:root{--navy:#0b2a52;--navy2:#123e75;--orange:#f28c28;--bg:#f5f8fc;--ink:#1c2733;--mute:#5d6b7a;--line:#e1e8f0}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--ink);line-height:1.8;background:#fff}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav img{height:46px;display:block}
.menu{display:flex;gap:28px;font-weight:600}
.menu a{padding:6px 0;border-bottom:2px solid transparent}
.menu a:hover,.menu a.on{color:var(--orange);border-color:var(--orange)}
.btn{display:inline-block;background:var(--orange);color:#fff;padding:12px 28px;border-radius:4px;font-weight:700;border:0;cursor:pointer;font-size:16px;font-family:inherit}
.btn:hover{background:#d97a18}
.btn.ghost{background:transparent;border:2px solid #fff}
.btn.ghost:hover{background:#fff;color:var(--navy)}
.burger{display:none;background:none;border:0;font-size:28px;color:var(--navy)}
.hero{position:relative;color:#fff;background:linear-gradient(135deg,#071b38 0%,var(--navy) 55%,var(--navy2) 100%);overflow:hidden;padding:110px 0 120px}
.hero svg.routes{position:absolute;inset:0;width:100%;height:100%;opacity:.35}
.hero .wrap{position:relative}
.hero h1{font-size:46px;line-height:1.3;max-width:760px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero .sub{margin-top:18px;font-size:22px;font-weight:600}
.hero p.d{margin-top:14px;max-width:640px;color:#c9d6e8}
.hero .cta{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap}
.tags{margin-top:44px;display:flex;gap:10px;flex-wrap:wrap}
.tags span{border:1px solid rgba(255,255,255,.35);padding:4px 16px;border-radius:30px;font-size:14px}
.page-hero{background:linear-gradient(135deg,#071b38,var(--navy2));color:#fff;padding:64px 0}
.page-hero h1{font-size:36px}
.page-hero p{color:#c9d6e8;margin-top:8px;max-width:720px}
section{padding:72px 0}
section.alt{background:var(--bg)}
.title{text-align:center;margin-bottom:44px}
.title h2{font-size:30px;color:var(--navy)}
.title h2:after{content:"";display:block;width:48px;height:4px;background:var(--orange);margin:12px auto 0}
.title p{color:var(--mute);margin-top:10px}
.grid{display:grid;gap:24px}
.g4{grid-template-columns:repeat(4,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:30px 26px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(11,42,82,.12);border-color:var(--orange)}
.card .ic{width:52px;height:52px;border-radius:10px;background:var(--navy);color:var(--orange);display:grid;place-items:center;font-size:26px;margin-bottom:16px}
.card h3{color:var(--navy);margin-bottom:8px;font-size:20px}
.card p,.card li{color:var(--mute);font-size:15px}
.card ul{padding-left:18px;margin-top:8px}
.port{border-top:4px solid var(--orange)}
.port small{color:var(--orange);font-weight:700}
.stats{background:var(--navy);color:#fff;padding:44px 0}
.stats .grid{text-align:center}
.stats b{display:block;font-size:34px;color:var(--orange)}
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.split p{margin-bottom:14px;color:#3c4a59}
.flow{display:flex;gap:0;flex-wrap:wrap;justify-content:center}
.flow div{flex:1;min-width:150px;text-align:center;padding:20px 10px;position:relative}
.flow div b{display:grid;place-items:center;width:56px;height:56px;margin:0 auto 10px;background:var(--orange);color:#fff;border-radius:50%;font-size:20px}
.cta-band{background:linear-gradient(90deg,var(--navy),var(--navy2));color:#fff;text-align:center;padding:56px 0}
.cta-band h2{margin-bottom:10px}
.cta-band .btn{margin-top:20px}
details{background:#fff;border:1px solid var(--line);border-radius:8px;margin-bottom:12px;padding:16px 22px}
summary{cursor:pointer;font-weight:700;color:var(--navy)}
details p{margin-top:10px;color:var(--mute)}
.faqh{margin:30px 0 14px;color:var(--navy);border-left:4px solid var(--orange);padding-left:12px}
form{display:grid;gap:16px}
label{font-weight:600;font-size:14px}
input,select,textarea{width:100%;padding:12px;border:1px solid #c9d3de;border-radius:4px;font-size:15px;font-family:inherit;margin-top:4px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--orange);border-color:transparent}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.note{font-size:13px;color:var(--mute)}
.ok{display:none;background:#e8f6ec;color:#1d6b35;padding:12px;border-radius:4px}
footer{background:#071b38;color:#a9b8cc;padding:48px 0 20px;font-size:14px}
footer .grid{grid-template-columns:2fr 1fr 1fr 1.4fr}
footer h4{color:#fff;margin-bottom:12px}
footer a{display:block;padding:2px 0}footer a:hover{color:var(--orange)}
footer .cp{border-top:1px solid #1d3558;margin-top:30px;padding-top:16px;text-align:center;font-size:13px}
.tbl{width:100%;border-collapse:collapse}
.tbl th,.tbl td{border:1px solid var(--line);padding:12px;text-align:left;font-size:15px}
.tbl th{background:var(--navy);color:#fff}
body{overflow-x:hidden}
.grid>*,.split>*{min-width:0}
@media(max-width:1024px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}.menu{gap:18px}footer .grid{grid-template-columns:1fr 1fr}}
@media(max-width:900px){
.g2,.split,.row{grid-template-columns:1fr}
.hero{padding:70px 0}.hero h1{font-size:32px}.hero .sub{font-size:18px}
.burger{display:block}
.menu{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line);box-shadow:0 8px 16px rgba(0,0,0,.08)}
.menu.open{display:flex}.menu a{padding:14px 20px;border:0}
.nav .btn.top{display:none}
section{padding:52px 0}.page-hero{padding:44px 0}.page-hero h1{font-size:28px}
}
@media(max-width:600px){
.g4,.g3{grid-template-columns:1fr}.stats .g4{grid-template-columns:1fr 1fr}.stats b{font-size:24px}
footer .grid{grid-template-columns:1fr}
.hero h1{font-size:28px}.title h2{font-size:25px}
.hero .cta .btn{flex:1;text-align:center;padding:12px 16px}
.flow div{min-width:45%}
.nav img{height:40px}
}
/* hero slider */
.slides{display:grid}
.slide{grid-area:1/1;opacity:0;visibility:hidden;transform:translateX(40px);transition:opacity .7s,transform .7s,visibility .7s}
.slide.on{opacity:1;visibility:visible;transform:none}
.hero h1{max-width:900px;text-wrap:balance}
.slide .sub{margin-top:18px;font-size:22px;font-weight:600}
.slide .d{margin-top:14px;max-width:640px;color:#c9d6e8}
.slide .cta{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap}
.hero .tags{margin-top:44px}
.hero{padding-bottom:110px}
.s2{text-align:center}.s2 .d{margin-left:auto;margin-right:auto}.s2 .cta{justify-content:center}.s2 h1{margin:0 auto}
.s3 .btn{padding:15px 38px;font-size:18px}
.arr{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.4);background:rgba(7,27,56,.4);color:#fff;font-size:26px;cursor:pointer;line-height:1}
.arr:hover{background:var(--orange);border-color:var(--orange)}
.arr.prev{left:16px}.arr.next{right:16px}
.dots{position:absolute;left:0;right:0;bottom:36px;display:flex;justify-content:center;gap:10px}
.dots button{width:34px;height:5px;border:0;border-radius:3px;background:rgba(255,255,255,.35);cursor:pointer;padding:0}
.dots button.on{background:var(--orange)}
@media(max-width:900px){.arr{display:none}.slide .sub{font-size:18px}.s2{text-align:left}.s2 .cta{justify-content:flex-start}.s2 .d{margin-left:0}.s2 h1{margin:0}}
@media(max-width:600px){.slide .cta .btn{flex:1;text-align:center;padding:12px 16px}}
@media(prefers-reduced-motion:reduce){.slide{transition:none}}
/* blue background animations: drifting glow + flowing route lines + sheen */
.hero,.page-hero,.stats,.cta-band{position:relative;overflow:hidden;isolation:isolate}
.page-hero>.wrap,.stats>.wrap,.cta-band>.wrap{position:relative;z-index:1}
.hero::before,.page-hero::before,.stats::before,.cta-band::before{content:"";position:absolute;z-index:-1;width:620px;height:620px;border-radius:50%;pointer-events:none;
background:radial-gradient(circle,rgba(242,140,40,.22) 0%,rgba(242,140,40,0) 65%);top:-260px;left:-120px;animation:glow1 16s ease-in-out infinite alternate}
.hero::after,.page-hero::after,.cta-band::after{content:"";position:absolute;z-index:-1;width:760px;height:760px;border-radius:50%;pointer-events:none;
background:radial-gradient(circle,rgba(80,150,235,.28) 0%,rgba(80,150,235,0) 65%);bottom:-380px;right:-160px;animation:glow2 20s ease-in-out infinite alternate}
.stats::before{top:-420px;left:10%}
@keyframes glow1{to{transform:translate(55vw,120px) scale(1.25)}}
@keyframes glow2{to{transform:translate(-40vw,-90px) scale(.85)}}
.page-hero h1,.page-hero p{animation:rise .9s both}.page-hero p{animation-delay:.15s}
@keyframes rise{from{opacity:0;transform:translateY(16px)}}
.routes path[stroke-dasharray]{animation:flow 14s linear infinite}
.routes path[stroke-dasharray]:nth-of-type(2){animation-duration:20s;animation-direction:reverse}
.routes path[stroke="#f28c28"]{animation-duration:9s}
@keyframes flow{to{stroke-dashoffset:-280}}
.routes circle{transform-box:fill-box;transform-origin:center;animation:ping 2.8s ease-in-out infinite}
.routes circle:nth-child(2){animation-delay:.9s}.routes circle:nth-child(3){animation-delay:1.8s}
@keyframes ping{0%,100%{transform:scale(1);opacity:.9}50%{transform:scale(2.6);opacity:.35}}
.cta-band .btn{animation:pulse 2.6s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(242,140,40,.55)}70%,100%{box-shadow:0 0 0 16px rgba(242,140,40,0)}}
@media(prefers-reduced-motion:reduce){.hero::before,.hero::after,.page-hero::before,.page-hero::after,.stats::before,.cta-band::before,.cta-band::after,.routes path,.routes circle,.cta-band .btn,.page-hero h1,.page-hero p{animation:none!important}}
/* footer animation */
footer{position:relative;overflow:hidden;isolation:isolate}
footer>.wrap{position:relative;z-index:1}
footer::before{content:"";position:absolute;z-index:-1;width:560px;height:560px;border-radius:50%;pointer-events:none;background:radial-gradient(circle,rgba(242,140,40,.14),rgba(242,140,40,0) 65%);top:-300px;left:-100px;animation:glow1 18s ease-in-out infinite alternate}
footer::after{content:"";position:absolute;top:0;left:0;height:3px;width:30%;background:linear-gradient(90deg,transparent,var(--orange),transparent);animation:lane 7s ease-in-out infinite alternate}
@keyframes lane{to{transform:translateX(233%)}}
@media(prefers-reduced-motion:reduce){footer::before,footer::after{animation:none}}
.slide h1 em{display:block}
.hero .hl{font-size:46px;line-height:1.3;max-width:900px;font-weight:800;text-wrap:balance}
.hero .hl em{font-style:normal;color:var(--orange);display:block}
.s2 .hl{margin:0 auto}
@media(max-width:900px){.hero .hl{font-size:32px}.s2 .hl{margin:0}}
@media(max-width:600px){.hero .hl{font-size:28px}}
.nav img,footer img{width:auto}
@media(max-width:1300px){.arr{display:none}}
/* blog */
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.chip{border:1px solid var(--line);background:#fff;color:var(--navy);padding:8px 18px;border-radius:30px;cursor:pointer;font-family:inherit;font-size:14px;font-weight:600}
.chip.on,.chip:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.post{display:flex;flex-direction:column}
.post small{color:var(--orange);font-weight:700}
.post h3{font-size:18px;margin:6px 0}
.post .more{margin-top:auto;padding-top:10px;color:var(--orange);font-weight:700;font-size:14px}
.cover{width:100%;height:auto;border-radius:8px;display:block;margin:10px 0 6px}
.meta{font-size:13px;color:var(--mute);margin-bottom:16px}
.lead{background:var(--bg);border-left:4px solid var(--orange);padding:14px 18px;border-radius:4px;color:#3c4a59;margin-bottom:10px}
section p{margin-bottom:12px}
.al{padding-left:22px;color:#3c4a59;margin-bottom:12px}
.endcta{margin-top:30px;background:var(--navy);color:#dbe6f5;border:0}
.endcta .btn{margin-top:6px}
.card.endcta p{color:#dbe6f5;font-size:15px}