:root{
  --primary: rgb(70,139,223);
  --primary-dark:#235fbc;
  --primary-soft:#eaf3ff;
  --primary-soft-2:#f5f9ff;
  --ink:#0f1d33;
  --muted:#60718b;
  --line:#dfeaf7;
  --card:#ffffff;
  --bg:#f7fbff;
  --shadow:0 20px 60px rgba(29,86,156,.10);
  --shadow-soft:0 12px 32px rgba(29,86,156,.08);
  --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(--ink);
  background:
    radial-gradient(circle at 15% 5%, rgba(70,139,223,.14), transparent 28rem),
    linear-gradient(180deg,#fff 0%,#f8fbff 42%,#eef6ff 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:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(160%) blur(18px);
  border-bottom:1px solid rgba(216,230,248,.76);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:#10284a;letter-spacing:.02em}
.logo img{width:36px;height:36px;border-radius:12px;box-shadow:0 8px 24px rgba(70,139,223,.18)}
.nav-toggle{border:1px solid var(--line);background:#fff;color:#15305a;border-radius:999px;padding:8px 13px;font-weight:700}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:74px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft);border-radius:20px;padding:10px}
.site-nav.is-open{display:grid;gap:4px}
.site-nav a{padding:12px 14px;border-radius:14px;color:#28415f;font-weight:650;font-size:15px}
.site-nav a:hover,.site-nav a.active,.site-nav a[aria-current="page"]{background:var(--primary-soft);color:var(--primary-dark)}
section{padding:42px 0}
.section-head{margin-bottom:22px;max-width:760px}
.section-kicker,.badge{display:inline-flex;align-items:center;gap:7px;border:1px solid rgba(70,139,223,.22);background:rgba(234,243,255,.75);color:var(--primary-dark);font-size:13px;font-weight:800;border-radius:999px;padding:7px 12px}
.section-head h2{margin:12px 0 8px;font-size:clamp(26px,4vw,40px);line-height:1.22;letter-spacing:-.03em}
.section-head p{margin:0;color:var(--muted)}
.center{text-align:center;margin-left:auto;margin-right:auto}
.download-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 24px;
  border-radius:999px;
  background:var(--primary);
  color:#fff!important;
  font-weight:800;
  box-shadow:0 14px 30px rgba(70,139,223,.24);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
  border:0;
  cursor:pointer;
}
.download-btn:hover{transform:translateY(-2px);background:var(--primary-dark);box-shadow:0 18px 36px rgba(70,139,223,.30)}
.centered-hero{padding:68px 0 24px;text-align:center}
.hero-inner{max-width:900px;margin:0 auto}
.centered-hero h1{font-size:clamp(36px,7vw,72px);line-height:1.05;letter-spacing:-.06em;margin:18px 0 18px;color:#0c1f3d}
.hero-desc{max-width:760px;margin:0 auto 26px;color:#5f7088;font-size:clamp(16px,2vw,19px)}
.hero-tags,.tag-row{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:18px}
.tag,.mini-tag{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px;color:#28415f;font-size:13px;font-weight:700;box-shadow:0 8px 20px rgba(35,95,188,.06)}
.hero-tags .tag:before,.mini-tag:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--primary)}
.product-bento{padding-top:22px}
.product-shell{display:grid;gap:14px;align-items:center}
.product-card{background:linear-gradient(145deg,#fff,#edf6ff);border:1px solid var(--line);border-radius:30px;padding:18px;box-shadow:var(--shadow);position:relative;overflow:hidden;min-height:430px;display:grid;place-items:center}
.product-card:before{content:"";position:absolute;inset:20px;border-radius:28px;border:1px solid rgba(70,139,223,.12)}
.app-visual{position:relative;z-index:1;width:min(300px,76vw);margin:0 auto;filter:drop-shadow(0 24px 46px rgba(28,72,130,.18))}
.status-stack{display:grid;gap:14px}
.status-card,.capability-card,.category-card,.feature-card,.scenario-card,.faq-item,.doc-card,.principle-card,.step-card{
  background:rgba(255,255,255,.86);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
}
.status-card{padding:18px}
.status-card strong{display:block;margin-bottom:4px;color:#10284a}
.status-card p{margin:0;color:var(--muted);font-size:14px}
.status-dot{display:inline-flex;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 6px rgba(70,139,223,.12);margin-right:8px}
.capability-grid{display:grid;gap:14px}
.capability-card{padding:20px}
.capability-card h3{margin:0 0 8px;font-size:18px}
.capability-card p{margin:0;color:var(--muted);font-size:15px}
.roadmap{display:grid;gap:16px;position:relative}
.roadmap-item{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow-soft)}
.roadmap-number{width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}
.roadmap-item h3{margin:0 0 6px;font-size:18px}
.roadmap-item p{margin:0 0 8px;color:var(--muted);font-size:15px}
.link-more{font-weight:800;color:var(--primary-dark);font-size:14px}
.category-bento,.bento-grid,.scenario-grid{display:grid;gap:14px}
.category-card,.feature-card,.scenario-card{padding:20px;position:relative;overflow:hidden}
.category-card:after,.feature-card:after{content:"";position:absolute;width:110px;height:110px;border-radius:50%;right:-50px;bottom:-50px;background:rgba(70,139,223,.09)}
.category-card h3,.feature-card h3,.scenario-card h3{margin:0 0 8px;font-size:19px;letter-spacing:-.01em}
.category-card p,.feature-card p,.scenario-card p{margin:0 0 12px;color:var(--muted);font-size:15px}
.category-card.large,.feature-card.large{background:linear-gradient(145deg,#fff,#eef6ff)}
.feature-card.large{min-height:220px}
.security-layout{display:grid;gap:18px;align-items:start}
.security-panel{background:linear-gradient(145deg,#fff,#f0f7ff);border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
.security-panel h3{margin:0 0 10px;font-size:24px}
.security-panel p{color:var(--muted);margin:0 0 12px}
.principle-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.principle-list li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px 14px;color:#344762;font-weight:650}
.faq-list{display:grid;gap:12px}
.faq-item{padding:18px}
.faq-item h3{margin:0 0 8px;font-size:18px}
.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:44px 0 70px}
.cta-box{text-align:center;background:linear-gradient(135deg,#eef6ff,#fff);border:1px solid var(--line);border-radius:30px;padding:34px 20px;box-shadow:var(--shadow)}
.cta-box h2{margin:0 0 10px;font-size:clamp(26px,4vw,42px);letter-spacing:-.03em}
.cta-box p{max-width:680px;margin:0 auto 22px;color:var(--muted)}
.page-hero{padding:54px 0 22px}
.page-hero .container{max-width:900px}
.page-hero h1{font-size:clamp(32px,5vw,54px);line-height:1.12;letter-spacing:-.045em;margin:14px 0 12px}
.page-hero p{margin:0;color:var(--muted);font-size:17px}
.doc-layout{display:grid;gap:20px;align-items:start;padding-bottom:54px}
.doc-main{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow-soft)}
.doc-main p{color:#43546d;margin:0 0 16px}
.doc-main h2{font-size:24px;margin:24px 0 12px;letter-spacing:-.02em}
.doc-main ul,.doc-main ol{padding-left:20px;color:#43546d}
.doc-main li{margin:8px 0}
.doc-side{display:grid;gap:14px}
.doc-card{padding:18px;background:#fff}
.doc-card h2,.doc-card h3{margin:0 0 10px;font-size:18px}
.doc-card p{margin:0;color:var(--muted);font-size:15px}
.steps{display:grid;gap:12px;margin:16px 0}
.step-card{padding:16px;border-radius:18px}
.step-card strong{display:block;color:#10284a;margin-bottom:4px}
.notice{border-left:4px solid var(--primary);background:var(--primary-soft-2);padding:14px 16px;border-radius:14px;color:#41516a;margin:16px 0}
.download-panel{max-width:860px;margin:0 auto;text-align:center;background:#fff;border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow)}
.download-steps{display:grid;gap:12px;margin:24px 0;text-align:left}
.download-step{background:var(--primary-soft-2);border:1px solid var(--line);border-radius:18px;padding:16px}
.about-grid{display:grid;gap:14px}
.about-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-soft)}
.about-card h2{margin:0 0 10px}
.about-card p{margin:0;color:var(--muted)}
.site-footer{background:#0f2440;color:#dce8f7;margin-top:20px;padding:38px 0 22px}
.footer-grid{display:grid;gap:24px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.footer-logo img{width:34px;height:34px;border-radius:12px}
.site-footer h2{font-size:16px;margin:0 0 12px;color:#fff}
.site-footer p{margin:0;color:#b8c9de;max-width:520px}
.site-footer a{display:block;color:#c8d8ec;margin:7px 0;font-size:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:18px;color:#aabdd3;font-size:13px}
@media (min-width:700px){
  .capability-grid{grid-template-columns:repeat(2,1fr)}
  .category-bento,.scenario-grid{grid-template-columns:repeat(2,1fr)}
  .bento-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
  .download-steps{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:960px){
  .nav-toggle{display:none}
  .site-nav{display:flex;position:static;align-items:center;gap:4px;background:transparent;border:0;box-shadow:none;border-radius:0;padding:0}
  .site-nav a{font-size:14px;padding:9px 12px}
  .centered-hero{padding:92px 0 28px}
  .product-shell{grid-template-columns:minmax(0,1.5fr) minmax(280px,.75fr);gap:18px}
  .product-card{min-height:520px;padding:28px}
  .capability-grid{grid-template-columns:repeat(4,1fr)}
  .roadmap{grid-template-columns:repeat(3,1fr)}
  .roadmap-item:nth-child(even){transform:translateY(18px)}
  .category-bento{grid-template-columns:repeat(4,1fr);grid-auto-flow:dense}
  .category-card.large{grid-column:span 2;min-height:210px}
  .category-card.tall{grid-row:span 2}
  .bento-grid{grid-template-columns:repeat(4,1fr);grid-auto-flow:dense}
  .feature-card.large{grid-column:span 2;grid-row:span 2}
  .feature-card.medium{grid-column:span 2}
  .security-layout{grid-template-columns:1.05fr .95fr;gap:24px}
  .scenario-grid{grid-template-columns:repeat(5,1fr)}
  .scenario-card:nth-child(1),.scenario-card:nth-child(2){grid-column:span 2}
  .scenario-card:nth-child(3){grid-column:span 1}
  .doc-layout{grid-template-columns:minmax(0,760px) minmax(260px,1fr)}
  .doc-main{padding:30px}
}