:root{
  --bg:#f6f9ff;
  --navy:#303747;
  --deep:#142442;
  --text:#172035;
  --muted:#6e7588;
  --gold:#d6aa72;
  --red:#f20d19;
  --blue:#168fff;
  --radius:18px;
}
*{box-sizing:border-box}
html,body{width:100%;min-height:100%;overflow-x:hidden}
body{margin:0;background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text)}
a{text-decoration:none;-webkit-tap-highlight-color:transparent}.hide{display:none!important}
.header{width:100%;background:#3d4453;padding:10px 0;text-align:center;line-height:0;box-shadow:0 6px 18px rgba(18,25,40,.16);position:relative;z-index:2}
.header img{display:block;width:min(1240px,96vw);height:auto;margin:0 auto}.page-bg{min-height:100vh;background:radial-gradient(circle at 80% 2%,rgba(229,239,255,.9),transparent 34%),linear-gradient(180deg,#f8fbff 0%,#edf5ff 38%,#f8fbff 100%)}
.container{width:min(1200px,94vw);margin:0 auto}.hero{position:relative;display:grid;grid-template-columns:610px 1fr;gap:28px;padding:42px 0 22px;min-height:600px}.hero-left{position:relative;z-index:1}.worldcup-title{display:block;width:560px;max-width:100%;margin:0 auto 12px}.intro-card{background:rgba(255,255,255,.76);border:1px solid rgba(214,170,114,.34);box-shadow:0 12px 32px rgba(31,55,90,.10);border-radius:18px;padding:20px 24px}.intro-card p{margin:0;font-size:23px;line-height:1.72;text-align:center;font-weight:700;letter-spacing:.02em}.intro-card span{color:var(--gold)}.notice{margin:18px auto 14px;color:var(--red);font-size:23px;line-height:1.5;text-align:center;font-weight:900;text-shadow:0 1px 0 rgba(255,255,255,.8)}
.platform-title{display:flex;align-items:center;justify-content:center;gap:10px;margin:8px 0 12px;color:#24304a;font-size:20px;font-weight:900}.platform-title:before,.platform-title:after{content:"";height:1px;background:linear-gradient(90deg,transparent,#d5b07e,transparent);width:92px}.platform-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:0 0 18px}.platform-btn{height:92px;border:0;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;padding:0 22px 0 18px;border-radius:12px;background:linear-gradient(135deg,#fff4d8 0%,#d9b580 54%,#bc8f5b 100%);box-shadow:0 9px 20px rgba(84,60,38,.18),inset 0 1px 0 rgba(255,255,255,.85);transition:.22s transform,.22s filter}.platform-btn:nth-child(2){background:linear-gradient(135deg,#dbf6ff 0%,#2c9cff 58%,#187bd9 100%)}.platform-btn:nth-child(3){background:linear-gradient(135deg,#e9f1ff 0%,#93b2ce 56%,#7093b7 100%)}.platform-btn:nth-child(4){background:linear-gradient(135deg,#e5e8ff 0%,#6978ff 55%,#535be8 100%)}.platform-btn:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.38),transparent 35%,rgba(255,255,255,.22));clip-path:polygon(0 0,70% 0,100% 100%,0 100%);opacity:.56}.platform-btn:hover{transform:translateY(-5px);filter:saturate(1.05)}.platform-btn .logo-box{position:relative;z-index:1;width:58%;height:68px;display:flex;align-items:center;justify-content:center}.platform-btn img{max-width:100%;max-height:58px;object-fit:contain}.platform-btn .btn-copy{position:relative;z-index:1;text-align:right;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.38)}.platform-btn .btn-copy small{display:block;font-size:14px;line-height:1.2;font-weight:600;opacity:.94}.platform-btn .btn-copy strong{display:block;font-size:22px;line-height:1.2;font-weight:900}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:10px}.service-btn{height:82px;display:flex;align-items:center;justify-content:center;border-radius:12px;background-size:100% 100%;background-repeat:no-repeat;transition:.22s transform;filter:drop-shadow(0 7px 12px rgba(35,50,80,.16))}.service-btn:hover{transform:translateY(-4px)}.service-btn.tg{background-image:url('../images/btn_blue.png')}.service-btn.qq{background-image:url('../images/btn_gray.png')}.service-btn.wx{background-image:url('../images/btn_purple.png')}.service-btn img{width:48px;height:48px;object-fit:contain;margin-right:10px}.service-btn .qq-icon{background:rgba(255,255,255,.86);border-radius:50%;padding:4px}.service-btn p{margin:0;color:#fff;font-size:15px;line-height:1.1;text-shadow:0 1px 2px rgba(0,0,0,.35)}.service-btn h4{margin:3px 0 0;color:#fff;font-size:20px;line-height:1.1;font-weight:900;text-shadow:0 2px 3px rgba(0,0,0,.48)}
.hero-right{position:relative;min-height:540px;display:flex;align-items:flex-start;justify-content:flex-end;padding-top:20px}.hero-art-card{width:536px;border-radius:24px;overflow:hidden;box-shadow:0 20px 50px rgba(18,32,54,.22);border:1px solid rgba(255,255,255,.8);background:#dfe8f6}.hero-art-card img{display:block;width:100%;height:480px;object-fit:cover;object-position:center}.hero-badge{position:absolute;left:34px;bottom:50px;background:rgba(255,255,255,.88);border:1px solid rgba(214,170,114,.34);border-radius:999px;padding:12px 20px;color:#25304b;font-weight:900;box-shadow:0 10px 30px rgba(31,55,90,.12)}
.promo-section{padding:18px 0 55px}.promo-title{text-align:center;margin:0 0 18px;font-size:28px;line-height:1.35;color:#27314a;font-weight:900}.promo-title span{color:var(--red)}.promo-list{display:grid;gap:22px}.promo-card{border-radius:20px;overflow:hidden;background:#fff;border:1px solid rgba(209,219,232,.8);box-shadow:0 14px 32px rgba(31,55,90,.12)}.promo-card img{display:block;width:100%;height:auto}.footer-note{text-align:center;color:#7a8296;font-size:14px;line-height:1.8;padding:0 0 36px}.footer-note strong{color:#4450d8}.float-tools{position:fixed;right:18px;top:50%;z-index:10;display:grid;gap:10px}.float-tools a{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#fff,#eef6ff);box-shadow:0 8px 22px rgba(34,56,90,.16);font-size:12px;color:#5d6c86;font-weight:700}.mobile-back{display:none}
@media(max-width:900px){
  body{background:#f8fbff}.header{padding:7px 0}.header img{width:96vw}.container{width:100%;padding:0 12px}.hero{display:block;padding:16px 0 8px;min-height:0}.worldcup-title{width:86%;margin:10px auto 8px}.intro-card{border-radius:14px;padding:13px 13px;background:rgba(255,255,255,.86)}.intro-card p{font-size:15px;line-height:1.72;text-align:left;font-weight:700}.mobile-hero-art{display:block;margin:12px 0;border-radius:14px;overflow:hidden;box-shadow:0 10px 22px rgba(31,55,90,.14);border:1px solid rgba(255,255,255,.85)}.mobile-hero-art img{display:block;width:100%;height:auto}.hero-right{display:none}.notice{font-size:16px;margin:12px 0 10px}.platform-title{font-size:16px;margin:14px 0 10px}.platform-title:before,.platform-title:after{width:50px}.platform-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:12px}.platform-btn{height:76px;border-radius:9px;padding:0 10px;display:flex;flex-direction:column;justify-content:center}.platform-btn .logo-box{width:100%;height:38px}.platform-btn img{max-height:34px}.platform-btn .btn-copy{text-align:center;margin-top:3px}.platform-btn .btn-copy small{display:none}.platform-btn .btn-copy strong{font-size:16px}.service-grid{grid-template-columns:1fr;gap:10px}.service-btn{height:72px;border-radius:9px}.service-btn img{width:42px;height:42px}.service-btn p{font-size:14px}.service-btn h4{font-size:20px}.promo-section{padding:14px 0 24px}.promo-title{font-size:19px;margin-bottom:12px}.promo-list{gap:12px}.promo-card{border-radius:12px}.footer-note{font-size:12px;padding:0 12px 22px}.float-tools{display:none}.mobile-back{display:block;text-align:center;margin:12px auto 0;color:#697287;font-size:12px}.page-bg{background:radial-gradient(circle at 90% 10%,rgba(226,240,255,.9),transparent 36%),linear-gradient(180deg,#f8fbff 0%,#eef6ff 48%,#f8fbff 100%)}
}
@media(min-width:901px){.mobile-hero-art{display:none}}