/* ============================================ */
/* main.css - 合并后的全站核心样式              */
/* ============================================ */

/* ===== 1. 基础重置 ===== */

/* HTML5 显示角色重置 */
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; }

html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    line-height: 150%;
    width: 100%;
    font-size: 14px;
    margin: 0;
    padding: 0;
    font-family: "微软雅黑", "Helvetica", STHeiTi, sans-serif;
    background: #fafafa;
}

a {
    text-decoration: none !important;
    color: #000;
}
a:focus, a:hover { color: #1AA1FF; }

ol, ul { list-style: none; }

blockquote, q { quotes: none; }
blockquote:before, blockquote:after, q:before, q:after { content: ''; content: none; }

*:focus { outline: none; }

table { border-collapse: collapse; border-spacing: 0; }

img { border: 0; }
svg:not(:root) { overflow: hidden; }

/* ===== 2. 工具类 ===== */

/* 清除浮动 */
.clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
}
.clear { clear: both; }

/* 浮动 */
.fr { float: right !important; }
.fl { float: left !important; }

/* 定位 */
.relative { position: relative; }

/* 宽/高 */
.WW100 { width: 100% !important; }
.H50 { height: 50px; line-height: 50px !important; }
.H60 { height: 60px; line-height: 60px !important; }
.H80 { height: 80px; line-height: 80px; }

/* 显示/隐藏 */
.hide { display: none !important; }
.Hidden { overflow: hidden; }
.Yauto { overflow-y: auto; }

/* 布局辅助 */
.Mcenter {
    width: 100%;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-box-pack: center;
    -webkit-box-align: center;
    text-align: center;
}

/* 背景颜色 */
.bgff { background: #fff; }
.bg00 { background: #000; }
.bg_f3 { background: #f3f3f3; }

/* 文字颜色 */
.color_ff { color: #fff !important; }
.color_33 { color: #333 !important; }
.color_66 { color: #666 !important; }
.color_99 { color: #999 !important; }
.color_red { color: red !important; }
.color_orange { color: orange !important; }
.color_cyan { color: #0099ff !important; }

/* 字体大小 */
.font14 { font-size: 14px !important; }
.font16 { font-size: 16px !important; }
.font18 { font-size: 18px !important; }
.font20 { font-size: 20px !important; }
.font24 { font-size: 24px !important; }
.font28 { font-size: 28px !important; }

/* 文字对齐 */
.center { text-align: center; }
.text-l { text-align: left; }
.text-r { text-align: right; }

/* 边框 */
.noborder { border: none !important; }
.radius4 { border-radius: 4px !important; }

/* Margin */
.mt-0 { margin-top: 0px !important; }
.mt-5 { margin-top: 5px; }
.mt-10 { margin-top: 10px; }
.mt-15 { margin-top: 15px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px !important; }
.mt-50 { margin-top: 50px !important; }
.mb-0 { margin-bottom: 0px !important; }
.mb-10 { margin-bottom: 10px !important; }
.mb-20 { margin-bottom: 20px !important; }
.mb-30 { margin-bottom: 30px; }
.mb-50 { margin-bottom: 50px; }
.ml-10 { margin-left: 10px; }
.ml-20 { margin-left: 20px; }
.mr-10 { margin-right: 10px; }
.mr-20 { margin-right: 20px; }

/* Padding */
.plr20 { padding-left: 20px; padding-right: 20px; }
.pt-10 { padding-top: 10px; }
.pt-20 { padding-top: 20px; }
.pt-30 { padding-top: 30px; }
.pt-40 { padding-top: 40px; }
.pt-50 { padding-top: 50px; }
.pb-10 { padding-bottom: 10px; }
.pb-20 { padding-bottom: 20px; }
.pb-30 { padding-bottom: 30px; }
.pb-40 { padding-bottom: 40px; }
.pl-20 { padding-left: 20px !important; }
.pr-20 { padding-right: 20px !important; }

/* ===== 3. 按钮 ===== */

.btn {
    display: inline-block;
    box-sizing: border-box;
    cursor: pointer;
    text-align: center;
    font-weight: 400;
    white-space: nowrap;
    vertical-align: middle;
    border: solid 1px #ddd;
    -webkit-transition: background-color .1s linear;
    -moz-transition: background-color .1s linear;
    -o-transition: background-color .1s linear;
    transition: background-color .1s linear;
}

.btn-primary {
    color: #fff;
    background-color: #5a98de;
    border-color: #5a98de;
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active, .btn-primary.active {
    color: #fff;
    background-color: #2773BE;
    border-color: #2773BE;
}

.btn-success {
    color: #fff;
    background-color: #5eb95e;
    border-color: #5eb95e;
}
.btn-success:hover, .btn-success:focus, .btn-success:active, .btn-success.active {
    color: #fff;
    background-color: #429842;
    border-color: #429842;
}

/* ===== 4. Banner 样式 (原 optimized.css) ===== */

.bannerbox {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.Homebanner {
    width: 100%;
    position: relative;
    height: 600px;
    overflow: hidden;
}
.Homebanner ul {
    width: 100%;
    position: absolute;
    height: 600px;
}
.Homebanner ul li {
    width: 100%;
    height: 600px;
    position: absolute;
    overflow: hidden;
}
.Homebanner ul li img {
    width: 1900px;
    position: absolute;
    left: 50%;
    top: 0px;
    display: block;
    margin-left: -950px;
}

.Homeleft, .Homeright {
    background: #000;
    font-family: "宋体";
    width: 50px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 40px;
    color: #fff;
    position: absolute;
    top: 45%;
    cursor: pointer;
    transition: all .2s ease;
    opacity: 0;
    z-index: 899999;
}
.Homeleft { left: -60px; }
.Homeright { right: -60px; }
.bannerbox:hover .Homeleft { left: 0px; opacity: 1; }
.bannerbox:hover .Homeright { right: 0px; opacity: 1; }

.Homedot {
    position: absolute;
    width: 100%;
    text-align: center;
    z-index: 999;
    bottom: 60px;
}
.Homedot a {
    display: inline-block;
    margin: 0px 5px;
    height: 12px;
    width: 12px;
    line-height: 1000px;
    overflow: hidden;
    background: url(../img/index_229.png) no-repeat;
}
.Homedot a.cur {
    background: url(../img/index_228.png) no-repeat;
}

.Homebannertext {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
}
.Homebannertext img.bigimg {
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}

/* Banner 1 - 红色区块 */
.Homebannertext dl.bannerone {
    position: absolute;
    width: 1180px;
    left: 50%;
    margin-left: -590px;
    top: 251px;
    text-align: center;
    z-index: 9999;
}
.Homebannertext dl.bannerone dt {
    float: right;
    font-size: 45px;
    width: 750px;
    height: 80px;
    margin-left: 100px;
    line-height: 75px;
    color: #fff;
    background: #eb3900;
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}
.Homebannertext dl.bannerone dd {
    float: right;
    font-size: 29px;
    color: #fff;
    background: #000;
    width: 360px;
    height: 60px;
    line-height: 60px;
    margin-right: 45px;
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}

/* Banner 2 - 黑色文字 */
.Homebannertext dl.bannertwo {
    position: absolute;
    width: 1180px;
    left: 50%;
    top: 0px;
    color: #fff;
    margin-left: -590px;
    z-index: 9999;
}
.Homebannertext dl.bannertwo dt {
    padding-top: 110px;
    position: relative;
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}
.Homebannertext dl.bannertwo dt h3 {
    font-size: 50px;
    line-height: 60px;
    font-weight: 700;
    position: relative;
}
.Homebannertext dl.bannertwo dt p {
    font-size: 20px;
    position: relative;
    padding-top: 20px;
}
.Homebannertext dl.bannertwo img {
    display: block;
    position: relative;
    width: auto;
    height: auto;
    left: 50px;
    margin: 0px;
    top: 50px;
}

/* Banner 3 - 左图右文 */
.Homebannertext dl.bannerthree {
    position: absolute;
    width: 1220px;
    left: 50%;
    margin-left: -610px;
    top: 0px;
}
.Homebannertext dl.bannerthree dt {
    float: left;
    position: relative;
    transform: translateX(100px);
    -moz-transform: translateX(100px);
    -ms-transform: translateX(100px);
    -o-transform: translateX(100px);
    -webkit-transform: translateX(100px);
}
.Homebannertext dl.bannerthree img {
    display: block;
    position: relative;
    width: auto;
    height: auto;
    left: 0px;
    margin: 0px;
    top: 0px;
}
.Homebannertext dl.bannerthree dd {
    width: 500px;
    float: left;
    color: #fff;
    padding-top: 170px;
    position: relative;
    padding-left: 25px;
    transform: translateX(100px);
    -moz-transform: translateX(100px);
    -ms-transform: translateX(100px);
    -o-transform: translateX(100px);
    -webkit-transform: translateX(100px);
}
.Homebannertext dl.bannerthree dd h3 {
    font-size: 55px;
    font-weight: 700;
    line-height: 70px;
}
.Homebannertext dl.bannerthree dd p {
    font-size: 20px;
    line-height: 30px;
}

/* 动画效果类 */
.bannereffect {
    opacity: 0;
    filter: alpha(opacity=0);
}
.bannertime {
    transition: all .8s ease-in-out;
    -moz-transition: all .8s ease-in-out;
    -ms-transition: all .8s ease-in-out;
    -o-transition: all .8s ease-in-out;
    -webkit-transition: all .8s ease-in-out;
}
.bannertime1 {
    transition: all .8s ease-in-out .2s;
    -moz-transition: all .8s ease-in-out .2s;
    -ms-transition: all .8s ease-in-out .2s;
    -o-transition: all .8s ease-in-out .2s;
    -webkit-transition: all .8s ease-in-out .2s;
}
.bannertime2 {
    transition: all 1s ease-in-out .2s;
    -moz-transition: all 1s ease-in-out .2s;
    -ms-transition: all 1s ease-in-out .2s;
    -o-transition: all 1s ease-in-out 2s;
    -webkit-transition: all 1s ease-in-out .2s;
}

/* 进入动画 */
.Homebanner li.cur .Homebannertext img.bigimg {
    transform: translateY(0px);
    -moz-transform: translateY(0px);
    -ms-transform: translateY(0px);
    -o-transform: translateY(0px);
    -webkit-transform: translateY(0px);
}
.Homebanner li.cur .Homebannertext dl.bannerone dt {
    transform: translateY(0px);
    -moz-transform: translateY(0px);
    -ms-transform: translateY(0px);
    -o-transform: translateY(0px);
    -webkit-transform: translateY(0px);
}
.Homebanner li.cur .Homebannertext dl.bannerone dd {
    transform: translateY(0px);
    -moz-transform: translateY(0px);
    -ms-transform: translateY(0px);
    -o-transform: translateY(0px);
    -webkit-transform: translateY(0px);
}
.Homebanner li.cur .Homebannertext dl.bannertwo dt {
    transform: translateY(0px);
    -moz-transform: translateY(0px);
    -ms-transform: translateY(0px);
    -o-transform: translateY(0px);
    -webkit-transform: translateY(0px);
}
.Homebanner li.cur .Homebannertext dl.bannerthree dt {
    transform: translateX(0px);
    -moz-transform: translateX(0px);
    -ms-transform: translateX(0px);
    -o-transform: translateX(0px);
    -webkit-transform: translateX(0px);
}
.Homebanner li.cur .Homebannertext dl.bannerthree dd {
    transform: translateX(0px);
    -moz-transform: translateX(0px);
    -ms-transform: translateX(0px);
    -o-transform: translateX(0px);
    -webkit-transform: translateX(0px);
}
.Homebanner li.cur .bannereffect {
    opacity: 1;
    filter: alpha(opacity=100);
}

/* 退出动画 */
.Homebanner li.cur1 .bannertime {
    transition: all .4s linear .2s;
    -moz-transition: all .4s linear .2s;
    -ms-transition: all .4s linear .2s;
    -o-transition: all .4s linear .2s;
    -webkit-transition: all .4s linear .2s;
}
.Homebanner li.cur1 .bannertime1 {
    transition: all .4s linear .1s;
    -moz-transition: all .4s linear .1s;
    -ms-transition: all .4s linear .1s;
    -o-transition: all .4s linear .1s;
    -webkit-transition: all .4s linear .1s;
}
.Homebanner li.cur1 .bannertime2 {
    transition: all .4s linear;
    -moz-transition: all .4s linear;
    -ms-transition: all .4s linear;
    -o-transition: all .4s linear;
    -webkit-transition: all .4s linear;
}
.Homebanner li.cur1 .Homebannertext img.bigimg {
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}
.Homebanner li.cur1 .Homebannertext dl.bannerone dt {
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}
.Homebanner li.cur1 .Homebannertext dl.bannerone dd {
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}
.Homebanner li.cur1 .Homebannertext dl.bannertwo dt {
    transform: translateY(100px);
    -moz-transform: translateY(100px);
    -ms-transform: translateY(100px);
    -o-transform: translateY(100px);
    -webkit-transform: translateY(100px);
}
.Homebanner li.cur1 .Homebannertext dl.bannerthree dt {
    transform: translateX(100px);
    -moz-transform: translateX(100px);
    -ms-transform: translateX(100px);
    -o-transform: translateX(100px);
    -webkit-transform: translateX(100px);
}
.Homebanner li.cur1 .Homebannertext dl.bannerthree dd {
    transform: translateX(100px);
    -moz-transform: translateX(100px);
    -ms-transform: translateX(100px);
    -o-transform: translateX(100px);
    -webkit-transform: translateX(100px);
}
.Homebanner li.cur1 .bannereffect {
    opacity: 0;
    filter: alpha(opacity=0);
}

/* 首页底部按钮区域 (原 optimized.css) */
.index_btn {
    width: 100%;
    position: absolute;
    height: 40px;
    top: 560px;
    z-index: 9999;
    background: #191919;
}
.index_btn ul {
    margin: 0px auto;
    padding: 0px;
    width: 1180px;
}
.index_btn ul li {
    float: left;
    width: 295px;
    height: 40px;
    position: relative;
}
.index_btn ul li span {
    position: relative;
    z-index: 999;
    width: 294px;
    display: block;
    height: 40px;
}
.index_btn ul li span a {
    display: block;
    width: 294px;
    color: #FFF;
    background: #191919;
    cursor: pointer;
    font-size: 14px;
    text-align: center;
    line-height: 40px;
    border-right: 1px solid #a7a7a7;
    float: left;
    height: 40px;
}
.index_btn ul li span a:hover {
    color: #FFF;
    background: #e60012;
}
.index_btn ul li span a.cur {
    border: none;
    width: 295px;
}
.index_btn ul li em {
    display: inline-block;
    height: 40px;
    padding-left: 30px;
}
.index_btn ul li em.btn { background: url(../img/btn1.png) no-repeat left center; }
.index_btn ul li em.btn1 { background: url(../img/btn3.png) no-repeat left center; }
.index_btn ul li em.btn2 { background: url(../img/btn4.png) no-repeat left center; }
.index_btn ul li em.btn3 { background: url(../img/btn2.png) no-repeat left center; }

.index_btnbox {
    width: 295px;
    height: 260px;
    background: #FFF;
    position: absolute;
    top: 0px;
    left: 0px;
    padding: 20px 0px 0px 0px;
}
.index_btnbox img { display: block; margin: auto; }
.index_btnbox p {
    margin: 0px;
    padding: 20px 0px 0px 19px;
}
.index_btnbox p a {
    display: block;
    float: left;
    width: 130px;
    padding-bottom: 5px;
    line-height: 24px;
}

/* ===== 5. 页面级通用样式 (从各 HTML 中提取) ===== */

/* Hero 样式 (用于所有 page header) */
.consulting-hero,
.tutorial-hero,
.service-hero {
    padding-top: 72px;
    width: 100%;
    background: #362A5B;
    color: #ffffff;
    padding: 100px 20px 60px 20px;
    text-align: center;
}
@media (max-width: 768px) {
    .consulting-hero,
    .tutorial-hero,
    .service-hero {
        padding-top: 60px;
        padding-bottom: 40px;
    }
}
.consulting-hero h1,
.tutorial-hero h1,
.service-hero h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.consulting-hero p,
.tutorial-hero p,
.service-hero p {
    font-size: 18px;
    opacity: 0.85;
    max-width: 700px;
    margin: 0 auto;
}
.service-hero h1 { font-size: 40px; }
.service-hero .cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}
.service-hero .cta-btn-primary {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    font-size: 15px;
    background-color: #2E74E2;
    color: #fff;
    transition: all 0.3s ease;
}
.service-hero .cta-btn-primary:hover {
    background-color: #1A5CC7;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 116, 226, 0.3);
}
.service-hero .cta-btn-outline {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    font-size: 15px;
    background-color: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.4);
    transition: all 0.3s ease;
}
.service-hero .cta-btn-outline:hover {
    background-color: rgba(255,255,255,0.1);
    border-color: #fff;
    transform: translateY(-2px);
}

/* 内容卡片样式 */
.step-card {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid #F1F5F9;
    transition: all 0.2s ease;
}
.step-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}
.step-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: #0B1A33;
    margin-bottom: 15px;
    border-left: 4px solid #2E74E2;
    padding-left: 15px;
}
.step-card h3 .step-num {
    color: #2E74E2;
    margin-right: 8px;
}
.step-card p {
    font-size: 15px;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 10px;
}
.step-card img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid #E2E8F0;
    margin-top: 15px;
    display: block;
}

/* 双栏布局样式 */
.main-grid-wrapper {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-top: -30px;
    position: relative;
    z-index: 10;
}
.sticky-nav {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    position: sticky;
    top: 100px;
    height: fit-content;
    background: #ffffff;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #E2E8F0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.sticky-nav h4 {
    font-size: 14px;
    font-weight: 600;
    color: #64748B;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 5px 0;
}
.sticky-nav a {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    color: #475569;
    transition: all 0.2s ease;
}
.sticky-nav a:hover {
    color: #2E74E2;
    background: #F8FAFC;
}
.sticky-nav a.active {
    background: #EFF6FF;
    color: #2E74E2;
}
.content-area {
    flex: 3;
    min-width: 280px;
}

/* ===== 6. 首页 Hero 轮播 (index.html) ===== */

.hero-carousel-wrapper {
    padding-top: 72px;
    position: relative;
    width: 100%;
    height: 620px;
    overflow: hidden;
    background: #F2F0F9;
    display: block;
}
@media (max-width: 768px) {
    .hero-carousel-wrapper {
        padding-top: 60px;
        height: 350px;
    }
}
.hero-slides {
    position: relative;
    width: 100%;
    height: 100%;
}
.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    opacity: 0;
    z-index: 1;
    animation: heroFade 24s infinite;
}
.hero-slide:nth-child(1) { animation-delay: 0s; }
.hero-slide:nth-child(2) { animation-delay: 6s; }
.hero-slide:nth-child(3) { animation-delay: 12s; }
.hero-slide:nth-child(4) { animation-delay: 18s; }

@keyframes heroFade {
    0%   { opacity: 0; }
    4%   { opacity: 1; }
    20%  { opacity: 1; }
    25%  { opacity: 0; }
    100% { opacity: 0; }
}

.hero-content-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 3;
    display: flex;
    justify-content: center;
    padding-bottom: 50px;
}
@media (max-width: 768px) {
    .hero-content-overlay { padding-bottom: 25px; }
}
.hero-content-inner {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}
.hero-btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.hero-btn-primary {
    background-color: #2E74E2;
    color: #fff;
}
.hero-btn-primary:hover {
    background-color: #1A5CC7;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 116, 226, 0.3);
}
.hero-btn-outline {
    background-color: rgba(255,255,255,0.9);
    color: #0B1A33;
    border: 1px solid rgba(0,0,0,0.05);
}
.hero-btn-outline:hover {
    background-color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
    .hero-btn {
        display: inline-block;
        width: 48%;
        margin: 0;
        font-size: 13px;
        padding: 12px 0;
        text-align: center;
    }
    .hero-content-inner {
        display: flex;
        flex-direction: row;
        justify-content: center;
        gap: 4%;
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
}

/* 地图动画 */
@keyframes mapPulse {
    0%   { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.3); }
    50%  { box-shadow: 0 0 0 20px rgba(37, 99, 235, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

/* ===== 7. 响应式 (原 main.css 响应式) ===== */

@media (min-width: 751px) and (max-width: 992px) {
    /* 原 ProJoin 相关样式已删除，因为页面未使用 */
}

@media only screen and (max-width: 750px) {
    /* 原响应式样式中的 .ItvBg_box, .IproList_bg 等已删除，因为页面未使用 */
    
    .pubBan_box { width: 100%; overflow: hidden; }
    .pubBan_width { width: 140%; margin: 0 -25%; }
    
    /* 双栏布局移动端适配 */
    .main-grid-wrapper { flex-direction: column; gap: 20px; }
    .sticky-nav {
        position: static;
        max-width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 15px;
        top: auto;
        gap: 5px;
    }
    .sticky-nav a { padding: 6px 12px; font-size: 12px; }
}

/* ============================================ */
/* ===== 8. 【新增】纯CSS替代jQuery动画 ===== */
/* ============================================ */

/**
 * 说明：以下样式用于替代原来由 jQuery 实现的悬停动画
 * 原代码在 index.html 中：
 *   $(".index_btn li").hover(function(){
 *       $(this).find("div").stop(true).animate({top:-280},300);
 *   },function(){
 *       $(this).find("div").stop(true).animate({top:-0},300);
 *   });
 * 
 * 现在由 CSS transition 实现，性能更好且无需加载额外 JS
 * 所有 HTML 完全不动，SEO 不受影响
 */

/* 8.1 首页底部按钮 - 悬停弹出效果 */
.index_btn li {
    /* 确保 li 作为定位容器，overflow 可见 */
    overflow: visible;
    z-index: 1;
}

/* 悬停时提升层级，避免被其他元素遮挡 */
.index_btn li:hover {
    z-index: 9999;
}

/* 弹出面板的动画容器 */
.index_btn li div.index_btnbox {
    /* 初始位置：在按钮下方（top:0 是相对于 li 的顶部） */
    transform: translateY(0);
    /* 添加平滑过渡动画 */
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    /* 确保在上层显示 */
    z-index: 9998;
    /* 设置定位上下文，配合 transform 使用 */
    position: absolute;
    top: 0;
    left: 0;
}

/* 悬停时弹出面板向上滑出 (向上移动 280px，即面板自身高度) */
.index_btn li:hover div.index_btnbox {
    transform: translateY(-280px);
}

/**
 * 8.2 针对 .index_btn li 的另一种写法
 * 如果页面中 .index_btn li div 使用了 .index_btnbox 类
 * 上面已经覆盖了 .index_btnbox
 * 如果使用的是其他 div，可以添加通用规则
 */
.index_btn li > div {
    transform: translateY(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    top: 0;
    left: 0;
    z-index: 9998;
}
.index_btn li:hover > div {
    transform: translateY(-280px);
}

/* 8.3 如果页面中还有其他使用 .stop().animate() 的地方，可以在此补充 */
/* 例如，如果其他页面也有类似的悬停动画，可以添加通用规则 */

/* ============================================ */
/* 废弃/未使用样式说明 (已删除)                  */
/* ============================================ */
/* 
已删除的样式：
- .ItvBg_box, .ItvBg_vedio, .ItvBg_txt
- .IproList_bg, .IproList_box, .IproList_cont, .IproList_iconBox, .IproList_icon, .IproList_txt
- .aboutUs_box, .aboutUs_titl, .aboutUs_list, .aboutUs_img, .aboutUs_info, .aboutUs_tel
- .ILbestNews_box, .ILbestNews_titl, .IswideImg_box, .swipe, .ILbestNews_cont
- .ProInfo_box, .ProTitl_box, .ProInfo_img, .ProJoin_box, .ProJoin_titl, .ProJoin_caseBox, .ProJoin_caseList, .ProJoin_caseCont, .ProJoin_work, .ProSip_table
- 以及所有相关的响应式样式
*/