/* Higher Studies design system
   Layout: dark campus, white type, one lime accent from the crest. Calm grids, generous space, motion only where it explains. */
:root{
  --bg:#070708;
  --bg-2:#0c0c0e;
  --surface:#111114;
  --surface-2:#17171b;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --text:#f4f4f5;
  --muted:#a1a1aa;
  --faint:#6b6b74;
  --lime:#d5fb34;
  --lime-soft:rgba(213,251,52,.12);
  --lime-line:rgba(213,251,52,.35);
  --on-lime:#0a0a0a;
  --red:#ff5c7a;
  --f-sans:"Geist","Segoe UI",system-ui,-apple-system,sans-serif;
  --f-mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --f-serif:"Instrument Serif","Times New Roman",Georgia,serif;
  --r:16px; --r-sm:10px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --max:1180px;
  color-scheme:dark;
}
@view-transition{navigation:auto}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{margin:0}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{background:var(--bg);color:var(--text);font-family:var(--f-sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--bg);z-index:80}
main{flex:1}
img{max-width:100%;height:auto;display:block}
[hidden]{display:none!important}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0;padding:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px}
::selection{background:var(--lime);color:var(--on-lime)}
h1,h2,h3,h4{margin:0;text-wrap:balance;font-weight:600;letter-spacing:-.025em;line-height:1.1}
p{margin:0}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.mono{font-family:var(--f-mono)}
.serif{font-family:var(--f-serif);font-style:italic;font-weight:400;letter-spacing:0}
.lime{color:var(--lime)}
.muted{color:var(--muted)}
.tnum{font-variant-numeric:tabular-nums}

/* type scale */
.display{font-size:clamp(40px,6.6vw,84px);line-height:1;letter-spacing:-.045em;font-weight:600}
.h2{font-size:clamp(30px,4.2vw,50px);line-height:1.05;letter-spacing:-.035em}
.h3{font-size:clamp(20px,2vw,24px);letter-spacing:-.02em}
.lede{font-size:clamp(17px,1.5vw,19px);color:var(--muted);max-width:60ch;line-height:1.6}
.kicker{font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:inline-flex;align-items:center;gap:10px}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;height:46px;padding:0 20px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid var(--line-2);background:var(--surface);transition:transform .25s var(--ease),background .2s,border-color .2s,color .2s;white-space:nowrap;position:relative;overflow:hidden}
.btn:hover{border-color:rgba(255,255,255,.3);background:var(--surface-2)}
.btn:active{transform:scale(.98)}
.btn svg{width:16px;height:16px;flex:none}
.btn-lime{background:var(--lime);color:var(--on-lime);border-color:var(--lime)}
.btn-lime:hover{background:#e3ff5e;border-color:#e3ff5e}
.btn-lime::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.55) 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s var(--ease)}
.btn-lime:hover::after{transform:translateX(120%)}
.btn-ghost{background:transparent}
.btn-sm{height:38px;padding:0 15px;font-size:14px}
.btn .arr{transition:transform .25s var(--ease)}
.btn:hover .arr{transform:translateX(3px)}
.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}

/* nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:70;background:rgba(7,7,8,.72);backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px);border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.nav.scrolled{border-bottom-color:var(--line);background:rgba(7,7,8,.86)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:-.02em;font-size:16px;flex:none}
.brand img{height:30px;width:auto}
.brand span small{display:block;font-family:var(--f-mono);font-weight:500;font-size:10.5px;color:var(--faint);letter-spacing:.1em;line-height:1.1}
.brand span{line-height:1.15}
.nav-links{display:flex;gap:4px;margin-left:18px}
.nav-links a{font-size:14px;font-weight:500;color:var(--muted);padding:8px 13px;border-radius:999px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--text);background:var(--surface)}
.nav-links a[aria-current="page"]{color:var(--text);background:var(--surface-2)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.progress-pill{display:flex;align-items:center;gap:9px;font-family:var(--f-mono);font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:6px 12px 6px 7px;transition:border-color .2s}
.progress-pill:hover{border-color:var(--line-2)}
.ring{--p:0;width:22px;height:22px;border-radius:50%;background:conic-gradient(var(--lime) calc(var(--p)*1%),var(--surface-2) 0);display:grid;place-items:center;flex:none}
.ring::after{content:"";width:14px;height:14px;border-radius:50%;background:var(--bg)}
.icon-btn{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);transition:background .2s,border-color .2s,color .2s;flex:none}
.icon-btn:hover{background:var(--text);color:var(--bg);border-color:var(--text)}
.icon-btn svg{width:15px;height:15px;fill:currentColor}
.menu-btn{display:none}
.menu-btn svg{fill:none;stroke:currentColor;stroke-width:2}
.mobile-menu{display:none}
@media (max-width:920px){
  .nav-links{display:none}
  .menu-btn{display:grid}
  .mobile-menu{display:block;position:fixed;inset:calc(68px + env(safe-area-inset-top,0px)) 0 auto 0;z-index:69;background:rgba(7,7,8,.97);border-bottom:1px solid var(--line);padding:12px max(20px,env(safe-area-inset-right,0px)) 22px max(20px,env(safe-area-inset-left,0px));transform:translateY(-8px);opacity:0;visibility:hidden;transition:.25s var(--ease)}
  .mobile-menu.open{transform:none;opacity:1;visibility:visible}
  .mobile-menu a{display:block;padding:14px 4px;border-bottom:1px solid var(--line);font-size:17px;font-weight:500}
  .mobile-menu .btn{margin-top:16px;width:100%}
}
@media (max-width:560px){.progress-pill span{display:none}.progress-pill{padding:6px}.nav-right .btn{display:none}.brand span small{display:none}}

/* scroll progress */
.scrollbar{position:fixed;left:0;top:env(safe-area-inset-top,0px);height:2px;width:100%;background:var(--lime);transform-origin:0 50%;transform:scaleX(0);z-index:90;pointer-events:none}

/* sections */
.section{padding-block:clamp(80px,10vw,132px);position:relative}
.section + .section{border-top:1px solid var(--line)}
.section-head{display:grid;gap:16px;margin-bottom:clamp(36px,5vw,56px);max-width:760px}
.section-head.center{margin-inline:auto;text-align:center;justify-items:center}
.split-head{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:clamp(36px,5vw,56px)}
.split-head .section-head{margin-bottom:0}

/* card */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);position:relative}
.card-hover{transition:border-color .3s,transform .4s var(--ease),background .3s}
.card-hover:hover{border-color:var(--line-2);transform:translateY(-3px)}
.spot{--x:50%;--y:50%}
.spot::before{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(420px circle at var(--x) var(--y),rgba(213,251,52,.07),transparent 45%);opacity:0;transition:opacity .3s;pointer-events:none}
.spot:hover::before{opacity:1}

/* badges */
.badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding:4px 9px;border-radius:999px;border:1px solid var(--line-2);color:var(--muted);white-space:nowrap}
.badge.open{color:var(--lime);border-color:var(--lime-line);background:var(--lime-soft)}
.badge.done{color:var(--on-lime);background:var(--lime);border-color:var(--lime)}
.badge.locked{color:var(--faint)}
.badge svg{width:11px;height:11px}

/* reveal */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.08s}.js .reveal.d2{transition-delay:.16s}.js .reveal.d3{transition-delay:.24s}.js .reveal.d4{transition-delay:.32s}

/* ===== HOME ===== */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 30%,transparent 75%);opacity:.6;animation:gridpan 24s linear infinite}
@keyframes gridpan{to{background-position:64px 64px}}
.hero-glow{position:absolute;width:720px;height:720px;right:-180px;top:-260px;border-radius:50%;background:radial-gradient(circle,rgba(213,251,52,.13),transparent 62%);filter:blur(10px);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center;padding-block:clamp(64px,9vw,120px) clamp(64px,8vw,110px)}
.hero-copy{display:grid;gap:26px;align-content:start}
.hero h1 .serif{color:var(--lime)}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap}
.hero-meta{display:flex;gap:22px;flex-wrap:wrap;font-family:var(--f-mono);font-size:12.5px;color:var(--faint)}
.hero-meta b{color:var(--text);font-weight:500}
.word{display:inline-block;overflow:hidden;vertical-align:bottom;padding-bottom:.06em}
.word > span{display:inline-block;animation:wordUp 1s var(--ease) both}
@keyframes wordUp{from{transform:translateY(105%)}to{transform:none}}
.fade-up{animation:fadeUp .9s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

.hero-visual{position:relative;aspect-ratio:1/1;max-width:520px;width:100%;justify-self:end}
.orbit{position:absolute;inset:0;width:100%;height:100%}
.orbit .o1{transform-origin:260px 260px;animation:spin 30s linear infinite}
.orbit .o2{transform-origin:260px 260px;animation:spin 46s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.crest{position:absolute;left:50%;top:50%;width:58%;transform:translate(-50%,-50%);filter:drop-shadow(0 30px 60px rgba(0,0,0,.6));animation:float 7s ease-in-out infinite}
@keyframes float{50%{transform:translate(-50%,-53%)}}
.float-card{position:absolute;background:rgba(17,17,20,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line-2);border-radius:14px;padding:11px 14px;display:flex;gap:11px;align-items:center;font-size:13px;box-shadow:0 20px 50px -20px rgba(0,0,0,.8);animation:bob 6s ease-in-out infinite}
.float-card .ic{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--lime-soft);color:var(--lime);flex:none}
.float-card .ic svg{width:15px;height:15px}
.float-card b{display:block;font-weight:600;font-size:13px;line-height:1.2}
.float-card small{color:var(--faint);font-family:var(--f-mono);font-size:11px}
.fc1{left:-4%;top:14%;animation-delay:-1s}.fc2{right:-6%;top:42%;animation-delay:-3s}.fc3{left:6%;bottom:10%;animation-delay:-4.5s}
@keyframes bob{50%{transform:translateY(-9px)}}
@media (max-width:920px){.hero .wrap{grid-template-columns:1fr}.hero-visual{justify-self:center;max-width:420px}.fc2{right:0}.fc1{left:0}}
@media (max-width:480px){.float-card{font-size:12px;padding:9px 11px}.fc3{display:none}}

.marquee{overflow:hidden;border-bottom:1px solid var(--line);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee-track{display:flex;gap:44px;width:max-content;padding-block:18px;animation:marq 48s linear infinite;font-family:var(--f-mono);font-size:13px;color:var(--faint)}
.marquee-track span{display:inline-flex;gap:10px;align-items:center;white-space:nowrap}
.marquee-track b{color:var(--text);font-weight:500}
.marquee-track i{font-style:normal;color:var(--lime)}
@keyframes marq{to{transform:translateX(-50%)}}

.stats-band{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--r);background:var(--bg-2)}
.stats-band > div{padding:26px 26px 24px;border-right:1px solid var(--line);display:grid;gap:6px}
.stats-band > div:last-child{border-right:0}
.stats-band .n{font-size:clamp(30px,3.6vw,44px);font-weight:600;letter-spacing:-.04em;font-variant-numeric:tabular-nums;line-height:1}
.stats-band .l{font-size:13.5px;color:var(--muted)}
@media (max-width:760px){.stats-band{grid-template-columns:repeat(2,minmax(0,1fr))}.stats-band>div:nth-child(2){border-right:0}.stats-band>div:nth-child(-n+2){border-bottom:1px solid var(--line)}}

.how{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.how .card{padding:30px;display:grid;gap:14px;align-content:start;overflow:hidden}
.how .step-n{font-family:var(--f-mono);font-size:12px;color:var(--faint)}
.how h3{font-size:21px}
.how p{color:var(--muted);font-size:15px}
.how .art{height:120px;border-radius:12px;background:var(--bg-2);border:1px solid var(--line);margin-bottom:6px;position:relative;overflow:hidden}
@media (max-width:860px){.how{grid-template-columns:1fr}}
/* how art */
.art-read .ln{position:absolute;left:18px;height:7px;border-radius:4px;background:var(--surface-2)}
.art-read .ln.hl{background:var(--lime);animation:readln 3.4s var(--ease) infinite}
@keyframes readln{0%{width:0}60%,100%{width:46%}}
.art-exam{display:flex;gap:8px;align-items:center;justify-content:center}
.art-exam span{width:42px;height:42px;border-radius:10px;border:1px solid var(--line-2);display:grid;place-items:center;font-family:var(--f-mono);font-size:13px;color:var(--muted)}
.art-exam span.ok{animation:okpop 3.4s infinite}
.art-exam span.ok:nth-child(2){animation-delay:.35s}.art-exam span.ok:nth-child(3){animation-delay:.7s}
@keyframes okpop{0%,20%{background:transparent;color:var(--muted);border-color:var(--line-2)}35%,90%{background:var(--lime);color:var(--on-lime);border-color:var(--lime)}100%{background:transparent}}
.art-lock{display:grid;place-items:center}
.art-lock svg{width:54px;height:54px}
.art-lock .shackle{transform-origin:20px 12px;animation:unlock 3.4s var(--ease) infinite}
@keyframes unlock{0%,30%{transform:none}50%,85%{transform:translateY(-5px) rotate(-22deg)}100%{transform:none}}

/* ladder (Bachelors syllabus) */
.ladder{display:grid;gap:12px;position:relative}
.ladder::before{content:"";position:absolute;left:27px;top:28px;bottom:28px;width:1px;background:var(--line-2)}
.rung{display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:20px;align-items:center;padding:18px 22px 18px 0;border-radius:var(--r);transition:background .3s}
.rung:hover{background:var(--surface)}
.rung .node{width:56px;height:56px;border-radius:50%;background:var(--bg);border:1px solid var(--line-2);display:grid;place-items:center;font-family:var(--f-mono);font-size:12px;color:var(--muted);position:relative;z-index:1;transition:.3s}
.rung.is-done .node{background:var(--lime);border-color:var(--lime);color:var(--on-lime)}
.rung.is-open .node{border-color:var(--lime);color:var(--lime);box-shadow:0 0 0 6px var(--lime-soft)}
.rung h3{font-size:19px}
.rung p{color:var(--muted);font-size:14.5px;margin-top:4px}
.rung .meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
@media (max-width:640px){.rung{grid-template-columns:56px minmax(0,1fr);padding-right:8px}.rung .meta{grid-column:2;justify-content:flex-start}}

/* programmes */
.programmes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:960px){.programmes{grid-template-columns:1fr}}
.prog{padding:28px;display:grid;gap:18px;align-content:start;overflow:hidden}
.prog-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.prog .code{font-family:var(--f-mono);font-size:12px;color:var(--faint)}
.prog h3{font-size:24px}
.prog p{color:var(--muted);font-size:15px}
.prog ul{list-style:none;margin:0;padding:0;display:grid;gap:0;border-top:1px solid var(--line)}
.prog li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.prog li span:last-child{font-family:var(--f-mono);font-size:12px;color:var(--faint);white-space:nowrap}
.bar{height:4px;border-radius:4px;background:var(--surface-2);overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--lime);border-radius:4px;transition:width 1.2s var(--ease)}
.prog.sealed > *:not(.seal){filter:saturate(0) opacity(.55)}
.seal-chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--faint)}

/* alumni */
.alumni{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:960px){.alumni{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.alumni{grid-template-columns:1fr}}
.alum{padding:26px;display:grid;gap:18px;overflow:hidden}
.alum-head{display:flex;gap:14px;align-items:center}
.av{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:15px;background:var(--text);color:var(--bg);flex:none;position:relative}
.av::after{content:"";position:absolute;right:-2px;bottom:-2px;width:16px;height:16px;border-radius:50%;background:var(--lime);border:3px solid var(--surface)}
.alum h3{font-size:17px}
.alum .deg{font-family:var(--f-mono);font-size:11.5px;color:var(--faint)}
.alum .journey{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:end;padding:16px 0;border-block:1px solid var(--line)}
.alum .journey small{display:block;font-family:var(--f-mono);font-size:11px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}
.alum .journey b{font-size:24px;font-weight:600;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.alum .journey .to b{color:var(--lime)}
.alum .journey svg{width:18px;height:18px;color:var(--faint);margin-bottom:6px}
.alum blockquote{margin:0;font-family:var(--f-serif);font-style:italic;font-size:20px;line-height:1.35}
.alum .thesis{font-size:13.5px;color:var(--muted)}
.alum .thesis b{display:block;font-family:var(--f-mono);font-weight:500;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:3px}
.fineprint{font-family:var(--f-mono);font-size:12px;color:var(--faint);margin-top:22px}

/* token teaser */
.teaser{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;padding:clamp(28px,4vw,48px);overflow:hidden;background:linear-gradient(135deg,var(--surface),var(--bg-2))}
.teaser::after{content:"";position:absolute;right:-80px;top:-120px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(213,251,52,.16),transparent 65%);pointer-events:none}
.teaser .big{font-size:clamp(48px,8vw,104px);font-weight:700;letter-spacing:-.05em;line-height:.9}
.teaser .big span{color:var(--lime)}
.teaser-actions{display:grid;gap:10px;position:relative;z-index:1}
@media (max-width:760px){.teaser{grid-template-columns:1fr}}

/* CTA */
.cta{text-align:center;display:grid;justify-items:center;gap:24px}
.cta .display .serif{color:var(--lime)}

/* faq */
.faq{border-top:1px solid var(--line);max-width:860px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;font-size:17px;font-weight:500}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{width:28px;height:28px;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;flex:none;transition:transform .3s var(--ease),background .2s}
.faq details[open] summary .pm{transform:rotate(45deg);background:var(--lime);color:var(--on-lime);border-color:var(--lime)}
.faq details p{color:var(--muted);padding:0 0 22px;max-width:68ch}

/* footer */
.footer{border-top:1px solid var(--line);padding-block:56px 40px;background:var(--bg)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,minmax(0,1fr));gap:32px}
.footer h4{font-size:13px;font-family:var(--f-mono);font-weight:500;color:var(--faint);text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:9px;font-size:14.5px;color:var(--muted)}
.footer ul a:hover{color:var(--text)}
.footer .about{display:grid;gap:14px;align-content:start;max-width:34ch}
.footer .about p{color:var(--muted);font-size:14.5px}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:grid;gap:10px;font-size:12.5px;color:var(--faint)}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}.footer .about{grid-column:1/-1}}

/* ===== SCHOOL ===== */
.page-head{padding-block:clamp(56px,7vw,92px) clamp(40px,5vw,60px);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-head .hero-grid{opacity:.4}
.page-head .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end}
.page-head .copy{display:grid;gap:18px}
@media (max-width:760px){.page-head .wrap{grid-template-columns:1fr}}
.overall{display:flex;gap:20px;align-items:center;padding:20px 24px;min-width:280px}
.big-ring{--p:0;width:84px;height:84px;border-radius:50%;background:conic-gradient(var(--lime) calc(var(--p)*1%),var(--surface-2) 0);display:grid;place-items:center;flex:none;transition:--p 1s}
.big-ring span{width:68px;height:68px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-weight:600;font-size:18px;font-variant-numeric:tabular-nums}
.overall b{display:block;font-size:17px}
.overall small{color:var(--muted);font-size:13.5px}

.tabs{display:flex;gap:6px;padding:5px;border:1px solid var(--line);border-radius:999px;width:fit-content;max-width:100%;overflow-x:auto;background:var(--bg-2);margin-bottom:36px}
.tab{padding:9px 18px;border-radius:999px;font-size:14px;font-weight:500;color:var(--muted);display:flex;gap:8px;align-items:center;white-space:nowrap;transition:background .25s,color .25s}
.tab[aria-selected="true"]{background:var(--text);color:var(--bg)}
.tab svg{width:12px;height:12px}
.prog-intro{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:end;margin-bottom:28px}
.prog-intro h2{font-size:clamp(26px,3.4vw,38px)}
.prog-intro p{color:var(--muted);margin-top:10px;max-width:62ch}
@media (max-width:700px){.prog-intro{grid-template-columns:1fr}}
.units{display:grid;gap:14px}
.unit{overflow:hidden}
.unit-head{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:20px;align-items:center;padding:22px 24px;width:100%;text-align:left}
.unit-num{width:52px;height:52px;border-radius:14px;border:1px solid var(--line-2);display:grid;place-items:center;font-family:var(--f-mono);font-size:12px;color:var(--muted);flex:none}
.unit.is-done .unit-num{background:var(--lime);border-color:var(--lime);color:var(--on-lime)}
.unit.is-open .unit-num{border-color:var(--lime-line);color:var(--lime)}
.unit-head .uh{display:block;font-size:19px;font-weight:600;letter-spacing:-.02em;line-height:1.2}
.unit-head .up{display:block;font-size:14px;color:var(--muted);margin-top:3px}
.unit-right{display:flex;gap:14px;align-items:center}
.chev{width:32px;height:32px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;transition:transform .35s var(--ease)}
.chev svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2}
.unit.expanded .chev{transform:rotate(180deg)}
.unit-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .45s var(--ease)}
.unit.expanded .unit-body{grid-template-rows:1fr}
.unit-body > div{overflow:hidden}
.lesson-list{list-style:none;margin:0;padding:0 24px 18px;display:grid}
.lesson-row{display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:14px;align-items:center;padding:13px 12px;border-radius:10px;transition:background .2s}
.lesson-row:hover{background:var(--surface-2)}
.lesson-row .tick{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--line-2);display:grid;place-items:center}
.lesson-row.done .tick{background:var(--lime);border-color:var(--lime);color:var(--on-lime)}
.lesson-row .tick svg{width:12px;height:12px}
.lesson-row .t{font-size:15px;font-weight:500}
.lesson-row .t small{display:block;color:var(--faint);font-weight:400;font-size:13px}
.lesson-row .dur{font-family:var(--f-mono);font-size:12px;color:var(--faint)}
.lesson-row.exam .t{color:var(--lime)}
.lesson-row.exam .tick{border-color:var(--lime-line)}
.unit.is-locked .unit-head{cursor:default}
.unit.is-locked .unit-head .uh,.unit.is-locked .unit-head .up{opacity:.55}
@media (max-width:620px){.unit-head{grid-template-columns:auto minmax(0,1fr);padding:18px}.unit-right{grid-column:1/-1;justify-content:space-between}.lesson-list{padding:0 10px 14px}}

/* diploma */
.registry{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:32px;align-items:center}
@media (max-width:900px){.registry{grid-template-columns:1fr}}
.field{display:grid;gap:8px}
.field label{font-size:13px;color:var(--muted);font-weight:500}
.input,select.input{height:48px;border-radius:12px;background:var(--bg-2);border:1px solid var(--line-2);color:var(--text);padding:0 14px;font:inherit;width:100%;transition:border-color .2s}
.input:focus{outline:none;border-color:var(--lime)}
.diploma-wrap{position:relative;border-radius:18px;overflow:hidden}
.diploma{aspect-ratio:1.414;width:100%;background:#fafaf7;color:#111;border-radius:18px;display:grid;align-content:center;justify-items:center;text-align:center;gap:clamp(6px,1vw,12px);padding:clamp(22px,4vw,48px);position:relative;overflow:hidden}
.diploma::before{content:"";position:absolute;inset:14px;border:1.5px solid #111;border-radius:10px}
.diploma::after{content:"";position:absolute;inset:20px;border:1px solid rgba(17,17,17,.25);border-radius:7px}
.diploma .d-logo{width:clamp(54px,9vw,92px);filter:invert(1) hue-rotate(180deg) brightness(.9)}
.diploma .d-uni{font-weight:700;letter-spacing:.18em;font-size:clamp(10px,1.4vw,14px)}
.diploma .d-small{font-family:var(--f-serif);font-style:italic;font-size:clamp(12px,1.6vw,17px);color:#555}
.diploma .d-name{font-family:var(--f-serif);font-size:clamp(28px,5vw,56px);line-height:1;overflow-wrap:anywhere;max-width:90%}
.diploma .d-deg{font-weight:600;font-size:clamp(12px,1.8vw,19px);letter-spacing:-.01em}
.diploma .d-meta{display:flex;justify-content:space-between;width:78%;font-family:var(--f-mono);font-size:clamp(8px,1.1vw,11px);color:#666;margin-top:6px}
.diploma .d-seal{position:absolute;right:8%;bottom:10%;width:clamp(48px,8vw,82px);aspect-ratio:1;border-radius:50%;background:#d5fb34;display:grid;place-items:center;font-weight:800;font-size:clamp(7px,1vw,11px);letter-spacing:.06em;color:#111;transform:rotate(-14deg);box-shadow:0 0 0 3px #fafaf7,0 0 0 4px #111;z-index:1}
.veil{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:24px;background:rgba(7,7,8,.82);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:opacity .6s,visibility .6s;z-index:2}
.veil .in{display:grid;gap:12px;justify-items:center;max-width:40ch}
.veil h3{font-size:20px}
.veil p{color:var(--muted);font-size:14.5px}
.lock-ic{width:52px;height:52px;border-radius:14px;border:1px solid var(--line-2);display:grid;place-items:center;background:var(--surface)}
.lock-ic svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8}
.diploma-wrap.unlocked .veil{opacity:0;visibility:hidden}

/* ===== LESSON ===== */
.reader{display:grid;grid-template-columns:280px minmax(0,1fr);gap:56px;padding-block:40px 96px;align-items:start}
.side{position:sticky;top:calc(92px + env(safe-area-inset-top,0px));display:grid;gap:16px;max-height:calc(100vh - 120px);overflow:auto;padding-right:4px}
.side .prog-name{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.side h3{font-size:17px}
.side .bar{margin-top:4px}
.side ol{list-style:none;margin:0;padding:0;display:grid;gap:2px;border-left:1px solid var(--line)}
.side ol a{display:flex;gap:10px;align-items:flex-start;padding:8px 12px;margin-left:-1px;border-left:2px solid transparent;font-size:14px;color:var(--muted);transition:color .2s,border-color .2s,background .2s;border-radius:0 8px 8px 0}
.side ol a:hover{color:var(--text);background:var(--surface)}
.side ol a[aria-current="page"]{color:var(--text);border-left-color:var(--lime);background:var(--surface)}
.side ol a .s{width:16px;height:16px;border-radius:50%;border:1.5px solid var(--line-2);flex:none;margin-top:3px;display:grid;place-items:center}
.side ol a.done .s{background:var(--lime);border-color:var(--lime)}
.side ol a.done .s::after{content:"";width:6px;height:3px;border-left:1.5px solid #000;border-bottom:1.5px solid #000;transform:rotate(-45deg) translate(1px,-1px)}
.side ol a.exam{color:var(--lime)}
.side .other{font-size:13.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.side .other a{text-decoration:underline;text-underline-offset:3px}
.side-toggle{display:none}
@media (max-width:980px){
  .reader{grid-template-columns:1fr;gap:24px;padding-top:24px}
  .side{position:static;max-height:none;display:none;border:1px solid var(--line);border-radius:var(--r);padding:18px;background:var(--surface)}
  .side.open{display:grid}
  .side-toggle{display:flex;justify-content:space-between;align-items:center;width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);font-size:14px;font-weight:500}
}
.crumbs{display:flex;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--faint);margin-bottom:22px}
.crumbs a:hover{color:var(--text)}
.crumbs span[aria-hidden]{opacity:.5}
.article{max-width:720px;min-width:0}
.article-head{display:grid;gap:16px;padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:34px}
.article-head h1{font-size:clamp(32px,4.6vw,52px);letter-spacing:-.04em;line-height:1.04}
.article-head .meta{display:flex;gap:16px;flex-wrap:wrap;font-family:var(--f-mono);font-size:12.5px;color:var(--faint)}
.article-head .summary{font-size:19px;color:var(--muted);line-height:1.55}
.prose{font-size:17.5px;line-height:1.75;color:#d8d8dc}
.prose > * + *{margin-top:1.15em}
.prose h2{font-size:24px;color:var(--text);letter-spacing:-.025em;margin-top:2em;line-height:1.2}
.prose h3{font-size:19px;color:var(--text);margin-top:1.6em}
.prose strong{color:var(--text);font-weight:600}
.prose ul,.prose ol{padding-left:1.3em;display:grid;gap:.45em}
.prose li::marker{color:var(--lime)}
.prose code{font-family:var(--f-mono);font-size:.86em;background:var(--surface-2);border:1px solid var(--line);padding:2px 6px;border-radius:6px;color:var(--text)}
.prose a{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.note{border:1px solid var(--line);border-radius:14px;padding:18px 20px 18px 20px;background:var(--surface);display:grid;gap:6px;font-size:16px;line-height:1.6;position:relative;overflow:hidden}
.note::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--lime)}
.note b.k{font-family:var(--f-mono);font-size:11.5px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--lime)}
.note.warn::before{background:var(--red)} .note.warn b.k{color:var(--red)}
.note.term::before{background:var(--text)} .note.term b.k{color:var(--text)}
.formula{font-family:var(--f-mono);font-size:15px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:16px 18px;color:var(--text);overflow-x:auto;white-space:nowrap}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
.prose table{border-collapse:collapse;width:100%;font-size:15px;min-width:460px}
.prose th,.prose td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font-family:var(--f-mono);font-weight:500;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);background:var(--bg-2)}
.prose tr:last-child td{border-bottom:0}
.checklist{list-style:none;padding:0!important}
.checklist li{display:flex;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.checklist li::before{content:"";width:18px;height:18px;border-radius:5px;border:1.5px solid var(--lime);flex:none;margin-top:4px}
.lesson-foot{margin-top:56px;padding-top:28px;border-top:1px solid var(--line);display:grid;gap:22px}
.complete-row{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:20px 22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line)}
.complete-row b{display:block}
.complete-row small{color:var(--muted)}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pn a{padding:18px 20px;border:1px solid var(--line);border-radius:var(--r);display:grid;gap:4px;transition:border-color .2s,background .2s;min-width:0}
.pn a:hover{border-color:var(--line-2);background:var(--surface)}
.pn a small{font-family:var(--f-mono);font-size:11.5px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}
.pn a b{font-weight:500;overflow-wrap:anywhere}
.pn .next{text-align:right}
@media (max-width:560px){.pn{grid-template-columns:1fr}.pn .next{text-align:left}}
.locked-screen{padding:clamp(40px,6vw,72px) 0;display:grid;gap:18px;justify-items:start;max-width:560px}

/* exam */
.exam{display:grid;gap:18px}
.q-card{padding:24px;display:grid;gap:16px}
.q-card .qn{font-family:var(--f-mono);font-size:12px;color:var(--faint)}
.q-card h3{font-size:19px;line-height:1.35;letter-spacing:-.015em}
.opts{display:grid;gap:9px}
.opt{display:flex;gap:12px;align-items:center;text-align:left;padding:13px 15px;border:1px solid var(--line-2);border-radius:12px;font-size:15.5px;background:var(--bg-2);transition:border-color .2s,background .2s,transform .2s}
.opt:hover{border-color:rgba(255,255,255,.3)}
.opt .l{width:26px;height:26px;border-radius:8px;border:1px solid var(--line-2);display:grid;place-items:center;font-family:var(--f-mono);font-size:12px;flex:none;color:var(--muted)}
.opt[aria-pressed="true"]{border-color:var(--text);background:var(--surface-2)}
.opt[aria-pressed="true"] .l{background:var(--text);color:var(--bg);border-color:var(--text)}
.opt.right{border-color:var(--lime);background:var(--lime-soft)}
.opt.right .l{background:var(--lime);color:var(--on-lime);border-color:var(--lime)}
.opt.wrong{border-color:var(--red);background:rgba(255,92,122,.08);animation:shake .4s}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.q-why{font-size:14.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}
.exam-result{padding:26px;display:grid;gap:12px;justify-items:start}
.exam-result .score{font-size:44px;font-weight:600;letter-spacing:-.04em}

/* ===== TOKEN ===== */
.t-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.t-hero .wrap{position:relative;padding-block:clamp(56px,8vw,104px) clamp(48px,6vw,80px);display:grid;gap:30px}
.t-title{display:flex;align-items:center;gap:clamp(16px,3vw,32px);flex-wrap:wrap}
.t-title img{width:clamp(80px,11vw,130px)}
.t-title h1{font-size:clamp(56px,11vw,150px);letter-spacing:-.06em;line-height:.9;font-weight:700}
.t-title h1 span{color:var(--lime)}
.t-sub{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end}
@media (max-width:820px){.t-sub{grid-template-columns:1fr}}
.status{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-mono);font-size:12px;padding:6px 12px;border-radius:999px;border:1px solid var(--line-2)}
.status i{width:7px;height:7px;border-radius:50%;background:var(--muted)}
.status.live{border-color:var(--lime-line);color:var(--lime)}
.status.live i{background:var(--lime);box-shadow:0 0 10px var(--lime);animation:pulse 1.6s infinite}
@keyframes pulse{50%{opacity:.3}}
.ca-box{display:flex;align-items:center;gap:8px;border:1px solid var(--line-2);border-radius:14px;padding:6px 6px 6px 16px;background:var(--surface);max-width:100%;width:fit-content}
.ca-box .lbl{font-family:var(--f-mono);font-size:12px;color:var(--faint);flex:none}
.ca-box code{font-family:var(--f-mono);font-size:14px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.ca-box .btn{height:36px;flex:none}
.t-actions{display:flex;gap:10px;flex-wrap:wrap}
.live-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--r);background:var(--bg-2);overflow:hidden}
.live-grid > div{padding:20px 22px;border-right:1px solid var(--line);min-width:0}
.live-grid > div:last-child{border-right:0}
.live-grid small{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.live-grid b{display:block;font-size:clamp(20px,2.4vw,28px);font-weight:600;letter-spacing:-.03em;margin-top:6px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.live-grid b.up{color:var(--lime)} .live-grid b.down{color:var(--red)}
.live-grid b.flash{animation:flash .8s}
@keyframes flash{from{text-shadow:0 0 18px var(--lime)}}
@media (max-width:900px){.live-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.live-grid>div{border-bottom:1px solid var(--line)}.live-grid>div:nth-child(2n){border-right:0}.live-grid>div:last-child{grid-column:1/-1;border-bottom:0}}
.chart-box{overflow:hidden}
.chart-box iframe{display:block;width:100%;height:min(560px,70vh);border:0;background:var(--bg)}
.chart-empty{padding:56px 24px;display:grid;justify-items:center;text-align:center;gap:14px;color:var(--muted)}
.chart-empty svg{width:100%;max-width:520px;height:auto}
.chart-empty b{color:var(--text);font-size:18px}
.buy-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media (max-width:900px){.buy-steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.buy-steps{grid-template-columns:1fr}}
.buy-steps .card{padding:24px;display:grid;gap:12px;align-content:start}
.buy-steps .n{width:34px;height:34px;border-radius:10px;background:var(--lime);color:var(--on-lime);display:grid;place-items:center;font-family:var(--f-mono);font-weight:600;font-size:14px}
.buy-steps h3{font-size:18px}
.buy-steps p{color:var(--muted);font-size:14.5px}
.two{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:16px}
@media (max-width:900px){.two{grid-template-columns:1fr}}
.panel{padding:28px;display:grid;gap:18px;align-content:start;min-width:0}
.panel h3{font-size:21px}
.curve-svg{width:100%;height:auto;display:block}
.facts{display:grid}
.fact{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
.fact:last-child{border-bottom:0}
.fact span{color:var(--muted)}
.fact b{font-family:var(--f-mono);font-weight:500;font-size:14px;text-align:right;overflow-wrap:anywhere}
.fee-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:560px){.fee-cards{grid-template-columns:1fr}}
.fee-card{border:1px solid var(--line);border-radius:12px;padding:16px;display:grid;gap:6px;background:var(--bg-2)}
.fee-card.active{border-color:var(--lime-line);background:var(--lime-soft)}
.fee-card h4{font-size:15px;display:flex;justify-content:space-between;gap:8px}
.fee-card p{font-size:13.5px;color:var(--muted)}
.links-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
@media (max-width:860px){.links-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.link-card{padding:20px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.link-card b{display:block;font-weight:600}
.link-card small{color:var(--faint);font-family:var(--f-mono);font-size:12px;overflow-wrap:anywhere}
.link-card svg{width:16px;height:16px;flex:none;transition:transform .25s var(--ease)}
.link-card:hover svg{transform:translate(2px,-2px)}

/* toast + confetti */
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translate(-50%,160%);background:var(--text);color:var(--bg);padding:12px 18px;border-radius:999px;font-weight:600;font-size:14px;z-index:100;transition:transform .45s var(--ease);box-shadow:0 20px 50px -12px rgba(0,0,0,.7);max-width:calc(100vw - 32px);text-align:center;display:flex;gap:10px;align-items:center}
.toast.show{transform:translate(-50%,0)}
.toast i{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:none;box-shadow:0 0 0 3px rgba(213,251,52,.3)}
#confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:99}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}
.t-title h1 .word:first-child > span{color:var(--text)}
#continueBtn{white-space:normal;height:auto;min-height:38px;padding-block:8px;line-height:1.3;text-align:left;justify-content:flex-start}

/* =========================================================
   GRADIENT LAYER · higher.fun pastel spectrum + crest lime
   ========================================================= */
@property --ang{syntax:"<angle>";initial-value:0deg;inherits:false}
:root{
  --g-y:#f4ec8c; --g-p:#f7a6c4; --g-b:#a6d5f6; --g-m:#a7efc8;
  --grad:linear-gradient(90deg,var(--g-y),var(--g-p),var(--g-b),var(--g-m),var(--lime),var(--g-y));
  --grad-c:conic-gradient(from var(--ang),var(--g-y),var(--g-p),var(--g-b),var(--g-m),var(--lime),var(--g-y));
}
@keyframes gradrun{to{background-position:300% 0}}
@keyframes angspin{to{--ang:360deg}}

/* running gradient text */
.gt,.serif.lime,.hero h1 .serif,.cta .display .serif,.teaser .big span,.t-title h1 .word:last-child > span,.stats-band .n,.alum .journey .to b,.exam-result .score.lime{
  background:var(--grad);background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;animation:gradrun 9s linear infinite}
.hero h1 .serif,.page-head h1 .serif{animation:wordUp 1s var(--ease) both,gradrun 9s linear infinite}
.t-title h1 .word:last-child > span{animation:wordUp 1s var(--ease) both,gradrun 9s linear infinite;animation-delay:80ms,0s}
.cta .display .serif{padding-right:.06em}

/* buttons: running gradient fill */
.btn-lime{background:var(--grad);background-size:300% 100%;border-color:transparent;color:#0a0a0a;animation:gradrun 6s linear infinite;box-shadow:0 0 0 0 rgba(247,166,196,0)}
.btn-lime:hover{background:var(--grad);background-size:300% 100%;border-color:transparent;animation-duration:1.8s;box-shadow:0 14px 40px -12px rgba(247,166,196,.65),0 6px 24px -10px rgba(166,213,246,.6);transform:translateY(-2px)}
.btn-lime::after{background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.7) 50%,transparent 70%);animation:shineSweep 3.8s var(--ease) infinite}
@keyframes shineSweep{0%,55%{transform:translateX(-130%)}85%,100%{transform:translateX(130%)}}
.btn-lime:hover::after{transform:none;animation-duration:1.2s}
/* outline buttons: spinning gradient border */
.btn:not(.btn-lime)::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:var(--grad-c);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.35;animation:angspin 5s linear infinite;transition:opacity .3s;pointer-events:none}
.btn:not(.btn-lime):hover::before{opacity:1;animation-duration:1.6s}
.btn:not(.btn-lime){border-color:transparent}
.btn:not(.btn-lime):hover{box-shadow:0 10px 34px -14px rgba(166,213,246,.55)}
.icon-btn{position:relative}
.icon-btn:hover{background:var(--grad);background-size:300% 100%;animation:gradrun 2s linear infinite;color:#0a0a0a;border-color:transparent}
.btn.mag{transition:transform .15s ease-out,background .2s,box-shadow .3s}

/* kicker, bars, rings, scroll bar */
.kicker::before{background:var(--grad);background-size:300% 100%;animation:gradrun 4s linear infinite;box-shadow:0 0 14px rgba(247,166,196,.6)}
.bar i,.scrollbar,.big-ring::before{background:var(--grad);background-size:300% 100%;animation:gradrun 4s linear infinite}
.scrollbar{height:3px}
.ring,.big-ring{background:conic-gradient(var(--g-y) 0,var(--g-p) calc(var(--p)*.33%),var(--g-b) calc(var(--p)*.66%),var(--lime) calc(var(--p)*1%),var(--surface-2) 0)}
.badge.done{background:var(--grad);background-size:300% 100%;animation:gradrun 5s linear infinite;border-color:transparent}
.badge.open{color:var(--text);border-color:transparent;background:linear-gradient(var(--surface),var(--surface)) padding-box,var(--grad) border-box;background-size:auto,300% 100%;animation:gradrun 5s linear infinite;border:1px solid transparent}
.rung.is-done .node,.unit.is-done .unit-num,.lesson-row.done .tick,.side ol a.done .s,.buy-steps .n,.d-seal{background:var(--grad);background-size:300% 100%;animation:gradrun 5s linear infinite;border-color:transparent}
.rung.is-open .node{border-color:transparent;background:linear-gradient(var(--bg),var(--bg)) padding-box,var(--grad) border-box;color:var(--text);box-shadow:0 0 0 6px rgba(247,166,196,.08),0 0 30px -4px rgba(166,213,246,.4)}
.side ol a[aria-current="page"]{border-image:var(--grad) 1;border-left-width:2px}
.note::before{background:var(--grad);background-size:100% 300%}
.note.warn::before{background:var(--red)}
.tab[aria-selected="true"]{background:var(--grad);background-size:300% 100%;animation:gradrun 6s linear infinite;color:#0a0a0a}
.opt.right{border-color:transparent;background:linear-gradient(var(--surface-2),var(--surface-2)) padding-box,var(--grad) border-box;border:1px solid transparent}
.opt.right .l{background:var(--grad);border-color:transparent}
.toast i{background:var(--grad);background-size:300% 100%;animation:gradrun 2s linear infinite}
.float-card .ic{background:var(--grad);background-size:300% 100%;animation:gradrun 6s linear infinite;color:#0a0a0a}
.status.live{color:var(--text);border-color:transparent;background:linear-gradient(var(--surface),var(--surface)) padding-box,var(--grad) border-box;border:1px solid transparent}
.status.live i{background:var(--g-m)}
.marquee-track span:nth-child(5n+1) i{color:var(--g-y)}.marquee-track span:nth-child(5n+2) i{color:var(--g-p)}.marquee-track span:nth-child(5n+3) i{color:var(--g-b)}.marquee-track span:nth-child(5n+4) i{color:var(--g-m)}

/* gradient border on hover cards */
.card-hover::after{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:var(--grad-c);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s;animation:angspin 4s linear infinite;pointer-events:none}
.card-hover:hover::after{opacity:1}
.card-hover:hover{box-shadow:0 30px 60px -30px rgba(166,213,246,.35)}
.spot::before{background:radial-gradient(420px circle at var(--x) var(--y),rgba(247,166,196,.09),rgba(166,213,246,.05) 30%,transparent 55%)}

/* moving gradient blobs */
.blobs{position:absolute;inset:-20% -10%;pointer-events:none;filter:blur(70px);opacity:.33}
.blobs span{position:absolute;width:38vmax;height:38vmax;border-radius:50%;mix-blend-mode:screen}
.blobs span:nth-child(1){background:var(--g-y);left:45%;top:-10%;animation:blob1 22s ease-in-out infinite}
.blobs span:nth-child(2){background:var(--g-p);left:70%;top:25%;animation:blob2 26s ease-in-out infinite}
.blobs span:nth-child(3){background:var(--g-b);left:55%;top:50%;animation:blob3 30s ease-in-out infinite}
.blobs span:nth-child(4){background:var(--g-m);left:15%;top:60%;width:26vmax;height:26vmax;opacity:.6;animation:blob2 34s ease-in-out infinite reverse}
@keyframes blob1{50%{transform:translate(-18vmax,12vmax) scale(1.15)}}
@keyframes blob2{50%{transform:translate(-12vmax,-14vmax) scale(.9)}}
@keyframes blob3{50%{transform:translate(14vmax,-8vmax) scale(1.2)}}
.hero-glow{display:none}

/* hand-drawn doodles */
.doodle{position:absolute;pointer-events:none;overflow:visible}
.doodle path,.doodle circle,.doodle line,.doodle polyline,.doodle ellipse{fill:none;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}
.js .draw path,.js .draw circle,.js .draw line,.js .draw polyline,.js .draw ellipse{stroke-dasharray:var(--len,1000);stroke-dashoffset:var(--len,1000);transition:stroke-dashoffset 1.6s var(--ease)}
.js .draw.in path,.js .draw.in circle,.js .draw.in line,.js .draw.in polyline,.js .draw.in ellipse{stroke-dashoffset:0}
.draw .s2{transition-delay:.5s!important}.draw .s3{transition-delay:.9s!important}.draw .s4{transition-delay:1.3s!important}
.hand{font-family:var(--f-serif);font-style:italic;font-size:22px;fill:var(--text)}
.hl-wrap{position:relative;display:inline-block}
.hl-wrap .doodle{left:-4%;right:-4%;bottom:-.18em;width:108%;height:.42em}
.twinkle{animation:twinkle 2.6s ease-in-out infinite;transform-origin:center;transform-box:fill-box}
@keyframes twinkle{50%{opacity:.35;transform:scale(.75) rotate(20deg)}}
.hero-ctas{position:relative}
.cta-note{position:absolute;left:calc(100% + 6px);top:-28px;width:170px;height:100px}
@media (max-width:700px){.cta-note{display:none}}
.title-scribble{display:block;width:min(260px,60%);height:22px;margin-top:-6px;overflow:visible}

/* chalk trail */
.trail-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.hero .wrap,.t-hero .wrap,.page-head .wrap{z-index:1}

/* chalkboard */
.board-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px}
@media (max-width:900px){.board-wrap{grid-template-columns:1fr}}
.board{position:relative;border-radius:var(--r);overflow:hidden;background:#0d0f0d;border:1px solid var(--line);aspect-ratio:16/9;max-width:100%;touch-action:none;cursor:crosshair}
.board::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:var(--grad-c);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:angspin 8s linear infinite;opacity:.5;pointer-events:none}
.board canvas{position:absolute;inset:0;width:100%;height:100%}
.board .hint{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-family:var(--f-serif);font-style:italic;font-size:clamp(20px,3vw,32px);color:rgba(255,255,255,.28);pointer-events:none;transition:opacity .4s;text-align:center}
.board.used .hint{opacity:0}
.tools{padding:22px;display:grid;gap:18px;align-content:start}
.swatches{display:flex;gap:10px;flex-wrap:wrap}
.sw{width:34px;height:34px;border-radius:50%;border:2px solid transparent;outline:1px solid var(--line-2);transition:transform .2s}
.sw:hover{transform:scale(1.1)}
.sw[aria-pressed="true"]{border-color:var(--bg);outline:2px solid var(--text)}
.sw.rainbow{background:var(--grad-c);animation:angspin 3s linear infinite}
.sizes{display:flex;gap:8px}
.sz{width:40px;height:40px;border-radius:10px;border:1px solid var(--line-2);display:grid;place-items:center}
.sz i{display:block;border-radius:50%;background:var(--text)}
.sz[aria-pressed="true"]{background:var(--surface-2);border-color:var(--text)}
.tools .row{display:flex;gap:8px;flex-wrap:wrap}

/* shimmering top border on sections */
.section + .section{border-top:0}
.section + .section::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(247,166,196,.35),rgba(166,213,246,.35),rgba(167,239,200,.35),transparent)}

@media (prefers-reduced-motion:reduce){.js .draw path,.js .draw circle,.js .draw line,.js .draw polyline,.js .draw ellipse{stroke-dashoffset:0}}
.cta > *:not(.doodle){position:relative;z-index:1}
.cta > .doodle{opacity:.6!important}