/* ==========================================================================
   盛行科技官网样式  厦门市盛行科技有限公司 · 闽南理工节能技术研究所
   纯静态 / 无依赖 / 响应式断点 1024px / 860px / 560px
   ========================================================================== */
:root{
  --ink:#0a1f44;
  --ink-2:#122c5e;
  --primary:#0f4caa;
  --primary-dark:#0a3373;
  --accent:#f2620f;
  --accent-dark:#d14e05;
  --bg-soft:#f4f6fa;
  --bg-deep:#081c3f;
  --line:#e3e8f0;
  --text:#33415c;
  --muted:#6b7a90;
  --radius:10px;
  --shadow:0 6px 24px rgba(10,31,68,.08);
  --shadow-lg:0 14px 44px rgba(10,31,68,.14);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","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);color:var(--text);font-size:16px;line-height:1.75;background:#fff}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{color:var(--ink);line-height:1.35;font-weight:700}
.clearfix::after{content:"";display:block;clear:both}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--bg-deep);color:#9fb2d4;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px;gap:16px}
.topbar a{color:#cfe0ff}
.topbar a:hover{color:#fff}
.topbar .tb-left{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .tb-right{display:flex;gap:18px;flex-shrink:0}
.topbar .tb-right .tel{color:#ffb27a;font-weight:700;font-size:14px}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 2px 12px rgba(10,31,68,.07)}
.navbar{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand .logo-img{height:44px;width:auto;flex-shrink:0}
.logo-img.sm{height:38px}
.brand .brand-name{font-size:21px;font-weight:800;color:var(--ink);letter-spacing:1px;line-height:1.2}
.brand .brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav>li{position:relative}
.main-nav .mobile-hotline{display:none}
.main-nav>li>a{display:block;padding:10px 15px;font-size:16px;color:var(--ink);font-weight:600;border-radius:6px}
.main-nav>li>a:hover,.main-nav>li>a.active{color:var(--primary)}
.main-nav>li>a.active{box-shadow:inset 0 -3px 0 var(--accent)}
/* 下拉菜单 */
.main-nav .has-drop>a::after{content:"";display:inline-block;width:7px;height:7px;margin-left:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%);min-width:230px;background:#fff;border-radius:0 0 var(--radius) var(--radius);box-shadow:var(--shadow-lg);padding:8px 0;opacity:0;visibility:hidden;transition:.2s}
.main-nav>li:hover .dropdown{opacity:1;visibility:visible}
.dropdown li a{display:block;padding:9px 20px;font-size:14.5px;color:var(--text);white-space:nowrap}
.dropdown li a:hover{background:var(--bg-soft);color:var(--primary)}
.nav-toggle{display:none;width:44px;height:44px;border:0;background:none;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{display:block;width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-cta .hotline{font-size:14px;color:var(--ink);font-weight:700;white-space:nowrap}
.nav-cta .hotline b{color:var(--accent);font-size:17px}

/* ---------- 面包屑 ---------- */
.breadcrumb{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.breadcrumb .container{padding-top:12px;padding-bottom:12px;font-size:13.5px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 8px;color:#b8c2d4}
.breadcrumb .here{color:var(--ink);font-weight:600}

/* ---------- 页面通用 ---------- */
.page-hero{background:linear-gradient(120deg,var(--ink) 0%,var(--primary-dark) 55%,#1257c9 100%);color:#fff;padding:64px 0;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 85% 20%,rgba(255,255,255,.12) 0,transparent 42%),repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 72px)}
.page-hero .container{position:relative}
.page-hero h1{color:#fff;font-size:34px;margin-bottom:10px}
.page-hero p{color:#c4d5f2;font-size:16px;max-width:760px}
.section{padding:72px 0}
.section.bg-soft{background:var(--bg-soft)}
.sec-head{text-align:center;margin-bottom:46px}
.sec-head .kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;color:var(--accent);text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-size:30px}
.sec-head .lead{color:var(--muted);max-width:680px;margin:12px auto 0;font-size:15.5px}
.sec-head.left{text-align:left}
.sec-head.left .lead{margin-left:0}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:13px 30px;border-radius:6px;font-size:16px;font-weight:700;cursor:pointer;border:0;transition:.2s;line-height:1.4}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff}
.btn-outline{border:1.5px solid rgba(255,255,255,.7);color:#fff;background:transparent}
.btn-outline:hover{background:#fff;color:var(--primary);border-color:#fff}
.btn-ghost{border:1.5px solid var(--primary);color:var(--primary);background:#fff}
.btn-ghost:hover{background:var(--primary);color:#fff}

/* ---------- 首页首屏 ---------- */
.hero{background:linear-gradient(135deg,#081c3f 0%,#0a2a5e 52%,#0f4caa 100%);color:#fff;padding:44px 0 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 78% 30%,rgba(242,98,15,.16) 0,transparent 40%),radial-gradient(circle at 15% 85%,rgba(60,130,255,.18) 0,transparent 45%),repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 64px),repeating-linear-gradient(90deg,rgba(255,255,255,.025) 0 1px,transparent 1px 64px)}
.hero .container{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:stretch;padding-bottom:44px}
.hero-brandline{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:#a9c2ec;border:1px solid rgba(169,194,236,.35);border-radius:99px;padding:5px 14px;margin-bottom:14px}
.hero-brandline .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.hero h1{color:#fff;font-size:34px;line-height:1.25;margin-bottom:12px}
.hero h1 em{font-style:normal;color:#ffb27a}
.hero .hero-sub{font-size:15px;color:#c4d5f2;margin-bottom:18px;max-width:560px}
.hero .hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-width:640px}
.hero-stats .stat{background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.14);border-radius:10px;padding:9px 12px;transition:.25s}
.hero-stats .stat:hover{border-color:rgba(255,178,122,.6);transform:translateY(-2px)}
.hero-stats .num{font-size:21px;font-weight:800;color:#fff;line-height:1.2}
.hero-stats .num small{font-size:14px;font-weight:600;color:#ffb27a;margin-left:2px}
.hero-stats .lbl{font-size:13px;color:#9fb2d4}
.hero-figure{position:relative;display:flex;flex-direction:column;justify-content:center}
.hero-figure .figure-card{position:relative;border-radius:16px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.4);border:1px solid rgba(255,255,255,.14);aspect-ratio:1/1;width:100%;max-width:460px;margin-inline:auto;background:#fff}
.hero-figure .figure-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.hero-figure .figure-badge{position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.95);color:var(--ink);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.25);padding:9px 14px;display:flex;gap:14px;align-items:center;z-index:3}
.hero-figure .figure-badge .bnum{font-size:24px;font-weight:800;color:var(--accent);line-height:1.1}
.hero-figure .figure-badge .blbl{font-size:12.5px;color:var(--muted);line-height:1.4}
.hero-strip{background:linear-gradient(90deg,rgba(4,14,34,.72),rgba(10,42,94,.55));border-top:1px solid rgba(255,255,255,.08);position:relative}
.hero .strip-inner{display:flex;align-items:center;gap:22px;padding-top:18px;padding-bottom:18px;flex-wrap:wrap}
.strip-years{display:flex;align-items:baseline;gap:8px;font-size:44px;font-weight:900;color:#fff;line-height:1;letter-spacing:1px;font-variant-numeric:tabular-nums}
.strip-years small{font-size:15px;font-weight:800;letter-spacing:3px;color:#ffb27a}
.strip-years em{font-style:normal;font-size:12.5px;font-weight:600;color:#9fb2d4;letter-spacing:.5px;border-left:1px solid rgba(255,255,255,.25);padding-left:10px}
.strip-slogan{font-size:21px;font-weight:800;color:#fff;letter-spacing:5px;white-space:nowrap}
.strip-divider{width:1px;height:34px;background:rgba(255,255,255,.22)}
.strip-core{margin-left:auto;font-size:23px;font-weight:900;color:#fff;letter-spacing:3px;white-space:nowrap}
.strip-core i{font-style:normal;display:inline-block;margin:0 3px;padding:0 4px;font-size:28px;letter-spacing:1px;transform:skewX(-6deg);background:linear-gradient(180deg,#ffe27a 0%,#ffb02e 45%,#f2620f 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(2px 2px 0 rgba(122,26,0,.6))}
.hero-strip .tel-big{font-size:22px;font-weight:800;color:#ffb27a;white-space:nowrap}

/* ---------- 首页：核心产品 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#c8d6ee}
.prod-card .pc-img{aspect-ratio:1/1;overflow:hidden;background:#f0f3f9}
.prod-card .pc-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.prod-card:hover .pc-img img{transform:scale(1.05)}
.prod-card .pc-body{padding:16px 16px 18px;flex:1;display:flex;flex-direction:column}
.prod-card h3{font-size:16px;margin-bottom:6px}
.prod-card .pc-range{font-size:12.5px;color:var(--accent);font-weight:700;margin-bottom:8px}
.prod-card p{font-size:13px;color:var(--muted);flex:1}
.prod-card .pc-more{margin-top:10px;font-size:13px;font-weight:700;color:var(--primary)}
.prod-card:hover .pc-more{color:var(--accent)}

/* ---------- 首页：技术优势 ---------- */
.tech-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.tech-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tech-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;transition:.25s}
.tech-item:hover{box-shadow:var(--shadow);border-color:#c8d6ee;transform:translateY(-3px)}
.tech-item .ti-icon{width:46px;height:46px;border-radius:10px;background:linear-gradient(135deg,var(--primary),#3d7be0);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.tech-item .ti-icon svg{width:24px;height:24px}
.tech-item h3{font-size:16.5px;margin-bottom:6px}
.tech-item p{font-size:13.5px;color:var(--muted)}
.tech-cta{margin-top:26px}
.tech-visual{position:relative}
.tech-visual .tv-slides{position:relative;width:100%;aspect-ratio:1/1;border-radius:14px;box-shadow:var(--shadow-lg);background:#fff;overflow:hidden}
.tech-visual .tv-slides img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.tech-visual .tv-card{position:absolute;right:-14px;bottom:-20px;background:#fff;border-radius:12px;box-shadow:var(--shadow-lg);padding:16px 22px}
.tech-visual .tv-card .n{font-size:28px;font-weight:800;color:var(--primary);line-height:1.15}
.tech-visual .tv-card .t{font-size:13px;color:var(--muted)}

/* ---------- 节能数据条 ---------- */
.data-band{background:linear-gradient(120deg,var(--accent) 0%,#ff8a3d 100%);color:#fff}
.data-band .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:44px;padding-bottom:44px;text-align:center}
.data-band .n{font-size:40px;font-weight:800;line-height:1.2}
.data-band .n small{font-size:16px;font-weight:700}
.data-band .t{font-size:14.5px;opacity:.94}

/* ---------- 应用领域 ---------- */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.app-tile{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:1/1;display:block}
.app-tile img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.app-tile:hover img{transform:scale(1.06)}
.app-tile .mask{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(8,22,55,.88) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:16px 18px}
.app-tile .mask h3{color:#fff;font-size:17px}
.app-tile .mask span{font-size:12.5px;color:#ffb27a;font-weight:700;margin-top:2px}
.app-tile .arrow{position:absolute;right:14px;top:12px;width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.16);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;transition:.25s}
.app-tile:hover .arrow{background:var(--accent)}

/* ---------- 研究所背书 ---------- */
.institute{background:linear-gradient(120deg,var(--ink) 0%,var(--primary-dark) 60%,#1257c9 100%);color:#fff;position:relative;overflow:hidden}
.institute::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 90% 80%,rgba(242,98,15,.14) 0,transparent 42%)}
.institute .container{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.institute h2{color:#fff;font-size:30px;margin-bottom:14px}
.institute .inst-sub{color:#c4d5f2;margin-bottom:24px;font-size:15.5px}
.inst-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:26px}
.inst-points .ip{border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:16px 18px;background:rgba(255,255,255,.05)}
.inst-points .ip .n{font-size:24px;font-weight:800;color:#ffb27a}
.inst-points .ip .t{font-size:13px;color:#c4d5f2;margin-top:2px}
.institute img{border-radius:14px;border:1px solid rgba(255,255,255,.16);box-shadow:0 24px 60px rgba(0,0,0,.4);width:100%;aspect-ratio:1/1;object-fit:cover}

/* ---------- 案例卡片 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.case-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.case-card .cc-img{aspect-ratio:1/1;overflow:hidden;background:#eef2f8}
.case-card .cc-img img{width:100%;height:100%;object-fit:cover}
.case-card .cc-body{padding:20px 22px 22px}
.case-card .cc-tag{display:inline-block;font-size:12px;font-weight:700;color:var(--primary);background:#e8f0fd;border-radius:99px;padding:3px 12px;margin-bottom:10px}
.case-card h3{font-size:17px;margin-bottom:8px}
.case-card .cc-meta{font-size:13px;color:var(--muted);margin-bottom:10px}
.case-card .cc-result{border-top:1px dashed var(--line);padding-top:10px;font-size:13.5px}
.case-card .cc-result b{color:var(--accent)}

/* ---------- 通用网格与图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split .img-wrap img{border-radius:14px;box-shadow:var(--shadow-lg);width:100%;aspect-ratio:1/1;object-fit:contain;background:#fff;padding:8px}
.check-list li{position:relative;padding-left:30px;margin-bottom:12px;font-size:15px}
.check-list li::before{content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;background:var(--accent);box-shadow:inset 0 0 0 4.5px #fff,0 0 0 1.5px var(--accent)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.25s}
.feature-box:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.feature-box h3{font-size:17px;margin-bottom:8px}
.feature-box p{font-size:14px;color:var(--muted)}

/* ---------- 参数表 ---------- */
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.spec-table caption{text-align:left;font-size:16px;font-weight:700;color:var(--ink);padding-bottom:12px}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:11px 16px;text-align:left}
.spec-table thead th{background:var(--ink);color:#fff;font-weight:600;border-color:var(--ink)}
.spec-table tbody tr:nth-child(even){background:#f8fafd}
.spec-table tbody th{background:#eef3fb;color:var(--ink);font-weight:600;width:170px}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- 产品详情页 ---------- */
.pd-head{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.pd-gallery{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.pd-gallery{max-width:750px;margin:0 auto}.pd-gallery .main-img{aspect-ratio:1/1;overflow:hidden;background:#fff}
.pd-gallery .main-img img{width:100%;height:100%;object-fit:contain}
.pd-thumbs{display:flex;gap:10px;padding:12px}
.pd-thumbs button{width:76px;height:56px;border:2px solid var(--line);border-radius:8px;overflow:hidden;cursor:pointer;background:#fff;padding:0;flex-shrink:0}
.pd-thumbs button.active{border-color:var(--accent)}
.pd-thumbs img{width:100%;height:100%;object-fit:contain}
.pd-info .pd-title{font-size:28px;margin-bottom:8px}
.pd-info .pd-range{display:inline-block;font-size:14px;font-weight:800;color:#fff;background:linear-gradient(120deg,var(--accent),#ff8a3d);border-radius:6px;padding:5px 14px;margin-bottom:16px}
.pd-info .pd-desc{color:var(--muted);margin-bottom:18px;font-size:15px}
.pd-kv{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;font-size:14px;margin-bottom:22px}
.pd-kv .k{color:var(--muted)}
.pd-kv .v{color:var(--ink);font-weight:700}
.pd-cta{display:flex;gap:12px;flex-wrap:wrap}
.pd-section h2{font-size:24px;margin-bottom:20px;padding-left:14px;border-left:4px solid var(--accent)}
.pd-full{margin-bottom:8px}

/* ---------- 应用详情 ---------- */
.app-hero-img{border-radius:14px;box-shadow:var(--shadow-lg);margin-bottom:8px;width:100%;aspect-ratio:1/1;object-fit:contain;background:#fff;padding:8px}
.fact-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:26px 0}
.fact{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center}
.fact .n{font-size:26px;font-weight:800;color:var(--accent)}
.fact .t{font-size:13px;color:var(--muted);margin-top:4px}

/* ---------- 关于我们 ---------- */
.timeline{position:relative;margin:10px 0 0 6px;padding-left:26px;border-left:2px solid var(--line)}
.timeline li{position:relative;padding-bottom:24px}
.timeline li::before{content:"";position:absolute;left:-33px;top:6px;width:12px;height:12px;border-radius:50%;background:#fff;border:3px solid var(--primary)}
.timeline .year{font-size:15px;font-weight:800;color:var(--primary)}
.timeline p{font-size:14px;color:var(--muted)}
.team-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.team-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;text-align:center;transition:.25s}
.team-item:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.team-item .ti-num{font-size:30px;font-weight:800;color:var(--primary);line-height:1.2}
.team-item .ti-num small{font-size:15px;color:var(--accent)}
.team-item .ti-t{font-size:13.5px;color:var(--muted);margin-top:6px}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch}
.gallery figure{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;background:#fff}
.gallery figure img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;display:block}
.gallery figcaption{font-size:13px;color:var(--muted);padding:10px 14px;background:#fff;margin-top:auto}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start}
.contact-cards{display:grid;gap:14px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;display:flex;gap:16px;align-items:flex-start;transition:.25s}
.contact-card:hover{box-shadow:var(--shadow)}
.contact-card .ci{width:44px;height:44px;flex-shrink:0;border-radius:10px;background:linear-gradient(135deg,var(--primary),#3d7be0);color:#fff;display:flex;align-items:center;justify-content:center}
.contact-card .ci svg{width:22px;height:22px}
.contact-card h3{font-size:15.5px;margin-bottom:4px}
.contact-card p,.contact-card a{font-size:14.5px;color:var(--muted)}
.contact-card a{color:var(--primary);font-weight:700}
.message-form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px;box-shadow:var(--shadow)}
.message-form h2{font-size:22px;margin-bottom:6px}
.message-form .fm-tip{font-size:13px;color:var(--muted);margin-bottom:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-group label i{color:var(--accent);font-style:normal;margin-left:2px}
.form-group input,.form-group select,.form-group textarea{width:100%;border:1.5px solid var(--line);border-radius:8px;padding:11px 14px;font-size:15px;font-family:inherit;color:var(--ink);background:#fbfcfe;transition:.2s}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(15,76,170,.1)}
.form-group textarea{resize:vertical;min-height:110px}
.map-placeholder{border-radius:14px;overflow:hidden;border:1px solid var(--line)}

/* ---------- FAQ ---------- */
.faq details{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;background:#fff;overflow:hidden}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:700;color:var(--ink);font-size:15.5px;list-style:none;position:relative;padding-right:46px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--accent);font-weight:400}
.faq details[open] summary::after{content:"−"}
.faq .faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--muted)}

/* ---------- CTA 条 ---------- */
.cta-band{background:linear-gradient(120deg,var(--primary-dark),var(--primary) 60%,#2f6fd0);color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 88% 20%,rgba(255,255,255,.14) 0,transparent 40%)}
.cta-band .container{position:relative;display:flex;justify-content:space-between;align-items:center;gap:24px;padding-top:38px;padding-bottom:38px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:6px}
.cta-band p{color:#c4d5f2;font-size:14.5px}
.cta-band .cta-right{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cta-band .cta-tel{font-size:26px;font-weight:800;color:#ffb27a;white-space:nowrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#071733;color:#8ea3c8}
.site-footer .ft-main{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.site-footer .ft-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.site-footer .ft-brand .brand-name{color:#fff;font-size:19px;font-weight:800}
.site-footer .ft-brand .brand-sub{color:#8ea3c8;font-size:11px}
.site-footer p,.site-footer li{font-size:13.5px;line-height:2}
.site-footer a{color:#8ea3c8}
.site-footer a:hover{color:#fff}
.site-footer .ft-contact li{position:relative;padding-left:22px}
.site-footer .ft-contact svg{position:absolute;left:0;top:8px;width:14px;height:14px;color:var(--accent)}
.site-footer .ft-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:13px}
.site-footer .ft-bottom a{color:#8ea3c8}
.site-footer .ft-bottom a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
.mobile-callbar{display:none}
.back-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:.25s;z-index:90}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--accent)}

/* ==========================================================================
   响应式 1024px（平板横屏/小桌面）
   ========================================================================== */
@media (max-width:1024px){
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .app-grid{grid-template-columns:repeat(3,1fr)}
  .hero .container{grid-template-columns:1fr;gap:36px;padding-bottom:60px}
  .hero-figure{max-width:560px}
  .tech-wrap{grid-template-columns:1fr;gap:40px}
  .institute .container{grid-template-columns:1fr;gap:36px}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .pd-head{grid-template-columns:1fr;gap:32px}
  .contact-grid{grid-template-columns:1fr;gap:28px}
  .site-footer .ft-main{grid-template-columns:1fr 1fr;gap:28px}
  .nav-cta .hotline{display:none}
}
/* ==========================================================================
   响应式 860px（平板竖屏）
   ========================================================================== */
@media (max-width:860px){
  .section{padding:56px 0}
  .topbar .tb-left{display:none}
  .topbar .container{justify-content:center}
  .navbar{height:64px}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;left:0;right:0;top:64px;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 0;box-shadow:0 20px 40px rgba(10,31,68,.18);max-height:calc(100vh - 64px);overflow-y:auto;transform:translateY(-12px);opacity:0;visibility:hidden;transition:.25s;border-top:1px solid var(--line)}
  .main-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .main-nav>li>a{padding:13px 24px;border-radius:0;font-size:15.5px}
  .main-nav>li>a.active{box-shadow:inset 3px 0 0 var(--accent);background:var(--bg-soft)}
  .main-nav .has-drop>a::after{position:absolute;right:24px;top:20px}
  .main-nav>li{position:static}
  .main-nav .mobile-hotline{display:block;border-top:1px solid var(--line);margin-top:6px;padding-top:2px}
  .main-nav .mobile-hotline a{color:var(--accent);font-weight:800}
  .dropdown{position:static;transform:none;min-width:0;box-shadow:none;border-radius:0;opacity:1;visibility:visible;display:none;padding:0;background:var(--bg-soft)}
  .main-nav>li.drop-open .dropdown{display:block}
  .dropdown li a{padding-left:40px;white-space:normal}
  .hero h1{font-size:32px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:18px 12px}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .fact-row{grid-template-columns:repeat(3,1fr);gap:12px}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .page-hero{padding:48px 0}
  .page-hero h1{font-size:27px}
  .sec-head h2{font-size:25px}
  .data-band .n{font-size:30px}
  .strip-years{font-size:34px}
  .strip-slogan{font-size:16px;letter-spacing:3px}
  .strip-divider{display:none}
  .strip-core{margin-left:0;font-size:18px;letter-spacing:2px}
  .strip-core i{font-size:22px}
  .form-row{grid-template-columns:1fr}
  .team-strip{grid-template-columns:repeat(2,1fr)}
}
/* ==========================================================================
   响应式 560px（手机）
   ========================================================================== */
@media (max-width:560px){
  body{font-size:15px}
  .container{padding:0 16px}
  .hero{padding-top:56px}
  .hero .container{padding-bottom:52px}
  .hero h1{font-size:26px}
  .hero .hero-sub{font-size:14.5px}
  .hero .btn{padding:12px 22px;font-size:15px}
  .hero-stats .num{font-size:21px}
  .hero-figure .figure-badge{left:8px;bottom:12px;padding:10px 14px}
  .strip-inner{justify-content:center;gap:10px 14px;padding-top:16px;padding-bottom:16px;text-align:center}
  .strip-years{font-size:30px}
  .strip-years small{font-size:16px}
  .strip-slogan{font-size:14px;letter-spacing:2px}
  .strip-core{font-size:16px;letter-spacing:1px;width:100%}
  .strip-core i{font-size:20px}
  .hero-strip .tel-big{font-size:18px;width:100%;text-align:center}
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .prod-card .pc-body{padding:12px}
  .prod-card h3{font-size:14px}
  .prod-card p{display:none}
  .app-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .case-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .tech-list{grid-template-columns:1fr}
  .inst-points{grid-template-columns:1fr 1fr;gap:10px}
  .fact-row{grid-template-columns:1fr;gap:10px}
  .data-band .container{grid-template-columns:repeat(2,1fr);gap:22px 12px}
  .gallery{grid-template-columns:1fr}
  .team-strip{grid-template-columns:repeat(2,1fr);gap:10px}
  .cta-band .container{flex-direction:column;align-items:flex-start}
  .cta-band .cta-tel{font-size:22px}
  .pd-info .pd-title{font-size:23px}
  .pd-kv{grid-template-columns:1fr}
  .message-form{padding:20px 16px}
  .site-footer .ft-main{grid-template-columns:1fr;gap:24px;padding:40px 0 28px}
  .sec-head{margin-bottom:32px}
  .spec-table th,.spec-table td{padding:9px 10px;font-size:13px}
  .mobile-callbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:120;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(10,31,68,.12)}
  .mobile-callbar a{flex:1;text-align:center;padding:13px 8px;font-size:15px;font-weight:800}
  .mobile-callbar .mc-call{color:#fff;background:linear-gradient(120deg,var(--accent),#ff8a3d)}
  .mobile-callbar .mc-message{color:var(--primary);background:#fff}
  .back-top{bottom:76px}
  .site-footer{padding-bottom:58px}
  .hero-strip .tel-big{margin-bottom:4px}
}

.hero-kpis{display:flex;align-items:center;gap:22px;margin:14px 0 16px;flex-wrap:wrap}
.hero-kpis div{display:flex;flex-direction:column;gap:2px}
.hero-kpis b{font-size:24px;font-weight:800;color:#ffb27a;line-height:1.1}
.hero-kpis span{font-size:13px;color:#9fb2d4}
.hero-kpis .sep{width:1px;height:38px;background:rgba(255,255,255,.18)}

.spec-strip{background:#fff;padding:26px 0;border-bottom:1px solid var(--line)}
.spec-strip .spec-head{text-align:center;margin-bottom:26px}
.spec-strip .spec-head .kicker{color:var(--accent);font-weight:700;letter-spacing:2px;font-size:13px}
.spec-strip .spec-head h2{font-size:26px;color:var(--ink);margin-top:6px}
.spec-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.spec-item{background:#f6f8fc;border:1px solid #e6ecf5;border-radius:12px;padding:18px 14px;text-align:center;transition:.25s}
.spec-item:hover{border-color:var(--accent);transform:translateY(-3px)}
.spec-v{font-size:17px;font-weight:800;color:var(--primary);line-height:1.3}
.spec-k{font-size:13px;color:var(--muted);margin-top:6px}
.spec-note{text-align:center;color:var(--muted);font-size:13.5px;margin-top:22px}
@media(max-width:900px){.spec-grid{grid-template-columns:repeat(2,1fr)}}