/* ============================================================
   杭州壹壹科技有限公司 官网原型样式
   品牌色：科技深蓝 #0B3D91 / 民生智造绿 #1A8A5A / 强调橙 #C95A1E
   ============================================================ */
:root{
  --blue:#0B3D91; --blue-d:#082C6B; --blue-l:#1E5BC6;
  --green:#1A8A5A; --green-l:#E8F4EE;
  --orange:#C95A1E; --orange-l:#FDF0E8;
  --bg-blue:#EAF1FA; --bg-blue-d:#DCE8F7;
  --ink:#1A2233; --ink-2:#3A4252; --grey:#6A7385; --grey-l:#9AA3B2;
  --line:#E4E9F2; --white:#FFFFFF;
  --max:1200px; --radius:10px; --radius-s:6px;
  --shadow:0 4px 20px rgba(11,61,145,.08); --shadow-h:0 10px 36px rgba(11,61,145,.16);
  --font:"Microsoft YaHei","PingFang SC","Source Han Sans SC",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:#fff;line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- 顶部公告条 ---------- */
.topbar{background:var(--blue-d);color:#cdd9f0;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px}
.topbar a{color:#fff}
.topbar .tb-r span{margin-left:20px}
.topbar .tb-r .icp{opacity:.8}

/* ---------- 导航 ---------- */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(0,0,0,.02)}
.nav{display:flex;align-items:center;height:72px;gap:40px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--blue);white-space:nowrap}
.logo img{height:40px;width:auto;display:block}
.logo span{display:inline-flex;align-items:center;height:40px;line-height:1;font-weight:800;font-size:20px;color:var(--blue)}
.logo .mark{width:38px;height:38px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--blue-l));display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;letter-spacing:-1px;box-shadow:var(--shadow)}
.logo .en{font-size:11px;color:var(--grey);font-weight:600;letter-spacing:2px;display:block;margin-top:-2px}
.menu{display:flex;gap:6px;margin-left:auto}
.menu a{padding:8px 16px;border-radius:var(--radius-s);font-size:15px;color:var(--ink-2);font-weight:500;transition:.2s;position:relative}
.menu a:hover{color:var(--blue);background:var(--bg-blue)}
.menu a.on{color:var(--blue);background:var(--bg-blue);font-weight:700}
.nav-cta{margin-left:8px}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;margin-left:auto}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:var(--radius-s);font-size:15px;font-weight:600;cursor:pointer;transition:.25s;border:none;font-family:inherit}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-d);transform:translateY(-2px);box-shadow:var(--shadow-h)}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:#B14E18;transform:translateY(-2px);box-shadow:0 10px 30px rgba(201,90,30,.3)}
.btn-outline{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-white{background:#fff;color:var(--blue)}
.btn-white:hover{transform:translateY(-2px);box-shadow:var(--shadow-h)}
.btn-lg{padding:15px 34px;font-size:16px}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0}
.section.tight{padding:56px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 48px}
.sec-head .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;color:var(--green);text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-size:32px;font-weight:800;color:var(--ink);line-height:1.3}
.sec-head h2 .hl{color:var(--blue)}
.sec-head p{color:var(--grey);margin-top:14px;font-size:16px}
.sec-head.left{text-align:left;margin-left:0}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(125deg,#082C6B 0%,#0B3D91 45%,#1E5BC6 100%);color:#fff;overflow:hidden;padding:90px 0 100px}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 30%,rgba(255,255,255,.08) 0,transparent 40%),radial-gradient(circle at 80% 70%,rgba(26,138,90,.18) 0,transparent 45%)}
.hero::after{content:"";position:absolute;right:-100px;top:-100px;width:480px;height:480px;border:1px solid rgba(255,255,255,.12);border-radius:50%}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:6px 16px;border-radius:30px;font-size:13px;margin-bottom:24px}
.hero h1{font-size:46px;font-weight:800;line-height:1.25;margin-bottom:18px}
.hero h1 .g{color:#5FD9A0}
.hero .sub{font-size:18px;color:#cfe0f7;margin-bottom:32px;max-width:540px;line-height:1.8}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,.18)}
.hero-stats .st b{font-size:30px;font-weight:800;display:block}
.hero-stats .st span{font-size:13px;color:#aecbf0}
/* hero 右侧双轮卡片 */
.dual-card{display:flex;flex-direction:column;gap:16px}
.dual-card .dc{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:22px 24px;backdrop-filter:blur(6px);transition:.25s}
.dual-card .dc:hover{background:rgba(255,255,255,.16);transform:translateX(-6px)}
.dual-card .dc .t{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:6px}
.dual-card .dc .t .dot{width:10px;height:10px;border-radius:50%}
.dual-card .dc.blue .dot{background:#5FA8FF}
.dual-card .dc.green .dot{background:#5FD9A0}
.dual-card .dc p{font-size:13px;color:#cfe0f7;line-height:1.7}

/* ---------- 双轮驱动概览 ---------- */
.dual-overview{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.duo{border-radius:16px;padding:38px 34px;position:relative;overflow:hidden;transition:.3s;min-height:300px}
.duo:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.duo.blue{background:linear-gradient(150deg,var(--bg-blue) 0%,#fff 100%);border:1px solid var(--bg-blue-d)}
.duo.green{background:linear-gradient(150deg,var(--green-l) 0%,#fff 100%);border:1px solid #cfe8dc}
.duo .tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:700;margin-bottom:14px}
.duo.blue .tag{background:var(--blue);color:#fff}
.duo.green .tag{background:var(--green);color:#fff}
.duo h3{font-size:23px;font-weight:800;margin-bottom:12px}
.duo.blue h3{color:var(--blue)}
.duo.green h3{color:var(--green)}
.duo p{color:var(--grey);font-size:14px;margin-bottom:20px;line-height:1.8}
.duo ul{display:grid;grid-template-columns:1fr 1fr;gap:8px 16px}
.duo ul li{font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:7px}
.duo.blue ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue-l)}
.duo.green ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green)}
.duo .more{display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-size:14px;font-weight:700}
.duo.blue .more{color:var(--blue)}
.duo.green .more{color:var(--green)}

/* ---------- 核心优势 ---------- */
.bg-grey{background:#F6F8FC}
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px 24px;text-align:center;transition:.25s}
.adv:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:transparent}
.adv .ic{width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:26px}
.adv .ic.b{background:var(--bg-blue);color:var(--blue)}
.adv .ic.g{background:var(--green-l);color:var(--green)}
.adv .ic.o{background:var(--orange-l);color:var(--orange)}
.adv h4{font-size:17px;font-weight:700;margin-bottom:8px}
.adv p{font-size:13px;color:var(--grey);line-height:1.7}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case{border-radius:14px;overflow:hidden;background:#fff;border:1px solid var(--line);transition:.25s}
.case:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:transparent}
.case .ph{height:180px;position:relative;display:flex;align-items:flex-end;padding:18px;color:#fff}
.case .ph.b1{background:linear-gradient(135deg,#0B3D91,#1E5BC6)}
.case .ph.b2{background:linear-gradient(135deg,#1A8A5A,#2EB377)}
.case .ph.b3{background:linear-gradient(135deg,#C95A1E,#E8853D)}
.case .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.case .ph::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(0,0,0,.38));z-index:1}
.case .ph .lbl{position:relative;z-index:2;font-size:12px;background:rgba(255,255,255,.22);padding:3px 10px;border-radius:20px;backdrop-filter:blur(4px)}
.case .body{padding:24px 24px 22px}
.case .body h4{font-size:18px;font-weight:700;margin-bottom:8px}
.case .body p{font-size:13px;color:var(--grey);line-height:1.7;margin-bottom:14px}
.case .body .meta{display:flex;gap:8px;flex-wrap:wrap}
.case .body .meta span{font-size:12px;color:var(--blue);background:var(--bg-blue);padding:3px 10px;border-radius:6px}

/* ---------- 资质滚动 ---------- */
.qual{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.qual .q{flex:1 1 160px;max-width:180px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px 16px;text-align:center}
.qual .q .ic{font-size:30px;margin-bottom:10px}
.qual .q h5{font-size:14px;font-weight:700}
.qual .q p{font-size:12px;color:var(--grey-l);margin-top:4px}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
.news{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.news:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:transparent}
.news.feat .ph{height:200px;background:linear-gradient(135deg,#0B3D91,#1E5BC6);display:flex;align-items:center;justify-content:center;color:#fff;font-size:40px}
.news .ph{height:140px;background:var(--bg-blue);display:flex;align-items:center;justify-content:center;font-size:32px;color:var(--blue)}
.news .ph.img{padding:0;overflow:hidden}
.news .ph.img img{width:100%;height:100%;object-fit:cover;display:block}
.news .body{padding:16px 22px 20px;flex:1;display:flex;flex-direction:column}
.news .date{font-size:12px;color:var(--grey-l);margin-bottom:8px}
.news h4{font-size:16px;font-weight:700;margin-bottom:8px;line-height:1.5}
.news.feat h4{font-size:19px}
.news p{font-size:13px;color:var(--grey);line-height:1.7;flex:1}
.news .tag{display:inline-block;font-size:12px;color:var(--green);margin-top:12px;font-weight:600}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--blue-d),var(--blue));color:#fff;border-radius:18px;padding:50px 56px;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-60px;bottom:-60px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.06)}
.cta-band h3{font-size:28px;font-weight:800;margin-bottom:8px}
.cta-band p{color:#cfe0f7;font-size:15px}
.cta-band .ph{font-size:20px;font-weight:800;margin-top:6px}

/* ---------- 悬浮快捷 ---------- */
.float-bar{position:fixed;right:18px;bottom:80px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-bar a{width:54px;height:54px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;font-weight:600;box-shadow:var(--shadow-h);transition:.25s}
.float-bar a:hover{transform:scale(1.08)}
.float-bar .tel{background:var(--orange);color:#fff}
.float-bar .msg{background:var(--blue);color:#fff}
.float-bar .top{background:#fff;color:var(--ink-2);border:1px solid var(--line)}

/* ---------- 页脚 ---------- */
.footer{background:#0E1726;color:#9BA8C0;padding:60px 0 0}
.footer .grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer h5{color:#fff;font-size:16px;margin-bottom:18px;font-weight:700}
.footer .f-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-weight:800;font-size:19px}
.footer .f-logo img{height:38px;width:auto;background:#fff;border-radius:9px;padding:5px;box-sizing:border-box;display:block}
.footer .f-logo .mark{width:38px;height:38px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--blue-l));display:flex;align-items:center;justify-content:center;font-size:14px}
.footer p{font-size:13px;line-height:1.9;margin-bottom:8px}
.footer ul li{font-size:13px;margin-bottom:10px}
.footer ul li a:hover{color:#fff}
.footer .contact li{display:flex;gap:8px;align-items:flex-start}
.footer .contact .ic{color:var(--blue-l);font-size:15px;margin-top:3px}
.footer .qr{width:110px;height:110px;background:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#888;font-size:11px;margin-top:8px;overflow:hidden;padding:6px;box-sizing:border-box}
.footer .qr img{width:100%;height:100%;object-fit:contain;display:block}
.footer .copy{padding:22px 0;display:flex;justify-content:space-between;align-items:center;font-size:13px;flex-wrap:wrap;gap:10px}
.footer .copy a{color:#7A8AA8}
.footer .copy a:hover{color:#fff}

/* ---------- 内页通用 ---------- */
.page-hero{background:linear-gradient(120deg,#082C6B,#0B3D91 60%,#1E5BC6);color:#fff;padding:70px 0 64px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,rgba(255,255,255,.1),transparent 40%)}
.page-hero .wrap{position:relative;z-index:2}
.page-hero .crumb{font-size:13px;color:#aecbf0;margin-bottom:16px}
.page-hero .crumb a:hover{color:#fff}
.page-hero h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-hero .desc{font-size:16px;color:#cfe0f7;max-width:680px;line-height:1.8}

/* 子页 Tab */
.sub-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:36px;border-bottom:1px solid var(--line)}
.sub-tabs a{padding:14px 22px;font-size:15px;font-weight:600;color:var(--grey);border-bottom:3px solid transparent;margin-bottom:-1px;transition:.2s}
.sub-tabs a:hover{color:var(--blue)}
.sub-tabs a.on{color:var(--blue);border-bottom-color:var(--blue)}

/* 业务能力卡 */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cap{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px 30px;transition:.25s}
.cap:hover{transform:translateY(-5px);box-shadow:var(--shadow-h);border-color:transparent}
.cap .hd{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.cap .hd .ic{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}
.cap .hd .ic.b{background:var(--bg-blue);color:var(--blue)}
.cap .hd h4{font-size:19px;font-weight:800}
.cap .hd span{font-size:12px;color:var(--grey-l)}
.cap p{color:var(--grey);font-size:14px;line-height:1.8;margin-bottom:16px}
.cap ul li{font-size:14px;color:var(--ink-2);padding:6px 0;display:flex;gap:8px;align-items:flex-start}
.cap ul li::before{content:"✓";color:var(--green);font-weight:800;flex-shrink:0}

/* 产品卡 */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.prod{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;transition:.25s}
.prod:hover{transform:translateY(-5px);box-shadow:var(--shadow-h);border-color:transparent}
.prod .ph{height:170px;display:flex;align-items:center;justify-content:center;font-size:46px;color:#fff}
.prod .ph.g1{background:linear-gradient(135deg,#1A8A5A,#2EB377)}
.prod .ph.g2{background:linear-gradient(135deg,#0B3D91,#1E5BC6)}
.prod .ph.g3{background:linear-gradient(135deg,#C95A1E,#E8853D)}
.prod .ph.g4{background:linear-gradient(135deg,#5B3FA8,#8467D6)}
.prod .ph.g5{background:linear-gradient(135deg,#0E7C7B,#16A5A3)}
.prod .ph.g6{background:linear-gradient(135deg,#B5453F,#D9675F)}
.prod .body{padding:20px 22px}
.prod .body h4{font-size:17px;font-weight:700;margin-bottom:6px}
.prod .body p{font-size:13px;color:var(--grey);line-height:1.7;margin-bottom:12px}
.prod .body .feats{display:flex;flex-wrap:wrap;gap:6px}
.prod .body .feats span{font-size:11px;background:var(--green-l);color:var(--green);padding:3px 9px;border-radius:6px;font-weight:600}

/* 时间线 */
.timeline{position:relative;padding-left:32px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--bg-blue-d)}
.timeline .tl{position:relative;padding-bottom:32px}
.timeline .tl:last-child{padding-bottom:0}
.timeline .tl::before{content:"";position:absolute;left:-28px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--blue);border:3px solid #fff;box-shadow:0 0 0 2px var(--blue)}
.timeline .tl .yr{font-size:14px;font-weight:800;color:var(--blue)}
.timeline .tl h4{font-size:16px;font-weight:700;margin:4px 0 6px}
.timeline .tl p{font-size:13px;color:var(--grey);line-height:1.7}

/* 生态图 */
.eco{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;text-align:center}
.eco .layer{border-radius:14px;padding:30px 22px}
.eco .layer.l1{background:var(--bg-blue);border:1px solid var(--bg-blue-d)}
.eco .layer.l2{background:var(--green-l);border:1px solid #cfe8dc}
.eco .layer.l3{background:var(--orange-l);border:1px solid #f5dac8}
.eco .layer .ic{font-size:34px;margin-bottom:12px}
.eco .layer h4{font-size:18px;font-weight:800;margin-bottom:8px}
.eco .layer.l1 h4{color:var(--blue)}
.eco .layer.l2 h4{color:var(--green)}
.eco .layer.l3 h4{color:var(--orange)}
.eco .layer p{font-size:13px;color:var(--grey);line-height:1.7;margin-bottom:14px}
.eco .layer ul li{font-size:13px;color:var(--ink-2);padding:4px 0}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info .ci{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-info .ci .ic{width:46px;height:46px;border-radius:12px;background:var(--bg-blue);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.contact-info .ci h5{font-size:13px;color:var(--grey);margin-bottom:4px}
.contact-info .ci p{font-size:17px;font-weight:700;color:var(--ink)}
.map-box{border-radius:14px;overflow:hidden;border:1px solid var(--line);height:280px;background:var(--bg-blue);display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:15px;flex-direction:column;gap:8px}
.form-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.form-field label .req{color:var(--orange)}
.form-field input,.form-field select,.form-field textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius-s);font-size:14px;font-family:inherit;transition:.2s;background:#fff}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--bg-blue)}
.form-field textarea{resize:vertical;min-height:90px}

/* 解决方案行 */
.sol-list .sol-row{display:grid;grid-template-columns:120px 1fr;gap:30px;padding:36px 0;border-bottom:1px solid var(--line);align-items:start}
.sol-list .sol-row:last-child{border-bottom:none}
.sol-list .sol-row .num{font-size:42px;font-weight:800;color:var(--bg-blue-d);line-height:1}
.sol-list .sol-row h4{font-size:21px;font-weight:800;margin-bottom:6px}
.sol-list .sol-row .tag{display:inline-block;font-size:12px;background:var(--bg-blue);color:var(--blue);padding:3px 10px;border-radius:6px;margin-bottom:14px;font-weight:600}
.sol-list .sol-row p{color:var(--grey);font-size:14px;line-height:1.8;margin-bottom:14px}
.sol-list .sol-row .pts{display:flex;flex-wrap:wrap;gap:8px}
.sol-list .sol-row .pts span{font-size:13px;background:#f6f8fc;color:var(--ink-2);padding:5px 12px;border-radius:6px}

/* 价值观条 */
.value-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.value-bar .v{text-align:center;padding:30px 20px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.value-bar .v .ic{font-size:34px;margin-bottom:12px}
.value-bar .v h4{font-size:17px;font-weight:800;margin-bottom:8px;color:var(--blue)}
.value-bar .v p{font-size:13px;color:var(--grey);line-height:1.7}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero .wrap{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .dual-overview,.adv-grid,.case-grid,.news-grid,.prod-grid,.cap-grid,.contact-grid,.eco,.value-bar{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr}
  .footer .grid{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;text-align:center;padding:36px}
  .sol-list .sol-row{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
}
@media(max-width:680px){
  .menu,.nav-cta{display:none}
  .burger{display:flex}
  .menu.open{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;background:#fff;padding:16px 24px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .menu.open a{padding:12px 16px}
  .topbar .tb-r{display:none}
  .section{padding:56px 0}
  .sec-head h2{font-size:26px}
  .hero h1{font-size:28px}
  .hero-stats{gap:24px}
  .adv-grid{grid-template-columns:1fr}
  .footer .grid{grid-template-columns:1fr}
  .duo ul{grid-template-columns:1fr}
  .page-hero h1{font-size:28px}
}