:root{
  --primary: rgb(70,139,223);
  --primary-dark:#245fbe;
  --primary-soft:#eef6ff;
  --text:#162235;
  --muted:#657286;
  --line:#dce8f7;
  --card:#ffffff;
  --bg:#f7fbff;
  --radius:22px;
  --shadow:0 16px 40px rgba(31,90,160,.11);
}
*{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:linear-gradient(180deg,#f3f9ff 0%,#fff 34%,#f8fbff 100%);
  line-height:1.72;
  overflow-x: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:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.88);
  border-bottom:1px solid rgba(220,232,247,.8);
  backdrop-filter:blur(14px);
}
.nav-wrap{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#123052;letter-spacing:.02em}
.brand-logo{width:40px;height:40px;border-radius:12px;box-shadow:0 8px 20px rgba(70,139,223,.22)}
.brand-text{font-size:18px}
.site-nav{display:none;align-items:center;gap:8px;flex-wrap:wrap}
.site-nav.open{display:flex;position:absolute;left:16px;right:16px;top:70px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
.site-nav a{padding:9px 12px;border-radius:999px;color:#41516a;font-weight:650;font-size:14px}
.site-nav a:hover,.site-nav a.active{background:var(--primary-soft);color:var(--primary-dark)}
.nav-toggle{border:0;background:var(--primary-soft);color:var(--primary-dark);border-radius:12px;font-size:22px;width:44px;height:40px;cursor:pointer}
.section{padding:58px 0}
.section-title{font-size:28px;line-height:1.25;margin:0 0 12px;color:#10223c;letter-spacing:-.02em}
.section-lead{margin:0 0 24px;color:var(--muted);max-width:760px}
.hero{padding:42px 0 60px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 18% 8%,rgba(70,139,223,.22),transparent 28%),radial-gradient(circle at 86% 10%,rgba(105,176,255,.20),transparent 26%);pointer-events:none}
.hero-layout{position:relative;display:grid;gap:28px;align-items:center}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;background:#eaf4ff;color:var(--primary-dark);font-size:13px;font-weight:750;border:1px solid #d6eaff}
.hero h1{font-size:38px;line-height:1.15;margin:18px 0 16px;letter-spacing:-.03em;color:#0f2038}
.hero p{color:#54657c;margin:0 0 20px;font-size:16px}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:24px 0}
.download-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:12px 24px;border-radius:999px;
  background:var(--primary);color:#fff!important;font-weight:800;
  box-shadow:0 14px 26px rgba(70,139,223,.28);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.download-btn:hover{transform:translateY(-2px);background:var(--primary-dark);box-shadow:0 18px 32px rgba(70,139,223,.34)}
.text-link{font-weight:750;color:var(--primary-dark)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero-tags span,.mini-tag{border:1px solid var(--line);background:rgba(255,255,255,.8);border-radius:999px;padding:7px 11px;font-size:13px;color:#41516a}
.hero-visual{position:relative;min-height:480px;padding:14px}
.phone-shell{width:min(330px,86%);margin:0 auto;border-radius:34px;padding:13px;background:linear-gradient(160deg,#dcedff,#fff);box-shadow:0 24px 60px rgba(27,83,150,.18);border:1px solid rgba(255,255,255,.9)}
.app-img{border-radius:26px;width:100%;background:#fff;border:1px solid #e7f0fb}
.float-card{position:absolute;background:rgba(255,255,255,.92);border:1px solid rgba(220,232,247,.96);box-shadow:var(--shadow);border-radius:18px;padding:14px;backdrop-filter:blur(10px)}
.float-card strong{display:block;color:#10223c;margin-bottom:5px}
.float-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.55}
.status-card{left:0;top:34px;width:180px}.asset-card{right:0;top:160px;width:184px}.risk-card{left:14px;bottom:56px;width:190px}
.status-dot{width:9px;height:9px;border-radius:50%;background:#27b56b;display:inline-block;margin-right:8px;box-shadow:0 0 0 5px rgba(39,181,107,.13)}
.metrics-strip{display:grid;grid-template-columns:1fr;gap:12px;margin-top:24px}
.metric{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 12px 24px rgba(28,80,140,.06)}
.metric strong{display:block;font-size:15px;color:#123052}.metric span{color:var(--muted);font-size:13px}
.grid{display:grid;gap:16px}
.feature-grid,.category-grid,.scenario-grid,.article-grid{grid-template-columns:1fr}
.card,.category-card,.feature-card,.scenario-card,.faq-item,.info-panel,.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 12px 28px rgba(28,80,140,.06)
}
.card h3,.category-card h3,.feature-card h3,.scenario-card h3,.step-card h3{margin:0 0 9px;color:#10223c;font-size:19px;line-height:1.35}
.card p,.category-card p,.feature-card p,.scenario-card p,.step-card p{margin:0;color:var(--muted)}
.category-card,.step-card{display:flex;flex-direction:column;gap:12px;min-height:170px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.category-card:hover,.step-card:hover{transform:translateY(-3px);border-color:#b9d9ff;box-shadow:var(--shadow)}
.card-link{margin-top:auto;color:var(--primary-dark);font-weight:800}
.step-index{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:var(--primary);color:#fff;font-weight:900;box-shadow:0 10px 18px rgba(70,139,223,.22)}
.security-layout{display:grid;gap:24px;align-items:center}
.security-panel{background:linear-gradient(145deg,#ffffff,#f1f7ff);border:1px solid #dceaff;border-radius:26px;padding:24px;box-shadow:var(--shadow)}
.security-panel .panel-row{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.security-panel .panel-row:last-child{border-bottom:0}
.panel-row span{color:var(--muted);font-size:14px}.panel-row strong{color:#10223c}
.process-steps{display:grid;gap:14px;counter-reset:steps}
.process-step{position:relative;padding:20px 20px 20px 66px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 10px 24px rgba(28,80,140,.05)}
.process-step:before{counter-increment:steps;content:counter(steps);position:absolute;left:20px;top:20px;width:32px;height:32px;border-radius:10px;background:var(--primary-soft);color:var(--primary-dark);font-weight:900;display:flex;align-items:center;justify-content:center}
.process-step h3{margin:0 0 6px;font-size:17px}.process-step p{margin:0;color:var(--muted)}
.cta-section{padding:56px 0}.cta-box{text-align:center;background:linear-gradient(135deg,#eaf4ff,#ffffff);border:1px solid #d7eaff;border-radius:28px;padding:34px 22px;box-shadow:var(--shadow)}
.cta-box h2{margin:0 0 10px;font-size:28px}.cta-box p{margin:0 auto 22px;max-width:680px;color:var(--muted)}
.page-hero{padding:48px 0 22px}.page-hero .container{display:grid;gap:18px}.page-hero h1{font-size:34px;line-height:1.22;margin:12px 0 10px;color:#10223c;letter-spacing:-.02em}.page-hero p{margin:0;color:var(--muted);max-width:820px}
.article-page{padding:26px 0 62px}.article-layout{display:grid;gap:20px}.article-main{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:0 14px 34px rgba(28,80,140,.06)}
.article-main h2{margin:26px 0 10px;font-size:22px;color:#10223c}.article-main h2:first-child{margin-top:0}.article-main p{color:#536378;margin:0 0 14px}.article-main ul,.article-main ol{padding-left:20px;color:#536378}.article-main li{margin:8px 0}.article-side{display:grid;gap:14px;align-content:start}.notice{background:#f2f8ff;border:1px solid #d6eaff;border-radius:20px;padding:18px;color:#4b5d74}.notice strong{display:block;color:#10223c;margin-bottom:6px}
.kv-list{display:grid;gap:12px}.kv-list div{padding:15px;border:1px solid var(--line);border-radius:16px;background:#fbfdff}.kv-list strong{display:block;color:#10223c}.kv-list span{display:block;color:var(--muted);font-size:14px;margin-top:4px}
.faq-list{display:grid;gap:14px}.faq-item h2,.faq-item h3{margin:0 0 8px;font-size:18px;color:#10223c}.faq-item p{margin:0;color:var(--muted)}
.download-panel{max-width:820px;margin:0 auto;text-align:center;background:#fff;border:1px solid var(--line);border-radius:30px;padding:30px;box-shadow:var(--shadow)}
.only-download{margin:24px 0}.download-steps{display:grid;gap:12px;margin-top:28px;text-align:left}.download-steps div{background:#f8fbff;border:1px solid var(--line);border-radius:18px;padding:16px}.download-steps strong{display:block;color:#10223c}.download-steps span{display:block;color:var(--muted);margin-top:4px}
.table-like{display:grid;gap:10px}.table-like div{display:grid;gap:4px;padding:14px;border-radius:16px;background:#f8fbff;border:1px solid var(--line)}
.table-like strong{color:#10223c}.table-like span{color:var(--muted)}
.site-footer{background:#0f223a;color:#d6e4f6;padding:42px 0 22px;margin-top:24px}.footer-grid{display:grid;gap:24px}.footer-brand{font-weight:900;font-size:20px;color:#fff;margin-bottom:10px}.site-footer p{margin:0;color:#aebed3}.site-footer h3{margin:0 0 12px;color:#fff;font-size:16px}.site-footer a{display:block;color:#c9d8ec;margin:7px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#93a4ba;font-size:13px}
@media (min-width:640px){
  .metrics-strip{grid-template-columns:repeat(2,1fr)}
  .category-grid,.feature-grid,.scenario-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .download-steps{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:900px){
  .nav-toggle{display:none}.site-nav{display:flex}.site-nav.open{position:static;padding:0;border:0;box-shadow:none;background:transparent;flex-direction:row;align-items:center}
  .hero{padding:72px 0 76px}.hero-layout{grid-template-columns:1.04fr .96fr;gap:42px}.hero h1{font-size:54px}.hero p{font-size:17px}.hero-visual{min-height:560px}.phone-shell{width:360px}.status-card{left:6px;top:54px}.asset-card{right:6px;top:190px}.risk-card{left:28px;bottom:70px}
  .section{padding:72px 0}.section-title{font-size:34px}.metrics-strip{grid-template-columns:repeat(4,1fr)}
  .category-grid,.feature-grid,.scenario-grid{grid-template-columns:repeat(3,1fr)}
  .article-grid{grid-template-columns:repeat(3,1fr)}
  .security-layout{grid-template-columns:1fr 1fr;gap:40px}.process-steps{grid-template-columns:repeat(3,1fr)}
  .article-layout{grid-template-columns:minmax(0,1fr) 320px}.article-main{padding:34px}.page-hero h1{font-size:44px}.footer-grid{grid-template-columns:1.4fr .8fr .8fr}
}
@media (max-width:420px){
  .container{width:min(100% - 24px,1120px)}.hero h1{font-size:32px}.float-card{position:static;margin:10px auto;width:100%}.hero-visual{min-height:auto;padding:0}.phone-shell{width:92%}.download-btn{width:100%;padding-left:18px;padding-right:18px}.hero-actions{align-items:stretch}.cta-box h2{font-size:24px}
}