:root{
  --primary:rgb(70,139,223);
  --primary-dark:#2567b8;
  --primary-soft:#eaf4ff;
  --ink:#0f243d;
  --muted:#5d7188;
  --line:#dce8f6;
  --panel:#ffffff;
  --soft:#f7fbff;
  --shadow:0 18px 50px rgba(22,72,128,.08);
  --radius:20px;
}
*{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,#f7fbff 0%,#ffffff 34%,#f4f9ff 100%);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;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,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(220,232,246,.86)}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:#122843;letter-spacing:.2px}
.logo{width:36px;height:36px;border-radius:11px;box-shadow:0 10px 24px rgba(70,139,223,.18)}
.site-nav{display:none;align-items:center;gap:8px;position:absolute;top:72px;left:16px;right:16px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.site-nav.is-open{display:grid}
.site-nav a{padding:10px 12px;border-radius:12px;color:#314a66;font-size:14px}
.site-nav a:hover{background:var(--primary-soft);color:var(--primary-dark)}
.nav-toggle{border:1px solid var(--line);background:#fff;color:#23415f;border-radius:999px;padding:8px 14px;font-weight:700}
.section{padding:56px 0}
.section-head{margin-bottom:22px}.section-eyebrow{display:inline-flex;color:var(--primary-dark);font-weight:800;font-size:13px;letter-spacing:.06em;margin-bottom:8px}.section h2,.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25;margin:0 0 10px}.section p{color:var(--muted)}
.docs-hero{padding:64px 0 34px;background:radial-gradient(circle at 20% 10%,rgba(70,139,223,.16),transparent 34%),linear-gradient(180deg,#fff,#f7fbff)}
.docs-hero-grid{display:grid;gap:28px;align-items:center}.hero-copy h1{font-size:clamp(34px,7vw,64px);line-height:1.08;letter-spacing:-.04em;margin:0 0 18px}.hero-copy p{font-size:17px;color:#516980;margin:0 0 22px}.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.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;font-weight:800;box-shadow:0 14px 30px rgba(70,139,223,.26);border:0;white-space:nowrap}.download-btn:hover{transform:translateY(-1px);box-shadow:0 18px 38px rgba(70,139,223,.32)}
.hero-tags,.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.tag,.pill{display:inline-flex;align-items:center;border:1px solid #cfe3fb;background:#fff;color:#315b86;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}.hero-visual{position:relative;border:1px solid var(--line);border-radius:28px;background:linear-gradient(145deg,rgba(255,255,255,.95),rgba(233,244,255,.88));padding:22px;box-shadow:var(--shadow);overflow:hidden}.app-frame{margin:0 auto;width:min(330px,82%);border-radius:30px}.status-stack{display:grid;gap:10px;margin-top:16px}.status-card{background:rgba(255,255,255,.88);border:1px solid rgba(207,227,251,.9);border-radius:17px;padding:12px 14px;color:#34536f;box-shadow:0 12px 26px rgba(22,72,128,.06)}.status-card strong{display:block;color:#102744;margin-bottom:2px}.status-card small{color:var(--muted)}
.safety-strip{padding:18px 0}.safety-strip-inner{display:grid;gap:10px;border:1px solid #cfe3fb;background:linear-gradient(90deg,#eff7ff,#fff);border-radius:20px;padding:16px;box-shadow:0 10px 26px rgba(70,139,223,.08)}.safety-item{display:flex;gap:9px;align-items:flex-start;color:#284863;font-weight:700}.safety-dot{width:9px;height:9px;margin-top:10px;border-radius:50%;background:var(--primary);flex:0 0 auto}
.docs-layout{display:grid;gap:24px}.docs-sidebar{background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px;box-shadow:var(--shadow)}.docs-sidebar h2{font-size:15px;margin:0 0 12px;color:#163456}.docs-sidebar nav{display:grid;gap:8px}.docs-sidebar a{padding:10px 12px;border-radius:12px;color:#395975;background:#f8fbff;border:1px solid transparent;font-size:14px}.docs-sidebar a:hover{border-color:#cfe3fb;background:#eff7ff;color:var(--primary-dark)}.docs-content{min-width:0}.doc-section{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;margin-bottom:22px;box-shadow:var(--shadow)}.doc-section h2{margin:0 0 12px;font-size:clamp(22px,3vw,32px)}.doc-intro{font-size:16px;color:#526a82}.notice-box{border-left:4px solid var(--primary);background:#f0f7ff;border-radius:14px;padding:14px 16px;color:#32536f;margin:16px 0}.notice-box strong{color:#17395d}
.docs-steps{display:grid;gap:14px}.step-item{display:grid;grid-template-columns:auto 1fr;gap:14px;padding:16px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#fbfdff);border-radius:18px}.step-num{width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}.step-item h3{margin:0 0 4px;font-size:18px}.step-item p{margin:0 0 6px}.doc-link{color:var(--primary-dark);font-weight:800}.docs-category-grid,.feature-doc-grid,.risk-grid,.scenario-grid,.faq-summary{display:grid;gap:14px}.category-card,.document-card,.risk-item,.scenario-card,.faq-item,.principle-item,.info-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:18px}.category-card{background:linear-gradient(180deg,#fff,#f8fbff)}.category-card h3,.document-card h3,.risk-item h3,.scenario-card h3,.faq-item h3,.info-card h3{margin:0 0 8px;color:#14304e}.category-card p,.document-card p,.risk-item p,.scenario-card p,.faq-item p,.info-card p{margin:0 0 10px}.principle-list{display:grid;gap:12px}.principle-item{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}.principle-num{font-size:13px;font-weight:900;color:#fff;background:var(--primary);border-radius:12px;padding:8px 10px}.principle-item h3{margin:0 0 4px}.risk-item{background:linear-gradient(180deg,#fff,#fffaf7)}.risk-label{display:inline-flex;background:#fff3e8;color:#8a4b17;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800;margin-bottom:8px}.cta-section{padding:52px 0 70px}.cta-box{text-align:center;border:1px solid #cfe3fb;background:linear-gradient(145deg,#f1f8ff,#fff);border-radius:28px;padding:34px 20px;box-shadow:var(--shadow)}.cta-box h2{margin:0 0 10px;font-size:clamp(25px,4vw,38px)}.cta-box p{margin:0 auto 20px;color:#526a82;max-width:680px}
.page-hero{padding:52px 0 26px}.page-hero-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow)}.badge{display:inline-flex;background:var(--primary-soft);color:var(--primary-dark);border:1px solid #cfe3fb;border-radius:999px;padding:7px 12px;font-weight:800;font-size:13px;margin-bottom:14px}.page-hero h1{font-size:clamp(30px,5vw,48px);line-height:1.18;margin:0 0 12px}.page-hero p{color:#526a82;margin:0;max-width:780px}.article-layout{display:grid;gap:22px;align-items:start}.article-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}.article-card h2{margin:0 0 12px;font-size:24px}.article-card p{color:#526a82}.article-card ul,.article-card ol{padding-left:22px;color:#425f79}.article-card li{margin:8px 0}.side-panel{background:#f3f9ff;border:1px solid #cfe3fb;border-radius:22px;padding:18px}.side-panel h2{font-size:18px;margin:0 0 10px}.check-list{display:grid;gap:10px;margin:14px 0}.check-list li{list-style:none;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff}.button-row{margin-top:20px}.download-page-grid{display:grid;gap:18px}.download-only{text-align:center}.site-footer{background:#0f243d;color:#dfeeff;padding:42px 0 0;margin-top:30px}.footer-grid{display:grid;gap:24px}.site-footer p{color:#b7c9da}.site-footer h2{font-size:16px;margin:0 0 10px;color:#fff}.site-footer a{display:block;color:#d9e9f8;margin:7px 0}.footer-brand{color:#fff}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding:18px;color:#9fb5ca;font-size:13px}
@media (min-width:700px){.docs-hero-grid{grid-template-columns:1.02fr .98fr}.safety-strip-inner{grid-template-columns:repeat(3,1fr)}.docs-category-grid,.feature-doc-grid,.risk-grid,.scenario-grid,.faq-summary{grid-template-columns:repeat(2,1fr)}.download-page-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.4fr .8fr .8fr}}
@media (min-width:980px){.nav-toggle{display:none}.site-nav{display:flex;position:static;padding:0;background:transparent;border:0;box-shadow:none}.docs-hero{padding:82px 0 42px}.status-stack{position:absolute;right:18px;top:18px;width:210px}.status-card:nth-child(2){transform:translateX(-22px)}.status-card:nth-child(3){transform:translateX(8px)}.docs-layout{grid-template-columns:260px minmax(0,1fr);align-items:start}.docs-sidebar{position:sticky;top:92px}.doc-section{padding:28px}.docs-category-grid{grid-template-columns:repeat(3,1fr)}.feature-doc-grid{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.scenario-grid{grid-template-columns:repeat(3,1fr)}.principle-item{grid-template-columns:76px 1fr}.article-layout{grid-template-columns:minmax(0,1fr) 300px}.article-layout .side-panel{position:sticky;top:92px}.page-hero{padding-top:66px}}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.download-btn{width:100%}.hero-actions{width:100%}.doc-section,.article-card,.page-hero-card{padding:18px}.site-nav{left:12px;right:12px}.docs-hero{padding-top:42px}}