:root{
  --primary: rgb(70,139,223);
  --primary-dark: #236bb9;
  --primary-soft: rgba(70,139,223,.12);
  --ink: #102033;
  --muted: #617086;
  --line: #dce8f7;
  --bg: #f7fbff;
  --card: rgba(255,255,255,.86);
  --shadow: 0 18px 50px rgba(38, 98, 163, .10);
  --radius: 22px;
}
*{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(--ink);background:linear-gradient(180deg,#fafdff 0%,#f1f7ff 42%,#fff 100%);line-height:1.72;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.82);backdrop-filter:blur(18px);border-bottom:1px solid rgba(220,232,247,.7)}
.nav-container{width:min(1120px,calc(100% - 32px));margin:auto;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em;color:#12365f;font-size:18px}.logo{width:34px;height:34px;border-radius:10px}.site-nav{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.site-nav a{padding:8px 11px;border-radius:999px;color:#40536d;font-size:14px}.site-nav a:hover{background:var(--primary-soft);color:var(--primary-dark)}
.container{width:min(1120px,calc(100% - 32px));margin:auto}.narrow{width:min(820px,calc(100% - 32px));margin:auto}.section{padding:64px 0}.section-head{margin-bottom:24px}.section-kicker,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(70,139,223,.22);background:rgba(70,139,223,.08);color:var(--primary-dark);border-radius:999px;padding:5px 12px;font-size:13px;font-weight:700}.section h2{font-size:30px;line-height:1.22;margin:14px 0 10px;letter-spacing:-.02em}.section p,.card p,.doc-card p{color:var(--muted)}
.centered-hero{padding:78px 0 34px;text-align:center;background:radial-gradient(circle at 50% 0%,rgba(70,139,223,.18),transparent 44%)}.hero-inner{width:min(920px,calc(100% - 32px));margin:auto}.eyebrow{display:inline-block;margin-bottom:16px;border:1px solid rgba(70,139,223,.18);background:#fff;color:var(--primary-dark);padding:7px 14px;border-radius:999px;font-weight:700;font-size:13px}.centered-hero h1{font-size:clamp(36px,7vw,70px);line-height:1.08;letter-spacing:-.055em;margin:0 0 20px}.hero-lead{font-size:18px;color:#4a5c73;margin:0 auto 26px;max-width:760px}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 26px;border-radius:999px;background:var(--primary);color:#fff!important;font-weight:800;box-shadow:0 16px 34px rgba(70,139,223,.28);transition:transform .2s ease,box-shadow .2s ease}.download-btn:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(70,139,223,.34)}.security-tags{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:18px}.security-tags span{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 12px;color:#52657c;font-size:13px}
.product-bento{display:grid;gap:18px;margin-top:36px}.product-showcase{background:linear-gradient(145deg,#fff,#edf6ff);border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow);display:grid;gap:18px}.app-shell{min-height:390px;border-radius:28px;background:linear-gradient(180deg,#e9f3ff,#fff);display:flex;align-items:center;justify-content:center;padding:20px;overflow:hidden}.app-shell img{max-height:520px;filter:drop-shadow(0 28px 38px rgba(22,65,113,.18))}.status-grid{display:grid;gap:12px}.status-card,.card,.category-card,.scenario-card,.faq-item,.principle,.doc-card,.tip-card{background:var(--card);border:1px solid rgba(220,232,247,.92);border-radius:var(--radius);box-shadow:0 12px 35px rgba(37,82,130,.06)}.status-card{padding:16px}.status-card strong{display:block;margin-bottom:4px}.status-dot{width:8px;height:8px;border-radius:99px;background:var(--primary);display:inline-block;margin-right:8px}.card{padding:22px}.capability-grid{display:grid;gap:14px}.card h3,.category-card h3,.scenario-card h3,.doc-card h2,.tip-card h3{margin:0 0 9px;line-height:1.3}.card a,.category-card a,.scenario-card a,.text-link{color:var(--primary-dark);font-weight:800}.roadmap{display:grid;gap:16px;counter-reset:road}.road-step{position:relative;padding:22px;border-radius:24px;border:1px solid var(--line);background:#fff;box-shadow:0 12px 32px rgba(38,98,163,.06)}.road-step:before{counter-increment:road;content:counter(road);width:34px;height:34px;border-radius:12px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;margin-bottom:12px}.road-step h3{margin:0 0 8px}.category-bento,.bento-grid,.scenario-grid,.faq-grid{display:grid;gap:16px}.category-card{padding:22px;min-height:150px;display:flex;flex-direction:column;justify-content:space-between}.category-card p{margin-top:0}.bento-card{padding:24px;border-radius:26px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,rgba(239,247,255,.8));box-shadow:0 14px 38px rgba(38,98,163,.07)}.bento-card h3{font-size:22px;margin:0 0 10px}.bento-card.small h3{font-size:18px}.security-layout{display:grid;gap:24px}.principle-list{display:grid;gap:12px}.principle{padding:16px;display:flex;gap:12px;align-items:flex-start}.principle span{flex:0 0 auto;width:26px;height:26px;border-radius:9px;background:var(--primary-soft);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-weight:900}.scenario-card{padding:20px}.faq-item{padding:18px}.faq-item summary{font-weight:800;cursor:pointer}.faq-item p{margin-bottom:0}.cta-section{width:min(1040px,calc(100% - 32px));margin:40px auto 76px;padding:38px 22px;border:1px solid rgba(70,139,223,.22);border-radius:30px;text-align:center;background:linear-gradient(135deg,rgba(70,139,223,.12),#fff 56%,rgba(70,139,223,.08));box-shadow:var(--shadow)}.cta-section h2{margin:0 0 10px;font-size:30px}.cta-section p{color:var(--muted);max-width:650px;margin:0 auto 22px}
.page-hero{padding:54px 0 24px;background:radial-gradient(circle at 50% 0,rgba(70,139,223,.13),transparent 44%)}.page-hero h1{font-size:clamp(32px,5vw,54px);line-height:1.12;letter-spacing:-.04em;margin:16px 0 12px}.page-summary{font-size:18px;color:#52657c;max-width:760px}.doc-layout{display:grid;gap:22px;align-items:start;padding:28px 0 70px}.doc-content{display:grid;gap:18px}.doc-card{padding:24px}.doc-card ul,.doc-card ol{padding-left:22px;color:#52657c}.steps-list{display:grid;gap:12px;margin-top:14px}.step-block{padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}.step-block strong{display:block;color:#18395d;margin-bottom:4px}.tip-grid{display:grid;gap:14px}.tip-card{padding:18px}.notice{border-left:4px solid var(--primary);background:rgba(70,139,223,.08);padding:16px;border-radius:16px;color:#41556e}.download-line{padding-top:8px}.download-panel{display:grid;gap:18px;align-items:center;text-align:center}.download-steps{display:grid;gap:12px;text-align:left}.download-steps li{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;color:#52657c}.about-grid{display:grid;gap:16px}.site-footer{border-top:1px solid var(--line);background:#fff;padding:34px 0}.footer-inner{width:min(1120px,calc(100% - 32px));margin:auto;display:grid;gap:22px}.footer-brand{font-size:22px;font-weight:900;color:#12365f}.site-footer p{color:var(--muted);margin:.35rem 0 0}.footer-links{display:flex;flex-wrap:wrap;gap:10px}.footer-links a{padding:8px 12px;border-radius:999px;background:#f2f7fd;color:#52657c;font-weight:700;font-size:14px}
@media (min-width:640px){.capability-grid{grid-template-columns:repeat(2,1fr)}.category-bento,.scenario-grid,.faq-grid,.tip-grid,.about-grid{grid-template-columns:repeat(2,1fr)}.download-panel{grid-template-columns:1fr 1fr;text-align:left}.download-panel .download-btn{justify-self:start}}
@media (min-width:900px){.section{padding:82px 0}.product-bento{grid-template-columns:1.3fr .7fr;align-items:stretch}.status-grid{grid-template-rows:repeat(4,1fr)}.capability-grid{grid-template-columns:repeat(4,1fr)}.roadmap{grid-template-columns:repeat(6,1fr);align-items:start}.road-step:nth-child(even){margin-top:38px}.road-step:after{content:"";position:absolute;top:38px;left:64px;right:-18px;height:1px;background:var(--line)}.road-step:last-child:after{display:none}.category-bento{grid-template-columns:repeat(4,1fr);grid-auto-flow:dense}.category-card.featured{grid-column:span 2;min-height:190px}.bento-grid{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(170px,auto)}.bento-card.large{grid-column:span 2;grid-row:span 2}.bento-card.medium{grid-column:span 2}.security-layout{grid-template-columns:1fr .9fr;align-items:center}.doc-layout{grid-template-columns:minmax(0,1fr) 320px}.doc-sidebar{position:sticky;top:96px}.footer-inner{grid-template-columns:1fr auto;align-items:center}.site-nav a{font-size:15px;padding:9px 13px}.centered-hero{padding-top:96px}.product-showcase{grid-template-columns:1fr}.section h2{font-size:40px}}
@media (max-width:520px){.nav-container{width:min(100% - 24px,1120px);justify-content:center}.brand{width:100%;justify-content:center}.site-nav{justify-content:center}.site-nav a{font-size:13px;padding:7px 9px}.container,.narrow,.hero-inner{width:min(100% - 24px,1120px)}.centered-hero{padding-top:54px}.hero-lead,.page-summary{font-size:16px}.section{padding:46px 0}.app-shell{min-height:300px;padding:14px}.download-btn{width:100%;max-width:320px}.cta-section{width:min(100% - 24px,1040px);padding:30px 18px;margin-bottom:52px}.road-step:before{margin-bottom:10px}.page-hero{padding-top:42px}.doc-card{padding:20px}.bento-card,.card,.category-card,.scenario-card{padding:20px}}