:root{--bg:#07111f;--bg-2:#0b1626;--panel:#111d2c;--panel-2:#172435;--paper:#f5f8fb;--paper-2:#e9eff5;--white:#ffffff;--ink:#edf7ff;--text:#132033;--body:#354352;--muted:#6d7886;--blue:#1aa8ff;--blue-2:#41d8ff;--blue-deep:#0c6fc7;--cyan:#41d8ff;--silver:#cbd6e2;--gold:#41d8ff;--cream:#eef4fa;--line:rgba(145,181,210,0.22);--line-dark:rgba(255,255,255,0.12);--line-light:rgba(20,43,68,0.12);--shadow:0 14px 34px rgba(17,24,39,0.08);--max:1180px;--font-ui:Arial,"Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;font-family:var(--font-ui)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scrollbar-width:none}
html::-webkit-scrollbar,body::-webkit-scrollbar{display:none;width:0;height:0}
body{margin:0;color:var(--text);background:var(--bg);font-family:var(--font-ui);font-size:15px;font-weight:400;line-height:1.7;letter-spacing:0;overflow-x:hidden;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
.container,.ky-container,.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;overflow:visible;border-bottom:1px solid var(--line-dark);background:rgba(6,14,25,0.94);backdrop-filter:blur(16px)}
.nav-row,.nav-shell{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{width:168px;flex:0 0 168px;display:flex;align-items:center}
.brand img{display:block;width:100%;height:auto}
.main-nav,.nav-links{display:flex;align-items:center;justify-content:center;gap:4px;margin-left:auto}
.main-nav a,.nav-links a{position:relative;min-height:42px;display:inline-flex;align-items:center;padding:8px 10px 12px;color:rgba(237,247,255,0.84);font-size:14px;font-weight:200;white-space:nowrap;transition:color 0.2s ease}
.main-nav a::after,.nav-links a::after{content:"";position:absolute;left:10px;right:10px;bottom:5px;height:3px;border-radius:999px;background:var(--blue-2);transform:scaleX(0);transform-origin:center;transition:transform 0.22s ease}
.main-nav a:hover,.main-nav a.active,.main-nav a.is-active,.nav-links a:hover,.nav-links a.active,.nav-links a.is-active{color:var(--blue-2)}
.main-nav a:hover::after,.main-nav a.active::after,.main-nav a.is-active::after,.nav-links a:hover::after,.nav-links a.active::after,.nav-links a.is-active::after{transform:scaleX(1)}
.entry-btn,.hero-actions a,.app-card a{min-height:40px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-color:var(--blue-2);background:var(--blue-2);border-radius:4px;color:var(--text);font-size:14px;font-weight:100;transition:color 0.22s ease,border-color 0.22s ease,background 0.22s ease}
.site-header .entry-btn{flex:0 0 auto;margin-left:18px}
.entry-btn:hover,.hero-actions a:hover,.app-card a:hover{color:#fff;border-color:var(--blue-2);background:var(--blue-2)}
.menu-btn,.menu-toggle{display:none;width:42px;height:42px;padding:0;border:1px solid var(--line);background:transparent;flex:0 0 auto;margin-left:auto}
.menu-btn::before{content:"";width:18px;height:2px;display:block;margin:0 auto;background:var(--blue-2);box-shadow:0 -6px 0 var(--blue-2),0 6px 0 var(--blue-2)}
.menu-toggle span{display:block;width:20px;height:2px;margin:4px auto;background:var(--blue-2);transition:0.2s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:3px;overflow:hidden;background:rgba(65,216,255,0.08);pointer-events:none}
.scroll-progress__bar{width:100%;height:100%;transform:scaleX(0);transform-origin:left;background:linear-gradient(90deg,rgba(65,216,255,0.18),var(--blue-2),rgba(255,255,255,0.92))}
.page-kicker,.channel-kicker,.section-title span{color:var(--blue-deep);font-size:14px;font-weight:500;text-transform:uppercase}
.page-kicker,.channel-kicker{display:inline-flex;align-items:center;gap:10px;color:var(--blue-2);font-size:13px;font-weight:300;text-transform:uppercase}
.page-kicker::before,.channel-kicker::before{content:"";width:34px;height:2px;border-radius:999px;background:var(--blue-2)}
.page-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.ky-btn,.gold-link,.ghost-link{width:fit-content;min-height:38px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;border-radius:999px;font-size:14px;font-weight:900}
.ky-btn--gold,.gold-link{color:#06111f;background:linear-gradient(135deg,#80ebff,var(--blue-2));box-shadow:0 10px 22px rgba(65,216,255,0.22)}
.ky-btn--line,.ghost-link{color:var(--ink);border:1px solid rgba(65,216,255,0.42);background:rgba(255,255,255,0.04)}
.page-hero{position:relative;overflow:hidden;min-height:640px;color:var(--ink);background:radial-gradient(circle at 78% 12%,rgba(65,216,255,0.22),transparent 26rem),linear-gradient(120deg,#06111f 0%,#0b1728 55%,#172f46 100%)}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,11,20,0.96) 0%,rgba(4,11,20,0.82) 52%,rgba(4,11,20,0.48) 100%)}
.page-hero__inner{position:relative;z-index:1;min-height:640px;display:grid;align-items:center;padding:88px 0 176px}
.page-hero__copy{max-width:860px}
.page-hero h1{max-width:820px;margin:12px 0 18px;color:#ffffff;font-size:clamp(48px,7vw,86px);line-height:1.02;font-weight:800;letter-spacing:0;text-shadow:0 12px 30px rgba(0,0,0,0.34)}
.page-hero p{max-width:820px;margin:0;color:#eef2f6;font-size:15px;font-weight:300;line-height:1.86;text-shadow:0 3px 16px rgba(0,0,0,0.32)}
.waves{position:absolute;left:0;right:0;bottom:-7px;width:100%;height:150px;min-height:150px;max-height:150px;pointer-events:none}
.hero-waves,.page-waves{z-index:2;height:174px;min-height:174px;max-height:174px}
.section-waves{height:205px;min-height:205px;max-height:205px;z-index:1}
.parallax > use{animation:moveForever 25s cubic-bezier(0.55,0.5,0.45,0.5) infinite}
.parallax > use:nth-child(1){animation-delay:-2s;animation-duration:7s;fill:rgba(229,241,249,0.34)}
.parallax > use:nth-child(2){animation-delay:-3s;animation-duration:10s;fill:rgba(229,241,249,0.54)}
.parallax > use:nth-child(3){animation-delay:-4s;animation-duration:13s;fill:rgba(229,241,249,0.78)}
.parallax > use:nth-child(4){animation-delay:-5s;animation-duration:20s;fill:var(--paper)}
.section-parallax > use:nth-child(1){fill:rgba(237,247,255,0.14)}
.section-parallax > use:nth-child(2){fill:rgba(237,247,255,0.22)}
.section-parallax > use:nth-child(3){fill:rgba(237,247,255,0.32)}
.section-parallax > use:nth-child(4),.page-hero .parallax > use:nth-child(4),.sub-section--wave .parallax > use:nth-child(4),.brand-story .parallax > use:nth-child(4),.responsible-cover .parallax > use:nth-child(4),.terms-cover .parallax > use:nth-child(4),.channel-hero .parallax > use:nth-child(4){fill:var(--paper)}
.section{padding:74px 0}
.section-title{max-width:760px;margin:0 auto 34px;text-align:center}
.section-title.align-left{margin-left:0;text-align:left}
.section-title h2{margin:8px 0 10px;color:#101b2b;font-size:clamp(30px,3.1vw,50px);line-height:1.28;font-weight:900;text-transform:uppercase}
.section-title p{margin:0;color:var(--muted);font-weight:100;font-size:14px;}
.light-title h2,.light-title p{color:var(--ink)}
.light-title p{color:rgba(237,247,255,0.72)}
.sub-section{padding:64px 0}
.sub-section--cream{background:var(--cream)}
.sub-section--wave{position:relative;overflow:hidden;padding:76px 0 205px;color:var(--ink);background:radial-gradient(circle at 78% 10%,rgba(65,216,255,0.15),transparent 24rem),linear-gradient(135deg,#07111f,#102235)}
.sub-section--wave > .ky-container,.sub-section--wave > .container{position:relative;z-index:2;min-height:350px;}
.sub-section--wave > .waves{height:210px;min-height:210px}
.page-head,.channel-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;margin-bottom:22px}
.page-head h2,.channel-head h2{margin:8px 0 0;color:var(--text);font-size:clamp(28px,3vw,40px);line-height:1.15;font-weight:800}
.page-head p,.channel-head p{max-width:540px;margin:0;color:#586675;line-height:1.75}
.sub-section--wave .page-head h2,.sub-section--wave .channel-head h2{color:#f4fbff}
.sub-section--wave .page-head p,.sub-section--wave .channel-head p{color:rgba(237,247,255,0.72)}
.page-cta{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:42px 44px;border:1px solid var(--line);border-radius:6px;background:#ffffff;box-shadow:var(--shadow)}
.page-cta h2{margin:0 0 12px;color:var(--text);font-size:38px;line-height:1.2;font-weight:800}
.page-cta p{max-width:760px;margin:0;color:#435468}
.accordion-list{display:grid;gap:12px}
.accordion-item{border:1px solid rgba(0,116,217,0.18);border-radius:6px;background:#ffffff;box-shadow:0 12px 26px rgba(17,24,39,0.04);overflow:hidden}
.accordion-item > button{width:100%;min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 20px;border:0;background:transparent;color:#07111f;font-size:16px;font-weight:800;text-align:left;cursor:pointer}
.accordion-item > button::after{content:"+";color:#0074d9;font-size:24px;line-height:1}
.accordion-item.active > button::after{content:"-"}
.accordion-panel,.accordion-item > div{display:none;padding:0 20px 20px;color:#475569;line-height:1.75}
.accordion-item.active .accordion-panel,.accordion-item.active > div{display:block}
.site-footer{padding:38px 0 30px;color:rgba(237,247,255,0.7);background:#050b14;border-top:1px solid var(--line-dark);text-align:center}
.site-footer strong{display:block;color:var(--gold);margin-bottom:8px;font-weight:500}
.site-footer p{max-width:820px;margin:0 auto;font-weight:300}
.footer-nav{margin-top:26px;padding-top:18px;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 0;border-top:1px solid var(--line-dark)}
.footer-nav a{position:relative;padding:0 14px;color:rgba(237,247,255,0.72);font-size:14px;font-weight:300}
.footer-nav a + a::before{content:"|";position:absolute;left:0;color:rgba(237,247,255,0.34);transform:translateX(-1px)}
.footer-nav a:hover,.footer-nav a.active,.footer-nav a.is-active{color:var(--blue-2)}
.copyright{font-size:13px}
.back-top{position:fixed;right:24px;bottom:24px;z-index:45;padding:0;border:0;color:var(--blue-deep);background:transparent;font-size:34px;line-height:1;cursor:pointer}
.back-top:hover{color:var(--blue-2)}
.reveal{opacity:1;transform:translateY(0);animation:revealIn 0.65s ease both}
.reveal.is-visible,.reveal.in-view{opacity:1;transform:translateY(0)}
.delay-1{transition-delay:0.08s}
.delay-2{transition-delay:0.16s}
.delay-3{transition-delay:0.24s}
@keyframes moveForever{0%{transform:translate3d(-90px,0,0)}
100%{transform:translate3d(85px,0,0)}
}@keyframes revealIn{from{opacity:1;transform:translateY(22px)}
to{opacity:1;transform:translateY(0)}
}@media (max-width:1180px){.brand{width:146px;flex-basis:146px}
.main-nav a,.nav-links a{font-size:13px;padding-inline:7px}
}@media (max-width:1060px){.menu-btn,.menu-toggle{display:grid;place-items:center}
.entry-btn{margin-left:auto}
.main-nav,.nav-links{position:fixed;left:16px;right:16px;top:78px;display:none;grid-template-columns:1fr;gap:6px;margin-left:0;padding:20px 10px;;border:1px solid rgba(65,216,255,0.22);border-radius:8px;background:radial-gradient(circle at 12% 0%,rgba(65,216,255,0.12),#00000094 15rem),linear-gradient(180deg,rgba(9,20,34,0.98),rgb(6 16 29));box-shadow:0 24px 70px rgba(0,0,0,0.42);backdrop-filter:blur(16px)}
.main-nav.is-open,.nav-links.is-open{display:grid}
.main-nav a,.nav-links a{position:relative;width:100%;min-height:46px;display:grid;grid-template-columns:18px 1fr 18px;align-items:center;gap:10px;justify-content:stretch;padding:0 14px;border:1px solid rgba(65,216,255,0.12);border-radius:6px;color:rgba(237,247,255,0.9);background:linear-gradient(90deg,rgba(65,216,255,0.08),rgba(237,247,255,0.035));font-size:14px;text-align:center}
.main-nav a::before,.nav-links a::before{content:"";width:6px;height:6px;justify-self:center;border-radius:999px;background:var(--blue-2);box-shadow:0 0 12px rgba(65,216,255,0.68)}
.main-nav a::after,.nav-links a::after{content:"";position:static;width:8px;height:8px;justify-self:center;border-top:2px solid rgba(65,216,255,0.86);border-right:2px solid rgba(65,216,255,0.86);background:transparent;transform:rotate(45deg)}
.main-nav a:hover,.main-nav a.active,.main-nav a.is-active,.nav-links a:hover,.nav-links a.active,.nav-links a.is-active{color:var(--blue-2);border-color:rgba(65,216,255,0.32);background:linear-gradient(90deg,rgba(65,216,255,0.16),rgba(65,216,255,0.055))}
}@media (max-width:760px){body{font-size:14px}
.container,.ky-container,.footer-inner{width:min(var(--max),calc(100% - 24px))}
.nav-row,.nav-shell{min-height:66px}
.brand{width:158px;flex-basis:158px}
.entry-btn{display:none}
.main-nav,.nav-links{top:75px}
.scroll-progress{height:2px}
.page-hero,.page-hero__inner{min-height:560px}
.page-hero__inner{padding:58px 0 150px}
.page-hero h1{font-size:42px;line-height:1.12}
.section{padding:58px 0}
.section-title,.section-title.align-left{margin-left:0;text-align:left}
.waves,.hero-waves,.page-waves,.section-waves{height:98px;min-height:98px;max-height:98px}
.sub-section{padding:52px 0}
.sub-section--wave{padding:58px 0 155px}
.page-head,.channel-head{display:block}
.page-cta{display:block;padding:28px 22px}
.page-cta h2{font-size:28px}
.page-cta .page-actions{margin-top:18px}
.footer-nav{line-height:2}
.footer-nav a{padding:0 10px}
.back-top{right:18px;bottom:max(20px,env(safe-area-inset-bottom));width:42px;height:54px;display:grid;place-items:center;color:var(--blue);font-size:38px;line-height:1;overflow:visible}
}