/* Landing page — warm cream + Yazh teal; large friendly tap targets (56px), tight but airy spacing, nothing overlaps.
   Principles borrowed from the Skylearn reference: dyslexia-friendly body type, 56px targets, colour never the only signal. */
#landing{--lw:1180px;--gap:clamp(22px,3.2vw,36px)}
#landing *{box-sizing:border-box}
.l-wrap{width:100%;max-width:var(--lw);margin:0 auto;padding:0 24px}
#landing .btn{min-height:48px}
#landing .btn.big{min-height:56px;padding:0 28px;font-size:1.08rem}
#landing .btn:active{transform:scale(.97)}
#landing a:focus-visible,#landing button:focus-visible,#landing summary:focus-visible,#landing input:focus-visible,#landing textarea:focus-visible{outline:3px solid var(--ink);outline-offset:3px}

/* ---------- top bar ---------- */
.l-nav{position:sticky;top:0;z-index:40;background:rgba(255,248,238,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.l-nav .l-wrap{display:flex;align-items:center;gap:14px;min-height:68px;max-width:1320px}
.l-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:800 1.2rem/1.1 var(--f-d);flex:none}
.l-brand img{width:42px;height:42px;border-radius:50%;object-fit:cover}.l-brand small{display:block;font:600 .74rem var(--f-b);color:var(--muted)}
.l-links{display:flex;gap:2px;margin:0 0 0 8px;padding:0;list-style:none}
.l-links a{display:block;padding:10px 12px;border-radius:12px;color:var(--ink);text-decoration:none;font:700 .98rem var(--f-d);white-space:nowrap}
.l-links a:hover{background:var(--core-l)}
.l-ctl{display:flex;align-items:center;gap:10px;margin-left:auto}
.l-lang{display:inline-flex;background:#fff;border:1.5px solid var(--line);border-radius:99px;padding:3px}
.l-lang button{border:0;background:none;min-height:44px;padding:0 14px;border-radius:99px;font:800 .92rem var(--f-d);cursor:pointer;color:var(--muted);transition:background .2s,color .2s}
.l-lang button.on{background:var(--core-d);color:#fff}
.l-burger{display:none;width:48px;height:48px;border-radius:14px;border:1.5px solid var(--line);background:#fff;cursor:pointer;color:var(--ink);place-items:center}.l-burger svg{width:24px;height:24px}

/* ---------- hero ---------- */
.l-hero{padding:clamp(22px,3.6vw,44px) 0 var(--gap);background:radial-gradient(900px 420px at 85% -10%,rgba(18,175,175,.16),transparent 70%)}
.l-hero .l-wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(24px,4vw,56px);align-items:center}
.l-chip{display:inline-flex;align-items:center;background:var(--core-l);color:var(--core-d);border-radius:99px;padding:6px 14px;font:700 .95rem var(--f-d)}
.l-h1{font-size:clamp(2.1rem,5vw,3.7rem);line-height:1.25;margin:14px 0 12px;letter-spacing:-.01em;text-wrap:balance}
.l-h1 em{font-style:normal;color:var(--core-d);white-space:nowrap}
.l-lead{font-size:clamp(1.05rem,1.8vw,1.25rem);line-height:1.6;color:var(--ink);margin:0 0 20px;max-width:34em}
.l-cta{display:flex;flex-wrap:wrap;gap:12px}.l-cta.c{justify-content:center;margin:22px 0 4px}
.l-trust{display:flex;flex-wrap:wrap;gap:8px 22px;list-style:none;margin:22px 0 0;padding:0;color:var(--muted);font:700 .95rem var(--f-d)}
.l-trust li{display:flex;align-items:center;gap:8px}.l-trust svg{width:22px;height:22px;color:var(--core-d);flex:none}

.l-card{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:0 24px 48px rgba(15,23,42,.08);padding:20px;min-width:0}
.l-card-h{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.l-card-h h2{font-size:1.25rem;margin:0 0 2px}.l-card-h p{margin:0;color:var(--muted);font-size:.98rem}
.l-card-h .mascot{width:78px;height:auto;flex:none}
#demo-tracer{max-width:380px;margin:0 auto}#demo-tracer .tracer{width:100%}
.l-card-a{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:14px}
.l-card .qfb{text-align:center;min-height:1.4em;margin:8px 0 0}

/* ---------- sections ---------- */
.l-sec{padding:var(--gap) 0;scroll-margin-top:76px}
.l-sh{max-width:720px;margin:0 0 20px}.l-sh.center{margin-inline:auto;text-align:center}
.l-sh h2{font-size:clamp(1.65rem,3.4vw,2.35rem);margin:0 0 6px;line-height:1.25}
.l-sh p{margin:0;color:var(--muted);font-size:clamp(1rem,1.5vw,1.15rem);line-height:1.6}
.l-h3{font-size:1.4rem;margin:26px 0 12px}
#landing > section:nth-of-type(even){background:rgba(255,255,255,.55)}

/* class tracks */
.l-tks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.l-tk{--c:var(--core);display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-top:6px solid var(--c);border-radius:22px;padding:20px;transition:transform .24s var(--ease),box-shadow .24s}
.l-tk:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(15,23,42,.1)}
.l-tk-h{display:flex;align-items:center;gap:14px;margin-bottom:12px}.l-tk-e{display:grid;place-items:center;width:60px;height:60px;border-radius:18px;font-size:2rem;background:color-mix(in srgb,var(--c) 14%,#fff);flex:none}
.l-tk-h small{display:block;color:var(--muted);font:700 .9rem var(--f-d)}.l-tk-h h3{margin:0;font-size:1.5rem}
.l-tk ul{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:9px;flex:1}
.l-tk li{display:flex;gap:10px;align-items:flex-start;font-size:1.02rem;line-height:1.4}.l-tk li svg{width:20px;height:20px;flex:none;margin-top:2px;color:var(--c)}
.l-tk .btn{width:100%}

/* what is inside */
.l-stats{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin-bottom:18px}
.l-stats div{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 10px;text-align:center}
.l-stats b{display:block;font:800 clamp(1.6rem,3vw,2.2rem)/1.1 var(--f-d);color:var(--core-d);font-variant-numeric:tabular-nums}.l-stats span{display:block;color:var(--muted);font:700 .9rem var(--f-d);margin-top:2px}
.l-feats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.l-feats article{--c:var(--core);background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;transition:transform .24s var(--ease),box-shadow .24s}
.l-feats article:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(15,23,42,.08)}
.l-fi{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:color-mix(in srgb,var(--c) 14%,#fff);color:var(--c);margin-bottom:12px}.l-fi svg{width:26px;height:26px}
.l-feats h3{font-size:1.2rem;margin:0 0 6px}.l-feats p{margin:0;color:var(--muted);line-height:1.55}

#chart-host{min-width:0}

/* parents */
.l-two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(22px,4vw,48px);align-items:center}
.l-ticks{list-style:none;margin:0;padding:0;display:grid;gap:12px}.l-ticks li{display:flex;gap:12px;align-items:flex-start;font-size:1.05rem;line-height:1.45}
.l-ticks svg{width:24px;height:24px;flex:none;color:#fff;background:#34B26B;border-radius:50%;padding:4px}
.l-pmock{display:grid;gap:14px;max-width:460px;justify-self:center;width:100%}
.l-pm-h{display:flex;align-items:center;gap:12px}.l-av{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:var(--core-l);font-size:1.6rem;box-shadow:0 0 0 3px #fff,0 0 0 5px var(--core)}.l-pm-h b{font:800 1.15rem var(--f-d);display:block}.l-pm-h small{color:var(--muted)}
.l-pm-s{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.l-pm-s div{background:var(--cream);border-radius:16px;padding:10px;text-align:center}.l-pm-s b{display:block;font:800 1.6rem var(--f-d);color:var(--core-d);font-variant-numeric:tabular-nums}.l-pm-s small{color:var(--muted);font-weight:700}
.l-row{display:grid;grid-template-columns:84px minmax(0,1fr) auto;gap:12px;align-items:center;font:700 .95rem var(--f-d)}.l-row b{font-variant-numeric:tabular-nums;color:var(--muted)}
.l-bar{height:10px;background:var(--core-l);border-radius:99px;overflow:hidden}.l-bar i{display:block;height:100%;background:#34B26B;border-radius:99px}

/* free vs premium */
.tscroll{overflow-x:auto;border:1px solid var(--line);border-radius:20px;background:#fff}
#compare-host .ltable{margin:0;min-width:520px;border-collapse:collapse;width:100%}
#compare-host th,#compare-host td{padding:12px 14px;border-bottom:1px solid var(--line);font-size:1rem}
#compare-host tr:last-child td{border-bottom:0}

/* live classes */
.l-form{display:grid;gap:12px}.l-form input,.l-form textarea{width:100%;min-height:56px;border:1.5px solid var(--line);border-radius:14px;padding:12px 16px;font:inherit;font-size:1.05rem;background:var(--cream);color:var(--ink)}
.l-form textarea{min-height:96px;resize:vertical}.l-form input:focus,.l-form textarea:focus{border-color:var(--core);background:#fff;outline:none;box-shadow:0 0 0 4px var(--core-l)}
.l-two .btn.big svg{width:22px;height:22px;vertical-align:-5px}

/* questions */
.l-faq{display:grid;gap:10px;max-width:820px}
.l-faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 20px}
.l-faq summary{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;list-style:none;min-height:56px;font:800 1.08rem var(--f-d)}.l-faq summary::-webkit-details-marker{display:none}
.l-faq summary svg{width:22px;height:22px;flex:none;transition:transform .24s}.l-faq details[open] summary svg{transform:rotate(180deg)}
.l-faq details[open]{border-color:var(--core);box-shadow:0 0 0 3px var(--core-l)}.l-faq p{margin:0 0 16px;color:var(--ink);line-height:1.65;font-size:1.05rem}

.l-foot{border-top:1px solid var(--line);padding:22px 0;color:var(--muted);font-size:.95rem}
.l-foot .l-wrap{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between}.l-foot a{color:var(--core-d);font-weight:700}

/* ---------- smaller screens ---------- */
@media (max-width:1180px){
  .l-links{display:none}.l-burger{display:grid}
  .l-nav.open .l-links{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:8px 16px 14px;box-shadow:0 18px 30px rgba(15,23,42,.08)}
  .l-nav.open .l-links a{padding:14px 12px;font-size:1.05rem}
}
@media (max-width:1020px){
  .l-nav.open .l-links{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:8px 16px 14px;box-shadow:0 18px 30px rgba(15,23,42,.08)}
  .l-nav.open .l-links a{padding:14px 12px;font-size:1.05rem}
  .l-hero .l-wrap,.l-two{grid-template-columns:minmax(0,1fr)}
  .l-card{max-width:520px;width:100%;justify-self:center}
  .l-tks{grid-template-columns:minmax(0,1fr);max-width:560px;margin-inline:auto}
  .l-stats{grid-template-columns:repeat(3,minmax(0,1fr))}.l-feats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .l-wrap{padding:0 18px}.l-nav .l-wrap{gap:8px;min-height:64px}
  .l-brand span small,.l-startnav,.l-signin{display:none}
  .l-lang button{padding:0 11px}
  .l-h1{font-size:clamp(1.9rem,8.4vw,2.5rem)}.l-cta .btn{width:100%}
  .l-feats{grid-template-columns:minmax(0,1fr)}.l-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .l-card{padding:16px;border-radius:24px}.l-card-h .mascot{width:60px}
  .l-row{grid-template-columns:70px minmax(0,1fr) auto}
}
@media (prefers-reduced-motion:reduce){.l-tk,.l-feats article{transition:none}.l-tk:hover,.l-feats article:hover{transform:none}}

/* ---------- floating Tamil letters behind the hero (decorative, never blocks or hides text) ---------- */
.l-hero{position:relative;overflow:hidden;isolation:isolate}
.l-floaters{position:absolute;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.l-floaters span{position:absolute;font:800 2rem var(--f-d);color:var(--core);opacity:.13;animation:lfloat 9s ease-in-out infinite;user-select:none;will-change:transform}
.l-floaters span:nth-child(3n){color:#FF7A1A;opacity:.11}.l-floaters span:nth-child(5n){color:#5B5BD6;opacity:.10}
.l-kolam{position:absolute;display:grid;grid-template-columns:repeat(2,14px);gap:3px;opacity:.28;animation:lfloat 8s ease-in-out infinite}.l-kolam b{width:14px;height:14px;border-radius:50%;background:var(--core)}.l-kolam b:last-child{grid-column:1/3;justify-self:center}
@keyframes lfloat{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-16px) rotate(4deg)}}
@media (max-width:640px){.l-floaters span{opacity:.1}.l-floaters span:nth-child(2n){display:none}}
@media (prefers-reduced-motion:reduce){.l-floaters span,.l-kolam{animation:none}}

/* crawlable links under the landing page (hidden inside the app) */
.seo-links{max-width:var(--lw,1180px);margin:0 auto;padding:22px 24px 34px}.seo-links h2{font-size:1.2rem;margin:0 0 8px}.seo-links ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 10px}
.seo-links a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:99px;background:#fff;border:1px solid var(--line);color:var(--core-d);text-decoration:none;font:700 .95rem var(--f-d)}.seo-links a:hover{border-color:var(--core)}
body.in-app .seo-links{display:none}
@media (max-width:400px){.l-brand span{display:none}.l-nav .l-wrap{gap:6px}.l-lang button{padding:0 10px;font-size:.88rem}}

/* contrast */
.l-lang button.on{background:var(--core-d);color:#fff}
.l-card-h p,.l-pm-s small,.l-brand small{color:var(--muted)}
.seo-links a{color:var(--core-d)}