@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Manrope:wght@400;500;600;650;700;750;800&display=swap');
:root{--paper:#f8fafc;--white:#fff;--ink:#15243b;--muted:#53647b;--blue:#175cff;--light-blue:#e9f0ff;--line:#dce3ed;--font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--display:'Manrope',var(--font)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}::selection{background:#bdd1ff}.wrap{max-width:1220px;margin:0 auto;padding:0 40px}.skip-link{position:absolute;left:20px;top:-80px;background:var(--ink);color:white;padding:12px 20px;z-index:100}.skip-link:focus{top:12px}.site-header{height:104px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;font-family:var(--display);font-size:32px;font-weight:800;letter-spacing:-1.8px;line-height:1}.brand-sui{font-weight:500}.brand-period{color:var(--blue)}.brand-symbol{display:inline-flex;align-items:center;position:relative;justify-content:center;background:var(--blue);color:white;border-radius:11px;width:38px;height:38px;font-size:31px;margin-right:11px;line-height:1;padding-bottom:8px;letter-spacing:-4px;padding-right:9px}.brand-symbol>span{font-family:var(--font);font-size:23px;position:absolute;right:5px;top:3px;letter-spacing:0}.site-header nav{display:flex;gap:32px}.nav-link{font-size:14px;font-weight:550;color:#45566b;position:relative}.nav-link:hover{color:var(--blue)}.language-button{border:1px solid var(--line);background:transparent;border-radius:100px;padding:7px 14px;font-size:13px;letter-spacing:.05em;white-space:nowrap}.language-button span{color:#b3bfce;margin:0 4px}.hero{padding-top:42px;padding-bottom:65px;display:grid;grid-template-columns:1.1fr 1fr;gap:66px;align-items:center}.eyebrow{font-size:12px;letter-spacing:.13em;font-weight:700;margin:0 0 19px;color:var(--muted);line-height:1.6}.tiny-spark{color:var(--blue);font-size:19px;vertical-align:-1px;margin-right:5px}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:var(--display);line-height:1.15}h1{font-size:clamp(52px,5.6vw,76px);letter-spacing:-4.8px;line-height:1.08;font-weight:650;margin-bottom:24px}h1 span{color:var(--blue)}.hero-description{font-size:18px;max-width:385px;line-height:1.7;color:var(--muted);margin-bottom:29px}.hero-actions{display:flex;align-items:center;gap:21px}.button{display:inline-flex;align-items:center;justify-content:center;gap:28px;min-height:50px;border:1px solid transparent;border-radius:8px;padding:12px 20px;font-weight:550;font-size:14px;transition:background .2s,transform .2s}.button:hover{transform:translateY(-2px)}.button-dark{background:var(--ink);color:white}.button-dark:hover{background:#2b405f}.button-blue{background:var(--blue);color:white}.button-blue:hover{background:#0e48d4}.button-ghost{border:1px solid var(--line);background:var(--white);color:var(--ink)}.button-ghost:hover{background:var(--paper)}.hero-note{font-size:12px;color:var(--muted);line-height:1.6}.feature-card{display:block;border:1px solid #dce5f1;border-radius:15px;overflow:hidden;background:#fff;box-shadow:0 8px 35px -25px #2e5688;transition:transform .3s,box-shadow .3s}.feature-card:hover{transform:translateY(-4px);box-shadow:0 15px 35px -23px #2e5688}.feature-art{height:292px;position:relative;background:#dfeaff;overflow:hidden}.feature-art img{width:100%;height:100%;object-fit:cover;object-position:50% 48%;display:block}.feature-label{position:absolute;left:21px;top:19px;color:#36557f;font-size:12px;letter-spacing:.15em;font-weight:700}.art-caption{position:absolute;bottom:15px;left:21px;font-size:12px;color:#36557f}.feature-bottom{padding:22px;display:flex;align-items:center;justify-content:space-between;gap:12px}.micro-label{font-size:12px;font-weight:700;letter-spacing:.11em;color:var(--muted)}.feature-bottom h2{font-size:20px;font-weight:600;letter-spacing:-.6px;margin:8px 0 0}.circle-arrow{height:43px;width:43px;display:inline-flex;flex-shrink:0;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:50%;font-size:23px;line-height:1;background:white;color:var(--ink);transition:background .2s,color .2s}.feature-card:hover .circle-arrow,.next-note>a:hover{background:var(--blue);color:white;border-color:var(--blue)}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:27px}.section-heading .eyebrow{margin-bottom:12px}.section-heading h2{font-size:35px;letter-spacing:-1.6px;font-weight:600;margin-bottom:0}.section-aside{font-size:14px;color:var(--muted);margin-bottom:3px}.journey-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.journey-card{text-align:left;background:white;border:1px solid var(--line);border-radius:12px;padding:26px;display:flex;flex-direction:column;transition:transform .25s,border-color .25s,box-shadow .25s;position:relative;overflow:hidden}.journey-card:hover{transform:translateY(-4px);border-color:#a7bff6;box-shadow:0 8px 25px -18px #6688bc}.journey-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}.journey-icon{width:46px;height:46px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;color:var(--blue);background:var(--light-blue)}.journey-icon svg{width:23px;height:23px;stroke-width:1.6}.journey-card:nth-child(2) .journey-icon{background:#e8f7f4;color:#237662}.journey-card:nth-child(3) .journey-icon{background:#f0ecff;color:#7551c8}.journey-number{font-size:13px;color:var(--muted);font-family:var(--display)}.journey-card h3{font-size:23px;font-weight:600;letter-spacing:-.8px;margin-bottom:12px}.journey-card>p{font-size:15px;line-height:1.65;color:var(--muted);margin-bottom:25px;max-width:290px}.journey-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:20px;border-top:1px solid #e9edf3;font-size:12px;color:var(--muted)}.journey-footer span:last-child{color:var(--ink);font-size:20px}.source-note{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--muted);margin:22px 0 61px;flex-wrap:wrap}.source-note .text-button{margin-left:auto;font-size:12px}.source-icon{font-size:19px;line-height:1}.text-button{border:0;background:none;padding:2px 0;font-size:14px;text-decoration:underline;text-underline-offset:4px;text-decoration-color:#b4bfcd}.text-button:hover{color:var(--blue)}.practice-section{background:#eaf1fc;border-top:1px solid #dfe7f3;border-bottom:1px solid #dfe7f3;padding:62px 0}.practice-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px;align-items:center}.practice-intro h2,.questions-intro h2{font-size:42px;letter-spacing:-1.9px;line-height:1.2;font-weight:600;margin-bottom:24px}.practice-intro>p:not(.eyebrow){color:var(--muted);font-size:16px;max-width:340px;line-height:1.75}.practice-disclosure{display:flex;gap:12px;align-items:start;margin-top:29px;max-width:365px}.practice-icon{font-size:25px;color:#637da5;line-height:1.2}.practice-disclosure strong{font-size:13px;font-weight:600}.practice-disclosure p{font-size:12px;line-height:1.7;color:var(--muted);margin:5px 0 0}.playground{background:white;border:1px solid #d7e1ee;box-shadow:0 15px 40px -35px #496287;border-radius:14px;overflow:hidden;min-width:0}.playground-top{display:flex;align-items:center;justify-content:space-between;padding:19px 24px;gap:10px;border-bottom:1px solid #e9edf3}.simulation-badge{font-size:12px;line-height:1.3;padding:5px 9px;border-radius:5px;background:#f0f4fa;color:#526881}.practice-steps{display:flex;padding:20px 24px 0;gap:22px;justify-content:space-between}.practice-steps>span{color:var(--muted);font-size:12px;display:flex;align-items:center;gap:7px;line-height:1.3}.practice-steps>span.active{color:var(--blue);font-weight:600}.practice-steps>span.done{color:#2c7768}.practice-steps>span>span{font-size:12px}.practice-body{padding:26px 24px 22px;text-align:center;min-height:322px;display:flex;flex-direction:column;align-items:center;justify-content:center}.object-token{background:#eaf1ff;color:var(--blue);width:82px;height:82px;border:1px solid #cfddff;border-radius:23px;display:flex;align-items:center;justify-content:center;font-size:42px;margin-bottom:17px;font-family:var(--display);font-weight:500}.object-token.received{animation:arrive .45s ease}.practice-body h3{font-size:22px;font-weight:600;letter-spacing:-.7px;margin-bottom:10px}.practice-body p{font-size:14px;color:var(--muted);line-height:1.65;max-width:350px;margin:0 0 20px}.practice-body .button{min-height:45px;font-size:13px;padding:10px 20px}.object-details{display:flex;gap:25px;justify-content:center;margin:0 0 20px;font-size:12px;color:var(--muted)}.object-details strong{display:block;color:var(--ink);font-size:14px;font-weight:500}.transfer-preview{background:var(--paper);border:1px solid var(--line);width:100%;border-radius:8px;padding:14px 18px;margin-bottom:18px;text-align:left}.transfer-preview div{display:flex;justify-content:space-between;gap:15px;font-size:13px;padding:4px 0}.transfer-preview div span{color:var(--muted)}.transfer-preview strong{font-weight:500}.practice-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}.playground-bottom{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:15px 24px;border-top:1px solid #e9edf3;font-size:12px;color:var(--muted)}.playground-bottom .text-button{font-size:12px;white-space:nowrap}.questions-section{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px;padding-top:74px;padding-bottom:63px}.questions-intro>p:not(.eyebrow){font-size:15px;color:var(--muted);margin-bottom:23px}.inline-link{display:inline-flex;align-items:center;gap:15px;color:var(--blue);font-size:14px;font-weight:500}.inline-link:hover{text-decoration:underline;text-underline-offset:4px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}.faq-list summary{list-style:none;cursor:pointer;font-size:16px;font-weight:500;padding:21px 32px 21px 0;position:relative;line-height:1.5}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:'+';position:absolute;right:2px;top:18px;font-size:23px;color:var(--muted);font-weight:400}.faq-list details[open] summary:after{content:'−'}.faq-list details p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 25px 21px 0}.faq-list a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.next-note{display:flex;align-items:center;gap:25px;border-top:1px solid var(--line);padding-top:32px;padding-bottom:32px}.note-mark{font-size:52px;color:var(--blue);line-height:1}.next-note p{font-size:17px;color:var(--muted);margin:0;line-height:1.55}.next-note strong{font-weight:500;color:var(--ink)}.next-note .circle-arrow{margin-left:auto}.site-footer{display:flex;justify-content:space-between;gap:30px;align-items:center;border-top:1px solid var(--line);padding-top:29px;padding-bottom:32px}.footer-brand{font-size:24px;letter-spacing:-1.2px}.site-footer p{font-size:12px;color:var(--muted);margin:11px 0 0;max-width:430px}.footer-links{display:flex;align-items:center;gap:25px;flex-wrap:wrap}.footer-links a,.footer-links button{font-size:12px;color:var(--muted)}.footer-links a:hover{color:var(--blue)}
dialog{color:var(--ink);font:inherit;padding:0;border:1px solid var(--line);box-shadow:0 30px 100px #14213d30;background:white}dialog::backdrop{background:#10274480;backdrop-filter:blur(5px)}.guide-dialog{width:min(940px,calc(100% - 40px));max-height:calc(100dvh - 60px);border-radius:16px;overflow:auto}.dialog-heading{padding:30px 32px 25px;border-bottom:1px solid var(--line);position:relative}.dialog-heading .eyebrow{margin-bottom:8px}.dialog-heading h2{font-size:30px;font-weight:600;letter-spacing:-1px;margin:0 45px 12px 0}.dialog-heading p:last-child{font-size:14px;color:var(--muted);margin:0;max-width:690px}.dialog-close{position:absolute;right:20px;top:20px;border:1px solid var(--line);width:36px;height:36px;border-radius:50%;background:white;display:flex;justify-content:center;align-items:center;font-size:23px;line-height:1}.dialog-close:hover{background:var(--paper)}.guide-layout{display:grid;grid-template-columns:270px 1fr}.guide-sidebar{padding:26px 21px;background:#f6f8fc;border-right:1px solid var(--line)}.guide-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}.guide-meta span{font-size:12px;border:1px solid var(--line);border-radius:5px;background:white;padding:4px 8px}.guide-step-nav{display:flex;flex-direction:column;gap:6px}.step-nav-button{padding:11px 12px;display:flex;text-align:left;align-items:center;gap:10px;border:1px solid transparent;border-radius:7px;background:none;font-size:13px;line-height:1.45}.step-nav-button:hover{background:#eaf0fa}.step-nav-button.active{background:#e4edff;border-color:#d2e0ff;color:var(--blue)}.step-number{width:22px;height:22px;flex-shrink:0;border-radius:50%;border:1px solid #c2cee0;display:inline-flex;justify-content:center;align-items:center;font-size:12px}.step-nav-button.complete .step-number{border-color:#b0d7c9;color:#27795f;background:#e6f5ef}.guide-progress-note{font-size:12px;color:var(--muted);margin:22px 10px 0;line-height:1.7}.guide-main{padding:32px;min-width:0}.guide-main h3{font-size:25px;letter-spacing:-.7px;font-weight:600;margin-bottom:18px}.guide-main>p,.guide-main li{font-size:15px;line-height:1.8;color:#40546d}.guide-main ul,.guide-main ol{padding-left:20px}.guide-main li{margin-bottom:10px}.guide-callout{background:#edf3ff;border:1px solid #dce7fe;border-radius:8px;padding:15px 17px;margin:22px 0;font-size:13px;line-height:1.7;color:#3c5579}.guide-callout strong{display:block;font-weight:600;color:#294769;margin-bottom:4px}.guide-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:26px}.guide-actions .button{font-size:13px;min-height:45px;gap:16px}.guide-actions .text-button{font-size:12px}.guide-source{border-top:1px solid var(--line);padding-top:20px;margin-top:30px;font-size:12px;color:var(--muted);line-height:1.8}.guide-source a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.guide-complete{padding:26px 0}.guide-complete .object-token{margin:0 0 20px;font-size:35px}.info-dialog{width:min(570px,calc(100% - 40px));max-height:calc(100dvh - 60px);padding:34px;border-radius:14px}.info-dialog h2{font-size:27px;letter-spacing:-.8px;font-weight:600;padding-right:35px;margin-bottom:25px}.info-dialog h3{font-size:17px;margin:25px 0 8px}.info-dialog p{font-size:14px;line-height:1.8;color:var(--muted)}.info-dialog a{color:var(--blue);text-decoration:underline}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);padding:12px 20px;background:var(--ink);color:white;border-radius:8px;box-shadow:0 10px 30px #15243b25;font-size:13px;opacity:0;visibility:hidden;transition:.2s;z-index:100;max-width:calc(100vw - 40px)}.toast.visible{opacity:1;visibility:visible;transform:translate(-50%,0)}body.modal-open{overflow:hidden}.address-tool{border:1px solid var(--line);border-radius:8px;padding:17px;margin:22px 0;background:var(--paper)}.address-tool label{display:block;font-size:13px;font-weight:500;margin-bottom:7px}.address-tool input{width:100%;border:1px solid #b9c8dc;border-radius:6px;padding:10px 12px;font-size:13px;background:white;min-height:43px;color:var(--ink)}.address-result{font-size:12px;line-height:1.7;margin-top:9px;overflow-wrap:anywhere;color:var(--muted)}.address-result.error{color:#b03535}.address-result.success{color:#23705c}.address-result a{display:inline-block;color:var(--blue);text-decoration:underline;margin-top:6px}html[lang=zh] h1{font-size:60px;letter-spacing:-2px;line-height:1.25}html[lang=zh] .hero-description{line-height:1.9}html[lang=zh] .eyebrow{letter-spacing:.12em}
@keyframes arrive{from{transform:translateY(10px) scale(.85);opacity:.4}to{transform:translateY(0) scale(1);opacity:1}}@media(min-width:1440px){.hero{padding-top:55px;padding-bottom:75px}}@media(max-width:1000px){.wrap{padding-left:28px;padding-right:28px}.hero{gap:35px}.hero h1{font-size:60px;letter-spacing:-3.5px}.hero-description{font-size:17px}.feature-art{height:260px}.practice-layout,.questions-section{gap:45px}.journey-card{padding:22px}.journey-card h3{font-size:21px}.hero-note{display:none}.guide-layout{grid-template-columns:235px 1fr}.guide-main{padding:25px}.guide-sidebar{padding:22px 15px}.practice-intro h2,.questions-intro h2{font-size:37px}.footer-links{gap:17px}}
@media(max-width:760px){.site-header{height:82px}.site-header nav{gap:22px}.nav-link{font-size:13px}.site-header nav .nav-link:last-child{display:none}.hero{grid-template-columns:1fr;gap:35px;padding-top:32px;padding-bottom:45px}.hero h1{font-size:64px;line-height:1.06;margin-bottom:20px}.hero-description{max-width:470px;font-size:17px}.hero-copy .eyebrow{font-size:12px}.hero h1 br{display:none}.hero-actions{gap:20px}.hero-note{display:block}.feature-art{height:250px}.feature-art img{object-position:center 52%}.feature-bottom{padding:19px 22px}.journey-grid{grid-template-columns:1fr;gap:13px}.journey-card{padding:23px;display:grid;grid-template-columns:1fr auto;column-gap:18px}.journey-top{margin-bottom:17px;grid-column:1/-1}.journey-icon{width:40px;height:40px;border-radius:10px}.journey-number{font-size:12px}.journey-card h3{font-size:24px;grid-column:1/-1;margin-bottom:8px}.journey-card>p{margin:0 0 18px;max-width:none;grid-column:1/-1;font-size:15px}.journey-footer{grid-column:1/-1;width:100%;padding-top:13px}.section-heading{display:block;margin-bottom:22px}.section-aside{display:none}.section-heading h2{font-size:31px}.source-note{margin:20px 0 40px;font-size:12px}.source-note .text-button{margin-left:25px}.practice-section{padding:42px 0}.practice-layout,.questions-section{grid-template-columns:1fr;gap:28px}.practice-intro h2,.questions-intro h2{font-size:35px;margin-bottom:18px}.practice-intro h2 br,.questions-intro h2 br{display:none}.practice-intro>p:not(.eyebrow){max-width:none}.practice-disclosure{max-width:100%;margin-top:20px}.practice-disclosure p{font-size:12px}.practice-body{min-height:323px}.questions-section{padding-top:45px;padding-bottom:40px;gap:30px}.questions-intro>p:not(.eyebrow){margin-bottom:15px}.questions-intro .eyebrow{margin-bottom:13px}.site-footer{align-items:start;flex-direction:column;gap:20px}.site-footer p{max-width:100%;font-size:12px}.footer-links{gap:25px}.next-note{gap:20px}.next-note p{font-size:15px}.note-mark{font-size:40px}.guide-dialog{width:calc(100% - 20px);max-height:calc(100dvh - 24px)}.dialog-heading{padding:26px 22px 22px}.dialog-heading h2{font-size:26px}.guide-layout{grid-template-columns:1fr}.guide-sidebar{border-right:0;border-bottom:1px solid var(--line);padding:16px 20px}.guide-step-nav{flex-direction:row;gap:6px;overflow:auto;padding:1px 1px 4px}.step-nav-button{white-space:nowrap;padding:8px 10px;font-size:12px}.step-nav-button:not(.active) .step-nav-label{display:none}.guide-meta{margin-bottom:13px}.guide-progress-note{margin:9px 0 0;font-size:12px}.guide-main{padding:24px 22px}.guide-main h3{font-size:23px}.dialog-close{right:16px;top:18px}.guide-source{font-size:12px}html[lang=zh] h1{font-size:48px;line-height:1.3}html[lang=zh] .hero h1 br{display:block}}
@media(max-width:400px){.wrap{padding-left:21px;padding-right:21px}.site-header nav{gap:15px}.site-header nav .nav-link:nth-child(2){display:none}.hero h1{font-size:55px}.feature-art{height:225px}.feature-bottom h2{font-size:19px}.feature-bottom{padding:19px}.practice-steps{gap:8px;padding:18px 18px 0}.practice-steps>span,.practice-steps>span>span{font-size:12px}.playground-top,.playground-bottom{padding:15px 18px}.playground-bottom{gap:8px}.playground-bottom>span{max-width:160px;font-size:12px}.practice-body{padding:24px 18px}.next-note p{font-size:14px}.info-dialog{padding:28px 23px}.language-button{font-size:12px;padding:7px 10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}