.arch{--arch-bg:#050c1a;--arch-ink:#e4ebf8;--arch-muted:#93a6c6;--arch-rule:rgba(118,156,228,0.22);--arch-accent:#3f7dff;--arch-accent-deep:#1f63db;--arch-accent-ink:#ffffff;--arch-hot:#8ee8ff;--arch-italic:#9fc4ff;--arch-card:rgba(7,16,34,0.84);--arch-card-border:rgba(110,150,230,0.26);--arch-shadow:0 24px 60px rgba(0,0,0,0.45);--arch-label:#7590c0;--arch-label-strong:#c3d4f2;--arch-dot:rgba(147,166,198,0.4);--arch-veil:radial-gradient(ellipse at center,rgba(5,12,26,0.35),rgba(5,12,26,0.82));position:relative;min-height:100vh;min-height:100dvh;background:var(--arch-bg);color:var(--arch-ink);font-family:var(--font-sans),ui-sans-serif,system-ui,sans-serif;font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}.arch[data-theme=light]{--arch-bg:#f6f5f0;--arch-ink:#17243b;--arch-muted:#5f6878;--arch-rule:#d9dde3;--arch-accent:#244de0;--arch-accent-deep:#18349c;--arch-accent-ink:#ffffff;--arch-hot:#18349c;--arch-italic:#244de0;--arch-card:rgba(255,255,252,0.92);--arch-card-border:#d9dde3;--arch-shadow:0 24px 60px rgba(23,36,59,0.12);--arch-label:#6a7690;--arch-label-strong:#17243b;--arch-dot:rgba(23,36,59,0.22);--arch-veil:radial-gradient(ellipse at center,rgba(246,245,240,0.3),rgba(246,245,240,0.85))}.arch *,.arch :after,.arch :before{box-sizing:border-box}.arch :where(h1,h2,h3,p){margin:0}.arch :where(a){color:inherit;text-decoration:none}.arch :where(button){font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}.arch :focus-visible{outline:2px solid var(--arch-hot);outline-offset:3px}.arch-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.arch-kicker{font-family:var(--font-mono),ui-monospace,monospace;font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--arch-accent)}.arch[data-theme=dark] .arch-kicker{color:var(--arch-hot)}.arch-accent{font-family:Georgia,Times New Roman,serif;font-style:italic;font-weight:400;color:var(--arch-italic);letter-spacing:-.01em}.arch-bar{position:fixed;inset:0 0 auto;z-index:30;display:flex;align-items:center;gap:14px;height:56px;padding:0 max(20px,env(safe-area-inset-right)) 0 max(20px,env(safe-area-inset-left));background:linear-gradient(to bottom,var(--arch-bg) 30%,transparent)}.arch[data-mode=text] .arch-bar{background:var(--arch-bg);border-bottom:1px solid var(--arch-rule)}.arch-brand{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-weight:600;letter-spacing:-.02em;font-size:17px}.arch .arch-brand>span:first-child{color:var(--arch-accent)}.arch-bar__rule{width:1px;height:18px;background:var(--arch-rule)}.arch-bar__title{font-family:var(--font-mono),ui-monospace,monospace;font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--arch-muted);white-space:nowrap}.arch-bar__actions{display:flex;align-items:center;gap:6px;margin-left:auto}.arch-icon-button{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid transparent;border-radius:999px;background:transparent;color:var(--arch-muted);transition:background .2s,color .2s}.arch-icon-button:hover{background:var(--arch-rule);color:var(--arch-ink)}.arch-lang{font-family:var(--font-mono),ui-monospace,monospace;font-size:11.5px;font-weight:600;letter-spacing:.08em}.arch-back{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border:1px solid var(--arch-card-border);border-radius:999px;font-size:13px;color:var(--arch-ink);transition:background .2s}.arch-back:hover{background:var(--arch-rule)}.arch-stage{position:fixed;inset:0;overflow:hidden}.arch-scene{position:absolute;inset:0;z-index:0;isolation:isolate}.arch-canvas{display:block;width:100%;height:100%;cursor:grab}.arch-canvas:active{cursor:grabbing}.arch-labels{position:absolute;inset:0;pointer-events:none}.arch-scene-loading{position:absolute;inset:0;display:grid;place-items:center;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--arch-muted)}.arch-label,.arch-scene-loading{font-family:var(--font-mono),ui-monospace,monospace}.arch-label{display:flex;flex-direction:column;gap:2px;padding:0 9px;font-size:10.5px;line-height:1.3;white-space:nowrap;color:var(--arch-label);text-shadow:0 0 6px var(--arch-bg),0 0 2px var(--arch-bg)}.arch-label__title{font-weight:600;letter-spacing:.15em;text-transform:uppercase;color:var(--arch-label-strong);transition:color .4s}.arch-label--minor .arch-label__title{font-weight:500;letter-spacing:.08em;color:var(--arch-label)}.arch-label__detail{font-size:10px;letter-spacing:.04em}.arch-label.is-hot .arch-label__title{color:var(--arch-hot)}.arch-labels[data-overview=true] .arch-label__detail{display:none}@media (min-width:1180px){.arch-labels[data-overview=true] .arch-label__detail{display:block}}.arch-card{position:absolute;left:24px;bottom:24px;z-index:10;display:flex;flex-direction:column;gap:18px;width:min(420px,calc(100vw - 48px));padding:24px 24px 18px;border:1px solid var(--arch-card-border);border-radius:14px;background:var(--arch-card);box-shadow:var(--arch-shadow);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:opacity .35s,transform .35s}.arch-card[data-hidden=true]{opacity:0;transform:translateY(12px);pointer-events:none}.arch-card__content{display:flex;flex-direction:column;gap:10px;animation:arch-rise .4s ease-out both}.arch-card h2{margin:2px 0;font-size:25px;font-weight:500;line-height:1.15;letter-spacing:-.02em}.arch-card p:not(.arch-kicker),.arch-text p:not(.arch-kicker){color:var(--arch-muted)}.arch-card strong,.arch-text strong{font-weight:600;color:var(--arch-ink)}.arch-card__nav{display:flex;flex-direction:column;gap:10px}.arch-dots{display:flex;margin:0 -4px;padding:0;list-style:none}.arch-dots li{flex:1}.arch-dots button{position:relative;display:block;width:100%;height:28px;padding:0;border:0;background:transparent}.arch-dots button:before{content:"";position:absolute;top:50%;left:50%;width:7px;height:7px;border-radius:999px;background:var(--arch-dot);transform:translate(-50%,-50%);transition:width .3s,background .3s}.arch-dots button:hover:before{background:var(--arch-muted)}.arch-dots button[aria-current=step]:before{width:22px;background:var(--arch-accent)}.arch-card__buttons{display:flex;justify-content:space-between;gap:10px}.arch-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:0 18px;border:1px solid var(--arch-card-border);border-radius:8px;background:transparent;font-size:14px;font-weight:500;transition:background .2s,border-color .2s,opacity .2s}.arch-button:hover:not(:disabled){background:var(--arch-rule)}.arch-button:disabled{opacity:.4;cursor:default}.arch-button--primary{border-color:var(--arch-accent);background:var(--arch-accent);color:var(--arch-accent-ink)}.arch-button--primary:hover:not(:disabled){border-color:var(--arch-accent-deep);background:var(--arch-accent-deep)}.arch-cta{display:inline-flex;align-self:flex-start;align-items:center;gap:12px;min-height:44px;margin-top:6px;padding:0 18px;border-radius:8px;background:var(--arch-ink);color:var(--arch-bg);font-size:14px;font-weight:600;transition:transform .2s}.arch-cta:hover{transform:translateY(-1px)}.arch-link{min-height:44px;padding:0 4px;border:0;background:transparent;color:var(--arch-muted);font-size:14px;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--arch-rule)}.arch-link:hover{color:var(--arch-ink)}.arch-hint{font-family:var(--font-mono),ui-monospace,monospace;font-size:10.5px;letter-spacing:.04em;color:var(--arch-muted);opacity:.8}.arch-hint kbd{padding:1px 5px;border:1px solid var(--arch-card-border);border-radius:4px;font-family:inherit;font-size:10px}.arch-intro{position:absolute;inset:0;z-index:20;display:grid;place-items:center;padding:72px 16px 24px;background:var(--arch-veil);animation:arch-fade .5s ease-out both}.arch-intro__card{display:flex;flex-direction:column;gap:14px;width:min(480px,100%);padding:32px;border:1px solid var(--arch-card-border);border-radius:16px;background:var(--arch-card);box-shadow:var(--arch-shadow);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}.arch-intro__card h2{font-size:clamp(30px,6vw,40px);font-weight:500;line-height:1.08;letter-spacing:-.03em}.arch-intro__card>p:not(.arch-kicker){color:var(--arch-muted)}.arch-intro__actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;margin-top:8px}.arch-text{width:min(720px,100%);margin:0 auto;padding:104px 16px 96px}.arch-text__title{margin-top:12px;font-size:clamp(34px,6vw,52px);font-weight:500;line-height:1.05;letter-spacing:-.03em}.arch-text__lede{margin-top:14px;font-size:17px}.arch-text__steps{display:flex;flex-direction:column;gap:0;margin:48px 0 0;padding:0;list-style:none}.arch-text__steps li{display:flex;flex-direction:column;gap:10px;padding:28px 0;border-top:1px solid var(--arch-rule);scroll-margin-top:80px}.arch-text__steps h3{font-size:24px;font-weight:500;line-height:1.2;letter-spacing:-.02em}.arch-text__end{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;padding-top:28px;border-top:1px solid var(--arch-rule)}@keyframes arch-rise{0%{opacity:0;transform:translateY(6px)}}@keyframes arch-fade{0%{opacity:0}}@media (prefers-reduced-motion:reduce){.arch-card,.arch-card__content,.arch-dots button:before,.arch-intro,.arch-label__title{animation:none;transition:none}}@media (max-width:479px){.arch-bar__title{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}}@media (max-width:719px){.arch-bar{gap:10px;padding:0 8px 0 16px}.arch-back span,.arch-bar__rule{display:none}.arch-back{width:44px;padding:0;justify-content:center;border-color:transparent;color:var(--arch-muted)}.arch-bar__title{min-width:0;overflow:hidden;text-overflow:ellipsis}.arch-card{left:0;right:0;bottom:0;width:auto;height:min(48dvh,420px);gap:12px;padding:18px 16px calc(10px + env(safe-area-inset-bottom));border-width:1px 0 0;border-radius:18px 18px 0 0}.arch-card__body{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain}.arch-card h2{font-size:22px}.arch-card p:not(.arch-kicker){font-size:14.5px}.arch-dots button{height:44px}.arch-card__nav{gap:2px}.arch-card__buttons .arch-button{flex:1}.arch-hint{display:none}.arch-label{padding:0 6px}.arch-label,.arch-label__detail{font-size:9px}.arch-labels[data-overview=true] .arch-label--minor{display:none!important}.arch-intro__card{padding:24px 20px}}