:root{
    --brand: rgb(213, 5, 5);
    --brand-dark: rgb(176, 0, 0);
    --text: #1f1f1f;
    --muted: #666;
    --light: #f6f6f6;
    --line: #ececec;
    --white: #fff;
    --dark: #111;
    --shadow: 0 12px 32px rgba(0,0,0,.07);
    --radius: 18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:#fff;color:var(--text);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(100% - 32px,1180px);margin:0 auto}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.mobile-topbar{height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;background:#fff}
.menu-toggle{width:42px;height:42px;border:0;background:#fff;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0;cursor:pointer}
.menu-toggle span{width:23px;height:2px;background:#222;border-radius:4px;display:block;margin-left:5px;transition:.2s}
.mobile-logo{position:absolute;left:50%;transform:translateX(-50%)}
.logo img,.mobile-logo img,.desktop-logo img,.footer-logo img{height:36px;width:auto;object-fit:contain}
.top-action,.main-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--brand);color:#fff;border-radius:999px;font-weight:700;letter-spacing:.02em;box-shadow:0 8px 18px rgba(213,5,5,.2);transition:.2s;border:0;white-space:nowrap}
.top-action{min-width:72px;height:36px;padding:0 18px;font-size:14px}
.main-btn{min-height:46px;padding:0 26px;font-size:16px}
.top-action:hover,.main-btn:hover{background:var(--brand-dark);transform:translateY(-1px)}
.desktop-header{display:none}
.mobile-nav{display:none;background:#fff;border-top:1px solid var(--line);padding:6px 16px 16px;grid-template-columns:1fr 1fr;gap:8px}
.site-header.open .mobile-nav{display:grid}
.mobile-nav .nav-link{padding:12px 14px;border-radius:12px;background:#f7f7f7;font-size:15px;color:#333}
.nav-link.active{color:var(--brand);font-weight:800}
.search-icon{width:24px;height:24px;display:inline-block;position:relative;border:2px solid #1f1f1f;border-radius:50%;opacity:.75}
.search-icon:after{content:"";position:absolute;width:9px;height:2px;background:#1f1f1f;right:-7px;bottom:1px;transform:rotate(45deg);border-radius:3px}
.hero{background:linear-gradient(135deg,#fff 0%,#fff5f5 55%,#f4f4f4 100%);padding:34px 0 42px;overflow:hidden}
.hero-grid{display:grid;gap:28px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14px;font-weight:800;background:#fff;border:1px solid #ffd5d5;border-radius:999px;padding:6px 12px;margin-bottom:14px}
h1,h2,h3,p{margin-top:0}
h1{font-size:32px;line-height:1.22;margin-bottom:18px;color:#141414;letter-spacing:-.02em}
h2{font-size:26px;line-height:1.3;margin-bottom:12px;color:#151515}
h3{font-size:19px;line-height:1.35;margin-bottom:10px;color:#171717}
p{color:#555;margin-bottom:14px}
.hero p{font-size:16px;color:#444}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}
.tag{display:inline-flex;background:#fff;border:1px solid #f0cccc;color:#555;border-radius:999px;padding:7px 12px;font-size:14px}
.hero-media{position:relative}
.hero-media .image-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:10px;overflow:hidden}
.hero-media img{border-radius:18px;width:100%;height:auto}
.floating-panel{background:#fff;border:1px solid #eee;border-radius:18px;padding:14px;box-shadow:0 12px 28px rgba(0,0,0,.08);margin-top:14px}
.floating-panel strong{display:block;color:#111;font-size:18px}
.floating-panel span{color:#777;font-size:14px}
.section{padding:52px 0}
.section.alt{background:var(--light)}
.section-head{margin-bottom:24px;max-width:780px}
.section-head p{font-size:16px;color:#555}
.category-grid,.service-grid,.content-grid,.safety-grid,.quick-grid,.data-grid{display:grid;gap:18px}
.category-grid{grid-template-columns:1fr}
.service-grid,.content-grid,.safety-grid,.quick-grid,.data-grid{grid-template-columns:1fr}
.entry-card,.service-card,.content-card,.faq-item,.score-card,.data-card,.notice-box,.tip-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 8px 22px rgba(0,0,0,.035)}
.entry-card:hover,.service-card:hover,.content-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);transition:.2s}
.card-label{display:inline-flex;background:#fff2f2;color:var(--brand);font-weight:800;border-radius:999px;padding:4px 10px;font-size:13px;margin-bottom:10px}
.text-link{display:inline-flex;align-items:center;color:var(--brand);font-weight:800;margin-top:6px}
.text-link:after{content:"›";font-size:22px;line-height:1;margin-left:5px}
.feature-split{display:grid;gap:24px;align-items:center}
.feature-image{border-radius:24px;overflow:hidden;background:#fff;border:1px solid var(--line);padding:10px;box-shadow:var(--shadow)}
.feature-image img{border-radius:18px;width:100%}
.check-list,.notice-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
.check-list li,.notice-list li{position:relative;padding-left:26px;color:#555}
.check-list li:before,.notice-list li:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--brand);position:absolute;left:2px;top:.72em}
.score-panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow)}
.score-row{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #eee;padding:14px 0;gap:14px}
.score-row:last-child{border-bottom:0}
.score-row strong{color:#111}
.status{background:#fff2f2;color:var(--brand);font-size:13px;font-weight:800;border-radius:999px;padding:4px 10px;white-space:nowrap}
.data-card strong{font-size:24px;color:var(--brand);display:block;margin-bottom:6px}
.app-showcase{background:linear-gradient(135deg,#fff,#fff3f3);border-top:1px solid #ffe0e0;border-bottom:1px solid #ffe0e0}
.info-columns{display:grid;gap:22px}
.info-column{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 8px 22px rgba(0,0,0,.035)}
.info-item{padding:14px 0;border-bottom:1px solid #eee}
.info-item:last-child{border-bottom:0}
.info-item h3{font-size:18px;margin-bottom:6px}
.security-section .content-card h3:before{content:"";display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--brand);margin-right:8px}
.responsible-box{background:#fff;border-left:5px solid var(--brand);border-radius:20px;padding:24px;box-shadow:var(--shadow)}
.faq-list{display:grid;gap:14px}
.faq-item h3{font-size:18px;margin-bottom:8px}
.bottom-cta{background:linear-gradient(135deg,var(--brand),#a90000);color:#fff;border-radius:28px;padding:32px;text-align:center;box-shadow:0 16px 32px rgba(213,5,5,.22)}
.bottom-cta h2,.bottom-cta p{color:#fff}
.bottom-cta .main-btn{background:#fff;color:var(--brand);box-shadow:none}
.bottom-cta .main-btn:hover{background:#f7f7f7;color:var(--brand-dark)}
.page-hero{background:linear-gradient(135deg,#fff,#fff4f4);padding:42px 0;border-bottom:1px solid #ffe0e0}
.page-hero .container{max-width:920px}
.page-hero p{font-size:17px;color:#4d4d4d}
.page-wrap{padding:46px 0}
.content-block{margin-bottom:34px}
.content-block p{font-size:16px}
.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.related-links a{background:#fff;border:1px solid #f2c8c8;border-radius:999px;padding:9px 14px;color:var(--brand);font-weight:800}
.steps{counter-reset:step;display:grid;gap:14px;margin:20px 0}
.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;position:relative;padding-left:62px}
.step:before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.site-footer{background:#161616;color:#ddd;padding:42px 0 20px}
.footer-grid{display:grid;gap:26px}
.site-footer p{color:#bdbdbd}
.site-footer h3{color:#fff;font-size:17px;margin-bottom:12px}
.site-footer a{display:block;color:#cfcfcf;margin:8px 0;font-size:14px}
.site-footer a:hover{color:#fff}
.footer-logo img{height:38px;margin-bottom:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;display:flex;flex-direction:column;gap:8px;color:#aaa;font-size:13px}
@media (min-width:640px){
    .category-grid{grid-template-columns:repeat(2,1fr)}
    .service-grid,.content-grid,.safety-grid,.quick-grid,.data-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:920px){
    .mobile-topbar,.mobile-nav{display:none!important}
    .desktop-header{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .desktop-logo img{height:42px}
    .desktop-nav{display:flex;align-items:center;gap:21px;flex:1;justify-content:center}
    .desktop-nav .nav-link{font-size:15px;color:#2d2d2d;font-weight:700;white-space:nowrap}
    .desktop-nav .nav-link:hover{color:var(--brand)}
    .header-tools{display:flex;align-items:center;gap:22px}
    .hero{padding:64px 0 70px}
    .hero-grid{grid-template-columns:1.05fr .95fr;gap:48px}
    h1{font-size:48px}
    h2{font-size:32px}
    .section{padding:72px 0}
    .category-grid{grid-template-columns:repeat(3,1fr)}
    .service-grid,.safety-grid{grid-template-columns:repeat(3,1fr)}
    .content-grid,.quick-grid,.data-grid{grid-template-columns:repeat(3,1fr)}
    .feature-split{grid-template-columns:1fr 1fr;gap:42px}
    .feature-split.reverse .feature-image{order:-1}
    .info-columns{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
    .footer-bottom{flex-direction:row;justify-content:space-between}
}
@media (max-width:360px){
    h1{font-size:28px}
    .top-action{min-width:64px;padding:0 14px}
    .container{width:min(100% - 24px,1180px)}
}