:root{
  --bg:#F9F9FF; --ink:#201F1F; --body:#5F6368; --muted:#777777;
  --blue:#0D90DB; --green:#59A56D; --blue-tint:rgba(13,144,219,.14); --green-tint:rgba(89,165,109,.16);
  --card:#FFFFFF; --line:#E6E8F0; --shadow:0 12px 40px rgba(32,31,31,.08);
  --grad:linear-gradient(90deg,#59A56D 0%,#3E9DB0 55%,#0D90DB 100%);
  --sp:80px; --head:'Plus Jakarta Sans',system-ui,sans-serif; --text:'Inter',system-ui,sans-serif;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){ --bg:#F9F9FF; } }
:root[data-theme="dark"]{ --bg:#F9F9FF; }
html{scroll-padding-top:env(safe-area-inset-top,0px); scroll-behavior:smooth}
*,*::before,*::after{box-sizing:inherit}
body{margin:0;background:var(--bg);color:var(--body);font-family:var(--text);font-size:17px;line-height:1.6;overflow-x:hidden}
h1,h2,h3{font-family:var(--head);color:var(--ink);margin:0;line-height:1.1;letter-spacing:-.01em}
h1{font-size:clamp(40px,6vw,66px);font-weight:800;line-height:1.08}
h2{font-size:clamp(30px,4vw,44px);font-weight:800}
h3{font-size:20px;font-weight:700}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{width:min(1200px,calc(100% - 48px));margin:0 auto}
.blue{color:var(--blue)} .green{color:var(--green)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:12px;padding:14px 26px;border-radius:10px;font-weight:600;font-size:16px;line-height:1;transition:transform .15s ease,box-shadow .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(13,144,219,.22)}
.btn-outline{background:#fff;border:2px solid var(--green);color:var(--green)}
.btn-white{background:#fff;color:var(--blue);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.btn .arrow{width:26px;height:26px;border-radius:50%;background:var(--green);display:inline-grid;place-items:center;color:#fff;font-size:14px;flex:none}
.btn-grad .arrow{background:rgba(255,255,255,.22)}
.btn-white .arrow{background:var(--blue)}
.btn-stack{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left}
.btn-stack small{font-weight:500;font-size:12px;opacity:.85}
.btn-stack span{font-size:18px}

/* nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;padding:18px 0}
.nav .bar{background:#fff;border-radius:16px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between;padding:14px 28px;gap:16px}
.logo{display:flex;align-items:center;gap:10px}
.logo svg{width:40px;height:40px}
.logo img{height:44px;width:auto;display:block}
.logo .word{font-family:var(--head);line-height:1}
.logo .word b{display:block;font-size:22px;font-weight:800;color:var(--ink);letter-spacing:.02em}
.logo .word i{display:block;font-style:normal;font-size:10px;font-weight:600;color:var(--green);letter-spacing:.32em;margin-top:2px}
.nav .right{display:flex;align-items:center;gap:22px}
.nav .links{display:flex;gap:28px;font-weight:500;font-size:15px;color:var(--ink)}
.nav .links a:hover{color:var(--blue)}
.burger{display:none;width:34px;height:26px;background:none;border:0;padding:0;cursor:pointer;flex-direction:column;justify-content:space-between}
.burger span{display:block;height:3px;background:var(--ink);border-radius:2px}
@media (max-width:900px){ .nav .links{display:none} .burger{display:flex} }

/* floating shapes */
.shape{position:absolute;pointer-events:none;opacity:.7}
.hex{width:64px;height:72px;background:var(--green-tint);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.pie{width:64px;height:64px;border-radius:50%;background:var(--blue-tint);clip-path:polygon(50% 50%,50% 0,100% 0,100% 100%,0 100%,0 50%)}
.tri{width:70px;height:60px;background:#fff;clip-path:polygon(50% 0,100% 100%,0 100%)}

/* hero */
.hero{position:relative;padding:40px 0 var(--sp)}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.pill{display:inline-block;background:var(--blue-tint);color:var(--ink);font-family:var(--head);font-weight:700;font-size:13px;letter-spacing:.14em;padding:10px 20px;border-radius:8px;margin-bottom:26px}
.hero p.lead{font-size:20px;color:var(--ink);margin:26px 0 34px;max-width:32ch}
.ctas{display:flex;gap:16px;flex-wrap:wrap;align-items:flex-start}
.hero .ctas{display:flex;gap:16px;flex-wrap:wrap}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.tiles .col{display:flex;flex-direction:column;gap:20px}
.tiles .col:first-child{padding-top:36px}
.tile{border-radius:18px;background:#DCE9F5;display:grid;place-items:center;color:#7A8AA0;font-size:13px;font-weight:600;text-align:center;padding:12px}
.t1{height:210px;background:#E8E3D5}
.t2{height:300px;background:linear-gradient(180deg,#9AD2F3,#5BB4EA)}
.t3{height:280px;background:linear-gradient(180deg,#B9E4C4,#7EC993)}
.t4{height:240px;background:#D9E2EA}
@media (max-width:900px){ :root{--sp:56px} .hero .grid{grid-template-columns:1fr} .tiles .col:first-child{padding-top:0} .tile{height:150px} }

/* how it works (teachers) */
.section{padding:var(--sp) 0}
/* no doubling where two light sections meet */
.hero + .section, .section + .section, .about + .section, .section + .about, .section + .schools, .schools + .register, .section + .register{padding-top:0}
.section-head{text-align:center;max-width:60ch;margin:0 auto 48px}
.section-head p{margin-top:14px;font-size:18px}
.steps{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:48px}
.steps::before{content:"";position:absolute;left:16%;right:16%;top:-34px;height:2px;background:var(--green);opacity:.55}
.step{position:relative;background:var(--card);border-radius:18px;padding:104px 28px 32px;text-align:center;box-shadow:var(--shadow);border-bottom:4px solid transparent;border-image:var(--grad) 1}
.step::before{content:"";position:absolute;top:-40px;left:50%;width:14px;height:14px;border:2px solid var(--green);border-radius:50%;background:#fff;transform:translateX(-50%)}
.step::after{content:"";position:absolute;top:-26px;left:50%;width:2px;height:26px;background:var(--green);opacity:.55;transform:translateX(-50%)}
.step .icon{position:absolute;top:18px;left:50%;transform:translateX(-50%);width:64px;height:64px;border-radius:50%;background:#fff;box-shadow:0 6px 18px rgba(0,0,0,.08);display:grid;place-items:center}
.step .icon svg{width:30px;height:30px}
.step h3{margin:6px 0 12px}
.step p{font-size:15px}
@media (max-width:900px){ .steps{grid-template-columns:1fr} .steps::before{display:none} .step::before,.step::after{display:none} }

/* about strip */
.about{position:relative;padding:var(--sp) 0}
.about .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:72px;align-items:center}
.about h2{margin-bottom:22px;line-height:1.2}
.about p{margin-bottom:18px;max-width:58ch}
.about .photo{position:relative;height:420px}
.about .photo .main{position:absolute;inset:40px 40px 0 60px;border-radius:24px;background:linear-gradient(180deg,#CDE6F6,#9CCBE8);display:grid;place-items:center;color:#5C7FA0;font-weight:600;font-size:13px}
.about .photo .sq1{position:absolute;right:0;top:0;width:110px;height:110px;border-radius:16px;background:var(--blue);opacity:.85}
.about .photo .sq2{position:absolute;left:0;bottom:0;width:90px;height:90px;border-radius:16px;background:var(--green);opacity:.8}
@media (max-width:900px){ .about .grid{grid-template-columns:1fr} .about .photo{height:300px} }

/* gradient band */
.band{position:relative;background:var(--grad);color:#fff;padding:var(--sp) 0;overflow:hidden}
.band::before,.band::after{content:"";position:absolute;width:220px;height:120px;background-image:radial-gradient(rgba(255,255,255,.35) 2px,transparent 2.5px);background-size:16px 16px}
.band::before{right:40px;top:24px}
.band::after{left:40px;bottom:24px}
.band .grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:center}
.band h2{color:#fff}
.band p{font-size:18px;margin:18px 0 30px;max-width:56ch;color:rgba(255,255,255,.95)}
.band .ctas{display:flex;gap:16px;flex-wrap:wrap}
.band .person{height:320px;border-radius:24px;background:rgba(255,255,255,.18);display:grid;place-items:center;font-size:13px;font-weight:600;color:rgba(255,255,255,.85)}
@media (max-width:900px){ .band .grid{grid-template-columns:1fr} .band .person{height:200px} }

/* four cards */
.four{display:grid;grid-template-columns:repeat(4,1fr);gap:56px 24px;margin-top:40px}
.card4{position:relative;background:#fff;border-radius:16px;padding:56px 22px 28px;text-align:center;border:2px solid transparent;background-image:linear-gradient(#fff,#fff),var(--grad);background-origin:border-box;background-clip:padding-box,border-box;box-shadow:var(--shadow)}
.card4 .icon{position:absolute;top:-30px;left:50%;transform:translateX(-50%);width:60px;height:60px;border-radius:50%;background:#fff;box-shadow:0 6px 18px rgba(0,0,0,.08);display:grid;place-items:center}
.card4 .icon svg{width:28px;height:28px}
.card4 h3{font-size:19px;margin-bottom:12px}
.card4 p{font-size:15px}
.card4.guide{display:block;color:inherit;transition:transform .15s ease}
.card4.guide:hover{transform:translateY(-3px)}
.card4.guide h3{font-size:18px}
@media (max-width:1000px){ .four{grid-template-columns:repeat(2,1fr)} }
@media (max-width:600px){ .four{grid-template-columns:1fr} }

/* schools */
.schools{padding:var(--sp) 0}
.schools .box{background:#fff;border-radius:24px;box-shadow:var(--shadow);padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.schools h2{line-height:1.2;margin-bottom:18px}
.schools ul{margin:0 0 26px;padding:0;list-style:none;display:grid;gap:12px}
.schools li{display:flex;gap:12px;align-items:flex-start;font-size:16px;color:var(--ink)}
.schools li::before{content:"";flex:none;width:22px;height:22px;border-radius:50%;background:var(--green-tint);margin-top:2px;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M5 10.5l3 3 7-7' fill='none' stroke='%2359A56D' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/></svg>");background-size:14px;background-repeat:no-repeat;background-position:center}
@media (max-width:900px){ .schools .box{grid-template-columns:1fr;padding:36px} }

/* register */
.register{padding:0 0 var(--sp)}
.register .box{background:#fff;border-radius:24px;box-shadow:var(--shadow);padding:56px;max-width:760px;margin:0 auto;text-align:center}
.register .eyebrow{color:var(--blue);font-weight:600;font-size:15px;margin-bottom:8px}
.register h2{margin-bottom:14px}
.register p{max-width:52ch;margin:0 auto 28px}
.embed{border:2px dashed var(--line);border-radius:16px;padding:60px 20px;color:var(--muted);font-size:14px}


/* register form */
.register .box{max-width:860px;text-align:left}
.register .box .eyebrow,.register .box h2,.register .box > p{text-align:center}
.reg{display:grid;gap:18px;margin-top:8px}
.reg .row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.reg label{display:grid;gap:8px;font-family:var(--head);font-weight:600;font-size:14px;color:var(--ink)}
.reg input,.reg select{font:500 16px/1.3 var(--text);color:var(--ink);background:#fff;border:1.5px solid #D9DEE8;border-radius:10px;padding:14px 16px;width:100%;transition:border-color .15s,box-shadow .15s}
.reg input::placeholder{color:#A6ADBB;font-weight:400}
.reg select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M5 8l5 5 5-5' fill='none' stroke='%23201F1F' stroke-width='2' stroke-linecap='round'/></svg>");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:44px}
.reg input:focus,.reg select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px var(--blue-tint)}
.reg .file .filebox{position:relative;display:grid;place-items:center;border:1.5px dashed #BFD8EA;border-radius:10px;background:var(--blue-tint);min-height:52px;padding:14px;cursor:pointer}
.reg .file input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.reg .filehint{font:500 14px var(--text);color:var(--blue)}
.reg .check{grid-template-columns:auto 1fr;align-items:start;font:400 14px/1.5 var(--text);color:var(--body)}
.reg .check input{width:20px;height:20px;margin-top:2px;accent-color:var(--green)}
.reg .check a{color:var(--blue);text-decoration:underline}
.btn.big{justify-content:center;padding:18px 28px;font-size:17px;margin-top:6px}
.reg .fine{text-align:center;font-size:13px;color:var(--muted);margin-top:-6px}
@media (max-width:640px){ .reg .row2{grid-template-columns:1fr} .register .box{padding:32px 22px} }

.reg .fstep{border:0;padding:0;margin:0;display:none;gap:18px;background:none;box-shadow:none;border-radius:0;text-align:left}
.reg .fstep::before,.reg .fstep::after{display:none}
.reg .fstep.on{display:grid}
.reg legend{font-family:var(--head);font-weight:800;font-size:22px;color:var(--ink);margin-bottom:6px;padding:0}
.reg .nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:6px}
.reg .nav .btn{padding:14px 22px}
.progress{display:grid;gap:10px;margin-bottom:10px}
.progress .bar{display:block;height:6px;border-radius:6px;background:#E6E8F0;overflow:hidden}
.progress .bar i{display:block;height:100%;background:var(--grad);border-radius:6px;transition:width .3s ease}
.progress .steps{display:flex;justify-content:space-between;font-family:var(--head);font-weight:600;font-size:12px;color:#A6ADBB;letter-spacing:.02em}
.progress .steps b.on{color:var(--ink)}
.progress .steps b.done{color:var(--green)}
.reg .fstep.on{animation:stepin .25s ease}
@keyframes stepin{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.reg .fstep.on{animation:none}}

/* footer */
footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 32px}
footer .grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
footer h4{font-family:var(--head);font-size:14px;color:var(--ink);margin:0 0 14px;letter-spacing:.02em}
footer ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;font-size:15px}
footer a:hover{color:var(--blue)}
footer .small{font-size:13px;color:var(--muted);max-width:52ch}
footer .base{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:22px;font-size:13px;color:var(--muted)}
@media (max-width:800px){ footer .grid{grid-template-columns:1fr 1fr} }

@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} .btn{transition:none} }

/* inner page hero */
.phero{position:relative;padding:40px 0 var(--sp)}
.phero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.phero h1{font-size:clamp(36px,5vw,56px)}
.phero p.lead{font-size:19px;color:var(--ink);margin:22px 0 30px;max-width:36ch}
.phero + .section{padding-top:0}
@media (max-width:900px){ .phero .grid{grid-template-columns:1fr} }
/* two-col text block */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.cols h3{margin-bottom:10px}
.cols p{margin-bottom:14px}
@media (max-width:800px){ .cols{grid-template-columns:1fr} }
/* yes / no lists */
.yesno{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.yesno .box{background:#fff;border-radius:18px;padding:32px;box-shadow:var(--shadow)}
.yesno h3{margin-bottom:14px}
.yesno ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.yesno li{display:flex;gap:12px;align-items:flex-start;color:var(--ink);font-size:16px}
.yesno li::before{content:"";flex:none;width:22px;height:22px;border-radius:50%;margin-top:1px;background-size:14px;background-repeat:no-repeat;background-position:center}
.yesno .yes li::before{background-color:var(--green-tint);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M5 10.5l3 3 7-7' fill='none' stroke='%2359A56D' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/></svg>")}
.yesno .no li::before{background-color:#F6E3DE;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M6 6l8 8M14 6l-8 8' fill='none' stroke='%23E06B44' stroke-width='2.4' stroke-linecap='round'/></svg>")}
.yesno .no p{font-size:14px;color:var(--muted);margin-top:14px}
@media (max-width:800px){ .yesno{grid-template-columns:1fr} }
/* faq */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq details{background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:0 24px}
.faq summary{cursor:pointer;list-style:none;font-family:var(--head);font-weight:700;font-size:17px;color:var(--ink);padding:20px 0;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:24px;color:var(--blue);flex:none;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 20px;font-size:16px}
/* timeline strip */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.timeline .t{background:#fff;border-radius:14px;padding:22px;box-shadow:var(--shadow);border-top:4px solid var(--blue)}
.timeline .t:nth-child(even){border-top-color:var(--green)}
.timeline .t b{display:block;font-family:var(--head);font-size:13px;letter-spacing:.1em;color:var(--blue);margin-bottom:8px}
.timeline .t:nth-child(even) b{color:var(--green)}
.timeline .t h3{font-size:18px;margin-bottom:6px}
.timeline .t p{font-size:14px}
@media (max-width:900px){ .timeline{grid-template-columns:1fr 1fr} }
@media (max-width:560px){ .timeline{grid-template-columns:1fr} }

/* guide article layout */
.article{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.article .aside{position:sticky;top:110px;display:grid;gap:16px}
.acta{background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:28px;text-align:center}
.acta h3{margin-bottom:10px}
.acta p{font-size:14px;margin-bottom:18px}
.prose{font-size:17px}
.prose h2{font-size:28px;margin:44px 0 16px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:20px;margin:30px 0 10px}
.prose p{margin:0 0 16px;max-width:68ch}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px;display:grid;gap:8px;max-width:66ch}
.prose a{color:var(--blue);text-decoration:underline}
.prose table{width:100%;border-collapse:collapse;margin:8px 0 22px;background:#fff;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);font-size:15px}
.prose th{font-family:var(--head);font-size:13px;letter-spacing:.04em;text-align:left;color:#fff;background:var(--grad);padding:12px 16px}
.prose td{padding:12px 16px;border-top:1px solid var(--line);color:var(--ink)}
.prose .note{background:var(--blue-tint);border-radius:14px;padding:18px 22px;margin:0 0 18px;font-size:15px;color:var(--ink)}
.prose .sources{font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:38px}
.prose .sources a{color:var(--muted)}
.crumb{font-size:14px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--blue)}
.updated{font-size:13px;color:var(--muted);margin:10px 0 0}
@media (max-width:900px){ .article{grid-template-columns:1fr} .article .aside{position:static} }

.tile.photo{padding:0;overflow:hidden}
.tile.photo img{width:100%;height:100%;object-fit:cover;display:block}

/* photos in bands and the about strip */
.band .wrap{position:relative;z-index:1}
.band::before,.band::after{pointer-events:none}
.band .person{overflow:hidden}
.about .photo .main{overflow:hidden}
.band .person img,.about .photo .main img{width:100%;height:100%;object-fit:cover;display:block}

/* mobile nav: compact CTA and working burger menu */
.nav .wrap{position:relative}
@media (max-width:900px){
  .nav .bar .btn-grad{padding:11px 16px;font-size:14px;white-space:nowrap}
  .nav.menu-open .links{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:calc(100% + 8px);background:#fff;border-radius:16px;box-shadow:var(--shadow);padding:20px 26px;gap:16px;font-size:16px;z-index:30}
}
@media (max-width:640px){ .nav .bar .btn-grad{display:none} }