:root{--ink:#171923;--purple:#3d3b78;--deep:#292653;--green:#74a84a;--paper:#f4f5f2;--line:#d9dae1;--muted:#626471}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:"Manrope",Arial,sans-serif;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.section{width:min(1180px,calc(100% - 48px));margin:auto}
.site-header{height:92px;padding:0 max(28px,calc((100vw - 1180px)/2));display:flex;align-items:center;gap:38px;background:var(--purple);color:#fff}
.brand{margin-right:auto}
.brand img{width:150px;height:62px;object-fit:contain}
nav{display:flex;gap:30px}
nav a,.header-cta{font-size:13px;text-transform:uppercase;letter-spacing:.08em}
.header-cta{padding:14px 18px;border:1px solid #ffffff4d}
.hero{min-height:720px;position:relative;display:grid;align-items:center;color:#fff}
.hero-image,.hero-overlay{position:absolute;inset:0}
.hero-image{background:url('../public/assets/hero-lab.jpg') 64% center/cover}
.hero-overlay{background:linear-gradient(90deg,#15132ff5 0%,#292653e8 48%,#29265352 80%)}
.hero-content{position:relative;width:min(1180px,calc(100% - 48px));margin:auto;padding:82px 0}
.eyebrow{margin:0 0 18px;color:var(--green);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.15em}
h1,h2,h3{margin:0;font-family:"Outfit",Arial,sans-serif;font-weight:700;line-height:1.04}
h1{font-size:clamp(54px,6vw,82px);letter-spacing:-.045em}
.hero-lead{max-width:720px;margin:28px 0 16px;font-size:20px;line-height:1.55}
.hero-copy{max-width:700px;margin:0 0 32px;color:#ffffffbf;font-size:16px;line-height:1.7}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 22px;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.07em}
.button.light{background:#fff;color:var(--deep)}
.button.dark{background:var(--purple);color:#fff}
.section-intro,.contact{padding:100px 0 58px;display:grid;grid-template-columns:1.1fr .9fr;gap:96px;align-items:end}
.section-intro h2,.science h2,.videos h2,.talks h2,.contact h2{font-size:clamp(42px,5vw,70px);letter-spacing:-.04em}
.section-intro>p,.contact>div>p{margin:0;color:var(--muted);font-size:18px;line-height:1.75}
.resource-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;padding-bottom:106px}
.resource-card{min-height:300px;padding:38px;display:flex;flex-direction:column;border:1px solid var(--line);border-bottom:3px solid var(--green);box-shadow:0 14px 36px #1b1c2b14}
.resource-card>span{color:var(--green);font-size:13px;font-weight:600}
.resource-card h3{margin:24px 0 16px;font-size:34px}
.resource-card p{max-width:480px;margin:0 0 28px;color:var(--muted);line-height:1.7}
.resource-card a{margin-top:auto;color:var(--purple);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.science{background:var(--paper)}
.science-inner{padding:94px 0;display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}
.science-inner>div:last-child p{margin:0 0 24px;color:var(--muted);font-size:18px;line-height:1.75}
.coming{display:inline-block;padding:13px 16px;border:1px solid var(--green);color:#537d33;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em}
.videos{padding:106px 0;display:grid;gap:48px}
.video-intro-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:80px;align-items:center}
.video-copy{max-width:830px}
.video-copy>p:not(.eyebrow){margin:28px 0 30px;color:var(--muted);font-size:18px;line-height:1.75}
.video-topics{display:grid;gap:14px}
.video-topics>a{min-height:116px;padding:22px 28px;border:1px solid var(--line);display:grid;grid-template-columns:48px 1fr;gap:18px;align-items:center;background:#fff;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.video-topics>a:hover,.video-topics>a:focus-visible{border-color:var(--green);transform:translateY(-2px);box-shadow:0 12px 30px #1b1c2b12;outline:0}
.video-topics span{color:var(--green);font-size:20px;font-weight:700}
.video-topics strong{display:block;font-family:"Outfit",Arial,sans-serif;font-size:23px;line-height:1.15}
.video-topics small{display:block;margin-top:7px;color:var(--muted);font-size:14px;line-height:1.45}
.video-series{display:grid;gap:26px}
.video-series,.video-card{scroll-margin-top:28px}
.series-heading{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:end}
.series-heading span{display:block;margin-bottom:10px;color:var(--green);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.12em}
.series-heading h3{font-size:clamp(30px,4vw,46px);letter-spacing:-.035em}
.series-heading p{margin:0;color:var(--muted);font-size:16px;line-height:1.65}
.series-heading p a{color:var(--purple);font-weight:700}
.video-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.video-card{overflow:hidden;border:3px solid var(--green);background:#111;box-shadow:0 14px 36px #1b1c2b20}
.video-frame{position:relative;aspect-ratio:9/16;background:#111}
.video-frame video{display:none;width:100%;height:100%;background:#111;object-fit:contain}
.video-frame.is-playing video{display:block}
.video-frame.is-playing .video-cover{display:none}
.video-cover{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;overflow:hidden;background:#111;color:#fff;cursor:pointer;text-align:left}
.video-cover>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.video-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#0000000d 22%,#00000042 52%,#05050be8 82%,#05050b 100%)}
.video-cover:hover>img,.video-cover:focus-visible>img{transform:scale(1.025)}
.video-cover:focus-visible{outline:4px solid #fff;outline-offset:-7px}
.cover-series,.video-cover strong,.cover-name,.cover-topic,.cover-footer{position:absolute;z-index:1;left:9%;right:9%}
.cover-series{top:5%;color:#9ddc63;font-size:14px;font-weight:800;text-align:center;letter-spacing:.12em}
.video-cover strong{top:47%;font-family:"Outfit",Arial,sans-serif;font-size:clamp(25px,2.7vw,43px);line-height:.98;letter-spacing:-.035em;text-shadow:0 3px 18px #000;text-transform:uppercase}
.cover-name{top:67%;right:0;padding:12px 14px;background:#474388;font-family:"Outfit",Arial,sans-serif;font-size:clamp(16px,1.5vw,24px);font-weight:700;letter-spacing:.01em;text-align:center}
.cover-topic{top:77%;font-size:clamp(14px,1.35vw,20px);line-height:1.25}
.cover-footer{bottom:4%;display:flex;align-items:center;gap:8px;width:max-content;max-width:82%;padding:7px 14px;border-radius:999px;background:var(--green);color:#fff;font-size:13px;font-style:normal;font-weight:800;letter-spacing:.06em}
.cover-footer i{font-style:normal;font-size:11px}
.talks{background:var(--deep);color:#fff}
.talks-inner{padding:108px 0;display:grid;grid-template-columns:1fr .85fr;gap:42px 80px}
.talks-title>p:not(.eyebrow){max-width:650px;margin:28px 0 0;color:#ffffffb5;line-height:1.75}
.event-card{padding:38px;border:1px solid #ffffff38;background:#ffffff0a}
.event-label{color:var(--green);font-size:12px;text-transform:uppercase;letter-spacing:.14em}
.event-card h3{margin:20px 0 5px;font-size:32px}
.event-card p{color:#ffffffb5;line-height:1.65}
.event-card a{color:#fff;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.stream{grid-column:1/-1;padding-top:42px;border-top:1px solid #ffffff2e}
.stream h3{font-size:30px}
.stream p{max-width:700px;color:#ffffffb5;line-height:1.7}
.contact{padding-bottom:100px}
.contact .button{margin-top:12px}
footer{background:var(--purple);color:#fff}
.footer-main{padding:65px 0 46px;display:grid;grid-template-columns:1.4fr 1fr;gap:80px}
.footer-main img{width:170px}
.footer-main p,.footer-main a{color:#ffffffb8;line-height:1.7}
.copyright{padding:20px 0;border-top:1px solid #ffffff26;display:flex;justify-content:space-between;color:#ffffff8a;font-size:12px}

@media(max-width:900px){nav,.header-cta{display:none}
.section-intro,.science-inner,.videos,.talks-inner,.contact{grid-template-columns:1fr;gap:36px}
.video-intro-grid{grid-template-columns:1fr;gap:38px}
.series-heading{grid-template-columns:1fr;gap:14px}
.video-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
.resource-grid{grid-template-columns:1fr}
.event-card{max-width:640px}
.stream{grid-column:auto}
}

@media(max-width:640px){.section,.hero-content{width:calc(100% - 32px)}
.site-header{height:72px;padding:0 16px}
.brand img{width:122px;height:54px}
.hero{min-height:auto}
.hero-image{background-position:68% center}
.hero-overlay{background:linear-gradient(90deg,#15132ff8,#292653db 76%,#29265370)}
.hero-content{padding:72px 0 58px}
.eyebrow{font-size:12px;line-height:1.5;letter-spacing:.12em}
h1{font-size:clamp(40px,12vw,52px)}
.hero-lead{font-size:17px}
.hero-copy{font-size:15px}
.button{width:100%;text-align:center}
.section-intro,.contact{padding:64px 0 42px}
.section-intro h2,.science h2,.videos h2,.talks h2,.contact h2{font-size:clamp(34px,10vw,44px)}
.section-intro>p,.contact>div>p,.science-inner>div:last-child p,.video-copy>p:not(.eyebrow){font-size:16px;line-height:1.65}
.resource-grid{gap:22px;padding-bottom:64px}
.resource-card{min-height:0;padding:28px 24px}
.resource-card h3{font-size:29px}
.science-inner,.videos,.talks-inner{padding:64px 0}
.video-gallery{grid-template-columns:1fr;gap:24px}
.video-topics>a{min-height:0;padding:20px;grid-template-columns:40px 1fr}
.video-topics strong{font-size:21px}
.video-cover strong{font-size:clamp(34px,10vw,48px)}
.cover-name{font-size:clamp(20px,6vw,28px)}
.cover-topic{font-size:clamp(16px,4.7vw,21px)}
.talks-inner{gap:34px}
.event-card{padding:28px 24px}
.event-card h3{font-size:27px}
.stream{padding-top:32px}
.stream h3{font-size:26px}
.contact{padding-bottom:68px}
.footer-main{grid-template-columns:1fr;gap:34px;padding:54px 0 40px}
.copyright{flex-direction:column;gap:8px}
}

.talks-banner{grid-column:1/-1;margin:0;grid-row:2;overflow:hidden;border:1px solid #ffffff38}
.talks-banner img{display:block;width:100%;height:auto}
.talks-title{grid-column:1/-1}
.talks-guests h3{font-size:28px;margin:0 0 20px}
.talks-guests p{color:#ffffffc9;line-height:1.9;font-size:18px}
a:focus-visible{outline:3px solid var(--green);outline-offset:5px}
@media(max-width:900px){.talks-banner{grid-column:auto;grid-row:auto}.talks-title{grid-column:auto}}