/* 基础与公共组件 */
:root{--black:#071a3d;--white:#fff;--muted:#a5b9d9;--lime:#70b8ff;--line:#254571;--width:1200px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--black);color:var(--white);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,a,summary{-webkit-tap-highlight-color:transparent}
a:focus-visible,summary:focus-visible{outline:3px solid #2d8cff;outline-offset:6px}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,p{margin:0}
h2{font-size:clamp(30px,3.4vw,46px);line-height:1.3;letter-spacing:-1.8px;font-weight:800}
h3{font-size:21px;line-height:1.4}
.section-wrap{width:min(var(--width),calc(100% - 96px));margin-inline:auto}
.eyebrow{font-size:13px;letter-spacing:2px;color:var(--muted);margin-bottom:23px}
.button-group{display:flex;flex-wrap:wrap;gap:14px}
.button{min-height:54px;padding:14px 26px;display:inline-flex;align-items:center;justify-content:center;gap:17px;border-radius:40px;font-weight:700;font-size:16px;transition:transform .2s,background .2s}
.button:hover{transform:translateY(-3px)}
.button-white{background:white;color:#071a3d}.button-white:hover{background:var(--lime)}
.button-dark{background:#153768;color:white}.button-dark:hover{background:#224f8b}
.button-outline{border:1px solid #6489ba}.button-outline:hover{background:#173961}
.section-description{font-size:17px;line-height:1.9;color:#aac0de;margin:25px 0 32px;max-width:490px}
.skip-link{position:fixed;top:-100px;left:20px;padding:12px;background:white;color:black;z-index:100}.skip-link:focus{top:8px}
/* 顶部导航 */
.site-header{min-height:76px;padding:0 32px;display:flex;align-items:center;gap:34px;border-bottom:1px solid #1e3d69;background:#071a3d;position:relative;z-index:10}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:27px;font-weight:900;white-space:nowrap;letter-spacing:-1px}
.brand-mark{width:27px;height:27px;display:inline-block;background:linear-gradient(currentColor,currentColor) 0 0/9px 9px,linear-gradient(currentColor,currentColor) 100% 0/9px 9px,linear-gradient(currentColor,currentColor) 50% 50%/9px 9px,linear-gradient(currentColor,currentColor) 0 100%/9px 9px,linear-gradient(currentColor,currentColor) 100% 100%/9px 9px;background-repeat:no-repeat}
.demo-label{font-size:10px;font-weight:400;color:#adc2df;letter-spacing:0;border-left:1px solid #484848;padding-left:9px;margin-left:3px}
.desktop-nav{display:flex;gap:25px;font-size:13px}.desktop-nav a:hover,.header-actions>a:hover{color:var(--lime)}
.header-actions{display:flex;align-items:center;gap:20px;margin-left:auto;font-size:13px}.outline-button{border:1px solid #fff;border-radius:30px;padding:4px 14px}.download-link{font-size:26px}
.mobile-menu{display:none}
/* 首屏与手机示意 */
.hero{display:grid;grid-template-columns:1.12fr 1fr;align-items:center;min-height:710px;gap:55px;padding-block:60px}
.hero h1{font-size:clamp(40px,4.6vw,64px);line-height:1.25;letter-spacing:-2.5px;font-weight:800}.hero-description{font-size:18px;color:#adc2df;margin:26px 0 34px;line-height:1.8}.hero-note{font-size:11px;color:#9db6d7;margin-top:20px}
.hero-visual{position:relative;min-height:560px;display:flex;justify-content:center;align-items:center;isolation:isolate}
.phone{width:280px;border:1px solid #526886;border-radius:40px;padding:18px 17px 12px;background:#0a2146;box-shadow:0 0 0 5px #123365,0 35px 65px #000;transform:rotate(7deg);position:relative}
.phone-camera{position:absolute;top:12px;left:calc(50% - 40px);width:80px;height:19px;border-radius:20px;background:#000}.phone-top{display:flex;justify-content:space-between;font-size:9px;margin:0 9px 25px}.pair{display:flex;justify-content:space-between;font-size:14px;font-weight:bold}.phone-tabs{display:flex;gap:23px;font-size:10px;color:#9db6d7;margin-top:17px;border-bottom:1px solid #173961;padding-bottom:9px}.phone-tabs .selected{color:#fff}.quote{padding:16px 0}.quote strong{display:block;color:var(--lime);font-size:28px;line-height:1.1;letter-spacing:-.8px}.quote>span{font-size:9px;color:#adc2df}.quote b{color:var(--lime);margin-left:8px}.chart-period{display:flex;justify-content:space-between;font-size:9px;color:#adc2df;padding-bottom:8px}.chart{width:100%}.order-book{display:grid;grid-template-columns:1fr 1fr;font-size:9px;gap:4px 14px;margin-top:8px}.order-book span:nth-child(even){text-align:right}.order-book>span:nth-child(-n+2){color:#9db6d7;font-size:8px}.order-book b{color:var(--lime);font-weight:400}.phone-buttons{display:flex;gap:8px;margin-top:14px;font-size:12px;font-weight:bold;text-align:center}.phone-buttons span{width:50%;background:var(--lime);color:#10264a;border-radius:20px;padding:6px}.phone-buttons span+span{background:#ec7be2}.sample-label{font-size:8px;text-align:center;color:#718bab;margin-top:8px}
.orbit{position:absolute;width:430px;height:430px;border:1px solid #1b4378;border-radius:50%;z-index:-1}.orbit-two{width:520px;height:520px;border-style:dashed;opacity:.55}.floating-label{position:absolute;bottom:10px;right:0;padding:10px 15px;background:#103567;border:1px solid #264d7e;border-radius:5px;font-size:9px;letter-spacing:1px;transform:rotate(-4deg)}.floating-label i{display:inline-block;width:6px;height:6px;background:var(--lime);border-radius:50%;margin-right:6px}
.feature-strip{display:flex;align-items:center;justify-content:space-between;padding:32px 0 45px;border-top:1px solid var(--line);gap:20px}.feature-strip>span{font-size:13px;color:#a2b9d8}.feature-strip strong{font-size:21px;letter-spacing:1px}.feature-strip strong span{font-size:11px;font-weight:400;color:#a5b9d5;margin-left:14px;letter-spacing:0}
/* 内容区 */
.light-section{background:#fff;color:#10264a;padding:95px 0}.light-section .eyebrow{color:#567398}.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;margin-top:60px}.line-icon{display:flex;width:64px;height:64px;align-items:center;justify-content:center;font-size:49px;line-height:1;margin-bottom:25px}.security-grid p{font-size:14px;color:#526886;line-height:1.9;margin-top:15px}.text-link{display:inline-block;margin-top:17px;font-size:13px;border-bottom:1px solid #a5b9d5}
.market-section{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;padding-block:115px}.coin-art{height:330px;position:relative}.coin{display:flex;align-items:center;justify-content:center;border-radius:50%;position:absolute;font-family:Arial,sans-serif;box-shadow:8px 9px 0 #264d7e,14px 18px 35px #000;border:2px solid #ddd}.coin-btc{width:190px;height:190px;left:24px;top:25px;background:#fafafa;color:black;font-size:125px;transform:rotate(-18deg);z-index:2}.coin-eth{width:145px;height:145px;right:0;top:0;background:#adc2df;color:#10264a;font-size:100px;transform:rotate(20deg)}.coin-usdt{width:125px;height:125px;right:65px;bottom:35px;background:var(--lime);color:#10264a;font-size:82px;border-color:var(--lime);transform:rotate(15deg);z-index:3}.coin-caption{position:absolute;bottom:-10px;left:35px;color:#526886;letter-spacing:3px;font-size:10px}
.products{background:#f1f6ff}.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:45px}.product-card{display:flex;flex-direction:column;background:white;border:1px solid #d7e3f5;border-radius:10px;padding:26px;transition:transform .2s,border-color .2s}.product-card:hover{transform:translateY(-5px);border-color:#718bab}.product-number{color:#718bab;font-size:10px;letter-spacing:1.5px}.product-symbol{font-size:70px;line-height:1.7;margin:10px 0}.product-card p{font-size:13px;color:#526886;margin:14px 0 28px}.card-link{display:flex;justify-content:space-between;font-size:13px;font-weight:bold;margin-top:auto}
.professional{text-align:center;padding-top:100px;overflow:hidden}.professional .section-description{margin-inline:auto}.terminal-art{margin:55px auto 0;border:1px solid #365d8c;border-bottom:0;border-radius:14px 14px 0 0;background:#10264a;max-width:860px;padding:20px 25px 0;text-align:left}.terminal-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #333;padding-bottom:15px;font-size:12px;color:#adc2df}.brand-mini{font-size:24px;font-weight:900;color:#fff}.terminal-body{display:grid;grid-template-columns:1fr 3fr 1fr;gap:25px;height:275px;overflow:hidden;padding-top:22px}.terminal-sidebar{color:#718bab;font-size:11px;line-height:3.7}.terminal-body img{width:100%}.terminal-orders{font-size:10px;color:#adc2df;line-height:3}.terminal-orders span{display:block;color:var(--lime)}
.faq-wrap{max-width:880px}.faq h2{text-align:center;margin-bottom:42px}.faq details{border-bottom:1px solid #d7e3f5}.faq summary{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:25px 0;cursor:pointer;font-size:18px;list-style:none}.faq summary::-webkit-details-marker,.mobile-menu summary::-webkit-details-marker{display:none}.faq summary::after{content:'+';font-size:27px;font-weight:300}.faq details[open] summary::after{content:'−'}.faq details p{padding:0 36px 25px 0;color:#526886;font-size:14px;line-height:1.9}.faq p a{text-decoration:underline}
.site-footer{padding-block:64px 28px}.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:35px}.footer-top p{font-size:14px;margin-top:17px}.footer-top small{color:#718bab;font-size:10px}.footer-top h2{font-size:14px;letter-spacing:0;margin-bottom:20px}.footer-top nav a{display:block;font-size:12px;color:#a5b9d5;margin-top:12px}.footer-top nav a:hover{color:#fff}.footer-cta .button{font-size:13px;min-height:45px}.footer-bottom{border-top:1px solid #254571;margin-top:50px;padding-top:22px;color:#a2b9d8;font-size:11px}.footer-bottom p+p{margin-top:6px}
/* 平板与移动端 */
@media(min-width:1440px){.hero{min-height:760px}}
@media(max-width:1100px){.site-header{gap:20px;padding-inline:24px}.desktop-nav{gap:17px}.demo-label{display:none}.hero{gap:25px}.hero h1{font-size:48px}.orbit-two{width:400px;height:400px}.orbit-one{width:330px;height:330px}.security-grid{gap:22px}.product-card{padding:20px}.feature-strip strong span{display:block;margin-left:0}.coin-btc{left:0}.coin-usdt{right:25px}}
@media(max-width:800px){.section-wrap{width:calc(100% - 40px)}.site-header{min-height:66px;padding:0 20px;gap:18px}.brand{font-size:24px}.desktop-nav,.download-link{display:none}.header-actions{gap:13px}.mobile-menu{display:block}.mobile-menu summary{list-style:none;cursor:pointer;font-size:24px}.mobile-menu nav{position:absolute;left:0;right:0;top:66px;background:#0b2854;padding:16px 24px;border-bottom:1px solid #444}.mobile-menu nav a{display:block;padding:10px 0;font-size:15px}.hero{grid-template-columns:1fr;gap:22px;padding-top:50px;padding-bottom:30px;text-align:center}.hero h1{font-size:clamp(36px,7.3vw,52px);letter-spacing:-1.5px}.desktop-break{display:none}.hero-description{font-size:16px;margin:22px 0 27px}.hero-description br{display:none}.button-group{justify-content:center}.hero-visual{min-height:565px;overflow:hidden}.hero-note{font-size:10px}.floating-label{right:calc(50% - 160px)}.feature-strip{flex-wrap:wrap;justify-content:space-around;text-align:center;padding-block:24px 30px}.feature-strip>span{width:100%}.feature-strip strong{font-size:17px}.light-section{padding:65px 0}.security-grid{grid-template-columns:repeat(2,1fr);gap:38px 25px;margin-top:40px}.security-grid h3{font-size:18px}.security-grid p{font-size:13px}.market-section{grid-template-columns:1fr;padding-block:65px;gap:42px}.coin-art{width:330px;max-width:100%;margin:auto}.product-grid{grid-template-columns:repeat(2,1fr)}.professional{padding-top:65px}.terminal-art{padding:15px 15px 0}.terminal-body{grid-template-columns:1fr 3fr;height:220px;gap:15px}.terminal-orders{display:none}.faq summary{font-size:16px;padding:22px 0}.footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px}.footer-top nav a{overflow-wrap:anywhere}.footer-cta .button{padding:11px 17px}}
@media(max-width:420px){.hero h1{font-size:35px}.button{padding:13px 19px;font-size:14px;gap:9px}.hero .eyebrow{font-size:11px}.hero-visual{min-height:550px}.product-grid{gap:12px}.product-card{padding:17px}.product-card h3{font-size:19px}.product-number{font-size:9px;letter-spacing:.5px}.product-symbol{font-size:55px}.terminal-sidebar{display:none}.terminal-body{grid-template-columns:1fr}.security-grid{gap:30px 18px}.feature-strip strong{font-size:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}


/* 防止装饰元素与亚像素舍入产生横向滚动 */
html{overflow-x:clip}

/* 蓝色主题及绿色 App 下载按钮 */
body{background:linear-gradient(135deg,#071a3d 0%,#0b2e63 55%,#071a3d 100%)}
.site-header{background:#081e45}
.hero-visual{background:radial-gradient(ellipse at center,rgba(40,126,245,.18),transparent 70%)}
.light-section h2,.light-section h3{color:#102d59}
.light-section .line-icon,.light-section .text-link{color:#246cdb}
.light-section .product-number{color:#526886}
.phone{box-shadow:0 0 0 5px #163866,0 35px 65px #041129}
.button-download,.footer-cta .button-download{background:#21c568;color:#052a17;border:1px solid #21c568;box-shadow:0 6px 22px rgba(33,197,104,.18)}
.button-download:hover,.footer-cta .button-download:hover{background:#41dc80;border-color:#41dc80;color:#052a17}
/* 第二版：居中首屏、横向交易面板与分栏内容 */
body{background:#0755dc}
.site-header{background:#0648be;border-color:#3479e8}
.hero{display:flex;flex-direction:column;gap:42px;min-height:0;padding:76px 0 54px;text-align:center}
.hero-copy{max-width:960px}
.hero .eyebrow{color:#c2e1ff}
.hero h1{font-size:clamp(40px,4.8vw,66px);letter-spacing:-2px}
.desktop-break{display:none}
.hero-description{color:#d6e8ff;margin:22px 0 28px}
.hero-description br{display:none}
.button-group{justify-content:center}
.hero-note{color:#c2dcff}
.hero-visual{width:100%;min-height:0;padding:18px 0 30px;background:none}
.orbit{display:none}
.phone{display:grid;grid-template-columns:1fr 1fr;column-gap:30px;width:min(850px,100%);padding:28px 34px;background:#07378c;border:1px solid #649cff;border-radius:20px;transform:none;text-align:left;box-shadow:0 18px 60px #00358a66}
.phone-camera,.phone-top{display:none}
.pair{grid-column:1/-1;font-size:18px}
.phone-tabs{grid-column:1/-1;border-color:#3768aa;margin-top:12px;padding-bottom:14px}
.quote{grid-column:1;grid-row:3;padding:22px 0 14px}
.quote strong{color:#8cd7ff;font-size:34px}
.quote>span{color:#c1d8ff}
.chart-period{grid-column:1;grid-row:4;color:#c1d8ff}
.chart{grid-column:1;grid-row:5/8;max-height:230px;object-fit:fill;border-radius:8px}
.order-book{grid-column:2;grid-row:3/6;align-content:center;gap:16px;font-size:13px;margin:0}
.order-book>span:nth-child(-n+2){font-size:11px;color:#b4d1ff}
.phone-buttons{grid-column:2;grid-row:6;margin-top:18px;font-size:14px}
.phone-buttons span{padding:10px}
.sample-label{grid-column:2;grid-row:7;color:#bdd7ff;font-size:10px;margin-top:14px}
.floating-label{bottom:0;right:calc(50% - 170px);background:#0d43a0;border-color:#5a91ea;transform:none;color:#e0edff}
.feature-strip{background:#0346bd;border:1px solid #387eeb;border-radius:16px;padding:26px 36px;margin-bottom:62px}
.feature-strip>span,.feature-strip strong span{color:#d0e5ff}
.light-section{background:#edf5ff;padding:80px 0}
#security>.section-wrap{display:grid;grid-template-columns:1fr 1.75fr;column-gap:60px;align-items:start}
#security .eyebrow{grid-column:1;margin-top:8px}
#security h2{grid-column:1;font-size:40px}
.security-grid{grid-column:2;grid-row:1/4;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:0}
.security-grid article{padding:26px;background:#fff;border:1px solid #cde0ff;border-radius:16px}
.line-icon{font-size:38px;width:44px;height:44px;margin-bottom:18px}
.market-section{grid-template-columns:1fr 1.2fr;padding-block:85px;gap:80px}
.market-section>div:first-child{grid-column:2;grid-row:1}
.coin-art{grid-column:1;grid-row:1}
.market-section .eyebrow,.professional .eyebrow{color:#b9dcff}
.section-description{color:#d0e5ff}
.coin-caption{color:#bedbff}
.products{background:#dfedff}
.products>.section-wrap>h2,.products>.section-wrap>.eyebrow{text-align:center}
.product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.product-card{display:grid;grid-template-columns:1fr 100px;gap:12px 20px;padding:30px 34px;border-radius:16px;border-color:#c3dbff}
.product-number{grid-column:1;grid-row:1}
.product-symbol{grid-column:2;grid-row:1/5;align-self:center;text-align:center;margin:0;color:#1873ed;font-size:76px}
.product-card h3{grid-column:1;grid-row:2}
.product-card p{grid-column:1;grid-row:3;margin:0;max-width:340px}
.card-link{grid-column:1;grid-row:4;margin-top:8px;color:#1462cf;justify-content:flex-start;gap:24px}
.professional{display:grid;grid-template-columns:1fr 1.3fr;column-gap:55px;text-align:left;padding-block:86px}
.professional>.eyebrow,.professional>h2,.professional>.section-description,.professional>.button{grid-column:1}
.professional h2{font-size:38px}
.professional .section-description{margin-inline:0}
.professional>.button{justify-self:start}
.terminal-art{grid-column:2;grid-row:1/5;align-self:center;width:100%;margin:0;background:#073b9d;border-color:#73aaff;border-radius:16px;padding-bottom:20px;transform:rotate(-2deg)}
.terminal-top{border-color:#4679c3}
.terminal-body{grid-template-columns:1fr 3fr;height:245px}
.terminal-orders{display:none}
.terminal-sidebar{color:#b9d8ff}
.faq-wrap{max-width:var(--width);display:grid;grid-template-columns:1fr 2fr;gap:0 70px}
.faq h2{grid-column:1;grid-row:1/5;text-align:left;margin:12px 0 0}
.faq details{grid-column:2;border-color:#bcd5f7}
.site-footer{padding-top:50px}
.footer-bottom{border-color:#4388ed;color:#c1dcff}
.footer-top nav a,.footer-top small{color:#c1dcff}
@media(max-width:1000px){#security>.section-wrap{column-gap:30px;grid-template-columns:1fr 2fr}.professional{gap:30px}.professional h2{font-size:32px}.product-card{padding:25px;grid-template-columns:1fr 65px}.product-symbol{font-size:58px}.market-section{gap:40px}}
@media(max-width:800px){.hero{padding:48px 0 36px;gap:26px}.hero h1{font-size:clamp(34px,6vw,48px);letter-spacing:-1px}.hero-visual{overflow:visible}.phone{padding:22px;gap:0 18px}.order-book{font-size:11px;gap:12px}.quote strong{font-size:28px}.feature-strip{padding:24px 20px;margin-bottom:40px}.light-section{padding:55px 0}#security>.section-wrap{display:block}#security h2{font-size:32px}.security-grid{margin-top:30px}.security-grid article{padding:22px}.market-section{grid-template-columns:1fr;padding-block:55px;gap:30px}.market-section>div:first-child{grid-column:1;grid-row:1}.coin-art{grid-column:1;grid-row:2}.professional{display:block;padding-block:55px}.professional>.button{margin-bottom:35px}.terminal-art{transform:none}.terminal-body{height:230px}.faq-wrap{display:block}.faq h2{margin:0 0 25px}.product-card{padding:23px;grid-template-columns:1fr}.product-symbol{display:none}.footer-top{gap:28px}}
@media(max-width:520px){.hero-description{font-size:15px}.hero-description br{display:block}.hero-visual{padding-bottom:25px}.phone{grid-template-columns:1fr;padding:24px;border-radius:18px}.pair,.phone-tabs,.quote,.chart-period,.chart,.order-book,.phone-buttons,.sample-label{grid-column:1;grid-row:auto}.chart{height:190px;max-height:none}.order-book{margin-top:18px;gap:7px 15px}.phone-buttons{margin-top:15px}.phone-buttons span{width:50%}.sample-label{margin-top:10px}.security-grid,.product-grid{grid-template-columns:1fr}.security-grid article{display:grid;grid-template-columns:44px 1fr;gap:8px 17px}.security-grid .line-icon{grid-column:1;grid-row:1/4;margin:0}.security-grid h3,.security-grid p,.security-grid a{grid-column:2}.security-grid p,.security-grid a{margin-top:0}.product-card{grid-template-columns:1fr 60px}.product-symbol{display:block;font-size:52px}.hero-note{font-size:10px}.feature-strip strong{font-size:14px}.professional h2{font-size:30px}.terminal-body{grid-template-columns:1fr}.coin-art{width:300px}.footer-cta .button{font-size:12px}}