:root{
  --primary: rgb(70,139,223);
  --primary-dark:#2568b8;
  --primary-soft:#eaf4ff;
  --ink:#10223c;
  --muted:#607089;
  --line:#dce8f7;
  --bg:#f6faff;
  --card:#ffffff;
  --shadow:0 16px 45px rgba(29,79,128,.10);
  --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:linear-gradient(180deg,#f8fbff 0%,#ffffff 42%,#f6faff 100%);line-height:1.75;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);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,232,247,.82)}
.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);letter-spacing:.2px}.logo{width:42px;height:42px;border-radius:12px}.brand-text{font-size:20px}.nav-toggle{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:12px;padding:7px 10px;font-size:22px;line-height:1;box-shadow:0 8px 20px rgba(70,139,223,.08)}
.site-nav{position:absolute;left:16px;right:16px;top:72px;display:none;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)}.site-nav.is-open{display:flex}.site-nav a{padding:10px 12px;border-radius:12px;color:#344863;font-weight:600}.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.section{padding:54px 0}.section-tight{padding:36px 0}.section-title{margin:0 0 14px;font-size:28px;line-height:1.25;letter-spacing:-.02em}.section-desc{margin:0 0 28px;color:var(--muted);max-width:760px}.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;background:#eef7ff;color:var(--primary-dark);border:1px solid #d8ebff;border-radius:999px;font-size:13px;font-weight:800}.muted{color:var(--muted)}
.hero{padding:38px 0 58px;background:radial-gradient(circle at 12% 10%,rgba(70,139,223,.16),transparent 35%),linear-gradient(135deg,#fafdff 0%,#edf7ff 60%,#ffffff 100%)}.hero-layout{display:grid;gap:28px;align-items:center}.hero h1{font-size:36px;line-height:1.15;margin:18px 0 16px;letter-spacing:-.04em}.hero p{font-size:16px;color:#4a5e78;margin:0 0 22px}.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}.hero-tags span,.status-tag{padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.74);border:1px solid var(--line);font-size:13px;color:#36516e;font-weight:700}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 23px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;border:none;box-shadow:0 12px 30px rgba(70,139,223,.26);transition:.2s ease}.download-btn:hover{transform:translateY(-1px);background:var(--primary-dark);box-shadow:0 16px 36px rgba(70,139,223,.30)}
.hero-visual{position:relative;min-height:420px;border-radius:30px;background:linear-gradient(145deg,rgba(255,255,255,.78),rgba(232,244,255,.9));border:1px solid rgba(220,232,247,.9);box-shadow:var(--shadow);padding:22px;overflow:hidden}.app-shell{position:absolute;left:50%;top:32px;transform:translateX(-50%);width:210px}.app-shell img{border-radius:30px;box-shadow:0 18px 45px rgba(16,34,60,.16)}.float-card{position:absolute;background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 14px 32px rgba(28,76,120,.11)}.float-card strong{display:block;font-size:15px}.float-card p{margin:4px 0 0;color:var(--muted);font-size:13px;line-height:1.5}.security-card{left:18px;top:24px;width:174px}.asset-card{right:18px;bottom:36px;width:176px}.risk-card{left:22px;bottom:32px;width:164px}.tag-stack{position:absolute;right:18px;top:34px;display:flex;flex-direction:column;gap:8px;max-width:190px}
.stat-strip{display:grid;grid-template-columns:1fr;gap:12px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:14px;box-shadow:var(--shadow)}.stat-item{padding:14px;border-radius:18px;background:linear-gradient(180deg,#f8fbff,#eef7ff)}.stat-item b{display:block;font-size:18px}.stat-item span{font-size:13px;color:var(--muted)}
.grid{display:grid;gap:16px}.feature-grid,.category-grid,.scenario-grid,.article-grid{display:grid;grid-template-columns:1fr;gap:16px}.card,.category-card,.feature-card,.scenario-card,.faq-item,.info-panel,.page-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 32px rgba(42,96,150,.08)}.card,.feature-card,.scenario-card,.page-card{padding:22px}.category-card{padding:20px;transition:.2s ease}.category-card:hover{transform:translateY(-2px);border-color:#b8dcff;box-shadow:var(--shadow)}.category-card h3,.feature-card h3,.scenario-card h3,.page-card h3{margin:0 0 8px}.category-card p,.feature-card p,.scenario-card p,.page-card p{margin:0;color:var(--muted)}.card-link{display:inline-flex;margin-top:14px;color:var(--primary-dark);font-weight:800}.icon-dot{width:38px;height:38px;border-radius:14px;background:var(--primary-soft);display:grid;place-items:center;color:var(--primary);font-weight:900;margin-bottom:12px}.step-grid{display:grid;grid-template-columns:1fr;gap:14px}.step-card{position:relative;padding:20px 20px 20px 64px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 10px 26px rgba(42,96,150,.07)}.step-num{position:absolute;left:18px;top:20px;width:32px;height:32px;border-radius:11px;background:var(--primary);color:#fff;font-weight:900;display:grid;place-items:center}.step-card h3{margin:0 0 6px}.step-card p{margin:0;color:var(--muted)}.step-card a{display:inline-block;margin-top:10px;color:var(--primary-dark);font-weight:800}.security-layout{display:grid;gap:22px;align-items:center}.security-panel{padding:24px;border-radius:28px;border:1px solid var(--line);background:linear-gradient(145deg,#ffffff,#eef7ff);box-shadow:var(--shadow)}.security-panel ul,.check-list{padding:0;margin:16px 0 0;list-style:none}.security-panel li,.check-list li{margin:10px 0;padding-left:28px;position:relative;color:#435872}.security-panel li:before,.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--primary);font-weight:900}.process{display:grid;gap:14px}.process-step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.process-step b{display:block;color:var(--primary-dark);margin-bottom:6px}.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}.cta-section{text-align:center;border-radius:30px;background:linear-gradient(135deg,#eaf4ff,#ffffff 70%);border:1px solid var(--line);padding:36px 20px;box-shadow:var(--shadow)}.cta-section h2{margin:0 0 10px}.cta-section p{margin:0 auto 20px;max-width:680px;color:var(--muted)}
.page-hero{padding:44px 0 28px;background:linear-gradient(135deg,#fafdff,#eef7ff)}.page-hero h1{font-size:34px;line-height:1.2;margin:14px 0}.page-hero p{max-width:780px;color:var(--muted);margin:0}.content-layout{display:grid;gap:20px;align-items:start}.article-body{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}.article-body h2{margin:24px 0 10px;font-size:22px}.article-body p{color:#40536e}.tip-box{background:#f1f8ff;border:1px solid #d6eaff;border-radius:20px;padding:18px;margin:20px 0}.tip-box strong{color:var(--primary-dark)}.note-grid{display:grid;gap:14px}.mini-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:16px}.mini-card h3{margin:0 0 8px;font-size:17px}.mini-card p{margin:0;color:var(--muted)}
.download-panel{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:var(--shadow);text-align:center}.download-panel .download-btn{margin:10px 0 20px}.ordered-steps{counter-reset:item;list-style:none;padding:0;margin:18px 0;display:grid;gap:12px}.ordered-steps li{counter-increment:item;background:#f8fbff;border:1px solid var(--line);border-radius:16px;padding:14px 14px 14px 52px;position:relative;text-align:left}.ordered-steps li:before{content:counter(item);position:absolute;left:14px;top:14px;width:26px;height:26px;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}.site-footer{margin-top:48px;background:#10223c;color:#dbe8f7;padding:44px 0 18px}.footer-grid{display:grid;gap:24px}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:10px}.footer-brand img{width:38px;height:38px;border-radius:12px}.site-footer p{color:#b8c7da;margin:0;max-width:520px}.site-footer h3{margin:0 0 10px;color:#fff}.site-footer a{display:block;color:#c9d8e8;margin:7px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:16px;color:#93a9c0;font-size:13px}
@media (min-width:640px){.category-grid,.scenario-grid,.article-grid,.note-grid{grid-template-columns:repeat(2,1fr)}.stat-strip{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:44px}.section-title{font-size:34px}}
@media (min-width:900px){.nav-toggle{display:none}.site-nav{position:static;display:flex!important;flex-direction:row;background:transparent;border:none;border-radius:0;padding:0;box-shadow:none;align-items:center}.site-nav a{padding:8px 12px}.hero{padding:72px 0}.hero-layout{grid-template-columns:1.02fr .98fr;gap:46px}.hero h1{font-size:58px}.feature-grid{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(4,1fr)}.scenario-grid{grid-template-columns:repeat(3,1fr)}.step-grid{grid-template-columns:repeat(3,1fr)}.security-layout{grid-template-columns:1fr 1fr}.process{grid-template-columns:repeat(4,1fr)}.content-layout{grid-template-columns:1.35fr .65fr}.footer-grid{grid-template-columns:1.4fr .8fr .8fr}.stat-strip{grid-template-columns:repeat(4,1fr)}.page-hero h1{font-size:46px}.article-body{padding:34px}}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.hero-visual{min-height:390px;padding:16px}.app-shell{width:184px}.tag-stack{right:10px;top:22px}.status-tag{font-size:12px;padding:6px 9px}.float-card{padding:11px}.security-card{left:10px}.asset-card{right:10px;width:150px}.risk-card{left:10px;width:150px}.download-btn{width:100%;padding-left:18px;padding-right:18px}.hero h1{font-size:32px}.section{padding:42px 0}}