:root{--blue:#3f8fe5;--deep:#245f9e;--ink:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--soft:#f5f8fc;--soft2:#edf4fb;--footer:#163f69;--shadow:0 16px 42px rgba(42,93,145,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.72;background:#fff;overflow-x:hidden}a{color:var(--deep);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto;display:block}.container{width:min(1180px,calc(100% - 40px));margin:auto}.safety-strip{background:#edf4fb;color:#35506d;font-size:14px;padding:8px 0;text-align:center}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-row{height:76px;display:grid;grid-template-columns:180px 1fr auto;gap:24px;align-items:center}.brand img{width:140px;max-height:42px;object-fit:contain}.desktop-nav{display:flex;justify-content:center;gap:8px}.nav-item{position:relative}.nav-trigger,.nav-about{border:0;background:transparent;padding:25px 14px;color:#2e4359;font:inherit;cursor:pointer}.nav-trigger:hover,.nav-trigger:focus,.nav-about:hover{background:#f5f8fc;text-decoration:none}.mega{position:absolute;left:50%;top:66px;transform:translateX(-50%);width:min(720px,78vw);background:#fff;border:1px solid var(--line);border-radius:0 0 18px 18px;box-shadow:var(--shadow);padding:26px;display:none;grid-template-columns:1.1fr 2fr;gap:26px}.nav-item.open .mega{display:grid}.mega h3{margin:0 0 8px;color:var(--ink)}.mega p{margin:0;color:var(--muted);font-size:14px}.mega-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mega-links a{padding:10px;border-radius:8px}.mega-links a:hover{background:#edf4fb;text-decoration:none}.download-btn,.btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 20px;border-radius:10px;background:var(--blue);color:#fff!important;font-weight:700;border:1px solid transparent;text-decoration:none!important}.download-btn:hover,.btn:hover{background:#2d7fd2}.btn.secondary{background:#fff;color:var(--deep)!important;border-color:var(--line)}.mobile-menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;font-size:22px}.mobile-overlay{display:none;position:fixed;inset:0;background:#fff;z-index:1500;overflow:auto}.mobile-overlay.open{display:block}.mobile-top{height:76px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.mobile-top img{width:140px}.mobile-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;font-size:24px}.mobile-groups{padding:24px 0}.mobile-group{border-bottom:1px solid var(--line)}.mobile-group button{width:100%;min-height:52px;display:flex;justify-content:space-between;align-items:center;border:0;background:#fff;font:inherit;font-weight:700;color:var(--ink);text-align:left}.mobile-links{display:none;padding:0 0 16px}.mobile-group.open .mobile-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}.mobile-links a{padding:8px 0}.mobile-bottom{display:flex;gap:16px;align-items:center;flex-wrap:wrap;padding:24px 0}
.hero{padding:72px 0 54px}.hero-grid{display:grid;grid-template-columns:42% 58%;align-items:center;gap:52px}.hero-visual{background:var(--soft2);border-radius:36px;padding:26px;min-height:520px;display:grid;place-items:center}.hero-visual img{max-height:500px}.eyebrow{display:inline-block;color:var(--deep);font-weight:700;letter-spacing:.04em;margin-bottom:12px}.hero h1,.page-hero h1{font-size:clamp(38px,5vw,66px);line-height:1.12;color:var(--ink);margin:0 0 16px;letter-spacing:-.03em}.hero .subtitle{font-size:22px;color:var(--deep);margin:0 0 16px}.hero p{font-size:17px}.hero-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:24px 0}.tags{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.tag{background:#eaf4ff;color:#356a9c;padding:6px 10px;border-radius:7px;font-size:13px}.text-links{display:flex;gap:18px;flex-wrap:wrap;font-weight:600}.section{padding:76px 0}.section.soft{background:var(--soft)}.section-head{max-width:760px;margin-bottom:34px}.section-head h2{font-size:clamp(30px,4vw,46px);line-height:1.2;color:var(--ink);margin:0 0 12px}.section-head p{margin:0;color:var(--muted)}.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:28px 24px;border-right:1px solid var(--line)}.quick-item:last-child{border-right:0}.quick-num{font-size:13px;color:var(--blue);font-weight:800}.quick-item h3{color:var(--ink);margin:8px 0}.bento{display:grid;grid-template-columns:1.35fr .85fr .85fr;grid-template-rows:auto auto;gap:18px}.bento article{border:1px solid var(--line);border-radius:20px;padding:28px;background:#fff;overflow:hidden}.bento .large{grid-row:span 2;background:#f8fbff}.bento .wide{grid-column:span 2;background:#edf4fb}.bento img{max-height:260px;margin:18px auto}.bento h3{color:var(--ink);font-size:24px;margin:0 0 10px}.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:0}.step{position:relative;padding:18px 16px 18px 0}.step:not(:last-child):after{content:"";position:absolute;top:31px;right:8px;width:calc(100% - 48px);height:1px;background:var(--line)}.step-num{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-size:12px;font-weight:800;position:relative;z-index:2}.step h3{font-size:17px;color:var(--ink)}.step p{font-size:14px;color:var(--muted)}.tabs{display:flex;gap:8px;overflow:auto;padding-bottom:6px}.tab-btn{border:1px solid var(--line);background:#fff;min-height:44px;padding:0 16px;border-radius:9px;color:var(--ink);white-space:nowrap}.tab-btn[aria-selected="true"]{background:var(--deep);color:#fff;border-color:var(--deep)}.tab-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:center;padding:34px 0}.tab-panel[hidden]{display:none}.tab-panel img{max-height:360px;margin:auto}.security-band{background:var(--deep);color:#dceeff}.security-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}.security-band h2{color:#fff;font-size:44px;margin-top:0}.security-band .btn{background:#fff;color:var(--deep)!important}.checklist{list-style:none;padding:0;margin:20px 0}.checklist li{padding:11px 0;border-bottom:1px solid rgba(255,255,255,.18)}.editorial{display:grid;grid-template-columns:1.25fr .75fr;gap:48px}.feature-article{padding:36px;background:var(--soft2);border-radius:22px}.feature-article h3{font-size:32px;color:var(--ink)}.article-list article{padding:18px 0;border-bottom:1px solid var(--line)}.article-list h3{font-size:18px;margin:3px 0;color:var(--ink)}.compare{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}.compare-app{background:var(--soft2);border-radius:22px;padding:32px;display:grid;grid-template-columns:.7fr 1.3fr;gap:26px;align-items:center}.compare-app img{max-height:430px}.compare-web{padding:36px;border:1px solid var(--line);border-radius:22px}.stake-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.stake-grid>div{padding:34px;border-top:3px solid var(--blue);background:#fff}.timeline{position:relative;margin-left:14px}.timeline:before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:var(--line)}.timeline article{position:relative;padding:0 0 26px 36px}.timeline article:before{content:"";position:absolute;left:0;top:8px;width:12px;height:12px;border-radius:50%;background:var(--blue)}.timeline h3{margin:3px 0;color:var(--ink)}.faq-list{max-width:900px}.faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;min-height:62px;border:0;background:#fff;text-align:left;font:inherit;color:var(--ink);font-weight:700;display:flex;justify-content:space-between;align-items:center}.faq-a{padding:0 0 20px;display:none}.faq-item.open .faq-a{display:block}.cta{background:var(--soft2);border-radius:28px;padding:48px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{margin:0 0 8px;color:var(--ink);font-size:38px}.site-footer{background:var(--footer);color:#d9e9f8;padding:58px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px}.footer-grid h3{color:#fff;font-size:16px}.footer-grid a{color:#d9e9f8;display:block;padding:5px 0}.footer-logo{width:150px;filter:brightness(0) invert(1)}.footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.page-hero{padding:66px 0 42px;background:linear-gradient(180deg,#f8fbff,#fff)}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:16px}.page-hero .summary{max-width:800px;font-size:18px}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:64px;padding:50px 0 80px}.article-body h2{color:var(--ink);font-size:31px;margin:52px 0 14px;scroll-margin-top:110px}.article-body h2:first-child{margin-top:0}.article-body h3{color:var(--ink);margin-top:28px}.article-body p,.article-body li{font-size:16px}.article-body ul,.article-body ol{padding-left:22px}.note{border-left:4px solid var(--blue);background:var(--soft2);padding:18px 20px;margin:26px 0;border-radius:0 12px 12px 0}.toc{position:sticky;top:104px;align-self:start;border-left:1px solid var(--line);padding-left:20px}.toc h3{margin-top:0;color:var(--ink);font-size:15px}.toc a{display:block;padding:7px 0;color:var(--muted);font-size:14px}.toc a.active{color:var(--deep);font-weight:700}.related{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}.related-links{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.related-links a{background:var(--soft);padding:14px;border-radius:9px}.risk{margin-top:42px;background:#fff8ea;border:1px solid #f0dfba;padding:20px;border-radius:12px}.center-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:28px 0}.center-grid article{padding:26px;border:1px solid var(--line);border-radius:16px}.mobile-toc{display:none}
@media(max-width:900px){.desktop-nav{display:none}.header-row{grid-template-columns:1fr auto auto;gap:10px}.mobile-menu-btn{display:block}.hero-grid{grid-template-columns:1fr}.hero-copy{order:-1}.hero-visual{min-height:auto}.quick-grid{grid-template-columns:1fr 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,.bento .wide{grid-column:auto;grid-row:auto}.flow{grid-template-columns:1fr 1fr 1fr}.step:not(:last-child):after{display:none}.security-grid,.editorial,.compare,.stake-grid,.content-layout{grid-template-columns:1fr}.toc{display:none}.mobile-toc{display:block;background:var(--soft);padding:14px;border-radius:10px;margin-bottom:24px}.mobile-toc summary{font-weight:700;color:var(--ink)}.tab-panel{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.compare-app{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.container{width:min(100% - 28px,1180px)}.header-row{height:68px}.brand img{width:120px}.header-row>.download-btn{padding:0 13px}.hero{padding:46px 0}.hero h1,.page-hero h1{font-size:38px}.hero-visual{padding:16px;border-radius:22px}.quick-grid,.bento,.flow,.editorial,.compare,.stake-grid,.footer-grid,.center-grid{grid-template-columns:1fr}.quick-item{border-right:0!important;border-bottom:1px solid var(--line)}.flow .step{padding-left:42px}.step-num{position:absolute;left:0;top:20px}.security-band h2{font-size:34px}.compare-app{grid-template-columns:1fr}.cta{padding:30px;align-items:flex-start;flex-direction:column}.cta h2{font-size:30px}.related-links{grid-template-columns:1fr}.mobile-links{grid-template-columns:1fr}.section{padding:56px 0}.content-layout{padding-top:28px}.article-body h2{font-size:27px}.page-hero{padding:42px 0 26px}}