:root{
  --blue:#2f83ff;
  --blue2:#189eff;
  --dark:#07120b;
  --navy:#071c3d;
  --text:#0b1d38;
  --muted:#63708a;
  --white:#fff;
  --soft:#f5f7fb;
  --card:#ffffff;
  --shadow:0 16px 38px rgba(20,52,96,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit}img{display:block;max-width:100%}button{font-family:inherit;border:0;background:none;cursor:pointer}.container{width:min(100% - 64px,1180px);margin:0 auto}.site-header{position:absolute;left:0;right:0;top:0;z-index:20;padding:18px 0}.nav-wrap{height:54px;display:flex;align-items:center;justify-content:space-between}.brand img{width:142px;height:auto}.nav{display:flex;align-items:center;gap:48px;color:#fff;font-size:17px;font-weight:800;text-shadow:0 2px 6px rgba(0,0,0,.34)}.nav a{position:relative;padding:8px 0}.nav a:after{content:"";position:absolute;left:50%;bottom:-7px;width:0;height:3px;border-radius:9px;background:linear-gradient(90deg,#45d4ff,#2f83ff);transition:.24s}.nav a:hover:after{left:0;width:100%}.menu-btn{display:none;width:40px;height:34px;flex-direction:column;justify-content:center;gap:6px}.menu-btn span{display:block;height:3px;background:#fff;border-radius:999px}.section-dark{background:radial-gradient(circle at 30% 40%,rgba(48,76,38,.62),transparent 38%),linear-gradient(120deg,#060804 0%,#0a1c08 54%,#061005 100%)}.hero{position:relative;overflow:hidden;min-height:742px;padding:92px 0 74px}.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 8% 88%,rgba(0,0,0,.58),transparent 30%),radial-gradient(circle at 74% 38%,rgba(22,45,18,.54),transparent 42%);opacity:.95}.hero-noise{position:absolute;inset:0;opacity:.09;background-image:linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:36px 36px}.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:660px 1fr;gap:44px;align-items:start}.hero-copy{padding-top:8px}.hero-title-img{width:650px;max-width:100%;height:auto;margin:0 0 22px}.hero-desc{max-width:650px;color:#fff;font-size:19px;line-height:1.82;font-weight:800;letter-spacing:.1px;text-shadow:0 2px 8px rgba(0,0,0,.38)}.hero-actions{margin-top:26px;display:grid;grid-template-columns:270px 270px;gap:18px 28px}.cta-btn{height:76px;border-radius:999px;background:linear-gradient(135deg,#1ba4ff,#3d78ff);color:#fff;display:flex;align-items:center;gap:16px;padding:0 28px;font-size:17px;font-weight:900;box-shadow:0 16px 32px rgba(46,128,255,.26),inset 0 1px 0 rgba(255,255,255,.2);transition:.22s}.cta-btn:hover{transform:translateY(-4px);filter:saturate(1.08)}.btn-icon{width:32px;height:32px;border-radius:50%;flex:0 0 32px;display:grid;place-items:center;background:rgba(255,255,255,.2);font-size:16px;overflow:hidden}.btn-icon.telegram{background:linear-gradient(135deg,#69e7ff,#178dff)}.btn-icon.wechat{background:linear-gradient(135deg,#58e777,#10ba49)}.btn-icon.qq{background:#fff}.btn-icon.qq img{width:100%;height:100%;object-fit:cover}.btn-icon.mini{background:#fff;color:#2778ff}.pulse{animation:pulseGlow 2.5s ease-in-out infinite}@keyframes pulseGlow{0%,100%{box-shadow:0 16px 32px rgba(46,128,255,.26)}50%{box-shadow:0 18px 44px rgba(46,128,255,.55),0 0 0 9px rgba(54,132,255,.06)}}.hero-phone{position:relative;z-index:3;justify-self:end;padding-top:0}.hero-phone img{width:365px;filter:drop-shadow(0 26px 28px rgba(0,0,0,.45));animation:floatPhone 5s ease-in-out infinite}@keyframes floatPhone{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}.hero-wave{position:absolute;z-index:2;left:-7%;right:-7%;bottom:-3px;height:162px;background:#fff;clip-path:ellipse(62% 70% at 5% 100%)}.hero-wave:after{content:"";position:absolute;right:-4%;bottom:0;width:50%;height:130%;background:#fff;clip-path:polygon(24% 72%,100% 0,100% 100%,0 100%)}
.logo-strip{position:relative;z-index:6;background:#fff;padding:26px 0 24px;overflow:hidden;border-bottom:1px solid rgba(8,31,69,.06);box-shadow:0 8px 24px rgba(10,42,80,.05)}.strip-marquee{display:flex;width:max-content;animation:marqueeLogos 34s linear infinite}.logo-strip:hover .strip-marquee{animation-play-state:paused}.strip-group{display:flex;align-items:center;gap:70px;padding-right:70px;flex:0 0 auto}.strip-group img{height:42px;max-width:150px;object-fit:contain;filter:drop-shadow(0 4px 8px rgba(6,30,64,.05))}.strip-group img[src*="brand-mk"]{height:32px}.strip-group img[src*="logo-kaiyun"]{height:42px;width:auto}@keyframes marqueeLogos{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.policy{position:relative;overflow:hidden;background:linear-gradient(180deg,#fbfcff 0%,#f3f6fa 100%);padding:44px 0 74px}.policy-title{position:relative;z-index:1;max-width:970px;margin:0 auto 42px;text-align:center;font-size:25px;line-height:1.55;font-weight:950;color:#061b3d;letter-spacing:.2px}.policy-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:30px}.policy-card{height:154px;background:#fff;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;box-shadow:0 16px 35px rgba(18,40,76,.1);transition:.28s}.policy-card:hover{transform:translateY(-8px);box-shadow:0 24px 52px rgba(18,40,76,.15)}.policy-icon{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#3584ff,#2b6cff);box-shadow:0 10px 20px rgba(45,124,255,.22)}.policy-icon img{width:56px;height:56px;object-fit:contain}.policy-card:nth-child(2) .policy-icon{background:linear-gradient(135deg,#8fe7ff,#42b8f3)}.policy-card:nth-child(3) .policy-icon{background:linear-gradient(135deg,#fb31ff,#6019ff)}.policy-card:nth-child(4) .policy-icon{background:linear-gradient(135deg,#2cc849,#0fa637)}.policy-card h3{font-size:21px;font-weight:950;color:#061b3d}.cases{background:#fff;padding:30px 0 62px}.section-heading{text-align:center;margin-bottom:34px}.section-heading h2{font-size:38px;font-weight:950;line-height:1.1;color:#061b3d;letter-spacing:1px}.section-heading p{font-size:14px;color:#27344d;margin-top:10px}.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:46px;max-width:980px;margin:0 auto}.case-card{position:relative;background:#eeeeff;border-radius:8px;overflow:hidden;box-shadow:0 12px 28px rgba(31,73,125,.11);padding:14px 14px 0;transition:.28s}.case-card:hover{transform:translateY(-7px);box-shadow:0 20px 50px rgba(31,73,125,.17)}.case-image{height:365px;background:rgba(255,255,255,.58);border-radius:7px;display:flex;align-items:flex-start;justify-content:center;overflow:hidden}.case-image img{width:210px;height:auto;object-fit:contain}.view-btn{position:absolute;left:32px;top:323px;background:#2878ff;color:#fff;border-radius:4px;padding:9px 17px;font-size:16px;font-weight:800;box-shadow:0 8px 18px rgba(40,120,255,.22);transition:.2s}.view-btn:hover{transform:translateY(-2px);background:#0f6cff}.case-card p{min-height:86px;padding:21px 12px 16px;font-size:18px;line-height:1.25;color:#081936;font-weight:560}.case-foot{margin:0 -14px;border-top:1px solid rgba(255,255,255,.82);height:54px;display:flex;align-items:center;justify-content:space-between;padding:0 26px;font-size:17px;background:rgba(232,232,255,.76)}.case-foot span{font-weight:800;color:#071b39}.case-foot strong{font-weight:950;color:#2878ff}.join{position:relative;overflow:hidden;background:linear-gradient(180deg,#eeeeee 0%,#d3d3d3 100%);padding:38px 0 50px}.join-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 350px;align-items:center;gap:40px}.join-copy h2{font-size:43px;font-weight:950;letter-spacing:1px;color:#061b3d;line-height:1.08;margin-bottom:14px}.join-sub{font-size:16px;color:#2d3545;line-height:1.65;max-width:760px}.join-alert{margin-top:9px;color:red;font-size:16px;font-weight:950;line-height:1.65}.register-grid{margin-top:18px;display:grid;grid-template-columns:repeat(3,176px);gap:12px 14px}.reg-btn{height:62px;padding:0 13px;border-radius:8px;background:#222133;display:flex;align-items:center;gap:12px;color:#fff;font-size:15px;font-weight:900;line-height:1.25;box-shadow:0 12px 24px rgba(0,0,0,.14),inset 0 1px 0 rgba(255,255,255,.1);transition:.24s}.reg-btn:hover{transform:translateY(-4px);background:#19192a;box-shadow:0 18px 34px rgba(0,0,0,.22),0 0 0 3px rgba(41,124,255,.14)}.reg-btn img{width:68px;max-height:38px;object-fit:contain}.reg-btn img[src*="brand-mk"]{width:58px}.join-phone{align-self:end;justify-self:end}.join-phone img{width:315px;filter:drop-shadow(0 18px 24px rgba(0,0,0,.15));animation:floatPhone 5.6s ease-in-out infinite}.back-top{position:fixed;right:24px;bottom:24px;z-index:35;width:66px;height:66px;border-radius:50%;background:linear-gradient(180deg,#72d2ff,#42afff);color:#fff;font-size:18px;font-weight:950;line-height:1.12;box-shadow:0 14px 30px rgba(40,150,255,.28);transition:.24s;opacity:.93}.back-top:hover{transform:translateY(-5px);opacity:1}.modal{position:fixed;inset:0;z-index:99;display:none;align-items:center;justify-content:center;padding:24px}.modal.active{display:flex}.modal-mask{position:absolute;inset:0;background:rgba(4,12,26,.76);backdrop-filter:blur(8px)}.modal-box{position:relative;z-index:2;max-width:min(560px,96vw);max-height:94vh;background:#fff;border-radius:14px;padding:14px;box-shadow:0 28px 90px rgba(0,0,0,.38);overflow:auto}.modal-box img{width:100%;height:auto}.modal-close{position:sticky;top:8px;float:right;z-index:2;width:42px;height:42px;border-radius:50%;background:#1678ff;color:#fff;font-size:30px;line-height:42px;box-shadow:0 10px 24px rgba(0,0,0,.15)}.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}.reveal.show{opacity:1;transform:none}.delay-1{transition-delay:.12s}.delay-2{transition-delay:.22s}.delay-3{transition-delay:.32s}
@media (min-width:1280px){.container{width:1180px}.hero-inner{grid-template-columns:690px 1fr}.hero-title-img{width:675px}.hero-phone img{width:385px}.case-grid{max-width:1020px}.case-image{height:385px}.view-btn{top:342px}.join-phone img{width:335px}}
@media (max-width:1100px){.container{width:min(100% - 44px,980px)}.hero-inner{grid-template-columns:minmax(0,1fr) 330px;gap:28px}.hero-title-img{width:610px}.hero-actions{grid-template-columns:1fr 1fr}.hero-phone img{width:330px}.case-grid{gap:28px}.join-inner{grid-template-columns:1fr 320px}.register-grid{grid-template-columns:repeat(2,176px)}}
@media (max-width:880px){.container{width:min(100% - 30px,680px)}.site-header{padding:15px 0}.brand img{width:130px}.menu-btn{display:flex}.nav{position:absolute;top:62px;right:15px;left:15px;display:none;flex-direction:column;align-items:stretch;gap:0;border-radius:16px;background:rgba(4,14,22,.92);backdrop-filter:blur(12px);overflow:hidden}.nav.open{display:flex}.nav a{padding:15px 20px;border-bottom:1px solid rgba(255,255,255,.08)}.nav a:after{display:none}.hero{padding:88px 0 88px;min-height:auto}.hero-inner{grid-template-columns:1fr;text-align:center}.hero-copy{padding-top:8px}.hero-title-img{margin:0 auto 20px;width:min(100%,650px)}.hero-desc{font-size:16px;margin:0 auto;text-align:left}.hero-actions{grid-template-columns:1fr;max-width:430px;margin-inline:auto}.cta-btn{height:66px;justify-content:center}.hero-phone{justify-self:center}.hero-phone img{width:min(76vw,330px)}.hero-wave{height:92px}.logo-strip{padding:17px 0}.strip-group{gap:42px;padding-right:42px}.strip-group img{height:34px;max-width:130px}.policy{padding:38px 0 58px}.policy-title{font-size:21px;margin-bottom:30px}.policy-grid{grid-template-columns:repeat(2,1fr);gap:18px}.policy-card{height:168px}.case-grid{grid-template-columns:1fr;max-width:380px}.section-heading h2{font-size:32px}.case-image{height:500px}.case-image img{width:250px}.view-btn{top:445px;left:33px;font-size:16px}.case-card p{font-size:17px;min-height:auto}.join{padding:46px 0 68px}.join-inner{grid-template-columns:1fr}.join-copy h2{font-size:36px}.join-sub,.join-alert{font-size:15px}.register-grid{grid-template-columns:1fr;max-width:380px}.reg-btn{width:100%;height:66px}.join-phone{display:none}.back-top{width:58px;height:58px;font-size:15px;right:14px;bottom:14px}}
@media (max-width:480px){.container{width:calc(100% - 24px)}.hero{padding-bottom:78px}.hero-title-img{width:100%;transform:scale(1.08);transform-origin:center}.hero-desc{font-size:15px;line-height:1.75}.cta-btn{font-size:15px;padding:0 20px}.policy-grid{grid-template-columns:1fr}.policy-card{height:156px}.case-grid{max-width:100%}.case-card{padding:12px 12px 0}.case-image{height:450px}.case-image img{width:225px}.view-btn{top:395px;left:28px;padding:10px 16px}.case-foot{height:58px;font-size:16px}.join-copy h2{font-size:30px}.register-grid{max-width:100%}}


/* v5 联系按钮与注册链接更新 */
.hero-actions button.cta-btn{border:0;text-align:left;}
.btn-icon{overflow:hidden;background:#fff;}
.btn-icon img{width:100%;height:100%;object-fit:cover;border-radius:50%;display:block;}
.cta-btn strong{white-space:normal;}
.copy-contact.copied{filter:brightness(1.08);}