:root{--blue:#0f4c81;--blue2:#1b6ca8;--ink:#1f2733;--gray:#5b6b7b;--bg:#f5f8fb;--line:#e2e9f0;}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7}
a{color:var(--blue2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header.site{background:var(--blue);color:#fff;position:sticky;top:0;z-index:10}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;flex-wrap:wrap}
.brand{font-weight:700;font-size:20px;color:#fff}
.brand small{display:block;font-weight:400;font-size:11px;opacity:.8;letter-spacing:.5px}
header.site .brand img{height:38px;vertical-align:middle;margin-right:10px;background:rgba(255,255,255,.92);padding:3px 6px;border-radius:5px}
nav.site a{color:#dce8f3;margin-left:18px;font-size:15px}
nav.site a:hover,nav.site a.active{color:#fff}
.hero{background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;padding:70px 0}
.hero h1{font-size:40px;line-height:1.2;margin-bottom:14px}
.hero p{font-size:18px;max-width:720px;opacity:.95}
.hero .cta{display:inline-block;margin-top:24px;background:#fff;color:var(--blue);padding:12px 26px;border-radius:6px;font-weight:600}
.btn{display:inline-block;background:var(--blue);color:#fff;padding:11px 24px;border-radius:6px;font-weight:600;margin-top:18px}
.btn:hover{background:var(--blue2);text-decoration:none}
section{padding:54px 0}
h2{font-size:28px;margin-bottom:10px;color:var(--blue)}
h3{font-size:20px;margin:18px 0 8px;color:var(--ink)}
.lead{color:var(--gray);max-width:780px;margin-bottom:26px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px}
.card h3{margin-top:0}
.tag{display:inline-block;background:#e8f1f9;color:var(--blue);font-size:12px;padding:3px 10px;border-radius:20px;margin:4px 4px 0 0}
.strip{background:var(--blue);color:#fff;padding:26px 0;text-align:center}
.strip .wrap{display:flex;flex-wrap:wrap;justify-content:space-around;gap:14px}
.strip div{font-size:15px}
.strip b{display:block;font-size:26px}
.imgph{background:#dde7f0;border:1px dashed #b9c9d8;border-radius:8px;min-height:180px;display:flex;align-items:center;justify-content:center;color:#7c93a8;font-size:14px;text-align:center;padding:10px}
ul.clean{list-style:none}
ul.clean li{padding:6px 0;border-bottom:1px solid var(--line)}
.faq{background:#fff;border:1px solid var(--line);border-radius:10px;padding:0 22px;margin-bottom:12px}
.faq h3{margin:18px 0 6px}
.faq p{color:var(--gray);padding-bottom:16px}
table.spec{width:100%;border-collapse:collapse;background:#fff;margin-top:10px}
table.spec th,table.spec td{border:1px solid var(--line);padding:10px 12px;text-align:left}
table.spec th{background:#eef4f9}
footer.site{background:#16263a;color:#aebbc8;padding:36px 0;font-size:14px}
footer.site a{color:#cfe0ee}
.two{display:block}
.two > div:last-child{margin-top:14px}
.two img{display:block;width:100%;max-width:640px;height:auto;border-radius:8px;margin:0 auto}
@media(max-width:760px){.hero h1{font-size:30px}nav.site a{margin-left:10px;font-size:13px}}
.meta{color:var(--gray);font-size:14px}

/* ===== Hero Carousel ===== */
.carousel{position:relative;overflow:hidden;background:linear-gradient(135deg,#0a2a3e,#0d3d5c);color:#fff}
.carousel .slides{position:relative;min-height:380px}
.carousel .slide{display:none;align-items:center;padding:60px 80px;color:#fff;min-height:380px}
.carousel .slide.active{display:flex;animation:fadeIn .6s ease}
.carousel .slide .text{flex:1;padding-right:40px}
.carousel .slide .text h2{font-size:34px;line-height:1.25;color:#fff;margin-bottom:12px;font-weight:700}
.carousel .slide .text p{font-size:18px;opacity:.92;line-height:1.6;max-width:520px}
.carousel .slide .img{flex:1;text-align:right}
.carousel .slide .img img{max-width:100%;height:auto;max-height:360px;border-radius:10px;box-shadow:0 8px 32px rgba(0,0,0,.3);object-fit:contain}
.carousel .dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:5}
.carousel .dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.35);cursor:pointer;transition:background .25s}
.carousel .dot.active,.carousel .dot:hover{background:#fff}
.carousel .arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.25);color:#fff;border:none;font-size:28px;padding:12px 18px;cursor:pointer;z-index:5;border-radius:4px;transition:background .2s}
.carousel .arrow:hover{background:rgba(0,0,0,.45)}
.carousel .arrow.left{left:14px}
.carousel .arrow.right{right:14px}
@keyframes fadeIn{from{opacity:.4}to{opacity:1}}

/* About page banner */
.about-hero{margin:0;padding:0;background:#e8ecf0}
.about-hero img{display:block}

@media(max-width:760px){
  .carousel .slides{min-height:auto}
  .carousel .slide{flex-direction:column;padding:36px 20px;text-align:center;min-height:auto}
  .carousel .slide .text{padding-right:0;margin-bottom:20px}
  .carousel .slide .text h2{font-size:24px}
  .carousel .slide .text p{font-size:16px;max-width:100%}
  .carousel .slide .img img{max-height:240px}
  .carousel .arrow{padding:8px 12px;font-size:20px}
}
.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:1000px;margin:0 auto}
.video-grid .frame{border-radius:10px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.1)}
@media(max-width:768px){.video-grid{grid-template-columns:1fr}}
.client-logos{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:32px;margin-top:20px}
.client-logos img{max-height:56px;width:auto;max-width:180px;filter:grayscale(30%);transition:filter .2s}
.client-logos img:hover{filter:grayscale(0%)}
@media(max-width:640px){.client-logos{gap:20px}.client-logos img{max-height:44px;max-width:140px}}