:root{
    --brand:#1e5eff;
    --brand-dark:#0a3bbf;
    --brand-deep:#0a1f44;
    --accent:#fe9732;
    --accent-soft:#f5851f;
    --ink:#16213a;
    --muted:#5b6577;
    --line:#e6ebf3;
    --bg:#ffffff;
    --bg-soft:#f4f7fd;
    --radius:16px;
    --shadow:0 18px 40px -20px rgba(10,31,68,.35);
    --maxw:1160px;
    --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    --font-en:"Sora","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* 顶部提示条 */
.topbar{background:var(--brand-deep);color:#cdd8f5;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;padding:8px 24px;max-width:var(--maxw);margin:0 auto}
.topbar-hide{opacity:.8}

/* 头部 */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line);transition:all .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900}
.logo-mark{flex:0 0 auto;height:40px;width:auto;display:block}
.logo-text{font-size:22px;letter-spacing:1px;color:var(--ink)}
.nav{display:flex;gap:30px;margin-left:auto;margin-right:24px}
.nav a{font-size:15px;color:var(--ink);font-weight:500;position:relative;padding:6px 0;transition:color .2s}
.nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .25s}
.nav a:hover{color:var(--brand)}
.nav a:hover::after{width:100%}
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:700;border-radius:999px;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;border:none;font-family:var(--font)}
.btn-hero{background:linear-gradient(135deg,var(--accent),var(--accent-soft));color:#fff;padding:15px 38px;font-size:17px;box-shadow:0 14px 28px -12px rgba(255,94,26,.8)}
.btn-hero:hover{transform:translateY(-3px)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.55);padding:15px 32px;font-size:17px}
.btn-ghost:hover{background:rgba(255,255,255,.24)}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.menu-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* 首屏 */
.hero{position:relative;overflow:hidden;color:#fff;padding:90px 0 110px}
.hero-bg{position:absolute;inset:0;background:
   radial-gradient(900px 500px at 85% -10%,rgba(255,138,43,.35),transparent 60%),
   radial-gradient(800px 600px at 10% 20%,rgba(30,94,255,.55),transparent 55%),
   linear-gradient(135deg,#0a1f44 0%,#0d2c6e 45%,#143b8f 100%)}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:26px 26px;opacity:.35}
.hero-inner{position:relative;display:flex;align-items:center;gap:60px;justify-content:space-between}
.hero-content{flex:1;max-width:580px}
.hero-eyebrow{display:inline-block;font-size:14px;letter-spacing:3px;color:#a9c0ff;font-weight:600;border:1px solid rgba(169,192,255,.4);padding:6px 16px;border-radius:999px;margin-bottom:22px}
.hero-title{font-size:84px;font-weight:900;line-height:1;letter-spacing:4px;background:linear-gradient(180deg,#fff,#cfe0ff);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 10px 40px rgba(0,0,0,.2)}
.hero-sub{font-size:20px;font-weight:600;margin:18px 0 14px;color:#eaf1ff}
.hero-desc{font-size:16px;color:#c5d4f2;max-width:480px}
.hero-desc b{color:#ffd0b0;font-weight:800}
.hero-actions{display:flex;gap:16px;margin:32px 0 28px;flex-wrap:wrap}
.hero-tags{display:flex;gap:12px;flex-wrap:wrap;list-style:none}
.hero-tags li span{display:inline-block;font-size:13px;color:#dce7ff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);padding:6px 14px;border-radius:999px}

/* 手机模型 */
.phone{position:relative;width:260px;height:520px;background:#0b1730;border-radius:38px;padding:12px;box-shadow:0 30px 60px -20px rgba(0,0,0,.55),inset 0 0 0 2px rgba(255,255,255,.06)}
.phone-notch{position:absolute;top:14px;left:50%;transform:translateX(-50%);width:90px;height:18px;background:#0b1730;border-radius:0 0 14px 14px;z-index:3}
.phone-screen{width:100%;height:100%;background:linear-gradient(180deg,#eef3ff,#f7faff);border-radius:28px;overflow:hidden;padding:30px 16px 16px;display:flex;flex-direction:column;gap:12px;color:var(--ink)}
.phone-float{animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.app-top{display:flex;flex-direction:column;gap:2px}
.app-greet{font-size:11px;color:var(--muted)}
.app-name{font-size:18px;font-weight:900;color:var(--brand-dark)}
.app-card{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:6px;box-shadow:0 10px 20px -10px rgba(30,94,255,.7)}
.app-label{font-size:11px;opacity:.85}
.app-amount{font-size:30px;font-weight:900;font-family:var(--font-en);letter-spacing:1px}
.app-bar{height:6px;background:rgba(255,255,255,.25);border-radius:99px;overflow:hidden}
.app-bar i{display:block;height:100%;background:#ffd0b0;border-radius:99px}
.app-hint{font-size:10px;opacity:.85}
.app-row{display:flex;gap:8px}
.app-mini{flex:1;background:#fff;border-radius:12px;padding:8px 4px;text-align:center;box-shadow:0 6px 14px -10px rgba(10,31,68,.4)}
.app-mini b{display:block;font-size:15px;font-weight:900;color:var(--brand-dark);font-family:var(--font-en)}
.app-mini b span{font-size:10px;font-family:var(--font)}
.app-mini small{font-size:10px;color:var(--muted)}
.app-cta{margin-top:auto;background:linear-gradient(135deg,var(--accent),var(--accent-soft));color:#fff;text-align:center;font-weight:800;padding:12px;border-radius:12px;font-size:14px}
.app-list{display:flex;flex-direction:column;gap:8px}
.app-item{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--ink);background:#fff;border-radius:10px;padding:8px 10px}
.dot{width:10px;height:10px;border-radius:50%;background:#d4dcec}
.dot.ok{background:#22c55e}

.hero-scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);width:26px;height:42px;border:2px solid rgba(255,255,255,.5);border-radius:14px;display:flex;justify-content:center}
.hero-scroll span{width:4px;height:8px;background:#fff;border-radius:2px;margin-top:7px;animation:scrolldot 1.6s infinite}
@keyframes scrolldot{0%{opacity:0;transform:translateY(0)}40%{opacity:1}100%{opacity:0;transform:translateY(12px)}}

/* 通用区块 */
.section{padding:96px 0}
.section-soft{background:var(--bg-soft)}
.section-dark{background:linear-gradient(135deg,#0a1f44,#102a63)}
.section-tag{display:inline-block;font-family:var(--font-en);font-size:13px;letter-spacing:2px;font-weight:700;color:var(--brand);text-transform:uppercase;margin-bottom:12px}
.section-dark .section-tag{color:#7fa2ff}
.section-title{font-size:38px;font-weight:900;letter-spacing:1px;margin-bottom:14px}
.section-header{text-align:center;margin-bottom:54px}
.section-header .section-tag{margin-bottom:14px}
.section-sub{color:var(--muted);font-size:16px;max-width:640px;margin:0 auto}
.section-dark .section-title{color:#fff}
.section-dark .section-sub{color:#b9c8ee}

/* 关于 */
.about-grid{display:grid;grid-template-columns:1fr;gap:36px;justify-items:center;text-align:center}
.about-lead{font-size:24px;font-weight:800;color:var(--brand-dark);margin:10px 0 18px;line-height:1.4}
.about-body{font-size:16px;color:var(--muted);margin-bottom:30px}
.about-text{max-width:780px;margin:0 auto}
.about-stats{display:flex;gap:30px;flex-wrap:wrap;justify-content:center}
.about-stat strong{display:block;font-size:30px;font-weight:900;color:var(--brand);font-family:var(--font-en)}
.about-stat span{font-size:14px;color:var(--muted)}

/* 产品展示 */
.gallery{display:flex;justify-content:center;align-items:flex-start;gap:22px;flex-wrap:wrap}
.shot{width:200px;max-width:30vw;height:auto;border-radius:30px;box-shadow:0 24px 48px -24px rgba(10,31,68,.5);display:block;background:#0d1326}

/* 产品特色 */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 26px;text-align:center;transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.feature-icon{width:64px;height:64px;margin:0 auto 18px;border-radius:18px;background:linear-gradient(135deg,#eaf1ff,#fef0e8);display:flex;align-items:center;justify-content:center;color:var(--brand)}
.feature-icon svg{width:32px;height:32px}
.feature-card h3{font-size:22px;font-weight:900;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--muted)}

/* 安全保障 */
.guarantee-card{display:flex;align-items:center;gap:24px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:28px 32px;margin-bottom:40px}
.guarantee-mark{width:84px;height:84px;flex:0 0 auto;background:#fff;border-radius:20px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px -12px rgba(0,0,0,.5)}
.guarantee-mark img{height:54px;width:auto;display:block}
.guarantee-tag{display:inline-block;font-size:12px;letter-spacing:1px;color:#ffd0b0;background:rgba(255,138,43,.18);padding:4px 12px;border-radius:99px;margin-bottom:8px;font-weight:700}
.guarantee-info h3{font-size:26px;font-weight:900;color:#fff;margin-bottom:8px}
.guarantee-info p{font-size:15px;color:#c2d1f2;max-width:760px}
.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.security-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:26px 22px}
.security-item h4{font-size:17px;color:#fff;margin-bottom:10px}
.security-item p{font-size:14px;color:#aebde2;margin-bottom:14px;min-height:62px}
.sec-link{font-size:14px;color:#7fa2ff;font-weight:700}
.sec-link:hover{text-decoration:underline}

/* 可点击复制的热线 */
.hotline-copy{cursor:pointer;color:#7fa2ff;font-weight:700}
.hotline-copy:hover{text-decoration:underline}
.footer-contact .hotline-copy{color:#aebde2;font-weight:700}
.footer-contact .hotline-copy:hover{color:#fff}

/* 复制成功提示 */
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%) translateY(20px);background:rgba(10,31,68,.94);color:#fff;font-size:14px;padding:12px 26px;border-radius:999px;box-shadow:0 14px 30px -12px rgba(0,0,0,.55);opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;z-index:200;display:flex;align-items:center;gap:8px}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast::before{content:"";width:18px;height:18px;border-radius:50%;background:#22c55e;flex:0 0 auto;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");background-size:12px;background-position:center;background-repeat:no-repeat}

/* 页脚 */
.footer{background:#0a1f44;color:#aebde2;padding:64px 0 30px;font-size:14px}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .logo-text{color:#fff;-webkit-text-fill-color:#fff}
.footer-brand .logo-mark{height:34px;width:auto}
.footer-brand p{margin-top:14px;line-height:1.7}
.footer-links h4,.footer-contact h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-links a{display:block;color:#aebde2;margin-bottom:10px;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-contact p{margin-bottom:10px;line-height:1.6}
.footer-bottom{padding-top:24px;text-align:center;display:flex;flex-direction:column;gap:8px}
.footer-bottom p{font-size:13px;color:#8aa0cf}
.footer-icp a{color:#8aa0cf;text-decoration:underline}
.footer-disclaimer{max-width:760px;margin:6px auto 0;line-height:1.7;opacity:.85}

/* 返回顶部 */
.back-to-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 12px 24px -10px rgba(30,94,255,.8);opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;z-index:90}
.back-to-top.show{opacity:1;pointer-events:auto}
.back-to-top:hover{transform:translateY(-3px)}

/* 滚动出现动画 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* 协议 / 详情页 */
.docbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
.docbar-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.docbar .logo-text{color:var(--ink);-webkit-text-fill-color:var(--ink)}
.doc-back{font-size:15px;font-weight:600;color:var(--brand)}
.doc-back:hover{text-decoration:underline}
.doc-hero{background:linear-gradient(135deg,#0a1f44,#102a63);color:#fff;padding:60px 0 52px}
.doc-hero h1{font-size:40px;font-weight:900;margin-bottom:12px}
.doc-hero p{color:#b9c8ee;font-size:16px;max-width:680px}
.doc-update{font-size:13px;color:#9aa6bd;margin-top:18px}
.doc-body{padding:60px 0 80px}
.doc-body .container{max-width:880px}
.legal-block{margin-bottom:38px}
.legal-block h2{font-size:23px;font-weight:900;color:var(--brand-dark);margin-bottom:14px;padding-left:14px;border-left:4px solid var(--accent);line-height:1.3}
.legal-block p{font-size:15px;color:var(--muted);margin-bottom:12px;line-height:1.85}
.legal-block ul{margin:0 0 12px 22px;color:var(--muted);font-size:15px;line-height:1.95}
.legal-block li{margin-bottom:6px}
.doc-note{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:18px 22px;font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:40px}

/* 响应式 */
@media(max-width:680px){
    .doc-hero h1{font-size:30px}
    .legal-block h2{font-size:20px}
}
@media(max-width:980px){
    .hero-inner{flex-direction:column;text-align:center;gap:40px}
    .hero-content{max-width:100%}
    .hero-tags{justify-content:center}
    .hero-actions{justify-content:center}
    .about-grid{grid-template-columns:1fr;gap:36px}
    .gallery{gap:16px}
    .feature-grid{grid-template-columns:repeat(2,1fr)}
    .security-grid{grid-template-columns:repeat(2,1fr)}
    .footer-main{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
    .topbar-hide{display:none}
    .nav{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;gap:0;margin:0;padding:8px 0;box-shadow:0 20px 30px -20px rgba(10,31,68,.4);transform:translateY(-120%);transition:transform .3s;z-index:99;border-bottom:1px solid var(--line)}
    .nav.open{transform:translateY(0)}
    .nav a{padding:14px 24px;border-bottom:1px solid var(--line)}
    .nav a::after{display:none}
    .menu-toggle{display:flex}
    .hero-title{font-size:60px}
    .section{padding:64px 0}
    .section-title{font-size:30px}
    .feature-grid,.security-grid{grid-template-columns:1fr}
    .gallery{gap:14px}
    .shot{width:140px}
    .footer-main{grid-template-columns:1fr;gap:28px}
    .guarantee-card{flex-direction:column;text-align:center}
}