/* ================================
   SABRAO 2026 会议网站 - 完整样式表
   整合新模板样式与原有功能样式
   ================================ */

:root {
--primary-color: #2e7d32;
--secondary-color: #ff9800;
--light-color: #f8f9fa;
--dark-color: #1b5e20;
--accent-color: #4caf50;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
}

body {
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* ================================
   导航栏样式
   ================================ */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-container a {
    text-decoration: none !important;
    border: none !important;
}

.logo-container a:hover,
.logo-container a:focus,
.logo-container a:active,
.logo-container a:visited {
    text-decoration: none !important;
    border: none !important;
}

.logo-image {
    height: 60px;
    width: auto;
    margin-right: 10px;
    object-fit: contain;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.logo-subtitle {
    font-size: 2rem;
    color: #666;
    font-weight: bold;
}

/* 导航菜单样式 */
.nav-links {
    display: flex;
    list-style: none;
}

.nav-links > li {
    margin-left: 1.5rem;
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    transition: all 0.3s;
    padding: 0.5rem 0;
    display: block;
}

.nav-links > li > a {
    font-weight: 700;
    font-size: 1rem;
    color: var(--primary-color);
    border-bottom: 2px solid transparent;
}

.nav-links > li > a:hover,
.nav-links > li > a.active {
    border-bottom-color: var(--secondary-color);
}

/* 二级菜单样式 */
.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 200px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    border-radius: 0 0 5px 5px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 100;
}

.nav-links > li:hover .sub-menu {
    opacity: 1;
    visibility: visible;
}

.sub-menu li {
    padding: 0.1rem 0.2rem;
    border-bottom: 1px solid #eee;
    margin-left: 2rem;
}

.sub-menu li:last-child {
    border-bottom: none;
}

.sub-menu a {
    color: var(--dark-color);
    font-weight: 500;
    text-transform: none;
}

.sub-menu a:hover {
    text-decoration: underline;
    font-weight: bold;
}

/* 语言切换按钮样式 */
.language-switcher {
    display: flex;
    margin-left: 2rem;
}

.lang-btn {
    padding: 0.5rem 0.8rem;
    background: none;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    min-width: 60px;
    text-align: center;
}

.lang-btn:first-child {
    border-radius: 4px 0 0 4px;
    border-right: none;
}

.lang-btn:last-child {
    border-radius: 0 4px 4px 0;
}

.lang-btn.active {
    background-color: var(--primary-color);
    color: white;
}

.lang-btn:not(.active):hover {
    background-color: rgba(46, 125, 50, 0.1);
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 2.4rem;
    line-height: 1;
    text-align: center;
    width: 1.5em;
    align-items: center;
    justify-content: center;
    align-self: center;
    margin-left: 1rem;
}

.hamburger.close {
    font-size: 2.4rem;
    line-height: 1;
}

/* ================================
   主横幅 (Hero Banner)
   ================================ */
.hero {
    background-color: transparent;
    position: relative;
    overflow: hidden;
}

/* Swiper轮播样式 */
.swiper-container {
    width: 100%;
}

.swiper-slide {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.swiper-slide img {
    width: 100%;
    height: auto;
    display: block;
}

.swiper-pagination {
    bottom: 20px;
}

/* ================================
   主要内容区域
   ================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin: 3rem 0;
    align-items: start;
}

@media (min-width: 769px) {
    .content-wrapper {
        grid-template-areas: "main sidebar";
    }
}

@media (max-width: 768px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        grid-template-areas: "main" "sidebar";
    }
}

.content-area {
    grid-area: main;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar {
    grid-area: sidebar;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    height: fit-content;
}

.sidebar-section {
    margin-bottom: 2rem;
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.content-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* 移动端侧边栏内容默认隐藏 */
.mobile-sidebar-content {
    display: none;
}

.section-title {
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

/* ================================
   按钮样式
   ================================ */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    justify-content: center;
    width: 100%;
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #e67e22;
}

.btn-primary {
    background-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #154360;
}

.btn-secondary {
    background-color: var(--accent-color);
}

.btn-secondary:hover {
    background-color: #239b56;
}

/* ================================
   关键日期
   ================================ */
.key-dates {
    margin-top: 0.1rem;
}

.date-item {
    padding: 0.2rem 0;
    border-bottom: 1px solid #eee;
}

.date-item:last-child {
    border-bottom: none;
}

.date-title {
    font-weight: 600;
    color: var(--primary-color);
}

/* ================================
   新闻列表样式
   ================================ */
.news-list ul {
    list-style: none;
}

.news-list li {
    display: flex;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
}

.news-list .date {
    min-width: 100px;
    color: var(--primary-color);
}

.news-list .text {
    flex: 1;
    padding-left: 1rem;
}

.news-list h4 {
    margin: 0;
}

.news-list a {
    color: var(--dark-color);
    text-decoration: none;
    transition: color 0.3s;
}

.news-list a:hover {
    text-decoration: underline;
    font-weight: bold;
}

/* ================================
   嘉宾展示样式
   ================================ */
/* 会议嘉宾 - 左右滚动 */
.guest-scroll-container {
    position: relative;
    margin-top: 1rem;
}

.guest-scroll-wrapper {
    display: flex;
    overflow-x: auto;
    gap: 1.5rem;
    padding: 1rem;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) #f0f0f0;
    width: 100%;
}

.guest-scroll-wrapper::-webkit-scrollbar {
    height: 8px;
}

.guest-scroll-wrapper::-webkit-scrollbar-track {
    background: #f0f0f0;
    border-radius: 4px;
}

.guest-scroll-wrapper::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.guest-scroll-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

.guest-item {
    flex: 0 0 auto;
    min-width: 180px;
    width: 180px;
    text-align: center;
    padding: 1rem;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: all 0.3s;
    background: white;
}

.guest-item:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}

.guest-img {
    display: block;
    margin-bottom: 0.5rem;
}

.guest-img img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--primary-color);
}

.guest-item h3 {
    margin: 0.5rem 0;
    font-size: 1rem;
}

.guest-item h3 a {
    color: var(--dark-color);
    text-decoration: none;
}

.guest-item h3 a:hover {
    text-decoration: underline;
    font-weight: bold;
}

.guest-item .position {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.guest-item .about {
    color: #666;
    font-size: 0.85rem;
    line-height: 1.4;
}

.guest-item .about a {
    color: #666;
    text-decoration: none;
}

/* ================================
   页脚样式
   ================================ */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 2rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.contact-info {
    line-height: 1.8;
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: #aaa;
}

.copyright a {
    color: #aaa;
    text-decoration: none;
}

/* ================================
   辅助类
   ================================ */
.highlight {
    background-color: #fff9e6;
    padding: 1.5rem;
    border-radius: 5px;
    margin: 1.5rem 0;
    border-left: 4px solid var(--secondary-color);
}

.content-card a {
    color: #1d1e1e;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 400;
}

.content-card a:hover {
    text-decoration: underline;
    font-weight: bold;
}

.content-card a img {
    transition: all 0.3s ease;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.content-card a:hover img {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.2);
    filter: brightness(1.05);
}

.text-center {
    text-align: center;
}

.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-2 { margin-bottom: 2rem; }

/* 下拉菜单指示器 */
.has-submenu > a::after {
    content: " \25BC";
    font-size: 0.7em;
    vertical-align: middle;
    margin-left: 5px;
}

@media (min-width: 769px) {
    .has-submenu > a::after {
        float: right;
        margin-top: 5px;
    }
}

/* ================================
   响应式设计
   ================================ */
@media (max-width: 768px) {
    /* 确保body和html全宽，无横向滚动 */
    body, html {
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
        margin: 0;
        padding: 0;
    }

    /* 导航栏全宽 */
    .navbar {
        width: 100%;
        max-width: 100%;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    /* 横幅全宽显示 */
    .hero, .swiper-container, .swiper-wrapper {
        width: 100%;
        max-width: 100%;
        margin-left: 0;
        margin-right: 0;
        padding-left: 0;
        padding-right: 0;
    }

    .swiper-slide {
        width: 100%;
        max-width: 100%;
        padding: 0;
        margin: 0;
    }

    .hero img, .swiper-slide img {
        width: 100%;
        max-width: 100%;
        height: auto;
        display: block;
        margin: 0;
        padding: 0;
    }

    /* 手机屏下全宽显示 */
    .container {
        padding-left: 0 !important;
        padding-right: 0 !important;
        max-width: 100%;
        width: 100%;
    }

    .content-wrapper {
        max-width: 100%;
        padding: 0;
    }

    /* logo 文字缩小 */
    .logo {
        font-size: 1.4rem;
    }

    .navbar {
        padding: 1rem;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: white;
        padding: 1rem;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        overflow-y: auto;
        height: calc(100vh - 70px);
        z-index: 1000;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links > li {
        margin: 0.1rem 0;
    }

    .nav-links > li > a {
        font-size: 0.9rem;
        padding: 0.2rem 0;
    }

    .has-submenu > a::after {
        float: right;
        margin-top: 5px;
    }

    .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        margin-top: 0.5rem;
        padding-left: 1rem;
    }

    .language-switcher {
        margin-left: 1rem;
    }

    .lang-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
        min-width: 50px;
    }

    .hamburger {
        display: block;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
        grid-template-areas: "main" "sidebar";
        gap: 1.5rem;
        padding: 0;
    }

    .content-area {
        gap: 1.5rem;
        display: flex;
        flex-direction: column;
        padding: 0;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        overflow: hidden;
    }

    /* 手机屏下也显示侧边栏内容 */
    .sidebar {
        display: block;
        margin-top: 0;
        padding: 0;
        width: 100%;
        max-width: 100%;
        background: transparent;
        box-shadow: none;
        border-radius: 0;
    }

    /* 侧边栏子元素与内容卡片对齐 */
    .sidebar-section {
        margin: 0 1rem 2rem 1rem;
        padding: 1rem;
        background: white;
        border-radius: 8px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        box-sizing: border-box;
        width: auto;
        max-width: calc(100% - 2rem);
    }

    .sidebar-section:last-child {
        margin-bottom: 0;
    }

    /* 显示移动端专用内容 */
    .mobile-sidebar-content {
        display: block;
    }

    .guest-scroll-wrapper {
        padding: 0.5rem 0;
    }

    .guest-item {
        min-width: 140px;
        width: 140px;
    }

    .button-group {
        flex-direction: column;
        gap: 0.5rem;
        margin: 1rem 0;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
        width: 100%;
        display: inline-block;
    }

    .content-card {
        margin: 0 1rem 1.5rem 1rem;
        padding: 1rem;
        width: auto;
        max-width: calc(100% - 2rem);
        box-sizing: border-box;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }

    .container, .navbar {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero {
        /* 高度由图片内容决定 */
    }

    .swiper-slide img {
        width: 100%;
        height: auto;
    }

    .content-card {
        padding: 1rem;
    }

    .guest-scroll-wrapper {
        padding: 0.5rem;
        gap: 1rem;
    }

    .guest-item {
        min-width: 150px;
        width: 150px;
        padding: 0.5rem;
    }

    .guest-img img {
        width: 80px;
        height: 80px;
    }

    .hero-subtitle {
        font-size: 0.8rem;
        display: none;
    }

    .button-group {
        gap: 0.4rem;
        margin: 0.5rem 0;
    }

    .btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
        width: auto;
        display: inline-block;
    }

    .content-card {
        padding: 1rem;
    }
}

/* ================================
   倒计时样式
   ================================ */
.data-time {
    position: absolute;
    z-index: 99;
    right: 0;
    top: 50%;
    background: rgba(255,255,255,0.3);
    padding: 20px 40px 20px 20px;
    margin-top: -80px;
}

.data-time p {
    font-size: 30px;
    margin: 0;
    line-height: 1;
    color: white;
}

.data-time .clock {
    font-size: 45px;
    font-weight: bold;
    line-height: 1;
    margin-top: 20px;
    color: white;
}

/* ================================
   原有兼容样式
   ================================ */
.header {
    height: 135px;
    position: fixed;
    width: 100%;
    background: #fff;
    top: 0px;
    border-bottom: 2px solid #ccc;
    z-index: 999;
}

.header h1 {
    margin: 18px 0 0 12px;
}

.header .language {
    margin-right: 25px;
}

.header .language a {
    color: #c1c1c1;
    line-height: 56px;
    margin-left: 20px;
}

.banner {
    width: 100%;
    overflow: hidden;
    padding-top: 135px;
}

.con01 {
    overflow: hidden;
    margin-top: 45px;
}

.con01Title {
    line-height: 40px;
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    padding-top: 40px;
    padding-bottom: 20px;
}

.con01-01 {
    margin: 0px 30px 0px;
    overflow: hidden;
    line-height: 35px;
    padding-bottom: 30px;
}

.footer {
    width: 100%;
    overflow: hidden;
}

.footerT {
    border-top: 1px solid #777c80;
    padding-bottom: 40px;
}

.footerB {
    height: 67px;
}

.footerBC {
    line-height: 67px;
    font-size: 13px;
    color: #fff;
}

.footerTC {
    overflow: hidden;
    margin-top: 34px;
}

.footerTC-01 {
    width: 280px;
    margin-right: 100px;
}

.footerTC-01 h3 {
    font-size: 15px;
    line-height: 40px;
    color: #fff;
}

.footerTC-01 p {
    line-height: 34px;
    color: #858585;
}

.email {
    line-height: 34px;
    color: #858585;
}

.wx {
    margin: 13px 165px 0 0;
}

.p_r {
    position: relative;
}

.header .language2 {
    display: none;
}

@media (min-width: 1200px) {
    .container {
        width: 1238px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media screen and (max-width: 1200px) {
    .w1130 {
        width: 900px;
    }
    .navWrap {
        width: 688px;
    }
    .header h1 {
        margin: 35px 0 0 12px;
    }
    .header h1 img {
        width: 200px;
    }
    .header .language2 {
        float: right;
        margin-right: 20px;
        font-size: 24px;
        margin-top: -55px;
    }
    .header .language2 a {
        color: #c1c1c1;
        line-height: 56px;
    }
    .navWrap {
        margin-top: -50px !important;
    }
    .nav li.nLi h3 a {
        padding: 0 16px;
    }
    .banner {
        width: 100%;
    }
    .con01-0301 {
        margin: 0px;
    }
    .con03CL {
        width: 450px;
    }
    .footerTC-01 {
        width: 33.3%;
        margin: 0;
    }
    .wx {
        width: 33.3%;
        margin: 0;
    }
    .data-time {
        padding: 20px 40px 20px 15px;
        margin-top: -70px;
    }
    .data-time p {
        font-size: 20px;
    }
    .data-time .clock {
        font-size: 38px;
        margin-top: 15px;
    }
}

@media screen and (max-width: 960px) {
    .con01-02 {
        height: auto !important;
    }
    .w1130 {
        width: auto;
        margin: 0 10px;
    }
    .con03CL {
        width: 100%;
    }
    .con03CL ul li a {
        width: 70%;
    }
    .footerTC-01 {
        width: 100%;
    }
    .wx {
        width: 100%;
        margin: 15px 0;
    }
    .footerT {
        height: auto;
    }
    .header_a {
        display: block !important;
    }
    .header {
        display: none;
    }
    .con01-02 a {
        margin-top: 20px;
    }
    .banner {
        width: 100%;
        padding-top: 45px !important;
    }
    .con01-01 img {
        max-width: 100%;
        height: auto;
    }
    .con01-01 table {
        width: 100%;
        max-width: 100%;
    }
    .data-time {
        display: none;
    }
}

.header_a a {
    display: block;
}

.header_a {
    display: none;
    width: 100%;
    height: 45px;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    background: #fff;
    background-size: 100% 100%;
}

.header_a .logo {
    display: block;
    width: auto;
    height: 45px;
    margin: 0 auto;
}

.menu_btn {
    display: block;
    width: 45px;
    height: 33px;
    position: absolute;
    left: 10px;
    bottom: 0;
}

/* 弹出层 */
#popup {
    width: 100%;
    height: 80%;
    background: white;
    position: fixed;
    z-index: 15;
    top: 0;
    left: 0;
    display: none;
    transition: all 1s ease 0s;
    -webkit-transition: all 1s ease 0s;
    -moz-transition: all 1s ease 0s;
    -o-transition: all 1s ease 0s;
    -ms-transition: all 1s ease 0s;
}

.navbut {
    width: 45px;
    height: 33px;
    position: absolute;
    z-index: 20;
}

#popup .popup-top {
    width: 100%;
    height: 16%;
    border-bottom: 1px solid #cccccc;
}

#popup .popup-top>p {
    color: #003677;
    padding: 0px 7%;
    font-size: 22px;
    padding-top: 2%;
}

#popup ul {
    width: 100%;
    height: 90%;
    padding-top: 50px;
    overflow: hidden;
    background: white;
}

#popup ul li {
    width: 100%;
    height: auto;
    background: white;
    cursor: pointer;
}

#popup ul li p {
    width: 84%;
    height: 50px;
    line-height: 50px;
    padding: 0px 7%;
    font-size: 20px;
    color: black;
    border-bottom: 1px solid #cccccc;
    position: relative;
}

#popup ul li p>a {
    font-size: 20px;
    color: black;
}

#popup ul li p .xjt {
    display: block;
    width: 13px;
    height: 13px;
    position: absolute;
    right: 5%;
    top: 37%;
    transform: scale(0.7, 0.7);
    transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -webkit-transform-origin: center;
    -o-transform-origin: center;
    -moz-transform-origin: center;
    -ms-transform-origin: center;
}

#popup ul li p .xjttr {
    transform: rotate(-180deg);
    -webkit-transform: rotate(-180deg);
    -o-transform: rotate(-180deg);
    -moz-transform: rotate(-180deg);
    -ms-transform: rotate(-180deg);
    transform-origin: center;
    -webkit-transform-origin: center;
    -o-transform-origin: center;
    -moz-transform-origin: center;
    -ms-transform-origin: center;
}

#popup ul .popuplast {
    border: 0;
}

#popup ul li .pup-hide {
    width: 100%;
    height: auto;
    overflow: hidden;
    display: none;
}

#popup ul li .pup-hide a {
    width: 76%;
    height: 50px;
    line-height: 50px;
    display: block;
    padding: 0px 12%;
    border-bottom: 1px solid #cccccc;
    background: #f5f5f5;
    font-size: 20px;
    color: #4d4d4d;
}

/* 导航 */
.navbut {
    display: inline-block;
    transform: scale(0.7, 0.7);
}

.navbut>div {
    display: inline-block;
    width: 35px;
    height: 5px;
    border-radius: 1px;
    float: left;
    background: #5b5b5b;
    margin-bottom: 5px;
    transform: rotate(0deg);
    transition: all 0.6s ease 0s;
    -webkit-transform: rotate(0deg);
    -webkit-transition: all 0.6s ease 0s;
    -moz-transition: all 0.6s ease 0s;
    -o-transform: rotate(0deg);
    -o-transition: all 0.6s ease 0s;
    -ms-transform: rotate(0deg);
    -ms-transition: all 0.6s ease 0s;
}

.navbut .bianone {
    position: absolute;
    top: 11px;
    transform: rotate(-45deg);
    transition: all 0.6s ease 0s;
    -webkit-transform: rotate(-45deg);
    -webkit-transition: all 0.6s ease 0s;
    -moz-transform: rotate(-45deg);
    -moz-transition: all 0.6s ease 0s;
    -o-transform: rotate(-45deg);
    -o-transition: all 0.6s ease 0s;
    -ms-transform: rotate(-45deg);
    -ms-transition: all 0.6s ease 0s;
    background: #7d8291;
}

.navbut .biantwo {
    display: none;
    transition: all 0.6s ease 0s;
    -webkit-transition: all 0.6s ease 0s;
    -moz-transition: all 0.6s ease 0s;
    -o-transition: all 0.6s ease 0s;
    -ms-transition: all 0.6s ease 0s;
    background: #7d8291;
}

.navbut .bianthree {
    position: absolute;
    bottom: 11px;
    transform: rotate(45deg);
    transition: all 0.6s ease 0s;
    background: #7d8291;
    -webkit-transform: rotate(45deg);
    -webkit-transition: all 0.6s ease 0s;
    -moz-transform: rotate(45deg);
    -moz-transition: all 0.6s ease 0s;
    -o-transform: rotate(45deg);
    -o-transition: all 0.6s ease 0s;
    -ms-transform: rotate(45deg);
    -ms-transition: all 0.6s ease 0s;
}