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b{font-weight:500;color:var(--fg-primary)}.nav{position:sticky;top:0;z-index:50;background:var(--atc-paper);border-bottom:1px solid var(--border-default);backdrop-filter:saturate(160%) blur(8px)}.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);padding:var(--sp-3) var(--container-gutter)}.nav__brand{display:flex;align-items:center;gap:var(--sp-2);font-family:var(--font-display);font-size:1.25rem;letter-spacing:var(--ls-heading);color:var(--fg-primary);text-decoration:none}.nav__brand .tr{color:var(--atc-claude);font-size:.95em}.nav__brand b{font-weight:400}.nav__links{display:flex;gap:var(--sp-6);font-size:var(--fs-body-small)}.nav__links a{color:var(--fg-primary);text-decoration:none;position:relative}.nav__links a:hover{color:var(--atc-signal)}.nav__links .has-caret:after{content:"";display:inline-block;width:.5em;height:.5em;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) 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var(--border-default);padding:5px 10px;border-radius:var(--radius-small);background:var(--atc-paper)}.chip--solid{background:var(--atc-light-gray);border-color:transparent;color:var(--fg-primary)}.chip--claude{background:var(--atc-claude);border-color:transparent;color:var(--atc-paper)}.chip--signal{color:var(--atc-signal);border-color:var(--atc-signal)}.chip--on-dark{background:#faf9f514;border-color:#faf9f533;color:#faf9f5d9}.hero{padding:var(--sp-8) 0 var(--section-pad-large);background:var(--atc-paper);position:relative}.hero__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--sp-7);align-items:end}@media(max-width:960px){.hero__grid{grid-template-columns:1fr;gap:var(--sp-6)}}.hero__title{font-family:var(--font-display);font-size:clamp(2.75rem,5.5vw + .5rem,5.5rem);line-height:1.02;letter-spacing:-.02em;margin:var(--sp-5) 0 var(--sp-6);text-wrap:balance;max-width:16ch}.hero__title em{font-style:italic}.hero__meta{display:flex;flex-wrap:wrap;gap:var(--sp-2);margin-bottom:var(--sp-4)}.hero__lede{font-size:var(--fs-lead);line-height:var(--lh-lead);color:var(--fg-secondary);margin-bottom:var(--sp-6);max-width:44ch;text-wrap:pretty}.hero__ctas{display:flex;gap:var(--sp-3);flex-wrap:wrap}.hero__artefact{background:var(--atc-ink);color:var(--atc-paper);border-radius:var(--radius-main);padding:var(--sp-6);position:relative;min-height:320px;overflow:hidden}.hero__artefact-label{font-family:var(--font-mono);font-size:var(--fs-mono-small);letter-spacing:var(--ls-mono-caps);text-transform:uppercase;color:#faf9f599;display:flex;justify-content:space-between;margin-bottom:var(--sp-4)}.hero__artefact svg{width:100%;height:auto;display:block}.hero__artefact-foot{font-family:var(--font-mono);font-size:var(--fs-mono-small);color:#faf9f599;margin-top:var(--sp-4);display:flex;justify-content:space-between;letter-spacing:.04em}.promise{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border-default);border:1px solid var(--border-default);border-radius:var(--radius-main);overflow:hidden}@media(max-width:900px){.promise{grid-template-columns:1fr}}.promise__item{background:var(--atc-paper);padding:var(--sp-6);display:grid;grid-template-rows:auto auto 1fr auto;gap:var(--sp-4);min-height:280px}.promise__num{font-family:var(--font-mono);font-size:var(--fs-mono-small);letter-spacing:var(--ls-mono-caps);color:var(--atc-claude)}.promise__title{font-family:var(--font-display);font-size:1.625rem;line-height:1.15;letter-spacing:-.01em}.promise__title 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