:root{--accent-active:#00c853}.hero{z-index:1;grid-template-columns:1.2fr 1fr;align-items:center;gap:80px;max-width:1440px;min-height:100vh;margin:0 auto;padding:120px 80px 80px;display:grid;position:relative}.hero-left{flex-direction:column;max-width:640px;display:flex}.hero-eyebrow{letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:10px;font-size:12px;font-weight:500}.hero-headline{letter-spacing:-.04em;color:var(--ink);margin:0 0 36px;font-size:clamp(100px,6.5vw,96px);font-weight:500;line-height:1.05}.hero-subheadline{letter-spacing:-.02em;color:var(--ink);max-width:480px;margin:0 0 64px;font-size:clamp(17px,1.4vw,22px);font-weight:400;line-height:1.5}.hero-bottom{flex-direction:column;align-items:flex-start;gap:40px;display:flex}.listen-block{align-items:center;gap:18px;display:flex}.listen-text{color:var(--ink);font-size:14px;font-weight:500}.listen-btn{background:var(--ink);cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;width:52px;height:52px;padding:0;transition:background .25s,transform .15s;display:flex}.listen-btn:hover{background:#2a4d3f;transform:scale(1.05)}.listen-btn:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.listen-btn svg{width:14px;height:14px;fill:var(--bg);margin-left:2px}.listen-btn.is-playing,.listen-btn.is-playing:hover{background:var(--accent-active)}.listen-btn.is-playing svg{margin-left:0}.hero-right{justify-content:center;align-items:center;height:100vh;display:flex;position:relative}.sound-aura{aspect-ratio:1;width:100%;max-width:440px;position:relative}.sound-aura svg{shape-rendering:geometricprecision;width:100%;height:100%;image-rendering:-webkit-optimize-contrast;animation:8s ease-in-out infinite auraBreath}@keyframes auraBreath{0%,to{opacity:.95;transform:scale(1)}50%{opacity:1;transform:scale(1.04)}}.hero-social{z-index:10;gap:28px;display:flex;position:absolute;bottom:32px;right:56px}.hero-social a{color:var(--ink);font-size:12px;font-weight:500;text-decoration:none;transition:opacity .2s}.hero-social a:hover{opacity:.5}.psl-section{z-index:1;background:var(--bg);padding:140px 56px;position:relative}.psl-section.bg-alt{background:var(--bg-alt)}.section-grid{grid-template-columns:1fr 1fr;align-items:center;gap:96px;max-width:1400px;margin:0 auto;display:grid}.section-grid.flip{direction:rtl}.section-grid.flip>*{direction:ltr}.section-eyebrow{letter-spacing:.14em;text-transform:uppercase;color:var(--ink);opacity:.6;margin-bottom:32px;font-size:11px;font-weight:500}.section-headline{letter-spacing:-.025em;color:var(--ink);margin-bottom:32px;font-size:clamp(36px,4vw,60px);font-weight:800;line-height:1.1}.section-headline span:nth-child(2){color:var(--accent)}.section-headline span{color:var(--gray);font-weight:800}.section-body{color:var(--ink-soft);max-width:420px;margin-bottom:40px;font-size:14px;line-height:1.7}.section-link{color:var(--ink);border-bottom:1.5px solid var(--ink);align-items:center;gap:8px;padding-bottom:4px;font-size:13px;font-weight:600;text-decoration:none;transition:gap .2s;display:inline-flex}.section-link:hover{gap:14px}.stat-block{background:var(--line);border:1px solid var(--line);grid-template-columns:1fr 1fr;gap:1px;display:grid}.stat-cell{background:var(--bg-alt);padding:36px 32px;transition:background .2s}.stat-cell:hover{background:var(--bg)}.stat-num{letter-spacing:-.04em;color:var(--ink);margin-bottom:12px;font-size:56px;font-weight:800;line-height:1}.stat-num sup{color:var(--gray);font-size:22px;font-weight:700}.stat-label{letter-spacing:.12em;text-transform:uppercase;color:var(--gray);margin-bottom:12px;font-size:11px;font-weight:600}.stat-desc{color:var(--ink-soft);font-size:12px;line-height:1.6}.layers{flex-direction:column;gap:12px;display:flex}.layer-row{border-top:1px solid var(--line);grid-template-columns:90px 1fr;align-items:start;gap:24px;padding:28px 0;display:grid}.layer-row:last-child{border-bottom:1px solid var(--line)}.layer-tag{letter-spacing:.16em;text-transform:uppercase;color:var(--ink);padding-top:6px;font-size:11px;font-weight:700}.layer-content h4{letter-spacing:-.015em;color:var(--ink);margin:0 0 6px;font-size:18px;font-weight:700}.layer-content .freq{letter-spacing:.05em;color:var(--gray);font-variant-numeric:tabular-nums;margin-bottom:14px;font-size:11px;font-weight:500}.layer-content p{color:var(--ink-soft);margin:0;font-size:13px;line-height:1.65}.layer-content .layer-ko{color:var(--gray);margin-top:14px;font-size:12.5px;line-height:1.65}.pilot-section{background:var(--ink);color:var(--bg);z-index:1;padding:140px 56px;position:relative}.pilot-section .section-eyebrow{color:#f4f4f280}.pilot-section .section-headline{color:var(--bg)}.pilot-section .section-headline span{color:#f4f4f266}.pilot-section .section-body{color:#f4f4f2a6}.pilot-section .section-link{color:var(--bg);border-color:var(--bg)}.timeline{border-top:1px solid #f4f4f226}.tl-row{border-bottom:1px solid #f4f4f226;grid-template-columns:110px 1fr auto;align-items:center;gap:24px;padding:22px 0;transition:padding .3s;display:grid}.tl-row:hover{padding-left:12px}.tl-when{letter-spacing:.14em;text-transform:uppercase;color:#f4f4f280;font-size:11px;font-weight:600}.tl-what{letter-spacing:-.01em;color:var(--bg);font-size:15px;font-weight:600}.tl-meta{color:#f4f4f266;font-variant-numeric:tabular-nums;font-size:11px}.measure-list{border-top:1px solid #f4f4f226}.measure-row{border-bottom:1px solid #f4f4f226;grid-template-columns:200px 1fr;align-items:baseline;gap:24px;padding:22px 0;display:grid}.measure-key{letter-spacing:.12em;text-transform:uppercase;color:var(--bg);font-variant-numeric:tabular-nums;font-size:12px;font-weight:600}.measure-val{color:#f4f4f2a6;font-size:14px;line-height:1.55}.about-section{background:var(--bg);text-align:center;padding:160px 56px}.about-inner{max-width:720px;margin:0 auto}.about-inner .section-eyebrow{margin-bottom:40px}.about-mission{letter-spacing:-.02em;color:var(--ink);margin:0 0 20px;font-size:clamp(28px,3vw,42px);font-weight:700;line-height:1.3}.about-mission-en{color:var(--gray);letter-spacing:.01em;margin:0 0 56px;font-size:14px;line-height:1.6}.about-rule{border:0;border-top:1px solid var(--ink);opacity:1;width:32px;margin:0 auto 56px}.about-identity{color:var(--ink);margin:0 0 14px;font-size:15px;font-weight:500;line-height:1.75}.about-identity-en{color:var(--gray);letter-spacing:.02em;margin:0;font-size:12px;line-height:1.65}.cta-section{text-align:center;background:var(--bg);padding:180px 56px}.cta-headline{letter-spacing:-.04em;color:var(--ink);margin-bottom:32px;font-size:clamp(54px,7.5vw,120px);font-weight:800;line-height:1}.cta-headline span{color:var(--gray-soft)}.cta-sub{color:var(--ink-soft);margin-bottom:56px;font-size:15px}.cta-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:inline-flex}.btn-primary{background:var(--ink);color:var(--bg);letter-spacing:.02em;border-radius:4px;align-items:center;gap:10px;padding:18px 36px;font-size:13px;font-weight:600;text-decoration:none;transition:all .2s;display:inline-flex}.btn-primary:hover{background:#2a4d3f;transform:translateY(-2px)}.btn-ghost{color:var(--ink);letter-spacing:.02em;border:1.5px solid var(--ink);background:0 0;border-radius:4px;padding:18px 36px;font-size:13px;font-weight:600;text-decoration:none;transition:all .2s}.btn-ghost:hover{background:var(--ink);color:var(--bg)}.cta-meta{color:var(--gray);letter-spacing:.02em;font-variant-numeric:tabular-nums;margin-top:64px;font-size:12px}.psl-disclosure{border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center;background:var(--bg);padding:28px 56px}.psl-disclosure p{color:var(--ink-soft);margin:0;font-size:12px;line-height:1.7}.psl-disclosure .en{letter-spacing:.12em;text-transform:uppercase;color:var(--gray);font-variant-numeric:tabular-nums;margin-top:6px;font-size:10px;font-weight:600;display:block}.sound-rotate{transform-origin:50%;animation:30s linear infinite slowRotate}@keyframes slowRotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.arch-section{padding:140px 0;overflow:hidden}.arch-head{max-width:1400px;margin:0 auto 64px;padding:0 56px}.arch-rule{border:0;border-top:1px solid var(--ink);opacity:1;width:32px;margin:0 0 24px}.arch-title{letter-spacing:-.01em;color:var(--ink);margin:0;font-size:clamp(22px,2.2vw,32px);font-weight:500;line-height:1.3}.arch-title span{display:block}.arch-title span:nth-child(2){color:var(--accent)}.arch-scroller{scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;cursor:grab;-webkit-user-select:none;user-select:none;overflow:auto hidden}.arch-scroller::-webkit-scrollbar{display:none}.arch-scroller.is-dragging{cursor:grabbing}.arch-scroller.is-dragging *{pointer-events:none}.arch-track-row{gap:32px;width:max-content;padding:24px max(56px,50vw - 602px) 48px;display:flex}.arch-card{background:var(--bg);scroll-snap-align:center;border:0;border-radius:12px;flex-direction:column;flex:0 0 380px;width:380px;height:680px;transition:transform .4s,box-shadow .4s;display:flex;position:relative;overflow:hidden;box-shadow:0 1px 2px #0a0d0b0a,0 8px 24px #0a0d0b0f,0 24px 56px #0a0d0b0a}.arch-card:hover{transform:translateY(-4px);box-shadow:0 1px 2px #0a0d0b0a,0 12px 32px #0a0d0b14,0 32px 72px #0a0d0b0f}.arch-card-img{background:#1a1a1a;flex:0 0 280px;width:100%;margin:0;padding:0;position:relative;overflow:hidden}.arch-card-img img{object-fit:cover;object-position:center;pointer-events:none;z-index:1;width:100%;height:100%;transition:transform .4s,opacity .2s;display:block;position:relative}.arch-card-img:after{content:"";pointer-events:none;z-index:2;background:0 0;transition:background .2s;position:absolute;inset:0}.arch-card:hover .arch-card-img img{transform:scale(1.02)}.arch-card:hover .arch-card-img:after{background:#0000000f}.arch-card-body{background:0 0;flex-direction:column;flex:1;min-height:0;padding:20px 24px 16px;display:flex}.arch-card-index{letter-spacing:.14em;text-transform:uppercase;color:var(--ink);opacity:.6;font-variant-numeric:tabular-nums;margin-bottom:8px;font-size:11px;font-weight:500}.arch-card-subtitle{border-bottom:1px solid var(--line-soft);flex-direction:column;gap:4px;margin:0 0 24px;padding-bottom:16px;display:flex}.arch-card-subtitle>span:first-child{letter-spacing:-.015em;color:var(--ink);font-size:28px;font-weight:600;line-height:1.1;font-family:var(--psl-font)}.arch-card-subtitle span{display:block}.arch-card-caption{letter-spacing:.005em;color:var(--ink-soft);margin:0;font-size:14px;font-weight:400;line-height:1.65}.arch-tracks{border-top:1px solid var(--line);flex-direction:column;display:flex}.arch-track{border:0;border-bottom:1px solid var(--line);cursor:pointer;text-align:left;width:100%;height:42px;color:var(--ink);background:0 0;grid-template-columns:28px 96px 32px 1fr;align-items:center;column-gap:10px;padding:0;font-family:inherit;transition:color .2s;display:grid;position:relative}.arch-track:focus-visible{outline:1px solid var(--ink);outline-offset:2px}.arch-track-icon{background:var(--ink);width:22px;height:22px;color:var(--bg);font-variant-numeric:tabular-nums;border-radius:50%;justify-content:center;align-items:center;padding-left:1px;font-size:8px;line-height:1;transition:background .2s,color .2s,border-color .2s;display:inline-flex}.arch-track:hover .arch-track-icon{background:#2a4d3f}.arch-track-label{letter-spacing:.08em;text-transform:uppercase;font-variant-numeric:tabular-nums;white-space:nowrap;text-overflow:ellipsis;font-size:10.5px;font-weight:600;transition:color .2s;overflow:hidden}.arch-track-time{color:var(--gray);font-variant-numeric:tabular-nums;font-size:10.5px}.arch-track-desc{color:var(--ink-soft);text-align:right;text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.arch-track.is-playing .arch-track-icon{background:var(--accent-active);color:var(--bg);border-color:var(--accent-active);padding-left:0}.arch-track.is-playing:hover .arch-track-icon{background:var(--accent-active)}.arch-track.is-playing .arch-track-label{color:var(--accent-active)}.arch-track.is-disabled{color:var(--gray);cursor:not-allowed}.arch-track.is-disabled .arch-track-icon{background:var(--gray);color:var(--bg);border-color:var(--gray)}.arch-track.is-disabled:hover .arch-track-icon{background:var(--gray)}.arch-track.is-disabled .arch-track-label,.arch-track.is-disabled .arch-track-desc,.arch-track.is-disabled .arch-track-time{color:var(--gray)}.arch-track--emphasis{border-top:1px solid var(--ink);margin-top:-1px}.arch-track--emphasis .arch-track-label{font-weight:700}.arch-track--child{border-bottom:0;grid-template-columns:22px 96px 32px 1fr;height:36px;padding-left:32px;position:relative}.arch-track--child:before{content:"";background:var(--line);width:1px;position:absolute;top:0;bottom:0;left:12px}.arch-track--child .arch-track-icon{background:var(--bg);width:18px;height:18px;color:var(--ink);border:1px solid var(--ink);font-size:7px}.arch-track--child:hover .arch-track-icon{background:var(--ink);color:var(--bg)}.arch-track--child .arch-track-label{color:var(--ink-soft);font-weight:500}.arch-track--child .arch-track-desc{color:var(--gray)}.arch-track--child.is-playing .arch-track-label{color:var(--accent-active);font-weight:600}.arch-track--child:last-child{border-bottom:1px solid var(--line)}.arch-track-progress{background:var(--accent-active);pointer-events:none;width:0%;height:1px;transition:none;position:absolute;bottom:-1px;left:0}.arch-track--child .arch-track-progress{width:0%;left:32px;right:0}.arch-controls{justify-content:space-between;align-items:center;max-width:1400px;margin:32px auto 0;padding:0 56px;display:flex}.arch-dots{gap:8px;display:flex}.arch-dot{background:var(--line);cursor:pointer;border:0;width:24px;height:2px;padding:0;transition:background .2s}.arch-dot:hover{background:var(--gray)}.arch-dot.is-active{background:var(--ink)}.arch-hint{letter-spacing:.16em;text-transform:uppercase;color:var(--gray);font-variant-numeric:tabular-nums;font-size:10px;font-weight:500}.arch-foot{border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center;max-width:1400px;margin:64px auto 0;padding:28px 56px}.arch-foot p{color:var(--ink-soft);margin:0;font-size:12px;line-height:1.7}.arch-foot .en{letter-spacing:.12em;text-transform:uppercase;color:var(--gray);font-variant-numeric:tabular-nums;margin-top:6px;font-size:10px;font-weight:600;display:block}@media (max-width:900px){.hero{grid-template-columns:1fr;gap:40px;min-height:auto;padding:100px 24px 60px}.hero-left{padding-top:0;padding-left:0}.hero-bottom{grid-template-columns:1fr;gap:28px}.hero-right{height:auto}.hero-social{margin-top:40px;position:static}.psl-section,.pilot-section{padding:80px 24px}.section-grid{grid-template-columns:1fr;gap:48px}.section-grid.flip{direction:ltr}.stat-block{grid-template-columns:1fr}.cta-section{padding:100px 24px}.arch-section{padding:80px 0}.arch-head{margin-bottom:40px;padding:0 24px}.arch-track-row{gap:20px;padding:16px 24px 32px}.arch-controls{padding:0 24px}.arch-foot{margin-top:40px;padding:24px}.measure-row{grid-template-columns:140px 1fr;gap:16px;padding:16px 0}.measure-key{font-size:11px}.measure-val{font-size:13px}.psl-disclosure{padding:24px}.about-section{padding:100px 24px}.about-inner .section-eyebrow{margin-bottom:28px}.about-mission-en,.about-rule{margin-bottom:40px}.hero-subheadline{margin-bottom:56px}}@media (max-width:640px){.arch-card{flex:0 0 320px;width:320px;height:660px}.arch-card-img{flex:0 0 240px}.arch-card-subtitle{font-size:17px}.measure-row{grid-template-columns:1fr;gap:4px}}@media (prefers-reduced-motion:reduce){.arch-card-img img,.arch-card-img:after,.arch-card,.arch-track,.arch-track-icon,.arch-track-label,.listen-btn,.sound-rotate{transition:none!important;animation:none!important}.arch-scroller{scroll-behavior:auto!important}}.arch-card-body--full{background:0 0;flex-direction:column;flex:1;justify-content:space-between;min-height:0;padding:32px 28px 28px;display:flex}.arch-card:has(.arch-card-body--full){height:480px}.arch-card-subtitle .arch-card-subtitle-ko{letter-spacing:.02em;color:var(--ink);opacity:.55;margin-top:2px;font-size:13px;font-weight:400}.arch-tracks--ba{grid-template-columns:1fr 1fr;gap:12px;margin-top:24px;padding-top:24px;display:grid}.arch-track-ba{background:var(--bg-alt);cursor:pointer;border:1px solid #0000;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:24px 12px;transition:background .2s,border-color .2s;display:flex;position:relative}.arch-track-ba:hover:not(:disabled){background:var(--bg-aura);border-color:var(--accent-soft)}.arch-track-ba:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.arch-track-ba-icon{background:var(--ink);width:36px;height:36px;color:var(--bg);border-radius:50%;justify-content:center;align-items:center;padding-left:1px;font-size:12px;line-height:1;transition:background .2s;display:inline-flex}.arch-track-ba:hover .arch-track-ba-icon{background:#2a4d3f}.arch-track-ba-label{letter-spacing:.12em;text-transform:uppercase;color:var(--ink);font-size:11px;font-weight:600}.arch-track-ba.is-playing{background:var(--accent-deep);color:var(--bg);border-color:var(--accent-deep)}.arch-track-ba.is-playing .arch-track-ba-label,.arch-track-ba.is-playing .arch-track-ba-icon{color:var(--bg)}.arch-track-ba.is-playing:hover .arch-track-ba-icon{background:var(--accent-active)}.arch-track-ba.is-disabled{cursor:not-allowed;opacity:.4}.arch-track-ba.is-disabled:hover{border-color:var(--line)}.arch-track-ba .arch-track-progress{width:0%;bottom:0;left:0;right:0}@media (max-width:640px){.arch-card:has(.arch-card-body--full){height:440px}.arch-tracks--ba{gap:8px}.arch-track-ba{padding:20px 8px}.arch-track-ba-icon{width:32px;height:32px;font-size:11px}}.arch-grid{grid-template-columns:repeat(4,1fr);gap:24px;max-width:1400px;margin:0 auto;padding:0 56px;display:grid}.arch-card--grid{scroll-snap-align:none;flex:none;width:100%;height:auto;min-height:480px}@media (max-width:1100px){.arch-grid{grid-template-columns:repeat(2,1fr);gap:32px}}@media (max-width:640px){.arch-grid{grid-template-columns:1fr;gap:24px;padding:0 24px}.arch-card--grid{min-height:440px}}.footer-mail{color:inherit;border-bottom:1px solid var(--line);padding-bottom:2px;text-decoration:none;transition:border-color .2s}.footer-mail:hover{border-bottom-color:var(--ink)}.footer-social{align-items:center;gap:24px;display:flex}.footer-social a{width:36px;height:36px;color:var(--ink-soft);border-radius:50%;justify-content:center;align-items:center;transition:color .2s,background .2s;display:inline-flex}.footer-social a:hover{color:var(--ink);background:var(--bg-aura)}.guides{display:none}
.science-flat{flex-direction:column;gap:64px;max-width:1280px;margin:0 auto;padding:0 56px;display:flex}.science-flat-head{flex-direction:column;gap:24px;max-width:900px;display:flex}.science-flat-eyebrow{letter-spacing:.14em;text-transform:uppercase;color:var(--ink);font-size:11px;font-weight:500}.science-flat-headline{letter-spacing:-.02em;color:var(--ink);margin:0;font-size:clamp(40px,5vw,64px);font-weight:800;line-height:1.05}.science-flat-headline span{color:var(--gray);font-weight:300}.science-flat-body{color:var(--ink-soft);max-width:65ch;margin:0;font-size:14.5px;line-height:1.6}.science-flat-body em{color:var(--gray);margin-top:8px;font-size:13px;font-style:normal;display:block}.science-flat-link{letter-spacing:.04em;color:var(--ink);text-underline-offset:4px;align-items:center;gap:8px;margin-top:8px;font-size:13px;font-weight:600;text-decoration:underline;display:inline-flex}.science-flat-link:hover{text-decoration-thickness:2px}.science-layers-row{background:var(--bg-alt);border-radius:12px;grid-template-columns:1fr 1fr 1fr;gap:16px;padding:24px;display:grid}.science-layer{border-right:1px solid var(--line);background:0 0;border-radius:8px;flex-direction:column;gap:16px;padding:40px 32px;display:flex}.science-layer:last-child{border-right:none}.science-layer-tag{letter-spacing:.14em;text-transform:uppercase;color:var(--ink);opacity:.6;font-size:11px;font-weight:500}.science-layer-name{letter-spacing:-.01em;color:var(--ink);margin:0;font-size:18px;font-weight:600;line-height:1.3}.science-layer-freq{letter-spacing:.04em;color:var(--ink-soft);font-variant-numeric:tabular-nums;border-bottom:1px solid var(--line);padding-bottom:12px;font-size:11px;font-weight:500}.science-layer-body{color:var(--ink-soft);margin:0;font-size:12.5px;line-height:1.55}.science-layer-body-ko{color:var(--gray);margin:0;font-size:11.5px;line-height:1.55}.yt-carousel{z-index:1;background:var(--bg);box-sizing:border-box;width:100%;padding:64px 0;position:relative}.yt-carousel-head{justify-content:space-between;align-items:center;margin-bottom:24px;padding:0 56px;display:flex}.yt-carousel-eyebrow{letter-spacing:.14em;text-transform:uppercase;color:var(--ink);font-size:11px;font-weight:500}.yt-carousel-controls{gap:8px;display:flex}.yt-nav{border:1px solid var(--line);background:var(--bg);width:36px;height:36px;color:var(--ink);cursor:pointer;font-size:14px;font-family:var(--psl-font);transition:background .15s,border-color .15s}.yt-nav:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}.yt-nav:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.yt-track{scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;flex-wrap:nowrap;gap:16px;padding:4px 56px;display:flex;overflow:auto hidden}.yt-track::-webkit-scrollbar{display:none}.yt-card{scroll-snap-align:start;flex-direction:column;flex:0 0 320px;gap:12px;width:320px;min-width:320px;display:flex}.yt-card.is-active{flex:0 0 480px}.yt-card-button{cursor:pointer;background:0 0;border:0;width:100%;padding:0;font-family:inherit;display:block}.yt-card-button:disabled{cursor:default}.yt-card-button:focus-visible{outline:2px solid var(--ink);outline-offset:4px}.yt-thumb{aspect-ratio:16/9;background-color:var(--gray-soft);background-position:50%;background-size:cover;justify-content:center;align-items:center;width:100%;transition:opacity .2s;display:flex;position:relative}.yt-card-button:hover .yt-thumb{opacity:.92}.yt-thumb-placeholder{border:1px dashed var(--gray-soft);background-color:#0a0a0a0f;background-image:none}.yt-coming{letter-spacing:.14em;text-transform:uppercase;color:var(--gray);font-size:10px;font-weight:600}.yt-play{color:var(--bg);background:#0a0a0ad9;border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;padding-left:4px;font-size:18px;display:flex}.yt-iframe-wrap{aspect-ratio:16/9;background:#000;width:100%;position:relative}.yt-iframe-wrap iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.yt-meta{align-items:baseline;gap:8px;padding:0 4px;display:flex}.yt-tag{letter-spacing:.1em;color:var(--gray);font-variant-numeric:tabular-nums;flex-shrink:0;font-size:10px;font-weight:700}.yt-title{color:var(--ink);letter-spacing:-.005em;font-size:12.5px;line-height:1.4}@media (max-width:900px){.science-flat{gap:48px;padding:0 24px}.science-layers-row{grid-template-columns:1fr}.science-layer{border-right:none;border-bottom:1px solid var(--line)}.science-layer:last-child{border-bottom:none}.yt-carousel{padding:48px 0}.yt-carousel-head{padding:0 24px}.yt-track{padding:4px 24px}.yt-card{flex:0 0 260px}.yt-card.is-active{flex:0 0 320px}}