/* ============================================================
   塑胶跑道·球场工程官网 全站样式
   简约商务 / 工业干净 / 专业稳重 / 全响应式
   ============================================================ */
:root{
  --c-primary:#0B3C5D;      /* 深蓝：主色 */
  --c-primary-2:#1565A0;    /* 主色亮 */
  --c-accent:#E2362F;       /* 跑道红：点缀 */
  --c-accent-2:#F26522;
  --c-bg:#F5F7FA;
  --c-card:#FFFFFF;
  --c-text:#1F2937;
  --c-text-2:#5A6A7A;
  --c-text-3:#8A97A6;
  --c-line:#E3E8EE;
  --c-line-2:#CBD5E1;
  --radius:8px;
  --shadow:0 2px 10px rgba(11,60,93,.06);
  --shadow-hover:0 8px 24px rgba(11,60,93,.12);
  --font:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);font-size:15px;line-height:1.75;color:var(--c-text);background:var(--c-bg)}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary-2);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-accent)}
ul,ol{list-style:none}
h1,h2,h3,h4{font-weight:700;line-height:1.4;color:var(--c-primary)}
h1{font-size:26px}
h2{font-size:22px}
h3{font-size:18px}
p{margin:0 0 12px}
table{border-collapse:collapse;width:100%}
th,td{border:1px solid var(--c-line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:#EEF3F8;font-weight:600;color:var(--c-primary);white-space:nowrap}
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:8px 16px;z-index:999}
.skip-link:focus{left:0}
.empty-tip{background:var(--c-card);border:1px dashed var(--c-line-2);border-radius:var(--radius);color:var(--c-text-3);text-align:center;padding:48px 16px;margin:16px 0}
.empty-tip p{margin:0}

/* ============ 顶部（三段式：通栏 / logo 行 / 导航条） ============ */
.site-header{position:sticky;top:0;z-index:100;box-shadow:var(--shadow)}
.header-top{background:#F1F3F5;color:#55606A;font-size:13px}
.header-top .container,
.header-logo .container,
.header-nav .container{max-width:1280px}
.header-top-inner{display:flex;justify-content:flex-start;align-items:center;height:40px;gap:16px;overflow:hidden;white-space:nowrap}
.header-welcome{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.header-logo{background:#fff;border-bottom:1px solid var(--c-line)}
.header-logo-inner{display:flex;flex-wrap:nowrap;align-items:center;gap:36px;height:112px;min-width:0}
.logo{display:flex;align-items:center;gap:16px;flex-shrink:0;min-width:0}
.logo img{width:64px;height:64px;flex-shrink:0}
.logo-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.logo-text strong{font-size:30px;color:var(--c-primary);letter-spacing:4px;white-space:nowrap}
.logo-text small{font-size:14px;color:var(--c-text-3);white-space:nowrap;letter-spacing:1px}
.header-slogan-block{display:flex;flex-direction:column;align-items:flex-start;gap:4px;flex:1;min-width:0;border-left:1px solid var(--c-line-2);padding-left:34px;white-space:nowrap}
.header-slogan-block p{font-size:21px;color:var(--c-text);font-weight:700;white-space:nowrap}
.header-slogan-block span{font-size:13px;color:var(--c-text-3);letter-spacing:2px;white-space:nowrap}
.header-tel{display:flex;align-items:center;gap:10px;color:var(--c-primary);white-space:nowrap;flex-shrink:0}
.header-tel svg{flex-shrink:0;color:var(--c-accent)}
.header-tel .tel-meta{display:flex;flex-direction:column;align-items:flex-start;gap:2px}
.header-tel .tel-meta span{font-size:12px;color:var(--c-text-3);font-weight:400}
.header-tel .tel-meta a{font-size:24px;font-weight:700;color:var(--c-primary);line-height:1.1}
.header-tel .tel-meta a:hover{color:var(--c-accent)}
.header-nav{background:var(--c-primary)}
.header-nav-inner{display:flex;align-items:center;height:58px;min-width:0}
.main-nav{flex:1;min-width:0;display:flex;justify-content:center;overflow:visible}
.main-nav ul{display:flex;gap:4px;flex-wrap:nowrap;min-width:0;width:100%;justify-content:center}
.main-nav li{flex-shrink:0;min-width:0}
.main-nav a{display:block;padding:0 26px;line-height:58px;font-size:16px;font-weight:600;color:#fff;white-space:nowrap;flex-shrink:0}
.main-nav a:hover{color:#FFD97A;background:rgba(255,255,255,.08)}
.main-nav li.active a{color:#0B3C5D;font-weight:700;background:#F0B429}
.main-nav li.active a::after{display:none}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;margin-left:auto}
.nav-toggle span{display:block;width:24px;height:2px;background:#fff;border-radius:2px}

/* ============ 面包屑 ============ */
.breadcrumb{background:#EDF2F7;border-bottom:1px solid var(--c-line);font-size:13px}
.breadcrumb .container{display:flex;flex-wrap:wrap;align-items:center;padding-top:10px;padding-bottom:10px;gap:6px}
.breadcrumb .sep{color:var(--c-text-3)}
.breadcrumb .current{color:var(--c-text-2)}

/* ============ 页头横幅 ============ */
.page-hero{background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-primary-2) 100%);color:#fff;padding:42px 0;text-align:center}
.page-hero h1{color:#fff;font-size:30px;margin-bottom:8px}
.page-hero p{color:#C9DCEB;max-width:760px;margin:0 auto;font-size:15px}

/* ============ 通用板块 ============ */
.section{padding:52px 0}
.section-alt{background:#fff}
.section-head{text-align:center;max-width:820px;margin:0 auto 34px}
.section-head .sec-title{position:relative;display:inline-block;padding-bottom:12px}
.section-head .sec-title::after{content:'';position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:56px;height:3px;background:var(--c-accent);border-radius:2px}
.section-head .sec-sub{color:var(--c-text-2);margin-top:12px;font-size:15px}
.section-head .sec-en{color:var(--c-text-3);font-size:12px;letter-spacing:3px;text-transform:uppercase;display:block;margin-bottom:6px}
.sec-more{text-align:center;margin-top:28px}
.btn{display:inline-block;background:var(--c-accent);color:#fff;padding:10px 28px;border-radius:var(--radius);font-weight:600;border:0;cursor:pointer;font-size:15px;transition:background .2s}
.btn:hover{background:#C62A24;color:#fff}
.btn-outline{background:transparent;border:1px solid var(--c-primary-2);color:var(--c-primary-2)}
.btn-outline:hover{background:var(--c-primary-2);color:#fff}

/* ============ 首页 Banner ============ */
.hero-slider{position:relative;overflow:hidden;background:var(--c-primary)}
.hero-track{display:flex;transition:transform .6s ease}
.hero-slide{position:relative;min-width:100%;aspect-ratio:1920/650;min-height:430px;display:flex;align-items:center}
.hero-slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-slide::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,60,93,.82) 0%,rgba(11,60,93,.45) 55%,rgba(11,60,93,.15) 100%)}
.hero-slide.no-overlay::after{background:none}
.hero-slide.no-overlay .hero-content{display:none}
.hero-content{position:relative;z-index:2;max-width:640px;color:#fff}
.hero-content h1{color:#fff;font-size:34px;line-height:1.3;margin-bottom:14px}
.hero-content h1 em{font-style:normal;color:#FFD166}
.hero-content p{color:#DCE8F2;font-size:16px;margin-bottom:22px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-dots{position:absolute;bottom:18px;left:0;right:0;z-index:3;display:flex;justify-content:center;gap:8px}
.hero-dots button{width:10px;height:10px;border-radius:50%;border:0;background:rgba(255,255,255,.4);cursor:pointer;padding:0}
.hero-dots button.active{background:#fff;width:26px;border-radius:6px}

/* ============ 产品中心：左分类导航（灰底面板+主色分类块+子栏目下拉）+ 右产品网格 ============ */
.pc-layout{display:flex;gap:24px;align-items:flex-start}
.pc-side{flex:0 0 262px;background:#F5F7FA;border:1px solid var(--c-line);border-radius:var(--radius);position:sticky;top:96px;z-index:20}
.pc-side-head{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;text-align:center;padding:20px 16px 18px;border-radius:var(--radius) var(--radius) 0 0}
.pc-side-head p{margin:0;font-size:21px;font-weight:700;letter-spacing:3px}
.pc-side-head span{display:block;margin-top:4px;font-size:11px;letter-spacing:2px;color:rgba(255,255,255,.8);text-transform:uppercase}
.pc-nav{padding:14px 12px}
.pc-group{position:relative}
.pc-cat{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:8px;color:#fff;background:var(--c-primary);font-size:15px;font-weight:600;letter-spacing:1px;margin-bottom:8px;transition:all .2s}
.pc-cat::before{content:'';width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.55);flex-shrink:0;transition:background .2s}
.pc-cat:hover{background:var(--c-primary-2);transform:translateX(3px);color:#fff}
.pc-cat:hover::before{background:#fff}
.pc-cat.active{background:var(--c-accent);box-shadow:0 4px 14px rgba(204,22,29,.35)}
.pc-cat.active::before{background:#fff}
.pc-cat-txt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pc-arrow{flex-shrink:0;font-size:12px;line-height:1;opacity:.75;transition:transform .2s,opacity .2s;padding:2px 4px;cursor:pointer}
.pc-cat:hover .pc-arrow{opacity:1}
.pc-group.open .pc-arrow{transform:rotate(180deg);opacity:1}
/* 子栏目下拉浮层（点击箭头展开，手风琴式） */
.pc-sub{position:absolute;left:0;top:calc(100% + 4px);width:100%;min-width:210px;background:#fff;border:1px solid var(--c-line);border-radius:10px;box-shadow:0 12px 30px rgba(15,42,64,.18);padding:6px;z-index:40;display:none;list-style:none;margin:0}
.pc-group.open .pc-sub{display:block}
.pc-sub li{margin:0}
.pc-sub a{display:block;padding:9px 12px;border-radius:6px;color:var(--c-text);font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:all .2s}
.pc-sub a:hover{background:#F0F6FB;color:var(--c-accent);padding-left:16px}
.pc-main{flex:1;min-width:0}

/* ============ 子栏目导航（产品分类按钮） ============ */
.sub-nav{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:-4px auto 30px;max-width:1100px}
.sub-nav-item{display:inline-block;padding:8px 18px;border:1px solid var(--c-line);border-radius:24px;font-size:14px;color:var(--c-text-2);background:#fff;transition:all .2s}
.sub-nav-item:hover{border-color:var(--c-accent);color:var(--c-accent)}
.sub-nav-item.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ============ 横向滚动轮播（首页产品/案例） ============ */
.scroll-wrap{position:relative}
.scroll-viewport{overflow:hidden;margin:-6px}
.scroll-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px;cursor:grab;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.scroll-track::-webkit-scrollbar{display:none}
.scroll-track.dragging{cursor:grabbing;scroll-snap-type:none}
.scroll-item{flex:0 0 calc((100% - 32px)/3);scroll-snap-align:start;min-width:0}
.scroll-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:40px;height:40px;border-radius:50%;border:0;background:rgba(11,60,93,.55);color:#fff;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.scroll-nav:hover{background:var(--c-accent)}
.scroll-prev{left:-14px}
.scroll-next{right:-14px}
.scroll-hint{text-align:center;color:var(--c-text-3);font-size:12px;margin-top:10px}

/* 卡片（产品/案例/新闻通用） */
.card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s;height:100%}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#E8EEF4}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-media img{transform:scale(1.05)}
.card-tag{position:absolute;top:10px;left:10px;background:var(--c-accent);color:#fff;font-size:12px;padding:2px 10px;border-radius:20px}
.card-body{padding:14px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.card-title{font-size:15px;font-weight:600;color:var(--c-primary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:inherit}
.card-title a:hover{color:var(--c-accent)}
.card-desc{font-size:13px;color:var(--c-text-2);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.card-meta{font-size:12px;color:var(--c-text-3);display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}

/* ============ 核心优势 ============ */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.adv-item{display:flex;gap:16px;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:22px}
.adv-icon{flex-shrink:0;width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;display:flex;align-items:center;justify-content:center}
.adv-item h3{font-size:16px;margin-bottom:6px}
.adv-item p{font-size:13px;color:var(--c-text-2);margin:0}

/* ============ 服务流程 ============ */
.step-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:step}
.step-item{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px 16px;text-align:center;position:relative}
.step-num{width:44px;height:44px;margin:0 auto 12px;border-radius:50%;background:var(--c-accent);color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center}
.step-item h3{font-size:16px;margin-bottom:6px}
.step-item p{font-size:13px;color:var(--c-text-2);margin:0}
.step-item::after{content:'›';position:absolute;right:-14px;top:50%;transform:translateY(-50%);color:var(--c-line-2);font-size:22px;z-index:2}
.step-item:last-child::after{display:none}

/* ============ 新闻 ============ */
.news-cat-block{margin-bottom:36px}
.news-cat-head{display:flex;align-items:center;justify-content:space-between;border-bottom:2px solid var(--c-primary);padding-bottom:10px;margin-bottom:18px}
.news-cat-head h2{font-size:19px}
.news-cat-head a{font-size:13px;color:var(--c-text-2)}
/* 首页新闻 tab 切换 */
.news-tab-nav{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:0 auto 26px;max-width:640px}
.news-tab{padding:8px 26px;border:1px solid var(--c-line);border-radius:24px;background:#fff;color:var(--c-text-2);font-size:14px;cursor:pointer;transition:all .2s}
.news-tab:hover{border-color:var(--c-accent);color:var(--c-accent)}
.news-tab.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.news-tab-panel{display:none}
.news-tab-panel.active{display:block}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}

/* ============ CTA 区域 ============ */
.cta-band{background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-primary-2) 100%);color:#fff;padding:40px 0;text-align:center}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:10px}
.cta-band p{color:#C9DCEB;margin-bottom:20px}
.cta-tel{font-size:26px;font-weight:700;color:#FFD166;display:block;margin-top:6px}

/* ============ 列表页 ============ */
.page-body{padding:36px 0 52px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pager{display:flex;justify-content:center;gap:8px;margin-top:36px;flex-wrap:wrap}
.pager .pg{min-width:38px;height:38px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--c-line-2);border-radius:6px;background:#fff;color:var(--c-text);font-size:14px}
.pager .pg:hover{border-color:var(--c-accent);color:var(--c-accent)}
.pager .pg.current{background:var(--c-accent);border-color:var(--c-accent);color:#fff;font-weight:600}
.pager .pg.dots{border-color:transparent;background:none}
.list-meta{color:var(--c-text-3);font-size:13px;margin-bottom:22px}

/* ============ 详情页 ============ */
.detail-body{padding:36px 0 56px}
.detail-main{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:30px 32px}
.detail-title{font-size:26px;margin-bottom:12px}
.detail-meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--c-text-3);font-size:13px;padding-bottom:16px;border-bottom:1px solid var(--c-line);margin-bottom:22px}
.detail-gallery{margin-bottom:26px}
.detail-gallery .main-img{aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#E8EEF4}
.detail-gallery .main-img img{width:100%;height:100%;object-fit:cover}
.thumbs{display:flex;gap:10px;margin-top:10px;flex-wrap:wrap}
.thumbs img{width:84px;height:60px;object-fit:cover;border-radius:6px;cursor:pointer;border:2px solid transparent;opacity:.85}
.thumbs img.active{border-color:var(--c-accent);opacity:1}
.detail-section{margin-top:34px;scroll-margin-top:120px}
.detail-section h2{position:relative;padding-left:14px;margin-bottom:18px;font-size:21px}
.detail-section h2::before{content:'';position:absolute;left:0;top:4px;bottom:4px;width:5px;border-radius:3px;background:var(--c-accent)}
.detail-section h3{font-size:17px;margin:18px 0 10px}
.detail-section p{color:var(--c-text)}
.detail-section ul.dash li{padding-left:20px;position:relative;margin-bottom:8px}
.detail-section ul.dash li::before{content:'';position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--c-accent)}

/* 参数表 */
.param-table{width:100%;border-collapse:collapse}
.param-table th{width:150px;background:#F2F6FA}
.param-table td{background:#fff}

/* FAQ */
.faq-block{margin-top:36px}
.faq-item{border:1px solid var(--c-line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;background:#fff}
.faq-q{display:flex;gap:12px;align-items:flex-start;padding:16px 20px;cursor:pointer;font-weight:600;color:var(--c-primary);font-size:15px}
.faq-q .q-mark{color:var(--c-accent);font-weight:700;flex-shrink:0}
.faq-q::after{content:'+';margin-left:auto;color:var(--c-text-3);font-size:20px;transition:transform .2s;flex-shrink:0}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{display:none;padding:0 20px 16px 52px;color:var(--c-text);font-size:14.5px}
.faq-item.open .faq-a{display:block;animation:fadeIn .25s}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* 相关推荐 */
.related-block{margin-top:40px}
.related-block h2{font-size:20px;border-left:4px solid var(--c-accent);padding-left:12px;margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.related-grid .card-title{font-size:14px}

/* 案例信息卡 */
.case-info{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0}
.case-info .ci{background:#F5F8FB;border:1px solid var(--c-line);border-radius:var(--radius);padding:14px 16px}
.case-info .ci-label{font-size:12px;color:var(--c-text-3);margin-bottom:4px}
.case-info .ci-value{font-size:15px;font-weight:600;color:var(--c-primary)}

/* 文章 */
.article-content p{margin-bottom:16px}
.article-content h2{font-size:20px;margin:26px 0 12px}
.article-content h3{font-size:17px;margin:20px 0 10px}
.article-content ul{margin:0 0 16px}
.article-content li{padding-left:22px;position:relative;margin-bottom:6px}
.article-content li::before{content:'';position:absolute;left:4px;top:10px;width:7px;height:7px;border-radius:2px;background:var(--c-accent)}
.article-content blockquote{border-left:4px solid var(--c-accent);background:#F8FAFC;padding:12px 18px;margin:16px 0;color:var(--c-text-2)}
.article-content table{margin:16px 0}

/* ============ 表单 ============ */
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:28px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;margin-bottom:6px;font-size:14px;color:var(--c-primary)}
.form-group label .req{color:var(--c-accent)}
.form-control{width:100%;padding:10px 14px;border:1px solid var(--c-line-2);border-radius:6px;font-size:14px;font-family:var(--font);background:#fff;transition:border-color .2s}
.form-control:focus{outline:none;border-color:var(--c-primary-2)}
textarea.form-control{min-height:130px;resize:vertical}
.form-tip{font-size:12px;color:var(--c-text-3);margin-top:4px}
.form-msg{padding:10px 16px;border-radius:6px;margin-bottom:16px;display:none}
.form-msg.ok{display:block;background:#E8F7EE;color:#1C7C44;border:1px solid #B5E4C8}
.form-msg.err{display:block;background:#FDECEC;color:#B0302C;border:1px solid #F3C0BE}

/* ============ 关于页 ============ */
.about-hero-img{border-radius:var(--radius);overflow:hidden;margin-bottom:28px;aspect-ratio:21/9}
.about-hero-img img{width:100%;height:100%;object-fit:cover}
.stats-band{background:var(--c-primary);color:#fff;padding:34px 0;margin:30px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center}
.stat-num{font-size:34px;font-weight:800;color:#FFD166;display:block;line-height:1.2}
.stat-label{font-size:14px;color:#C9DCEB}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.img-cap{border-radius:var(--radius);overflow:hidden;margin-bottom:10px}

/* ============ 页脚 ============ */
.site-footer{background:#0B2A42;color:#B9CCDB;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1.2fr 1fr 1.6fr;gap:32px;padding:44px 16px 30px}
.footer-title{color:#fff;font-size:16px;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-title::after{content:'';position:absolute;left:0;bottom:0;width:30px;height:2px;background:var(--c-accent)}
.footer-links li{margin-bottom:8px}
.footer-links a{color:#B9CCDB;font-size:14px}
.footer-links a:hover{color:#fff}
.footer-about p{font-size:13.5px;color:#A9BFD0;line-height:1.8}
.footer-contact li{font-size:13.5px;margin-bottom:8px}
.footer-contact a{color:#FFD166}
.footer-links-row{border-top:1px solid rgba(255,255,255,.08);padding:14px 16px;font-size:13px;color:#8FA8BC}
.footer-links-top{border-top:0;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-links-label{color:#C9DCEB}
.footer-links-row a{color:#8FA8BC;margin:0 8px 4px 0;display:inline-block}
.footer-links-row a:hover{color:#fff}
.footer-bottom{background:#071E2F;padding:16px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:#7E97AA}
.footer-bottom a{color:#7E97AA}
.footer-bottom a:hover{color:#fff}
.footer-admin a{color:#4E6A7F}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .header-logo-inner{gap:20px;height:96px}
  .header-slogan-block{padding-left:22px;gap:10px}
  .header-slogan-block p{font-size:18px}
  .header-slogan-block span{font-size:13px;letter-spacing:1px}
  .main-nav a{padding:0 16px;font-size:15px}
  .header-tel{gap:8px}
  .header-tel svg{width:24px;height:24px}
  .header-tel .tel-meta a{font-size:20px}
  .header-slogan-block p{font-size:18px}
  .header-slogan-block span{font-size:12px}
  .logo-text strong{font-size:25px;letter-spacing:2px}
  .logo-text small{font-size:13px}
  .logo img{width:56px;height:56px}
}
@media (max-width:1024px){
  .pc-side{flex-basis:220px}
  .pc-side-head{padding:14px 12px}
  .pc-side-head p{font-size:17px;letter-spacing:2px}
  .pc-cat{padding:10px 12px;font-size:14px}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(3,1fr);gap:24px 16px}
  .step-item:nth-child(3)::after{display:none}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(3,1fr)}
  .scroll-item{flex-basis:calc((100% - 16px)/2)}
  .case-info{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .header-top-inner{justify-content:flex-start}
  .header-top{font-size:12px}
  .header-welcome{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:calc(100vw - 24px)}
  .header-logo-inner{height:64px;gap:10px}
  .logo{gap:10px}
  .logo img{width:46px;height:46px}
  .logo-text strong{font-size:20px;letter-spacing:1.5px}
  .logo-text small{font-size:11.5px}
  .header-slogan-block{display:none}
  .header-tel{gap:6px;margin-left:auto}
  .header-tel svg{width:22px;height:22px}
  .header-tel .tel-meta span{display:none}
  .header-tel .tel-meta a{font-size:16px}
  .header-nav-inner{height:52px}
  .main-nav{position:fixed;top:0;right:-100%;width:76%;max-width:340px;height:100vh;background:#fff;flex-direction:column;justify-content:flex-start;padding:76px 0 0;box-shadow:-8px 0 30px rgba(0,0,0,.15);transition:right .3s;z-index:200;display:block}
  .main-nav.open{right:0}
  .main-nav ul{flex-direction:column;gap:0}
  .main-nav li{border-bottom:1px solid var(--c-line)}
  .main-nav a{padding:14px 24px;line-height:1.5;border-radius:0;font-size:16px;color:var(--c-text);background:none}
  .main-nav a:hover{color:var(--c-primary);background:#F0F5FA}
  .main-nav li.active a{color:var(--c-primary);background:#F7FAFC}
  .main-nav li.active a::after{display:none}
  .nav-toggle{display:flex;position:relative;z-index:210}
  .main-nav.open ~ .nav-toggle span{background:var(--c-primary)}
  .hero-slide{height:340px;aspect-ratio:auto;min-height:0}
  .hero-content h1{font-size:24px}
  .hero-content p{font-size:14px}
  .section{padding:38px 0}
  .h2{font-size:20px}
  .pc-layout{flex-direction:column}
  .pc-side{flex:none;width:100%;position:static;max-height:none;display:block;padding:0 12px 12px;overflow:visible}
  .pc-side-head{display:none}
  .pc-nav{display:flex;flex-wrap:wrap;gap:8px;padding:12px 0 0}
  .pc-group{position:static}
  .pc-cat{margin:0;padding:8px 16px;border:0;border-radius:20px;font-size:14px;color:#fff;background:var(--c-primary)}
  .pc-cat::before{display:none}
  .pc-cat.active{background:var(--c-accent)}
  .pc-arrow{font-size:10px;padding:0 2px}
  .pc-sub{position:static;width:auto;min-width:0;border:0;border-radius:8px;box-shadow:none;background:transparent;padding:2px 0 0;display:none}
  .pc-group.open .pc-sub{display:flex;flex-wrap:wrap;gap:6px}
  .pc-sub li{padding:0}
  .pc-sub a{background:#fff;border:1px solid var(--c-line);border-radius:16px;padding:6px 12px;font-size:13px;white-space:normal}
  .pc-sub a:hover{padding-left:12px;color:var(--c-accent)}
  .adv-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr 1fr}
  .step-item::after{display:none}
  .grid-3,.news-grid{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .scroll-item{flex-basis:calc((100% - 16px)/1.6)}
  .two-col{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .detail-main{padding:20px 16px}
  .detail-title{font-size:21px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom-inner{flex-direction:column;text-align:center}
  .case-info{grid-template-columns:1fr 1fr}
  .param-table th{width:110px}
  .scroll-nav{display:none}
}
@media (max-width:480px){
  .related-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .case-info{grid-template-columns:1fr}
  .header-top{display:none}
  .logo-text small{display:none}
  .hero-slide{height:300px;aspect-ratio:auto;min-height:0}
}