.welcome-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 0 34px; }
.system-testing-link { color: var(--yellow); }
.system-photo { position: relative; min-width: 0; margin: 0; padding: 26px; border: 1px solid #38383a; border-radius: 20px; background: #101012; box-shadow: 16px 16px 0 var(--yellow); }
.system-photo-heading { border-bottom: 1px solid #38383a; padding-bottom: 20px; }
.system-photo-heading > span { display: block; color: #c0c0c0; font-size: .66rem; font-weight: 800; letter-spacing: .12em; }
.system-photo-heading > strong { display: block; margin-top: 10px; font: 900 clamp(1.8rem, 2.6vw, 2.9rem)/.95 var(--display); text-transform: uppercase; }
.system-photo > img { width: 100%; height: auto; margin-top: 20px; }
.system-photo figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; padding-top: 15px; border-top: 1px solid #38383a; color: #b7b7bb; font-size: .67rem; }
.system-photo figcaption a { text-underline-offset: 3px; }

.testing-section { padding: 112px 0 100px; background: var(--paper); }
.testing-intro { display: grid; grid-template-columns: 1fr .85fr; gap: 8vw; align-items: end; margin-bottom: 48px; }
.testing-intro h2, .founder-story-copy h2 { margin: 0; font: 900 clamp(3.5rem, 6.3vw, 6.6rem)/.9 var(--display); letter-spacing: -.045em; text-transform: uppercase; }
.testing-intro > div:last-child p { margin: 0; color: #55555a; }
.testing-intro > div:last-child p + p { margin-top: 16px; }
.testing-explorer { overflow: hidden; border: 1px solid #c8c8c1; border-radius: 20px; background: #fff; }
.testing-tabs { display: none; }
.testing-explorer.is-interactive .testing-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-bottom: 1px solid #c8c8c1; }
.testing-tabs button { min-width: 0; min-height: 102px; padding: 20px 22px; border: 0; border-right: 1px solid #c8c8c1; color: var(--ink); background: #fff; text-align: left; cursor: pointer; transition: background .18s ease; }
.testing-tabs button:last-child { border-right: 0; }
.testing-tabs button:hover { background: #f4f4ef; }
.testing-tabs button[aria-selected="true"] { background: var(--yellow); }
.testing-tabs button:focus-visible { position: relative; z-index: 1; outline-color: var(--black); outline-offset: -5px; }
.testing-tabs button > span { display: block; margin-bottom: 9px; color: #56564f; font-size: .64rem; font-weight: 850; letter-spacing: .1em; }
.testing-tabs button > strong { display: block; font: 900 clamp(1.3rem, 1.8vw, 1.8rem)/1 var(--display); text-transform: uppercase; }
.testing-panel { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); min-height: 590px; border-bottom: 1px solid var(--line); }
.testing-panel:last-child, .is-interactive .testing-panel { border-bottom: 0; }
.testing-panel[hidden] { display: none; }
.testing-panel:focus-visible { outline-color: var(--ink); outline-offset: -5px; }
.testing-media { position: relative; display: flex; align-items: center; justify-content: center; min-width: 0; margin: 0; padding: 35px 20px 54px; background: #111113; }
.testing-media img { width: 100%; height: auto; max-height: 535px; object-fit: contain; }
.testing-media figcaption { position: absolute; left: 22px; bottom: 20px; color: #b7b7bc; font-size: .65rem; letter-spacing: .03em; }
.testing-panel-copy { min-width: 0; padding: 39px 38px; }
.test-category { margin: 0 0 18px; color: #64646a; font-size: .65rem; font-weight: 850; letter-spacing: .12em; }
.testing-panel-copy h3 { margin: 0; font: 900 clamp(2.3rem, 3.7vw, 3.8rem)/.95 var(--display); letter-spacing: -.035em; text-transform: uppercase; }
.testing-panel-copy dl { margin: 25px 0 0; }
.testing-panel-copy dl > div { padding: 15px 0; border-top: 1px solid #ddddda; }
.testing-panel-copy dt { margin-bottom: 5px; color: #353537; font-size: .66rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.testing-panel-copy dd { margin: 0; color: #59595d; font-size: .9rem; line-height: 1.6; }
.test-source { display: flex; justify-content: space-between; gap: 15px; margin-top: 12px; padding-top: 12px; border-top: 1px solid #ddddda; font-size: .73rem; font-weight: 750; text-underline-offset: 4px; }
.test-source:focus-visible { outline-color: var(--black); }
.testing-outcome { display: grid; grid-template-columns: .85fr 1.15fr; gap: 8vw; margin-top: 46px; padding-top: 37px; border-top: 1px solid #c7c7c0; }
.testing-outcome h3 { margin: 0; font: 900 clamp(2.2rem, 3.3vw, 3.6rem)/.95 var(--display); letter-spacing: -.035em; text-transform: uppercase; }
.testing-outcome p:not(.section-kicker) { margin: 0; color: #55555a; }
.testing-outcome p.testing-schedule { margin-top: 16px; font-size: .88rem; }
.testing-outcome .arrow-link { margin-top: 18px; }

.philosophy-research { margin-top: 52px; }
.philosophy-research details { border-top: 1px solid rgba(0,0,0,.34); border-bottom: 1px solid rgba(0,0,0,.34); }
.philosophy-research summary, .founder-experience summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 61px; padding: 16px 0; list-style: none; font-size: .8rem; font-weight: 800; cursor: pointer; }
.philosophy-research summary::-webkit-details-marker, .founder-experience summary::-webkit-details-marker { display: none; }
.philosophy-research summary > span:last-child, .founder-experience summary > span:last-child { font-size: 1.4rem; line-height: 1; transition: transform .2s ease; }
.philosophy-research details[open] summary > span:last-child, .founder-experience[open] summary > span:last-child { transform: rotate(45deg); }
.philosophy-research summary:focus-visible { outline-color: var(--black); }
.research-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6vw; padding: 0 0 26px; }
.research-grid p { margin: 0; color: #4c4308; font-size: .9rem; }
.research-grid strong { display: block; color: var(--ink); margin-bottom: 8px; }
.research-grid a { display: block; width: fit-content; margin-top: 15px; font-size: .73rem; font-weight: 750; text-underline-offset: 4px; }

.about-section { padding: 120px 0; background: #fff; }
.founder-story { display: grid; grid-template-columns: .9fr 1.1fr; gap: 7vw; align-items: center; }
.founder-photo { position: relative; margin: 0; overflow: hidden; border-radius: 18px; background: var(--black); }
.founder-photo img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; }
.founder-photo figcaption { position: absolute; inset: auto 0 0; padding: 76px 27px 26px; color: #fff; background: linear-gradient(transparent,rgba(0,0,0,.86)); }
.founder-photo figcaption strong { display: block; font: 900 1.5rem/1.1 var(--display); letter-spacing: .03em; }
.founder-photo figcaption span { display: block; margin-top: 6px; color: #dddddf; font-size: .75rem; }
.founder-story-copy { min-width: 0; }
.founder-story-copy h2 { font-size: clamp(3.2rem, 5.5vw, 5.7rem); }
.founder-story-copy > p:not(.section-kicker) { margin: 22px 0 0; color: #57575b; }
.founder-story-copy > p.founder-lede { color: #28282a; font-size: 1.12rem; }
.founder-signoff { display: flex; flex-wrap: wrap; gap: 7px 16px; margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--line); font-size: .72rem; font-weight: 800; }
.founder-signoff span::before { content: "+"; margin-right: 8px; color: #887400; }
.founder-bios { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; align-items: start; margin-top: 64px; }
.founder-bio { min-width: 0; padding: 30px; border: 1px solid #d8d8d1; border-radius: 18px; background: var(--paper); }
.founder-bio-head { display: grid; grid-template-columns: 108px minmax(0, 1fr); gap: 24px; align-items: center; padding-bottom: 27px; border-bottom: 1px solid #d1d1ca; }
.founder-bio-head img { width: 108px; height: 135px; object-fit: cover; border-radius: 10px; }
.founder-role { margin: 0 0 12px; color: #636363; font-size: .63rem; font-weight: 850; line-height: 1.6; letter-spacing: .08em; }
.founder-bio h3 { margin: 0; font: 900 clamp(2.2rem, 3.4vw, 3.4rem)/.94 var(--display); letter-spacing: -.025em; text-transform: uppercase; }
.founder-postnominals { margin: 12px 0 0; font-size: .76rem; font-weight: 750; }
.founder-bio > p { margin: 24px 0 0; color: #535357; font-size: .94rem; }
.founder-education { margin-top: 28px; }
.founder-education h4 { margin: 0 0 13px; color: #55555a; font-size: .66rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.founder-education ul, .founder-experience ul { margin: 0; padding: 0; list-style: none; }
.founder-education li, .founder-experience li { padding: 13px 0; border-top: 1px solid #d1d1ca; }
.founder-education li strong, .founder-experience li strong { display: block; font-size: .89rem; line-height: 1.5; }
.founder-education li span, .founder-experience li span { display: block; margin-top: 5px; color: #606064; font-size: .8rem; line-height: 1.6; }
.founder-experience { margin-top: 15px; border-top: 1px solid #b9b9b0; border-bottom: 1px solid #b9b9b0; }
.founder-experience summary:focus-visible { outline-color: var(--black); }
.founder-experience ul { padding-bottom: 10px; }
.founder-bio p.michael-bio-note { margin-top: 21px; padding-top: 20px; border-top: 1px solid #d1d1ca; }

@media (max-width: 1050px) {
  .system-photo { max-width: 650px; margin-inline: auto; width: calc(100% - 16px); }
  .testing-intro { grid-template-columns: 1fr; gap: 25px; }
  .testing-intro > div:last-child { max-width: 730px; }
  .testing-tabs button { padding: 18px 16px; }
  .testing-panel-copy { padding: 30px 26px; }
  .testing-panel { min-height: 600px; }
  .founder-story { gap: 40px; }
  .founder-story-copy h2 { font-size: clamp(2.9rem, 5.8vw, 4.5rem); }
  .founder-story-copy > p:not(.section-kicker) { font-size: .95rem; margin-top: 18px; }
  .founder-bio { padding: 24px; }
  .founder-bio-head { grid-template-columns: 85px minmax(0,1fr); gap: 16px; }
  .founder-bio-head img { width: 85px; height: 107px; }
  .founder-bio h3 { font-size: 2.4rem; }
}

@media (max-width: 800px) {
  .testing-panel { grid-template-columns: 1fr; min-height: 0; }
  .testing-media { min-height: 340px; padding: 26px 26px 45px; }
  .testing-media img { max-height: 370px; }
  .testing-panel-copy h3 { font-size: 3rem; }
  .testing-outcome { grid-template-columns: 1fr; gap: 25px; }
  .founder-story { grid-template-columns: 1fr; gap: 38px; }
  .founder-photo { max-width: 540px; width: 100%; }
  .founder-story-copy h2 { font-size: clamp(3rem, 9vw, 5.5rem); }
  .founder-story-copy > p:not(.section-kicker) { font-size: 1rem; }
  .founder-bios { grid-template-columns: 1fr; gap: 22px; margin-top: 45px; }
  .founder-bio-head { grid-template-columns: 108px minmax(0,1fr); gap: 24px; }
  .founder-bio-head img { width: 108px; height: 135px; }
  .founder-bio h3 { font-size: 2.8rem; }
}

@media (max-width: 700px) {
  .testing-section, .about-section { padding: 80px 0; }
  .welcome-links { gap: 0 24px; }
  .system-photo { padding: 20px; border-radius: 15px; box-shadow: 10px 10px 0 var(--yellow); }
  .system-photo-heading strong { font-size: 2rem; }
  .testing-intro { margin-bottom: 32px; }
  .testing-intro h2 { font-size: clamp(3rem, 14vw, 4.5rem); }
  .testing-intro > div:last-child p { font-size: .95rem; }
  .testing-explorer { border-radius: 15px; }
  .testing-explorer.is-interactive .testing-tabs { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .testing-tabs button { min-height: 89px; padding: 17px 15px; }
  .testing-tabs button:nth-child(2) { border-right: 0; }
  .testing-tabs button:nth-child(-n+2) { border-bottom: 1px solid #c8c8c1; }
  .testing-tabs button > span { font-size: .59rem; }
  .testing-tabs button > strong { font-size: 1.35rem; }
  .testing-media { min-height: 285px; padding: 22px 18px 42px; }
  .testing-media img { max-height: 330px; }
  .testing-panel-copy { padding: 28px 23px; }
  .testing-panel-copy h3 { font-size: clamp(2.3rem, 10.4vw, 3.1rem); }
  .testing-panel-copy dd { font-size: .9rem; }
  .testing-outcome { margin-top: 32px; padding-top: 28px; }
  .testing-outcome h3 { font-size: 2.8rem; }
  .testing-outcome .arrow-link { font-size: .65rem; }
  .philosophy-research { margin-top: 34px; }
  .research-grid { grid-template-columns: 1fr; gap: 24px; }
  .founder-photo figcaption { padding: 65px 22px 22px; }
  .founder-bio { padding: 23px; }
  .founder-bio-head { grid-template-columns: 86px minmax(0,1fr); gap: 17px; }
  .founder-bio-head img { width: 86px; height: 108px; }
  .founder-bio h3 { font-size: 2.45rem; }
  .founder-role { font-size: .58rem; margin-bottom: 10px; }
  .founder-postnominals { font-size: .7rem; }
}