:root{
  --primary: rgb(70,139,223);
  --primary-dark: #245fba;
  --primary-soft: #eaf3ff;
  --text: #142033;
  --muted: #68778f;
  --line: #dbe7f5;
  --card: rgba(255,255,255,.88);
  --bg: #f7fbff;
  --radius: 22px;
  --shadow: 0 18px 50px rgba(43,104,180,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#ffffff 0%,#f3f8ff 45%,#ffffff 100%);line-height:1.72;-webkit-font-smoothing:antialiased;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}
.narrow{width:min(860px,calc(100% - 32px));margin:0 auto}
.section{padding:58px 0}
.section-title{font-size:clamp(28px,4vw,46px);line-height:1.16;margin:0 0 16px;letter-spacing:-.04em}
.section-lead{color:var(--muted);font-size:17px;max-width:740px;margin:0 auto 30px}.left .section-lead{margin-left:0}.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;color:var(--primary-dark);background:var(--primary-soft);border:1px solid #d6e7ff;border-radius:999px;padding:6px 12px;font-size:13px;font-weight:700}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,231,245,.8)}
.nav-wrap{width:min(1180px,calc(100% - 28px));margin:0 auto;min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;font-weight:800}.brand-logo{width:36px;height:36px;border-radius:12px}.brand-name{font-size:18px;letter-spacing:-.02em}.main-nav{display:none;position:absolute;left:14px;right:14px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.main-nav.is-open{display:grid;gap:4px}.main-nav a{padding:11px 12px;border-radius:12px;color:#486079;font-size:14px;font-weight:650}.main-nav a:hover,.main-nav a.active{background:var(--primary-soft);color:var(--primary-dark)}.nav-toggle{display:inline-grid;gap:4px;border:0;background:var(--primary-soft);border-radius:12px;padding:10px;cursor:pointer}.nav-toggle span{display:block;width:20px;height:2px;background:var(--primary);border-radius:99px}.centered-hero{padding:82px 0 46px;text-align:center;background:radial-gradient(circle at 50% 0%,rgba(70,139,223,.18),rgba(255,255,255,0) 48%)}.hero-kicker{margin-bottom:18px}.hero-title{max-width:920px;margin:0 auto 18px;font-size:clamp(38px,8vw,78px);line-height:1.04;letter-spacing:-.07em}.hero-desc{max-width:760px;margin:0 auto 28px;color:var(--muted);font-size:clamp(16px,2vw,19px)}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 14px 28px rgba(70,139,223,.28);border:1px solid rgba(70,139,223,.2);transition:transform .2s ease,box-shadow .2s ease}.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(70,139,223,.35)}.security-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}.security-tags span{border:1px solid var(--line);background:rgba(255,255,255,.78);border-radius:999px;padding:8px 13px;color:#4b6380;font-weight:650;font-size:13px}.product-bento{display:grid;gap:16px;align-items:stretch}.product-card{position:relative;overflow:hidden;border:1px solid var(--line);background:linear-gradient(135deg,#fff,#eef6ff);border-radius:30px;padding:28px;box-shadow:var(--shadow);min-height:420px;display:grid;place-items:center}.product-card:before{content:"";position:absolute;inset:auto -20% -38% -20%;height:260px;background:radial-gradient(circle,rgba(70,139,223,.2),rgba(70,139,223,0) 66%)}.app-shot{width:min(270px,80%);border-radius:34px;filter:drop-shadow(0 30px 46px rgba(25,58,108,.18));position:relative;z-index:1}.status-grid{display:grid;gap:16px}.status-card,.card,.category-card,.feature-card,.scenario-card,.faq-item,.principle-card,.doc-card,.step-card{border:1px solid var(--line);background:var(--card);border-radius:var(--radius);padding:22px;box-shadow:0 12px 36px rgba(43,104,180,.07)}.status-card small,.card small{color:var(--primary-dark);font-weight:800}.status-card h3,.card h3,.category-card h3,.feature-card h3,.scenario-card h3,.principle-card h3,.doc-card h3,.step-card h3{margin:7px 0 8px;font-size:20px;line-height:1.3}.status-card p,.card p,.category-card p,.feature-card p,.scenario-card p,.principle-card p,.doc-card p,.step-card p,.faq-item p{margin:0;color:var(--muted)}.ability-grid{display:grid;gap:16px}.category-bento,.bento-grid,.scenario-grid,.faq-grid,.doc-grid{display:grid;gap:16px}.category-card,.scenario-card{display:flex;flex-direction:column;gap:12px;min-height:160px}.card-link{color:var(--primary-dark);font-weight:800;margin-top:auto}.roadmap{counter-reset:step;display:grid;gap:16px;position:relative}.roadmap-item{position:relative;border:1px solid var(--line);background:#fff;border-radius:24px;padding:22px;box-shadow:0 12px 30px rgba(43,104,180,.06)}.roadmap-num{width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:12px}.roadmap-item h3{margin:0 0 8px}.roadmap-item p{margin:0 0 12px;color:var(--muted)}.bento-grid .feature-card:nth-child(1),.bento-grid .feature-card:nth-child(2){background:linear-gradient(135deg,#fff,#edf6ff)}.security-layout{display:grid;gap:18px;align-items:center}.principle-list{display:grid;gap:12px}.principle-card{display:flex;gap:13px;align-items:flex-start}.principle-card span{flex:0 0 32px;width:32px;height:32px;border-radius:12px;background:var(--primary-soft);color:var(--primary-dark);display:grid;place-items:center;font-weight:900}.cta-section{padding:50px 24px;text-align:center;border:1px solid var(--line);background:linear-gradient(135deg,#f4f9ff,#fff);border-radius:32px;box-shadow:var(--shadow)}.cta-section h2{font-size:clamp(26px,4vw,42px);margin:0 0 14px;letter-spacing:-.04em}.cta-section p{max-width:650px;margin:0 auto 22px;color:var(--muted)}.page-hero{padding:58px 0 26px;background:radial-gradient(circle at 40% 0,rgba(70,139,223,.16),transparent 42%)}.page-hero h1{font-size:clamp(32px,6vw,58px);line-height:1.08;letter-spacing:-.06em;margin:16px 0 16px}.page-summary{font-size:18px;color:var(--muted);max-width:780px}.article-layout{display:grid;gap:22px;align-items:start}.article-body{background:rgba(255,255,255,.76);border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:0 14px 40px rgba(43,104,180,.07)}.article-body h2{font-size:26px;line-height:1.24;margin:30px 0 10px;letter-spacing:-.03em}.article-body h2:first-child{margin-top:0}.article-body p{color:#52657d}.article-body ul,.article-body ol{padding-left:20px;color:#52657d}.article-side{display:grid;gap:16px}.tip-list{display:grid;gap:12px;margin-top:14px}.tip-list li{list-style:none;border:1px solid var(--line);background:#fff;border-radius:16px;padding:12px;color:#50637a}.process-steps{display:grid;gap:14px}.process-steps .step-card{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}.step-index{width:36px;height:36px;background:var(--primary);color:#fff;border-radius:12px;display:grid;place-items:center;font-weight:900}.faq-list{display:grid;gap:14px}.faq-item h3{margin:0 0 8px;font-size:18px}.download-panel{max-width:760px;margin:0 auto;text-align:center}.download-steps{margin:28px 0;display:grid;gap:12px;text-align:left}.download-steps li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px;color:#52657d}.site-footer{margin-top:64px;background:#f1f7ff;border-top:1px solid var(--line);padding:42px 0 0}.footer-grid{display:grid;gap:24px}.footer-grid h3{font-size:15px;margin:0 0 12px}.footer-grid a{display:block;color:#52657d;margin:8px 0;font-size:14px}.footer-grid p{color:#63758c;margin:10px 0 0}.footer-brand{display:flex;align-items:center;gap:10px}.footer-brand img{width:34px;height:34px;border-radius:12px}.footer-bottom{text-align:center;color:#7b8ca1;border-top:1px solid var(--line);padding:18px;margin-top:30px;font-size:13px}.soft-bg{background:linear-gradient(135deg,#f8fbff,#eef6ff);border-radius:34px;padding:34px 20px}.two-column{display:grid;gap:16px}.notice{border-left:4px solid var(--primary);background:#f5faff;border-radius:16px;padding:16px;color:#4f647d}.link-grid{display:grid;gap:12px}.link-grid a{border:1px solid var(--line);background:#fff;border-radius:16px;padding:13px 14px;color:var(--primary-dark);font-weight:750}
@media (min-width:640px){.ability-grid{grid-template-columns:repeat(2,1fr)}.category-bento,.scenario-grid,.faq-grid,.doc-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.2fr repeat(3,1fr)}.two-column{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.section{padding:76px 0}.nav-toggle{display:none}.main-nav{display:flex;position:static;box-shadow:none;border:0;background:transparent;padding:0;gap:4px;align-items:center}.main-nav a{padding:9px 10px}.centered-hero{padding:104px 0 62px}.product-bento{grid-template-columns:1.6fr .9fr}.status-grid{grid-template-rows:repeat(4,1fr)}.ability-grid{grid-template-columns:repeat(4,1fr)}.roadmap{grid-template-columns:repeat(6,1fr);gap:12px}.roadmap-item:nth-child(even){transform:translateY(26px)}.category-bento{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(154px,auto)}.category-card:nth-child(1),.category-card:nth-child(3){grid-column:span 2}.bento-grid{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(170px,auto)}.bento-grid .feature-card:nth-child(1),.bento-grid .feature-card:nth-child(2){grid-column:span 2;grid-row:span 2}.bento-grid .feature-card:nth-child(3),.bento-grid .feature-card:nth-child(4){grid-column:span 2}.security-layout{grid-template-columns:1fr .9fr}.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}.faq-grid{grid-template-columns:repeat(4,1fr)}.article-layout{grid-template-columns:minmax(0,1fr) 310px}.article-body{padding:34px}.product-card{min-height:520px}.app-shot{width:310px}}
@media (min-width:1100px){.main-nav a{padding:10px 13px}.hero-title{max-width:980px}.category-card:nth-child(5){grid-column:span 2}.bento-grid .feature-card:nth-child(5),.bento-grid .feature-card:nth-child(6){grid-column:span 1}}