.i540{--i540-ink:#171717;--i540-muted:#666;--i540-line:#d8d8d8;--i540-soft:#f5f5f2;--i540-red:#a61d24;color:var(--i540-ink)}
.i540 *{box-sizing:border-box}.i540 a{color:inherit}.i540-hero,.i540-reading,.i540-trust{width:min(1180px,calc(100% - 40px));margin-inline:auto}.i540-hero{padding:76px 0 48px}.i540-kicker,.i540-module figcaption>span,.i540-handoff figcaption,.i540-login figcaption>span{font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--i540-red)}
.i540-hero h1{max-width:980px;margin:18px 0 16px;font-size:clamp(3rem,7vw,6.7rem);line-height:.92;letter-spacing:-.055em}.i540-dek{max-width:870px;font-size:clamp(1.35rem,2.5vw,2.1rem);line-height:1.18;margin:0 0 24px}.i540-thesis{max-width:790px;font-size:1.04rem;line-height:1.65;color:#3e3e3e;border-left:3px solid var(--i540-red);padding-left:18px}.i540-meta{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;padding-top:18px;border-top:1px solid var(--i540-line);font-size:.84rem;color:var(--i540-muted)}
.i540-hero-gate{margin:58px 0 0;border-top:1px solid var(--i540-ink);border-bottom:1px solid var(--i540-ink);padding:22px 0 26px}.i540-hero-gate figcaption{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.75fr);gap:24px;align-items:end}.i540-hero-gate figcaption span{font-size:clamp(1.35rem,3vw,2.4rem);font-weight:850;letter-spacing:-.035em}.i540-hero-gate figcaption small{font-size:.86rem;line-height:1.55;color:var(--i540-muted)}.i540-capability-field{display:grid;grid-template-columns:repeat(4,1fr);list-style:none;padding:0;margin:28px 0 0;border-top:8px solid var(--i540-ink)}.i540-capability-field li{padding:14px 12px 6px;border-left:1px solid var(--i540-line)}.i540-capability-field li:last-child{border-right:1px solid var(--i540-line)}.i540-capability-field span{display:block;color:var(--i540-muted);font-size:.72rem}.i540-capability-field strong{font-size:.92rem}.i540-gates{display:grid;grid-template-columns:repeat(7,1fr);list-style:none;padding:18px 0 0;margin:18px 0 0;border-top:1px solid var(--i540-line)}.i540-gates li{position:relative;padding:22px 8px 0;text-align:center}.i540-gates li span{position:absolute;left:50%;top:-19px;width:2px;height:34px;background:var(--i540-red)}.i540-gates strong{font-size:.72rem;letter-spacing:.04em;text-transform:uppercase}
.i540-reading{max-width:900px;padding-bottom:70px}.i540-section{padding:58px 0;border-top:1px solid var(--i540-line)}.i540-section:first-child{border-top:0}.i540-section>h2{display:grid;grid-template-columns:42px 1fr;gap:14px;margin:0 0 24px;font-size:clamp(1.8rem,4vw,3rem);line-height:1.02;letter-spacing:-.035em}.i540-section>h2 span{font-size:.72rem;letter-spacing:.08em;color:var(--i540-red);padding-top:8px}.i540-prose>p,.i540-prose>blockquote,.i540-prose>ul,.i540-prose>ol{max-width:720px;margin-left:auto;margin-right:auto}.i540-prose p{font-size:1.08rem;line-height:1.75;margin-top:0;margin-bottom:1.15em}.i540-prose blockquote{font-size:clamp(1.35rem,2.5vw,2rem);line-height:1.35;font-weight:760;letter-spacing:-.02em;border-left:4px solid var(--i540-red);padding:8px 0 8px 24px;margin-top:34px;margin-bottom:34px}.i540-prose ul,.i540-prose ol{line-height:1.65}
.i540-module{margin:48px -80px 8px;padding:28px;border:1px solid var(--i540-line);background:#fff}.i540-module figcaption{display:grid;gap:6px;margin-bottom:24px}.i540-module figcaption strong{font-size:clamp(1.45rem,3vw,2.25rem);letter-spacing:-.03em}.i540-module figcaption p{margin:0;max-width:720px;color:var(--i540-muted);line-height:1.55}
.i540-lanes>ol{list-style:none;padding:0;margin:0;border-top:1px solid var(--i540-ink)}.i540-lanes>ol li{display:grid;grid-template-columns:52px 1.25fr 1fr 1fr .9fr;gap:12px;align-items:center;padding:16px 0;border-bottom:1px solid var(--i540-line)}.i540-lanes li>span{color:var(--i540-red);font-weight:800}.i540-lanes li p,.i540-lanes li small{margin:0;font-size:.86rem;color:var(--i540-muted)}
.i540-timeline>ol{display:grid;grid-template-columns:repeat(5,1fr);list-style:none;padding:0;margin:0;border-top:2px solid var(--i540-ink)}.i540-timeline li{position:relative;padding:26px 14px 0;border-left:1px solid var(--i540-line)}.i540-timeline li:last-child{border-right:1px solid var(--i540-line)}.i540-timeline li:before{content:"";position:absolute;top:-7px;left:12px;width:12px;height:12px;background:var(--i540-ink)}.i540-timeline li.is-interruption:before{background:var(--i540-red);width:16px;height:16px;top:-9px}.i540-timeline time{display:block;color:var(--i540-muted);font-size:.72rem;letter-spacing:.07em}.i540-timeline strong{display:block;margin-top:5px}.i540-timeline p{font-size:.8rem;line-height:1.45;color:var(--i540-muted);margin:8px 0 0}
.i540-opportunity>ol{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;list-style:none;padding:1px;margin:0;background:var(--i540-line)}.i540-opportunity li{min-height:112px;background:#fff;padding:14px;display:flex;flex-direction:column;justify-content:space-between}.i540-opportunity li span{font-size:.68rem;color:var(--i540-red);font-weight:800}.i540-opportunity li strong{font-size:.92rem}.i540-opportunity blockquote{margin:26px 0 0;border-top:1px solid var(--i540-ink);padding:22px 0 0;font-size:1.15rem;font-weight:760}
.i540-handoff{margin:20px -80px 0;padding:24px 28px;border-left:4px solid var(--i540-red);background:var(--i540-soft)}.i540-handoff ol{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;list-style:none;padding:0;margin:16px 0}.i540-handoff li{position:relative;padding:15px;border:1px solid var(--i540-line);background:#fff}.i540-handoff li:not(:last-child):after{content:"→";position:absolute;right:-17px;top:50%;transform:translateY(-50%);font-weight:900}.i540-handoff li span{display:block;color:var(--i540-red);font-size:.68rem}.i540-handoff p{margin:0;color:var(--i540-muted);font-size:.85rem}
.i540-tension>div{display:grid;grid-template-columns:1fr 52px 1fr;gap:14px;align-items:stretch}.i540-tension section{border-top:5px solid var(--i540-ink);padding-top:14px}.i540-tension section:last-child{border-color:var(--i540-red)}.i540-tension section>span{font-size:.74rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.i540-tension ul{list-style:none;padding:0;margin:14px 0 0}.i540-tension li{padding:10px 0;border-top:1px solid var(--i540-line)}.i540-tension i{display:grid;place-items:center;font-style:normal;font-size:1.4rem}
.i540-login{margin:52px -80px 30px;padding:30px 0;border-top:1px solid var(--i540-ink);border-bottom:1px solid var(--i540-ink)}.i540-login figcaption{display:grid;gap:4px;margin-bottom:22px}.i540-login figcaption small{color:var(--i540-muted);max-width:720px;line-height:1.5}.i540-login>div{display:grid;grid-template-columns:1fr 5px 1fr;gap:0;border:1px solid var(--i540-line)}.i540-login section{padding:28px;background:#fff}.i540-login section span{display:block;font-size:.7rem;color:var(--i540-muted);letter-spacing:.08em}.i540-login section strong{display:block;margin-top:10px;font-size:clamp(1.4rem,3vw,2.3rem);letter-spacing:-.03em}.i540-login i{background:var(--i540-red)}.i540-final-lines{max-width:720px;margin:36px auto 0}.i540-final-lines p{font-size:clamp(1.45rem,3vw,2.25rem);line-height:1.22;font-weight:780;letter-spacing:-.025em;margin:.25em 0}.i540-final-lines p:last-child{color:var(--i540-red)}
.i540-trust{padding:40px 0 80px;border-top:1px solid var(--i540-line)}
@media (max-width:900px){.i540-module,.i540-handoff,.i540-login{margin-left:0;margin-right:0}.i540-hero-gate figcaption{grid-template-columns:1fr}.i540-gates{grid-template-columns:repeat(4,1fr);row-gap:22px}.i540-opportunity>ol{grid-template-columns:repeat(2,1fr)}.i540-timeline>ol{grid-template-columns:1fr}.i540-timeline li{padding:18px 0 18px 24px;border-left:2px solid var(--i540-line);border-right:0!important}.i540-timeline li:before{left:-7px;top:22px}.i540-timeline li.is-interruption:before{left:-9px;top:20px}.i540-lanes>ol li{grid-template-columns:42px 1fr}.i540-lanes li p,.i540-lanes li small{grid-column:2}.i540-handoff ol{grid-template-columns:1fr}.i540-handoff li:not(:last-child):after{content:"↓";right:auto;left:50%;top:auto;bottom:-20px}.i540-tension>div{grid-template-columns:1fr}.i540-tension i{transform:rotate(90deg)}}
@media (max-width:640px){.i540-hero,.i540-reading,.i540-trust{width:min(100% - 28px,1180px)}.i540-hero{padding-top:44px}.i540-hero h1{font-size:clamp(2.8rem,15vw,4.4rem)}.i540-capability-field{grid-template-columns:1fr}.i540-capability-field li{border-left:1px solid var(--i540-line);border-right:1px solid var(--i540-line);border-bottom:1px solid var(--i540-line)}.i540-gates{grid-template-columns:repeat(2,1fr)}.i540-section>h2{grid-template-columns:32px 1fr}.i540-prose p{font-size:1rem}.i540-opportunity>ol{grid-template-columns:1fr}.i540-login>div{grid-template-columns:1fr}.i540-login i{height:5px}.i540-meta{display:grid;gap:7px}}
@media (prefers-reduced-motion:reduce){.i540 *{scroll-behavior:auto!important}}
[data-effective-theme="dark"] .i540{--i540-ink:#f2f2ed;--i540-muted:#b8b8b2;--i540-line:#494944;--i540-soft:#252522;color:var(--i540-ink)}[data-effective-theme="dark"] .i540-module,[data-effective-theme="dark"] .i540-opportunity li,[data-effective-theme="dark"] .i540-handoff li,[data-effective-theme="dark"] .i540-login section{background:#1c1c1a}[data-effective-theme="dark"] .i540-thesis{color:#d0d0c9}