:root{--paper:#edeee8;--paper-2:#e4e6de;--paper-3:#d8dbd1;--ink:#11294a;--ink-hover:#0b1d38;--on-ink:#f6f7f2;--text:#16253c;--muted:#5b6a7a;--faint:#8a97a3;--line:#11294a26;--line-strong:#11294a4d;--grid-minor:#11294a0d;--grid-major:#11294a17;--accent:#d0301f;--accent-text:#a82416;--glass:#edeee8d1;--lift:0 1px 2px #11294a12, 0 10px 30px -12px #11294a33;--font-fa:"Vazirmatn", "Geist", system-ui, sans-serif;--font-en:"Geist", "Vazirmatn", system-ui, sans-serif;--font-mono:"Geist Mono", ui-monospace, "Vazirmatn", monospace;--pad:clamp(18px, 4vw, 44px);--s1:6px;--s2:10px;--s3:16px;--s4:24px;--s5:36px;--s6:56px;--s7:88px;--t-display:clamp(2.5rem, 3.2vw + .8rem, 3.9rem);--t-h2:clamp(2rem, 2.5vw + .75rem, 3.1rem);--header-h:68px;--radius:12px;--ease-out:cubic-bezier(.22, 1, .36, 1);--dirx:-1;--scrim:#0a1e37;--on-scrim:#eef4fb;--on-scrim-muted:#a9c0da;--scrim-to:left;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--paper:#0b1f38;--paper-2:#0e2542;--paper-3:#142f4f;--ink:#cfe0f2;--ink-hover:#e8f1fb;--on-ink:#0b1f38;--text:#e4edf7;--muted:#92a6be;--faint:#6b8099;--line:#cfe0f226;--line-strong:#cfe0f24d;--grid-minor:#cfe0f20b;--grid-major:#cfe0f216;--accent:#ff5a3c;--accent-text:#ff8168;--glass:#0b1f38c7;--lift:0 1px 2px #0000003d, 0 12px 32px -12px #0000008c;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}:root[dir=ltr]{--dirx:1;--scrim-to:right}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--text);font-family:var(--font-fa);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:16px;line-height:1.7}:root[lang=en] 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var(--line-strong);direction:ltr;padding-inline-start:10px;font-size:.75rem}.lede{color:var(--muted);max-width:44ch;font-size:1.0625rem}:root[lang=en] .lede{max-width:40ch}.btn{--h:48px;height:var(--h);border:1px solid var(--ink);border-radius:var(--radius);background:var(--ink);color:var(--on-ink);cursor:pointer;white-space:nowrap;transition:background-color .2s ease, border-color .2s ease, transform .25s var(--ease-out), box-shadow .25s ease;justify-content:center;align-items:center;gap:10px;padding-inline:22px;font-size:.9375rem;font-weight:600;display:inline-flex}.btn:hover{background:var(--ink-hover);border-color:var(--ink-hover);box-shadow:var(--lift);transform:translateY(-1px)}.btn:active{box-shadow:none;transform:translateY(0)}.btn-sm{--h:38px;border-radius:10px;padding-inline:16px;font-size:.875rem}.btn-lg{--h:58px;padding-inline:30px;font-size:1.0625rem}.btn-ghost{color:var(--text);border-color:var(--line-strong);background:0 0}.btn-ghost:hover{background:var(--paper-3);border-color:var(--line-strong);box-shadow:none}.btn-arrow{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px;transform:scaleX(var(--dirx));transition:translate .3s var(--ease-out)}.btn:hover .btn-arrow{translate:calc(var(--dirx) * 3px) 0}.icon-btn{border:1px solid var(--line-strong);width:38px;height:38px;color:var(--text);cursor:pointer;background:0 0;border-radius:10px;place-items:center;transition:background-color .2s;display:inline-grid}.icon-btn:hover{background:var(--paper-3)}.icon-btn svg{fill:none;stroke:currentColor;stroke-width:1.7px;stroke-linecap:round;width:18px;height:18px}.theme-toggle .i-sun{display:none}:root[data-theme=dark] .theme-toggle .i-sun{display:block}:root[data-theme=dark] .theme-toggle .i-moon{display:none}.site-header{z-index:50;height:var(--header-h);padding-inline:var(--pad);border-block-end:1px solid #0000;justify-content:space-between;align-items:center;transition:background-color .3s,border-color .3s;display:flex;position:fixed;inset-block-start:0;inset-inline:0}.site-header.is-scrolled{background:var(--glass);-webkit-backdrop-filter:blur(14px)saturate(1.2);backdrop-filter:blur(14px)saturate(1.2);border-block-end-color:var(--line)}.brand{color:var(--text);align-items:center;gap:10px;text-decoration:none;display:inline-flex}.brand-mark{width:30px;height:30px;color:var(--ink)}.brand-word{letter-spacing:0;font-size:1.3125rem;font-weight:700}:root[lang=en] .brand-word{letter-spacing:-.01em;font-weight:600}.header-actions{align-items:center;gap:10px;display:flex}.lang-switch{border:1px solid var(--line-strong);border-radius:10px;height:38px;padding:3px;display:inline-flex}.lang-switch button{min-width:36px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:7px;padding-inline:8px;font-size:.8125rem;font-weight:600;transition:background-color .2s,color .2s}.lang-switch button[lang=en]{font-family:var(--font-en)}.lang-switch button[lang=fa]{font-family:var(--font-fa)}.lang-switch button[aria-pressed=true]{background:var(--ink);color:var(--on-ink)}.lang-switch button:not([aria-pressed=true]):hover{color:var(--text)}.hero{height:460svh;position:relative}.hero-stage{isolation:isolate;background:var(--paper);height:100svh;position:sticky;top:0;overflow:hidden}.hero-canvas{touch-action:pan-y;position:absolute;inset:0}.hero-canvas canvas{width:100%;height:100%;display:block}.hero-stage.is-3d .hero-canvas{cursor:grab}.hero-canvas.is-dragging{cursor:grabbing!important}.hero-labels{pointer-events:none;position:absolute;inset:0}.hero-labels>*{top:0;left:0}.hero-scrim{z-index:1;pointer-events:none;background:linear-gradient(to var(--scrim-to), #0a1e37fa 0%, #0a1e37f7 42%, #0a1e37e6 60%, #0a1e37b3 74%, #0a1e3766 85%, #0a1e3724 93%, #0a1e3700 100%);width:min(760px,52%);-webkit-mask-image:linear-gradient(to bottom, transparent 0, #000 calc(var(--header-h) + 18px));-webkit-mask-image:linear-gradient(to bottom, transparent 0, #000 calc(var(--header-h) + 18px));mask-image:linear-gradient(to bottom, transparent 0, #000 calc(var(--header-h) + 18px));position:absolute;inset-block:0;inset-inline-start:0}.hero-copy{inset-inline-start:0;inset-block:calc(var(--header-h) + 12px) 92px;width:min(560px,46vw);padding-inline:max(var(--pad), 44px) 28px;pointer-events:none;z-index:2;color:var(--on-scrim);align-items:center;display:grid;position:absolute}.cap{opacity:0;visibility:hidden;will-change:opacity, transform;grid-area:1/1}.cap.is-active{pointer-events:auto}.cap-intro h1{font-size:var(--t-display);color:var(--on-scrim);margin-block-end:var(--s4);font-weight:700;line-height:1.16}:root[lang=en] .cap-intro h1{letter-spacing:-.035em;font-weight:600;line-height:1.04}.hero-copy .lede{color:var(--on-scrim-muted);max-width:36ch}.cap-intro .lede{margin-block-end:var(--s5)}.scroll-cue{color:var(--on-scrim-muted);align-items:center;gap:14px;font-size:.8125rem;display:inline-flex}.scroll-mouse{opacity:.8;border:1.5px solid;border-radius:12px;flex:none;width:23px;height:37px;position:relative}.scroll-mouse i{inset-inline-start:50%;width:3px;height:7px;animation:scroll-wheel 1.9s var(--ease-out) infinite;background:currentColor;border-radius:2px;margin-inline-start:-1.5px;position:absolute;top:7px}@keyframes scroll-wheel{0%{opacity:0;transform:translateY(0)}18%{opacity:1}70%,to{opacity:0;transform:translateY(14px)}}.cap-step .step-num{font-family:var(--font-mono);color:var(--on-scrim-muted);margin-block-end:14px;font-size:.875rem;font-weight:500;display:block}.cap-step .step-num:after{content:"";vertical-align:middle;opacity:.5;background:currentColor;width:44px;height:1px;margin-inline-start:12px;display:inline-block}.cap-step .step-num--accent{color:var(--accent)}.cap-step h2,.cap-end h2{font-size:var(--t-h2);color:var(--on-scrim);margin-block-end:var(--s3);line-height:1.15}:root[lang=en] .cap-step h2,:root[lang=en] .cap-end h2{letter-spacing:-.03em;font-weight:600;line-height:1.05}.cap-step p,.cap-end p{color:var(--on-scrim-muted);max-width:34ch;font-size:1.0625rem}.cap-end p{margin-block-end:var(--s4)}.cap-end .btn{background:var(--on-scrim);border-color:var(--on-scrim);color:var(--scrim)}.cap-end .btn:hover{background:#fff;border-color:#fff}.drag-hint{inset-block-end:34px;left:var(--model-x,50%);border:1px solid var(--line);background:var(--glass);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--muted);opacity:0;pointer-events:none;z-index:2;border-radius:999px;align-items:center;gap:8px;padding:8px 14px;font-size:.8125rem;transition:opacity .5s;display:inline-flex;position:absolute;transform:translate(-50%)}.drag-hint svg{fill:none;stroke:currentColor;stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round;width:16px;height:16px}.hero-stage.is-3d .drag-hint:not(.is-used){opacity:1}.hero-progress{z-index:3;background:#0a1e3729;height:3px;position:absolute;inset-block-end:0;inset-inline:0}.hero-progress i{background:var(--accent);height:100%;transform-origin:var(--prog-origin,right);display:block;transform:scaleX(0)}:root[dir=ltr] .hero-progress i{--prog-origin:left}.room-label{background:color-mix(in srgb, var(--paper) 86%, transparent);color:var(--ink);white-space:nowrap;opacity:0;border-radius:6px;flex-direction:column;align-items:center;gap:0;padding:3px 8px 4px;font-size:.75rem;line-height:1.35;display:flex}.room-label .rl-name{font-weight:600;display:block}.room-label .rl-area{font-family:var(--font-mono);color:var(--accent);font-size:.6875rem}:root[lang=fa] .room-label .rl-area{font-family:var(--font-fa)}.dim-label{font-family:var(--font-mono);color:var(--ink);opacity:0;font-size:.6875rem}:root[lang=fa] .dim-label{font-family:var(--font-fa)}.dim-label span{background:var(--paper);padding:0 4px;line-height:1.3;display:inline-block}.dim-label.is-v span{transform:rotate(-90deg)}.sheet{isolation:isolate;position:relative}.sheet:before{content:"";z-index:-1;background-image:linear-gradient(var(--grid-major) 1px, transparent 1px), linear-gradient(90deg, var(--grid-major) 1px, transparent 1px), linear-gradient(var(--grid-minor) 1px, transparent 1px), linear-gradient(90deg, var(--grid-minor) 1px, transparent 1px);background-position:top;background-size:120px 120px,120px 120px,24px 24px,24px 24px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#0000,#000 320px calc(100% - 200px),#0000);mask-image:linear-gradient(#0000,#000 320px calc(100% - 200px),#0000)}.section{padding-block:clamp(96px,12vw,168px);scroll-margin-block-start:var(--header-h)}.section-head{margin-block-end:clamp(40px,5vw,64px)}.section-head h2,.cta h2,.faq-head h2{font-size:var(--t-h2);max-width:20ch;margin-block-end:var(--s3);line-height:1.22}:root[lang=en] .section-head h2,:root[lang=en] .cta h2,:root[lang=en] .faq-head h2{letter-spacing:-.03em;font-weight:600;line-height:1.08}.reveal{opacity:0;transition:opacity .9s var(--ease-out), transform .9s var(--ease-out);transform:translateY(24px)}.reveal.is-in{opacity:1;transform:none}.video-frame{max-width:1020px;margin-inline:auto;padding-block-start:var(--s5);padding-inline-end:34px;position:relative}.video-placeholder{aspect-ratio:16/9;border:1px solid var(--line-strong);background-color:var(--paper-2);background-image:linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);background-position:50%;background-size:48px 48px;border-radius:4px;place-content:center;justify-items:center;gap:10px;display:grid;position:relative;overflow:hidden}.video-placeholder:before,.video-placeholder:after{content:"";pointer-events:none;background:linear-gradient(to top right, transparent calc(50% - .5px), var(--line) calc(50% - .5px), var(--line) calc(50% + .5px), transparent calc(50% + .5px));position:absolute;inset:0}.video-placeholder:after{transform:scaleX(-1)}.video-placeholder>*{z-index:1;position:relative}.play{border:1px solid var(--ink);background:var(--paper);width:84px;height:84px;color:var(--ink);cursor:not-allowed;border-radius:50%;place-items:center;margin-block-end:10px;display:grid}.play svg{fill:currentColor;width:28px;height:28px;margin-inline-start:4px}:root[dir=rtl] .play svg{margin-inline:0 4px;transform:none}.vp-title{background:var(--paper-2);padding:0 10px;font-size:1.0625rem;font-weight:600}.vp-note{font-family:var(--font-mono);color:var(--muted);background:var(--paper-2);padding:0 10px;font-size:.75rem}:root[lang=fa] .vp-note{font-family:var(--font-fa)}.crop{border:0 solid var(--ink);width:18px;height:18px;position:absolute}.crop-tl{border-top-width:1.5px;border-left-width:1.5px;top:10px;left:10px}.crop-tr{border-top-width:1.5px;border-right-width:1.5px;top:10px;right:10px}.crop-bl{border-bottom-width:1.5px;border-left-width:1.5px;bottom:10px;left:10px}.crop-br{border-bottom-width:1.5px;border-right-width:1.5px;bottom:10px;right:10px}.dim{color:var(--ink);font-family:var(--font-mono);justify-content:center;align-items:center;font-size:.6875rem;display:flex;position:absolute}.dim:before{content:"";background:var(--line-strong);position:absolute}.dim span{background:var(--paper);padding:0 8px;position:relative}.dim-x{top:4px;border-inline:1px solid var(--line-strong);height:14px;inset-inline:0 34px}.dim-x:before{inset-inline:0;height:1px;top:50%}.dim-y{top:30px;bottom:0;border-block:1px solid var(--line-strong);width:14px;inset-inline-end:6px}.dim-y:before{inset-block:0;width:1px;left:50%}.dim-y span{white-space:nowrap;transform:rotate(-90deg)}.cta{text-align:center;flex-direction:column;align-items:center;padding-block:clamp(64px,8vw,110px);display:flex;position:relative}.cta-section .container{max-width:1180px}.cta:before{content:"";inset:0;inset-inline:var(--pad);border:1px solid var(--line-strong);background:var(--paper-2);z-index:-1;border-radius:4px;position:absolute}.cta h2{max-width:18ch}.cta .lede{margin-block-end:var(--s5);margin-inline:auto}.cta-meta{color:var(--muted);flex-wrap:wrap;justify-content:center;gap:8px 22px;margin:26px 0 0;padding:0;font-size:.8125rem;list-style:none;display:flex}.cta-meta li{align-items:center;gap:8px;display:inline-flex}.cta-meta li:before{content:"";border:1px solid var(--ink);width:5px;height:5px;transform:rotate(45deg)}.keys{direction:ltr;gap:6px;display:flex;position:absolute;inset-block-start:26px;inset-inline-end:calc(var(--pad) + 26px)}.keys kbd,.walk kbd{border:1px solid var(--line-strong);min-width:26px;height:26px;color:var(--ink);background:var(--paper);border-block-end-width:2px;border-radius:6px;place-items:center;padding:0 6px;font-size:.6875rem;display:inline-grid}.cta:after{content:"";background:linear-gradient(var(--ink), var(--ink)) center / 13px 1px no-repeat, linear-gradient(var(--ink), var(--ink)) center / 1px 13px no-repeat;width:13px;height:13px;position:absolute;inset-block-start:-7px;inset-inline-start:calc(var(--pad) - 7px)}.faq{grid-template-columns:minmax(0,1fr) minmax(0,1.55fr);align-items:start;gap:clamp(32px,6vw,96px);display:grid}.faq-head{top:calc(var(--header-h) + 32px);position:sticky}.faq-head h2{max-width:12ch}.faq-list{border-block-start:1px solid var(--line-strong)}.faq-item{border-block-end:1px solid var(--line-strong)}.faq-item summary{cursor:pointer;justify-content:space-between;align-items:center;gap:24px;padding-block:24px;font-size:1.0625rem;font-weight:600;list-style:none;transition:color .2s;display:flex}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:hover{color:var(--ink)}.plus{border:1px solid var(--line-strong);border-radius:8px;flex:none;width:28px;height:28px;position:relative}.plus:before,.plus:after{content:"";width:11px;height:1.5px;transition:transform .35s var(--ease-out);background:currentColor;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.plus:after{transform:translate(-50%,-50%)rotate(90deg)}.faq-item.is-open .plus:after{transform:translate(-50%,-50%)rotate(0)}.faq-item.is-open .plus{border-color:var(--ink);color:var(--ink)}.faq-a{overflow:hidden}.faq-a p{color:var(--muted);max-width:60ch;padding-block-end:var(--s4)}.site-footer{border-block-start:1px solid var(--line);padding-block:var(--s5)}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px;display:flex}.footer-brand{align-items:center;gap:12px;display:flex}.footer-brand div{flex-direction:column;line-height:1.4;display:flex}.footer-brand span{color:var(--muted);font-size:.8125rem}.footer-links{gap:22px;font-size:.875rem;display:flex}.footer-links a{color:var(--muted);text-decoration:none;transition:color .2s}.footer-links a:hover{color:var(--text)}.footer-copy{color:var(--faint);font-size:.8125rem}.walk{z-index:100;background:var(--paper);touch-action:none;-webkit-user-select:none;user-select:none;position:fixed;inset:0;overflow:hidden}.walk-canvas{position:absolute;inset:0}.walk-canvas canvas{width:100%;height:100%;display:block}.walk-top{padding:16px var(--pad);pointer-events:none;z-index:3;grid-template-columns:1fr auto 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var(--line);border-radius:var(--radius);background:var(--glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:3;gap:8px;padding:14px 16px;font-size:.8125rem;transition:opacity .6s;display:grid;position:absolute;inset-block-end:var(--pad);inset-inline-start:var(--pad)}.walk-help.is-faded{opacity:0}.wh-row{align-items:center;gap:12px;display:flex}.wh-k{direction:ltr;justify-content:flex-start;gap:4px;min-width:124px;display:inline-flex}:root[dir=rtl] .wh-k{justify-content:flex-end}.wh-touch,.walk.is-touch .wh-keys{display:none}.walk.is-touch .wh-touch{display:flex}.walk-map{border:1px solid var(--line);border-radius:var(--radius);background:var(--glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:3;padding:10px;position:absolute;inset-block-end:var(--pad);inset-inline-end:var(--pad)}.walk-map canvas{width:210px;height:160px;display:block}.walk-map small{color:var(--muted);font-size:.625rem;position:absolute;inset-block-start:8px;inset-inline-start:12px}.walk-joy{border:1px solid var(--line-strong);background:var(--glass);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:3;border-radius:50%;width:124px;height:124px;display:none;position:absolute;inset-block-end:calc(var(--pad) + 8px);inset-inline-start:var(--pad)}.walk-joy i{background:var(--ink);opacity:.85;border-radius:50%;width:50px;height:50px;margin:-25px 0 0 -25px;position:absolute;top:50%;left:50%}.walk.is-touch .walk-joy{display:block}.walk.is-touch .walk-help{inset-block:76px auto}.walk.is-touch .walk-map{inset-block:76px auto;inset-inline-end:var(--pad)}.walk.is-touch .walk-map canvas{width:150px;height:114px}.walk.is-touch .walk-help{display:none}.walk-gate{padding:var(--pad);background:color-mix(in srgb, var(--paper) 50%, transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:5;cursor:pointer;place-items:center;transition:opacity .35s;display:grid;position:absolute;inset:0}.walk-gate.is-hidden{opacity:0;pointer-events:none}.gate-card{text-align:center;border:1px solid var(--line-strong);background:var(--paper);width:min(380px,100%);box-shadow:var(--lift);cursor:default;border-radius:16px;justify-items:center;gap:10px;padding:34px 30px 28px;display:grid}.gate-logo{width:40px;height:40px;color:var(--ink);margin-block-end:4px}.gate-title{font-size:1.375rem}.gate-desc{color:var(--muted);margin-block-end:12px;font-size:.9375rem}.gate-actions{gap:10px;display:flex}@media (width<=859px),(aspect-ratio<=21/20){.hero-copy{inset-block:calc(var(--header-h) + 4px) auto;inset-inline:var(--pad);align-items:start;width:auto}.cap-intro h1{margin-block-end:14px;font-size:clamp(2rem,7.4vw,3rem)}.cap-intro .lede{margin-block-end:18px;font-size:.975rem}.cap-step h2,.cap-end h2{margin-block-end:8px;font-size:clamp(1.8rem,6.5vw,2.6rem)}.cap-step p,.cap-end p{font-size:.975rem}.cap-end p{margin-block-end:16px}.hero-scrim{width:auto;height:min(74%,560px);-webkit-mask-image:linear-gradient(to bottom, transparent 0, #000 calc(var(--header-h) + 10px));-webkit-mask-image:linear-gradient(to bottom, transparent 0, #000 calc(var(--header-h) + 10px));mask-image:linear-gradient(to bottom, transparent 0, #000 calc(var(--header-h) + 10px));background:linear-gradient(#0a1e37fa 0%,#0a1e37f5 44%,#0a1e37cc 64%,#0a1e3770 80%,#0a1e3724 92%,#0a1e3700 100%);inset-block:0 auto;inset-inline:0}.hero-copy{padding-inline:var(--pad);width:auto}.scroll-cue{gap:10px}.drag-hint{inset-block-end:46px}}@media (width<=859px){.faq{grid-template-columns:1fr}.faq-head{position:static}.keys{display:none}.video-frame{padding-inline-end:26px}}@media (width<=520px){.site-header .btn-sm,.scroll-cue-label,.walk-brand span,.walk-exit kbd{display:none}}@media (prefers-reduced-motion:reduce){.scroll-mouse i{opacity:1;animation:none}.reveal{opacity:1;transform:none}}