@font-face{font-family:Archivo Variable;font-style:normal;font-display:swap;font-weight:100 900;font-stretch:62% 125%;src:url(/_astro/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(/_astro/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(/_astro/archivo-latin-wdth-normal.DY7AcnAa.woff2) 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ul{list-style:none;margin:0 0 1rem;padding:0}.menu__panel li a{display:flex;justify-content:space-between;padding:.85rem 0;border-bottom:1px solid rgba(230,238,245,.14);text-decoration:none;font-stretch:100%;font-weight:520}.menu__panel li a span{color:var(--line-2);font-stretch:75%;letter-spacing:.1em;font-size:.8125rem}@media(max-width:960px){.masthead nav,.masthead__cta{display:none}.menu{display:block}.masthead__mark{height:36px}.masthead__word{height:24px}}.sheet{position:relative;max-width:96rem;margin:0 auto;padding:var(--gutter)}.sheet__frame{position:relative;border:2px solid var(--line);outline:1px solid rgba(230,238,245,.45);outline-offset:-9px;padding:var(--sheet-pad)}.zones{position:absolute;inset:0;pointer-events:none}.zones span{position:absolute;font-stretch:72%;font-size:.6875rem;letter-spacing:.18em;color:var(--line-3)}.zones .t,.zones .b{transform:translate(-50%)}.zones .t{top:calc(-1 * var(--gutter) + .4rem)}.zones .b{bottom:calc(-1 * var(--gutter) + .4rem)}.zones .l,.zones .r{transform:translateY(-50%)}.zones .l{left:calc(-1 * var(--gutter) + .35rem)}.zones .r{right:calc(-1 * var(--gutter) + .35rem)}@media(max-width:720px){.zones{display:none}}.hero{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.25fr);grid-template-areas:"head schematic" "spec block" "note block";grid-template-rows:auto 1fr auto;gap:clamp(1.5rem,3vw,3rem) clamp(2rem,5vw,5rem);align-items:start}.hero__head{grid-area:head;container-type:inline-size}.hero h1{font-size:clamp(2.25rem,11.2cqi,6rem)}.hero h1 em{font-style:normal;color:var(--gold)}.hero__lede{margin-top:clamp(1.25rem,2.5vw,2rem);max-width:34ch;font-size:var(--step-1);line-height:1.5;color:var(--line)}.hero__lede 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var(--gold);color:var(--gold);display:grid;place-items:center;font-stretch:100%;font-weight:600;font-size:.9375rem;background:var(--ground);transition:background-color .25s var(--ease-out),color .25s var(--ease-out)}.balloon:after{content:"";position:absolute;top:100%;left:50%;width:var(--rule);height:1rem;background:var(--gold)}.part:hover .balloon,.part[aria-expanded=true] .balloon{background:var(--gold);color:var(--ground-deep)}.part[aria-expanded=true]{background:var(--ground-lift)}.part[aria-expanded=true]:before{border-color:var(--gold)}.schematic[data-active] .part[aria-expanded=false],.schematic[data-active] .base[aria-expanded=false]{opacity:.45}.base-wrap{position:relative}.detail-key{position:absolute;right:-.9rem;top:50%;transform:translateY(-50%);width:2.25rem;height:2.25rem;border-radius:50%;border:var(--rule) solid var(--line);background:var(--ground);display:grid;place-items:center;font-stretch:120%;font-weight:600;font-size:.9375rem;text-decoration:none;z-index:1;transition:border-color .25s var(--ease-out),color .25s var(--ease-out)}.detail-key:hover{border-color:var(--gold);color:var(--gold)}.base{position:relative;appearance:none;font:inherit;color:var(--line);width:100%;margin-top:1.25rem;border:0;padding:.9rem 1rem .9rem 3.75rem;text-align:left;cursor:pointer;background:repeating-linear-gradient(135deg,rgba(230,238,245,.22) 0 1px,transparent 1px 9px),var(--ground);display:flex;align-items:baseline;gap:1rem;flex-wrap:wrap;transition:opacity .35s var(--ease-out)}.base:before{content:"";position:absolute;inset:0;border:var(--rule) solid var(--line);animation:draw-box 1.1s var(--ease-out) both;animation-delay:.75s}.base .balloon{top:50%;left:.75rem;transform:translateY(-50%)}.base .balloon:after{display:none}.base[aria-expanded=true]:before{border-color:var(--gold)}.base:hover .balloon,.base[aria-expanded=true] .balloon{background:var(--gold);color:var(--ground-deep)}.dim{position:relative;display:flex;align-items:center;justify-content:center;margin-top:1.1rem;height:1.25rem;color:var(--line-2);border-inline:1px solid var(--line-2)}.dim:before{content:"";position:absolute;left:1px;right:1px;top:50%;height:9px;transform:translateY(-50%);background:linear-gradient(var(--line-2),var(--line-2)) center / calc(100% - 16px) 1px no-repeat,conic-gradient(from 45deg at 0 50%,var(--line-2) 0 90deg,transparent 0) left center / 8px 9px no-repeat,conic-gradient(from 225deg at 100% 50%,var(--line-2) 0 90deg,transparent 0) right center / 8px 9px no-repeat}.dim span{position:relative;background:var(--ground);padding:0 .75rem}.spec{grid-area:spec;border-top:1px solid rgba(230,238,245,.3);padding-top:1.25rem;min-height:11rem}.spec__panel{animation:rise .45s var(--ease-out) both}.spec__panel[hidden]{display:none}.spec__panel h3{font-size:var(--step-1);font-weight:600;display:flex;align-items:center;gap:.75rem}.mini{flex:none;width:1.75rem;height:1.75rem;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;font-size:.8125rem;font-weight:600;color:var(--line-2)}.spec__panel ul{margin:.75rem 0 0 2.5rem;padding:0;list-style:none;display:grid;gap:.5rem;max-width:52ch}.spec__panel li{padding-left:1.25rem;position:relative;color:var(--line)}.spec__panel li:before{content:"";position:absolute;left:0;top:.72em;width:.6rem;height:1px;background:var(--line-2)}.spec__panel li b{font-weight:600}.titleblock{grid-area:block;border:2px solid var(--line);display:grid;grid-template-columns:1.15fr 1fr 1fr;background:var(--ground)}.titleblock>*{border:1px solid rgba(230,238,245,.35);padding:.7rem .9rem;min-width:0}.titleblock dt{margin-bottom:.15rem}.titleblock dd{margin:0;font-weight:520;line-height:1.3}.titleblock__mark{grid-row:span 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4.25rem;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:relative}.timeline:after{content:"";position:absolute;left:0;right:0;bottom:3rem;height:var(--rule);background:var(--line)}.timeline li{position:relative;padding:0 1.5rem 3.25rem 1.25rem}.timeline li:after{content:"";position:absolute;left:0;top:.4rem;bottom:-1.25rem;width:1px;background:var(--line-2)}.timeline li:before{content:"";position:absolute;bottom:-1.65rem;left:-.4rem;width:.8rem;height:.8rem;border-radius:50%;background:var(--ground);border:var(--rule) solid var(--line);z-index:1}.interval{position:absolute;left:0;right:0;bottom:-4.1rem;text-align:center;color:var(--line-2)}.interval:before{content:"";position:absolute;left:.6rem;right:.6rem;top:-.55rem;height:9px;background:linear-gradient(var(--line-3),var(--line-3)) center / calc(100% - 16px) 1px no-repeat,conic-gradient(from 45deg at 0 50%,var(--line-3) 0 90deg,transparent 0) left center / 8px 9px no-repeat,conic-gradient(from 225deg at 100% 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