:root{--blue:#0b3d91;--blue2:#1260e0;--blue3:#1e7cff;--orange:#ff6a00;--ink:#16233b;
--mut:#5b6b85;--bg:#f5f7fb;--card:#fff;--line:#e6ebf3;--ok:#16a34a}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
color:var(--ink);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--blue2);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.topbar{background:#072a66;color:#fff;font-size:13px;padding:7px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:4px}
.topbar b{color:#ffd27a}
.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
.nav .container{display:flex;align-items:center;gap:14px;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--blue);white-space:nowrap}
.logo img.mark{width:40px;height:40px;object-fit:contain;display:block;flex:0 0 40px}
.favicon-mark{display:none}
.nav-links{display:flex;gap:14px;margin-left:auto;font-size:13.5px;align-items:center}
.nav-links a{color:var(--ink);font-weight:600;white-space:nowrap}
.nav-links a:hover,.nav-links a.on{color:var(--blue2);text-decoration:none}
.nav-item{position:relative;display:block}
.nav-item>a{display:block;padding:6px 0}
.nav-sub{position:absolute;top:100%;left:-12px;background:#fff;border:1px solid var(--line);
border-radius:10px;box-shadow:0 12px 28px rgba(11,61,145,.14);padding:6px;min-width:136px;
display:none;z-index:70}
.nav-item:hover .nav-sub{display:block}
.nav-sub a{display:block;padding:7px 12px;border-radius:7px;font-weight:600;font-size:13.5px}
.nav-sub a:hover{background:#eef4ff;text-decoration:none}
.cta-btn{background:var(--orange);color:#fff!important;padding:9px 16px;border-radius:8px;font-weight:700;
white-space:nowrap;font-size:13.5px}.cta-btn:hover{background:#e85f00;text-decoration:none}
.hero{background:linear-gradient(135deg,#0b3d91 0%,#1260e0 62%,#1e7cff 100%);color:#fff;padding:46px 0 50px}
.hero h1{font-size:clamp(23px,3.3vw,35px);line-height:1.32;margin-bottom:16px;font-weight:900;max-width:960px}
.hero .sub{font-size:clamp(14.5px,1.8vw,16.5px);opacity:.96;max-width:860px}
.hero .tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:9px}
.hero .tags span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);padding:5px 12px;
border-radius:999px;font-size:12.5px}
.breadcrumb{font-size:13px;color:var(--mut);padding:16px 0 0}
.breadcrumb a{color:var(--mut)}
.section{padding:46px 0}
.section.alt{background:#fff}
.sec-head{text-align:center;margin-bottom:28px}
.sec-head h2{font-size:clamp(20px,2.6vw,27px);color:var(--blue);font-weight:900}
.sec-head p{color:var(--mut);margin-top:8px;max-width:780px;margin-left:auto;margin-right:auto;font-size:14.5px}
.sec-head.left{text-align:left}.sec-head.left p{margin-left:0}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(310px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(195px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 20px}
.card h3{font-size:16.5px;color:var(--blue);margin-bottom:8px}
.card p{font-size:14px;color:var(--mut)}
.fact{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:18px 18px}
.fact .k{font-size:12.5px;color:var(--mut);font-weight:700;letter-spacing:.03em}
.fact .v{font-size:17px;font-weight:900;color:var(--blue);margin-top:3px;line-height:1.45}
.fact .d{font-size:13px;color:var(--mut);margin-top:5px}
.buyer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.buyer{background:#fff;border:2px solid var(--line);border-radius:16px;padding:26px 24px;transition:.2s;
color:var(--ink);display:block}
.buyer:hover{text-decoration:none;border-color:var(--blue2);box-shadow:0 14px 34px rgba(11,61,145,.13);transform:translateY(-3px)}
.buyer .k{font-size:12.5px;font-weight:800;letter-spacing:.06em;color:var(--orange)}
.buyer h3{font-size:19px;color:var(--blue);margin:8px 0 10px;line-height:1.4}
.buyer p{font-size:13.5px;color:var(--mut);margin-bottom:12px}
.buyer ul{list-style:none;margin-bottom:14px}
.buyer li{font-size:13.5px;color:#33415c;padding:3px 0 3px 20px;position:relative}
.buyer li::before{content:"·";position:absolute;left:6px;color:var(--blue2);font-weight:900}
.buyer .more{font-weight:800;color:var(--blue2);font-size:14px}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;
box-shadow:0 4px 20px rgba(11,61,145,.07);font-size:14px}
th{background:var(--blue);color:#fff;padding:11px 10px;text-align:center;font-weight:700;white-space:nowrap}
td{padding:10px 9px;text-align:center;border-bottom:1px solid var(--line)}
tr:nth-child(even) td{background:#f8fafd}
tr:hover td{background:#eef4ff}
.table-wrap{overflow-x:auto;border-radius:12px;margin:16px 0}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:13px;padding:24px 18px;position:relative}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:-15px;left:18px;width:31px;height:31px;
background:var(--orange);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800}
.step h4{font-size:15px;color:var(--blue);margin-bottom:6px}
.step p{font-size:13.5px;color:var(--mut)}
.article{background:#fff;border-radius:14px;padding:32px 36px;margin:20px 0;box-shadow:0 4px 20px rgba(11,61,145,.06)}
.article h1{font-size:clamp(21px,2.8vw,29px);color:var(--blue);line-height:1.4;margin-bottom:14px}
.article h2{font-size:19px;color:var(--blue);margin:26px 0 12px;padding-left:12px;border-left:4px solid var(--orange)}
.article h3{font-size:16px;margin:18px 0 8px;color:#1d2c4a}
.article p,.article li{font-size:15px;color:#33415c;margin-bottom:10px}
.article ul,.article ol{padding-left:22px;margin-bottom:12px}
.article .meta{color:var(--mut);font-size:13.5px;margin-bottom:18px}
.answer{background:#f0f6ff;border:1.5px solid #cfe0ff;border-radius:13px;padding:20px 22px;margin:16px 0}
.answer .lbl{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--blue2);margin-bottom:7px}
.answer p{font-size:15.5px;color:#1d2c4a;margin:0;line-height:1.8}
.qa{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:18px 22px}
.qa h3{font-size:15.5px;color:var(--blue);margin-bottom:8px}
.qa p,.qa li{font-size:14px;color:#3d4c66}
.qa ul{padding-left:20px;margin-top:4px}
.cta-band{background:linear-gradient(135deg,#ff6a00,#ff8c42);color:#fff;border-radius:16px;padding:34px 28px;text-align:center}
.cta-band h2{font-size:clamp(19px,2.6vw,25px);font-weight:900;margin-bottom:10px}
.cta-band p{opacity:.96;margin-bottom:20px;font-size:14.5px}
.cta-band .btn{background:#fff;color:#c24800;padding:12px 30px;border-radius:10px;font-weight:800;font-size:15.5px;display:inline-block}
.cta-band .btn:hover{text-decoration:none;background:#fff6ee}
.footer{background:#072a66;color:#c9d6ef;margin-top:44px;padding:42px 0 24px;font-size:14px}
.footer .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px;margin-bottom:24px}
.footer h4{color:#fff;margin-bottom:12px;font-size:15px}
.footer a{color:#c9d6ef;display:block;padding:3px 0}
.footer a:hover{color:#fff}
.footer .entity{font-size:13px;line-height:1.7;color:#a9bede}
.footer .bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:12.5px;color:#8fa6cc}
.pill{display:inline-block;background:#eef4ff;color:var(--blue);font-size:12px;font-weight:700;border-radius:999px;padding:4px 12px;margin:2px}
.pill.o{background:#fff3e8;color:#b35200}
.hot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.hot-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;transition:.2s;display:block;color:var(--ink)}
.hot-card:hover{box-shadow:0 10px 26px rgba(11,61,145,.12);text-decoration:none;transform:translateY(-2px)}
.hot-card .rt{font-size:15.5px;font-weight:800;color:var(--blue);line-height:1.45}
.hot-card .meta{font-size:12.5px;color:var(--mut);margin:6px 0 10px}
.hot-card .prices{display:flex;flex-wrap:wrap;gap:6px}
.hot-card .tag{background:#eef4ff;color:var(--blue);border-radius:6px;padding:3px 8px;font-size:12px;font-weight:700}
/* 一行一条的清单（新闻/资讯板块用） */
.line-list{list-style:none;margin:12px 0 0;padding:0;border-top:1px solid var(--line)}
.muted{color:var(--mut);font-size:14.5px;line-height:1.85}
.line-list li{display:flex;align-items:baseline;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);
font-size:15px;line-height:1.5}
.line-list li .t{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
font-weight:600;color:var(--ink)}
.line-list li .t:hover{color:var(--blue2);text-decoration:underline}
.line-list li .m{flex:0 0 auto;color:var(--mut);font-size:13px;white-space:nowrap}
@media(max-width:640px){.line-list li{flex-wrap:nowrap;gap:8px;font-size:14.5px}
.line-list li .t{white-space:nowrap}.line-list li .m{font-size:12px}}
.rgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:8px}
.rline{display:flex;flex-direction:column;gap:3px;background:#fff;border:1px solid var(--line);
border-radius:10px;padding:10px 13px;color:var(--ink);transition:.15s;text-decoration:none}
.rline:hover{border-color:#b9cdf2;box-shadow:0 6px 16px rgba(11,61,145,.08);text-decoration:none}
.rline .rt{font-size:14px;font-weight:800;color:var(--blue);line-height:1.4}
.rline .rm{font-size:12px;color:var(--mut)}
.rline .rp{font-size:12px;color:#8a5a00;font-weight:700}
.rtools{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:0 0 14px}
.rtools input{flex:1 1 260px;max-width:420px;padding:9px 13px;border:1px solid var(--line);
border-radius:9px;font-size:14px;font-family:inherit;color:var(--ink);background:#fff}
.rtools input:focus{outline:none;border-color:var(--blue2)}
.rtools span{font-size:13px;color:var(--mut)}
.chipbar{display:flex;flex-wrap:wrap;gap:7px}
.city-chip{background:#eef4ff;border:1px solid #d8e5fb;color:var(--blue);border-radius:999px;
padding:5px 12px;font-size:13px;font-weight:700;text-decoration:none}
.city-chip:hover{background:var(--blue2);color:#fff!important;border-color:var(--blue2);text-decoration:none}
.city-chip b{font-weight:800;margin-left:6px;opacity:.72;font-size:12px}
.rel-links{display:flex;flex-wrap:wrap;gap:7px}
.rel-link{background:#f4f6fb;border:1px solid var(--line);border-radius:999px;padding:5px 12px;
font-size:13px;color:var(--blue);text-decoration:none}
.rel-link:hover{border-color:var(--blue2);text-decoration:none}
.note{background:#fff8f2;border-left:4px solid var(--orange);border-radius:0 10px 10px 0;padding:14px 18px;
margin:16px 0;color:#7a3b00;font-size:14px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;font-size:14.5px}
.kv dt{color:var(--mut);font-weight:600}
.kv dd{color:var(--ink)}
.corp-site{font-size:12.5px;color:#a9bede;margin-top:8px}
.corp-site a{display:inline;color:#a9bede}
/* 关于正沅子栏目导航 */
.subnav{display:flex;flex-wrap:wrap;gap:8px;padding:16px 0 0}
.subnav a{background:#eef4ff;border:1px solid #d8e5fb;color:var(--blue);border-radius:999px;
padding:6px 14px;font-size:13px;font-weight:700}
.subnav a:hover{text-decoration:none;border-color:var(--blue2)}
.subnav a.on{background:var(--blue2);border-color:var(--blue2);color:#fff}
/* 网站地图（HTML） */
.sm-block{margin:26px 0 0}
.sm-block h2{font-size:19px;color:var(--blue);font-weight:900;margin-bottom:10px;
padding-bottom:8px;border-bottom:2px solid var(--line)}
.sm-links{display:flex;flex-wrap:wrap;gap:7px}
.sm-links a{background:#fff;border:1px solid var(--line);border-radius:8px;padding:5px 11px;
font-size:13px;color:var(--blue2)}
.sm-links a:hover{border-color:var(--blue2);text-decoration:none;background:#f7faff}
.sm-origin{font-size:14px;font-weight:800;color:var(--blue);margin:16px 0 8px}
.sm-top{background:#eef4ff;border:1px solid #d8e5fb;border-radius:10px;padding:12px 16px;
font-size:13.5px;color:var(--blue);margin-bottom:6px}
@media(max-width:900px){.nav-links{display:none}.nav .container{height:58px}.article{padding:22px 18px}}
/* 线路页：概览条 / 运价表 / 服务矩阵 */
.rbrief{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 18px}
.rbrief span{background:#eef4ff;border:1px solid #d8e5fb;color:var(--blue);border-radius:999px;
padding:6px 14px;font-size:13.5px;font-weight:700}
.rbrief span.o{background:#fff3e8;border-color:#ffd9bd;color:#b35200}
.rtable td.scene{color:var(--mut);font-size:13.5px}
.rtable td.price{font-weight:800;color:#8a5a00;white-space:nowrap}
.rtable td.price .ph{font-weight:600;font-size:12px;color:#a5762a}
.cover{background:#f7faff;border:1px solid #dde8fb;border-radius:12px;padding:16px 20px;margin:14px 0 10px}
.cover p{font-size:14.5px;color:#33415c;line-height:1.85;margin:0 0 6px}
.cover p:last-child{margin-bottom:0}
.cover b{color:var(--blue);font-weight:800}
.cover-note{font-size:14.5px;color:#b35200;font-weight:700;margin:0 0 10px}
.mx{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:14px 0}
.mx .m{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.mx .m b{display:block;font-size:15px;color:var(--blue);margin-bottom:4px}
.mx .m span{font-size:13px;color:var(--mut);line-height:1.6}
/* 客服浮窗（微信小程序客服通道） */
.kf{position:fixed;right:22px;bottom:26px;z-index:95;font-size:14px}
.kf-btn{display:flex;align-items:center;gap:9px;background:linear-gradient(135deg,#07c160,#04a94f);
color:#fff;border:0;border-radius:999px;padding:14px 24px;font-size:16px;font-weight:900;cursor:pointer;
box-shadow:0 12px 30px rgba(7,193,96,.42);animation:kfPulse 2.4s infinite}
.kf-btn:hover{filter:brightness(1.06)}
.kf-btn .dot{width:9px;height:9px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.35);
animation:kfDot 1.6s infinite}
@keyframes kfPulse{0%,100%{box-shadow:0 12px 30px rgba(7,193,96,.42)}
50%{box-shadow:0 12px 40px rgba(7,193,96,.75)}}
@keyframes kfDot{0%,100%{opacity:1}50%{opacity:.35}}
.kf-panel{display:none;position:absolute;right:0;bottom:64px;width:330px;background:#fff;
border:1px solid var(--line);border-radius:18px;box-shadow:0 20px 50px rgba(11,61,145,.22);
padding:20px 20px 18px;text-align:left}
.kf-panel.on{display:block}
.kf-head{display:flex;align-items:center;gap:9px;margin-bottom:8px}
.kf-head b{font-size:17px;color:var(--blue);font-weight:900}
.kf-head i{font-style:normal;font-size:11.5px;font-weight:800;color:#04a94f;background:#e8fbf0;
border-radius:999px;padding:2px 9px}
.kf-panel p{font-size:13px;color:var(--mut);line-height:1.7;margin-bottom:14px}
.kf-panel .kf-act{display:flex;align-items:center;justify-content:center;gap:8px;text-align:center;
background:#07c160;color:#fff!important;border-radius:12px;padding:14px;font-weight:900;font-size:16px;
margin-bottom:10px;box-shadow:0 8px 20px rgba(7,193,96,.28)}
.kf-panel .kf-act:hover{text-decoration:none;background:#06ae57}
.kf-panel .kf-tel{display:flex;align-items:center;justify-content:center;gap:8px;text-align:center;
border:2px solid var(--blue2);border-radius:12px;padding:12px;font-weight:900;font-size:16px;
color:var(--blue2)!important}
.kf-panel .kf-tel:hover{text-decoration:none;background:#eef4ff}
.kf-qr{display:block;width:150px;height:150px;margin:0 auto 10px;object-fit:contain}
.kf-tip{font-size:11.5px;color:#94a3b8;margin-top:10px;line-height:1.7;text-align:center}
@media(max-width:600px){.kf{right:12px;bottom:14px}.kf-panel{width:min(88vw,330px)}
.kf-btn{padding:12px 20px;font-size:15px}}