:root{
  --blue:#12467b; --blue-d:#0c3257; --blue-l:#1e6ab0;
  --orange:#f28c28; --orange-d:#d9731a;
  --bg:#f5f7fa; --card:#ffffff; --text:#25313d; --muted:#66788a;
  --line:#e4eaf0; --radius:14px;
  --shadow:0 6px 24px rgba(18,70,123,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.7}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:13px 30px;border-radius:8px;font-size:16px;font-weight:600;transition:.25s;cursor:pointer;border:none}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-d);transform:translateY(-2px)}
.btn-ghost{border:2px solid rgba(255,255,255,.7);color:#fff;margin-left:14px}
.btn-ghost:hover{background:rgba(255,255,255,.15)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-d)}

/* 顶栏与导航 */
.topbar{background:var(--blue-d);color:#cfe0f0;font-size:13px;padding:7px 0}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center}
.topbar b{color:#ffd28f}
header.nav{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.05);position:sticky;top:0;z-index:99}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:46px;height:46px;background:linear-gradient(135deg,var(--blue),var(--blue-l));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:22px}
.logo h1{font-size:20px;color:var(--blue);letter-spacing:1px;line-height:1.2}
.logo small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}
nav.menu ul{display:flex;gap:30px}
nav.menu a{font-size:16px;font-weight:500;padding:26px 0;border-bottom:3px solid transparent;transition:.2s;display:inline-block}
nav.menu a:hover,nav.menu a.active{color:var(--orange);border-color:var(--orange)}
.nav-phone{display:flex;align-items:center;gap:8px;color:var(--orange);font-weight:700;font-size:18px}

/* 首屏：实拍大图 + 深蓝渐变遮罩 */
.hero{position:relative;background:linear-gradient(120deg,rgba(12,50,87,.93) 0%,rgba(18,70,123,.86) 55%,rgba(30,106,176,.78) 100%),url('images/hero-bg.jpg') center/cover no-repeat;color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;right:-140px;top:-140px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(242,140,40,.28),transparent 65%)}
.hero::after{content:"";position:absolute;left:-100px;bottom:-200px;width:420px;height:420px;border-radius:50%;border:60px solid rgba(255,255,255,.05)}
.hero .wrap{position:relative;padding:88px 20px 96px;display:flex;align-items:center;gap:60px}
.hero-text{flex:1.2}
.hero-tag{display:inline-block;background:rgba(242,140,40,.18);border:1px solid rgba(242,140,40,.55);color:#ffc27a;font-size:14px;padding:5px 16px;border-radius:30px;margin-bottom:22px;letter-spacing:2px}
.hero h2{font-size:44px;line-height:1.3;font-weight:800}
.hero h2 span{color:#ffb35c}
.hero p.sub{margin:20px 0 34px;font-size:17px;color:#d6e4f2;max-width:560px}
.hero-cta .phone-big{font-size:26px;font-weight:800;color:#ffd28f;margin-left:6px}
.hero-cards{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hero-card{background:rgba(255,255,255,.09);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:22px 20px;transition:.25s}
.hero-card:hover{background:rgba(255,255,255,.16);transform:translateY(-4px)}
.hero-card .num{font-size:15px;color:#ffb35c;font-weight:700;letter-spacing:1px}
.hero-card h3{font-size:17px;margin:6px 0 4px}
.hero-card p{font-size:13px;color:#c9d9e9;line-height:1.6}
.hero-sub{padding:46px 20px}

/* 板块头 */
section.sec{padding:84px 0}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head .en{font-size:13px;letter-spacing:5px;color:var(--orange);font-weight:700;text-transform:uppercase}
.sec-head h2{font-size:32px;margin-top:8px;color:var(--blue-d)}
.sec-head .bar{width:56px;height:4px;background:var(--orange);border-radius:2px;margin:16px auto 0}
.sec-head p{color:var(--muted);margin-top:14px}

/* 服务 */
.services{background:#fff}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;transition:.28s;position:relative;overflow:hidden}
.svc::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:0;background:var(--orange);transition:.3s}
.svc:hover{box-shadow:var(--shadow);transform:translateY(-6px)}
.svc:hover::after{width:100%}
.svc .ico{width:58px;height:58px;border-radius:12px;background:linear-gradient(135deg,#eaf2fb,#dcebfa);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:18px}
.svc h3{font-size:19px;color:var(--blue-d);margin-bottom:8px}
.svc p{font-size:14px;color:var(--muted)}
.svc .tag-line{margin-top:14px;font-size:12.5px;color:var(--blue-l);background:#f0f6fd;display:inline-block;padding:3px 10px;border-radius:20px}

/* 流程 */
.flow{background:linear-gradient(180deg,var(--bg),#eef3f8)}
.flow-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{background:#fff;border-radius:var(--radius);padding:30px 24px;text-align:center;border:1px solid var(--line);position:relative;transition:.25s}
.step:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.step .no{width:44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.step:nth-child(even) .no{background:var(--orange)}
.step h3{font-size:17px;color:var(--blue-d);margin-bottom:6px}
.step p{font-size:13px;color:var(--muted)}

/* 案例 */
.cases{background:#fff}
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.case{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--card);transition:.25s;display:flex;flex-direction:column}
.case:hover{box-shadow:var(--shadow);transform:translateY(-5px)}
.case .cover{height:112px;display:flex;align-items:center;justify-content:center;font-size:44px;background:linear-gradient(135deg,#dcebfa,#f2e8d9);overflow:hidden}
.case .cover img{width:100%;height:100%;object-fit:cover}
.case .info{padding:18px 20px 22px;flex:1}
.case h3{font-size:16px;color:var(--blue-d)}
.case p{font-size:13px;color:var(--muted);margin-top:6px}
.case .pill{display:inline-block;margin-top:10px;font-size:12px;color:var(--orange);border:1px solid var(--orange);border-radius:20px;padding:2px 10px}

/* 优势 */
.why{background:linear-gradient(120deg,var(--blue-d),var(--blue));color:#fff}
.why .sec-head h2{color:#fff}
.why .sec-head .en{color:#ffb35c}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.why-item{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:30px 24px;transition:.25s}
.why-item:hover{background:rgba(255,255,255,.13)}
.why-item .big{font-size:34px;font-weight:800;color:#ffb35c}
.why-item h3{font-size:17px;margin:8px 0 6px}
.why-item p{font-size:13.5px;color:#c9d9e9}

/* 客户 */
.clients{background:#fff}
.client-row{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.client-chip{background:#f0f6fd;border:1px solid var(--line);border-radius:40px;padding:12px 30px;font-size:16px;color:var(--blue);font-weight:600;transition:.2s}
.client-chip:hover{background:var(--blue);color:#fff}

/* 新闻 */
.news{background:linear-gradient(180deg,var(--bg),#eef3f8)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-5px)}
.news-card .cover{height:135px;background:linear-gradient(135deg,#dcebfa,#dbe7f3);display:flex;align-items:center;justify-content:center;font-size:42px;overflow:hidden}
.news-card .cover img{width:100%;height:100%;object-fit:cover}
.news-card .info{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.news-card .meta{font-size:12.5px;color:var(--muted);margin-bottom:8px;display:flex;gap:12px;align-items:center}
.news-card .meta .cat{color:var(--orange);border:1px solid var(--orange);border-radius:20px;padding:1px 10px;font-size:12px}
.news-card h3{font-size:17px;color:var(--blue-d);line-height:1.5}
.news-card p{font-size:13.5px;color:var(--muted);margin-top:8px;flex:1}
.news-card .more-line{margin-top:14px;font-size:13px;color:var(--blue-l);font-weight:600}

/* 新闻列表页 */
/* 首页两栏新闻列表 */
.news-grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.n2{display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:.25s}
.n2:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.n2 .thumb{width:120px;height:84px;border-radius:10px;overflow:hidden;flex-shrink:0;background:linear-gradient(135deg,#dcebfa,#dbe7f3)}
.n2 .thumb img{width:100%;height:100%;object-fit:cover}
.n2 .txt{flex:1;min-width:0}
.n2 .meta{font-size:12px;color:var(--muted);display:flex;gap:10px;margin-bottom:6px;align-items:center}
.n2 .meta .cat{color:var(--orange);border:1px solid var(--orange);border-radius:20px;padding:1px 9px;font-size:11.5px;white-space:nowrap}
.n2 h3{font-size:15.5px;color:var(--blue-d);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.n2 p{font-size:13px;color:var(--muted);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.page-banner{background:linear-gradient(120deg,rgba(12,50,87,.9),rgba(30,106,176,.85)),url('images/cover-wall.jpg') center/cover no-repeat;color:#fff;text-align:center;padding:56px 20px}
.page-banner h2{font-size:30px;font-weight:800}
.page-banner p{color:#c9d9e9;margin-top:8px;font-size:14px;letter-spacing:1px}
.newslist-sec{background:#fff;padding:60px 0 80px}
.news-list{max-width:900px;margin:0 auto}
.news-item{display:flex;gap:24px;padding:26px 8px;border-bottom:1px solid var(--line);transition:.2s;align-items:center}
.news-item:hover{background:#f8fbfe}
.news-item .thumb{width:150px;height:96px;border-radius:10px;overflow:hidden;flex-shrink:0;background:linear-gradient(135deg,#dcebfa,#dbe7f3);display:flex;align-items:center;justify-content:center;font-size:34px}
.news-item .thumb img{width:100%;height:100%;object-fit:cover}
.news-item .txt{flex:1}
.news-item .meta{font-size:12.5px;color:var(--muted);display:flex;gap:12px;margin-bottom:6px}
.news-item .meta .cat{color:var(--orange)}
.news-item h3{font-size:18px;color:var(--blue-d);line-height:1.5}
.news-item p{font-size:14px;color:var(--muted);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager{display:flex;gap:12px;justify-content:center;margin-top:40px;align-items:center}
.pager button{padding:9px 22px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;font-size:14px;color:var(--blue);transition:.2s}
.pager button:hover:not(:disabled){border-color:var(--blue)}
.pager button:disabled{opacity:.4;cursor:not-allowed}
.pager span{font-size:14px;color:var(--muted)}

/* 文章详情 */
.article-sec{background:#fff;padding:56px 0 80px}
.article .crumb{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.article .crumb a{color:var(--blue-l)}
.article .crumb a:hover{color:var(--orange)}
.article{max-width:860px;margin:0 auto}
.article .a-meta{color:var(--muted);font-size:13.5px;display:flex;gap:16px;margin-bottom:18px;align-items:center}
.article .a-meta .cat{color:var(--orange);border:1px solid var(--orange);border-radius:20px;padding:2px 12px;font-size:12.5px}
.article h1{font-size:28px;color:var(--blue-d);line-height:1.5;margin-bottom:24px}
.article .a-cover{margin-bottom:28px;border-radius:12px;overflow:hidden}
.article .a-body{font-size:16px;color:#3a4754;line-height:2}
.article .a-body p{margin-bottom:16px}
.article .a-body img{display:block;width:auto;max-width:60%;border-radius:12px;margin:8px auto 20px;box-shadow:var(--shadow)}
.article .a-body p.a-img{margin-bottom:8px}
.article .a-body h2{font-size:21px;color:var(--blue-d);margin:26px 0 12px;line-height:1.5}
.article .a-body h3{font-size:18px;color:var(--blue-d);margin:20px 0 10px}
.article .a-body ul{list-style:disc;padding-left:26px;margin-bottom:16px}
.article .a-body ol{list-style:decimal;padding-left:26px;margin-bottom:16px}
.article .a-body li{margin-bottom:6px}
.article .a-body blockquote{border-left:4px solid var(--orange);background:#f8fbfe;padding:12px 18px;border-radius:0 8px 8px 0;margin-bottom:16px;color:var(--muted)}
.back-line{margin-top:48px;text-align:center}

/* CTA */
.cta{background:linear-gradient(120deg,var(--orange),#f5a54a);color:#fff;text-align:center;padding:70px 0}
.cta h2{font-size:30px;font-weight:800}
.cta p{margin:14px 0 30px;font-size:17px;opacity:.95}
.cta .btn{background:#fff;color:var(--orange-d);font-size:17px;padding:15px 42px}
.cta .btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.15)}

/* 页脚 */
footer{background:var(--blue-d);color:#9fb6cc;padding:56px 0 26px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
footer h4{color:#fff;font-size:16px;margin-bottom:16px}
footer li{margin-bottom:9px}
footer a:hover{color:#fff}
.foot-phone{font-size:24px;font-weight:800;color:#ffd28f}
.copyright{text-align:center;padding-top:22px;font-size:13px;color:#7e94aa}

/* 提示与空态 */
.empty-tip{text-align:center;color:var(--muted);padding:40px 0;font-size:15px}
.loading-tip{text-align:center;color:var(--muted);padding:40px 0;font-size:15px}

/* 管理后台 */
.admin-body{background:#eef3f8}
.login-box{max-width:420px;margin:70px auto;background:#fff;border-radius:16px;box-shadow:var(--shadow);padding:38px 36px}
.login-box h2{text-align:center;color:var(--blue-d);margin-bottom:8px;font-size:24px}
.login-box .sub{text-align:center;color:var(--muted);font-size:13.5px;margin-bottom:26px}
.tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:22px}
.tabs button{flex:1;padding:12px;background:none;border:none;font-size:15px;color:var(--muted);cursor:pointer;border-bottom:3px solid transparent;font-weight:600}
.tabs button.on{color:var(--blue);border-color:var(--orange)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:6px;font-weight:600}
.field input,.field textarea,.field select{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font-size:14.5px;font-family:inherit;outline:none;transition:.2s;background:#fff}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue-l)}
.field textarea{min-height:110px;resize:vertical}
.field textarea.tall{min-height:280px}
.form-msg{font-size:13.5px;padding:10px 14px;border-radius:8px;margin-bottom:14px;display:none}
.form-msg.err{display:block;background:#fdecec;color:#c0392b;border:1px solid #f5c6cb}
.form-msg.ok{display:block;background:#e8f7ee;color:#1e7e34;border:1px solid #bee5c8}
.code-row{display:flex;gap:10px}
.code-row input{flex:1}
.code-row button{padding:0 16px;border:1px solid var(--blue-l);background:#f0f6fd;color:var(--blue);border-radius:8px;cursor:pointer;font-size:13.5px;white-space:nowrap}
.admin-panel{max-width:1200px;margin:30px auto;padding:0 20px}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.panel-head h2{color:var(--blue-d);font-size:22px}
.panel-head .who{color:var(--muted);font-size:13.5px;display:flex;gap:14px;align-items:center}
.kinds{display:flex;gap:12px;margin-bottom:22px}
.kinds button{padding:10px 26px;border-radius:30px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:15px;color:var(--muted);font-weight:600}
.kinds button.on{background:var(--blue);color:#fff;border-color:var(--blue)}
.admin-list{background:#fff;border-radius:14px;border:1px solid var(--line);overflow:hidden}
.admin-item{display:flex;align-items:center;gap:18px;padding:16px 22px;border-bottom:1px solid var(--line)}
.admin-item:last-child{border-bottom:none}
.admin-item .thumb{width:72px;height:48px;border-radius:8px;overflow:hidden;flex-shrink:0;background:#dcebfa;display:flex;align-items:center;justify-content:center;font-size:22px}
.admin-item .thumb img{width:100%;height:100%;object-fit:cover}
.admin-item .txt{flex:1;min-width:0}
.admin-item h3{font-size:15.5px;color:var(--blue-d);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.admin-item .meta{font-size:12.5px;color:var(--muted);margin-top:4px;display:flex;gap:12px}
.st-pub{color:#1e7e34}.st-draft{color:#c0392b}
.admin-item .ops{display:flex;gap:8px;flex-shrink:0}
.admin-item .ops button{padding:7px 16px;border-radius:7px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:13px;color:var(--blue)}
.admin-item .ops button.del{color:#c0392b;border-color:#f0c4c4}
.admin-item .ops button:hover{border-color:var(--blue-l)}
.editor-mask{position:fixed;inset:0;background:rgba(12,50,87,.45);z-index:200;display:none;overflow:auto}
.editor-mask.show{display:block}
.editor{max-width:760px;margin:40px auto;background:#fff;border-radius:16px;padding:32px 34px;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.editor h3{color:var(--blue-d);margin-bottom:20px}
.cover-preview{width:220px;height:130px;border:1px dashed var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;overflow:hidden;margin-bottom:8px;cursor:pointer;background:#f8fbfe}
.cover-preview img{width:100%;height:100%;object-fit:cover}
.editor-ops{display:flex;gap:12px;margin-top:10px}

/* 可视化编辑器 */
.toolbar{display:flex;gap:6px;flex-wrap:wrap;align-items:center;border:1px solid var(--line);border-bottom:none;border-radius:10px 10px 0 0;padding:8px;background:#f4f8fc}
.toolbar button,.toolbar select{padding:6px 10px;border:1px solid var(--line);background:#fff;border-radius:6px;cursor:pointer;font-size:13.5px;color:var(--text);min-width:32px}
.toolbar button:hover{border-color:var(--blue-l);color:var(--blue)}
.rte{min-height:280px;max-height:520px;overflow:auto;border:1px solid var(--line);border-radius:0 0 10px 10px;padding:14px 16px;font-size:14.5px;line-height:1.9;background:#fff;outline:none}
.rte:focus{border-color:var(--blue-l)}
.rte:empty:before{content:attr(data-ph);color:#9fb0c0}
.rte img{max-width:100%;border-radius:8px;margin:6px 0}
.rte h2{font-size:19px;color:var(--blue-d);margin:10px 0 6px}
.rte h3{font-size:16.5px;color:var(--blue-d);margin:8px 0 6px}
.rte ul{list-style:disc;padding-left:22px;margin:6px 0}
.rte ol{list-style:decimal;padding-left:22px;margin:6px 0}
.rte blockquote{border-left:4px solid var(--orange);background:#f8fbfe;padding:8px 14px;margin:6px 0;color:var(--muted)}
@media (max-width:1000px){
  .hero .wrap{flex-direction:column;padding:60px 20px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid,.flow-steps,.why-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  nav.menu{display:none}
}
@media (max-width:600px){
  .hero h2{font-size:30px}
  .svc-grid,.case-grid,.flow-steps,.why-grid,.news-grid{grid-template-columns:1fr}
  .news-grid2{grid-template-columns:1fr}
  .hero-cards{grid-template-columns:1fr}
  .news-item{flex-direction:column;align-items:flex-start}
  .news-item .thumb{width:100%}
}