:root{--primary:rgb(70,139,223);--primary-50:#f2f8ff;--primary-100:#e5f1ff;--primary-200:#cbe0fa;--primary-500:#468bdf;--primary-600:#3075cb;--primary-700:#235fa9;--gradient:linear-gradient(130deg,#eef7ff,#f9fbff);--ink:#182c46;--muted:#63758a;--bg:#fff;--soft:#f7f9fc;--line:#e5edf4;--ok:#27815d;--amber:#9e6a1c;--radius-sm:10px;--radius-md:16px;--radius-lg:20px;--radius-xl:24px;--radius-pill:999px;--shadow-sm:0 5px 18px rgba(29,72,120,.055);--shadow-md:0 16px 42px rgba(32,76,130,.10);--shadow-lg:0 24px 60px rgba(42,94,145,.13);--container:1200px;--transition-fast:180ms ease;--transition-base:230ms ease;--font:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font:400 16px/1.8 var(--font);overflow-x:hidden}img{max-width:100%;height:auto}a{color:inherit;text-decoration:none}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid #86b7f7;outline-offset:4px}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{letter-spacing:-.035em;line-height:1.23;font-weight:560}h1{font-size:clamp(2.3rem,4.6vw,4rem)}h2{font-size:clamp(1.8rem,3vw,2.65rem)}h3{font-size:clamp(1.1rem,1.5vw,1.4rem)}p{color:var(--muted)}small{font-size:.77rem}.container{width:min(calc(100% - 48px),var(--container));margin-inline:auto}.section{padding-block:clamp(54px,7vw,104px)}.eyebrow{display:inline-block;color:var(--primary-700);font-size:.87rem;font-weight:550;letter-spacing:.07em;margin-bottom:20px}.lead{font-size:clamp(1.05rem,1.5vw,1.2rem);line-height:1.85;max-width:760px}.muted{color:var(--muted)}.section-heading{max-width:750px;margin-bottom:36px}.section-heading.centered{text-align:center;margin-inline:auto}.tinted{background:var(--soft)}.text-link{display:inline-flex;align-items:center;gap:18px;border-bottom:1px solid var(--primary-200);color:var(--primary-700);font-weight:550;padding-block:10px;transition:transform var(--transition-fast)}.text-link:hover{transform:translateX(4px)}
.navbar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);transition:box-shadow var(--transition-base),border-color var(--transition-base);border-bottom:1px solid transparent}.navbar.scrolled{border-color:var(--line);box-shadow:var(--shadow-sm)}.nav-row{height:82px;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:1.3rem;letter-spacing:-.035em;font-weight:600;white-space:nowrap}.brand img{width:38px;height:38px;object-fit:contain}.desktop-links{display:flex;align-items:center;gap:clamp(12px,1.6vw,23px);margin-left:auto}.desktop-links a{font-size:.88rem;font-weight:500;white-space:nowrap;color:#52657e;transition:color var(--transition-fast)}.desktop-links a:hover,.desktop-links a.active{color:var(--primary-700)}.lang-switch{font-size:.89rem;white-space:nowrap;color:#98a7b7}.lang-switch a{padding:5px;color:#758397}.lang-switch a.active{color:var(--primary-700);font-weight:600}.menu-toggle{display:none;width:45px;height:45px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}.menu-toggle span{display:block;width:21px;height:2px;background:var(--ink)}.drawer-backdrop{position:fixed;inset:0;background:rgba(18,40,65,.37);z-index:70}.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);z-index:75;background:#fff;transform:translateX(104%);visibility:hidden;transition:transform var(--transition-base),visibility var(--transition-base);display:flex;flex-direction:column;padding:24px;box-shadow:var(--shadow-lg)}.mobile-drawer.open{transform:translateX(0);visibility:visible}.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between}.drawer-close{background:var(--soft);border:0;width:44px;height:44px;border-radius:10px;cursor:pointer;font-size:1.6rem}.drawer-links{margin-top:24px}.drawer-links a{min-height:53px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);font-weight:500}.drawer-lang{margin-top:auto;border-top:1px solid var(--line);padding-top:20px}.download-jump{position:fixed;right:14px;top:41%;z-index:45;width:78px;height:78px;background:var(--primary);border-radius:11px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;font-size:13px;font-weight:560;line-height:1.25;text-align:center;box-shadow:0 10px 28px rgba(44,110,193,.24);transition:transform var(--transition-fast);word-break:normal}.download-jump:hover{transform:translateX(-4px)}.jump-arrow{font-size:26px;line-height:1.2}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:70px;min-width:238px;padding:16px 27px;background:var(--primary);color:#fff;border-radius:12px;font-weight:600;font-size:1.13rem;box-shadow:0 12px 32px rgba(53,123,208,.22);transition:background var(--transition-fast),transform var(--transition-fast)}.download-btn:hover{background:var(--primary-600);transform:translateY(-3px)}.download-cta{background:var(--gradient);text-align:center}.download-inner{max-width:770px}.download-inner h2{margin-bottom:17px}.download-inner p{margin:0 auto 27px;max-width:660px}#download{scroll-margin-top:130px}
.hero{padding-top:clamp(45px,5vw,75px)}.hero-grid{display:grid;grid-template-columns:5fr 7fr;align-items:center;gap:clamp(30px,5vw,78px)}.hero-copy h1{max-width:570px}.hero-tags{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}.hero-tags span{font-size:.83rem;color:#50708b;background:var(--soft);padding:9px 12px;border:1px solid var(--line);border-radius:9px}.hero-stage{min-height:520px;position:relative;display:flex;justify-content:center;align-items:center;isolation:isolate}.orb{position:absolute;border-radius:50%;filter:blur(12px);z-index:-1;background:#e7f3ff}.orb-one{width:380px;height:380px;left:7%;top:8%}.orb-two{width:210px;height:210px;background:#f3f8ff;right:4%;bottom:5%}.hero-app{max-height:480px;width:auto;object-fit:contain;filter:drop-shadow(0 20px 28px rgba(31,83,126,.14))}.float-status{position:absolute;background:#fff;padding:12px 16px;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-md);font-size:.83rem;font-weight:500}.fs-one{left:0;top:15%}.fs-two{right:0;top:34%}.fs-three{left:5%;bottom:16%}.principles-strip{border-block:1px solid var(--line);background:#fff}.strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}.strip-grid>div{padding:26px 22px;border-right:1px solid var(--line)}.strip-grid>div:first-child{padding-left:0}.strip-grid>div:last-child{border-right:0}.strip-grid span,.big-num{color:var(--primary);font-size:1.65rem;font-weight:500}.strip-grid p{margin:7px 0 0;font-size:.93rem;color:var(--ink)}.showcase-grid{display:grid;grid-template-columns:5fr 6fr;gap:9%;align-items:center}.art-figure{margin:0}.art-figure img{display:block;width:100%;height:auto;max-height:430px;object-fit:contain;border-radius:20px}.showcase-copy .art-figure{margin-top:24px;max-width:480px}.wallet-panel,.wallet-mini{padding:clamp(25px,4vw,44px);background:#fff;border:1px solid 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h3{font-size:1.1rem}.feature-icon-card p{font-size:.9rem;margin:0}.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,7vw,90px);align-items:center}.split.reverse .art-figure{order:-1}.split h2{max-width:630px}.architecture-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}.architecture-grid article{padding-top:17px;border-top:1px solid var(--primary-200)}.architecture-grid h3{margin:18px 0}.chapter-layout{display:grid;grid-template-columns:4fr 8fr;gap:8%}.chapter-list a{display:grid;grid-template-columns:52px 1fr 30px;align-items:center;padding:17px 2px;border-bottom:1px solid var(--line);transition:transform var(--transition-fast);font-weight:500}.chapter-list a:hover,.related-grid a:hover,.scenario:hover{transform:translateY(-3px)}.chapter-list a span:first-child{color:var(--primary)}.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.scenario{padding:27px;border:1px solid var(--line);border-radius:16px;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.scenario>span{font-size:1.4rem}.scenario h3{font-size:1.12rem;margin:14px 0}.scenario p{font-size:.86rem;line-height:1.75}.scenario small{color:var(--primary-700)}.risk-layout{display:grid;grid-template-columns:5fr 6fr;gap:8%}.risk-list a{display:flex;gap:15px;align-items:center;border-bottom:1px solid #dce6f3;padding:22px 0}.risk-list strong{flex:1;font-weight:500}.faq-preview{max-width:890px}.faq-page{max-width:930px}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;background:transparent;border:0;padding:23px 2px;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;cursor:pointer;color:var(--ink);font-weight:530;line-height:1.6}.faq-question span{font-size:1.45rem;color:var(--primary)}.faq-question[aria-expanded=true] span{transform:rotate(45deg)}.faq-answer{padding:0 22px 17px 0}.faq-answer p{margin:0}.site-footer{padding:65px 0 22px;background:#fbfcfe;border-top:1px 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.breadcrumb{padding-top:30px;font-size:.84rem;color:var(--muted)}.breadcrumb a{color:var(--primary-700)}.guide-hero{padding:clamp(46px,6vw,88px) 0 20px;display:grid;grid-template-columns:6fr 5fr;gap:6%;align-items:center}.guide-hero .art-figure img{max-height:350px}.guide-flow .guide-layout{display:grid;grid-template-columns:7fr 4fr;gap:7%}.step-row{display:grid;grid-template-columns:60px 1fr;gap:22px;padding:26px 0;border-top:1px solid var(--line)}.step-row>b{color:var(--primary);font-size:1.75rem;font-weight:520}.step-row h3{margin:0 0 10px}.step-row p{margin:0}.checklist{align-self:start;position:sticky;top:110px;background:var(--soft);border:1px solid var(--line);padding:30px;border-radius:18px}.checklist p,.inline-checks p{padding-bottom:10px;border-bottom:1px solid var(--line)}.notice{padding:19px 22px;color:#74531e;background:#fff8e8;border-left:3px solid #d8aa53;border-radius:10px;line-height:1.75}.wide-notice{max-width:1000px;margin:0 auto 38px}.principle-grid,.trouble-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.principle,.trouble-grid article{padding:30px;border-top:1px solid var(--primary-200);background:var(--soft);border-radius:14px}.principle .big-num,.trouble-grid .big-num{display:block;margin-bottom:22px}.feature-detail{grid-template-columns:6fr 5fr}.wallet-mini h3{font-size:1.7rem}.mini-line{padding:15px 0;border-bottom:1px solid var(--line)}.mini-line b{color:var(--ok)}.wallet-mini small{display:block;margin-top:24px;color:var(--muted)}.related{padding-top:30px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.related-grid a{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:23px;border:1px solid var(--line);border-radius:14px;transition:transform var(--transition-fast);font-size:.91rem}.related-grid a span{color:var(--primary)}.related-grid.compact{margin-top:36px}.standard-hero{padding-top:clamp(55px,7vw,110px);max-width:1000px}.standard-hero h1{max-width:850px}.about-hero,.download-guide{padding-top:10px}.journey-grid.four{grid-template-columns:repeat(4,1fr)}.journey-grid.four h3{font-size:1rem;line-height:1.6}
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@media(max-width:480px){.container{width:calc(100% - 36px)}.section{padding-block:clamp(48px,10vw,68px)}h1{font-size:clamp(2.15rem,9.3vw,2.5rem)}h2{font-size:clamp(1.65rem,7vw,2rem)}.hero-tags{gap:8px}.hero-tags span{font-size:.74rem;padding:7px 9px}.journey-grid,.scenario-grid,.feature-icon-grid,.principle-grid,.trouble-grid,.architecture-grid,.journey-grid.four{grid-template-columns:1fr}.journey-card,.feature-icon-card,.scenario{padding:22px}.wallet-panel{padding:21px}.wallet-metrics{display:block}.wallet-metrics span{display:block}.strip-grid p{font-size:.84rem}.strip-grid span{font-size:1.3rem}.faq-question{padding-right:0}.guide-hero{padding-top:45px}.step-row{grid-template-columns:45px 1fr;gap:14px}.step-row>b{font-size:1.4rem}.download-jump{top:58%;right:10px}.hero-stage .float-status{font-size:.7rem;padding:8px 10px}.footer-grid nav{gap:9px}.related-grid a{padding:17px}.brand{font-size:1.2rem}}
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