*{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:#1f1f1f;background:#f6f6f6;line-height:1.7}
body.no-scroll{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{position:relative;z-index:10;background:#fff;box-shadow:0 4px 18px rgba(0,0,0,.06)}
.mobile-header{height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;background:#fff;border-bottom:3px solid rgb(180,4,4)}
.menu-toggle{width:42px;height:42px;border:0;background:#fff;border-radius:12px;display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center}
.menu-toggle span{width:22px;height:2px;background:#222;border-radius:4px}
.mobile-logo{position:absolute;left:50%;transform:translateX(-50%);height:42px;display:flex;align-items:center}
.mobile-logo img{max-height:34px;width:auto}
.top-action,.main-btn{display:inline-flex;align-items:center;justify-content:center;background:rgb(213,5,5);color:#fff;border-radius:999px;font-weight:700;box-shadow:0 8px 18px rgba(213,5,5,.22);transition:.2s ease}
.top-action{min-width:72px;height:36px;padding:0 16px;font-size:14px}
.main-btn{min-height:46px;padding:0 28px;font-size:16px}
.top-action:hover,.main-btn:hover{background:rgb(180,4,4);transform:translateY(-1px)}
.mobile-nav{display:none;background:#fff;border-bottom:1px solid #eee;padding:8px 16px 16px;box-shadow:0 10px 20px rgba(0,0,0,.08)}
.mobile-nav.open{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-nav a{padding:11px 12px;border-radius:12px;background:#f7f7f7;color:#333;font-weight:650;text-align:center}
.mobile-nav a.active{background:rgba(213,5,5,.1);color:rgb(213,5,5)}
.desktop-header{display:none}
.section{padding:48px 0}
.section.alt{background:#fff}
.section-title{margin:0 0 12px;font-size:28px;line-height:1.25;color:#111}
.section-lead{margin:0 0 26px;color:#555;font-size:16px;max-width:760px}
.kicker{display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;padding:4px 12px;border-radius:999px;background:rgba(213,5,5,.09);color:rgb(213,5,5);font-weight:700;font-size:13px}
.kicker:before{content:"";width:7px;height:7px;border-radius:50%;background:rgb(213,5,5)}
.hero{background:linear-gradient(180deg,#fff 0,#f8f8f8 100%);padding:34px 0 44px}
.hero-grid{display:grid;gap:28px;align-items:center}
.hero h1{font-size:34px;line-height:1.16;margin:0 0 16px;color:#111}
.hero p{margin:0 0 22px;color:#444;font-size:16px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.hero-tags span{background:#fff;border:1px solid #ededed;border-left:3px solid rgb(213,5,5);border-radius:14px;padding:8px 12px;color:#333;font-weight:650;font-size:14px}
.hero-visual{background:#fff;border-radius:24px;padding:12px;box-shadow:0 18px 40px rgba(0,0,0,.08);border:1px solid #eee}
.hero-visual img{border-radius:18px;width:100%;height:auto}
.category-section{background:#fff}
.category-main-grid{display:grid;gap:16px;margin-top:20px}
.category-sub-grid{display:grid;gap:14px;margin-top:14px}
.category-main-card,.category-sub-card,.focus-card,.info-box,.score-card,.security-card,.faq-item,.content-card,.notice-card{background:#fff;border:1px solid #ededed;border-radius:20px;box-shadow:0 10px 26px rgba(0,0,0,.045)}
.category-main-card{padding:24px;min-height:240px;display:flex;flex-direction:column;justify-content:space-between}
.category-sub-card{padding:20px}
.card-tag{display:inline-flex;width:max-content;padding:4px 10px;border-radius:999px;background:rgba(213,5,5,.08);color:rgb(213,5,5);font-size:12px;font-weight:700;margin-bottom:10px}
.category-main-card h3,.category-sub-card h3,.focus-card h3,.info-box h3,.score-card h3,.security-card h3,.content-card h3,.notice-card h3{margin:0 0 10px;color:#111;line-height:1.35}
.category-main-card p,.category-sub-card p,.focus-card p,.info-box p,.score-card p,.security-card p,.content-card p,.notice-card p{margin:0;color:#555}
.text-link{display:inline-flex;align-items:center;margin-top:16px;color:rgb(213,5,5);font-weight:700}
.text-link:after{content:"›";font-size:22px;margin-left:5px;line-height:1}
.focus-grid{display:grid;gap:16px}
.focus-card{padding:22px;position:relative;overflow:hidden}
.focus-card:before{content:"";position:absolute;left:0;top:0;width:6px;height:100%;background:rgb(213,5,5)}
.info-split{display:grid;gap:22px}
.info-column{background:#fff;border-radius:24px;padding:22px;border:1px solid #ededed;box-shadow:0 12px 28px rgba(0,0,0,.05)}
.info-list{display:grid;gap:14px}
.info-box{padding:18px}
.info-image{margin-top:18px;border-radius:20px;overflow:hidden;border:1px solid #eee}
.showcase{display:grid;gap:24px;align-items:center}
.showcase-card{background:#fff;border-radius:26px;padding:24px;border:1px solid #ededed;box-shadow:0 14px 32px rgba(0,0,0,.055)}
.showcase ul,.page-list{padding:0;margin:18px 0 0;list-style:none;display:grid;gap:10px}
.showcase li,.page-list li{padding-left:22px;position:relative;color:#444}
.showcase li:before,.page-list li:before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;background:rgb(213,5,5)}
.showcase-image{border-radius:24px;overflow:hidden;box-shadow:0 16px 36px rgba(0,0,0,.08);border:1px solid #eee;background:#fff;padding:10px}
.score-section{background:#fff}
.score-grid{display:grid;gap:22px;align-items:center}
.score-cards{display:grid;gap:14px}
.score-card{padding:20px}
.score-card strong{display:block;color:rgb(213,5,5);font-size:24px;margin-bottom:4px}
.app-panel{background:#fff;border-radius:28px;padding:24px;border:1px solid #ededed;box-shadow:0 18px 42px rgba(0,0,0,.06);display:grid;gap:20px;align-items:center}
.app-points{display:grid;gap:12px;margin:20px 0}
.app-points span{display:block;padding:12px 14px;border-radius:14px;background:#f8f8f8;border-left:4px solid rgb(213,5,5);color:#444}
.security-grid{display:grid;gap:16px}
.security-card{padding:20px}
.responsible-box{background:#fff;border-left:6px solid rgb(213,5,5);border-radius:18px;padding:24px;box-shadow:0 12px 28px rgba(0,0,0,.05)}
.responsible-box p{margin:0;color:#444}
.faq-list{display:grid;gap:14px}
.faq-item{padding:20px}
.faq-item h3{margin:0 0 8px;font-size:17px;color:#111}
.faq-item p{margin:0;color:#555}
.cta{background:linear-gradient(135deg,rgba(213,5,5,.08),#fff);border-top:1px solid #eee;border-bottom:1px solid #eee}
.cta-card{background:#fff;border-radius:26px;padding:26px;border:1px solid #ededed;box-shadow:0 16px 34px rgba(0,0,0,.055);text-align:center}
.cta-card p{max-width:720px;margin:0 auto 20px;color:#555}
.page-hero{background:#fff;padding:38px 0;border-bottom:1px solid #eee}
.page-hero h1{margin:0 0 14px;font-size:32px;line-height:1.25;color:#111}
.page-hero p{margin:0;max-width:840px;color:#555;font-size:16px}
.page-layout{padding:42px 0}
.content-grid{display:grid;gap:18px}
.content-card{padding:22px}
.notice-card{padding:22px;border-left:5px solid rgb(213,5,5)}
.link-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.link-row a{padding:9px 13px;border-radius:999px;background:#fff;border:1px solid #e7e7e7;color:#333;font-weight:650}
.link-row a:hover{border-color:rgb(213,5,5);color:rgb(213,5,5)}
.steps{counter-reset:step;display:grid;gap:14px;margin-top:18px}
.step{counter-increment:step;background:#fff;border:1px solid #ededed;border-radius:18px;padding:18px 18px 18px 62px;position:relative}
.step:before{content:counter(step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;background:rgb(213,5,5);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.faq-page .faq-item{box-shadow:none}
.site-footer{background:#202020;color:#ddd;padding:42px 0 0}
.footer-grid{display:grid;gap:24px}
.footer-logo img{max-height:42px;width:auto;margin-bottom:14px}
.site-footer p{margin:0;color:#cfcfcf}
.site-footer h3{margin:0 0 12px;color:#fff;font-size:16px}
.site-footer a{display:block;color:#ddd;margin:8px 0}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding:18px 0;display:grid;gap:8px;font-size:13px}
@media (min-width:640px){
    .category-sub-grid,.security-grid,.score-cards{grid-template-columns:repeat(2,1fr)}
    .focus-grid{grid-template-columns:repeat(2,1fr)}
    .content-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:900px){
    .mobile-header,.mobile-nav{display:none}
    .desktop-header{display:block}
    .desktop-top{background:rgb(180,4,4);color:#fff;font-size:13px}
    .desktop-top-inner{height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .desktop-main{background:#fff}
    .desktop-main-inner{height:78px;display:flex;align-items:center;gap:28px}
    .brand-logo img{max-height:46px;width:auto}
    .desktop-nav{display:flex;align-items:center;gap:22px;flex:1}
    .desktop-nav a{font-weight:700;color:#333;padding:26px 0;position:relative;white-space:nowrap}
    .desktop-nav a.active,.desktop-nav a:hover{color:rgb(213,5,5)}
    .desktop-nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:18px;height:3px;background:rgb(213,5,5);border-radius:3px}
    .header-right{display:flex;align-items:center;gap:16px}
    .search-icon{width:34px;height:34px;border:2px solid #ddd;border-radius:50%;position:relative;display:inline-block}
    .search-icon:after{content:"";position:absolute;width:10px;height:2px;background:#bbb;right:-5px;bottom:4px;transform:rotate(45deg);border-radius:2px}
    .hero{padding:58px 0 62px}
    .hero-grid{grid-template-columns:1.02fr .98fr}
    .hero h1{font-size:48px}
    .section{padding:68px 0}
    .section-title{font-size:34px}
    .category-main-grid{grid-template-columns:repeat(4,1fr)}
    .category-sub-grid{grid-template-columns:repeat(4,1fr)}
    .category-main-card:nth-child(1){grid-column:span 1}
    .category-main-card{min-height:300px}
    .info-split{grid-template-columns:1fr 1fr}
    .showcase{grid-template-columns:1fr 1fr}
    .score-grid{grid-template-columns:1fr 1fr}
    .app-panel{grid-template-columns:1fr .9fr;padding:34px}
    .security-grid{grid-template-columns:repeat(3,1fr)}
    .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
    .footer-bottom{grid-template-columns:1fr auto;align-items:center}
    .page-hero{padding:56px 0}
    .page-hero h1{font-size:42px}
}
@media (min-width:1180px){
    .hero h1{font-size:52px}
}
@media (max-width:420px){
    .container{width:min(100% - 24px,1120px)}
    .mobile-nav.open{grid-template-columns:1fr}
    .hero h1{font-size:30px}
    .section-title{font-size:25px}
    .top-action{min-width:66px;padding:0 12px}
}