:root{
 --bg:#f6f4ff;--bg2:#ece8ff;--ink:#16122b;--muted:#5d5878;
 --brand:#6d28d9;--brand2:#06b6d4;--accent:#f59e0b;
 --glass:color-mix(in srgb,#fff 62%,transparent);--glass-b:color-mix(in srgb,#fff 70%,transparent);
 --shadow:0 20px 50px -20px rgba(109,40,217,.35);
 --r:22px;--hh:72px;color-scheme:light;
}
:root[data-theme=dark]{
 --bg:#0d0a1f;--bg2:#161033;--ink:#f1eeff;--muted:#a9a3c9;
 --glass:color-mix(in srgb,#1d1640 62%,transparent);--glass-b:color-mix(in srgb,#fff 12%,transparent);
 --shadow:0 20px 50px -20px rgba(0,0,0,.7);color-scheme:dark;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
 --bg:#0d0a1f;--bg2:#161033;--ink:#f1eeff;--muted:#a9a3c9;
 --glass:color-mix(in srgb,#1d1640 62%,transparent);--glass-b:color-mix(in srgb,#fff 12%,transparent);
 --shadow:0 20px 50px -20px rgba(0,0,0,.7);color-scheme:dark;}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 12px)}
body{margin:0;font:16px/1.65 system-ui,-apple-system,"Segoe UI","Noto Sans","Noto Sans Devanagari","Noto Nastaliq Urdu",Roboto,sans-serif;color:var(--ink);
 background:radial-gradient(1200px 600px at 10% -10%,color-mix(in srgb,var(--brand) 18%,transparent),transparent),
 radial-gradient(900px 500px at 100% 0,color-mix(in srgb,var(--brand2) 16%,transparent),transparent),var(--bg);
 background-attachment:fixed;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
.wrap{width:min(1180px,100% - 2rem);margin-inline:auto}
.narrow{width:min(860px,100% - 2rem)}
.center{text-align:center}
.muted{color:var(--muted)}.small{font-size:.875rem}
.skip{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:.6rem 1rem;z-index:999}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:3px solid var(--brand2);outline-offset:2px;border-radius:6px}

/* glass */
.glass{background:var(--glass);border:1px solid var(--glass-b);backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);box-shadow:var(--shadow);border-radius:var(--r)}

/* header */
.site-header{position:sticky;top:0;z-index:100;padding-top:env(safe-area-inset-top);background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:blur(18px) saturate(170%);-webkit-backdrop-filter:blur(18px) saturate(170%);border-bottom:1px solid var(--glass-b);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 10px 30px -18px rgba(0,0,0,.45)}
.bar{display:flex;align-items:center;gap:1rem;height:var(--hh)}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--ink);text-decoration:none!important}
.brand img{width:44px;height:44px;border-radius:12px}
.logo-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 8px 18px -6px var(--brand);transform:perspective(200px) rotateY(-12deg)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text small{color:var(--muted);font-size:.72rem}
.nav{margin-inline:auto}
.menu,.foot-menu{list-style:none;margin:0;padding:0;display:flex;gap:.25rem}
.menu a{display:block;padding:.5rem .8rem;border-radius:12px;color:var(--ink);font-weight:600;font-size:.94rem}
.menu a:hover,.menu .current-menu-item>a{background:color-mix(in srgb,var(--brand) 14%,transparent);text-decoration:none}
.menu li{position:relative}
.menu .sub-menu{position:absolute;left:0;top:100%;min-width:200px;list-style:none;margin:0;padding:.4rem;background:var(--bg);border:1px solid var(--glass-b);border-radius:14px;box-shadow:var(--shadow);display:none}
.menu li:hover>.sub-menu,.menu li:focus-within>.sub-menu{display:block}
.actions{display:flex;align-items:center;gap:.5rem}
.icon-btn{width:42px;height:42px;border-radius:12px;border:1px solid var(--glass-b);background:var(--glass);color:var(--ink);cursor:pointer;font-size:1.1rem}
.burger{display:none;flex-direction:column;justify-content:center;align-items:center;gap:4px}
.burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:.25s}
.burger[aria-expanded=true] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-cta-mobile{display:none}
.progress{height:3px;width:100%;transform-origin:0 50%;transform:scaleX(0);background:linear-gradient(90deg,var(--brand),var(--brand2),var(--accent))}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.65rem 1.15rem;border-radius:14px;border:1px solid transparent;cursor:pointer;font:inherit;font-weight:700;text-decoration:none!important;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--brand),#8b5cf6 60%,var(--brand2));box-shadow:0 12px 24px -10px var(--brand),inset 0 1px 0 rgba(255,255,255,.35)}
.btn-ghost{color:var(--ink);background:var(--glass);border-color:var(--glass-b)}
.btn-lg{padding:.9rem 1.5rem;font-size:1.02rem;border-radius:16px}

/* hero */
.hero{position:relative;overflow:hidden;padding:clamp(2rem,6vw,5rem) 0 3rem}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:2rem;align-items:center}
.badge{display:inline-block;padding:.35rem .9rem;border-radius:99px;font-size:.82rem;font-weight:700;color:var(--brand);background:color-mix(in srgb,var(--brand) 12%,transparent);border:1px solid color-mix(in srgb,var(--brand) 30%,transparent)}
.hero h1{font-size:clamp(2.2rem,5.2vw,4rem);margin:1rem 0;background:linear-gradient(120deg,var(--ink) 30%,var(--brand) 70%,var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.12rem;color:var(--muted);max-width:56ch}
.cta{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.6rem 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem;margin:2rem 0 0}
.stats div{padding:.8rem;border-radius:16px;background:var(--glass);border:1px solid var(--glass-b)}
.stats dt{font-size:1.4rem;font-weight:800;color:var(--brand)}
.stats dd{margin:0;font-size:.78rem;color:var(--muted)}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;z-index:-1;animation:float 14s ease-in-out infinite}
.o1{width:320px;height:320px;background:var(--brand);left:-80px;top:40px}
.o2{width:280px;height:280px;background:var(--brand2);right:-60px;top:120px;animation-delay:-4s}
.o3{width:200px;height:200px;background:var(--accent);left:45%;bottom:-60px;animation-delay:-8s;opacity:.35}
@keyframes float{50%{transform:translateY(-30px) scale(1.08)}}

/* 3D scene */
.hero-scene{perspective:1100px;display:grid;place-items:center;min-height:420px}

/* marquee */
.marquee{overflow:hidden;border-block:1px solid var(--glass-b);background:var(--glass);padding:.9rem 0}
.track{display:flex;gap:2.5rem;width:max-content;animation:slide 40s linear infinite;font-weight:700;color:var(--muted)}
.track span::before{content:"✦ ";color:var(--brand)}
@keyframes slide{to{transform:translateX(-50%)}}

/* sections / cards */
.section{padding:3.2rem 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:1.4rem}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);margin:0}
.link-more{font-weight:700}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.3rem}
.card{overflow:hidden;display:flex;flex-direction:column;transform-style:preserve-3d;transition:transform .2s ease-out,box-shadow .3s}
.card:hover{box-shadow:0 30px 60px -22px rgba(109,40,217,.5)}
.card-media img,.yt-facade img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card-body{padding:1rem 1.1rem 1.2rem}
.card-body h3{font-size:1.1rem;margin:.4rem 0}
.card-body h3 a{color:var(--ink)}
.card-body p{margin:0;color:var(--muted);font-size:.92rem}
.tag{display:inline-block;font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.tag-free{color:#059669}.tag-paid{color:var(--accent)}
.empty{padding:1.4rem;color:var(--muted)}
.yt-facade{position:relative;display:block;width:100%;aspect-ratio:16/10;padding:0;border:0;cursor:pointer;background:linear-gradient(135deg,var(--brand),var(--brand2));overflow:hidden}
.yt-frame .yt-facade{aspect-ratio:16/9;border-radius:var(--r)}
.yt-facade iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.play{position:absolute;inset:0;margin:auto;width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.92);box-shadow:0 10px 30px rgba(0,0,0,.35);transition:transform .2s}
.play::after{content:"";position:absolute;left:25px;top:19px;border-left:20px solid var(--brand);border-block:13px solid transparent}
.yt-facade:hover .play{transform:scale(1.1)}

/* bento */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:1.1rem}
.b{padding:1.4rem;transition:transform .2s ease-out}
.b-wide{grid-column:span 2}
.b h3{margin-bottom:.3rem}.b p{margin:0;color:var(--muted)}

/* cta band */
.cta-band{padding:clamp(1.8rem,5vw,3.2rem);text-align:center;background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 85%,transparent),color-mix(in srgb,var(--brand2) 75%,transparent));color:#fff;border:0}
.cta-band p{opacity:.92;max-width:52ch;margin:.4rem auto 1.4rem}
.cta-band .btn-primary{background:#fff;color:var(--brand);box-shadow:0 14px 30px -12px rgba(0,0,0,.5)}

/* pages */
.page-head{margin-bottom:1.2rem}
.page-head h1{font-size:clamp(1.8rem,4vw,2.8rem)}
.article{padding:clamp(1.2rem,4vw,2.4rem)}
.entry{font-size:1.04rem}
.entry img,.entry iframe,.entry video{border-radius:14px;max-width:100%}
.entry h2,.entry h3{margin-top:1.6em}
.hero-img{border-radius:14px;margin-bottom:1rem}
.pager .nav-links{display:flex;gap:.4rem;margin-top:2rem;flex-wrap:wrap}
.pager .page-numbers{padding:.5rem .9rem;border-radius:12px;background:var(--glass);border:1px solid var(--glass-b);color:var(--ink)}
.pager .current{background:var(--brand);color:#fff}
.widget{padding:1.2rem;margin-bottom:1rem}
input,select,textarea{font:inherit}
.search-form{display:flex;gap:.5rem}

/* registration */
.reg-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:2rem;align-items:start}
.reg-side h1{font-size:clamp(2rem,4vw,3rem)}
.ticks{list-style:none;padding:0;margin:1.4rem 0 0}
.ticks li{padding:.4rem 0 .4rem 1.9rem;position:relative}
.ticks li::before{content:"✓";position:absolute;left:0;color:#fff;background:var(--brand);width:1.35rem;height:1.35rem;border-radius:50%;display:grid;place-items:center;font-size:.8rem}
.reg-card{padding:clamp(1.2rem,3vw,2rem)}
.form{display:grid;gap:1rem}
.form label{display:grid;gap:.35rem;font-weight:700;font-size:.9rem}
.form input,.form select,.comments input,.comments textarea,.search-form input{width:100%;padding:.8rem .95rem;border-radius:13px;border:1px solid var(--glass-b);background:color-mix(in srgb,var(--bg) 70%,transparent);color:var(--ink)}
.form input:focus,.form select:focus{outline:2px solid var(--brand);border-color:transparent}
.two{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
.notice{padding:.8rem 1rem;border-radius:12px;margin-bottom:1rem;font-weight:600}
.notice.ok{background:#d1fae5;color:#065f46}.notice.err{background:#fee2e2;color:#991b1b}

/* footer */
.site-footer{margin-top:3rem;padding:3rem 0 1.2rem;background:var(--glass);border-top:1px solid var(--glass-b)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2rem}
.foot-menu{flex-direction:column;gap:.4rem}
.foot-menu a{color:var(--ink)}
.social{display:flex;gap:.8rem;flex-wrap:wrap}
.copy{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem;margin-top:2rem;padding-top:1rem;border-top:1px solid var(--glass-b);font-size:.88rem;color:var(--muted)}
.wa-float{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:max(16px,env(safe-area-inset-bottom));z-index:90;padding:.75rem 1.1rem;border-radius:99px;background:#22c55e;color:#fff!important;font-weight:800;text-decoration:none!important;box-shadow:0 14px 30px -10px rgba(34,197,94,.7)}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media (max-width:980px){
 .hero-grid,.reg-grid{grid-template-columns:1fr}
 .hero-scene{min-height:360px;order:-1}
 .bento{grid-template-columns:repeat(2,1fr)}
 .foot-grid{grid-template-columns:1fr 1fr}
 .burger{display:flex}
 .hide-sm{display:none}
 .nav{position:fixed;inset:calc(var(--hh) + env(safe-area-inset-top)) 0 auto 0;margin:0;padding:1rem;background:var(--bg);border-bottom:1px solid var(--glass-b);box-shadow:var(--shadow);transform:translateY(-130%);opacity:0;transition:.3s;max-height:calc(100dvh - var(--hh));overflow:auto}
 .nav.open{transform:none;opacity:1}
 .menu{flex-direction:column}
 .nav-cta-mobile{display:flex;gap:.6rem;margin-top:1rem}
 .nav-cta-mobile .btn{flex:1}
 .menu .sub-menu{position:static;display:block;box-shadow:none;border:0;padding-left:1rem}
 .actions{margin-left:auto}
}
@media (max-width:600px){
 .stats{grid-template-columns:repeat(2,1fr)}
 .bento{grid-template-columns:1fr}.b-wide{grid-column:auto}
 .two{grid-template-columns:1fr}
 .foot-grid{grid-template-columns:1fr}
 .brand-text small{display:none}
}
@media (prefers-reduced-motion:reduce){
 *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
 .reveal{opacity:1;transform:none}
}
@supports (animation-timeline:scroll()){
 .progress{animation:grow linear both;animation-timeline:scroll(root)}
 @keyframes grow{to{transform:scaleX(1)}}
}

/* subject fan (3D, clickable) */
.fan{--rx:0deg;--ry:0deg;position:relative;width:min(340px,84vw);height:430px;transform-style:preserve-3d;transform:rotateX(var(--rx)) rotateY(var(--ry));transition:transform .15s ease-out}
.fc{position:absolute;left:0;right:0;top:calc(var(--i)*68px);height:128px;display:flex;flex-direction:column;gap:.1rem;padding:.75rem 1.2rem;color:var(--ink);text-decoration:none!important;border-left:6px solid var(--c);transform:translateZ(calc(var(--i)*24px)) rotateY(-14deg);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s}
.fc b{font-size:.72rem;letter-spacing:.12em;color:var(--c)}
.fc span{font-weight:800;font-size:1.08rem;line-height:1.2}
.fc small{color:var(--muted);font-size:.78rem}
.fc:hover,.fc:focus-visible{transform:translateZ(140px) translateX(-16px) rotateY(0) scale(1.04);z-index:10;box-shadow:0 30px 60px -20px var(--c)}
.fan-hint{position:absolute;left:0;right:0;bottom:-34px;text-align:center;font-size:.8rem;color:var(--muted)}
.avatar{width:84px;height:84px;border-radius:50%;object-fit:cover;border:3px solid var(--glass-b);box-shadow:var(--shadow);margin-bottom:.8rem}

/* subject detail sections */
.detail{padding:2.4rem 0}
.detail-head{text-align:center;max-width:640px;margin:0 auto 1rem}
.detail-grid{display:grid;grid-template-columns:auto 1.2fr 1fr;gap:2rem;align-items:center;padding:clamp(1.2rem,3vw,2.2rem);scroll-margin-top:calc(var(--hh) + 16px)}
.detail.alt .detail-grid{grid-template-columns:1fr 1.2fr auto}
.detail.alt .d-num{order:3}.detail.alt .d-side{order:1}
.d-num{font-size:clamp(3.5rem,9vw,7rem);font-weight:900;line-height:1;color:transparent;-webkit-text-stroke:2px var(--c);opacity:.7;transform:translateZ(0)}
.detail h2{font-size:clamp(1.5rem,3vw,2.1rem)}
.topics{list-style:none;margin:1rem 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:.5rem}
.topics li{padding:.5rem .8rem;border-radius:12px;background:color-mix(in srgb,var(--c) 10%,transparent);font-weight:600;font-size:.92rem;opacity:0;transform:translateY(14px)}
.reveal.in .topics li{animation:pop .5s cubic-bezier(.2,.8,.2,1) forwards;animation-delay:calc(var(--k,0)*90ms + 200ms)}
.topics li:nth-child(1){--k:1}.topics li:nth-child(2){--k:2}.topics li:nth-child(3){--k:3}.topics li:nth-child(4){--k:4}.topics li:nth-child(5){--k:5}.topics li:nth-child(6){--k:6}
@keyframes pop{to{opacity:1;transform:none}}
.d-side{padding:1.4rem;border-radius:var(--r);background:var(--glass);border:1px solid var(--glass-b);border-top:5px solid var(--c)}
.d-side h4{margin:0 0 .6rem}
.d-side ul{margin:0;padding-left:1.1rem;color:var(--muted)}
.d-side li{margin:.3rem 0}
.detail-grid:target,.detail:target .detail-grid{outline:3px solid var(--c);outline-offset:4px}
@media (max-width:980px){
 .detail-grid,.detail.alt .detail-grid{grid-template-columns:1fr}
 .detail.alt .d-num,.detail.alt .d-side{order:0}
 .d-num{font-size:3.5rem}
 .fan{height:410px;margin-bottom:2.4rem}
}
@media (max-width:600px){.topics{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.topics li{opacity:1;transform:none}}
/* affordance + scroll motion */
@property --glow{syntax:"<number>";inherits:false;initial-value:0}
h1,h2,h3{text-wrap:balance}
.fc{cursor:pointer;animation:peek 7s ease-in-out infinite;animation-delay:calc(var(--i)*.55s + 1.6s)}
@keyframes peek{0%,16%,100%{translate:0 0}6%,11%{translate:-16px 0;box-shadow:0 0 0 3px color-mix(in srgb,var(--c) 45%,transparent),0 26px 46px -18px var(--c)}}
.fc::after{content:"→";position:absolute;right:1.1rem;top:.7rem;font-weight:800;color:var(--c);animation:nudge 1.4s ease-in-out infinite}
@keyframes nudge{50%{translate:7px 0}}
.fan.touched .fc,.fc:hover,.fc:focus-visible{animation:none}
.fan-hint{display:flex;align-items:center;justify-content:center;gap:.6rem;font-weight:700;color:var(--ink)}
.dot{width:10px;height:10px;border-radius:50%;background:var(--brand);animation:ping 1.6s ease-out infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--brand) 70%,transparent)}100%{box-shadow:0 0 0 16px transparent}}
.scroll-cue{display:flex;flex-direction:column;align-items:center;gap:.4rem;margin:2.2rem auto 0;width:max-content;font-size:.8rem;font-weight:700;color:var(--muted);text-decoration:none!important}
.scroll-cue i{width:22px;height:36px;border:2px solid var(--muted);border-radius:12px;position:relative}
.scroll-cue i::after{content:"";position:absolute;left:50%;top:6px;width:4px;height:8px;margin-left:-2px;border-radius:2px;background:var(--brand);animation:wheel 1.6s ease-in-out infinite}
@keyframes wheel{0%{translate:0 0;opacity:1}100%{translate:0 12px;opacity:0}}
.detail{perspective:1200px}

/* scroll-driven entrances (Baseline since Oct 2026), different style per block */
@media (prefers-reduced-motion:no-preference){
@supports (animation-timeline:view()){
 .reveal{opacity:1;transform:none;transition:none}
 .detail-grid,.grid .card,.bento .b{animation-duration:1ms;animation-timing-function:linear;animation-fill-mode:both;animation-timeline:view();animation-range:entry 0% cover 38%}
 .detail-grid[data-fx=slide-l]{animation-name:fx-l}
 .detail-grid[data-fx=slide-r]{animation-name:fx-r}
 .detail-grid[data-fx=zoom]{animation-name:fx-zoom}
 .detail-grid[data-fx=flip]{animation-name:fx-flip}
 .detail-grid[data-fx=reveal]{animation-name:fx-circle}
 .grid .card:nth-child(3n+1){animation-name:card-l}
 .grid .card:nth-child(3n+2){animation-name:card-up}
 .grid .card:nth-child(3n+3){animation-name:card-r}
 .bento .b:nth-child(odd){animation-name:fx-flip}
 .bento .b:nth-child(even){animation-name:fx-zoom}
 .d-num{animation:numpar linear both;animation-timeline:view();animation-duration:1ms}
 @keyframes fx-l{from{opacity:0;translate:-140px 0;rotate:0 1 0 -28deg;filter:blur(8px)}}
 @keyframes fx-r{from{opacity:0;translate:140px 0;rotate:0 1 0 28deg;filter:blur(8px)}}
 @keyframes fx-zoom{from{opacity:0;scale:.72;filter:blur(14px)}}
 @keyframes fx-flip{from{opacity:0;rotate:1 0 0 -55deg;translate:0 70px}}
 @keyframes fx-circle{from{opacity:.2;clip-path:circle(6% at 50% 50%)}to{opacity:1;clip-path:circle(150% at 50% 50%)}}
 @keyframes card-l{from{opacity:0;translate:-60px 20px;rotate:0 0 1 -6deg}}
 @keyframes card-up{from{opacity:0;translate:0 70px;scale:.9}}
 @keyframes card-r{from{opacity:0;translate:60px 20px;rotate:0 0 1 6deg}}
 @keyframes numpar{from{translate:0 50px}to{translate:0 -50px}}
}
@supports (animation-delay:calc(sibling-index()*1ms)){
 .topics li{animation-delay:calc(sibling-index()*90ms + 200ms)}
}}