/* Generated by Trae Work — 艾普达电缆官网样式 */
:root{
  --blue-900:#0a2653; --blue-800:#0e3a8a; --blue-700:#1250b5; --blue-100:#e8f0fc;
  --orange:#f2762e; --orange-dark:#d85f1a;
  --ink:#1c2430; --muted:#5b6675; --line:#e3e8f0;
  --bg:#ffffff; --bg-soft:#f5f8fc; --bg-dark:#0a2653;
  --radius:10px;
  --shadow:0 6px 24px rgba(10,38,83,.10);
  --shadow-lg:0 14px 44px rgba(10,38,83,.16);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","WenQuanYi Micro Hei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1200px,92%);margin:0 auto}
.section{padding:72px 0}
.section--soft{background:var(--bg-soft)}
.section--dark{background:linear-gradient(135deg,var(--blue-900),var(--blue-800));color:#fff}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .kicker{display:inline-block;color:var(--orange);font-weight:700;letter-spacing:.2em;font-size:13px;text-transform:uppercase}
.sec-head h2{font-size:32px;color:var(--blue-900);margin:6px 0 10px}
.section--dark .sec-head h2{color:#fff}
.sec-head p{color:var(--muted);max-width:720px;margin:0 auto}
.section--dark .sec-head p{color:rgba(255,255,255,.75)}
.sec-head .bar{width:56px;height:4px;background:var(--orange);border-radius:2px;margin:14px auto 0}

/* 顶栏 */
.topbar{background:var(--blue-900);color:rgba(255,255,255,.85);font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar span{margin-left:22px}
.topbar b{color:#fff;font-weight:600}

/* 导航 */
.navbar{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 14px rgba(10,38,83,.08)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:44px;height:44px;border-radius:8px;background:linear-gradient(135deg,var(--blue-800),var(--blue-700));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:.5px}
.brand-logo-img{width:48px;height:48px;object-fit:contain;flex:0 0 auto}
.login-logo{width:84px;height:84px;object-fit:contain;margin:0 auto 14px;display:block}
.side-logo{display:flex;align-items:center;gap:10px}
.side-logo img{width:38px;height:38px;object-fit:contain;background:#fff;border-radius:8px;padding:2px}
.brand-name{font-size:20px;font-weight:800;color:var(--blue-900);line-height:1.2}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.18em}
.nav-menu{display:flex;gap:6px;align-items:center}
.nav-menu a{padding:8px 16px;border-radius:6px;font-size:15px;color:var(--ink);font-weight:500}
.nav-menu a:hover{color:var(--blue-700);background:var(--blue-100)}
.nav-menu a.active{color:#fff;background:var(--blue-800)}
.nav-menu a.nav-admin{border:1px solid var(--line);color:var(--muted)}
.nav-toggle{display:none;background:none;border:0;font-size:26px;color:var(--blue-900);cursor:pointer}

/* Hero */
.hero{position:relative;min-height:560px;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:url("../img/hero-factory.jpg") center/cover no-repeat}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,38,83,.92) 20%,rgba(10,38,83,.55) 60%,rgba(14,58,138,.25))}
.hero .container{position:relative;z-index:2;padding:90px 0}
.hero-tag{display:inline-block;border:1px solid rgba(255,255,255,.4);padding:6px 16px;border-radius:999px;font-size:13px;letter-spacing:.2em;margin-bottom:20px}
.hero h1{font-size:46px;line-height:1.3;font-weight:800;max-width:640px}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero p{margin:18px 0 32px;max-width:560px;color:rgba(255,255,255,.85);font-size:17px}
.btn{display:inline-block;padding:13px 34px;border-radius:6px;font-weight:600;font-size:15px;transition:.25s;border:0;cursor:pointer}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark)}
.btn-ghost{border:1px solid rgba(255,255,255,.6);color:#fff;margin-left:14px;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-blue{background:var(--blue-800);color:#fff}
.btn-blue:hover{background:var(--blue-700)}

/* 数据条 */
.stats{background:var(--blue-800);color:#fff;padding:38px 0}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat b{display:block;font-size:38px;font-weight:800;color:#fff}
.stat b i{font-style:normal;color:var(--orange);font-size:24px;margin-left:2px}
.stat span{font-size:14px;color:rgba(255,255,255,.75)}

/* 关于摘要 */
.about-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.about-grid img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.about-txt h3{font-size:30px;color:var(--blue-900);margin-bottom:16px}
.about-txt p{color:var(--muted);margin-bottom:14px}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0 26px}
.about-points li{background:var(--bg-soft);border-left:3px solid var(--orange);padding:10px 14px;font-size:14px;border-radius:0 6px 6px 0}

/* 产品卡 */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.prod-card .pic{height:170px;overflow:hidden}
.prod-card .pic img{width:100%;height:100%;object-fit:cover;transition:.5s}
.prod-card:hover .pic img{transform:scale(1.06)}
.prod-card .body{padding:18px 18px 20px;flex:1;display:flex;flex-direction:column}
.prod-card .idx{color:var(--orange);font-weight:800;font-size:13px;letter-spacing:.1em}
.prod-card h3{font-size:18px;color:var(--blue-900);margin:4px 0 6px}
.prod-card p{font-size:13.5px;color:var(--muted);flex:1}
.prod-card a.more{margin-top:12px;font-size:13.5px;color:var(--blue-700);font-weight:600}
.prod-card a.more:hover{color:var(--orange)}

/* 硬实力 */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px 24px}
.feature h3{font-size:18px;margin:14px 0 8px;color:#fff}
.feature p{font-size:14px;color:rgba(255,255,255,.72)}
.feature .ico{width:48px;height:48px;border-radius:10px;background:var(--orange);display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;font-weight:800}

/* 证书 */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cert-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;cursor:pointer}
.cert-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.cert-card .pic{height:230px;overflow:hidden;background:var(--bg-soft);display:flex;align-items:center;justify-content:center}
.cert-card .pic img{width:100%;height:100%;object-fit:cover;object-position:top}
.cert-card .body{padding:14px 16px}
.cert-card h3{font-size:15.5px;color:var(--blue-900)}
.cert-card p{font-size:12.5px;color:var(--muted);margin-top:4px;line-height:1.6}
.cert-badge{display:inline-block;background:var(--blue-100);color:var(--blue-800);font-size:11px;padding:2px 10px;border-radius:999px;margin-bottom:6px;font-weight:600}

/* 合作伙伴 */
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.partner{background:#fff;border:1px solid var(--line);border-radius:var(--radius);height:110px;display:flex;align-items:center;justify-content:center;padding:18px;transition:.3s}
.partner:hover{box-shadow:var(--shadow)}
.partner img{max-height:64px;max-width:100%;object-fit:contain}

/* 新闻 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.3s;display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.news-card .date{color:var(--orange);font-size:13px;font-weight:700}
.news-card h3{font-size:17px;color:var(--blue-900);margin:8px 0;flex:0}
.news-card p{font-size:14px;color:var(--muted);flex:1}
.news-card a{margin-top:14px;font-size:13.5px;color:var(--blue-700);font-weight:600}
.news-list-item{display:flex;gap:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;margin-bottom:16px;transition:.3s}
.news-list-item:hover{box-shadow:var(--shadow)}
.news-list-item .datebox{flex:0 0 84px;text-align:center;border-right:1px dashed var(--line);padding-right:20px}
.news-list-item .datebox b{display:block;font-size:26px;color:var(--blue-800)}
.news-list-item .datebox span{font-size:12px;color:var(--muted)}
.news-list-item h3{font-size:17px;color:var(--blue-900);margin-bottom:6px}
.news-list-item p{font-size:14px;color:var(--muted)}

/* CTA */
.cta{background:linear-gradient(120deg,var(--blue-900),var(--blue-700));color:#fff;padding:56px 0;text-align:center}
.cta h2{font-size:28px;margin-bottom:10px}
.cta p{color:rgba(255,255,255,.8);margin-bottom:24px}

/* 页头横幅（子页） */
.page-banner{position:relative;padding:86px 0;color:#fff;background:linear-gradient(120deg,rgba(10,38,83,.94),rgba(14,58,138,.82)),url("../img/hero-building.jpg") center/cover}
.page-banner h1{font-size:36px}
.page-banner p{color:rgba(255,255,255,.8);margin-top:8px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.65);margin-top:14px}
.breadcrumb a:hover{color:#fff}

/* 时间线/文化 */
.culture-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.culture{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;border-top:4px solid var(--orange)}
.culture h3{color:var(--blue-900);font-size:18px;margin-bottom:10px}
.culture p{font-size:14px;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;position:relative}
.step::before{counter-increment:step;content:"0" counter(step);position:absolute;top:22px;right:24px;font-size:34px;font-weight:800;color:var(--blue-100)}
.step h3{color:var(--blue-900);font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}

/* 产品详情卡（产品页） */
.prod-detail{display:grid;grid-template-columns:1fr 1.15fr;gap:44px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:34px}
.prod-detail .pic{min-height:320px}
.prod-detail .pic img{width:100%;height:100%;object-fit:cover}
.prod-detail .body{padding:36px 38px}
.prod-detail .idx{color:var(--orange);font-weight:800;letter-spacing:.12em;font-size:13px}
.prod-detail h2{color:var(--blue-900);font-size:26px;margin:6px 0 14px}
.prod-detail h4{color:var(--blue-800);font-size:15px;margin:16px 0 6px;padding-left:10px;border-left:3px solid var(--orange)}
.prod-detail p{font-size:14.5px;color:var(--muted)}
.prod-detail .case{display:inline-block;margin-top:16px;background:var(--blue-100);color:var(--blue-800);font-size:13px;padding:6px 14px;border-radius:6px;font-weight:600}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px}
.contact-info .item{display:flex;gap:16px;margin-bottom:22px}
.contact-info .ico{flex:0 0 46px;width:46px;height:46px;border-radius:10px;background:var(--blue-100);color:var(--blue-800);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700}
.contact-info h4{color:var(--blue-900);font-size:16px}
.contact-info p{color:var(--muted);font-size:14.5px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.form-card h3{color:var(--blue-900);margin-bottom:18px;font-size:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--ink);margin-bottom:6px;font-weight:600}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:6px;padding:11px 13px;font-size:14.5px;font-family:var(--font);outline:none;transition:.2s;background:#fff}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue-700);box-shadow:0 0 0 3px rgba(18,80,181,.12)}
.form-tip{font-size:13px;color:var(--muted);margin-top:10px}
.form-ok{display:none;background:#e9f8ee;border:1px solid #bfe8c9;color:#1c7c3c;padding:12px 16px;border-radius:6px;margin-top:14px;font-size:14px}

/* 页脚 */
.footer{background:#081c3d;color:rgba(255,255,255,.72);padding:56px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer li{margin-bottom:9px}
.footer a:hover{color:var(--orange)}
.footer-brand{font-size:19px;font-weight:800;color:#fff;margin-bottom:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:12.5px;color:rgba(255,255,255,.45)}

/* 证书灯箱 */
.lightbox{position:fixed;inset:0;background:rgba(5,15,35,.88);z-index:100;display:none;align-items:center;justify-content:center;padding:30px}
.lightbox.open{display:flex}
.lightbox img{max-width:min(92vw,760px);max-height:88vh;border-radius:8px;background:#fff}
.lightbox .close{position:absolute;top:22px;right:30px;color:#fff;font-size:38px;cursor:pointer;line-height:1}

/* ============ 后台管理 ============ */
.admin-body{background:#f2f5fa;min-height:100vh}
.admin-login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue-900),var(--blue-700))}
.login-card{background:#fff;border-radius:14px;padding:44px 42px;width:min(420px,92%);box-shadow:var(--shadow-lg)}
.login-card h1{font-size:22px;color:var(--blue-900);text-align:center}
.login-card .sub{text-align:center;color:var(--muted);font-size:13px;margin:6px 0 26px}
.login-hint{margin-top:16px;background:var(--blue-100);border-radius:8px;padding:10px 14px;font-size:12.5px;color:var(--blue-800);line-height:1.7}
.login-err{display:none;color:#c0392b;font-size:13px;margin-top:8px}
.admin-layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.admin-side{background:var(--blue-900);color:#fff;padding:24px 0;position:sticky;top:0;height:100vh}
.admin-side .logo{padding:0 22px 20px;border-bottom:1px solid rgba(255,255,255,.12);font-weight:800;font-size:17px}
.admin-side .logo span{display:block;font-size:11px;font-weight:400;color:rgba(255,255,255,.55);letter-spacing:.15em;margin-top:2px}
.admin-side nav a{display:block;padding:12px 22px;color:rgba(255,255,255,.75);font-size:14.5px;border-left:3px solid transparent}
.admin-side nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.admin-side nav a.active{background:rgba(242,118,46,.18);border-left-color:var(--orange);color:#fff}
.admin-main{padding:28px 32px}
.admin-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.admin-topbar h2{color:var(--blue-900);font-size:22px}
.admin-topbar .acts a{margin-left:14px;font-size:13.5px;color:var(--muted)}
.admin-topbar .acts a:hover{color:var(--orange)}
.panel{display:none}
.panel.active{display:block}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 2px 10px rgba(10,38,83,.04)}
.card h3{color:var(--blue-900);font-size:17px;margin-bottom:16px}
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:24px}
.stat-card{background:#fff;border-radius:var(--radius);padding:22px;border:1px solid var(--line)}
.stat-card b{display:block;font-size:32px;color:var(--blue-800)}
.stat-card span{color:var(--muted);font-size:13.5px}
.stat-card.unread b{color:var(--orange)}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{background:var(--bg-soft);text-align:left;padding:10px 12px;color:var(--muted);font-weight:600;border-bottom:1px solid var(--line)}
.table td{padding:12px;border-bottom:1px solid var(--line);vertical-align:middle}
.table tr:hover td{background:#fafcfe}
.table img.thumb{width:56px;height:40px;object-fit:cover;border-radius:4px;border:1px solid var(--line)}
.tag{display:inline-block;font-size:11.5px;padding:2px 10px;border-radius:999px}
.tag-on{background:#e9f8ee;color:#1c7c3c}
.tag-off{background:#f3f4f6;color:#6b7280}
.tag-new{background:#fdeae0;color:var(--orange-dark)}
.btn-sm{padding:5px 13px;border-radius:5px;font-size:12.5px;border:1px solid var(--line);background:#fff;cursor:pointer;margin-right:6px}
.btn-sm:hover{border-color:var(--blue-700);color:var(--blue-700)}
.btn-sm.danger:hover{border-color:#c0392b;color:#c0392b}
.btn-sm.primary{background:var(--blue-800);color:#fff;border-color:var(--blue-800)}
.btn-sm.primary:hover{background:var(--blue-700)}
.modal{position:fixed;inset:0;background:rgba(5,15,35,.55);z-index:200;display:none;align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto}
.modal.open{display:flex}
.modal-card{background:#fff;border-radius:12px;width:min(680px,100%);padding:30px 32px}
.modal-card h3{color:var(--blue-900);margin-bottom:18px}
.modal-acts{display:flex;justify-content:flex-end;gap:12px;margin-top:8px}
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%);background:var(--blue-900);color:#fff;padding:11px 26px;border-radius:8px;font-size:14px;z-index:300;display:none;box-shadow:var(--shadow-lg)}
.toast.show{display:block}

/* 图片上传组件 */
.img-upload{border:1px dashed var(--line);border-radius:8px;padding:14px;text-align:center;background:var(--bg-soft)}
.img-upload .preview{max-width:100%;max-height:180px;object-fit:contain;border-radius:6px;margin-bottom:10px;background:#fff}
.img-upload .preview.placeholder{height:100px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;border:1px dashed var(--line);border-radius:6px}
.img-upload .upload-btn{display:inline-block;padding:8px 20px;background:var(--blue-100);color:var(--blue-800);border-radius:6px;font-size:13px;cursor:pointer;font-weight:600;transition:.2s}
.img-upload .upload-btn:hover{background:var(--blue-700);color:#fff}
.img-upload input[type=file]{display:none}
.img-upload .url-row{margin-top:8px}
.img-upload .url-row input{width:100%;border:1px solid var(--line);border-radius:6px;padding:8px 10px;font-size:13px;font-family:var(--font);outline:none}
.img-upload .url-row input:focus{border-color:var(--blue-700)}
.img-upload .hint{font-size:12px;color:var(--muted);margin-top:6px}

/* 列表编辑器（统计数据、品控、文化等） */
.list-editor .item{border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin-bottom:12px;background:var(--bg-soft)}
.list-editor .item-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.list-editor .item-head b{color:var(--blue-900);font-size:14px}
.list-editor .item-head .acts{display:flex;gap:6px}
.list-editor .item input,.list-editor .item textarea{width:100%;border:1px solid var(--line);border-radius:6px;padding:8px 10px;font-size:13.5px;font-family:var(--font);outline:none;margin-bottom:6px;background:#fff}
.list-editor .item input:focus,.list-editor .item textarea:focus{border-color:var(--blue-700)}
.list-editor .row2{display:grid;grid-template-columns:1fr 80px;gap:8px}
.list-editor .row2 input{margin-bottom:0}
.sub-section{margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.sub-section:last-child{border-bottom:0;margin-bottom:0}
.sub-section h3{color:var(--blue-900);font-size:16px;margin-bottom:14px;display:flex;justify-content:space-between;align-items:center}
.msg-unread{font-weight:600}
.msg-unread td:first-child::before{content:"●";color:var(--orange);margin-right:6px;font-size:10px;vertical-align:2px}

/* 响应式 */
@media(max-width:1000px){
  .prod-grid,.cert-grid,.partner-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid,.culture-grid,.steps,.news-grid{grid-template-columns:1fr 1fr}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .prod-detail{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats .container{grid-template-columns:repeat(2,1fr);gap:28px}
  .stat-cards{grid-template-columns:repeat(2,1fr)}
  .admin-layout{grid-template-columns:1fr}
  .admin-side{position:static;height:auto}
}
@media(max-width:640px){
  .nav-menu{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px;box-shadow:var(--shadow)}
  .nav-menu.open{display:flex}
  .nav-toggle{display:block}
  .hero h1{font-size:30px}
  .hero{min-height:460px}
  .prod-grid,.cert-grid,.partner-grid,.feature-grid,.culture-grid,.steps,.news-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .sec-head h2{font-size:25px}
  .page-banner h1{font-size:27px}
}