:root{--blue:#3f8fe5;--blue-dark:#245f9e;--ink:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--soft:#f5f8fc;--soft2:#edf4fb;--tag:#eaf4ff;--footer:#163f69;--shadow:0 16px 42px rgba(42,93,145,.10);--radius:24px;--max:1180px}
*{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",sans-serif;color:var(--text);background:#fff;line-height:1.72;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:var(--blue-dark);text-decoration:none}a:hover{text-decoration:underline}button,a{touch-action:manipulation}button{font:inherit}.wrap{width:min(calc(100% - 40px),var(--max));margin:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:16px;top:-80px;z-index:9999;background:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}.skip-link:focus{top:16px}.safety-strip{background:#eef6ff;color:#294d71;text-align:center;padding:8px 20px;font-size:13px;border-bottom:1px solid var(--line)}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{width:min(calc(100% - 40px),var(--max));height:74px;margin:auto;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;flex:0 0 auto}.brand img{width:150px;max-height:44px;object-fit:contain}.desktop-nav{display:flex;align-items:stretch;gap:4px;flex:1;height:100%;justify-content:center}.nav-group{position:relative;display:flex;align-items:center}.nav-trigger,.nav-link{border:0;background:transparent;color:#30465c;padding:0 16px;height:100%;display:flex;align-items:center;cursor:pointer;position:relative}.nav-group.is-active>.nav-trigger,.nav-group.is-active>.nav-link,.nav-trigger[aria-expanded=true]{color:var(--blue-dark)}.nav-group.is-active>.nav-trigger:after,.nav-group.is-active>.nav-link:after,.nav-trigger[aria-expanded=true]:after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:3px;background:var(--blue);border-radius:3px 3px 0 0}.mega-menu{position:fixed;top:calc(74px + 33px);left:50%;transform:translateX(-50%);width:min(calc(100% - 60px),1040px);background:#fff;border:1px solid var(--line);border-radius:0 0 22px 22px;box-shadow:var(--shadow);padding:28px;display:grid;grid-template-columns:1fr 2fr;gap:30px}.mega-menu[hidden]{display:none}.mega-intro{background:var(--soft);padding:24px;border-radius:18px}.mega-intro strong{font-size:24px;color:var(--ink)}.mega-intro p{margin:8px 0 14px}.mega-links{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.mega-links a{border:1px solid var(--line);border-radius:16px;padding:16px 18px;color:var(--ink);display:flex;justify-content:space-between;align-items:center}.mega-links small{color:var(--muted)}.header-actions{display:flex;align-items:center;gap:10px}.download-btn{min-height:44px;padding:10px 20px;border-radius:12px;background:var(--blue);color:#fff!important;display:inline-flex;align-items:center;justify-content:center;font-weight:700;text-decoration:none!important;box-shadow:0 10px 22px rgba(63,143,229,.20)}.download-btn:hover{background:#2d7fd2}.primary-btn{min-height:44px;padding:10px 20px;border-radius:12px;background:#fff;color:var(--blue-dark)!important;display:inline-flex;align-items:center;justify-content:center;font-weight:700;text-decoration:none!important}.primary-btn:hover{background:#eef6ff}.download-btn:focus-visible,.nav-trigger:focus-visible,.mobile-menu-button:focus-visible,.faq-question:focus-visible,.tab-button:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:3px}.mobile-menu-button{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:5px;position:relative;z-index:2}.mobile-menu-button span{width:20px;height:2px;background:var(--ink)}.mobile-menu{position:fixed;inset:0;z-index:2000;background:#fff;overflow-y:auto;padding:20px}.mobile-menu[hidden]{display:none}.mobile-menu-top{display:flex;justify-content:space-between;align-items:center;max-width:760px;margin:auto}.mobile-menu-close{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:30px;line-height:1}.mobile-menu-groups{max-width:760px;margin:26px auto}.mobile-accordion{border-top:1px solid var(--line)}.mobile-accordion-trigger{width:100%;min-height:54px;background:#fff;border:0;display:flex;justify-content:space-between;align-items:center;text-align:left;color:var(--ink);font-weight:700;font-size:18px}.mobile-accordion-panel{padding:0 0 14px}.mobile-accordion-panel[hidden]{display:none}.mobile-accordion-panel a{display:block;padding:10px 8px;color:var(--text)}.mobile-menu-bottom{max-width:760px;margin:auto;padding:20px 0;border-top:1px solid var(--line);display:flex;gap:18px;align-items:center;flex-wrap:wrap}.menu-open{overflow:hidden}
main{min-height:60vh}.section{padding:92px 0}.section.soft{background:var(--soft)}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:36px}.eyebrow{color:var(--blue-dark);font-weight:800;letter-spacing:.08em;font-size:13px;text-transform:uppercase}.section h2,.page-hero h1,.hero h1{color:var(--ink);line-height:1.16;letter-spacing:-.02em}.section h2{font-size:clamp(30px,4vw,48px);margin:8px 0 12px}.section-head p{max-width:620px;margin:0}.text-link{font-weight:700}.tag{display:inline-flex;background:var(--tag);color:var(--blue-dark);padding:5px 10px;border-radius:999px;font-size:13px;font-weight:700}.notice-box{border-left:4px solid var(--blue);background:#f2f8ff;padding:18px 20px;border-radius:0 14px 14px 0}.risk-box{border:1px solid #f0d7b3;background:#fffaf2;padding:20px;border-radius:16px;color:#71572e}
.hero{padding:76px 0 60px}.hero-grid{display:grid;grid-template-columns:42% 58%;align-items:center;gap:30px}.hero-media{background:var(--soft2);border-radius:36px;padding:34px;box-shadow:var(--shadow)}.hero-media img{max-height:520px;object-fit:contain;margin:auto}.hero-copy{padding-left:30px}.hero h1{font-size:clamp(42px,5.5vw,72px);margin:10px 0 18px}.hero-subtitle{font-size:20px;color:var(--blue-dark);font-weight:800}.hero p{font-size:17px;max-width:720px}.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:24px 0}.hero-links{display:flex;gap:18px;flex-wrap:wrap;margin-top:22px}.capability-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.capability-tags span{padding:7px 10px;border:1px solid var(--line);border-radius:9px;font-size:13px;background:#fff}.quick-tasks{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.task{padding:30px 26px;border-right:1px solid var(--line)}.task:last-child{border-right:0}.task-no{font-size:13px;color:var(--muted);font-weight:800}.task h2{font-size:22px;margin:10px 0;color:var(--ink)}.task p{font-size:14px;margin-bottom:14px}
.bento{display:grid;grid-template-columns:1.25fr .75fr .8fr;grid-auto-rows:minmax(210px,auto);gap:16px}.bento-item{border:1px solid var(--line);background:#fff;border-radius:24px;padding:26px;overflow:hidden;position:relative;display:flex;flex-direction:column;justify-content:space-between}.bento-item:hover{box-shadow:var(--shadow)}.bento-item h3{font-size:26px;color:var(--ink);margin:0 0 8px}.bento-main{grid-row:span 2;background:linear-gradient(180deg,#f5faff,#fff)}.bento-main img{max-height:250px;margin:16px auto 0}.bento-wide{grid-column:2/4;background:var(--soft2)}.bento-learn{background:#f9fbfe}.bento-item .mini-list{margin:12px 0 0;padding-left:18px}.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:0;position:relative}.flow:before{content:"";position:absolute;left:7%;right:7%;top:26px;height:1px;background:var(--line)}.flow-step{position:relative;padding:0 14px}.flow-no{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1px solid var(--line);font-weight:800;color:var(--blue-dark);position:relative;z-index:1}.flow-step h3{color:var(--ink);font-size:17px;line-height:1.35}.flow-step p{font-size:14px;color:var(--muted)}
.tabs-shell{border:1px solid var(--line);border-radius:28px;overflow:hidden;background:#fff}.tab-list{display:flex;gap:6px;padding:12px;overflow-x:auto;border-bottom:1px solid var(--line);scrollbar-width:thin}.tab-button{flex:0 0 auto;border:0;background:#fff;color:var(--text);padding:12px 18px;border-radius:10px;cursor:pointer;font-weight:700}.tab-button[aria-selected=true]{background:var(--tag);color:var(--blue-dark)}.tab-panel{padding:34px;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:30px}.tab-panel[hidden]{display:none}.tab-panel img{max-height:260px;margin:auto}.security-band{background:var(--blue-dark);color:#eaf4ff}.security-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.security-band h2{color:#fff}.security-band .eyebrow{color:#c9e3ff}.security-visual{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px;align-items:center}.security-visual img{max-height:240px;filter:brightness(1.03)}.security-checks{list-style:none;margin:0;padding:0}.security-checks li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.18)}.security-checks li:before{content:"✓";margin-right:10px;color:#bfe0ff}.security-band .primary-btn{background:#fff;color:var(--blue-dark)!important}
.editorial{display:grid;grid-template-columns:1.3fr .9fr;gap:44px}.lead-story{padding:38px;background:var(--soft);border-radius:28px;min-height:100%}.lead-story h3{font-size:34px;color:var(--ink);line-height:1.2}.article-list article{padding:0 0 18px;margin-bottom:18px;border-bottom:1px solid var(--line)}.article-list h3{font-size:19px;margin:7px 0}.article-list p{margin:5px 0;color:var(--muted);font-size:14px}.compare{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.app-compare,.web-compare{border:1px solid var(--line);border-radius:26px;padding:32px}.app-compare{background:var(--soft2);display:grid;grid-template-columns:.7fr 1.3fr;gap:26px;align-items:center}.app-compare img{max-height:320px;margin:auto}.web-compare{padding-top:54px}.check-list{padding-left:20px}.staking-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.knowledge-panel,.risk-panel{padding:32px;border-radius:24px;border:1px solid var(--line)}.risk-panel{background:#fffaf2}.timeline{position:relative;margin-left:12px}.timeline:before{content:"";position:absolute;left:8px;top:10px;bottom:10px;width:1px;background:var(--line)}.timeline-item{position:relative;padding-left:42px;margin-bottom:28px}.timeline-dot{position:absolute;left:0;top:8px;width:17px;height:17px;border-radius:50%;border:4px solid #fff;background:var(--blue);box-shadow:0 0 0 1px var(--line)}.timeline-item h3{margin:5px 0;color:var(--ink)}.timeline-item p{margin:5px 0}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;border:0;background:#fff;min-height:66px;padding:18px 4px;text-align:left;display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:800;font-size:17px;cursor:pointer}.faq-question:after{content:"＋";font-size:20px}.faq-question[aria-expanded=true]:after{content:"−"}.faq-answer{padding:0 4px 20px;max-width:900px}.faq-answer[hidden]{display:none}.final-cta{padding:74px 0;background:var(--soft2)}.final-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}.final-cta h2{margin:0 0 10px;color:var(--ink);font-size:40px}.final-cta-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.page-hero{padding:72px 0 48px;background:linear-gradient(180deg,#f7fbff,#fff)}.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:20px}.breadcrumbs a{color:var(--muted)}.page-hero h1{font-size:clamp(38px,5vw,62px);margin:0 0 16px}.page-hero p{font-size:18px;max-width:800px}.overview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.overview-card{border:1px solid var(--line);border-radius:22px;padding:26px}.overview-card h3{color:var(--ink)}.feature-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}.feature-hero img{max-height:390px;margin:auto}.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:56px;align-items:start}.article-content h2{font-size:32px;color:var(--ink);margin-top:46px;scroll-margin-top:120px}.article-content h3{color:var(--ink);margin-top:26px}.article-content p{max-width:760px}.article-content ul,.article-content ol{max-width:760px}.article-toc{position:sticky;top:110px;border-left:1px solid var(--line);padding-left:20px}.article-toc h2{font-size:16px;margin-top:0}.article-toc a{display:block;padding:8px 0;color:var(--muted);font-size:14px}.article-toc a.current{color:var(--blue-dark);font-weight:800}.mobile-toc{display:none}.related-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.related-list a{border:1px solid var(--line);border-radius:14px;padding:14px;color:var(--ink);background:#fff}.article-illustration{float:right;width:min(42%,340px);margin:0 0 18px 30px;background:var(--soft);border-radius:24px;padding:20px}.support-steps{counter-reset:step}.support-steps li{list-style:none;counter-increment:step;padding:12px 0 12px 44px;position:relative}.support-steps li:before{content:counter(step);position:absolute;left:0;top:10px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--tag);color:var(--blue-dark);font-weight:800}.glossary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.term{border:1px solid var(--line);padding:18px;border-radius:16px}.term strong{color:var(--ink)}
.site-footer{background:var(--footer);color:#eaf4ff;padding-top:62px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:44px}.footer-grid h2{font-size:16px;color:#fff}.footer-grid a{display:block;color:#d9ebff;padding:6px 0}.footer-brand img{width:150px;max-height:44px;object-fit:contain;filter:brightness(0) invert(1)}.footer-risk{color:#bcd7f2;font-size:13px}.footer-bottom{margin-top:50px;border-top:1px solid rgba(255,255,255,.15);min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:#bdd7ef;font-size:13px}.footer-bottom a{color:#fff}
@media(max-width:1020px){.desktop-nav{display:none}.mobile-menu-button{display:flex}.header-inner{height:68px}.header-actions{margin-left:auto}.bento{grid-template-columns:1fr 1fr}.bento-main{grid-row:auto;grid-column:span 2}.bento-wide{grid-column:span 2}.flow{grid-template-columns:repeat(3,1fr);gap:30px 0}.flow:before{display:none}.editorial,.security-grid,.compare,.article-shell{grid-template-columns:1fr}.article-toc{display:none}.mobile-toc{display:block;margin:0 0 24px}.mobile-toc-toggle{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 14px;text-align:left;color:var(--ink);font-weight:800}.mobile-toc-panel{border:1px solid var(--line);border-top:0;border-radius:0 0 12px 12px;padding:10px 14px}.mobile-toc-panel[hidden]{display:none}.mobile-toc-panel a{display:block;padding:8px 0}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}.hero-grid{grid-template-columns:1fr 1.15fr}.hero-copy{padding-left:0}.mega-menu{top:101px}}
@media(max-width:760px){.wrap,.header-inner{width:min(calc(100% - 28px),var(--max))}.safety-strip{text-align:left;line-height:1.45;padding:8px 14px}.brand img{width:126px}.header-actions .download-btn{padding:9px 13px}.section{padding:68px 0}.section-head{display:block}.hero{padding:48px 0}.hero-grid{display:flex;flex-direction:column}.hero-copy{order:1}.hero-media{order:2;width:100%;padding:22px;border-radius:24px}.hero h1{font-size:42px}.hero-subtitle{font-size:17px}.quick-tasks{grid-template-columns:1fr}.task{border-right:0;border-bottom:1px solid var(--line)}.task:last-child{border-bottom:0}.bento{grid-template-columns:1fr}.bento-main,.bento-wide{grid-column:auto}.flow{grid-template-columns:1fr;gap:0}.flow-step{padding:0 0 28px 58px}.flow-no{position:absolute;left:0;top:0}.flow-step:after{content:"";position:absolute;left:25px;top:52px;bottom:4px;width:1px;background:var(--line)}.flow-step:last-child:after{display:none}.tab-panel{grid-template-columns:1fr;padding:24px}.security-grid,.security-visual,.editorial,.compare,.staking-grid,.feature-hero,.app-compare{grid-template-columns:1fr}.security-visual img{max-height:190px}.lead-story{padding:26px}.lead-story h3{font-size:28px}.app-compare{padding:24px}.final-cta-inner{display:block}.final-cta-actions{margin-top:24px}.final-cta h2{font-size:34px}.overview-grid,.related-list,.glossary-grid{grid-template-columns:1fr}.page-hero{padding:54px 0 34px}.article-content h2{font-size:28px}.article-illustration{float:none;width:100%;margin:0 0 18px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:last-child{grid-column:auto}.footer-brand{grid-column:1/3}.footer-bottom{align-items:flex-start;flex-direction:column;padding:22px 0}.mobile-menu-bottom{align-items:stretch;flex-direction:column}.mobile-menu-bottom .download-btn{width:100%}}
@media(max-width:430px){.header-actions .download-btn{font-size:13px;padding:9px 10px}.brand img{width:110px}.hero h1{font-size:36px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.header-inner{gap:8px}}