@font-face{font-family:Manrope;src:url('/assets/fonts/manrope-400.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:Manrope;src:url('/assets/fonts/manrope-600.ttf') format('truetype');font-weight:600 800;font-display:swap}
@font-face{font-family:Inter;src:url('/assets/fonts/inter-heading-500.ttf') format('truetype');font-weight:500;font-display:swap}
:root{--paper:#ececf1;--surface:#f3f3f8;--ink:#343442;--muted:#626274;--line:#d5d5de;--white:#fff;--radius:24px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.7 Manrope,system-ui,sans-serif}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:5px}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button{color:inherit}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--ink);outline-offset:5px}a:hover{color:#101019}img{max-width:100%;display:block}h1,h2,h3,p{margin:0}h1,h2{font-family:Inter,Manrope,sans-serif;font-weight:500;letter-spacing:-.045em;line-height:1.12}h1{font-size:clamp(36px,4.15vw,60px);text-wrap:balance}h2{font-size:clamp(28px,2.6vw,38px);text-wrap:balance}h3{font-size:18px;line-height:1.4;font-weight:600;letter-spacing:-.02em}p{max-width:70ch}p+p{margin-top:16px}code{font-size:.9em;overflow-wrap:anywhere}ul,ol{padding-left:23px}li+li{margin-top:8px}[hidden]{display:none!important}.page-wrap,.site-header,.site-footer{width:min(1240px,calc(100% - 96px));margin-inline:auto}.skip{position:absolute;left:24px;top:-90px;z-index:20;background:white;padding:8px 16px}.skip:focus{top:12px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:30px}.wordmark{font-family:Inter,sans-serif;font-size:24px;letter-spacing:-.05em;text-decoration:none;line-height:1.2}.wordmark span{display:block;font:400 11px/1.5 Manrope,sans-serif;letter-spacing:0;margin-top:5px;color:var(--muted)}.site-header nav{display:flex;gap:30px;font-size:14px}.site-header nav a{text-decoration:none}.site-header nav a:hover{text-decoration:underline}.hero{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:56px;min-height:610px;padding-block:48px 80px}.hero-copy{min-width:0}.back-link{font-size:13px;text-decoration:none;color:var(--muted);display:inline-block;margin-bottom:25px}.hero-lead{font-size:17px;line-height:1.7;margin-top:25px;max-width:48ch;color:var(--muted)}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:22px;margin-top:32px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;background:var(--ink);color:var(--surface);border:1px solid var(--ink);border-radius:12px;padding:13px 21px;font-size:14px;text-decoration:none;line-height:1.5;transition:background .15s}.button:hover{background:#171722;color:white}.text-action{font-size:14px;text-decoration:none;display:inline-block}.text-action:hover{text-decoration:underline}.hero-object{min-width:0;background:var(--surface);border-radius:32px;min-height:400px;display:grid;place-items:center;padding:35px;box-shadow:12px 12px 30px #dcdce5,-12px -12px 30px #fafaff}.reading-layout{display:grid;grid-template-columns:225px minmax(0,1fr);gap:70px;padding-top:25px}.contents nav{display:flex;flex-direction:column;gap:14px}.contents{align-self:start;position:sticky;top:32px;font-size:13px}.contents-label{font-weight:600;margin-bottom:10px}.contents nav a{text-decoration:none;color:var(--muted)}.contents nav a:hover{color:var(--ink);text-decoration:underline}.byline{display:flex;flex-direction:column;gap:6px;margin-top:38px;padding-top:20px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.byline a{text-decoration:none}.article-body{min-width:0;max-width:900px}.content-section{margin-bottom:76px;scroll-margin-top:28px}.content-section>h2{margin-bottom:27px}.content-section>p{margin-bottom:20px}.content-section>a{font-size:14px;display:inline-block;margin:8px 15px 8px 0}.answer{border-top:1px solid var(--line)}.answer:last-child{border-bottom:1px solid var(--line)}summary{list-style:none}summary::-webkit-details-marker{display:none}.answer>summary{display:flex;justify-content:space-between;align-items:center;gap:20px;font-weight:600;line-height:1.5;padding:21px 0;font-size:16px}.answer>summary>span:last-child{font-size:23px;font-weight:400;flex-shrink:0;transition:transform .15s}.answer[open]>summary>span:last-child{transform:rotate(45deg)}.answer-body{padding:0 26px 25px 0;color:var(--muted)}.answer-body a{display:inline-block;margin:13px 14px 0 0;font-size:14px;color:var(--ink)}.sequence{list-style:none;padding:0;counter-reset:steps}.sequence>li{position:relative;padding-left:55px;margin:0 0 30px}.sequence>li:before{counter-increment:steps;content:counter(steps);position:absolute;left:0;top:0;display:grid;place-items:center;width:32px;height:32px;background:var(--surface);border-radius:50%;box-shadow:3px 3px 8px #d8d8e2,-3px -3px 8px #fff;font-size:13px}.sequence h3{padding-top:3px;margin-bottom:11px}.sequence p{color:var(--muted)}.sequence a{display:inline-block;font-size:14px;margin-top:14px}.split-story{display:grid;grid-template-columns:1fr;gap:30px}.split-story p{color:var(--muted)}.split-story .text-action{margin-top:20px}.proof{margin:0;background:var(--surface);border-radius:18px;overflow:hidden}.proof>a{position:relative;display:block;padding:14px;text-decoration:none}.proof img{width:100%;height:auto;border-radius:9px}.image-hint{position:absolute;right:24px;bottom:24px;font-size:11px;padding:5px 12px;border-radius:20px;background:var(--surface);box-shadow:0 3px 12px #34344222}.proof figcaption{font-size:12px;color:var(--muted);padding:4px 20px 19px;line-height:1.6}.sources{font-size:13px;border-top:1px solid var(--line);padding-block:18px}.sources summary{display:flex;justify-content:space-between}.sources p{margin-top:15px;color:var(--muted)}.sources ul{margin-block:15px 0}.help-section{margin-top:75px;padding:45px 50px;display:grid;grid-template-columns:1.5fr 1fr;gap:50px;background:var(--surface);border-radius:24px}.help-section p{color:var(--muted);margin-top:18px;max-width:56ch}.help-actions{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:17px}.related{margin-block:65px}.related>h2{font-size:24px;margin-bottom:25px}.related>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.related-link{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:15px;text-decoration:none;font-size:15px}.site-footer{display:flex;align-items:center;gap:30px;border-top:1px solid var(--line);padding-block:30px;font-size:12px;color:var(--muted)}.site-footer p{margin-right:auto}.site-footer .wordmark{color:var(--ink)}.site-footer>a:not(.wordmark){text-decoration:none}.image-dialog{border:0;border-radius:16px;padding:20px;background:var(--surface);color:var(--ink);width:min(1200px,94vw);max-height:92dvh}.image-dialog::backdrop{background:#191921bb}.dialog-close{display:block;margin:0 0 15px auto;border:1px solid var(--line);border-radius:8px;background:transparent;padding:5px 12px}.image-dialog img{margin:auto;max-height:72dvh;object-fit:contain}.image-dialog p{font-size:13px;margin-top:12px}.copy-status{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:10px 20px;border-radius:10px;z-index:30;font-size:14px;max-width:90vw;text-align:center}
/* Each subject has its own visual structure. */
.letter-art{width:100%;padding:8px}.letter-icon{width:62px;height:62px;display:grid;place-items:center;border-radius:18px;box-shadow:6px 6px 13px #dcdce6,-6px -6px 13px #fff;font-size:30px;margin-bottom:30px}.letter-art>span{font-size:13px;color:var(--muted)}.letter-art>strong{font-family:Inter,sans-serif;font-weight:500;font-size:34px;line-height:1.25;letter-spacing:-.04em;display:block;margin-top:14px}.letter-route{display:flex;gap:18px;border-top:1px solid var(--line);margin-top:26px;padding-top:18px;font-size:11px}.terminal-art{width:100%;background:#343442;color:#f3f3f8;border-radius:17px;box-shadow:0 24px 30px #34344226;transform:rotate(-3deg);overflow:hidden}.terminal-top{display:flex;align-items:center;gap:5px;padding:16px 18px;background:#3e3e4d}.terminal-top i{width:6px;height:6px;border-radius:50%;background:#b5b5c5}.terminal-top>span{font-size:10px;color:#d6d6e2;margin-left:auto}.terminal-lines{padding:26px 23px 35px;display:flex;flex-direction:column;gap:13px;font:13px/1.6 ui-monospace,monospace}.terminal-lines strong{font-size:24px;font-weight:400}.terminal-lines>span{color:#c9c9d8}.terminal-lines em{font:11px/1.6 Manrope,sans-serif;color:#d6d6e2}.terminal-divider{height:1px;background:#57576b;margin-block:7px}.cursor{margin-left:8px}.error-picker{display:flex;flex-wrap:wrap;gap:9px;margin:25px 0}.error-picker a{background:var(--surface);border:1px solid var(--line);border-radius:9px;text-decoration:none;font-size:13px;padding:7px 13px}.error-picker a:hover{border-color:var(--ink)}.diagnostic code{display:inline-block;margin-right:12px;font-size:14px}.diagnostic:target{background:#f3f3f877}.auth-split,.workspace-notes{display:grid;grid-template-columns:1fr 1fr;gap:35px;margin-bottom:25px}.auth-split p,.workspace-notes p{font-size:15px;color:var(--muted);margin-top:13px}.auth-split>div+div{border-left:1px solid var(--line);padding-left:30px}.command-row{display:flex;align-items:center;justify-content:space-between;gap:15px;background:var(--surface);border-radius:14px;padding:20px 25px;margin-bottom:25px}.command-row>div{display:flex;flex-direction:column;gap:8px}.command-row span{font-size:12px;color:var(--muted)}.command-row button{font-size:12px;padding:9px 12px;background:transparent;border:1px solid var(--line);border-radius:8px}.report-note{background:var(--surface);border-radius:18px;padding:30px}.report-note p{font-size:13px;color:var(--muted)}.payment-art{width:100%;text-align:center}.payment-art>span{font-size:12px;color:var(--muted)}.receipt{text-align:left;padding:25px;background:#f8f8fc;border-radius:6px;box-shadow:0 15px 25px #d4d4df;transform:rotate(3deg);margin:24px 0 30px;border-bottom:5px dotted var(--surface)}.receipt>div{display:flex;justify-content:space-between;gap:15px;line-height:1.5;font-size:11px;margin-top:18px}.receipt .receipt-head{margin-top:0;padding-bottom:18px;border-bottom:1px solid var(--line);align-items:center}.receipt-head strong{font:500 29px Inter,sans-serif;letter-spacing:-.04em}.receipt .receipt-bottom{border-top:1px dashed var(--line);padding-top:20px;font-size:11px}.comparison-wrap{overflow:auto;margin-bottom:25px}.comparison{border-collapse:collapse;width:100%;font-size:14px;text-align:left;line-height:1.65}.comparison caption{text-align:left;color:var(--muted);font-size:12px;margin-bottom:20px}.comparison th,.comparison td{padding:18px 20px 18px 0;vertical-align:top;border-bottom:1px solid var(--line);min-width:160px}.comparison th{font-weight:600}.comparison thead th{font-size:12px;color:var(--muted);padding-top:0}.card-art{width:100%;perspective:800px}.bank-card{padding:25px;background:#e5e5ed;aspect-ratio:1.6;border-radius:20px;box-shadow:12px 20px 30px #c9c9d3,-5px -5px 15px #fff;transform:rotate(-7deg) rotateY(-8deg);display:flex;flex-direction:column;justify-content:space-between}.card-brand,.card-foot{display:flex;justify-content:space-between;align-items:center;font-size:12px;gap:15px}.card-brand span{font-size:24px}.card-foot{font-size:9px;color:var(--muted)}.chip{width:36px;height:28px;border:1px solid #9e9eaf;border-radius:7px;background:linear-gradient(90deg,transparent 31%,#9e9eaf 32%,transparent 34%,transparent 66%,#9e9eaf 67%,transparent 69%)}.card-number{font-size:21px;letter-spacing:.11em}.card-shadow-label{text-align:center;margin-top:45px;font-size:12px;color:var(--muted)}.provider-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:35px}.provider-layout p{color:var(--muted)}.provider-layout .text-action{margin-top:20px}.affiliate-label{font-size:11px;color:var(--muted);display:inline-block;margin:10px 0 10px 10px}.provider-steps{display:flex;flex-direction:column;justify-content:center;border-left:1px solid var(--line);padding-left:28px;gap:18px;font-size:14px}.provider-steps span+span:before{content:'↓';display:block;color:var(--muted);font-size:13px;margin-bottom:10px}.cost-calculator{display:grid;grid-template-columns:1.3fr 1fr;background:var(--surface);border-radius:20px;padding:30px;gap:35px}.cost-fields{display:grid;gap:15px}.cost-fields label{font-size:13px}.cost-fields input{display:block;width:100%;background:var(--paper);border:1px solid var(--line);color:var(--ink);border-radius:8px;margin-top:7px;padding:10px 13px;min-width:0}.cost-total{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:18px}.cost-total>span,.cost-total small{font-size:12px;color:var(--muted)}.cost-total output{font:500 40px Inter,sans-serif;overflow-wrap:anywhere;max-width:100%}.server-art{width:100%;display:flex;flex-direction:column;align-items:center}.local-device{border:7px solid #dedee8;border-radius:12px;background:#f9f9fc;width:80%;padding:16px 20px;box-shadow:7px 8px 18px #d2d2df;transform:rotate(-4deg)}.local-device span,.remote-device>span{font-size:10px;color:var(--muted);display:block}.local-device strong,.remote-device strong{font:500 22px Inter,sans-serif;display:block;margin-top:7px}.device-lines{display:grid;gap:5px;margin-top:14px}.device-lines i{height:3px;border-radius:2px;width:75%;background:#d9d9e2}.device-lines i:nth-child(2){width:50%}.device-lines i:nth-child(3){width:65%}.connection{display:flex;gap:10px;align-items:center;height:65px;font-size:10px;color:var(--muted)}.connection i{height:45px;border-left:1px dashed #9898ab}.remote-device{width:92%;padding:23px 25px;border-radius:14px;background:#e2e2eb;box-shadow:8px 8px 19px #d0d0dd,-5px -5px 18px #fff;transform:rotate(3deg)}.remote-device>div{font-size:10px;margin-top:13px;color:var(--muted)}.architecture{display:grid;grid-template-columns:1fr 1fr;gap:30px}.architecture>div{border-top:1px solid var(--line);padding-top:25px}.architecture p{margin-top:15px;font-size:15px;color:var(--muted)}.path-line{margin:23px 0 27px;display:flex;align-items:center;gap:8px;font-size:11px}.path-line span{padding:8px;background:var(--surface);border-radius:5px}.path-line b{font-weight:400}.workspace-notes{margin-top:25px}.provider-link{margin-top:20px}.hub-intro{padding-block:65px 50px}.hub-intro h1{font-size:clamp(45px,6vw,80px);margin:22px 0}.hub-intro p{color:var(--muted)}.hub-intro>p:first-child{font-size:13px}.hub-list{margin-bottom:65px}.hub-item{display:grid;grid-template-columns:80px 1fr 40px;align-items:center;gap:30px;border-top:1px solid var(--line);padding:30px 0;text-decoration:none}.hub-item:last-child{border-bottom:1px solid var(--line)}.hub-item h2{font-size:28px}.hub-item p{color:var(--muted);font-size:14px;margin-top:10px;max-width:70ch}.hub-symbol{width:64px;height:64px;display:grid;place-items:center;background:var(--surface);border-radius:18px;font-size:26px;box-shadow:5px 5px 12px #dcdce6,-5px -5px 12px #fff}.hub-arrow{font-size:25px;transition:transform .15s}.hub-item:hover .hub-arrow{transform:translate(3px,-3px)}.hub-bottom{margin-bottom:65px}.hub-bottom p{margin:20px 0;color:var(--muted)}
@media(min-width:1450px){.hero{min-height:670px}.hero-object{min-height:430px}}
@media(max-width:1100px){.page-wrap,.site-header,.site-footer{width:calc(100% - 56px)}.hero{gap:35px;min-height:570px}.hero-object{padding:25px;min-height:360px}.reading-layout{grid-template-columns:180px minmax(0,1fr);gap:40px}.hero-actions{gap:17px}.terminal-lines{padding:25px 18px;font-size:12px}.letter-art>strong{font-size:30px}.letter-route{gap:12px}.provider-layout{grid-template-columns:1fr}.provider-steps{flex-direction:row;flex-wrap:wrap;border-left:0;padding:0;gap:16px}.provider-steps span+span:before{display:none}.card-number{font-size:17px}.bank-card{padding:20px}.architecture{grid-template-columns:1fr;gap:10px}}
@media(max-width:760px){body{font-size:15px}.page-wrap,.site-header,.site-footer{width:calc(100% - 40px)}.site-header{padding-block:22px;gap:16px}.site-header nav{gap:16px;font-size:12px}.wordmark{font-size:22px}.wordmark span{display:none}.site-header nav a:last-child{display:none}.hero{grid-template-columns:1fr;gap:36px;padding-block:30px 48px;min-height:0}.hero h1{font-size:clamp(35px,7.6vw,53px)}.hero-lead{font-size:15px;margin-top:20px;max-width:55ch}.back-link{margin-bottom:20px}.hero-actions{gap:18px;margin-top:25px}.hero-object{min-height:300px;padding:30px;box-shadow:7px 7px 20px #dcdce5,-7px -7px 20px #fafaff;border-radius:24px}.reading-layout{display:block;padding-top:0}.contents{position:static;margin-bottom:42px;padding-block:20px;border-block:1px solid var(--line)}.contents nav{flex-direction:row;flex-wrap:wrap;gap:8px 20px;font-size:12px}.contents-label{width:100%;margin:0 0 4px}.byline{border:0;margin:18px 0 0;padding:0;flex-direction:row;flex-wrap:wrap;gap:5px 15px;font-size:10px}.content-section{margin-bottom:48px}.content-section>h2{margin-bottom:23px}.answer>summary{font-size:15px;padding:18px 0;gap:12px}.answer-body{padding-right:0}.sequence>li{padding-left:45px}.sequence h3{font-size:16px}.auth-split,.workspace-notes{gap:22px}.auth-split p,.workspace-notes p{font-size:14px}.auth-split>div+div{padding-left:20px}.help-section{margin-top:42px;padding:28px;grid-template-columns:1fr;gap:27px}.help-section h2{font-size:29px}.related{margin-block:42px}.related>div{grid-template-columns:1fr;gap:18px}.related-link{font-size:14px}.site-footer{gap:16px;flex-wrap:wrap;padding-block:24px}.site-footer p{width:calc(100% - 90px);margin-right:0}.site-footer a{font-size:12px}.site-footer .wordmark{font-size:22px}.letter-art{max-width:380px}.letter-art>strong{font-size:34px}.letter-icon{width:48px;height:48px;margin-bottom:18px}.letter-route{margin-top:20px;padding-top:15px;justify-content:space-between}.terminal-art{max-width:430px}.terminal-lines{font-size:13px;padding:23px}.terminal-lines strong{font-size:25px}.payment-art{max-width:370px}.receipt{margin-top:18px;margin-bottom:25px}.card-art{max-width:380px;padding-block:10px}.bank-card{padding:23px}.card-number{font-size:21px}.card-shadow-label{margin-top:35px}.cost-calculator{grid-template-columns:1fr;padding:24px;gap:25px}.cost-total{border-top:1px solid var(--line);padding-top:20px}.cost-total output{font-size:36px}.cost-total small{font-size:11px}.server-art{max-width:360px}.local-device{width:75%;padding:12px 18px}.remote-device{padding:20px 22px}.connection{height:45px}.connection i{height:30px}.hub-intro{padding-block:40px}.hub-intro h1{margin:20px 0}.hub-item{grid-template-columns:45px 1fr 20px;gap:16px;padding-block:25px}.hub-symbol{width:42px;height:42px;font-size:21px;border-radius:12px}.hub-item h2{font-size:23px}.hub-item p{font-size:13px}.hub-item .hub-arrow{font-size:22px}.desktop-break{display:none}.report-note{padding:23px}.image-dialog{padding:12px}.image-hint{right:20px;bottom:20px}.proof figcaption{font-size:11px}}
@media(max-width:370px){.page-wrap,.site-header,.site-footer{width:calc(100% - 32px)}.hero h1{font-size:32px}.hero-object{padding:22px}.hero-actions{align-items:flex-start;flex-direction:column}.button{font-size:13px;padding:12px 17px}.auth-split,.workspace-notes{grid-template-columns:1fr}.auth-split>div+div{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.letter-art>strong{font-size:29px}.letter-route{font-size:10px;gap:9px}.terminal-lines{font-size:11px;padding:20px 15px}.terminal-lines strong{font-size:23px}.card-number{font-size:17px}.card-brand{font-size:10px}.bank-card{padding:18px}.receipt{padding:20px}.receipt>div{font-size:10px}.art-caption{font-size:10px!important}.path-line{gap:5px;font-size:10px}.path-line span{padding:6px}.help-section{padding:24px}.command-row{padding:17px}.command-row button{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}