:root{--brand:#D8202F;--brand-d:#a81420;--ink:#15233B;--ink2:#46566e;--bg:#F5F7FA;--line:#e6eaf0;--gold:#C9A24B;--white:#fff;--radius:14px;--shadow:0 8px 28px rgba(21,35,59,.08);}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:13px 28px;border-radius:40px;font-weight:600;font-size:15px;transition:.2s;box-shadow:0 6px 18px rgba(216,32,47,.28)}
.btn:hover{background:var(--brand-d);transform:translateY(-2px)}
.btn.ghost{background:transparent;border:1.5px solid #fff;box-shadow:none}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.section{padding:72px 0}
.eyebrow{color:var(--brand);font-weight:700;letter-spacing:2px;font-size:13px;margin-bottom:10px}
.brand-red{color:var(--brand);font-weight:700}
.h2{font-size:30px;font-weight:800;margin-bottom:14px;letter-spacing:-.5px}
.sub{color:var(--ink2);max-width:680px;margin:0 auto 40px;text-align:center}

/* 导航 */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:19px;color:var(--ink)}
.logo b{color:var(--brand)}
.logo-img{display:flex;align-items:center}
.logo-img img{height:42px;width:auto}
/* 授权品牌墙 */
.brands{background:#fff;padding:38px 0;border-bottom:1px solid var(--line)}
.brands .wrap{display:flex;align-items:center;justify-content:center;gap:56px;flex-wrap:wrap}
.brands .b{display:flex;align-items:center;gap:12px}
.brands img,.brands svg{height:36px;width:auto}
.brands .cap{font-size:14px;color:var(--ink2);font-weight:600;border-left:1px solid var(--line);padding-left:12px}
.nav-links{display:flex;gap:30px;list-style:none}
.nav-links a{font-size:15px;color:var(--ink2);font-weight:500;transition:.2s}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-cta .tel{font-weight:700;color:var(--brand);font-size:15px}
.menu-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:0;padding:8px}
.menu-toggle span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}
.nav-mobile{display:none;background:#fff;border-bottom:1px solid var(--line)}
.nav-mobile a{display:block;padding:14px 20px;border-top:1px solid var(--line);font-weight:500;color:var(--ink2)}
.nav-mobile.show{display:block}

/* 首屏 */
.hero{background:linear-gradient(135deg,#15233B 0%,#243a5e 55%,#33476b 100%);color:#fff;padding:84px 0 72px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:-80px;width:360px;height:360px;background:radial-gradient(circle,rgba(216,32,47,.35),transparent 70%);border-radius:50%}
.hero .badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:7px 16px;border-radius:40px;font-size:13px;margin-bottom:22px}
.hero h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-1px;max-width:760px}
.hero h1 .hl{color:#ff5a66}
.hero p.lead{font-size:18px;color:#cdd8e8;margin:20px 0 32px;max-width:620px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:48px;flex-wrap:wrap}
.hero-stats .s b{font-size:30px;color:#fff;font-weight:800;display:block}
.hero-stats .s span{font-size:13px;color:#a9b8cf}

/* 信任数据带 */
.trustbar{background:var(--ink);color:#fff;padding:30px 0}
.trustbar .wrap{display:flex;justify-content:space-around;gap:20px;flex-wrap:wrap;text-align:center}
.trustbar .b b{font-size:26px;color:var(--gold);font-weight:800}
.trustbar .b span{display:block;font-size:13px;color:#b9c4d6;margin-top:4px}

/* 权威背书 */
.proof{background:#fff}
.proof-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.proof-imgs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.proof-imgs img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;width:100%}
.proof-imgs img:only-child{grid-column:1/-1}
/* 新闻配图 */
.news-row .thumb{flex:0 0 150px;width:150px;height:100px;object-fit:cover;border-radius:10px;border:1px solid var(--line);background:#eef1f6}
.nd-cover{width:100%;max-height:420px;object-fit:cover;border-radius:12px;border:1px solid var(--line);margin:0 0 22px}
.proof h2{font-size:28px;font-weight:800;margin-bottom:16px}
.proof p{color:var(--ink2);margin-bottom:16px}
.proof .awards{list-style:none;display:grid;gap:10px}
.proof .awards li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--ink)}
.proof .awards li::before{content:"★";color:var(--gold);font-size:18px}

/* 优势亮点 */
.adv{background:var(--bg)}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);border:1px solid var(--line);transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(21,35,59,.12)}
.card .ic{width:48px;height:48px;border-radius:12px;background:rgba(216,32,47,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;margin-bottom:16px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{font-size:14px;color:var(--ink2)}

/* 产品 */
.prod{background:#fff}
.prod-tabs{display:flex;gap:12px;justify-content:center;margin-bottom:34px;flex-wrap:wrap}
.prod-tabs span{cursor:pointer;background:var(--bg);border:1px solid var(--line);padding:8px 20px;border-radius:30px;font-weight:600;font-size:14px;color:var(--ink2);transition:.2s;user-select:none}
.prod-tabs span:hover{color:var(--brand);border-color:var(--brand)}
.prod-tabs span.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;transition:.2s}
.prod-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.prod-card img{height:150px;width:100%;object-fit:cover;object-position:center top;background:#f0f3f8}
.prod-card .body{padding:16px}
.prod-card .tag{font-size:12px;color:var(--brand);font-weight:700}
.prod-card h4{font-size:16px;margin:6px 0}
.prod-card p{font-size:13px;color:var(--ink2)}
.prod-card .local{margin-top:10px;font-size:12px;color:var(--ink);background:rgba(201,162,75,.12);padding:8px 10px;border-radius:8px;border-left:3px solid var(--gold)}
.empty{color:#889;text-align:center;padding:40px}

/* 相片库 */
.gal{background:var(--bg)}
.gal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.gal-grid img{aspect-ratio:4/3;object-fit:cover;border-radius:10px;width:100%;transition:.2s}
.gal-grid img:hover{transform:scale(1.03)}

/* 新闻 */
.news{background:#fff}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.2s}
.news-card:hover{box-shadow:var(--shadow)}
.news-card .body{padding:18px}
.news-card .date{font-size:12px;color:var(--brand);font-weight:700}
.news-card h4{font-size:16px;margin:8px 0;line-height:1.5}
.news-card .cat{font-size:12px;color:var(--ink2);background:var(--bg);padding:3px 10px;border-radius:20px;display:inline-block}

/* CTA */
.cta{background:linear-gradient(135deg,#D8202F,#a81420);color:#fff;text-align:center;padding:64px 0}
.cta h2{font-size:30px;font-weight:800;margin-bottom:12px}
.cta p{color:#ffe3e6;margin-bottom:26px}
.cta .btn{background:#fff;color:var(--brand)}

/* 页脚 */
footer{background:var(--ink);color:#aeb9cc;padding:44px 0 26px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer a{color:#aeb9cc;display:block;margin-bottom:8px}
footer a:hover{color:#fff}
.foot-bot{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:18px;font-size:12px;color:#7e8aa0}

/* 后台页脚（admin 用） */
.foot{background:var(--ink);color:#9fb0cc;font-size:13px;padding:22px 0;text-align:center}

@media (max-width:980px){
  .proof-grid{grid-template-columns:1fr;gap:28px}
  .adv-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid,.gal-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-links,.nav-cta{display:none}
  .menu-toggle{display:flex}
  .hero h1{font-size:30px}
  .hero p.lead{font-size:16px}
  .hero-stats{gap:24px}
  .hero-stats .s b{font-size:24px}
  .h2{font-size:24px}
  .proof-imgs{grid-template-columns:repeat(3,1fr)}
  .news-row .thumb{flex-basis:104px;width:104px;height:74px}
  .adv-grid,.news-grid,.prod-grid,.gal-grid{grid-template-columns:1fr}
  .cases-grid,.gal-big,.about-grid,.contact-grid{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr 1fr}
  .ab-tabs .wrap{overflow-x:auto}
  .foot-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .pd-grid{grid-template-columns:1fr !important;gap:22px !important}
  .pd-visual img{height:200px !important}
}

/* 产品卡作为链接 */
.prod-card{text-decoration:none;color:inherit;display:block}

/* 产品详情页 */
.pd-crumb{background:var(--bg);border-bottom:1px solid var(--line);padding:14px 0;font-size:13px;color:var(--ink2)}
.pd-crumb a{color:var(--ink2)}
.pd-crumb a:hover{color:var(--brand)}
.pd-crumb span{color:var(--ink);font-weight:600}
.pd{padding:44px 0 8px}
.pd-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:34px;align-items:start}
.pd-visual img{width:100%;height:300px;object-fit:cover;object-position:center top;border-radius:14px;border:1px solid var(--line);background:#f0f3f8}
.pd-visual .noimg{height:300px;border-radius:14px;background:#eef1f6;display:flex;align-items:center;justify-content:center;color:#899}
.pd-info .tag{font-size:13px;color:var(--brand);font-weight:700}
.pd-info h1{font-size:34px;margin:8px 0 14px;color:var(--ink)}
.pd-info .lead{font-size:17px;color:var(--ink2);line-height:1.6;margin-bottom:18px}
.pd-info .local{font-size:14px;color:var(--ink);background:rgba(201,162,75,.12);padding:10px 14px;border-radius:8px;border-left:3px solid var(--gold);margin-bottom:22px}
.pd-cta{display:flex;gap:12px;flex-wrap:wrap}
.pd-cta .btn{cursor:pointer}
.pd-cta .btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.pd-body{margin-top:40px;max-width:820px}
.pd-desc{font-size:16px;line-height:1.95;color:var(--ink2);white-space:pre-wrap}
.pd-why{margin-top:30px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:22px 26px}
.pd-why h3{margin:0 0 14px;color:var(--ink);font-size:18px}
.pd-why ul{margin:0;padding-left:20px;color:var(--ink2);line-height:2}
.pd-why li::marker{color:var(--brand)}

/* 新闻列表 */
.news-list{margin-top:24px;display:flex;flex-direction:column;gap:0}
.news-row{display:flex;gap:20px;align-items:flex-start;padding:20px 6px;border-bottom:1px solid var(--line);text-decoration:none;color:inherit;transition:.2s}
.news-row:hover{background:var(--bg)}
.news-row .date{flex:0 0 92px;color:var(--brand);font-weight:700;font-size:14px;padding-top:2px}
.news-row .body{flex:1}
.news-row .body h4{margin:0 0 6px;font-size:17px;color:var(--ink)}
.news-row .body p{margin:0;color:var(--ink2);font-size:14px;line-height:1.6}
.news-row .more{flex:0 0 auto;color:#aab;font-size:24px;align-self:center}
.nd{max-width:820px}
.nd .date{color:var(--brand);font-weight:700;font-size:14px}
.nd h1{font-size:30px;margin:8px 0 20px;color:var(--ink)}
.nd-body{font-size:16px;line-height:1.95;color:var(--ink2);white-space:pre-wrap}

/* 案例 */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.case-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;padding:20px;display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:.2s}
.case-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.case-card .cat{font-size:12px;color:var(--brand);font-weight:700}
.case-card h4{font-size:17px;margin:8px 0;line-height:1.45;color:var(--ink)}
.case-card .cust{font-size:13px;color:#889;margin:0 0 8px}
.case-card p{font-size:14px;color:var(--ink2);margin:0 0 14px;flex:1}
.case-card .more{color:var(--brand);font-weight:700;font-size:14px}
.cd{max-width:820px}
.cd .cat{font-size:13px;color:var(--brand);font-weight:700}
.cd h1{font-size:30px;margin:8px 0 6px;color:var(--ink)}
.cd .cust{color:#889;font-size:14px;margin:0 0 20px}
.cd-body{font-size:16px;line-height:1.95;color:var(--ink2);white-space:pre-wrap}

/* 相册大网格 */
.gal-big{grid-template-columns:repeat(4,1fr)}
.gitem{margin:0;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.gitem img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:.2s}
.gitem:hover img{transform:scale(1.04)}
.gitem figcaption{font-size:12px;color:#556;padding:8px 10px;line-height:1.4}

/* 客户服务 */
.svc-list{display:flex;flex-direction:column;gap:18px;max-width:920px;margin:8px auto 0}
.svc{display:grid;grid-template-columns:64px 1fr;gap:18px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 26px}
.svc-ic{width:48px;height:48px;border-radius:12px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800}
.svc-body h3{margin:2px 0 10px;font-size:20px;color:var(--ink)}
.svc-body p{margin:0;color:var(--ink2);line-height:1.9;font-size:15px}
.svc-ul{margin:0;padding-left:20px;color:var(--ink2);line-height:2;font-size:15px}
.svc-ul li::marker{color:var(--brand)}
.svc-ul b{color:var(--ink)}
.sv-hero .sub{margin-top:12px}

/* 关于我们 */
.ab-tabs{background:var(--ink);position:sticky;top:0;z-index:20}
.ab-tabs .wrap{display:flex;gap:6px}
.ab-tabs a{color:#cdd6e6;padding:14px 18px;font-size:14px;font-weight:600;text-decoration:none}
.ab-tabs a:hover{color:#fff}
.about-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:36px;align-items:start}
.ab-p{font-size:15px;line-height:1.9;color:var(--ink2);margin:0 0 14px}
.about-mission{margin:18px 0 0;padding-left:0;list-style:none}
.about-mission li{font-size:14px;color:var(--ink);padding:9px 0;border-top:1px solid var(--line)}
.about-mission b{color:var(--brand);margin-right:6px}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.about-stats .s{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center}
.about-stats .s b{display:block;font-size:26px;color:var(--brand)}
.about-stats .s span{font-size:13px;color:var(--ink2)}
.contact-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:start}
.contact-list{list-style:none;padding:0;margin:16px 0 0}
.contact-list li{display:flex;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink)}
.contact-list li span{flex:0 0 96px;color:var(--brand);font-weight:700}
.contact-card{background:linear-gradient(135deg,#D8202F,#a81420);color:#fff;border-radius:14px;padding:28px}
.contact-card h3{margin:0 0 10px;font-size:19px}
.contact-card p{color:#ffe3e6;margin:0 0 18px}
.contact-card .btn{background:#fff;color:var(--brand);display:inline-block}

/* 可交付产品矩阵 */
.prod-matrix{background:#fff}
.logo-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}
.logo-chip{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 18px;box-shadow:var(--shadow);transition:.2s}
.logo-chip:hover{transform:translateY(-2px);border-color:var(--brand)}
.logo-chip img{height:26px;width:auto;max-width:120px;object-fit:contain}
.logo-chip span{font-size:15px;font-weight:700;color:var(--ink)}

/* 官方授权证书 */
.certs{background:#f5f7fa}
.cert-row{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;margin-top:30px}
.cert{margin:0;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:var(--shadow);width:320px}
.cert img{width:100%;border-radius:8px;display:block;background:#fff}
.cert figcaption{margin-top:12px;text-align:center;font-size:14px;font-weight:700;color:var(--ink2)}

/* 客户 logo 墙 */
.clientwall-sec{background:#fff}
.client-wall{margin-top:30px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.client-wall img{width:100%;display:block}

@media (max-width:768px){ .cert{width:100%} .logo-row{gap:10px} }

/* ===== 移动端适配修正（2026-09-25） =====
   原因：本文件约 134–158 行的 @media 块写在 .about-grid/.cases-grid/.gal-big/.contact-grid
   等基础规则【之前】，同优先级下被后出现的基础规则覆盖，移动端单列规则失效。
   此处于文件末尾重声明，确保生效，并统一补齐各页面手机端排版。 */
@media (max-width:980px){
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:30px}
  .cases-grid{grid-template-columns:repeat(2,1fr)}
  .gal-big{grid-template-columns:repeat(3,1fr)}
  .prod-grid,.gal-grid,.news-grid,.adv-grid{grid-template-columns:repeat(2,1fr)}
  .proof-grid{grid-template-columns:1fr;gap:28px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .cases-grid,.gal-big,.about-grid,.contact-grid{grid-template-columns:1fr}
  .prod-grid,.gal-grid,.news-grid,.adv-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .section{padding:46px 0}
  /* 顶部分段导航：横滑，避免折行 */
  .ab-tabs .wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;flex-wrap:nowrap}
  .ab-tabs a{padding:13px 15px;white-space:nowrap;flex:0 0 auto}
  /* 授权品牌墙：缩小间距 */
  .brands .wrap{gap:24px;padding:28px 16px}
  /* 公司介绍 */
  .about-grid{gap:22px}
  .ab-p{font-size:15px;line-height:1.85}
  .about-mission li{font-size:13.5px}
  .about-stats{grid-template-columns:1fr 1fr;gap:12px;margin-top:2px}
  .about-stats .s{padding:15px 8px;border-radius:12px}
  .about-stats .s b{font-size:24px;line-height:1.2}
  .about-stats .s span{display:block;font-size:12px;margin-top:5px}
  /* 联系我们 */
  .contact-grid{gap:22px}
  .contact-list li{font-size:14px;gap:12px}
  .contact-list li span{flex:0 0 74px}
  .contact-card{padding:22px}
  /* 案例卡 */
  .case-card{padding:16px}
  /* 产品矩阵 / 证书 */
  .cert{width:100%}
  .logo-row{gap:10px;justify-content:center}
  .logo-chip{padding:10px 14px}
  .logo-chip span{font-size:14px}
  /* 新闻列表：缩略图缩小 */
  .news-row{gap:14px;padding:16px 4px}
  .news-row .thumb{flex:0 0 104px;width:104px;height:74px}
  /* 产品详情 */
  .pd-grid{grid-template-columns:1fr !important;gap:22px !important}
  .pd-visual img{height:200px !important}
  .pd-info h1{font-size:26px}
  /* 页脚 */
  .foot-grid{gap:24px}
  .foot-bot{font-size:12px;line-height:1.6}
}
@media (max-width:600px){
  /* 新闻列表：竖向卡片，避免「日期+缩略图」横向挤占正文（原来正文只剩约110px） */
  .news-row{display:block;padding:18px 2px}
  .news-row .date{padding:0 0 8px;flex:none}
  .news-row .thumb{width:100%;height:auto;aspect-ratio:16/9;flex:none;margin:0 0 10px;object-fit:cover}
  .news-row .body h4{font-size:16.5px;line-height:1.5}
  .news-row .body p{font-size:13.5px}
  .news-row .more{display:none}
}
@media (max-width:420px){
  .h2{font-size:22px}
  .hero h1{font-size:26px}
  .hero p.lead{font-size:15px}
  .about-stats .s{padding:13px 5px}
  .about-stats .s b{font-size:21px}
  .about-stats .s span{font-size:11.5px}
  .ab-tabs a{padding:12px 12px;font-size:13.5px}
  .contact-list li span{flex:0 0 66px;font-size:13px}
}