:root{--blue:#3f8fe5;--blue-dark:#245f9e;--navy:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--pale:#f5f8fc;--pale2:#edf4fb;--tag:#eaf4ff;--footer:#163f69;--shadow:0 16px 42px rgba(42,93,145,.10);--radius:22px;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;color:var(--text);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.menu-open{overflow:hidden}img,svg{max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{color:inherit}h1,h2,h3{color:var(--navy);line-height:1.25;margin-top:0}h1{font-size:clamp(2.25rem,5vw,4.6rem);letter-spacing:-.045em}h2{font-size:clamp(1.75rem,3vw,2.75rem);letter-spacing:-.025em}h3{font-size:1.25rem}p{margin:0 0 1.2rem}.container{width:min(calc(100% - 40px),var(--max));margin-inline:auto}.skip-link{position:fixed;left:12px;top:-100px;z-index:9999;background:#fff;padding:10px 16px;border-radius:8px;box-shadow:var(--shadow)}.skip-link:focus{top:12px}.security-strip{min-height:34px;padding:6px 20px;text-align:center;font-size:.84rem;color:#dbeeff;background:var(--blue-dark)}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(220,231,242,.9);backdrop-filter:blur(16px)}.header-inner{width:min(calc(100% - 40px),1240px);height:78px;margin:auto;display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;flex:0 0 auto}.brand img{display:block;width:150px;height:46px;object-fit:contain}.desktop-nav{margin-left:auto;align-self:stretch}.desktop-nav>ul{display:flex;align-items:stretch;height:100%;padding:0;margin:0;list-style:none}.nav-item{display:flex;align-items:stretch;position:relative}.nav-trigger,.nav-link{border:0;background:transparent;padding:0 16px;display:flex;align-items:center;gap:6px;min-height:44px;cursor:pointer;font-weight:700;color:#32485f;touch-action:manipulation}.nav-trigger:hover,.nav-trigger:focus-visible,.nav-link:hover,.nav-link:focus-visible,.has-mega.open>.nav-trigger{color:var(--blue);outline:none}.nav-trigger:after,.nav-link:after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:3px;border-radius:3px;background:var(--blue);transform:scaleX(0);transition:.2s}.nav-trigger:hover:after,.nav-trigger:focus-visible:after,.has-mega.open>.nav-trigger:after,.nav-link:hover:after,.nav-link:focus-visible:after{transform:scaleX(1)}.mega-menu{position:fixed;left:50%;top:112px;width:min(calc(100% - 44px),1080px);transform:translate(-50%,-8px);display:grid;grid-template-columns:1.05fr 1.65fr 1fr;gap:28px;padding:30px;background:#fff;border:1px solid var(--line);border-radius:0 0 22px 22px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.has-mega.open .mega-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}.mega-intro{padding-right:20px;border-right:1px solid var(--line)}.mega-intro strong{font-size:1.4rem;color:var(--navy)}.mega-intro p{font-size:.9rem;color:var(--muted);margin-top:8px}.mega-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.mega-links a{padding:10px 12px;border-radius:10px;font-weight:650}.mega-links a:hover,.mega-links a:focus-visible{background:var(--tag);color:var(--blue-dark);outline:none}.mega-feature{display:flex;flex-direction:column;justify-content:center;padding:20px;border-radius:16px;background:var(--pale2)}.mega-feature span,.eyebrow{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;font-weight:800;color:var(--blue)}.mega-feature strong{margin:6px 0;color:var(--navy);font-size:1.15rem}.mega-feature small{color:var(--muted)}.header-actions{display:flex;align-items:center;gap:10px}.download-btn,.primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 20px;border-radius:12px;font-weight:800;line-height:1.2;touch-action:manipulation;position:relative;z-index:1}.download-btn,.primary-btn{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(63,143,229,.2)}.download-btn:hover,.download-btn:focus-visible,.primary-btn:hover,.primary-btn:focus-visible{background:#2d7fd2;outline:3px solid rgba(63,143,229,.2);outline-offset:2px}.secondary-btn{border:1px solid var(--line);background:#fff;color:var(--navy)}.secondary-btn:hover,.secondary-btn:focus-visible{border-color:var(--blue);color:var(--blue-dark);outline:none}.text-link{color:var(--blue-dark);font-weight:800}.text-link:hover,.text-link:focus-visible{text-decoration:underline;text-underline-offset:4px}.menu-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:12px;background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;position:relative;z-index:2;touch-action:manipulation}.menu-toggle span{width:21px;height:2px;background:var(--navy);border-radius:2px}.mobile-menu{position:fixed;inset:0;z-index:2000;background:#fff;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-12px);transition:.2s;overflow:auto}.mobile-menu.open{visibility:visible;opacity:1;pointer-events:auto;transform:none}.mobile-menu-head{position:sticky;top:0;z-index:2;display:flex;justify-content:space-between;align-items:center;height:76px;padding:0 20px;border-bottom:1px solid var(--line);background:#fff}.menu-close{width:46px;height:46px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:2rem;line-height:1;cursor:pointer;touch-action:manipulation}.mobile-menu-body{padding:16px 20px 40px}.mobile-menu details{border-bottom:1px solid var(--line)}.mobile-menu summary{display:flex;align-items:center;justify-content:space-between;min-height:56px;cursor:pointer;font-weight:800;color:var(--navy);list-style:none;touch-action:manipulation}.mobile-menu summary:after{content:"+";font-size:1.4rem;color:var(--blue)}.mobile-menu details[open] summary:after{content:"−"}.mobile-sub{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 0 16px}.mobile-sub a{padding:10px;background:var(--pale);border-radius:10px}.mobile-bottom{display:grid;gap:10px;padding-top:24px}.mobile-bottom>a:not(.download-btn){padding:8px 0;font-weight:700}.section{padding:88px 0}.section-sm{padding:58px 0}.section-pale{background:var(--pale)}.section-pale2{background:var(--pale2)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:38px}.section-head>div{max-width:720px}.section-head p{color:var(--muted);margin:0}.hero{position:relative;padding:76px 0 82px;overflow:hidden;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%)}.hero:before{content:"";position:absolute;width:510px;height:510px;border-radius:50%;background:#eaf4ff;left:-230px;top:45px}.hero-grid{position:relative;display:grid;grid-template-columns:.82fr 1.18fr;gap:72px;align-items:center}.hero-visual{min-height:520px;padding:42px;border-radius:36px;background:var(--pale2);display:flex;align-items:center;justify-content:center}.hero-visual img{max-height:500px;object-fit:contain;filter:drop-shadow(0 24px 38px rgba(36,95,158,.13))}.hero-copy .lead{font-size:1.12rem;max-width:760px}.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.hero-tags span,.tag{display:inline-flex;align-items:center;min-height:32px;padding:5px 11px;background:var(--tag);border-radius:8px;font-size:.84rem;font-weight:750;color:var(--blue-dark)}.hero-actions,.cta-actions{display:flex;align-items:center;flex-wrap:wrap;gap:14px}.hero-links{display:flex;flex-wrap:wrap;gap:18px;margin-top:24px}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.quick-item{padding:30px 26px;border-right:1px solid var(--line)}.quick-item:last-child{border-right:0}.quick-no{font-size:.8rem;font-weight:900;color:var(--blue);letter-spacing:.14em}.quick-item h2{font-size:1.25rem;margin:14px 0 8px}.quick-item p{font-size:.93rem;color:var(--muted)}.bento{display:grid;grid-template-columns:1.35fr .8fr .8fr;grid-template-rows:auto auto;gap:18px}.bento-item{position:relative;min-height:230px;padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}.bento-item:hover{box-shadow:var(--shadow);border-color:#bdd7f1}.bento-item h3{font-size:1.35rem}.bento-item p{max-width:480px}.bento-large{grid-row:span 2;min-height:500px;background:var(--pale2)}.bento-large img{max-height:255px;display:block;margin:18px auto 0}.bento-wide{grid-column:span 2;display:grid;grid-template-columns:1.1fr .8fr;gap:20px;align-items:center;background:#f8fbff}.bento-wide img{max-height:190px}.bento-narrow{background:var(--navy);color:#dcecff}.bento-narrow h3,.bento-narrow .text-link{color:#fff}.process{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:0}.process-step{position:relative;padding:34px 30px 34px 58px;border-top:1px solid var(--line)}.process-step:before{counter-increment:step;content:"0" counter(step);position:absolute;left:0;top:30px;width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:var(--tag);color:var(--blue-dark);font-weight:900}.process-step:after{content:"";position:absolute;left:42px;right:0;top:51px;height:1px;background:var(--line);z-index:-1}.process-step:nth-child(3n):after{display:none}.process-step h3{margin:0 0 10px}.process-step p{font-size:.94rem;color:var(--muted);margin:0}.tabs{border:1px solid var(--line);border-radius:24px;background:#fff;overflow:hidden}.tab-list{display:flex;gap:4px;padding:10px;border-bottom:1px solid var(--line);overflow-x:auto}.tab-list button{flex:1 0 auto;min-height:46px;border:0;border-radius:10px;background:transparent;padding:10px 18px;cursor:pointer;font-weight:800;touch-action:manipulation}.tab-list button[aria-selected=true]{background:var(--tag);color:var(--blue-dark)}.tab-panel{padding:34px}.tab-panel-grid{display:grid;grid-template-columns:1fr .72fr;gap:48px;align-items:center}.tab-panel img{max-height:300px;margin:auto;display:block}.js .tab-panel[hidden]{display:none}.security-band{padding:86px 0;background:var(--blue-dark);color:#dcecff}.security-band h2,.security-band h3{color:#fff}.security-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}.security-checks{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.security-check{padding:15px;border:1px solid rgba(255,255,255,.22);border-radius:12px;background:rgba(255,255,255,.08)}.security-art{padding:28px;border-radius:24px;background:rgba(255,255,255,.08)}.security-art img{filter:brightness(1.05);display:block}.editorial{display:grid;grid-template-columns:1.12fr .88fr;gap:50px}.featured-story{padding:36px;border-radius:24px;background:var(--pale2)}.featured-story h3{font-size:2rem}.story-list{display:grid}.story{padding:18px 0;border-bottom:1px solid var(--line)}.story:first-child{padding-top:0}.story:last-child{border-bottom:0}.story h3{margin:7px 0;font-size:1.1rem}.story p{font-size:.9rem;color:var(--muted);margin:0}.compare{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}.compare-app{display:grid;grid-template-columns:.7fr 1fr;gap:32px;align-items:center;padding:36px;border:1px solid var(--line);border-radius:26px;background:var(--pale)}.compare-app img{max-height:330px;object-fit:contain}.compare-web{padding:42px 34px;border-radius:26px;background:var(--navy);color:#d8e7f5}.compare-web h3{color:#fff;font-size:1.7rem}.check-list,.risk-list{list-style:none;margin:20px 0;padding:0;display:grid;gap:10px}.check-list li,.risk-list li{position:relative;padding-left:26px}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}.risk-list li:before{content:"•";position:absolute;left:5px;color:var(--blue);font-weight:900}.knowledge-risk{display:grid;grid-template-columns:1.05fr .95fr;gap:22px}.knowledge-box,.risk-box{padding:36px;border:1px solid var(--line);border-radius:24px}.risk-box{background:var(--pale)}.timeline{position:relative;max-width:920px;margin:auto;padding-left:38px}.timeline:before{content:"";position:absolute;left:9px;top:10px;bottom:10px;width:2px;background:var(--line)}.timeline-item{position:relative;padding:0 0 34px 25px}.timeline-item:before{content:"";position:absolute;left:-36px;top:7px;width:16px;height:16px;border:4px solid #fff;border-radius:50%;background:var(--blue);box-shadow:0 0 0 1px var(--line)}.timeline-item h3{margin:8px 0}.timeline-item p{color:var(--muted)}.faq-list{max-width:920px;margin:auto;border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;min-height:68px;padding:18px 48px 18px 0;border:0;background:transparent;text-align:left;font-weight:800;color:var(--navy);cursor:pointer;position:relative;touch-action:manipulation}.faq-question:after{content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--blue)}.faq-question[aria-expanded=true]:after{content:"−"}.faq-answer{padding:0 48px 24px 0;color:var(--text)}.final-cta{padding:64px 0;background:var(--pale2);border-top:1px solid var(--line)}.final-cta-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center}.final-cta h2{margin-bottom:12px}.final-cta p{max-width:760px;margin-bottom:0}.cta-actions{justify-content:flex-end}.site-footer{padding:64px 0 24px;background:var(--footer);color:#d9eafa}.footer-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:46px}.footer-grid h2{font-size:1rem;color:#fff;margin-bottom:18px}.footer-grid a{display:block;padding:5px 0;color:#d9eafa}.footer-grid a:hover,.footer-grid a:focus-visible{color:#fff;text-decoration:underline}.footer-brand img{width:170px;height:52px;object-fit:contain;filter:brightness(0) invert(1)}.risk-note{font-size:.84rem;color:#b8d1e8}.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:28px;margin-top:42px;border-top:1px solid rgba(255,255,255,.16);font-size:.84rem;color:#bad2e8}.page-hero{padding:66px 0 58px;background:var(--pale)}.page-hero-grid{display:grid;grid-template-columns:1.15fr .65fr;gap:60px;align-items:center}.page-hero h1{font-size:clamp(2.35rem,4.5vw,4rem);margin-bottom:18px}.page-hero p{font-size:1.08rem;max-width:760px}.page-hero img{max-height:330px;display:block;margin:auto}.breadcrumb{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:30px;font-size:.88rem;color:var(--muted)}.breadcrumb a:hover{color:var(--blue)}.overview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.overview-item{padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff}.overview-item:nth-child(3n+1){grid-column:span 2;background:var(--pale2)}.overview-item h2{font-size:1.55rem}.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:64px;align-items:start}.article-content{min-width:0}.article-content>section{padding:0 0 40px;margin:0 0 40px;border-bottom:1px solid var(--line)}.article-content h2{font-size:1.85rem;margin-bottom:18px}.article-content h3{margin-top:26px}.article-content ul,.article-content ol{padding-left:1.25rem}.article-content li{margin:8px 0}.article-toc{position:sticky;top:116px;padding:24px;border:1px solid var(--line);border-radius:16px;background:#fff}.article-toc strong{display:block;margin-bottom:12px;color:var(--navy)}.article-toc-list{display:grid;gap:6px}.article-toc-list a{padding:7px 9px;border-left:2px solid var(--line);font-size:.89rem;color:var(--muted)}.article-toc-list a:hover,.article-toc-list a.active{color:var(--blue-dark);border-color:var(--blue);background:var(--pale)}.notice{padding:20px 22px;margin:24px 0;border-left:4px solid var(--blue);border-radius:0 12px 12px 0;background:var(--pale2)}.notice strong{display:block;color:var(--navy);margin-bottom:5px}.related{padding:28px;border-radius:18px;background:var(--pale)}.related h2{font-size:1.45rem}.related-links{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.related-links a{padding:14px;background:#fff;border:1px solid var(--line);border-radius:10px;font-weight:750}.related-links a:hover{border-color:var(--blue);color:var(--blue-dark)}.mobile-toc{display:none;margin:0 0 24px;border:1px solid var(--line);border-radius:12px;padding:0 16px}.mobile-toc summary{min-height:48px;display:flex;align-items:center;font-weight:800;cursor:pointer}.mobile-toc a{display:block;padding:8px 0;border-top:1px solid var(--line)}.category-bar{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 34px}.category-bar a{padding:7px 12px;border:1px solid var(--line);border-radius:9px;font-size:.88rem;font-weight:700}.category-bar a:hover{border-color:var(--blue);color:var(--blue-dark)}.news-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:34px}.news-filter button{min-height:42px;padding:8px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}.news-filter button.active{background:var(--tag);border-color:#b7d8f7;color:var(--blue-dark)}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.contact-card{padding:30px;border:1px solid var(--line);border-radius:18px}.support-steps{counter-reset:support;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.support-step{padding:24px;border-top:3px solid var(--blue);background:var(--pale);border-radius:0 0 14px 14px}.support-step:before{counter-increment:support;content:"0" counter(support);display:block;color:var(--blue);font-weight:900;margin-bottom:12px}.maintenance{min-height:100vh;display:grid;place-items:center;padding:30px;background:var(--pale)}.maintenance-card{max-width:620px;padding:48px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}.maintenance-card .brand img{width:180px}.maintenance-card .brand{justify-content:center;margin-bottom:20px}.maintenance-card h1{font-size:2.2rem}.status-dot{display:inline-block;width:12px;height:12px;border-radius:50%;background:var(--blue);margin-right:8px}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media(max-width:1050px){.desktop-nav{display:none}.menu-toggle{display:flex}.header-inner{height:70px}.mega-menu{display:none}.quick-grid{grid-template-columns:repeat(2,1fr)}.quick-item:nth-child(2){border-right:0}.quick-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.bento{grid-template-columns:1fr 1fr}.bento-large{grid-row:auto;grid-column:span 2}.bento-wide{grid-column:span 2}.process{grid-template-columns:repeat(2,1fr)}.process-step:nth-child(3n):after{display:block}.process-step:nth-child(2n):after{display:none}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}.support-steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:780px){.container,.header-inner{width:min(calc(100% - 28px),var(--max))}.security-strip{font-size:.75rem;line-height:1.35}.brand img{width:124px;height:40px}.header-actions>.download-btn{padding:10px 13px;min-height:44px;font-size:.88rem}.section{padding:64px 0}.section-sm{padding:44px 0}.section-head{display:block;margin-bottom:28px}.section-head .text-link{display:inline-block;margin-top:12px}.hero{padding:46px 0 58px}.hero-grid{display:flex;flex-direction:column-reverse;gap:36px}.hero-copy{width:100%}.hero-copy h1{font-size:2.45rem}.hero-visual{min-height:auto;width:100%;padding:26px}.hero-visual img{max-height:440px}.quick-grid{grid-template-columns:1fr}.quick-item{border-right:0!important;border-bottom:1px solid var(--line)!important}.quick-item:last-child{border-bottom:0!important}.bento{display:block}.bento-item{margin-bottom:14px;min-height:0}.bento-large,.bento-wide{display:block;min-height:0}.bento-wide img{margin:20px auto 0}.process{grid-template-columns:1fr}.process-step{padding-left:58px}.process-step:after{display:none!important}.tab-panel{padding:24px 20px}.tab-panel-grid{grid-template-columns:1fr}.tab-panel-grid img{order:-1;max-height:230px}.security-grid,.editorial,.compare,.knowledge-risk,.final-cta-grid,.page-hero-grid,.article-shell{grid-template-columns:1fr}.security-checks{grid-template-columns:1fr}.security-art{order:-1}.compare-app{grid-template-columns:1fr}.compare-app img{max-height:300px}.cta-actions{justify-content:flex-start}.footer-grid{grid-template-columns:1fr 1fr;gap:32px}.footer-brand{grid-column:span 2}.footer-grid>div:last-child{grid-column:auto}.footer-bottom{align-items:flex-start;flex-direction:column}.page-hero{padding:44px 0}.page-hero-grid img{max-height:250px;order:-1}.overview-grid{grid-template-columns:1fr}.overview-item:nth-child(3n+1){grid-column:auto}.article-toc{display:none}.mobile-toc{display:block}.article-content>section{padding-bottom:30px;margin-bottom:30px}.related-links{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr}.support-steps{grid-template-columns:1fr}.mobile-sub{grid-template-columns:1fr 1fr}.maintenance-card{padding:34px 22px}}
@media(max-width:470px){.header-inner{gap:8px}.header-actions{gap:6px}.header-actions>.download-btn{padding-inline:10px}.menu-toggle{width:44px;height:44px}.mobile-sub{grid-template-columns:1fr}.hero-copy h1{font-size:2.15rem}.hero-actions{align-items:stretch;flex-direction:column}.hero-actions>*{width:100%}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-grid>div:last-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.compare-app.no-image{grid-template-columns:1fr}