@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap";:root{--color-bg:#f7f7f4;--color-text:#171918;--color-text-muted:#5b605d;--color-primary:#087f73;--color-blue:#3e6b8c;--color-success:#278a5b;--color-warning:#c58a24;--color-danger:#b8564d;--color-border:#d9ddda;--color-dark:#202423;--color-card-bg:#fff;--font-mono:"IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--max-width:1080px}*{box-sizing:border-box}html,body{background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);margin:0;padding:0}.escrow-app{background:var(--color-bg);min-height:100vh;color:var(--color-text);font-family:var(--font-sans)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}.pill{font-size:11.5px;font-family:var(--font-mono);letter-spacing:.02em;white-space:nowrap;border-radius:4px;align-items:center;gap:5px;padding:3px 9px;font-weight:600;display:inline-flex}.pill--neutral{color:var(--color-text-muted);background:#eeefec}.pill--primary{color:var(--color-primary);background:#087f7318}.pill--success{color:var(--color-success);background:#278a5b18}.pill--warning{color:var(--color-warning);background:#c58a2418}.pill--danger{color:var(--color-danger);background:#b8564d18}.pill--blue{color:var(--color-blue);background:#3e6b8c18}.section-label{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-muted);align-items:center;gap:8px;margin-bottom:10px;font-size:12px;display:flex}.section-label:before{content:"";background:var(--color-border);width:14px;height:1px;display:inline-block}.card{background:var(--color-card-bg);border-top:1px solid var(--color-border);border-right:1px solid var(--color-border);border-bottom:1px solid var(--color-border);border-left:1px solid var(--color-border);border-radius:6px;padding:20px}.card--muted{opacity:.6}.btn{font-family:var(--font-sans);border:1px solid var(--color-border);background:var(--color-card-bg);color:var(--color-text);cursor:pointer;border-radius:5px;padding:9px 16px;font-size:13.5px;font-weight:600;transition:transform .1s,opacity .15s}.btn:active{transform:scale(.97)}.btn:disabled{cursor:not-allowed;opacity:.4}.btn--small{padding:6px 10px;font-size:12.5px}.btn--primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.btn--danger{border-color:var(--color-danger);color:var(--color-danger);background:0 0}.btn--dark{background:var(--color-dark);border-color:var(--color-dark);color:#fff}.btn-chip{font-family:var(--font-sans);border:1px solid var(--color-border);cursor:pointer;background:#fff;border-radius:5px;padding:7px 12px;font-size:12.5px;font-weight:600}.top-nav{z-index:20;backdrop-filter:blur(6px);border-bottom:1px solid var(--color-border);background:#f7f7f4f2;position:sticky;top:0}.top-nav__inner{max-width:var(--max-width);justify-content:space-between;align-items:center;height:58px;margin:0 auto;padding:0 24px;display:flex}.top-nav__brand{align-items:center;gap:10px;display:flex}.top-nav__logo{background:var(--color-dark);width:22px;height:22px;font-family:var(--font-mono);color:#fff;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;display:flex}.top-nav__name{font-family:var(--font-mono);white-space:nowrap;font-size:13.5px;font-weight:600}.top-nav__name span{color:var(--color-primary)}.top-nav__tabs{gap:2px;display:flex}.top-nav__tab{font-family:var(--font-sans);color:var(--color-text-muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:5px;padding:7px 14px;font-size:13.5px;font-weight:600}.top-nav__tab--active{background:var(--color-dark);color:#fff}.tab-page{max-width:780px;margin:0 auto;padding:72px 24px 100px}.tab-page--wide{max-width:var(--max-width);padding-top:40px}.tab-page--full{width:100%;max-width:none;padding:40px 32px 100px}.tab-page--medium{max-width:900px;padding-top:56px}.tab-page--narrow{max-width:760px;padding-top:56px}.tab-page--essay{max-width:720px;padding-top:56px}.hero-title{font-family:var(--font-sans);letter-spacing:-.02em;color:var(--color-text);margin:18px 0 16px;font-size:44px;font-weight:700;line-height:1.12}.hero-sub{font-family:var(--font-sans);color:var(--color-text-muted);max-width:600px;margin:0;font-size:17px;line-height:1.6}.hero-ctas{flex-wrap:wrap;gap:10px;margin-top:28px;display:flex}.reframe-grid{margin-top:64px}.reframe-grid__cards{grid-template-columns:1fr 1fr;gap:14px;display:grid}.reframe-label{font-family:var(--font-mono);margin-bottom:8px;font-size:12px}.reframe-label--no{color:var(--color-danger)}.reframe-label--yes{color:var(--color-primary)}.reframe-text{font-family:var(--font-sans);font-size:15px}.reframe-text--muted{color:var(--color-text-muted)}.card--accent-primary{border-top-color:var(--color-primary);border-top-width:2px}.expander{margin-top:56px}.expander__toggle{text-align:left;background:var(--color-card-bg);border:1px solid var(--color-border);cursor:pointer;width:100%;font-family:var(--font-sans);color:var(--color-text);border-radius:6px;justify-content:space-between;align-items:center;padding:16px 20px;font-size:14.5px;font-weight:600;display:flex}.expander__icon{font-family:var(--font-mono);color:var(--color-text-muted)}.expander__body{font-family:var(--font-sans);color:var(--color-text-muted);border-left:2px solid var(--color-border);margin-left:4px;padding:18px 20px;font-size:14.5px;line-height:1.65}.expander__body p{margin:0 0 14px}.expander__body p:last-child{margin-bottom:0}.expander__body strong{color:var(--color-text)}.expander__body code{font-family:var(--font-mono)}.playground-header{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:22px;display:flex}.playground-header h2{font-family:var(--font-sans);margin:0;font-size:26px;font-weight:700}.playground-header p{font-family:var(--font-sans);color:var(--color-text-muted);max-width:520px;margin:4px 0 0;font-size:14px}.playground-grid{grid-template-columns:1.3fr 1fr;align-items:start;gap:20px;display:grid}.playground-col{flex-direction:column;gap:20px;display:flex}.escrow-diagram{padding:28px}.escrow-diagram__parties{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.escrow-diagram__contract-wrap{justify-content:center;margin:22px 0;display:flex}.escrow-diagram__contract{border:1.5px dashed var(--color-border);text-align:center;background:#fbfbfa;border-radius:10px;min-width:220px;padding:18px 32px}.escrow-diagram__contract-label{font-family:var(--font-mono);color:var(--color-text-muted);margin-bottom:6px;font-size:11px}.escrow-diagram__amount{font-family:var(--font-mono);font-size:22px;font-weight:700}.escrow-diagram__status{flex-wrap:wrap;justify-content:center;gap:6px;margin-top:8px;display:flex}.escrow-diagram__id{font-family:var(--font-mono);color:var(--color-text-muted);word-break:break-all;margin-top:8px;font-size:10px}.escrow-diagram__arbiter-row{justify-content:center;display:flex}.escrow-diagram__footer{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:18px;display:flex}.participant-node{flex-direction:column;align-items:center;gap:8px;transition:transform .2s;display:flex}.participant-node--highlighted{transform:scale(1.06)}.participant-node__circle{width:68px;height:68px;font-family:var(--font-mono);background:#fff;border-style:solid;border-width:2px;border-radius:50%;justify-content:center;align-items:center;font-size:13px;font-weight:700;transition:all .25s;display:flex}.participant-node__label{text-align:center}.participant-node__name{font-family:var(--font-sans);font-size:13.5px;font-weight:700}.participant-node__sub{font-family:var(--font-mono);color:var(--color-text-muted);font-size:10.5px}.progress-track{align-items:center;gap:0;display:flex}.progress-step{flex-direction:column;flex-shrink:0;align-items:center;gap:6px;display:flex}.progress-step__dot{border:2px solid var(--color-border);background:#fff;border-radius:50%;width:12px;height:12px}.progress-step--active .progress-step__dot{border-color:var(--color-dark);background:var(--color-dark)}.progress-step--success .progress-step__dot{border-color:var(--color-success);background:var(--color-success)}.progress-step--blue .progress-step__dot{border-color:var(--color-blue);background:var(--color-blue)}.progress-step__label{font-family:var(--font-sans);color:var(--color-text-muted);white-space:nowrap;font-size:11.5px;font-weight:600}.progress-step--active .progress-step__label{color:var(--color-text)}.progress-line{background:var(--color-border);flex:1;height:2px;margin:0 8px 18px}.progress-line--active{background:var(--color-dark)}.progress-note{font-family:var(--font-sans);color:var(--color-text-muted);margin-top:12px;font-size:11.5px}.progress-fee-note{border-top:1px dashed var(--color-border);flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px;padding-top:10px;display:flex}.progress-fee-note span{font-family:var(--font-sans);color:var(--color-text-muted);font-size:11.5px}.actions-row{flex-wrap:wrap;gap:8px;display:flex}.try-break-card{border-top-color:var(--color-danger);border-top-width:2px}.try-break-card__note{font-family:var(--font-sans);color:var(--color-text-muted);margin:0 0 12px;font-size:12.5px;line-height:1.5}.auth-trace{font-family:var(--font-sans);grid-template-columns:auto 1fr;gap:10px 16px;font-size:13.5px;display:grid}.auth-trace__k{font-family:var(--font-mono);color:var(--color-text-muted);text-transform:uppercase;font-size:11px}.auth-trace__actor{font-weight:600}.auth-trace__transition{font-family:var(--font-mono);color:var(--color-success);font-weight:700}.auth-trace--valid{border-left:3px solid var(--color-success)}.auth-trace--invalid{border-left:3px solid var(--color-danger)}.auth-trace--valid-text{color:var(--color-success)}.auth-trace--invalid-text{color:var(--color-danger)}.event-log{padding:0;overflow:hidden}.event-log__header{border-bottom:1px solid var(--color-border);font-family:var(--font-mono);color:var(--color-text-muted);letter-spacing:.05em;padding:12px 18px;font-size:11.5px}.event-log__body{max-height:320px;font-family:var(--font-mono);font-size:12px;overflow-y:auto}.event-log__empty{color:var(--color-text-muted);padding:18px}.event-log__entry{border-bottom:1px solid var(--color-border);padding:12px 18px}.event-log__meta{color:var(--color-text-muted);margin-bottom:4px;font-size:10.5px}.event-log__meta span{text-transform:uppercase}.event-log__label{color:var(--color-text)}.event-log__result{margin-top:3px;font-weight:700}.event-log__result--valid{color:var(--color-success)}.event-log__result--invalid{color:var(--color-danger)}.event-log__result--relay{color:var(--color-blue)}.walkthrough__strip{background:var(--color-card-bg);border:1px solid var(--color-border);border-radius:6px;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:20px;padding:18px 20px;display:flex}.walkthrough__strip-text{flex:1;min-width:260px}.walkthrough__strip-actions{flex-wrap:wrap;flex-shrink:0;align-items:center;gap:8px;padding-top:2px;display:flex}.walkthrough-beat__eyebrow{font-family:var(--font-mono);color:var(--color-primary);letter-spacing:.04em;text-transform:uppercase;margin-bottom:8px;font-size:11px}.walkthrough-beat__title{font-family:var(--font-sans);margin-bottom:6px;font-size:17px;font-weight:700;line-height:1.35}.walkthrough-beat__body{font-family:var(--font-sans);color:var(--color-text-muted);margin:0;font-size:13.5px;line-height:1.6}.stage{padding:0;overflow:hidden}.stage__header{border-bottom:1px solid var(--color-border);background:#fbfbfa;flex-wrap:wrap;align-items:center;gap:10px;padding:16px 20px;display:flex}.stage__amount{font-family:var(--font-mono);margin-right:4px;font-size:15px;font-weight:700}.stage__canvas{aspect-ratio:16/9;background:radial-gradient(circle at 50% 52%,#08807318 0%,#0000 45%),#fbfbfa;width:100%;min-height:380px;position:relative}.stage__edges{width:100%;height:100%;position:absolute;inset:0}.stage__edge{stroke:var(--color-border);stroke-width:.35px;vector-effect:non-scaling-stroke}.stage__edge--relay{stroke-dasharray:1.2 1.2;opacity:.6}.stage__edge--active{stroke:var(--color-primary);stroke-width:.55px;opacity:.85}.stage-node{z-index:2;flex-direction:column;align-items:center;gap:6px;width:max-content;display:flex;position:absolute;transform:translate(-50%,-50%)}.stage-node__circle{width:72px;height:72px;font-family:var(--font-mono);background:#fff;border-style:solid;border-width:2.5px;border-radius:50%;justify-content:center;align-items:center;font-size:20px;font-weight:700;transition:all .25s;display:flex;box-shadow:0 2px 8px #00000012}.stage-node--highlighted .stage-node__circle{box-shadow:0 0 0 6px,0 2px 8px #00000012}.stage-node--federation .stage-node__circle{width:80px;height:80px;font-size:24px}.stage-node__label{font-family:var(--font-sans);white-space:nowrap;font-size:13.5px;font-weight:700}.stage-node__sub{font-family:var(--font-mono);color:var(--color-text-muted);white-space:nowrap;font-size:10.5px}.stage__flight-pos{z-index:3;transition:left .65s ease-in-out,top .65s ease-in-out;position:absolute;transform:translate(-50%,-50%)}.flight-marker{border-radius:20px;justify-content:center;align-items:center;padding:6px 12px;animation:.9s ease-in-out infinite flight-pulse;display:flex;box-shadow:0 3px 10px #0002}.flight-marker__kind{font-family:var(--font-mono);color:#fff;white-space:nowrap;font-size:10px;font-weight:700}@keyframes flight-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.08)}}.docked-packet{border-top:2px solid var(--color-primary);border-radius:0;flex-wrap:wrap;align-items:center;gap:20px;padding:20px;display:flex}.docked-packet__route{font-family:var(--font-mono);color:var(--color-text-muted);flex-shrink:0;align-items:center;gap:8px;font-size:14px;display:flex}.docked-packet__party{color:var(--color-text);font-weight:700}.docked-packet__arrow{color:var(--color-primary);font-size:14px}.docked-packet__offchain{color:var(--color-blue);text-transform:uppercase;letter-spacing:.03em;background:#3e6b8c18;border-radius:4px;padding:2px 7px;font-size:10px}.docked-packet__body{cursor:pointer;text-align:left;background:0 0;border:none;flex-direction:column;flex:1;align-items:flex-start;gap:3px;min-width:220px;padding:0;display:flex}.docked-packet__kind{font-family:var(--font-mono);color:var(--color-primary);text-transform:uppercase;letter-spacing:.04em;font-size:10.5px}.docked-packet__title{font-family:var(--font-sans);color:var(--color-text);font-size:16px;font-weight:700}.docked-packet__hint{font-family:var(--font-sans);color:var(--color-text-muted);font-size:11.5px}.inspector{min-height:220px;padding:26px}.inspector__head{justify-content:space-between;align-items:flex-start;margin-bottom:18px;display:flex}.inspector__kind{font-family:var(--font-mono);color:var(--color-primary);text-transform:uppercase;letter-spacing:.04em;margin-bottom:5px;font-size:12px}.inspector__title{font-family:var(--font-sans);font-size:19px;font-weight:700}.inspector__close{cursor:pointer;font-family:var(--font-mono);color:var(--color-text-muted);background:0 0;border:none;padding:4px 8px;font-size:15px}.inspector__fields{flex-direction:column;gap:12px;padding-bottom:8px;display:flex}.inspector__field{grid-template-columns:160px 1fr;gap:14px;font-size:13.5px;display:grid}.inspector__field-key{font-family:var(--font-mono);color:var(--color-text-muted);word-break:break-word}.inspector__field-value{font-family:var(--font-mono);color:var(--color-text);word-break:break-word;line-height:1.6}.inspector__result{border-top:1px solid var(--color-border);margin-top:18px;padding-top:18px}.inspector__result-status{font-family:var(--font-sans);margin-bottom:8px;font-size:15.5px;font-weight:700}.inspector__result--valid .inspector__result-status{color:var(--color-success)}.inspector__result--invalid .inspector__result-status{color:var(--color-danger)}.inspector__result--relay .inspector__result-status{color:var(--color-blue)}.inspector__result-reason{font-family:var(--font-sans);color:var(--color-text-muted);font-size:13.5px;line-height:1.65}.inspector__result-payout{font-family:var(--font-mono);color:var(--color-success);margin-top:10px;font-size:13px;font-weight:700}.inspector-empty{text-align:center;justify-content:center;align-items:center;min-height:220px;display:flex}.inspector-empty span{font-family:var(--font-mono);color:var(--color-text-muted);font-size:12.5px}.event-log__entry--clickable{text-align:left;border:none;border-bottom:1px solid var(--color-border);cursor:pointer;width:100%;font-family:var(--font-mono);background:0 0;padding:12px 18px;display:block}.event-log__entry--clickable:hover{background:#fbfbfa}.status-board__rows{flex-direction:column;gap:10px;display:flex}.status-row{border:1px solid var(--color-border);border-radius:6px;align-items:flex-start;gap:12px;padding:12px;display:flex}.status-row--live{background:#278a5b0d;border-color:#278a5b40}.status-row--dead{background:#fbfbfa}.status-row__dot{border-radius:50%;flex-shrink:0;width:8px;height:8px;margin-top:5px}.status-row--live .status-row__dot{background:var(--color-success);box-shadow:0 0 0 3px #278a5b22}.status-row--dead .status-row__dot{background:var(--color-border)}.status-row__body{flex:1;min-width:0}.status-row__head{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:4px;display:flex}.status-row__actor{font-family:var(--font-sans);font-size:13px;font-weight:700}.status-row__action{font-family:var(--font-mono);color:var(--color-text-muted);font-size:11.5px}.status-row__badge{font-family:var(--font-mono);letter-spacing:.04em;border-radius:3px;margin-left:auto;padding:2px 6px;font-size:9.5px;font-weight:700}.status-row__badge--live{color:var(--color-success);background:#278a5b22}.status-row__badge--dead{color:var(--color-text-muted);background:#d9ddda80}.status-row__reason{font-family:var(--font-sans);color:var(--color-text-muted);font-size:12.5px;line-height:1.5}.page-title{font-family:var(--font-sans);color:var(--color-text);margin:14px 0 8px;font-size:30px;font-weight:700}.page-title--sm{font-size:28px}.page-sub{font-family:var(--font-sans);color:var(--color-text-muted);max-width:620px;margin:0;font-size:15px;line-height:1.6}.trust-table{flex-direction:column;gap:10px;margin-top:40px;display:flex}.trust-row{border-top-style:solid;border-top-width:2px}.trust-row__grid{grid-template-columns:140px 1fr 1fr;align-items:start;gap:18px;display:grid}.trust-row__actor{font-family:var(--font-sans);font-size:14.5px;font-weight:700}.trust-row__k{font-family:var(--font-mono);margin-bottom:4px;font-size:10.5px}.trust-row__k--can{color:var(--color-success)}.trust-row__k--cannot{color:var(--color-danger)}.trust-row__v{font-family:var(--font-sans);font-size:13.5px;line-height:1.5}.trust-row__v--muted{color:var(--color-text-muted)}.assumptions-section{margin-top:56px}.assumptions-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.assumption-card__body{font-family:var(--font-sans);color:var(--color-text-muted);font-size:13.5px;line-height:1.55}.not-required{background:var(--color-dark);color:#edeeec;border:none;margin-top:32px}.not-required__title{font-family:var(--font-mono);color:#9fa6a2;letter-spacing:.05em;margin-bottom:12px;font-size:11.5px}.not-required__grid{grid-template-columns:1fr 1fr;gap:10px 20px;display:grid}.not-required__item{font-family:var(--font-sans);color:#edeeec;gap:8px;font-size:13.5px;display:flex}.not-required__item span{color:var(--color-primary)}.thesis-quote{border-top:1px solid var(--color-border);margin-top:48px;padding:20px 0}.thesis-quote p{font-family:var(--font-sans);color:var(--color-text);margin:0;font-size:15px;font-style:italic;line-height:1.6}.tech-arch{margin-top:40px}.tech-arch__body{border:1px solid var(--color-border);border-top:none;border-radius:0 0 6px 6px;padding:20px}.tech-arch__grid{grid-template-columns:1fr 1fr;gap:20px;display:grid}.tech-arch__label{font-family:var(--font-mono);margin-bottom:8px;font-size:11px}.tech-arch__label--off{color:var(--color-danger)}.tech-arch__label--enforced{color:var(--color-success)}.tech-arch__list{font-family:var(--font-sans);color:var(--color-text-muted);margin:0;padding-left:18px;font-size:13px;line-height:1.8}.tech-arch__hash-block{font-family:var(--font-mono);color:var(--color-text-muted);border:1px solid var(--color-border);white-space:nowrap;background:#fbfbfa;border-radius:6px;margin-top:18px;padding:14px;font-size:11.5px;line-height:1.9;overflow-x:auto}@media (width<=860px){.playground-grid{grid-template-columns:1fr}.trust-row__grid{grid-template-columns:1fr;gap:8px}.assumptions-grid,.not-required__grid,.tech-arch__grid,.reframe-grid__cards{grid-template-columns:1fr}}@media (width<=640px){.walkthrough__strip{flex-direction:column}.walkthrough__strip-actions{width:100%}.walkthrough__strip-actions .btn{flex:1}.tab-page--full{padding:32px 16px 100px}.stage__header{padding:12px 16px}.stage__canvas{aspect-ratio:1/1.05;min-height:300px}.stage-node__circle{width:48px;height:48px;font-size:14px}.stage-node--federation .stage-node__circle{width:54px;height:54px;font-size:16px}.stage-node__label{font-size:10.5px}.stage-node__sub{display:none}.docked-packet{flex-direction:column;align-items:stretch;gap:12px;padding:16px}.docked-packet__body{min-width:0}.docked-packet .btn{width:100%}.inspector__field{grid-template-columns:1fr;gap:2px}.top-nav__inner{flex-wrap:wrap;justify-content:center;gap:10px;height:auto;padding:10px 16px}.top-nav__tabs{flex-wrap:wrap;justify-content:center;width:100%}.top-nav__tab{padding:6px 10px;font-size:12.5px}.tab-page,.tab-page--wide,.tab-page--medium,.tab-page--narrow,.tab-page--essay{padding-top:40px;padding-left:16px;padding-right:16px}.hero-title{font-size:30px}.hero-sub{font-size:15px}.page-title,.page-title--sm{font-size:22px}.escrow-diagram__parties{flex-direction:column;align-items:center;gap:20px}.escrow-diagram__contract{width:100%;min-width:0;padding:16px 18px}.escrow-diagram{padding:18px}.state-machine__branches{flex-direction:column;align-items:center}.walkthrough-beat__choices{flex-direction:column}.walkthrough-beat__choices .btn{width:100%}.essay-heading{font-size:17px}.essay-para{font-size:14px}}@media (width<=400px){.hero-title{font-size:26px}.participant-node__circle{width:56px;height:56px}}