/* =========全局重置 清爽官网字体========= */
*{
    margin:0;
    padding:0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
}
ul,li{list-style:none;}
a{text-decoration:none;color:inherit;transition: 0.2s;}
a:hover{color:#dc2626;}
body{
    background-color:#ffffff;
    color:#333;
    line-height:1.8;
    font-size:16px;
}
/* =========顶部导航========= */
.page-header{
    width:100%;
    background:#ffffff;
    border-bottom:1px solid #f1f5f9;
}
.header-container{
    width:1200px;
    margin:0 auto;
    height:60px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}
.header-logo{
    font-size:18px;
    font-weight:700;
    color:#22c55e;
    letter-spacing:0.5px;
}
.top-nav{
    display:flex;
    gap:24px;
    font-size:15px;
}
.nav-item{
    position:relative;
    color:#4b5563;
    font-weight:500;
}
.nav-tag{
    position:absolute;
    top:-10px;
    right:-12px;
    background:#ef4444;
    color:#fff;
    font-size:10px;
    border-radius:12px;
    padding:2px 5px;
}

/* =========Banner 板块【文字自动切换】========= */
.banner-wrap{
    width:100%;
    padding:50px 0;
    /* 背景变量，可直接修改颜色 */
    --bg-color1:#fff;
    --bg-color2:#ffffff;
    background-image: url("../images/bg.png");
    background-size: cover;
    background-position:center;
    position:relative;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    overflow:hidden;
}
/* 半透明遮罩，方便改色调，不想要渐变就把background改为rgba(255,255,255,0.85) */
.banner-wrap::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, var(--bg-color1) 0%, var(--bg-color2) 100%);
    opacity:0.86;
    z-index:1;
}
.banner-inner{
    position:relative;
    z-index:2;
    text-align:center;
    padding:0 20px;
}
/* 限时优惠角标 */
.banner-badge{
    position:absolute;
    top:-8px;
    right:calc(50% - 380px);
    background:linear-gradient(90deg,#ff4422,#ff9500);
    color:#fff;
    font-size:14px;
    font-weight:bold;
    padding:4px 12px;
    border-radius:20px;
    z-index:10;
    box-shadow:0 2px 8px rgba(255,68,34,0.3);
}
/* 顶部大标题 */
.banner-top-title{
    font-size:54px;
    font-weight:700;
    color:#111827;
    margin-bottom:16px;
    position:relative;
}
/* 轮播文字容器 */
.banner-art-text{
    position:relative;
    margin-left:-12px;
    padding:2px 8px;
    min-width:120px;
    text-align:center;
    display:inline-block;
    opacity:1;
    transition:opacity 0.4s ease, color 0.4s ease;
    color:#22c55e;
    font-weight:700;
}
.banner-subtitle{
    color:#6b7280;
    font-size:16px;
    max-width:840px;
    margin:0 auto 36px;
    line-height:1.8;
}
.banner-buttons{
    display:flex;
    gap:18px;
    justify-content:center;
}
.banner-btn{
    display:inline-block;
    width:140px;
    height:48px;
    line-height:48px;
    text-align:center;
    border-radius:6px;
    font-size:16px;
    font-weight:600;
    text-decoration:none;
    transition:0.22s;
}
.banner-btn.green{
    background:#22c55e;
    color:#ffffff;
}
.banner-btn.green:hover{
    background:#16a34a;
}
.banner-btn.outline{
    border:2px solid #22c55e;
    color:#22c55e;
    background:#ffffff;
}
.banner-btn.outline:hover{
    background:#f0fdf4;
}
/* ========== 权威检测板块：左侧背景图+重点文字强化完整版 ========== */
.authority-block {
  width: 100%;
  background-color: #ffffff;
  padding: 10px 0;
}
.authority-block .block-title {
  text-align: center;
  margin-bottom: 40px;
  padding: 0 16px;
}
.authority-block .block-title h2 {
  font-size: 32px;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 10px;
}
.authority-block .block-title p {
  font-size: 16px;
  color: #64748b;
}
/* 外层容器 左右等高 */
.authority-block .tab-wrap {
  display: flex;
  align-items: stretch;
  max-width: 1200px;
  margin: 0 auto;
  min-height: 560px;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid #eef1f5;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.03),
    0 8px 24px rgba(15, 23, 42, 0.05);
  overflow: hidden;
}
/* --------左侧侧边栏-------- */
.authority-block .tab-sidebar {
  width: 240px;
  flex-shrink: 0;
  padding: 22px 14px;
  background-color: #fff;
 /*  background-image: url("https://picsum.photos/id/1/240/560");*/
  background-size: cover;
  background-position: left center;
  background-repeat: no-repeat;
  position: relative;
  border-right: 1px solid #9e9e9e42;
}
.authority-block .tab-sidebar::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: rgb(243 245 247);
  z-index: 0;
}
.authority-block .tab-sidebar .sidebar-item {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  margin-bottom: 8px;
  font-size: 17px;
  color: #607d8b;
  cursor: pointer;
  border-radius: 8px;
  background: transparent;
  border: 1px solid transparent;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}
.authority-block .tab-sidebar .sidebar-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  fill: #94a3b8;
}
.authority-block .tab-sidebar .sidebar-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: #dc2626;
  transform: translateY(-1px);
}
.authority-block .tab-sidebar .sidebar-item.active {
  background: rgb(255 247 247 / 18%);
  border-color: rgb(255 255 255);
  color: #0c0101;
  box-shadow: 0 4px 12px #9E9E9E;
}
.authority-block .tab-sidebar .sidebar-item.active svg {
  fill: #0c0101;
}
/* --------右侧内容区域-------- */
.authority-block .tab-content-main {
  flex: 1;
  padding: 28px 32px;
  background: #fefdfd;
}
.authority-block .tab-panel {
  display: none;
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid #eef1f5;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.03),
    0 6px 16px rgba(15, 23, 42, 0.05);
  padding: 30px;
}
.authority-block .tab-panel.active {
  display: block;
  animation: tabFade 0.3s ease;
}
@keyframes tabFade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.authority-block .logo-top-img {
  height: 46px;
  margin-bottom: 16px;
}
.authority-block .desc-notice-text {
  font-size: 15px;
  color: #334155;
  line-height: 1.75;
  margin-bottom: 14px;
}
/* 费用重点突出样式 */
.authority-block .cost-text {
  font-size: 15px;
  color: #1e293b;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eef2f7;
}
.authority-block .cost-hot {
  color: #dc2626;
  font-size: 17px;
  font-weight: 700;
}
.authority-block .red-text {
  color: #dc2626;
  font-weight: 600;
}
.authority-block .param-row {
  display: flex;
  margin-bottom: 14px;
  align-items: flex-start;
  gap: 12px;
}
.authority-block .param-label {
  width: 110px;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 600;
  color: #334155;
  padding: 4px 8px;
  background: #f7f8fa;
  border: 1px solid #e8eaed;
  border-radius: 6px;
}
.authority-block .param-value {
  flex: 1;
  font-size: 14px;
  color: #475569;
  line-height: 1.7;
}
.authority-block .tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.authority-block .tag-item-btn {
  padding: 5px 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  font-size: 13px;
  color: #475569;
  transition: all 0.2s ease;
}
.authority-block .tag-item-btn:hover {
  border-color: #dc2626;
  background: #fef2f2;
  color: #dc2626;
}
.authority-block .submit-order-btn {
  display: inline-block;
  margin-top: 12px;
  padding: 11px 30px;
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  color: #ffffff;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition:
    box-shadow 0.2s ease,
    transform 0.2s ease;
}
.authority-block .submit-order-btn:hover {
  box-shadow: 0 6px 16px rgba(220, 38, 38, 0.25);
  transform: translateY(-2px);
}
/* =========公众号二维码板块========= */
.qrcode-block{
    width:100%;
    padding:60px 0;
    text-align:center;
    background:#fff;
}
.qrcode-block h2{
    font-size:28px;
    margin-bottom:24px;
    color:#1f2937;
}
.qrcode-img{
    width:180px;
    height:180px;
    margin:0 auto;
    border:1px solid #eee;
}
/* =========我们的优势 新版布局========= */
.section{
    padding:90px 0;
}
.container{
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
}
.section-title{
    text-align:center;
    font-size:42px;
    font-weight:700;
    color:#111;
    margin-bottom:48px;
}
.advantage-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:48px;
    align-items:start;
}
.advantage-left h4{
    font-size:26px;
    margin-bottom:24px;
    color:#111;
}
.advantage-left p{
    font-size:17px;
    color:#444;
    margin-bottom:12px;
}
.illust-img{
    width:55%;
    margin-top:30px;
    border-radius:8px;
}
.adv-card-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
}
.adv-card{
    border-radius:16px;
    padding:32px 24px;
    box-shadow:0 4px 16px rgba(0,0,0,0.04);
    background-size:cover;
    background-position:center;
    background-repeat:no-repeat;
    position:relative;
    overflow:hidden;
}
.adv-card::before{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(255,255,255,0.86);
}
.adv-card > *{
    position:relative;
    z-index:2;
}
/* 四张卡片独立背景图 */
.adv-card.green-bg{
    background-image:url("../images/y1.png");
}
.adv-card.beige-bg{
    background-image:url("../images/y2.png");
}
.adv-card:nth-child(3){
    background-image:url("../images/y3.png");
}
.adv-card:nth-child(4){
    background-image:url("../images/y4.png");
}
.adv-icon-svg{
    width:44px;
    height:44px;
    margin-bottom:16px;
}
.adv-card h4{
    font-size:20px;
    font-weight:700;
    margin-bottom:8px;
}
/* =========用户口碑评价========= */
.comment-block{
    width:1200px;
    margin:80px auto;
}
.comment-block .block-title{
    text-align:center;
    margin-bottom:40px;
}
.comment-row{
    display:flex;
    gap:24px;
    margin-top:40px;
}
.comment-card{
    flex:1;
    border-radius:12px;
    box-shadow:0 4px 20px rgba(0,0,0,0.08);
    padding:28px;
    background:#ffffff;
    border:1px solid #f3f4f6;
}
.comment-user-head{
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:12px;
}
.comment-name{
    font-size:15px;
    color:#374151;
    font-weight:600;
}
.star-rate{
    color:#fbbf24;
    font-size:14px;
}
.comment-order{
    font-size:13px;
    color:#71717a;
    margin:8px 0 14px;
}
.comment-text{
    font-size:14px;
    line-height:1.8;
    color:#44403c;
}
/* =========CTA板块 底部大图按钮========= */
.cta-area{
    width:100%;
    padding:100px 20px;
    background-image:url("../images/bg.webp");
    background-size:cover;
    background-position:center;
    position:relative;
    text-align:center;
}
.cta-area::before{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(255,255,255,0.72);
}
.cta-area .container{
    position:relative;
    z-index:2;
}
.cta-area h2{
    font-size:44px;
    font-weight:700;
    margin-bottom:32px;
}
.green-highlight{
    color:#22c55e;
}
.btn-main-green{
    background:#22c55e;
    color:#fff;
    border:none;
    padding:16px 52px;
    border-radius:8px;
    font-size:20px;
    font-weight:600;
    cursor:pointer;
    transition:0.2s;
}
.btn-main-green:hover{
    background:#16a34a;
}
/* ==========合作检测平台 Logo 横向循环滚动 ========== */
.trust-logo-section {
    position: relative;
    z-index: 1;
    background-color: #fff;
    padding: 152px 20px 64px;
    margin-top: 0;
}
.trust-inner {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
}
.trust-title-text {
    position: relative;
    z-index: 3;
    font-size: 42px;
    font-weight: 600;
    color: #222;
    margin: 0 0 24px;
    line-height: 1.5;
    text-align: center;
    opacity: 1;
    visibility: visible;
}
.trust-logo-scroll {
    position: relative;
    z-index: 2;
    overflow: hidden;
}
.trust-logo-track {
    position: relative;
    z-index: 1;
    display: flex;
    width: max-content;
    animation: trustScroll 65s linear infinite;
}
.trust-logo-scroll:hover .trust-logo-track {
    animation-play-state: paused;
}
.trust-logo-item {
    flex: 0 0 210px;
    height: 92px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 14px;
    padding: 0 20px;
    background-color: #ffffff;
    border-radius: 14px;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.05);
}
.trust-logo-item img {
    max-width: 92%;
    max-height: 56px;
    object-fit: contain;
    opacity: 0.88;
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.trust-logo-item:hover img {
    opacity: 1;
    transform: scale(1.03);
}
@keyframes trustScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}
/* =========页脚========= */
.page-footer{
    width:100%;
    background:#1f2937;
    color:#d1d5db;
    padding:50px 0;
}
.footer-container{
    width:1200px;
    margin:0 auto;
    display:flex;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
}
.footer-col h4{
    color:#ffffff;
    font-size:16px;
    margin-bottom:20px;
    font-weight:600;
}
.footer-col p{
    font-size:14px;
    line-height:1.8;
    max-width:340px;
    color:#d1d5db;
}
.footer-qrcode-area{
    display:flex;
    gap:28px;
}
.qr-item{
    text-align:center;
    font-size:14px;
}
/* =========响应式适配========= */
@media (max-width:1240px){
    .header-container,.authority-block,.comment-block,.trust-logo-section,.footer-container{
        width:95%;
    }
    .banner-badge{
        right:16px;
    }
}
@media (max-width:768px){
    .banner-wrap{
        height:auto;
        padding:60px 16px;
    }
    .banner-top-title{
        font-size:28px;
    }
    .banner-buttons{
        flex-direction:column;
        align-items:center;
    }
    .banner-btn{
        width:200px;
    }
    .tab-wrap{
        flex-direction:column;
    }
    .tab-sidebar{
        width:100%;
        border-right:none;
        border-bottom:1px solid #e5e7eb;
    }
    .advantage-row{
        grid-template-columns:1fr;
    }
    .adv-card-grid{
        grid-template-columns:1fr;
    }
    .comment-row,.footer-container{
        flex-direction:column;
        gap:20px;
    }
    .tab-content-main{
        padding:24px 20px;
    }
    .param-row{
        flex-direction:column;
    }
    .param-label{
        width:100%;
        margin-bottom:6px;
    }
    .section-title{
        font-size:28px;
    }
    .cta-area h2{
        font-size:28px;
    }
}
.para-first-indent {
    text-indent: 2em;
    line-height: 1.8;
    margin: 8px 0;
}
.cost-hot{
    color:#dc2626;
    font-weight:700;
    font-size:1.05em;
}
.float-customer-service{
    position:fixed;
    right:20px;
    bottom:40px;
    z-index:999;
}
.float-customer-service a{
    display:block;
    padding:5px 10px;
    background:#22c55e;
    color:#fff;
    border-radius:8px;
    box-shadow:0 4px 12px rgba(0,0,0,0.15);
}

/* 听听同学们怎么说 标题字号可控 */
.student-say-title{
    --say-title-font:42px;
    font-size: var(--say-title-font);
    font-weight:600;
}
@media (max-width:768px){
    .student-say-title{
        --say-title-font:24px;
    }
}


/*板块大标题下方小字说明*/
.section-sub-desc{
    font-size:16px;
    color:#64748b;
    text-align:center;
    max-width:720px;
    margin:12px auto 36px;
    line-height:1.7;
}
@media (max-width:768px) {
    .section-sub-desc{
        font-size:14px;
        padding:0 16px;
        margin:8px auto 24px;
    }
}



/* 公共板块基础样式 */
.home-section {
    padding: 126px 0;  /* 缩小板块上下间距 */
    background-color: #fff;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.section-header {
    margin-bottom: 28px; /* 标题与卡片间距缩小 */
}
.section-tag {
    display: inline-block;
    border: 1px solid #e64340;
    color: #e64340;
    padding: 4px 12px;
    border-radius: 6px;
    font-size:14px;
    font-weight:500;
    background:#fff;
}
.section-title {
    font-size:42px;
    color:#1a2b42;
    margin:12px 0 8px;
    font-weight:700;
}
.section-desc {
    font-size:15px;
    color:#64748b;
    max-width:720px;
    line-height:1.6;
    margin:0;
}


/* ========== 检测流程样式（保留，间距同步收紧） ========== */
.process-step-wrap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap:28px;
}
.process-step-item {
    background:#ffffff;
    padding:24px 20px;
    border-radius:16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.step-num {
    width:40px;
    height:40px;
    background:#22c55e;
    color:#fff;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    font-weight:bold;
    margin-bottom:12px;
}
.process-step-item h3 {
    font-size:17px;
    color:#1a2b42;
    margin:0 0 8px;
}
.process-step-item p {
    font-size:14px;
    color:#64748b;
    line-height:1.6;
    margin:0;
}




/* ========== 常见问题 ========== */
.home-section.home-faq-section{
    background:#fff;
    padding:126px 0;
}
.container{
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
}
.section-header{
    text-align:center;
    margin-bottom:24px;
}
.section-title{
    font-size:42px;
    color:#17243b;
    margin:0 0 8px;
    font-weight:bold;
}
.section-desc{
    font-size:15px;
    color:#64748b;
    margin:0;
}

.faq-card-wrap{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px;
}
.faq-item{
    background:#fff;
    border:1px solid #e8ecf1;
    border-radius:10px;
    overflow:hidden;
}
.faq-question{
    padding:14px 18px;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    background:#f3f2fc;
    transition:0.2s;
}
.faq-question:hover{
    background:#eceaf8;
}
.faq-answer{
    max-height:0;
    overflow:hidden;
    padding:0 18px;
    font-size:14px;
    color:#444;
    line-height:1.6;
    transition:all 0.3s ease;
}
.faq-item.open .faq-answer{
    max-height:300px;
    padding:12px 18px 16px;
}

@media(max-width:768px){
    .home-section.home-faq-section{
        padding:28px 0;
    }
    .section-title{
        font-size:26px;
    }
    .faq-card-wrap{
        grid-template-columns:1fr;
    }
}

.section-desc {
    font-size:15px;
    color:#64748b;
    max-width:720px;
    line-height:1.6;
    margin:0 auto;
    text-align: center;
}