:root{--bg:#f6f8fb;--surface:#fff;--soft:#e9eff6;--ink:#132536;--muted:#506579;--accent:#126ab5;--accent-soft:#dcecff;--on-accent:#fff;--line:#bfd0e1;--dark:#112335;--dark-ink:#f2f7fc;--dark-muted:#b6cce0;--dark-line:#49657c;--inactive:#597084;--danger:#9b3845;--focus:#126ab5;--radius:16px;color-scheme:light;scroll-behavior:smooth;scroll-padding-top:24px}
:root[data-theme=dark]{--bg:#0e1720;--surface:#172634;--soft:#1d3142;--ink:#edf4fb;--muted:#adc2d5;--accent:#73bdff;--accent-soft:#203f5c;--on-accent:#0a243b;--line:#46627b;--focus:#a3d6ff;--danger:#ff9ba6;color-scheme:dark}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0e1720;--surface:#172634;--soft:#1d3142;--ink:#edf4fb;--muted:#adc2d5;--accent:#73bdff;--accent-soft:#203f5c;--on-accent:#0a243b;--line:#46627b;--focus:#a3d6ff;--danger:#ff9ba6;color-scheme:dark}}
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0}.action{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:54px;background:var(--accent);color:var(--on-accent);text-decoration:none;padding:12px 22px;border-radius:10px;font-size:16px;font-weight:650}.action .icon{width:23px;height:23px}.action:hover{filter:brightness(1.08)}.alpha-note{margin-top:25px;max-width:380px;color:var(--muted);font-size:15px}.hero-network{min-width:0;background:var(--dark);border-radius:var(--radius);color:var(--dark-ink);overflow:hidden}.hero-lines{display:block;width:100%;height:auto;padding:20px 14px 0}.hero-links{fill:none;stroke:var(--dark-line);stroke-width:2.5;stroke-dasharray:6 8}.hero-links path:first-child{stroke:#71bcff;stroke-width:3;stroke-dasharray:none}.hero-node circle{fill:#166db7}.hero-node use,.hero-envelope use{fill:none;stroke:var(--dark-ink);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.hero-node text{fill:var(--dark-muted);font-size:21px;text-anchor:middle;stroke:none}.hero-node.relay circle{fill:#284559}.hero-envelope circle{fill:#b9ddff}.hero-envelope use{stroke:#183f61}.hero-diagram-caption{display:flex;justify-content:space-between;gap:18px;font-size:14px;padding:22px 26px;color:var(--dark-muted)}.hero-diagram-caption span:first-child{color:var(--dark-ink)}.section-heading{display:grid;grid-template-columns:1fr .8fr;align-items:end;gap:70px;margin-bottom:40px}.section-heading p{color:var(--muted);max-width:510px}.network-section{padding:38px 0 0}.routing-demo{background:var(--surface);border-radius:var(--radius);overflow:hidden;padding:24px}.scenario-controls{display:flex;flex-wrap:wrap;gap:8px}.scenario-controls button{min-height:46px;border:0;border-radius:9px;font-size:15px;font-weight:550;background:var(--soft);padding:10px 17px;color:var(--ink);transition:background .18s,color .18s}.scenario-controls button[aria-pressed=true]{background:var(--accent);color:var(--on-accent)}.scenario-controls 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p{font-size:15px;color:var(--muted)}.encrypted-middle{text-align:center;position:relative}.cipher-packet{background:var(--accent-soft);border-radius:12px;padding:18px;display:flex;align-items:center;justify-content:center;gap:12px;color:var(--ink);font-size:16px}.cipher-packet .icon{color:var(--accent)}.carrier-tags{display:flex;justify-content:center;gap:6px;flex-wrap:wrap;margin:18px 0;font-size:13px}.carrier-tags span{background:var(--soft);padding:5px 10px;border-radius:6px}.encrypted-middle>p{font-size:14px;color:var(--muted)}.privacy-note{max-width:800px;margin:24px auto 0;text-align:center;color:var(--muted);font-size:14px}.message-rules{display:grid;grid-template-columns:1fr 1fr;gap:80px;margin-top:70px}.message-rules h3{font-size:25px;margin-bottom:26px}.message-rules p{color:var(--muted);font-size:16px}.dedup-diagram{display:flex;gap:0;align-items:center;min-height:100px;margin-bottom:24px;font-size:14px}.dedup-diagram>div{display:flex;flex-direction:column;gap:10px;min-width:150px}.dedup-diagram>div>span{padding:10px 12px;border-radius:8px;background:var(--soft)}.dedup-lines{width:70px;max-width:15%;height:80px;flex-shrink:0;fill:none;stroke:var(--accent);stroke-width:2}.one-message{display:flex;align-items:center;gap:8px;background:var(--accent-soft);padding:14px 16px;border-radius:10px;white-space:nowrap}.one-message .icon{width:25px}.receipt-states{display:flex;gap:8px;list-style:none;margin:0 0 24px;padding:24px 0;min-height:100px;align-items:center}.receipt-states li{font-size:13px;line-height:1.35;position:relative;padding:10px;background:var(--soft);border-radius:8px;flex:1}.receipt-states li:nth-child(3){background:var(--accent-soft)}.receipt-states li:not(:last-child):after{content:"";width:5px;height:5px;border-top:1.5px solid var(--muted);border-right:1.5px solid var(--muted);transform:rotate(45deg);position:absolute;right:-6px;top:50%}.alpha-section{display:grid;grid-template-columns:1fr 1.1fr;gap:100px;padding:120px 0}.alpha-intro>p{margin:28px 0;color:var(--muted);max-width:490px}.service-status{display:flex;align-items:center;gap:16px;margin-top:34px}.service-status>i{width:12px;height:12px;background:var(--line);border-radius:50%;flex-shrink:0}.service-status[data-state=up]>i{background:var(--accent)}.service-status p{font-size:15px;color:var(--muted)}.service-status strong{font-size:16px}.readiness{display:flex;flex-direction:column;gap:32px}.readiness article:first-child{background:var(--accent-soft);padding:28px;border-radius:var(--radius)}.readiness article:nth-child(2){padding:0 28px}.readiness h3{font-size:24px}.readiness ul{padding-left:21px;margin:18px 0}.readiness li{font-size:16px;padding:4px 0}.readiness p{font-size:14px;color:var(--muted);margin-top:20px}.faq{display:grid;align-items:start;grid-template-columns:.85fr 1.15fr;gap:80px;padding:20px 0 100px}.faq h2{font-size:42px;max-width:370px}.faq-items details{background:var(--surface);padding:0 24px;border-radius:12px;margin-bottom:12px}.faq-items summary{padding:19px 0;cursor:pointer;font-size:16px;font-weight:580;line-height:1.5;min-height:62px;list-style-position:outside;margin-left:18px}.faq-items summary:hover{color:var(--accent)}.faq-items details[open]{background:var(--soft)}.faq-items details p{padding:0 0 24px;font-size:15px;color:var(--muted);margin-left:18px}.footer{padding:40px 0 50px;display:flex;gap:60px;align-items:center}.footer .brand{font-size:26px}.footer p{font-size:15px;color:var(--muted);line-height:1.5}.footer>div{display:flex;gap:32px;margin-left:auto;font-size:14px}.footer a{text-decoration:none}.footer a:hover{text-decoration:underline}@keyframes route-packet{to{stroke-dashoffset:-1051}}
@media(min-width:1500px){.hero{gap:70px;padding-top:80px}.hero h1{font-size:88px}}
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@media(max-width:800px){.hero{grid-template-columns:1fr;padding:42px 0 70px;gap:36px}.hero-copy{max-width:640px}.hero h1{font-size:76px}.hero .lead{max-width:600px;font-size:19px;margin:24px 0}.alpha-note{max-width:none}.hero-network{max-width:680px}.hero-lines{max-height:440px}.hero-diagram-caption{display:flex}.header{height:90px;gap:18px}.header nav{gap:20px;font-size:14px}.section-heading{grid-template-columns:1fr;gap:24px}.section-heading p{max-width:620px}.routing-content{grid-template-columns:1fr}.network-map{height:340px;margin-top:24px}.map-node{width:140px;font-size:15px;transform:translate(-50%,-31px)}.node-symbol{width:62px;height:62px}.scenario-explanation{padding:0 8px 24px}.scenario-explanation h3{font-size:28px}.route-legend>span:last-child{margin-left:0;width:100%}.decentralization{grid-template-columns:1fr;gap:36px;padding:80px 0}.decentral-copy>p{max-width:680px}.federation-figure{max-width:680px}.nearby-path{grid-template-columns:1fr}.nearby-end{flex-direction:row;justify-content:center;gap:14px}.nearby-end>.icon{width:32px;height:32px}.nearby-end strong br{display:none}.nearby-options{max-width:100%;gap:10px}.nearby-options:before,.nearby-options:after{width:2px;height:20px;left:50%;right:auto}.nearby-options:before{top:-20px}.nearby-options:after{top:100%}.nearby-options>div{display:flex;gap:20px;padding:18px}.nearby-options strong{max-width:180px;margin:0}.nearby-options span{max-width:260px}.courier-intro{grid-template-columns:1fr;gap:18px}.courier-intro h3{max-width:none}.courier-journey{grid-template-columns:1fr 1fr;gap:24px 36px}.courier-journey li:nth-child(2):before,.courier-journey li:nth-child(2):after{display:none}.courier-journey h4{min-height:0;max-width:none}.courier-footnote{grid-template-columns:1fr;gap:14px}.courier-footnote strong{max-width:none}.privacy-section{padding-top:80px}.encryption-flow{gap:20px;padding:32px 24px}.encryption-end h3{font-size:18px}.cipher-packet{padding:14px;display:flex;flex-direction:column;gap:8px;font-size:15px}.carrier-tags{font-size:12px}.encryption-end p{font-size:14px}.message-rules{grid-template-columns:1fr;gap:48px;margin-top:50px}.dedup-diagram{max-width:500px}.receipt-states{max-width:560px;min-height:80px;padding:10px 0}.receipt-states li{font-size:14px;padding:14px}.alpha-section{grid-template-columns:1fr;padding:80px 0;gap:35px}.alpha-intro>p{max-width:680px}.readiness{gap:28px}.faq{grid-template-columns:1fr;gap:32px;padding-bottom:60px}.faq h2{max-width:650px;font-size:36px}.footer{gap:28px;flex-wrap:wrap}.footer>div{gap:22px}}
@media(max-width:520px){body{font-size:16px}.shell{padding:0 20px}.header{height:82px;gap:10px}.brand{font-size:27px;gap:10px}.brand img{width:35px;height:35px}.header nav{gap:14px;margin-left:auto;font-size:13px}.header nav a:first-child{display:none}.theme-button{width:42px;height:42px;flex-shrink:0}.hero{padding:30px 0 60px;gap:32px}.hero h1{font-size:56px;letter-spacing:-.04em}.hero .lead{font-size:18px;line-height:1.6;margin-top:24px}.action{font-size:15px;padding:12px 18px;gap:16px}.alpha-note{font-size:14px;max-width:330px}.hero-lines{padding:15px 6px 0}.hero-node text{font-size:24px}.hero-diagram-caption{font-size:13px;padding:16px 18px;display:block}.hero-diagram-caption span+span{display:block;color:var(--dark-muted);margin-top:3px}.network-section{padding-top:0}.section-heading{gap:20px;margin-bottom:28px}.section-heading h2,h2{font-size:32px;letter-spacing:-.03em}.section-heading p{font-size:16px}.routing-demo{padding:16px}.scenario-controls{display:grid;grid-template-columns:1fr 1fr;gap:8px}.scenario-controls button{font-size:13px;padding:10px 8px;min-height:48px;line-height:1.4}.network-map{display:none}.routing-content{gap:0}.scenario-explanation{padding:30px 0 24px}.model-label{font-size:13px;margin-bottom:14px}.scenario-explanation h3{font-size:25px;max-width:280px;margin-bottom:16px}.scenario-explanation .scenario-detail{font-size:14px}.mobile-route{display:flex;flex-direction:column;list-style:none;padding:0;margin:24px 0;gap:20px}.mobile-route li{background:var(--accent-soft);border-radius:8px;padding:12px 16px;text-align:center;font-size:15px;position:relative}.mobile-route li:not(:last-child):after{content:"";width:9px;height:9px;border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);position:absolute;left:calc(50% - 5px);bottom:-14px;transform:rotate(45deg)}.route-legend{font-size:13px;gap:10px}.route-legend>span:not(:last-child){display:none}.decentralization{padding:60px 0}.decentral-copy h2{margin-bottom:22px}.decentral-copy>p{font-size:16px}.federation-level{gap:7px}.federation-level span{padding:16px 7px;font-size:12px;overflow-wrap:anywhere;border-radius:10px;gap:10px}.federation-level .icon{width:26px;height:26px}.federation-bridge{font-size:13px;padding:22px 4px;gap:12px}.federation-bridge .icon{width:21px}.federation-figure>p{font-size:13px}.shutdown-section{padding:32px 22px;border-radius:12px}.shutdown-section .section-heading{gap:20px}.nearby-path{margin-top:32px;gap:24px}.nearby-end{font-size:15px}.nearby-options>div{display:block;padding:18px}.nearby-options strong{font-size:16px;max-width:none;margin-bottom:6px}.nearby-options span{font-size:14px;max-width:none}.shutdown-limit{font-size:14px;text-align:left;margin-top:28px}.courier-section{margin-top:48px}.courier-intro h3{font-size:27px}.courier-intro p{font-size:16px}.courier-journey{grid-template-columns:1fr;gap:26px;margin-top:26px}.courier-journey li{padding-left:62px}.journey-art{position:absolute;left:0;top:0;height:42px}.journey-art>.icon{width:34px;height:34px}.courier-journey li:not(:last-child):before{display:block;left:16px;top:52px;bottom:-17px;height:auto;width:2px;right:auto}.courier-journey li:not(:last-child):after{display:block;left:13px;top:auto;bottom:-18px;right:auto;width:8px;height:8px;transform:rotate(135deg)}.courier-journey h4{font-size:18px;margin-bottom:7px}.courier-journey p{font-size:14px}.courier-footnote{padding:20px;margin-top:34px}.courier-footnote strong{font-size:17px}.privacy-section{padding-top:60px}.encryption-flow{grid-template-columns:1fr;gap:30px;padding:30px 24px}.encryption-end{gap:10px}.encryption-end>.icon{width:34px;height:34px}.encryption-end h3{font-size:21px}.encryption-end p br{display:none}.encryption-end p{font-size:15px}.encrypted-middle{padding:12px 0}.encrypted-middle:before,.encrypted-middle:after{content:"";position:absolute;left:calc(50% - 5px);width:9px;height:9px;border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(45deg)}.encrypted-middle:before{top:-15px}.encrypted-middle:after{bottom:-15px}.cipher-packet{flex-direction:row;gap:10px;font-size:14px;padding:14px}.cipher-packet .icon{width:24px}.carrier-tags{font-size:12px;margin:14px 0}.carrier-tags span{padding:4px 7px}.privacy-note{text-align:left;font-size:14px;margin-top:20px}.message-rules{margin-top:44px;gap:40px}.message-rules h3{font-size:23px;max-width:340px;margin-bottom:20px}.message-rules p{font-size:15px}.dedup-diagram{margin-bottom:18px;font-size:12px;min-height:90px}.dedup-diagram>div{min-width:0;flex:1;gap:10px}.dedup-diagram>div>span{padding:9px}.dedup-lines{width:42px;max-width:15%}.one-message{font-size:12px;gap:7px;padding:12px 9px}.one-message .icon{width:23px}.receipt-states{flex-wrap:wrap;gap:10px;margin-bottom:12px;padding:5px 0}.receipt-states li{flex:1 1 40%;font-size:13px;min-height:44px;display:flex;align-items:center;justify-content:center;text-align:center;padding:10px 8px}.receipt-states li:after{display:none}.alpha-section{padding:60px 0;gap:28px}.alpha-intro>p{font-size:16px;margin:24px 0}.service-status{margin-top:24px}.readiness article:first-child{padding:22px}.readiness article:nth-child(2){padding:0 8px}.readiness h3{font-size:23px}.readiness li{font-size:15px}.readiness p{font-size:14px}.faq{padding:0 0 44px;gap:26px}.faq h2{font-size:32px;max-width:330px}.faq-items details{padding:0 16px}.faq-items summary{font-size:15px;padding:18px 0;min-height:62px}.faq-items details p{font-size:14px}.footer{padding:22px 0 36px;gap:22px;align-items:start}.footer p{font-size:14px}.footer>div{margin-left:0;flex-basis:100%;gap:26px;font-size:14px}}
@media(max-width:360px){.shell{padding:0 16px}.header nav{gap:10px;font-size:12px}.header nav a:nth-child(2){display:none}.hero h1{font-size:51px}.section-heading h2,h2{font-size:29px}.shutdown-section{padding:28px 18px}.federation-level span{font-size:11px}.scenario-controls button{font-size:12px}.one-message{white-space:normal}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}