:root{
  --brand:rgb(213,5,5);
  --brand-dark:rgb(180,4,4);
  --brand-hover:rgb(155,3,3);
  --text:#1f1f1f;
  --muted:#626262;
  --light:#f6f7f9;
  --line:#e8e8e8;
  --white:#ffffff;
  --shadow:0 14px 36px rgba(0,0,0,.08);
  --soft-shadow:0 8px 22px rgba(0,0,0,.06);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 14px}
h1,h2,h3{margin:0;color:#161616;line-height:1.3}
.container{
  width:min(1120px,calc(100% - 32px));
  margin:0 auto;
}
.site-header{position:relative;z-index:20;background:#fff}
.desktop-topbar{display:none;background:var(--brand-dark);color:#fff;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:38px}
.header-main{
  background:#fff;
  border-bottom:3px solid var(--brand-dark);
  box-shadow:0 4px 18px rgba(0,0,0,.05);
}
.header-inner{
  height:64px;
  display:grid;
  grid-template-columns:42px 1fr auto;
  align-items:center;
  gap:10px;
  position:relative;
}
.logo{justify-self:center;display:flex;align-items:center}
.logo img{height:38px;width:auto;object-fit:contain}
.menu-toggle{
  border:0;background:transparent;width:42px;height:42px;border-radius:10px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.menu-toggle span{width:22px;height:2px;background:#222;border-radius:4px;display:block}
.main-nav{
  display:none;
  position:absolute;
  left:0;right:0;top:64px;
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:3px solid var(--brand-dark);
  box-shadow:var(--shadow);
  padding:10px;
}
.main-nav.open{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.main-nav a{
  padding:10px 12px;border-radius:12px;color:#333;font-weight:600;font-size:14px;
}
.main-nav a.active,.main-nav a:hover{background:rgba(213,5,5,.08);color:var(--brand)}
.search-icon{display:none}
.top-action{
  justify-self:end;
  background:var(--brand);
  color:#fff;
  border-radius:999px;
  padding:8px 16px;
  font-weight:700;
  font-size:14px;
  box-shadow:0 8px 20px rgba(213,5,5,.22);
}
.top-action:hover,.main-btn:hover{background:var(--brand-hover);color:#fff}
.section{padding:54px 0}
.section.gray{background:var(--light)}
.section-title{margin-bottom:24px}
.section-kicker{
  display:inline-flex;align-items:center;
  color:var(--brand);font-weight:800;font-size:14px;margin-bottom:8px;
}
.section-kicker:before{content:"";width:24px;height:3px;background:var(--brand);border-radius:4px;margin-right:9px}
.section-title h2{font-size:26px;margin-bottom:10px}
.section-title p{color:var(--muted);max-width:760px}
.main-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--brand);
  color:#fff;
  min-height:46px;
  padding:11px 24px;
  border-radius:999px;
  font-weight:800;
  box-shadow:0 12px 26px rgba(213,5,5,.24);
}
.text-link{
  display:inline-flex;align-items:center;color:var(--brand);font-weight:800;margin-top:8px;
}
.text-link:after{content:"›";font-size:18px;margin-left:6px}
.hero{
  background:
    radial-gradient(circle at 90% 10%,rgba(213,5,5,.12),transparent 34%),
    linear-gradient(180deg,#fff 0%,#fff 55%,#f7f7f7 100%);
  padding:42px 0 28px;
}
.hero-grid{display:grid;gap:28px;align-items:center}
.hero h1{font-size:33px;letter-spacing:-.5px;margin-bottom:14px}
.hero p{color:#4c4c4c;font-size:16px}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:22px}
.hero-note{color:#666;font-size:14px}
.hero-media{
  background:#fff;border:1px solid var(--line);border-radius:26px;overflow:hidden;box-shadow:var(--shadow);
  position:relative;padding:12px;
}
.hero-media img{border-radius:18px;width:100%;object-fit:cover}
.service-tags{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;
}
.service-tags span{
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px;color:#444;font-weight:700;font-size:13px;
}
.category-main-grid,.focus-grid,.security-grid,.info-card-grid,.small-card-grid{display:grid;gap:16px}
.category-main-card,.category-sub-card,.focus-card,.info-card,.security-card,.faq-item,.data-card,.simple-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft-shadow);
}
.category-main-card{padding:22px}
.category-sub-card{padding:18px}
.category-main-card h3,.category-sub-card h3,.focus-card h3,.info-card h3,.security-card h3,.data-card h3,.simple-card h3{font-size:20px;margin-bottom:9px}
.category-main-card p,.category-sub-card p,.focus-card p,.info-card p,.security-card p,.data-card p,.simple-card p{color:var(--muted)}
.card-label{
  display:inline-flex;background:rgba(213,5,5,.08);color:var(--brand);border-radius:999px;padding:4px 10px;
  font-size:12px;font-weight:800;margin-bottom:10px;
}
.focus-card{padding:20px;position:relative;overflow:hidden}
.focus-card:before{content:"";position:absolute;left:0;top:0;width:5px;height:100%;background:var(--brand)}
.info-split,.showcase,.score-data,.app-showcase{
  display:grid;gap:22px;align-items:center;
}
.info-panel{
  background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--soft-shadow);
}
.info-panel img{border-radius:18px;margin-top:16px}
.info-list{display:grid;gap:12px}
.info-card{padding:16px}
.showcase-image img,.app-image img,.score-image img{border-radius:24px;box-shadow:var(--shadow)}
.point-list{display:grid;gap:10px;margin:18px 0 0;padding:0;list-style:none}
.point-list li{
  position:relative;padding-left:24px;color:#444;
}
.point-list li:before{
  content:"";position:absolute;left:0;top:12px;width:9px;height:9px;border-radius:50%;background:var(--brand);
}
.score-data{background:#fff;border:1px solid var(--line);border-radius:26px;padding:22px;box-shadow:var(--soft-shadow)}
.data-card-grid{display:grid;gap:14px;margin-top:16px}
.data-card{padding:16px}
.data-card strong{display:block;font-size:24px;color:var(--brand);line-height:1.1;margin-bottom:6px}
.app-showcase{
  background:linear-gradient(135deg,#fff,#f8f8f8);
  border:1px solid var(--line);
  border-radius:28px;
  padding:24px;
  box-shadow:var(--soft-shadow);
}
.security-card{padding:18px}
.responsible-box{
  background:#fff;border-left:5px solid var(--brand);border-radius:18px;padding:22px;box-shadow:var(--soft-shadow);
}
.responsible-box p{color:#4c4c4c}
.faq-list{display:grid;gap:14px}
.faq-item{padding:18px}
.faq-item h3{font-size:18px;margin-bottom:8px}
.faq-item p{color:var(--muted)}
.cta{
  background:linear-gradient(135deg,rgba(213,5,5,.1),rgba(213,5,5,.03));
  border-top:1px solid rgba(213,5,5,.13);
  border-bottom:1px solid rgba(213,5,5,.13);
}
.cta-box{text-align:center;max-width:760px;margin:0 auto}
.cta-box h2{font-size:27px;margin-bottom:12px}
.cta-box p{color:#555;margin-bottom:22px}
.page-hero{
  background:linear-gradient(135deg,rgba(180,4,4,.96),rgba(213,5,5,.88));
  color:#fff;
  padding:44px 0;
}
.page-hero h1{color:#fff;font-size:31px;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.92);max-width:820px}
.content-grid{display:grid;gap:18px}
.content-block{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--soft-shadow);
}
.content-block h2{font-size:23px;margin-bottom:10px}
.content-block p,.content-block li{color:#555}
.content-block ul{padding-left:20px;margin:10px 0 0}
.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.related-links a{
  padding:9px 13px;border-radius:999px;border:1px solid rgba(213,5,5,.18);color:var(--brand);font-weight:800;background:#fff;
}
.steps{counter-reset:step;display:grid;gap:14px;margin-top:18px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--soft-shadow);
}
.step:before{
  counter-increment:step;content:counter(step);
  display:inline-flex;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;
  align-items:center;justify-content:center;font-weight:800;margin-bottom:8px;
}
.notice{
  background:#f8f8f8;border-left:5px solid var(--brand);border-radius:18px;padding:18px;margin-top:18px;
}
.table-like{display:grid;gap:10px;margin-top:12px}
.table-row{display:grid;gap:4px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}
.table-row strong{color:#222}
.table-row span{color:#666}
.site-footer{background:#222;color:#eee;padding:40px 0 20px}
.footer-grid{display:grid;gap:22px}
.footer-logo img{height:38px;margin-bottom:12px}
.site-footer p{color:#cfcfcf}
.site-footer h3{color:#fff;font-size:18px;margin-bottom:10px}
.site-footer a{display:block;color:#dcdcdc;margin:7px 0}
.site-footer a:hover{color:#fff}
.footer-note{border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:18px;font-size:13px}
@media (min-width:720px){
  .category-main-grid{grid-template-columns:repeat(2,1fr)}
  .small-card-grid{grid-template-columns:repeat(2,1fr)}
  .focus-grid,.security-grid,.info-card-grid{grid-template-columns:repeat(2,1fr)}
  .data-card-grid{grid-template-columns:repeat(3,1fr)}
  .content-grid{grid-template-columns:repeat(2,1fr)}
  .table-row{grid-template-columns:180px 1fr}
}
@media (min-width:980px){
  .desktop-topbar{display:block}
  .header-main{border-bottom:1px solid var(--line)}
  .header-inner{height:76px;display:flex;gap:22px}
  .menu-toggle{display:none}
  .logo{justify-self:auto}
  .logo img{height:44px}
  .main-nav{
    position:static;display:flex !important;align-items:center;gap:4px;padding:0;border:0;box-shadow:none;background:transparent;flex:1;
  }
  .main-nav a{font-size:15px;padding:10px 12px}
  .main-nav a.active{background:rgba(213,5,5,.08)}
  .search-icon{
    display:inline-block;width:22px;height:22px;border:2px solid #333;border-radius:50%;position:relative;flex:0 0 auto;
  }
  .search-icon:after{
    content:"";position:absolute;width:9px;height:2px;background:#333;right:-7px;bottom:-4px;transform:rotate(45deg);border-radius:3px;
  }
  .top-action{padding:10px 22px}
  .hero{padding:62px 0 40px}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:42px}
  .hero h1{font-size:48px}
  .section{padding:72px 0}
  .section-title h2{font-size:34px}
  .category-main-grid{grid-template-columns:repeat(4,1fr)}
  .category-main-card{min-height:282px}
  .small-card-grid{grid-template-columns:repeat(4,1fr)}
  .info-split,.showcase,.score-data,.app-showcase{grid-template-columns:1fr 1fr}
  .score-data{padding:30px}
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
  .page-hero{padding:66px 0}
  .page-hero h1{font-size:42px}
}