:root{
  --brand: #111827;
  --brand-dark: #374151;
  --brand-soft: #f3f4f6;
  --text: #111827;
  --muted: #6b7280;
  --light: #f5f5f5;
  --line: #e5e7eb;
  --white: #ffffff;
  --shadow: 0 16px 40px rgba(0,0,0,.12);
  --radius: 22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","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}
.container{width:min(1180px,92%);margin:0 auto}
.site-header{background:linear-gradient(135deg,#1f2937 0%,#030712 100%);color:#fff;position:relative;z-index:20;box-shadow:0 8px 24px rgba(0,0,0,.22)}
.mobile-top{height:66px;display:grid;grid-template-columns:52px 1fr 88px;align-items:center;padding:0 14px;position:relative}
.nav-check{position:absolute;opacity:0;pointer-events:none}
.menu-button{width:42px;height:42px;border:1px solid rgba(255,255,255,.28);border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:rgba(255,255,255,.1);cursor:pointer}
.menu-button span{width:20px;height:2px;background:#fff;border-radius:4px}
.mobile-logo{justify-self:center;display:flex;align-items:center;justify-content:center}
.mobile-logo img{height:36px;width:auto;object-fit:contain}
.top-action{display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 16px;border-radius:999px;background:#fff;color:var(--brand);font-weight:800;font-size:14px;box-shadow:0 10px 22px rgba(0,0,0,.14)}
.mobile-panel{display:none;position:absolute;left:0;right:0;top:66px;padding:12px 14px 18px;background:linear-gradient(135deg,#1f2937 0%,#030712 100%);border-top:1px solid rgba(255,255,255,.18);box-shadow:0 20px 34px rgba(0,0,0,.22)}
.nav-check:checked~.mobile-panel{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-panel a{padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.12);font-weight:700;text-align:center;color:#fff}
.mobile-panel a.active{background:#fff;color:var(--brand)}
.desktop-header{display:none;height:82px;align-items:center;gap:22px}
.brand img{height:48px;width:auto;object-fit:contain}
.desktop-nav{display:flex;align-items:center;justify-content:center;gap:6px;flex:1;white-space:nowrap}
.desktop-nav a{color:#fff;font-size:15px;font-weight:700;padding:9px 13px;border-radius:999px;transition:.2s ease}
.desktop-nav a:hover{background:rgba(255,255,255,.16)}
.desktop-nav a.active{background:#fff;color:var(--brand)}
.desktop-action{box-shadow:none;min-width:86px}
.hero{background:linear-gradient(135deg,#1f2937 0%,#030712 100%);color:#fff;padding:42px 0 48px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-160px;bottom:-180px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.08)}
.hero-inner{position:relative;z-index:1;display:grid;gap:30px;align-items:center}
.hero h1,.page-hero h1{font-size:34px;line-height:1.18;margin:0 0 16px;letter-spacing:-.02em}
.hero p,.page-hero p{margin:0;color:rgba(255,255,255,.9);font-size:16px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}
.hero-tags span,.status-tag,.soft-tag{display:inline-flex;align-items:center;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:800}
.hero-tags span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#fff}
.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:999px;background:var(--brand);color:#fff;font-weight:900;box-shadow:0 14px 26px rgba(17,24,39,.24);border:0;transition:.2s ease}
.hero .main-btn,.cta-section .main-btn{background:#fff;color:var(--brand);box-shadow:0 12px 24px rgba(0,0,0,.18)}
.main-btn:hover{background:#000000;color:#fff;transform:translateY(-1px)}
.hero .main-btn:hover,.cta-section .main-btn:hover{background:#f3f4f6;color:var(--brand)}
.hero-visual{position:relative;border-radius:28px;overflow:hidden;background:rgba(255,255,255,.12);padding:12px;box-shadow:0 24px 50px rgba(0,0,0,.28)}
.hero-visual img{border-radius:22px;width:100%;height:auto;object-fit:cover}
.float-card{background:#fff;color:var(--text);border-radius:18px;padding:14px 16px;box-shadow:var(--shadow);margin-top:12px}
.float-card strong{color:var(--brand);display:block;margin-bottom:4px}
.section{padding:58px 0;background:#fff}
.section.alt{background:var(--light)}
.section-head{margin-bottom:26px;max-width:820px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.eyebrow{display:inline-flex;color:var(--brand);font-weight:900;background:var(--brand-soft);padding:5px 11px;border-radius:999px;margin-bottom:12px;font-size:13px}
h2{font-size:28px;line-height:1.25;margin:0 0 12px;color:var(--text)}
h3{line-height:1.35;margin:0 0 8px;color:var(--text)}
p{margin:0 0 12px;color:var(--muted)}
.category-grid{display:grid;grid-template-columns:1fr;gap:16px}
.card,.feature-card,.match-card,.data-card,.faq-item,.notice-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 26px rgba(0,0,0,.04)}
.category-grid .feature-card:nth-child(-n+4){background:linear-gradient(180deg,#fff 0%,#f9fafb 100%);border-color:#d1d5db}
.feature-card h3,.match-card h3,.data-card h3{font-size:20px}
.link-btn{display:inline-flex;margin-top:8px;color:var(--brand);font-weight:900}
.link-btn:after{content:"›";margin-left:6px}
.match-grid,.security-grid,.faq-grid,.data-grid,.service-grid,.zone-grid{display:grid;grid-template-columns:1fr;gap:16px}
.status-tag{background:var(--brand-soft);color:var(--brand)}
.visual-split{display:grid;gap:28px;align-items:center}
.visual-card{border-radius:28px;overflow:hidden;background:#fff;padding:12px;box-shadow:var(--shadow)}
.visual-card img{border-radius:22px;width:100%;object-fit:cover}
.points{display:grid;gap:12px;margin-top:18px}
.point{padding:16px;border-radius:18px;border:1px solid var(--line);background:#fff}
.point strong{display:block;color:var(--brand);margin-bottom:4px}
.score-panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow)}
.score-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.score-row:last-child{border-bottom:0}
.score-row b{color:var(--text)}
.score-row span{color:var(--brand);font-weight:900}
.platform-columns{display:grid;grid-template-columns:1fr;gap:18px}
.platform-column{background:#fff;border:1px solid var(--line);border-radius:26px;padding:24px}
.responsible{background:linear-gradient(135deg,#fff 0%,#f3f4f6 100%);border:1px solid #d1d5db;border-radius:28px;padding:28px;box-shadow:0 14px 34px rgba(0,0,0,.08)}
.responsible ul,.page-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.responsible li,.page-list li{padding-left:26px;position:relative;color:#444}
.responsible li:before,.page-list li:before{content:"";position:absolute;left:0;top:.72em;width:10px;height:10px;border-radius:50%;background:var(--brand)}
.cta-section{background:linear-gradient(135deg,#1f2937 0%,#030712 100%);color:#fff;padding:46px 0;text-align:center}
.cta-section h2{color:#fff}
.cta-section p{color:rgba(255,255,255,.88);max-width:760px;margin:0 auto 22px}
.page-hero{background:linear-gradient(135deg,#1f2937 0%,#030712 100%);color:#fff;padding:48px 0}
.breadcrumbs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px;color:rgba(255,255,255,.78);font-size:14px}
.breadcrumbs a{color:#fff;font-weight:800}
.page-wrap{padding:54px 0;background:#fff}
.page-intro{font-size:17px;color:#4b4b4b;max-width:900px}
.content-panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:26px;box-shadow:var(--shadow);margin-bottom:20px}
.content-panel h2{font-size:24px}
.inline-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.inline-links a{padding:9px 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-weight:900}
.steps{counter-reset:step;display:grid;gap:14px;margin-top:18px}
.step{counter-increment:step;background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px 18px 18px 58px;position:relative}
.step:before{content:counter(step);position:absolute;left:18px;top:18px;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:900}
.app-hero-grid{display:grid;gap:28px;align-items:center}
.app-showcase{border-radius:30px;background:#fff;padding:14px;box-shadow:var(--shadow)}
.app-showcase img{border-radius:24px;width:100%}
.download-card{text-align:center;background:#fff;border:1px solid var(--line);border-radius:30px;padding:30px;box-shadow:var(--shadow);margin:24px 0}
.site-footer{background:#202020;color:#fff;padding:44px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:26px}
.footer-brand img{height:42px;width:auto;margin-bottom:14px}
.site-footer p{color:#d7d7d7}
.site-footer h3{color:#fff;margin-bottom:12px;font-size:18px}
.site-footer a{display:block;color:#dcdcdc;margin:6px 0}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;display:grid;gap:8px;color:#cfcfcf;font-size:13px}
@media (min-width:640px){
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .match-grid,.security-grid,.faq-grid,.data-grid,.zone-grid{grid-template-columns:repeat(2,1fr)}
  .platform-columns{grid-template-columns:repeat(2,1fr)}
  .hero h1,.page-hero h1{font-size:42px}
}
@media (min-width:920px){
  .mobile-top{display:none}
  .desktop-header{display:flex}
  .hero{padding:72px 0 76px}
  .hero-inner{grid-template-columns:1.04fr .96fr;gap:52px}
  .hero h1{font-size:54px}
  .section{padding:78px 0}
  h2{font-size:36px}
  .category-grid{grid-template-columns:repeat(4,1fr)}
  .category-grid .feature-card:nth-child(-n+4){min-height:250px}
  .match-grid,.security-grid,.data-grid{grid-template-columns:repeat(3,1fr)}
  .faq-grid{grid-template-columns:repeat(2,1fr)}
  .visual-split{grid-template-columns:1fr 1fr}
  .visual-split.reverse .visual-card{order:-1}
  .points{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(3,1fr)}
  .zone-grid{grid-template-columns:repeat(3,1fr)}
  .app-hero-grid{grid-template-columns:1fr .82fr}
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
  .footer-bottom{grid-template-columns:1fr auto;align-items:center}
}
@media (max-width:360px){
  .mobile-top{grid-template-columns:48px 1fr 76px;padding:0 10px}
  .top-action{padding:0 12px;font-size:13px}
  .hero h1,.page-hero h1{font-size:30px}
}