/* Engineering information design. Shared tokens and site behavior are inherited unchanged. */
.engineering-exploration .site-nav { position: sticky; top: 0; }
.engineering-exploration .nav-links [aria-current="page"] { text-decoration: underline; text-decoration-color: var(--orange); text-underline-offset: 7px; }
.engineering-exploration h1, .engineering-exploration h2, .engineering-exploration h3, .engineering-exploration h4, .engineering-exploration p { color: var(--dark); }
.engineering-exploration h2 { font-size: clamp(36px,3.2vw,46px); font-weight: 650; letter-spacing: -.045em; line-height: 1.08; margin: 17px 0 24px; }
.engineering-exploration h3 { font-size: 25px; letter-spacing: -.025em; font-weight: 650; line-height: 1.2; }
.technical-label { font-size: 12px; font-weight: 650; letter-spacing: .1em; text-transform: uppercase; color: var(--dark); }
.engineering-hero { padding: 58px 0 60px; }
.engineering-proposition h1 { font-size: clamp(52px,4.3vw,62px); font-weight: 650; letter-spacing: -.055em; line-height: 1.02; margin: 17px 0 23px; }
.engineering-proposition .lead { max-width: 830px; margin-bottom: 30px; }
.engineering-context { margin-top: 34px; padding: 24px 30px 27px; background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.engineering-context-row { display: flex; align-items: center; gap: 34px; }
.engineering-context-row ul { display: flex; flex-wrap: wrap; gap: 10px 28px; list-style: none; margin: 0; padding: 0; font-size: 16px; color: var(--dark); }
.engineering-context-statement { max-width: 900px; margin: 24px 0 0; padding-top: 22px; border-top: 1px solid var(--line); font-size: 27px; line-height: 1.35; letter-spacing: -.025em; font-weight: 550; }






.engineering-movement { padding: 82px 0; scroll-margin-top: 74px; }.engineering-system { background: var(--paper); }.system-lead { max-width: 875px; font-size: 18px; line-height: 1.6; }
.system-composition { margin: 38px 0 0; }.system-enclosure { position: relative; min-height: 365px; border: 1px solid var(--dark); padding: 30px 35px; background: var(--white); }
.system-enclosure::before { content: ''; position: absolute; top: 77px; left: 15%; right: 6%; bottom: 43px; border: 1px solid var(--line); border-left: 2px solid var(--orange); }
.system-enclosure::after { content: ''; position: absolute; left: 24%; right: 10%; top: 137px; bottom: 98px; border-bottom: 1px solid var(--dark); border-right: 1px solid var(--dark); pointer-events: none; }
.system-enclosure strong { display: block; font-size: 22px; font-weight: 600; letter-spacing: -.02em; }.system-enclosure span:not(.reasoning-mark) { color: var(--dark); font-size: 15px; }.system-human { position: relative; z-index: 1; display: inline-block; background: white; padding-right: 15px; }
.system-context { position: absolute; top: 98px; left: 18%; z-index: 1; background: white; padding: 0 15px; }.system-reasoning { position: absolute; left: 30%; top: 185px; right: 15%; display: grid; grid-template-columns: 55px 1fr; z-index: 2; background: white; padding: 8px 15px; }.system-reasoning .reasoning-mark { grid-row: span 2; font-size: 48px; line-height: 1; color: var(--orange); }.system-validation { position: absolute; left: 18%; bottom: 21px; background: white; padding: 0 15px; z-index: 1; }
.engineering-mix { display: grid; grid-template-columns: .75fr 1fr 1fr; gap: 55px; padding-top: 33px; margin-top: 30px; border-top: 1px solid var(--line); }.engineering-mix h3 { margin: 0; }.engineering-mix h4 { font-size: 18px; font-weight: 650; margin: 0 0 10px; }.engineering-mix p { font-size: 16px; margin: 0; }
.loop-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 95px; align-items: end; }.loop-heading .lead { max-width: 560px; margin-bottom: 26px; }
.evidence-loop { margin: 30px 0 0; }.canonical-loop { list-style: none; display: grid; grid-template-columns: repeat(5,1fr); gap: 30px; padding: 0; margin: 0; position: relative; }.canonical-loop::before { content: ''; position: absolute; top: 8px; left: 8px; right: 8px; border-top: 1px solid var(--dark); }.canonical-loop li { position: relative; padding-top: 37px; }.loop-node { position: absolute; top: 2px; left: 0; width: 13px; height: 13px; border: 2px solid var(--dark); background: white; border-radius: 50%; }.canonical-loop h3 { font-size: 20px; letter-spacing: .02em; margin-bottom: 12px; }.canonical-loop p { font-size: 16px; margin-bottom: 10px; }.approval-note { display: block; color: var(--dark); font-size: 13px; padding-left: 11px; border-left: 2px solid var(--orange); }
.evidence-return { margin: 15px 0 0 6px; min-height: 68px; border: 2px solid var(--orange); border-top: none; border-radius: 0 0 20px 20px; display: flex; justify-content: space-between; align-items: center; padding: 10px 25px; position: relative; }.evidence-return strong { font-size: 17px; font-weight: 600; background: white; padding: 0 15px; }.evidence-return > span { font-size: 25px; color: var(--dark); }.evidence-loop figcaption { max-width: 820px; margin: 16px 0 0; font-size: 13px; color: var(--muted); }
.outcome-comparison { display: grid; grid-template-columns: 1fr 45px 1fr 1.1fr; gap: 28px; align-items: center; border-top: 1px solid var(--line); padding-top: 30px; margin-top: 40px; }.outcome-comparison p { font-size: 16px; margin: 8px 0 0; }.comparison-symbol { font-size: 26px; color: var(--muted); }.outcome-evidence { border-left: 2px solid var(--orange); padding-left: 22px; }.outcome-evidence strong { display: block; font-size: 22px; font-weight: 600; }.outcome-evidence span { font-size: 15px; color: var(--dark); }
.engineering-trust { background: var(--paper); }.trust-heading h2 { max-width: 1000px; }.trust-layout { display: grid; grid-template-columns: .85fr 1.3fr; gap: 110px; margin-top: 50px; }.trust-intro h3 { font-size: 30px; margin: 0 0 20px; }.trust-intro p { font-size: 17px; max-width: 430px; }.context-insight { margin-top: 35px; padding-left: 20px; border-left: 2px solid var(--orange); }
.review-layer { border-left: 1px solid var(--dark); padding-left: 28px; }.review-stop { position: relative; }.review-stop h3 { font-size: 23px; margin: 0 0 10px; }.review-stop p { font-size: 16px; margin-bottom: 20px; max-width: 560px; }.review-tick { position: absolute; top: 0; left: -39px; width: 20px; background: var(--paper); font-size: 17px; }.exception-route { margin: 22px 0 27px 30px; border-left: 2px solid var(--orange); padding-left: 18px; }.exception-route strong { font-size: 16px; font-weight: 600; }.exception-route p { font-size: 15px; margin: 5px 0 0; }.approved-use { font-size: 17px; font-weight: 600; border-top: 1px solid var(--line); padding-top: 18px; }.approved-use span { margin-right: 15px; }
.enterprise-diligence { display: grid; grid-template-columns: .85fr 1.3fr; gap: 110px; padding-top: 35px; margin-top: 45px; border-top: 1px solid var(--line); }.enterprise-diligence h3 { font-size: 23px; margin: 0; }.enterprise-diligence p { font-size: 16px; margin: 0 0 14px; }
.engineering-close { padding: 55px 0; }.engineering-close > .shell { display: flex; justify-content: space-between; align-items: center; gap: 35px; }.engineering-close h2 { font-size: 36px; margin: 0; }
@media (max-width: 1040px) { .engineering-context-row { align-items: flex-start; flex-direction: column; gap: 12px; }.engineering-context-statement { font-size: 25px; } .engineering-mix { gap: 30px; }.canonical-loop { gap: 20px; }.canonical-loop h3 { font-size: 16px; }.canonical-loop p { font-size: 15px; }.trust-layout, .enterprise-diligence { gap: 50px; }.loop-heading { gap: 50px; } }
@media (max-width: 760px) {
 .engineering-mix { grid-template-columns: 1fr 1fr; }.engineering-mix h3 { grid-column: 1 / -1; }.loop-heading { display: block; }.trust-layout, .enterprise-diligence { grid-template-columns: 1fr; gap: 30px; }
 .canonical-loop { display: block; margin-right: 28px; padding-left: 30px; }.canonical-loop::before { left: 6px; top: 8px; bottom: 20px; right: auto; border-left: 1px solid var(--dark); border-top: none; }.canonical-loop li { padding: 0 0 28px; }.loop-node { left: -30px; top: 5px; }.canonical-loop h3 { font-size: 21px; margin-bottom: 8px; }.canonical-loop p { font-size: 16px; max-width: 480px; }.evidence-loop { position: relative; }.evidence-return { border-left: none; border-radius: 0 0 18px 0; margin: 0 0 0 6px; padding: 10px 20px 10px 0; }.evidence-loop::after { position: absolute; content: '↑'; color: var(--dark); right: -8px; top: -16px; font-size: 25px; }.evidence-return > span:first-child { display: none; }.evidence-return strong { font-size: 16px; padding: 0 10px 0 0; }.canonical-loop::after { content: ''; position: absolute; top: 5px; bottom: -3px; right: -28px; border-right: 2px solid var(--orange); }.outcome-comparison { grid-template-columns: 1fr 30px 1fr; gap: 14px; }.outcome-evidence { grid-column: 1 / -1; margin-top: 10px; }
}
@media (max-width: 600px) {
 .engineering-exploration .shell { width: calc(100% - 40px); }.engineering-hero { padding: 38px 0 45px; }.engineering-proposition h1 { font-size: 42px; }.engineering-proposition .lead { font-size: 18px; }.engineering-context { margin-top: 26px; padding: 20px 18px 22px; }.engineering-context-row { gap: 12px; }.engineering-context-row ul { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 16px; width: 100%; font-size: 15px; }.engineering-context-statement { margin-top: 20px; padding-top: 18px; font-size: 21px; line-height: 1.4; }.engineering-exploration h2 { font-size: 35px; }.engineering-movement { padding: 55px 0; }
 
 .system-lead { font-size: 17px; }.system-composition { margin-top: 25px; }.system-enclosure { padding: 23px 20px; border-right: 0; border-top: 0; border-bottom: 0; min-height: 0; }.system-enclosure::before, .system-enclosure::after { display: none; }.system-human, .system-context, .system-reasoning, .system-validation { position: relative; inset: auto; display: block; padding: 0; margin: 0 0 26px; background: none; }.system-validation { margin-bottom: 0; }.system-enclosure strong { font-size: 21px; }.system-enclosure span:not(.reasoning-mark) { font-size: 15px; display: block; margin-top: 6px; }.system-reasoning { border-left: 2px solid var(--orange); padding-left: 15px; }.reasoning-mark { display: none; }.system-human::before, .system-context::before, .system-validation::before { content: ''; position: absolute; left: -25px; top: 10px; width: 9px; height: 9px; border: 1px solid var(--dark); background: white; border-radius: 50%; }.engineering-mix { display: block; margin-top: 25px; padding-top: 25px; }.engineering-mix h3 { font-size: 25px; margin-bottom: 25px; }.engineering-mix h3 br { display: none; }.engineering-mix > div + div { margin-top: 24px; }.engineering-mix p { font-size: 16px; }
 .evidence-loop { margin-top: 25px; }.evidence-loop figcaption { font-size: 13px; padding-right: 10px; }.outcome-comparison { margin-top: 30px; }.technical-label { font-size: 12px; }.outcome-comparison p { font-size: 15px; }.trust-layout { margin-top: 30px; }.trust-intro h3 { font-size: 28px; }.context-insight { margin-top: 25px; }.review-layer { margin-left: 8px; padding-left: 23px; }.review-tick { left: -34px; }.exception-route { margin-left: 10px; }.enterprise-diligence { margin-top: 32px; padding-top: 28px; }.engineering-close { padding: 42px 0; }.engineering-close > .shell { align-items: start; flex-direction: column; gap: 25px; }.engineering-close h2 { font-size: 31px; }
}
@media (max-width: 375px) { .engineering-proposition h1 { font-size: 38px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
.loop-track { position: relative; }
@media (min-width: 761px) {
 .loop-track::before, .loop-track::after { content: ''; position: absolute; top: 8px; bottom: 34px; border-left: 2px solid var(--orange); pointer-events: none; }
 .loop-track::before { left: 6px; }.loop-track::after { right: 0; }
 .canonical-loop li { padding-left: 16px; }.canonical-loop .loop-node { left: 0; }
 .evidence-return { padding-left: 28px; }
}