;
        height: 208px;
        margin-top: 22px;
    }
    .introduction .live .image span {
        width: 58px;
        height: 58px;
    }
    .expo_title {
        height: 186px;
    }
    .expo_title b {
        margin-top: 45px;
        font-size: 54px;
    }
    .expo_title p {
        font-size: 20px;
    }
    .agenda-nav {
        height: 54px;
        line-height: 54px;
    }
    .agenda-nav a.focus {
        height:64px;
        line-height: 64px;
    }
    .agenda-nav a {
    	font-size: 18px;
        padding: 0 35px;
    }
    .agenda-list {
        padding: 50px 24px 40px 24px;
    }
    .agenda-list p {
        font-size: 26px;
    }
    .agenda-list b {
        margin-top: 22px;
    }
    .agenda-list ul li {
        height: 42px;
        line-height: 42px;
        font-size: 14px;
    }
    .agenda-list ul li .left {
        width: 230px;
    }
    .agenda-list ul li .center {
        width: 570px;
    }
    .agenda-list ul li .right {
        width: 380px;
    }
    .agenda-list .btn {
        width: 190px;
        font-size: 20px;
        height: 58px;
        line-height: 58px;
        margin: 38px auto 0;
    }
    .guests ul li .item {
        height: 285px;
    }
    .guests ul li .item .text p span {
        height: 20px;
        line-height: 20px;
    }
    .guests ul li .item .text b {
        font-size: 20px;
    }
    .guests ul li .item .text {
        padding: 10px 18px 10px 18px;
    }
    .guests ul li .item .text p {
        margin-top: 8px;
    }
    .guests ul li .item .text:hover p {
        max-height: 60px;
        margin-top: 12px;
    }
    .guests ul {
        margin: -8px;
    }
    .guests ul li {
        padding: 8px;
    }

    .bright {
        margin-top: 46px;
        height: 698px;
    }
    .bright .expo_title {
        height: 140px;
    }
    .bright .expo_title b {
        margin-top: 35px;
    }
    .bright .left .bright-title-t {
        font-size: 26px;
    }
    .bright .bright-title-t span {
        font-size: 32px;
    }
    .bright .bright-title b {
        font-size: 62px;
    }
    .bright .bright-title-t {
        height: 64px;
        line-height: 64px;
    }
    .bright .bright-title {
        height: 110px;
    }
    .bright .item p {
        font-size: 14px;
        line-height: 25px;
        height: 50px;
        padding: 0 25px;
        margin-top: 14px;
    }
    .bright .left .item:last-child {
        margin-top: 50px;
    }
    .bright .right .item:last-child {
        margin-top: 50px;
    }

    .activities_title b {
        font-size: 54px;
    }
    .activities_title p {
        font-size: 20px;
    }
    .activities-nav a {
        font-size: 20px;
        padding: 22px 35px;
    }
    .activities-nav {
        margin: 10px 0 0 66px;
    }
    .activities {
        padding: 40px 0 50px 0;
    }
    .activities::after {
        height: 595px;
    }
    .activities-list .item {
        margin-top: 25px;
    }
    .activities-list {
        margin-top: 40px;
        padding: 0 24px 46px 24px;
    }
    .activities-list b {
        font-size: 22px;
        height: 30px;
        line-height: 30px;
    }
    .activities-list ul li {
        height: 45px;
        line-height: 45px;
        font-size: 14px;
    }
    .activities-list ul li .left {
        width: 230px;
    }
    .activities-list ul li .center {
        width: 420px;
    }
    .activities-list ul li .right {
        width: 420px;
    }
    .activities-list ul li.first {
        height: 48px;
        line-height: 48px;
    }
    .activities-list ul {
        margin-top: 15px;
    }
    .footer-title {
        font-size: 20px;
    }
    .footer .left {
        width: 840px;
    }
    .footer .left .btn {
        width: 116px;
        height: 33px;
        line-height: 33px;
    }
    .footer .left .btn i {
        margin-right: 5px;
        font-size: 18px;
    }
    .footer .left b i {
        font-size: 28px;
    }
    .footer .left b {
        margin-right: 10px;
    }
    .footer .left ul li {
        width: 260px;
    }
    .footer .right ul li b {
        padding: 22px 10px;
        height: 142px;
        width: 36px;
        font-size: 14px;
    }
    .footer .right ul li .image {
        width: 142px;
        height: 142px;
    }
    .footer {
        padding: 38px 0 78px 0;
    }
}
@media only screen and (min-width: 1366px) and (max-width: 1439px) {
    .w {
        width: 1164px;
    }
    .top .item .menu a {
        padding: 0 24px;
        font-size: 16px;
    }
    .search {
        width: 290px;
        margin: 8px 0 0 50px;
    }
    .top .item .logo {
        width: 160px;
    }
    .search {
        height: 32px;
    }
    .search input {
        height: 32px;
    }
    .search input {
        width: 200px;
    }
    .search button {
        width: 70px;
        font-size: 14px;
        height: 34px;
        line-height: 34px;
    }
    .top .item .menu {
        margin-left: 70px;
        margin-top: 13px;
    }
    .top .item .exhi-ico a {
        width: 100px;
        height: 34px;
        line-height: 34px;
        font-size: 14px;
    }
    .top .item .exhi-ico a.guanzong {
        border: 1px solid #52a1f5;
    }
    .banner {
        height: 363px;
    }
    .banner .item .bot {
        bottom: 50px;
        font-size: 18px;
    }
    .banner .item .bot b {
        font-size: 36px;
        width: 64px;
        height: 52px;
        line-height: 52px;
        margin: 0 18px;
    }
    .nav ul li {
        height: 60px;
        line-height: 60px;
        width: 140px;
    }
    .nav a {
        font-size: 18px;
    }
    .nav li::after {
        height: 4px;
    }
    .nav li:hover::after {
        width: 58px;
    }
    .introduction {
        height: 454px;
    }
    .introduction .live {
        margin-right: 30px;
        width: 596px;
    }
    .introduction::after {
        height: 162px;
    }
    .introduction .main {
        top: 44px;
        height: 366px;
        padding: 15px;
    }
    .introduction .content b {
        margin-top: 20px;
        font-size: 24px;
        line-height: 32px;
        max-height: 64px;
    }
    .introduction .content .after {
        margin-top: 20px;
    }
    .introduction .content p {
        line-height: 26px;
        font-size: 14px;
        height: 192px;
        margin-top: 22px;
    }
    .introduction .live .image span {
        width: 58px;
        height: 58px;
    }
    .expo_title {
        height: 175px;
    }
    .expo_title b {
        margin-top: 42px;
        font-size: 50px;
    }
    .expo_title p {
        font-size: 20px;
    }
    .agenda-nav {
        height: 52px;
        line-height: 52px;
    }
    .agenda-nav a.focus {
        height:60px;
        line-height: 60px;
        margin-top: -8px;
    }
    .agenda-nav a {
    	font-size: 16px;
        padding: 0 30px;
    }
    .agenda-nav a.focus {
        padding: 0 45px;
    }
    .agenda-list {
        padding: 40px 23px 38px 23px;
    }
    .agenda-list p {
        font-size: 24px;
    }
    .agenda-list b {
        margin-top: 22px;
    }
    .agenda-list ul li {
        height: 39px;
        line-height: 39px;
        font-size: 14px;
    }
    .agenda-list ul li .left {
        width: 220px;
    }
    .agenda-list ul li .center {
        width: 520px;
    }
    .agenda-list ul li .right {
        width: 370px;
    }
    .agenda-list .btn {
        width: 180px;
        font-size: 20px;
        height: 54px;
        line-height: 54px;
        margin: 36px auto 0;
    }
    .guests ul li .item {
        height: 270px;
    }
    .guests ul li .item .text p span {
        height: 20px;
        line-height: 20px;
        font-size: 12px;
    }
    .guests ul li .item .text b {
        font-size: 18px;
    }
    .guests ul li .item .text {
        padding: 10px 14px 10px 14px;
    }
    .guests ul li .item .text p {
        margin-top: 8px;
    }
    .guests ul li .item .text:hover p {
        max-height: 60px;
        margin-top: 12px;
    }
    .guests ul {
        margin: -8px;
    }
    .guests ul li {
        padding: 8px;
    }

    .bright {
        margin-top: 45px;
        height: 656px;
    }
    .bright .expo_title {
        height: 130px;
    }
    .bright .expo_title b {
        margin-top: 25px;
    }
    .bright .left .bright-title-t {
        font-size: 22px;
    }
    .bright .bright-title-t span {
        font-size: 28px;
    }
    .bright .bright-title b {
        font-size: 60px;
    }
    .bright .bright-title-t {
        height: 60px;
        line-height: 60px;
        font-size: 22px;
    }
    .bright .bright-title {
        height: 105px;
    }
    .bright .item p {
        font-size: 14px;
        line-height: 22px;
        height: 44px;
        padding: 0 22px;
        margin-top: 10px;
    }
    .bright .left .item:last-child {
        margin-top: 40px;
    }
    .bright .right .item:last-child {
        margin-top: 40px;
    }

    .activities_title b {
        font-size: 50px;
    }
    .activities_title p {
        font-size: 18px;
    }
    .activities-nav a {
        font-size: 18px;
        padding: 21px 35px;
    }
    .activities-nav {
        margin: 10px 0 0 66px;
    }
    .activities {
        padding: 40px 0 50px 0;
    }
    .activities::after {
        height: 560px;
    }
    .activities-list .item {
        margin-top: 25px;
    }
    .activities-list {
        margin-top: 40px;
        padding: 0 23px 42px 23px;
    }
    .activities-list b {
        font-size: 20px;
        height: 30px;
        line-height: 30px;
    }
    .activities-list ul li {
        height: 40px;
        line-height: 40px;
        font-size: 14px;
    }
    .activities-list ul li.first {
        height: 45px;
        line-height: 45px;
    }
    .activities-list ul li .left {
        width: 220px;
    }
    .activities-list ul li .center {
        width: 380px;
    }
    .activities-list ul li .right {
        width: 400px;
    }
    .activities-list ul {
        margin-top: 15px;
    }
    .footer-title {
        font-size: 18px;
    }
    .footer .left {
        width: 790px;
    }
    .footer .left .btn {
        width: 100px;
        height: 32px;
        line-height: 32px;
        font-size: 14px;
    }
    .footer .left .btn i {
        margin-right: 5px;
        font-size: 14px;
    }
    .footer .left b i {
        font-size: 28px;
    }
    .footer .left b {
        margin-right: 10px;
    }
    .footer .left .text {
        font-size: 14px;
    }
    .footer .left .text p {
        height: 26px;
        line-height: 26px;
    }
    .footer .left ul li {
        width: 235px;
    }
    .footer .right ul li b {
        padding: 18px 8px;
        height: 135px;
        width: 32px;
        font-size: 14px;
    }
    .footer .right ul li .image {
        width: 135px;
        height: 135px;
    }
    .footer {
        padding: 36px 0 73px 0;
    }
}
@media only screen and (min-width: 1280px) and (max-width: 1365px) {
    .w {
        width: 974px;
    }
    .top .item .menu a {
        padding: 0 16px;
        font-size: 16px;
    }
    .search {
        width: 228px;
        margin: 6px 0 0 50px;
    }
    .top .item .logo {
        width: 160px;
    }
    .search {
        height: 28px;
    }
    .search input {
        height: 28px;
        font-size: 12px;
        margin-left: 10px;
    }
    .search input {
        width: 160px;
    }
    .search button {
        width: 60px;
        font-size: 12px;
        height: 32px;
        line-height: 32px;
    }
    .top .item .menu {
        margin-left: 40px;
        margin-top: 10px;
    }
    .top .item .exhi-ico a {
        width: 82px;
        height: 28px;
        line-height: 28px;
        font-size: 12px;
    }
    .top .item .exhi-ico a.guanzong {
        border: 1px solid #52a1f5;
    }
    .banner {
        height: 362px;
    }
    .banner .item .bot {
        bottom: 50px;
        font-size: 16px;
    }
    .banner .item .bot b {
        font-size: 30px;
        width: 50px;
        height: 44px;
        line-height: 44px;
        margin: 0 15px;
    }
    .nav ul li {
        height: 50px;
        line-height: 50px;
        width: 115px;
    }
    .nav a {
        font-size: 16px;
    }
    .nav li::after {
        height: 4px;
    }
    .nav li:hover::after {
        width: 58px;
    }
    .introduction {
        height: 382px;
    }
    .introduction .live {
        margin-right: 24px;
        width: 500px;
    }
    .introduction::after {
        height: 138px;
    }
    .introduction .main {
        top: 44px;
        height: 306px;
        padding: 13px;
    }
    .introduction .content b {
        margin-top: 20px;
        font-size: 20px;
        line-height: 25px;
        max-height: 50px;
    }
    .introduction .content .after {
        margin-top: 15px;
        height: 4px;
    }
    .introduction .content .after::after {
        height: 4px;
        width: 45px;
    }
    .introduction .content p {
        line-height: 20px;
        font-size: 12px;
        height: 160px;
        margin-top: 22px;
    }
    .introduction .live .image span {
        width: 58px;
        height: 58px;
    }
    .expo_title {
        height: 144px;
    }
    .expo_title b {
        margin-top: 32px;
        font-size: 42px;
    }
    .expo_title p {
        font-size: 16px;
    }
    .agenda-nav {
        height: 40px;
        line-height: 40px;
    }
    .agenda-nav a.focus {
        height: 50px;
        line-height: 50px;
        margin-top: -10px;
    }
    .agenda-nav a {
        font-size: 14px;
        padding: 0 20px;
    }
    .agenda-nav a.focus {
        padding: 0 30px;
    }
    .agenda-list {
        padding: 38px 18px 32px 18px;
    }
    .agenda-list p {
        font-size: 20px;
    }
    .agenda-list b {
        margin-top: 15px;
        font-size: 18px;
    }
    .agenda-list ul li {
        height: 33px;
        line-height: 33px;
        font-size: 12px;
    }
    .agenda-list ul li .left {
        width: 180px;
    }
    .agenda-list ul li .center {
        width: 420px;
    }
    .agenda-list ul li .right {
        width: 330px;
    }
    .agenda-list .btn {
        width: 152px;
        font-size: 20px;
        height: 45px;
        line-height: 45px;
        margin: 30px auto 0;
        font-size: 14px;
    }
    .guests ul li .item {
        height: 270px;
    }
    .guests ul li .item .text p span {
        height: 18px;
        line-height: 18px;
        font-size: 12px;
    }
    .guests ul li .item .text b {
        font-size: 18px;
    }
    .guests ul li .item .text {
        padding: 8px 12px 8px 12px;
    }
    .guests ul li .item .text p {
        margin-top: 8px;
        max-height: 18px;
        line-height: 18px;
    }
    .guests ul li .item .text:hover p {
        max-height: 60px;
        margin-top: 12px;
    }
    .guests ul {
        margin: -7px;
    }
    .guests ul li {
        padding: 7px;
    }

    .bright {
        margin-top: 36px;
        height: 500px;
    }
    .bright .right {
        margin-top: 80px;
    }
    .bright .expo_title {
        height: 90px;
    }
    .bright .expo_title b {
        margin-top: 15px;
    }
    .bright .left .bright-title-t {
        font-size: 18px;
    }
    .bright .bright-title-t span {
        font-size: 22px;
    }
    .bright .bright-title b {
        font-size: 50px;
    }
    .bright .bright-title-t {
        height: 50px;
        line-height: 50px;
        font-size: 18px;
    }
    .bright .bright-title {
        height: 85px;
    }
    .bright .item p {
        font-size: 12px;
        line-height: 20px;
        height: 40px;
        padding: 0 20px;
        margin-top: 10px;
    }
    .bright .left .item:last-child {
        margin-top: 20px;
    }
    .bright .right .item:last-child {
        margin-top: 20px;
    }
    .bright .expo_title p {
        margin-top: 10px;
    }

    .activities_title b {
        font-size: 42px;
    }
    .activities_title p {
        font-size: 16px;
    }
    .activities-nav a {
        font-size: 15px;
        padding: 18px 30px;
    }
    .activities-nav {
        margin: 10px 0 0 50px;
    }
    .activities {
        padding: 38px 0 40px 0;
    }
    .activities::after {
        height: 468px;
    }
    .activities-list .item {
        margin-top: 20px;
    }
    .activities-list {
        margin-top: 34px;
        padding: 0 18px 42px 18px;
    }
    .activities-list b {
        font-size: 18px;
        height: 30px;
        line-height: 30px;
    }
    .activities-list ul li {
        height: 34px;
        line-height: 34px;
        font-size: 12px;
    }
    .activities-list ul li.first {
        height: 38px;
        line-height: 38px;
        font-size: 12px;
    }
    .activities-list ul li .left {
        width: 180px;
    }
    .activities-list ul li .center {
        width: 355px;
    }
    .activities-list ul li .right {
        width: 300px;
    }
    .activities-list ul {
        margin-top: 15px;
    }
    .footer-title {
        font-size: 18px;
    }
    .footer .left {
        width: 662px;
    }
    .footer .left .btn {
        width: 84px;
        height: 26px;
        line-height: 26px;
        font-size: 12px;
    }
    .footer .left .btn i {
        margin-right: 4px;
        font-size: 12px;
    }
    .footer .left b i {
        font-size: 22px;
    }
    .footer .left b {
        margin-right: 10px;
        width: 32px;
        height: 32px;
    }
    .footer .left .text {
        font-size: 14px;
    }
    .footer .left .text p {
        height: 26px;
        line-height: 26px;
    }
    .footer .left ul li {
        width: 200px;
    }
    .footer .right ul li b {
        padding: 14px 10px;
        height: 115px;
        width: 32px;
        font-size: 12px;
    }
    .footer .right ul li .image {
        width: 114px;
        height: 115px;
    }
    .footer {
        padding: 30px 0 61px 0;
    }
}
@media only screen and  (max-width: 1279px) {
    .w {
        width: 836px;
    }
    .top .item .menu a {
        padding: 0 10px;
        font-size: 16px;
    }
    .search {
        width: 198px;
        margin: 6px 0 0 15px;
    }
    .top .item .logo {
        width: 160px;
    }
    .search {
        height: 28px;
    }
    .search input {
        height: 28px;
        font-size: 12px;
        margin-left: 10px;
    }
    .search input {
        width: 130px;
    }
    .search button {
        width: 60px;
        font-size: 12px;
        height: 32px;
        line-height: 32px;
    }
    .top .item .menu {
        margin-left: 20px;
        margin-top: 10px;
    }
    .top .item .exhi-ico a {
        width: 82px;
        height: 28px;
        line-height: 28px;
        font-size: 12px;
    }
    .top .item .exhi-ico a.guanzong {
        border: 1px solid #52a1f5;
    }
    .banner {
        height: 314px;
    }
    .banner .item .bot {
        bottom: 50px;
        font-size: 16px;
    }
    .banner .item .bot b {
        font-size: 30px;
        width: 50px;
        height: 44px;
        line-height: 44px;
        margin: 0 15px;
    }
    .nav ul li {
        height: 50px;
        line-height: 50px;
        width: 115px;
    }
    .nav a {
        font-size: 16px;
    }
    .nav li::after {
        height: 4px;
    }
    .nav li:hover::after {
        width: 58px;
    }
    .introduction {
        height: 382px;
    }
    .introduction .live {
        margin-right: 24px;
        width: 500px;
    }
    .introduction::after {
        height: 138px;
    }
    .introduction .main {
        top: 44px;
        height: 306px;
        padding: 13px;
    }
    .introduction .content b {
        margin-top: 20px;
        font-size: 20px;
        line-height: 25px;
        max-height: 50px;
    }
    .introduction .content .after {
        margin-top: 15px;
        height: 4px;
    }
    .introduction .content .after::after {
        height: 4px;
        width: 45px;
    }
    .introduction .content p {
        line-height: 20px;
        font-size: 12px;
        height: 160px;
        margin-top: 22px;
    }
    .introduction .live .image span {
        width: 58px;
        height: 58px;
    }
    .expo_title {
        height: 144px;
    }
    .expo_title b {
        margin-top: 32px;
        font-size: 42px;
    }
    .expo_title p {
        font-size: 16px;
    }
    .agenda-nav {
        height: 40px;
        line-height: 40px;
    }
    .agenda-nav a.focus {
        height: 50px;
        line-height: 50px;
        margin-top: -10px;
    }
    .agenda-nav a {
        font-size: 14px;
        padding: 0 15px;
    }
    .agenda-nav a.focus {
        padding: 0 25px;
    }
    .agenda-list {
        padding: 38px 18px 32px 18px;
    }
    .agenda-list p {
        font-size: 20px;
    }
    .agenda-list b {
        margin-top: 15px;
        font-size: 18px;
    }
    .agenda-list ul li {
        height: 33px;
        line-height: 33px;
        font-size: 12px;
    }
    .agenda-list ul li .left {
        width: 180px;
    }
    .agenda-list ul li .center {
        width: 380px;
    }
    .agenda-list ul li .right {
        width: 240px;
    }
    .agenda-list .btn {
        width: 152px;
        font-size: 20px;
        height: 45px;
        line-height: 45px;
        margin: 30px auto 0;
        font-size: 14px;
    }
    .guests ul li .item {
        height: 270px;
    }
    .guests ul li .item .text p span {
        height: 18px;
        line-height: 18px;
        font-size: 12px;
    }
    .guests ul li .item .text b {
        font-size: 18px;
    }
    .guests ul li .item .text {
        padding: 8px 12px 8px 12px;
    }
    .guests ul li .item .text p {
        margin-top: 8px;
        max-height: 18px;
        line-height: 18px;
    }
    .guests ul li .item .text:hover p {
        max-height: 60px;
        margin-top: 12px;
    }
    .guests ul {
        margin: -7px;
    }
    .guests ul li {
        padding: 7px;
    }

    .bright {
        margin-top: 36px;
        height: 500px;
    }
    .bright .right {
        margin-top: 80px;
    }
    .bright .expo_title {
        height: 90px;
    }
    .bright .expo_title b {
        margin-top: 15px;
    }
    .bright .left .bright-title-t {
        font-size: 18px;
    }
    .bright .bright-title-t span {
        font-size: 22px;
    }
    .bright .bright-title b {
        font-size: 50px;
    }
    .bright .bright-title-t {
        height: 50px;
        line-height: 50px;
        font-size: 18px;
    }
    .bright .bright-title {
        height: 85px;
    }
    .bright .item p {
        font-size: 12px;
        line-height: 20px;
        height: 40px;
        padding: 0 20px;
        margin-top: 10px;
    }
    .bright .left .item:last-child {
        margin-top: 20px;
    }
    .bright .right .item:last-child {
        margin-top: 20px;
    }
    .bright .expo_title p {
        margin-top: 10px;
    }

    .activities_title b {
        font-size: 42px;
    }
    .activities_title p {
        font-size: 16px;
    }
    .activities-nav a {
        font-size: 15px;
        padding: 18px 30px;
    }
    .activities-nav {
        margin: 10px 0 0 50px;
    }
    .activities {
        padding: 38px 0 40px 0;
    }
    .activities::after {
        height: 468px;
    }
    .activities-list .item {
        margin-top: 20px;
    }
    .activities-list {
        margin-top: 34px;
        padding: 0 18px 42px 18px;
    }
    .activities-list b {
        font-size: 18px;
        height: 30px;
        line-height: 30px;
    }
    .activities-list ul li {
        height: 34px;
        line-height: 34px;
        font-size: 12px;
    }
    .activities-list ul li.first {
        height: 38px;
        line-height: 38px;
        font-size: 12px;
    }
    .activities-list ul li .left {
        width: 180px;
    }
    .activities-list ul li .center {
        width: 355px;
    }
    .activities-list ul li .right {
        width: 300px;
    }
    .activities-list ul {
        margin-top: 15px;
    }
    .footer-title {
        font-size: 18px;
    }
    .footer .left {
        width: 530px;
    }
    .footer .left .btn {
        width: 84px;
        height: 26px;
        line-height: 26px;
        font-size: 12px;
    }
    .footer .left .btn i {
        margin-right: 4px;
        font-size: 12px;
    }
    .footer .left b i {
        font-size: 20px;
    }
    .footer .left b {
        margin-right: 5px;
        width: 32px;
        height: 32px;
    }
    .footer .left .text {
        font-size: 12px;
    }
    .footer .left .text p {
        height: 26px;
        line-height: 26px;
    }
    .footer .left ul li {
        width: 170px;
    }
    .footer .right ul li b {
        padding: 14px 10px;
        height: 115px;
        width: 32px;
        font-size: 12px;
    }
    .footer .right ul li .image {
        width: 114px;
        height: 115px;
    }
    .footer {
        padding: 30px 0 61px 0;
    }
}
@media only screen and  (max-width: 1399px){
    .left-float{
        display: none!important;
    }
}