*,:before,:after{box-sizing:border-box;border:0 solid #e5e7eb}:before,:after{--tw-content:""}html,:host{-webkit-text-size-adjust:100%;tab-size:4;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5}body{line-height:inherit;margin:0}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-feature-settings:normal;font-variation-settings:normal;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-feature-settings:inherit;font-variation-settings:inherit;font-family:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:#0000;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{margin:0;padding:0;list-style:none}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder{opacity:1;color:#9ca3af}textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}[hidden]{display:none}html{-webkit-text-size-adjust:100%}body{-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;line-height:1.65}a{color:#0b5d5d;text-underline-offset:2px}a:hover{text-decoration:underline}*,:before,:after,::backdrop{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:#3b82f680;--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }.static{position:static}.mx-auto{margin-left:auto;margin-right:auto}.mt-1{margin-top:.25rem}.mt-10{margin-top:2.5rem}.mt-12{margin-top:3rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}.mt-6{margin-top:1.5rem}.block{display:block}.inline{display:inline}.flex{display:flex}.grid{display:grid}.contents{display:contents}.w-full{width:100%}.max-w-prose{max-width:720px}.scroll-mt-6{scroll-margin-top:1.5rem}.list-disc{list-style-type:disc}.gap-4{gap:1rem}.space-y-10>:not([hidden])~:not([hidden]){--tw-space-y-reverse:0;margin-top:calc(2.5rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(2.5rem * var(--tw-space-y-reverse))}.space-y-2>:not([hidden])~:not([hidden]){--tw-space-y-reverse:0;margin-top:calc(.5rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(.5rem * var(--tw-space-y-reverse))}.whitespace-pre-line{white-space:pre-line}.break-all{word-break:break-all}.rounded-lg{border-radius:.5rem}.border{border-width:1px}.border-line{--tw-border-opacity:1;border-color:rgb(196 208 203/var(--tw-border-opacity))}.bg-white{--tw-bg-opacity:1;background-color:rgb(255 255 255/var(--tw-bg-opacity))}.px-5{padding-left:1.25rem;padding-right:1.25rem}.px-6{padding-left:1.5rem;padding-right:1.5rem}.py-16{padding-top:4rem;padding-bottom:4rem}.py-4{padding-top:1rem;padding-bottom:1rem}.pl-5{padding-left:1.25rem}.font-serif{font-family:Georgia,Cambria,Times New Roman,serif}.text-3xl{font-size:1.875rem;line-height:2.25rem}.text-base{font-size:1rem;line-height:1.5rem}.text-lg{font-size:1.125rem;line-height:1.75rem}.text-sm{font-size:.875rem;line-height:1.25rem}.text-xl{font-size:1.25rem;line-height:1.75rem}.text-xs{font-size:.75rem;line-height:1rem}.font-medium{font-weight:500}.font-semibold{font-weight:600}.uppercase{text-transform:uppercase}.lowercase{text-transform:lowercase}.not-italic{font-style:normal}.tabular-nums{--tw-numeric-spacing:tabular-nums;font-variant-numeric:var(--tw-ordinal) var(--tw-slashed-zero) var(--tw-numeric-figure) var(--tw-numeric-spacing) var(--tw-numeric-fraction)}.tracking-\[0\.14em\]{letter-spacing:.14em}.tracking-tight{letter-spacing:-.025em}.text-accent{--tw-text-opacity:1;color:rgb(11 93 93/var(--tw-text-opacity))}.text-ink{--tw-text-opacity:1;color:rgb(23 26 28/var(--tw-text-opacity))}.text-muted{--tw-text-opacity:1;color:rgb(138 144 153/var(--tw-text-opacity))}.text-slate{--tw-text-opacity:1;color:rgb(83 96 94/var(--tw-text-opacity))}.underline{text-decoration-line:underline}.underline-offset-2{text-underline-offset:2px}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.filter{filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.marker\:text-muted ::marker{color:#8a9099}.marker\:text-muted::marker{color:#8a9099}@media (min-width:640px){.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:py-24{padding-top:6rem;padding-bottom:6rem}.sm\:text-4xl{font-size:2.25rem;line-height:2.5rem}}
.concept-root,.concept-index{text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;min-height:100dvh;font-family:Avenir Next,Helvetica Neue,Arial,sans-serif;font-size:1rem;line-height:1.55}.concept-root *,.concept-index *{box-sizing:border-box}.concept-root h1,.concept-root h2,.concept-root h3,.concept-index h1,.concept-index h2{text-wrap:balance;margin:0}.concept-root p,.concept-index p{text-wrap:pretty;margin:0}.concept-root a,.concept-index a{color:inherit;text-underline-offset:.2em;text-decoration-thickness:from-font}.concept-root a:focus-visible,.concept-index a:focus-visible{outline:3px solid var(--concept-focus,currentColor);outline-offset:4px}.mark-accent-fill{fill:var(--concept-accent)}.register-mark-ink,.register-mark-stream{fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:8px}.register-mark-ink{stroke:currentColor}.register-mark-stream{stroke:var(--concept-accent,#0e7474)}.register-mark-point{fill:var(--concept-highlight,#b56f3f)}.mark-grid{fill:none;stroke:currentColor;stroke-width:.8px}.mark-channel-cut{fill:var(--concept-dark)}.concept-switcher{z-index:10;border-bottom:1px solid var(--concept-line,#c9cccf);background:color-mix(in srgb, var(--concept-bg,#f3f4f3) 94%, transparent);min-height:4rem;color:var(--concept-muted,#555b60);align-items:center;gap:1rem;padding-inline:clamp(1rem,4vw,4rem);font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem;line-height:1.2;display:flex;position:relative}.concept-switcher a{align-items:center;gap:.45rem;min-height:2.75rem;text-decoration:none;transition:color .12s cubic-bezier(.2,0,0,1),transform .12s cubic-bezier(.2,0,0,1);display:inline-flex}.concept-switcher a:hover,.concept-switcher a[aria-current=page]{color:var(--concept-ink,#101719)}.concept-switcher a:active{transform:translateY(1px)}.concept-switcher-index{font-weight:600;color:var(--concept-ink,#101719)!important}.concept-switcher-rule{background:var(--concept-line,#c9cccf);width:1px;height:1.5rem}.concept-switcher-number{color:var(--concept-accent-text,#7e5533);font-variant-numeric:tabular-nums}.concept-section-heading>p,.countercurrent-record-heading>p{color:var(--concept-muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:.75rem;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem}.concept-section-heading h2,.countercurrent-record-heading h2{letter-spacing:-.035em;max-width:12ch;font-size:clamp(1.875rem,3.2vw,3rem);font-weight:500;line-height:1.08}.concept-section-heading>p.concept-section-lead{max-width:28ch;color:var(--concept-muted);letter-spacing:normal;text-transform:none;text-wrap:pretty;margin-top:1.1rem;margin-bottom:0;font-family:inherit;font-size:1.05rem;font-weight:400;line-height:1.6}.concept-record{border-top:1px solid var(--concept-line);margin:0}.concept-record-row{border-bottom:1px solid var(--concept-line);grid-template-columns:minmax(10rem,.85fr) minmax(0,1.6fr);gap:1.5rem;padding-block:1.25rem;display:grid}.concept-record dt{color:var(--concept-muted);font-size:.875rem}.concept-record dd{color:var(--concept-ink);font-variant-numeric:tabular-nums;margin:0}.concept-record dd a{text-decoration:underline}.concept-products{border-top:1px solid var(--concept-line);grid-template-columns:minmax(12rem,.7fr) minmax(0,1.5fr);gap:clamp(3rem,8vw,8rem);padding-block:clamp(5rem,10vw,9rem);display:grid}.concept-product-list{border-top:1px solid var(--concept-line)}.concept-product{border-bottom:1px solid var(--concept-line);grid-template-columns:minmax(8rem,.55fr) minmax(0,1.45fr);gap:2rem;padding-block:2rem;display:grid}.concept-product-mark{border-radius:.7rem;width:2.75rem;height:2.75rem;margin-bottom:.9rem;display:block;box-shadow:0 1px 3px #171a1c24}.concept-product-heading h3{letter-spacing:-.025em;font-size:1.5rem;font-weight:600}.concept-product-heading a{color:var(--concept-accent-text);margin-top:.5rem;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem;display:inline-block}.concept-product>p{max-width:65ch;color:var(--concept-muted)}.concept-footer{border-top:1px solid var(--concept-line);color:var(--concept-muted);grid-template-columns:1.4fr .8fr auto;align-items:end;gap:2rem;padding:3rem clamp(1.5rem,5vw,5rem);font-size:.75rem;display:grid}.concept-footer-names p+p{margin-top:.35rem}.concept-footer nav{flex-wrap:wrap;gap:1.25rem;display:flex}.concept-footer nav a{align-items:center;min-height:2.75rem;display:inline-flex}.concept-footer>p{font-variant-numeric:tabular-nums}.concept-index{--concept-bg:#d9dad6;--concept-ink:#171a1c;--concept-muted:#5a5f61;--concept-line:#b7bab7;--concept-accent:#0e7474;--concept-accent-text:#0b5d5d;--concept-highlight:#b56f3f;--concept-focus:#0b5d5d;color:var(--concept-ink);background:var(--concept-bg)}.concept-index-shell{width:min(100%,100rem);margin-inline:auto;padding-bottom:4rem}.concept-index-header{border-bottom:1px solid var(--concept-line);grid-template-columns:.65fr 1.6fr .8fr;align-items:end;gap:2rem;padding:clamp(4rem,9vw,8rem) clamp(1.5rem,3vw,3rem) 3rem;display:grid}.concept-index-header>p{letter-spacing:.09em;text-transform:uppercase;align-self:start;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem}.concept-index-header h1{letter-spacing:-.055em;max-width:14ch;font-size:clamp(3rem,6vw,6rem);font-weight:500;line-height:.98}.concept-index-header>span{max-width:34ch;color:var(--concept-muted)}.concept-index-grid{background:var(--concept-line);grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;padding:1px;display:grid}.concept-card{--concept-dark:#101719;color:#171a1c;background:#f6f6f3;grid-template-rows:auto 1fr auto;min-height:44rem;padding:1.5rem;text-decoration:none;transition:transform .2s cubic-bezier(.2,0,0,1),opacity .2s cubic-bezier(.2,0,0,1);display:grid}.concept-card:hover{transform:translateY(-2px)}.concept-card-meta{letter-spacing:.08em;text-transform:uppercase;justify-content:space-between;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem;display:flex}.concept-card-visual{justify-content:center;align-items:center;min-height:18rem;display:flex}.concept-card-mark-register,.concept-card-mark-reference{width:min(10rem,50%)}.concept-card-mark-countercurrent{width:100%}.concept-card-copy{border-top:1px solid;padding-top:2rem}.concept-card-copy h2{letter-spacing:-.035em;font-size:1.875rem;font-weight:600}.concept-card-copy p{min-height:6.5rem;color:color-mix(in srgb, currentColor 68%, transparent);margin-top:1rem}.concept-card-copy span{margin-top:1.5rem;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem;text-decoration:underline;display:inline-block}.concept-card-countercurrent{--concept-accent:#9e6590;--concept-accent-text:#c8a7bd;--concept-dark:#101719;background:var(--concept-dark);color:#f1f3f4}.concept-card-reference{--concept-accent:#c88b32;--concept-accent-text:#7a541c;color:#101719;background:#f0f1ec}.register-root{--concept-bg:#f3f7f4;--concept-surface:#fbfdfb;--concept-ink:#171a1c;--concept-muted:#53605e;--concept-line:#c4d0cb;--concept-accent:#0e7474;--concept-accent-text:#0b5d5d;--concept-accent-soft:#dfede9;--concept-highlight:#b56f3f;--concept-highlight-text:#79472a;--concept-focus:#0b5d5d;color:var(--concept-ink);background:var(--concept-bg)}.register-site-header{border-bottom:1px solid var(--concept-line);background:color-mix(in srgb, var(--concept-bg) 94%, transparent)}.register-site-header-inner{justify-content:space-between;align-items:center;gap:2rem;width:min(100%,92rem);min-height:5rem;margin-inline:auto;padding-inline:clamp(1.5rem,5vw,5rem);display:flex}.register-site-brand{align-items:center;gap:.9rem;min-height:3rem;text-decoration:none;display:inline-flex}.register-site-mark{flex:none;width:3rem}.register-site-wordmark{letter-spacing:-.025em;gap:.1rem;font-size:1rem;font-weight:600;line-height:1.1;display:grid}.register-site-wordmark [lang=ar]{color:var(--concept-accent-text);font-family:Geeza Pro,Tahoma,sans-serif;font-size:.72rem;font-weight:500;line-height:1.4}.register-site-header nav{color:var(--concept-muted);gap:1.5rem;font-size:.875rem;display:flex}.register-site-header nav a{align-items:center;min-height:2.75rem;display:inline-flex}.register-main{width:min(100%,92rem);margin-inline:auto;padding-inline:clamp(1.5rem,5vw,5rem)}.register-hero{grid-template-columns:minmax(0,2fr) minmax(18rem,.9fr);align-items:center;gap:clamp(4rem,8vw,9rem);min-height:46rem;padding-block:clamp(7rem,15vw,12rem) 6rem;display:grid}.register-signature{align-self:center}.register-wordmark{align-items:center;gap:clamp(1.5rem,3vw,3rem);display:flex}.register-mark{flex:none;width:clamp(5rem,9vw,8rem)}.register-name{letter-spacing:-.06em;font-size:clamp(3.25rem,7vw,7rem);font-weight:500;line-height:.92}.register-arabic{font-family:Geeza Pro,Tahoma,sans-serif;font-size:clamp(1.75rem,3vw,3rem);font-weight:500;line-height:1.7;margin-top:1.5rem!important}.register-rule{align-items:center;margin-top:3rem;display:flex}.register-rule:before{background:var(--concept-ink);content:"";transform-origin:0;width:100%;height:2px;animation:.32s cubic-bezier(.2,0,0,1) .12s forwards register-rule-resolve;transform:scaleX(0)}.register-rule-stream{background:var(--concept-accent);flex:none;width:clamp(3rem,7vw,6rem);height:2px;margin-left:.75rem}.register-rule-point{background:var(--concept-highlight);border-radius:2px;flex:none;width:.9rem;height:.9rem;margin-left:.75rem}.register-statement{max-width:52ch;color:var(--concept-muted);font-size:1.125rem;margin-top:2rem!important}.register-rail{background:var(--concept-accent-soft);box-shadow:inset .25rem 0 0 var(--concept-accent);padding:clamp(2.5rem,4vw,4rem)}.register-rail>p:first-child{color:var(--concept-accent-text);letter-spacing:.08em;text-transform:uppercase;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem}.register-rail h1{letter-spacing:-.035em;margin-top:1.25rem;font-size:clamp(1.875rem,3vw,3rem);font-weight:500;line-height:1.08}.register-rail>p:last-child{max-width:36ch;color:var(--concept-muted);margin-top:1.5rem}.register-record-section{border-top:1px solid var(--concept-line);grid-template-columns:minmax(12rem,.7fr) minmax(0,1.5fr);gap:clamp(3rem,8vw,8rem);padding-block:6rem;display:grid}.register-legal-shell{flex-direction:column;min-height:100dvh;display:flex}.register-legal-content{flex:1}.register-legal-shell main h1,.register-legal-shell main h2{font-family:inherit}.register-legal-shell .text-accent{color:var(--concept-accent-text)}.register-legal-shell .bg-white{background:var(--concept-surface)}.register-legal-footer{border-top:1px solid var(--concept-line)}.register-legal-footer-inner{width:min(100%,45rem);color:var(--concept-muted);margin-inline:auto;padding:3rem 1.5rem;font-size:.875rem}.register-footer-signal{background:var(--concept-accent);width:4.5rem;height:.25rem;display:flex}.register-footer-signal span{background:var(--concept-highlight);width:.75rem;margin-left:auto}.register-legal-footer nav{gap:1.5rem;margin-top:1.5rem;display:flex}.register-legal-names{margin-top:1.5rem}.register-legal-names p+p{margin-top:.35rem}.register-legal-copyright{font-variant-numeric:tabular-nums;font-size:.75rem;margin-top:1rem!important}@keyframes register-rule-resolve{to{transform:scaleX(1)}}.countercurrent-root{--concept-bg:#f1f3f4;--concept-surface:#fbfcfc;--concept-dark:#101719;--concept-ink:#101719;--concept-muted:#575e61;--concept-line:#b8bec0;--concept-accent:#7d4a6d;--concept-accent-text:#7d4a6d;--concept-focus:#00566b;color:var(--concept-ink);background:var(--concept-bg)}.countercurrent-root main,.countercurrent-root .concept-footer{width:min(100%,100rem);margin-inline:auto}.countercurrent-hero{padding:clamp(1.5rem,4vw,4rem)}.countercurrent-band{background:var(--concept-dark);color:#f1f3f4;grid-template-rows:auto 1fr auto;min-height:35rem;padding:clamp(1.5rem,4vw,4rem);display:grid}.countercurrent-index,.countercurrent-channel-label{letter-spacing:.08em;text-transform:uppercase;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem}.countercurrent-wordmark{align-self:center;width:100%}.countercurrent-channel{transform-origin:0;animation:.48s cubic-bezier(.2,0,0,1) .1s forwards countercurrent-resolve;transform:scaleX(0)}.countercurrent-channel-label{color:#c8bec5}.countercurrent-intro{border-bottom:1px solid var(--concept-line);grid-template-columns:.4fr 1fr .8fr;gap:clamp(2rem,5vw,5rem);padding-block:clamp(4rem,8vw,8rem);display:grid}.countercurrent-intro>p{color:var(--concept-accent-text);letter-spacing:.08em;text-transform:uppercase;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem}.countercurrent-intro h1{letter-spacing:-.055em;font-size:clamp(3rem,6vw,6rem);font-weight:500;line-height:.98}.countercurrent-intro>div{align-self:end}.countercurrent-intro>div p:first-child{color:var(--concept-ink);font-size:1.125rem}.countercurrent-intro>div p+p{color:var(--concept-muted);margin-top:1.5rem}.countercurrent-record,.countercurrent-products{margin-inline:clamp(1.5rem,4vw,4rem)}.countercurrent-record{border-top:3px solid var(--concept-accent);grid-template-columns:.6fr 1.4fr;gap:clamp(3rem,7vw,7rem);padding-block:clamp(5rem,9vw,9rem);display:grid}@keyframes countercurrent-resolve{to{transform:scaleX(1)}}.reference-root{--concept-bg:#f0f1ec;--concept-surface:#f7f8f4;--concept-dark:#101719;--concept-ink:#101719;--concept-muted:#545b5d;--concept-line:#c6cac4;--concept-accent:#c88b32;--concept-accent-text:#7a541c;--concept-focus:#00566b;color:var(--concept-ink);background:var(--concept-bg);grid-template-columns:6rem minmax(0,1fr);display:grid}.reference-datum{border-right:1px solid var(--concept-line);background:var(--concept-bg);flex-direction:column;justify-content:space-between;align-items:center;height:100dvh;padding-block:1.5rem;display:flex;position:sticky;top:0}.reference-datum>a{display:inline-flex}.reference-datum-mark{width:3rem}.reference-datum nav{writing-mode:vertical-rl;align-items:center;gap:1.75rem;display:flex;transform:rotate(180deg)}.reference-datum nav a{font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem;text-decoration:none}.reference-canvas{background-image:linear-gradient(to right, color-mix(in srgb, var(--concept-line) 42%, transparent) 1px, transparent 1px), linear-gradient(to bottom, color-mix(in srgb, var(--concept-line) 42%, transparent) 1px, transparent 1px);background-size:2rem 2rem;min-width:0}.reference-canvas>main{background:color-mix(in srgb, var(--concept-bg) 92%, transparent);width:min(100%,94rem);margin-inline:auto;padding-inline:clamp(1.5rem,5vw,5rem)}.reference-hero{border-bottom:1px solid var(--concept-line);grid-template-rows:auto 1fr;min-height:47rem;padding-block:clamp(4rem,8vw,7rem) 5rem;display:grid}.reference-identity{align-items:center;gap:1.25rem;display:flex}.reference-mark{flex:none;width:5.5rem}.reference-wordmark{letter-spacing:-.03em;font-size:1.5rem;font-weight:600}.reference-identity>div>p:last-child{color:var(--concept-muted);margin-top:.35rem;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.75rem}.reference-hero-copy{grid-template-columns:.35fr 1.25fr .65fr;align-self:end;align-items:end;gap:clamp(2rem,5vw,5rem);display:grid}.reference-hero-copy>p:first-child{color:var(--concept-accent-text);font-variant-numeric:tabular-nums;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace}.reference-hero-copy h1{letter-spacing:-.065em;font-size:clamp(3.5rem,7.5vw,7.5rem);font-weight:500;line-height:.92}.reference-hero-copy>p:last-child{color:var(--concept-muted);font-size:1.125rem}.reference-record{grid-template-columns:minmax(12rem,.7fr) minmax(0,1.5fr);gap:clamp(3rem,8vw,8rem);padding-block:clamp(6rem,10vw,10rem);display:grid}.reference-point-dot{animation:.26s cubic-bezier(.2,0,0,1) .1s both reference-point-resolve}@keyframes reference-point-resolve{0%{opacity:.45;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}@media (max-width:64rem){.concept-index-header,.countercurrent-intro,.reference-hero-copy{grid-template-columns:1fr 1.6fr}.concept-index-header>span,.countercurrent-intro>div,.reference-hero-copy>p:last-child{grid-column:2}.concept-index-grid{grid-template-columns:1fr}.concept-card{min-height:35rem}.concept-card-visual{min-height:13rem}.concept-card-copy p{min-height:auto}.register-hero{grid-template-columns:1fr;gap:3rem}.register-rail{box-shadow:inset 0 .25rem 0 var(--concept-accent);border-left:0;padding:2.5rem}}@media (max-width:48rem){.concept-switcher{flex-wrap:wrap;gap:.25rem 1rem;padding-block:.75rem}.concept-switcher-rule{display:none}.concept-switcher-index{width:100%;min-height:1.75rem!important}.concept-index-header,.countercurrent-intro,.reference-hero-copy,.concept-products,.register-record-section,.countercurrent-record,.reference-record{grid-template-columns:1fr}.concept-index-header>span,.countercurrent-intro>div,.reference-hero-copy>p:last-child{grid-column:auto}.concept-index-header{align-items:start}.concept-card{min-height:31rem}.concept-record-row,.concept-product{grid-template-columns:1fr;gap:.75rem}.concept-products,.register-record-section,.countercurrent-record,.reference-record{gap:2.5rem}.concept-footer{grid-template-columns:1fr;align-items:start}.register-hero,.reference-hero{min-height:auto}.register-hero{padding-block:5rem}.register-site-header-inner{gap:1rem;min-height:4.5rem}.register-site-mark{width:2.6rem}.register-site-header nav{gap:1rem;font-size:.8125rem}.register-wordmark{align-items:flex-start;gap:1rem}.register-mark{width:3.75rem}.register-name{font-size:clamp(2.5rem,12vw,3.25rem)}.countercurrent-hero{padding:1rem}.countercurrent-band{min-height:24rem}.countercurrent-intro{padding-block:4rem}.reference-root{display:block}.reference-datum{border-right:0;border-bottom:1px solid var(--concept-line);flex-direction:row;width:100%;height:auto;padding:1rem 1.5rem;position:relative}.reference-datum nav{writing-mode:horizontal-tb;flex-direction:row;gap:1rem;transform:none}.reference-datum nav a{align-items:center;min-height:2.75rem;display:inline-flex}.reference-datum-mark{width:2.75rem}.reference-hero{min-height:42rem}.reference-hero-copy{align-self:end}}@media (hover:hover) and (pointer:fine){.concept-root a:hover,.concept-index a:hover{text-decoration:underline}}@media (prefers-reduced-motion:reduce){.register-rule:before,.countercurrent-channel,.reference-point-dot{opacity:1;animation:none;transform:none}.concept-card,.concept-switcher a{transition-duration:.01ms}}html{scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}.site-root{--site-max:68rem}.site-header{z-index:50;background:color-mix(in srgb, var(--concept-bg) 82%, transparent);-webkit-backdrop-filter:saturate(140%)blur(10px);backdrop-filter:saturate(140%)blur(10px);border-bottom:1px solid var(--concept-line);position:sticky;top:0}.site-header-inner{max-width:var(--site-max);justify-content:space-between;align-items:center;gap:1.5rem;margin-inline:auto;padding:1rem clamp(1.25rem,4vw,2.5rem);display:flex}.site-brand{color:var(--concept-ink);align-items:center;gap:.7rem;text-decoration:none;display:inline-flex}.site-brand-mark{flex:none;width:2.2rem;height:2.2rem}.site-brand-word{line-height:1.05;display:grid}.site-brand-word>span:first-child{letter-spacing:-.03em;font-size:1.05rem;font-weight:700}.site-brand-word [lang=ar]{color:var(--concept-accent-text);font-family:Geeza Pro,Tahoma,sans-serif;font-size:.72rem}.site-nav{align-items:center;gap:clamp(1rem,2.4vw,2rem);display:flex}.site-nav-link{color:var(--concept-muted);font-size:.92rem;text-decoration:none;transition:color .18s cubic-bezier(.16,1,.3,1)}.site-nav-link:hover{color:var(--concept-ink)}.site-nav-cta{color:#fff;background:var(--concept-accent);border-radius:999px;padding:.55rem 1.1rem;font-size:.9rem;font-weight:600;text-decoration:none;transition:transform .18s cubic-bezier(.16,1,.3,1),background .18s}.site-nav-cta:hover{background:var(--concept-accent-text);transform:translateY(-1px)}.site-nav-cta:active{transform:translateY(0)scale(.98)}.site-root a.btn-primary,.site-root a.site-nav-cta{color:#fff}@media (max-width:640px){.site-header-inner{gap:.75rem;padding:.7rem 1rem}.site-brand{gap:.55rem;min-width:0;min-height:2.75rem}.site-brand-mark{width:2rem;height:2rem}.site-brand-word>span:first-child{font-size:1rem}.site-brand-word [lang=ar]{font-size:.75rem}.site-nav-link{display:none}.site-nav-cta{white-space:nowrap;align-items:center;min-height:2.75rem;padding:0 1.15rem;font-size:.9rem;display:inline-flex}}.btn{border:1px solid #0000;border-radius:999px;align-items:center;gap:.5rem;padding:.8rem 1.4rem;font-size:.95rem;font-weight:600;text-decoration:none;transition:transform .2s cubic-bezier(.16,1,.3,1),background .2s,border-color .2s,color .2s;display:inline-flex}.btn:active{transform:translateY(0)scale(.985)}.btn-primary{background:var(--concept-accent);color:#fff}.btn-primary:hover{background:var(--concept-accent-text);transform:translateY(-2px)}.btn-primary span{transition:transform .2s cubic-bezier(.16,1,.3,1)}.btn-primary:hover span{transform:translate(3px)}.btn-ghost{color:var(--concept-ink);border-color:var(--concept-line);background:0 0}.btn-ghost:hover{border-color:var(--concept-accent);color:var(--concept-accent-text);transform:translateY(-2px)}.site-main{max-width:var(--site-max);margin-inline:auto;padding-inline:clamp(1.25rem,4vw,2.5rem)}.site-anchor{scroll-margin-top:5rem}.site-section{border-top:1px solid var(--concept-line);padding-block:clamp(3.5rem,8vw,7rem);scroll-margin-top:5rem}.site-hero{grid-template-columns:1.15fr .85fr;align-items:center;gap:clamp(2rem,5vw,4rem);padding-block:clamp(3.5rem,9vw,7.5rem);display:grid}.site-hero-eyebrow{letter-spacing:.14em;text-transform:uppercase;color:var(--concept-accent-text);margin:0 0 1.4rem;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.72rem}.site-hero-wordmark{align-items:center;gap:clamp(1rem,2.5vw,1.75rem);display:flex}.site-hero-mark{flex:none;width:clamp(3.5rem,7vw,5.5rem)}.site-hero-headline{max-width:24ch;color:var(--concept-ink);letter-spacing:-.025em;text-wrap:balance;margin:1.75rem 0 0;font-size:clamp(1.5rem,2.8vw,2.15rem);font-weight:600;line-height:1.2}.site-hero-headline+.site-hero-statement{margin-top:.9rem}.site-hero-statement{max-width:46ch;color:var(--concept-muted);text-wrap:pretty;margin:1.6rem 0 0;font-size:clamp(1.05rem,1.6vw,1.2rem);line-height:1.6}.site-hero-cta{flex-wrap:wrap;gap:.85rem;margin-top:2rem;display:flex}.site-hero-aside{background:var(--concept-surface);border:1px solid var(--concept-line);border-radius:1.1rem;padding:clamp(1.5rem,3vw,2.25rem);box-shadow:0 1px 2px #171a1c0a}.site-hero-aside-label{letter-spacing:.14em;text-transform:uppercase;color:var(--concept-accent-text);margin:0 0 .9rem;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.7rem}.site-hero-aside-body{color:var(--concept-ink);text-wrap:pretty;margin:0;font-size:1.05rem;line-height:1.6}@media (max-width:760px){.site-hero{grid-template-columns:1fr;gap:2.5rem}}.site-company,.site-contact{grid-template-columns:minmax(11rem,.55fr) minmax(0,1.45fr);gap:clamp(2rem,6vw,5rem);display:grid}.site-company-body{gap:1.15rem;max-width:65ch;display:grid}.site-company-body p{color:var(--concept-ink);text-wrap:pretty;margin:0;font-size:1.05rem;line-height:1.7}@media (max-width:760px){.site-company,.site-contact{grid-template-columns:1fr;gap:2rem}}.site-contact-lead{color:var(--concept-muted);max-width:48ch;margin:0;font-size:1.05rem;line-height:1.6}.site-contact-actions{flex-wrap:wrap;gap:.85rem;margin-top:1.6rem;display:flex}.site-contact-detail{gap:1rem;margin:2rem 0 0;display:grid}.site-contact-detail>div{gap:.2rem;display:grid}.site-contact-detail dt{letter-spacing:.1em;text-transform:uppercase;color:var(--concept-muted);font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.7rem}.site-contact-detail dd{color:var(--concept-ink);margin:0;font-size:1.05rem}.site-contact-detail a{color:var(--concept-accent-text);text-decoration:none}.site-contact-detail a:hover{text-decoration:underline}.site-footer{color:#f3f7f4b8;background:#14181a;margin-top:clamp(3rem,8vw,6rem)}.site-footer-inner{max-width:var(--site-max);margin-inline:auto;padding:clamp(3rem,6vw,4.5rem) clamp(1.25rem,4vw,2.5rem) 2.5rem}.site-footer-top{border-bottom:1px solid #f3f7f41f;grid-template-columns:1.4fr .8fr .8fr 1.2fr;gap:clamp(1.5rem,4vw,3rem);padding-bottom:2.5rem;display:grid}.site-footer-brand p{color:#f3f7f48c;max-width:30ch;margin:1rem 0 0;font-size:.9rem;line-height:1.6}.site-footer-lockup{color:#fff;letter-spacing:-.02em;align-items:center;gap:.6rem;font-weight:700;text-decoration:none;display:inline-flex}.site-footer-mark{width:1.9rem;height:1.9rem}.site-footer-col-label{letter-spacing:.14em;text-transform:uppercase;color:#f3f7f494;margin:0 0 1rem;font-family:IBM Plex Mono,SFMono-Regular,Consolas,monospace;font-size:.68rem}.site-footer-col ul{gap:.6rem;margin:0;padding:0;list-style:none;display:grid}.site-footer-col a,.site-footer-contact a{color:#f3f7f4c7;text-decoration:none;transition:color .18s}.site-footer-col a:hover,.site-footer-contact a:hover{color:#4fbfb3}.site-footer-col span{color:#f3f7f480}.site-footer-office address{white-space:pre-line;color:#f3f7f499;font-size:.9rem;font-style:normal;line-height:1.65}.site-footer-contact{white-space:pre-line;margin:.9rem 0 0;font-size:.9rem;line-height:1.8}.site-footer-bottom{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding-top:1.75rem;display:flex}.site-footer-bottom .corporate-legal-name p{margin:0;font-size:.85rem;line-height:1.5}.site-footer-bottom .corporate-legal-name [lang=ar]{color:#f3f7f4d9;font-family:Geeza Pro,Tahoma,sans-serif}.site-footer-bottom .corporate-legal-name [lang=en]{color:#f3f7f499}.site-footer-copyright{color:#f3f7f485;margin:0;font-size:.8rem}@media (max-width:760px){.site-footer-top{grid-template-columns:1fr 1fr;gap:2rem}.site-footer-brand{grid-column:1/-1}}@media (max-width:460px){.site-footer-top{grid-template-columns:1fr}}.site-footer-lockup{--concept-accent:#2e9e9e}
