@font-face{font-family:Archivo Variable;font-style:normal;font-display:swap;font-weight:100 900;font-stretch:62% 125%;src:url(/assets/archivo-vietnamese-wdth-normal-rJmnGBSt.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Archivo Variable;font-style:normal;font-display:swap;font-weight:100 900;font-stretch:62% 125%;src:url(/assets/archivo-latin-ext-wdth-normal-7khWdh9v.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Archivo Variable;font-style:normal;font-display:swap;font-weight:100 900;font-stretch:62% 125%;src:url(/assets/archivo-latin-wdth-normal-DY7AcnAa.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--cherry: #761b37;--cherry-deep: #4e1124;--cherry-soft: #9a3b59;--mineral: #f4dee6;--mineral-soft: #faeff3;--cold: #fcfcfd;--plum: #291821;--alu: #bec7d0;--alu-soft: #e9edf1;--text: var(--plum);--text-2: #5b4651;--line: rgba(41, 24, 33, .16);--focus: var(--cherry);--font: "Archivo Variable", "Archivo", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--gutter: clamp(20px, 5vw, 64px);--max: 1240px;--radius: 6px;--radius-lg: 14px;--ease-out: cubic-bezier(.2, .8, .2, 1);--ease-fold: cubic-bezier(.65, 0, .35, 1);--fs-body: clamp(1rem, .96rem + .2vw, 1.125rem);--fs-h2: clamp(2rem, 1.2rem + 3.4vw, 4.25rem)}.on-cherry{--focus: var(--cold)}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:16px}body{margin:0;overflow-wrap:break-word;background:var(--cold);color:var(--text);font-family:var(--font);font-size:var(--fs-body);line-height:1.55;font-stretch:100%;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0}ul,ol{padding:0;list-style:none}img,svg{display:block;max-width:100%}a{color:inherit}button{font:inherit;color:inherit}:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:3px}.skip{position:absolute;left:12px;top:-80px;z-index:100;padding:10px 16px;background:var(--plum);color:var(--cold);border-radius:var(--radius);text-decoration:none;font-weight:600}.skip:focus{top:12px;outline-color:var(--cold)}.inner{width:100%;max-width:calc(var(--max) + var(--gutter) * 2);margin-inline:auto;padding-inline:var(--gutter)}.section{padding-block:clamp(72px,10vw,144px);scroll-margin-top:0}.h2{font-weight:800;font-stretch:78%;font-size:var(--fs-h2);line-height:.96;letter-spacing:-.03em;text-wrap:balance}.h2>span{display:block}.lead{font-size:clamp(1.0625rem,1rem + .45vw,1.375rem);line-height:1.5;color:var(--text-2);max-width:34em;margin-top:1.25rem}.note{font-size:.875rem;line-height:1.45;max-width:34em}.btn{--btn-bg: transparent;--btn-fg: currentColor;--btn-bd: currentColor;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.7rem 1.4rem;border:2px solid var(--btn-bd);border-radius:var(--radius);background:var(--btn-bg);color:var(--btn-fg);font-weight:700;font-stretch:92%;letter-spacing:-.005em;line-height:1.15;text-align:center;text-decoration:none;cursor:pointer;transition:background-color .2s,color .2s,border-color .2s,transform .2s var(--ease-out)}.btn:active{transform:translateY(1px)}.btn--primary{--btn-bg: var(--cherry);--btn-fg: var(--cold);--btn-bd: var(--cherry)}.btn--primary:hover{--btn-bg: var(--cherry-deep);--btn-bd: var(--cherry-deep)}.btn--on-cherry-solid{--btn-bg: var(--cold);--btn-fg: var(--cherry);--btn-bd: var(--cold)}.btn--on-cherry-solid:hover{--btn-bg: var(--mineral);--btn-bd: var(--mineral)}.btn--on-cherry{--btn-bg: var(--mineral);--btn-fg: var(--plum);--btn-bd: var(--mineral)}.btn--on-cherry:hover{--btn-bg: var(--cold);--btn-bd: var(--cold)}.btn--ghost{--btn-bd: var(--text);--btn-fg: var(--text)}.btn--ghost:hover{--btn-bg: var(--plum);--btn-fg: var(--cold)}.btn--small{min-height:44px;padding:.5rem 1rem;font-size:.9375rem}.btn--outline{--btn-bd: var(--plum);--btn-fg: var(--plum)}.btn--outline:hover,.btn--outline[aria-expanded=true]{--btn-bg: var(--plum);--btn-fg: var(--cold)}.btn--solid{--btn-bg: var(--cherry);--btn-fg: var(--cold);--btn-bd: var(--cherry)}.btn--solid:hover:not(:disabled){--btn-bg: var(--cherry-deep);--btn-bd: var(--cherry-deep)}.btn--solid:disabled{--btn-bg: var(--alu-soft);--btn-fg: var(--text-2);--btn-bd: var(--alu);cursor:not-allowed}.btn--quiet{--btn-bd: transparent;text-decoration:underline;text-underline-offset:4px;padding-inline:.75rem}.btn--quiet:hover{text-decoration-thickness:2px}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.001ms!important;animation-delay:0s!important;transition-duration:.001ms!important}}.header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding:20px var(--pad)}.wordmark{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-stretch:88%;font-size:1.5rem;letter-spacing:-.045em;line-height:1}.header__nav{display:none;gap:28px;font-weight:500;font-size:.9375rem}.header__nav a{text-decoration:none;padding:8px 2px;border-bottom:2px solid transparent}.header__nav a:hover{border-bottom-color:currentColor}.header__tools{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.header__cta{display:none}@media (min-width: 560px){.header__cta{display:inline-flex}}@media (min-width: 900px){.header__nav{display:flex}}.lang{display:inline-flex;border:2px solid currentColor;border-radius:var(--radius);overflow:hidden}.lang__btn{min-width:44px;min-height:40px;padding:0 10px;background:transparent;border:0;cursor:pointer;font-weight:700;font-size:.8125rem;letter-spacing:.04em}.lang__btn[aria-pressed=true]{background:var(--mineral);color:var(--plum)}.lang__btn:focus-visible{outline-offset:-4px}.hero{--pad: max(var(--gutter), calc((100cqw - var(--max)) / 2));--rise: 56px;container-type:inline-size;position:relative;background:var(--cherry);color:var(--cold)}.hero__title-wrap{padding:clamp(16px,3vw,40px) var(--pad) 0}.hero__title{font-weight:800;font-stretch:75%;font-size:clamp(2.5rem,.6rem + 7vw,7.5rem);line-height:.9;letter-spacing:-.04em;text-wrap:balance}.hero__title span{display:block}.hero__lower{position:relative;display:grid;grid-template-columns:minmax(0,1fr);padding-inline:var(--pad);margin-top:24px;row-gap:0}.hero__lower>*{position:relative;z-index:1}.hero__lower>.hero__light{z-index:0;grid-column:1 / -1;grid-row:3 / 6;margin-inline:calc(var(--pad) * -1);background:var(--mineral);color:var(--text)}.hero__desc,.hero__actions,.hero__piece,.hero__support,.hero__stage{grid-column:1}.hero__desc{grid-row:1}.hero__actions{grid-row:2;padding-bottom:var(--rise)}.hero__piece{grid-row:3;margin-top:calc(var(--rise) * -1);justify-self:center;width:min(100%,440px)}.hero__support{grid-row:4;color:var(--text);padding-top:8px}.hero__stage{grid-row:5;color:var(--text);padding-block:20px 56px}.hero__pill{display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;padding:4px 12px 4px 10px;border:1.5px solid currentColor;border-radius:99px;color:var(--mineral);font-size:.875rem;font-weight:700}.hero__pill:before{content:"";width:9px;height:9px;background:currentColor;clip-path:polygon(0 0,100% 30%,70% 100%,10% 80%)}.hero__descriptor{font-weight:700;font-stretch:88%;font-size:clamp(1.25rem,1rem + 1.2vw,1.875rem);line-height:1.15;letter-spacing:-.02em;color:var(--mineral);padding-bottom:20px}.hero__support p{font-size:clamp(1rem,.96rem + .3vw,1.1875rem);line-height:1.5;max-width:30em}.hero__buttons{display:flex;flex-wrap:wrap;gap:12px}.hero__buttons .btn--ghost{--btn-bd: var(--cold);--btn-fg: var(--cold)}.hero__buttons .btn--ghost:hover{--btn-bg: var(--cold);--btn-fg: var(--cherry)}.hero__actions .note{margin-top:14px;color:var(--mineral)}.stage__title{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.9375rem;margin-bottom:12px}.stage__title:before{content:"";width:10px;height:10px;background:var(--cherry);clip-path:polygon(0 0,100% 30%,70% 100%,10% 80%)}.stage__list{display:grid;gap:0;border-left:2px solid var(--cherry)}.stage__list li{display:flex;flex-wrap:wrap;gap:2px 14px;padding:6px 0 6px 14px;font-size:.9375rem;line-height:1.35;color:var(--text-2)}.stage__list li strong{flex:0 0 7.5rem}.stage__list li span{flex:1 1 11rem}.stage__list strong{color:var(--text);font-weight:700}.stage__list li[data-now=true] strong{color:var(--cherry)}@media (min-width: 900px){.hero{--rise: clamp(190px, 22cqw, 320px)}.hero__title-wrap{padding-bottom:calc(var(--rise) + 4px)}.hero__lower{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr) minmax(0,1fr);grid-template-rows:auto auto 1fr;column-gap:clamp(20px,3vw,48px);margin-top:0}.hero__lower>.hero__light{grid-row:1 / 4}.hero__desc{grid-column:1;grid-row:1;padding-top:clamp(28px,3.5vw,56px)}.hero__pill{color:var(--cherry)}.hero__descriptor{color:var(--cherry);max-width:11em;font-size:clamp(1.375rem,.7rem + 1.6vw,2.25rem);padding-bottom:0}.hero__piece{grid-column:2;grid-row:1 / 4;width:120%;justify-self:center}.hero__support{grid-column:1;grid-row:2;align-self:start;padding-top:14px}.hero__actions{grid-column:3;grid-row:1 / 3;padding:clamp(28px,3.5vw,56px) 0 0;color:var(--text)}.hero__buttons .btn--ghost{--btn-bd: var(--plum);--btn-fg: var(--plum)}.hero__buttons .btn--ghost:hover{--btn-bg: var(--plum);--btn-fg: var(--cold)}.hero__buttons .btn--on-cherry-solid{--btn-bg: var(--cherry);--btn-fg: var(--cold);--btn-bd: var(--cherry)}.hero__buttons .btn--on-cherry-solid:hover{--btn-bg: var(--cherry-deep);--btn-bd: var(--cherry-deep)}.hero__actions .note{color:var(--text-2)}.hero__stage{grid-column:3;grid-row:3;align-self:start;padding-block:20px 56px}}.sculpture{position:relative;container-type:inline-size;aspect-ratio:600 / 640;width:100%}.sculpture__svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;filter:drop-shadow(0 22px 28px rgba(41,24,33,.28))}.sculpture__facet,.sculpture__ghost{transform-box:fill-box;transform-origin:center}.sculpture__facet{animation:fold-in 1.15s var(--ease-fold) backwards;animation-delay:calc(var(--i, 0) * 38ms + .12s)}.sculpture__ghost{animation:ghost-in 1.4s var(--ease-out) .9s backwards}@keyframes fold-in{0%{opacity:0;transform:translate(var(--dx, 0),var(--dy, 0)) rotate(var(--r, 0deg)) scale(.82)}60%{opacity:1}to{opacity:1;transform:none}}@keyframes ghost-in{0%{opacity:0;transform:rotate(0) translate(0)}}.chip{--chip-bg: var(--cold);--chip-fg: var(--plum);position:absolute;z-index:2;display:grid;gap:1px;max-width:44%;padding:.42em .7em .5em;background:var(--chip-bg);color:var(--chip-fg);border:1px solid rgba(41,24,33,.28);border-radius:3px;font-size:clamp(11px,2.35cqw,15px);font-weight:700;font-stretch:90%;line-height:1.15;letter-spacing:-.01em;box-shadow:0 6px 14px #29182138;animation:chip-in .9s var(--ease-out) backwards}.chip__tag{font-size:.78em;font-weight:600;letter-spacing:.01em;opacity:.78}.chip--data{--chip-bg: var(--cold);border-color:var(--alu)}.chip--a{left:1%;top:66%;transform:rotate(-5deg);animation-delay:.9s;--cx: -36px;--cy: 24px}.chip--b{left:9%;top:79%;transform:rotate(3deg);animation-delay:1.05s;--cx: -30px;--cy: 34px}.chip--rule{--chip-bg: var(--plum);--chip-fg: var(--mineral);left:14%;top:46.5%;max-width:44%;border-color:var(--plum);animation-delay:1.65s;--cx: 0px;--cy: 30px}.chip--decision{--chip-bg: var(--mineral);left:59%;top:11.5%;max-width:38%;border-color:var(--cold);box-shadow:0 10px 22px #2918214d;animation-delay:2.25s;--cx: 24px;--cy: -30px}@keyframes chip-in{0%{opacity:0;translate:var(--cx, 0) var(--cy, 0)}}@media (max-width: 899px){.sculpture__svg{filter:drop-shadow(0 14px 18px rgba(41,24,33,.24))}}.problem{background:var(--cold)}.problem__grid{display:grid;gap:clamp(36px,5vw,72px) clamp(32px,6vw,96px)}.problem .lead{max-width:28em}.problem__board{position:relative;display:grid;gap:18px;padding-block:8px;min-height:24rem}.problem__rail{position:absolute;left:18px;top:6px;bottom:52px;width:3px;background:var(--cherry);transform:scaleY(0);transform-origin:top;transition:transform .9s var(--ease-fold) .5s}.frag{position:relative;background:var(--cold);border:1px solid var(--alu);border-radius:var(--radius);padding:14px 18px 16px;box-shadow:0 10px 24px #29182114;transition:transform .9s var(--ease-fold),margin .9s var(--ease-fold),box-shadow .6s;max-width:30rem}.frag__where{font-size:.8125rem;color:var(--text-2)}.frag__label{font-weight:700;font-size:.9375rem;color:var(--cherry);margin-bottom:6px}.frag__row{display:flex;justify-content:space-between;gap:16px;font-weight:600;padding-top:6px;border-top:1px solid var(--line)}.frag__num{font-variant-numeric:tabular-nums}.frag__text{font-weight:600;background:var(--mineral);padding:8px 10px;border-left:4px solid var(--cherry)}.frag__bubble{background:var(--plum);color:var(--cold);padding:10px 14px;border-radius:14px 14px 14px 2px;font-weight:600;width:fit-content;max-width:100%}.problem__board[data-joined=false] .frag{margin-right:34px}.problem__board[data-joined=false] .frag--inventory{transform:translate(-6px,4px) rotate(-2.2deg)}.problem__board[data-joined=false] .frag--rule{transform:translate(26px,10px) rotate(1.8deg);margin-top:14px}.problem__board[data-joined=false] .frag--query{transform:translate(8px,22px) rotate(-1.2deg);margin-top:22px}.problem__board[data-joined=true] .frag{margin-left:40px;box-shadow:0 2px 0 var(--line)}.problem__board[data-joined=true] .problem__rail{transform:scaleY(1)}.problem__joined{min-height:3em;margin-left:40px;font-weight:600;color:var(--cherry);max-width:28em}.problem__closing{font-weight:700;font-stretch:85%;font-size:clamp(1.375rem,1rem + 1.6vw,2.25rem);line-height:1.12;letter-spacing:-.02em;max-width:24em;padding-top:24px;border-top:3px solid var(--plum)}@media (min-width: 900px){.problem__grid{grid-template-columns:minmax(0,6fr) minmax(0,5fr);align-items:start}.problem__closing{grid-column:1 / -1}.problem__board{padding-top:28px}}.system{background:var(--cold);border-top:1px solid var(--line)}.system__flow{position:relative;margin-top:clamp(40px,6vw,72px)}.strip{position:absolute;pointer-events:none}.strip--h{display:none;left:0;right:0;top:0;width:100%;height:30px}.strip--v{left:0;top:0;bottom:0;width:26px;height:100%}.system__list{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding-left:46px}.cap{position:relative}.cap__node{position:absolute;left:-37px;top:6px;width:16px;height:16px;background:var(--mineral);border:3px solid var(--plum);transform:rotate(45deg)}.cap__title{font-weight:800;font-stretch:80%;font-size:clamp(1.625rem,1.2rem + 1.3vw,2.25rem);line-height:1;letter-spacing:-.025em}.cap__tag{display:inline-block;margin-top:10px;padding:2px 10px;border:1.5px solid var(--cherry);border-radius:99px;color:var(--cherry);font-size:.8125rem;font-weight:700}.cap__text{margin-top:14px;max-width:26em}.sample{margin-top:20px;background:var(--alu-soft);border-radius:var(--radius);padding:14px 16px 16px;border-top:4px solid var(--cherry)}.sample__cap{font-size:.8125rem;color:var(--text-2);margin-bottom:8px}.sample dl{display:grid;gap:8px}.sample__row{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.6fr);overflow-wrap:anywhere;gap:2px 12px;font-size:.9375rem;line-height:1.35}.sample__row dt{color:var(--text-2);font-weight:600}.sample__row dd{font-weight:600}.sample__row--src{grid-template-columns:minmax(0,.9fr) minmax(0,.8fr) minmax(0,1fr);align-items:baseline}.sample__flag{font-size:.8125rem;font-weight:700!important;color:var(--cherry)}.sample__row[data-stale] dd:nth-of-type(1){text-decoration:line-through;text-decoration-thickness:2px;color:var(--text-2)}.sample__row[data-stale] .sample__flag{color:var(--text-2)}.sample__note{margin-top:10px;font-size:.875rem;color:var(--text-2)}@media (min-width: 900px){.strip--h{display:block}.strip--v{display:none}.system__list{grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,3vw,48px);padding-left:0;padding-top:64px}.cap__node{left:0;top:-46px;width:18px;height:18px}}.distinction{margin-top:clamp(56px,8vw,104px);padding-top:32px;border-top:3px solid var(--plum)}.distinction__title{font-weight:800;font-stretch:80%;font-size:clamp(1.625rem,1rem + 2.4vw,3rem);line-height:1;letter-spacing:-.03em;max-width:16em;text-wrap:balance}.distinction__pair{display:grid;margin-top:28px;border-radius:var(--radius-lg);overflow:hidden}.dist{padding:22px 24px 26px}.dist--rules{background:var(--mineral)}.dist--data{background:var(--alu-soft)}.dist__k{font-weight:800;font-stretch:85%;font-size:clamp(1.25rem,1rem + 1vw,1.75rem);line-height:1.1;letter-spacing:-.02em}.dist--rules .dist__k{color:var(--cherry)}.dist__v{margin-top:8px;color:var(--text-2)}@media (min-width: 760px){.distinction__pair{grid-template-columns:1fr 1fr}.dist--data{clip-path:polygon(18px 0,100% 0,100% 100%,0 100%);margin-left:-18px;padding-left:42px}}.build{background:var(--plum);color:var(--cold);--focus: var(--cold)}.build .lead{color:var(--mineral)}.flow{margin-top:clamp(40px,6vw,72px);display:grid;grid-template-columns:minmax(0,1fr);gap:16px}.flow__step{position:relative;padding:20px 20px 22px;border:1px solid rgba(244,222,230,.28);border-radius:var(--radius);background:#f4dee60d}.flow__n{display:inline-grid;place-items:center;width:30px;height:30px;margin-bottom:14px;background:var(--mineral);color:var(--plum);font-weight:800;clip-path:polygon(0 0,100% 12%,88% 100%,6% 88%)}.flow__k{font-weight:800;font-stretch:82%;font-size:clamp(1.375rem,1.1rem + .8vw,1.75rem);line-height:1.05;letter-spacing:-.02em;margin-bottom:8px}.flow__step p{color:var(--mineral);font-size:.9375rem;line-height:1.45}.build__cols{margin-top:clamp(48px,7vw,88px);display:grid;gap:40px clamp(32px,6vw,96px)}.build__k{font-weight:700;color:var(--mineral);padding-bottom:10px;border-bottom:2px solid var(--cherry-soft);margin-bottom:14px}.build__audience{font-weight:700;font-stretch:88%;font-size:clamp(1.25rem,1rem + 1vw,1.75rem);line-height:1.2;letter-spacing:-.015em}.roadmap li{display:flex;justify-content:space-between;align-items:flex-start;gap:8px 16px;flex-wrap:wrap;padding:14px 0;border-bottom:1px solid rgba(244,222,230,.2)}.roadmap__k{font-weight:700}.roadmap__v{font-size:.9375rem;color:var(--mineral)}.roadmap__s{flex:none;padding:3px 12px;border:1.5px solid var(--mineral);border-radius:99px;font-size:.8125rem;font-weight:700}.roadmap__s[data-done=true]{background:var(--mineral);color:var(--plum)}@media (min-width: 900px){.flow{grid-template-columns:repeat(4,minmax(0,1fr));gap:0}.flow__step{border-radius:0;border-left-width:0}.flow__step:first-child{border-left-width:1px;border-radius:var(--radius) 0 0 var(--radius)}.flow__step:last-child{border-radius:0 var(--radius) var(--radius) 0}.flow__step:not(:last-child):after{content:"";position:absolute;right:-9px;top:28px;width:16px;height:16px;background:var(--plum);border-top:1px solid rgba(244,222,230,.6);border-right:1px solid rgba(244,222,230,.6);transform:rotate(45deg);z-index:1}.build__cols{grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:start}}.trust{background:var(--alu-soft)}.trust__grid{display:grid;gap:48px clamp(32px,6vw,96px)}.trust__intro{margin-top:28px;color:var(--text-2);font-weight:600}.principles{margin-top:8px;border-top:3px solid var(--plum)}.principles li{padding:18px 0;border-bottom:1px solid var(--line);font-weight:700;font-stretch:88%;font-size:clamp(1.1875rem,1rem + 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