:root{
    --main-red: rgb(213, 5, 5);
    --deep-red: rgb(175, 0, 0);
    --text: #202020;
    --muted: #666;
    --light: #f6f6f6;
    --line: #e8e8e8;
    --dark: #111;
    --white: #fff;
    --shadow: 0 12px 30px rgba(0,0,0,.07);
    --radius: 18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
.container{width:min(1180px, calc(100% - 32px));margin:0 auto}
.top-red-bar{display:none;background:var(--main-red);color:#fff;font-size:13px}
.top-red-inner{height:32px;display:flex;align-items:center;justify-content:space-between;gap:20px;white-space:nowrap}
.site-header{background:#fff;position:relative;z-index:50;border-bottom:1px solid var(--line)}
.mobile-header{height:62px;display:grid;grid-template-columns:72px 1fr 86px;align-items:center;padding:0 14px;background:#fff}
.menu-btn{width:44px;height:42px;border:0;background:#fff;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0;margin:0;cursor:pointer}
.menu-btn span{display:block;width:24px;height:2px;background:#222;border-radius:2px}
.mobile-logo{justify-self:center;display:flex;align-items:center;justify-content:center}
.mobile-logo img{max-height:38px;width:auto}
.top-action,.main-btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:var(--main-red);color:#fff;font-weight:700;border:1px solid var(--main-red);transition:.2s ease;box-shadow:0 8px 18px rgba(213,5,5,.18)}
.top-action{height:36px;padding:0 17px;font-size:14px;justify-self:end}
.top-action:hover,.main-btn:hover{background:var(--deep-red);border-color:var(--deep-red);transform:translateY(-1px)}
.main-btn{min-height:44px;padding:0 26px;font-size:16px}
.mobile-nav{display:none;background:#fff;border-top:1px solid var(--line);padding:8px 16px 14px;grid-template-columns:1fr 1fr;gap:8px}
.mobile-nav.open{display:grid}
.mobile-nav a{background:#f7f7f7;border:1px solid #ededed;border-radius:12px;padding:10px 12px;text-align:center;font-size:14px;color:#333}
.mobile-nav a.active{background:var(--main-red);border-color:var(--main-red);color:#fff;font-weight:700}
.desktop-header{display:none;background:#fff}
.nav-row{height:82px;display:flex;align-items:center;gap:18px}
.brand-logo img{height:48px;width:auto}
.search-mark{width:36px;height:36px;border:1px solid #ddd;border-radius:50%;position:relative;flex:none;background:#fafafa}
.search-mark:before{content:"";width:12px;height:12px;border:2px solid #555;border-radius:50%;position:absolute;left:10px;top:9px}
.search-mark:after{content:"";width:8px;height:2px;background:#555;position:absolute;left:22px;top:23px;transform:rotate(45deg);border-radius:2px}
.desktop-nav{display:flex;align-items:center;gap:6px;margin-left:auto;white-space:nowrap}
.desktop-nav a{padding:9px 14px;border-radius:999px;font-size:15px;color:#333;transition:.2s ease}
.desktop-nav a:hover{color:var(--main-red);background:#fff2f2}
.desktop-nav a.active{background:var(--main-red);color:#fff;font-weight:700}
.desktop-action{margin-left:10px;flex:none}
.section{padding:44px 0}
.section.light{background:var(--light)}
.section-title{margin:0 0 12px;font-size:28px;line-height:1.25;color:#111;letter-spacing:-.5px}
.section-lead{margin:0 auto 26px;color:#555;max-width:820px;font-size:16px}
.center{text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:6px;background:#fff1f1;color:var(--main-red);border:1px solid #ffd8d8;border-radius:999px;padding:5px 12px;font-size:13px;font-weight:700;margin-bottom:12px}
.banner-slider{position:relative;overflow:hidden;background:#f4f4f4}
.banner-track{position:relative;width:100%;height:auto}
.banner-slide{display:none;position:relative}
.banner-slide.active{display:block}
.banner-slide img{width:100%;height:auto;object-fit:cover;background:#eee}
.banner-content{position:absolute;left:6%;bottom:10%;max-width:520px;background:rgba(255,255,255,.88);backdrop-filter:blur(8px);padding:18px 20px;border-radius:18px;box-shadow:var(--shadow)}
.banner-content h1{margin:0 0 8px;font-size:24px;line-height:1.25;color:#111}
.banner-content p{margin:0 0 14px;color:#3b3b3b;font-size:14px;line-height:1.7}
.slider-dots{position:absolute;left:0;right:0;bottom:14px;display:flex;justify-content:center;gap:8px;z-index:4}
.slider-dot{width:9px;height:9px;border-radius:50%;border:0;background:rgba(0,0,0,.25);cursor:pointer;padding:0}
.slider-dot.active{background:var(--main-red);width:24px;border-radius:999px}
.slider-arrow{display:none;position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:42px;height:42px;border-radius:50%;border:0;background:rgba(255,255,255,.9);box-shadow:var(--shadow);font-size:26px;color:#333;cursor:pointer}
.slider-prev{left:20px}.slider-next{right:20px}
.hero-note{background:#fff;border-bottom:1px solid var(--line)}
.hero-note .container{padding:14px 0;display:flex;flex-direction:column;gap:10px;color:#444;font-size:15px}
.category-grid,.service-grid,.focus-grid,.security-grid,.links-grid,.faq-grid,.feature-grid{display:grid;grid-template-columns:1fr;gap:16px}
.category-card,.sports-card,.focus-card,.service-card,.score-card,.info-card,.security-card,.faq-item,.page-card,.notice-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 8px 24px rgba(0,0,0,.045)}
.category-card{position:relative;overflow:hidden}
.category-card:before{content:"";position:absolute;right:-28px;top:-28px;width:86px;height:86px;background:#fff1f1;border-radius:50%}
.card-tag,.status-tag{display:inline-flex;border-radius:999px;background:#fff0f0;color:var(--main-red);font-size:12px;font-weight:700;padding:4px 10px;margin-bottom:10px}
.category-card h3,.focus-card h3,.service-card h3,.score-card h3,.security-card h3,.page-card h3{margin:0 0 10px;font-size:20px;color:#111}
.category-card p,.focus-card p,.service-card p,.score-card p,.security-card p,.page-card p,.info-card p,.notice-box p,.faq-item p{margin:0;color:#555}
.text-link{display:inline-flex;margin-top:14px;color:var(--main-red);font-weight:700;align-items:center;gap:4px}
.text-link:after{content:"›";font-size:20px;line-height:1}
.focus-card{border-top:4px solid var(--main-red)}
.service-card .card-tag{background:var(--main-red);color:#fff}
.split{display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
.split-image{border-radius:24px;overflow:hidden;background:#f1f1f1;box-shadow:var(--shadow)}
.split-image img{width:100%;height:auto;object-fit:cover}
.check-list,.plain-list{display:grid;gap:10px;margin:18px 0 0;padding:0;list-style:none}
.check-list li,.plain-list li{position:relative;padding-left:26px;color:#444}
.check-list li:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--main-red);position:absolute;left:4px;top:.72em}
.plain-list li:before{content:"";position:absolute;left:0;top:.75em;width:14px;height:2px;background:var(--main-red);border-radius:2px}
.score-panel{display:grid;gap:14px;margin-top:18px}
.score-card{background:linear-gradient(180deg,#fff,#fafafa)}
.score-line{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;padding:12px;border-radius:14px;background:#f7f7f7;color:#333;font-weight:700}
.score-line span:nth-child(2){color:var(--main-red)}
.app-showcase{background:#fff7f7;border-top:1px solid #ffe0e0;border-bottom:1px solid #ffe0e0}
.platform-columns{display:grid;grid-template-columns:1fr;gap:18px}
.info-card h3{margin:0 0 12px;color:#111;font-size:22px}
.info-point{padding:14px 0;border-top:1px solid var(--line)}
.info-point:first-of-type{border-top:0;padding-top:0}
.info-point strong{display:block;color:#111;margin-bottom:4px}
.responsible-box{border:1px solid #ffd5d5;background:#fff8f8;border-radius:24px;padding:24px}
.faq-item h3{margin:0 0 8px;font-size:18px;color:#111}
.cta-band{background:var(--main-red);color:#fff;border-radius:26px;padding:28px;text-align:center;overflow:hidden;position:relative}
.cta-band:before{content:"";position:absolute;right:-60px;top:-60px;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.13)}
.cta-band h2{margin:0 0 10px;font-size:26px}
.cta-band p{margin:0 auto 20px;max-width:720px;color:rgba(255,255,255,.9)}
.cta-band .main-btn{background:#fff;color:var(--main-red);border-color:#fff;box-shadow:none}
.page-hero{background:linear-gradient(180deg,#fff7f7 0%,#fff 100%);padding:40px 0 30px;border-bottom:1px solid var(--line)}
.page-hero h1{margin:0 0 14px;font-size:32px;line-height:1.25;color:#111}
.page-hero p{margin:0;color:#555;max-width:880px;font-size:17px}
.breadcrumb{font-size:13px;color:#777;margin-bottom:12px}
.breadcrumb a{color:var(--main-red);font-weight:700}
.page-layout{display:grid;grid-template-columns:1fr;gap:22px}
.content-section{padding:28px 0;border-bottom:1px solid var(--line)}
.content-section h2{margin:0 0 14px;font-size:25px;color:#111}
.content-section p{margin:0 0 14px;color:#4d4d4d}
.notice-box{background:#fff8f8;border-color:#ffd7d7}
.download-steps{counter-reset:step;display:grid;gap:14px;margin:20px 0}
.download-step{counter-increment:step;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 18px 18px 58px;position:relative;box-shadow:0 8px 20px rgba(0,0,0,.04)}
.download-step:before{content:counter(step);position:absolute;left:18px;top:18px;width:28px;height:28px;border-radius:50%;background:var(--main-red);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.table-like{display:grid;gap:12px;margin-top:18px}
.table-row{display:grid;grid-template-columns:1fr;gap:8px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:16px}
.table-row strong{color:#111}.table-row span{color:#555}
.site-footer{background:#1b1b1b;color:#ddd;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:22px;padding:38px 0}
.footer-logo{height:42px;width:auto;margin-bottom:12px}
.site-footer h3{margin:0 0 12px;color:#fff;font-size:17px}
.site-footer p{margin:0;color:#cfcfcf;font-size:14px}
.site-footer a{display:block;color:#ddd;margin:7px 0;font-size:14px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:14px 0;color:#aaa;font-size:13px}
@media (min-width:640px){
    .category-grid,.service-grid,.security-grid,.links-grid,.faq-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}
    .focus-grid{grid-template-columns:repeat(2,1fr)}
    .score-panel{grid-template-columns:repeat(3,1fr)}
    .hero-note .container{flex-direction:row;justify-content:space-between;align-items:center}
}
@media (min-width:900px){
    .top-red-bar{display:block}
    .mobile-header,.mobile-nav{display:none!important}
    .desktop-header{display:block}
    .site-header{border-bottom:0;box-shadow:0 6px 18px rgba(0,0,0,.04)}
    .section{padding:66px 0}
    .section-title{font-size:36px}
    .banner-slide img{height:480px;object-fit:cover}
    .banner-content{padding:28px 32px;bottom:12%;left:calc((100% - 1180px)/2 + 16px);max-width:560px}
    .banner-content h1{font-size:38px}
    .banner-content p{font-size:16px}
    .slider-arrow{display:block}
    .category-grid{grid-template-columns:repeat(3,1fr)}
    .service-grid{grid-template-columns:repeat(3,1fr)}
    .focus-grid{grid-template-columns:repeat(4,1fr)}
    .split{grid-template-columns:1.02fr .98fr;gap:42px}
    .split.reverse{grid-template-columns:.98fr 1.02fr}
    .platform-columns{grid-template-columns:1fr 1fr}
    .security-grid{grid-template-columns:repeat(3,1fr)}
    .faq-grid{grid-template-columns:repeat(2,1fr)}
    .page-hero{padding:56px 0 42px}
    .page-hero h1{font-size:42px}
    .page-layout{grid-template-columns:2fr 1fr;gap:34px;align-items:start}
    .footer-grid{grid-template-columns:2fr 1fr 1fr 1.5fr}
    .table-row{grid-template-columns:180px 1fr}
}
@media (min-width:1100px){
    .desktop-nav a{padding:10px 16px}
    .banner-slide img{height:520px}
}