:root{--orange:#ff6b00;--orange2:#ff8c2f;--orange3:#fff0df;--dark:#1a1a1a;--muted:#6b6b6b;--line:#ffe0c2;--radius:20px;--nav-h:64px;--max:1120px}
[hidden]{display:none!important}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;color:var(--dark);background:#fffefb;line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--orange);color:#fff;padding:8px 14px;border-radius:0 0 8px 0;z-index:999}
.skip:focus{left:0}
.nav-wrap{position:fixed;top:18px;left:50%;transform:translateX(-50%);width:min(calc(100% - 24px),var(--max));z-index:50;animation:navIn .7s cubic-bezier(.2,.8,.2,1) both}
@keyframes navIn{from{opacity:0;transform:translateX(-50%) translateY(-16px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;background:rgba(255,255,255,.82);backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);border:1px solid rgba(255,255,255,.9);box-shadow:0 8px 32px rgba(255,107,0,.13),0 1px 0 rgba(255,255,255,1) inset;border-radius:100px;padding:10px 14px 10px 10px}
.hamburger{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;display:grid;place-items:center;gap:4px;cursor:pointer;flex-shrink:0;transition:.2s}
.hamburger span{display:block;width:18px;height:2px;background:var(--dark);border-radius:2px;transition:.25s}
.hamburger[aria-expanded=true] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger[aria-expanded=true] span:nth-child(2){opacity:0}
.hamburger[aria-expanded=true] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.brand{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;letter-spacing:-.04em;font-size:1.35rem;line-height:1;white-space:nowrap}
.brand span{color:var(--orange)}
.brand.small{font-size:1.1rem}
.btn-login{background:var(--orange);color:#fff;font-weight:700;font-size:.9rem;padding:11px 20px;border-radius:100px;border:0;cursor:pointer;transition:.2s;white-space:nowrap;display:inline-flex;align-items:center;box-shadow:0 6px 18px rgba(255,107,0,.32)}
.btn-login:hover{background:#e66000;transform:translateY(-1px)}
.drawer{position:fixed;inset:0 auto 0 0;width:320px;max-width:86vw;background:#fff;z-index:60;padding:20px;box-shadow:8px 0 40px rgba(0,0,0,.12);display:flex;flex-direction:column;gap:18px;border-right:1px solid var(--line);animation:drawerIn .32s cubic-bezier(.2,.8,.2,1)}
@keyframes drawerIn{from{transform:translateX(-100%)}to{transform:translateX(0)}}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer ul{list-style:none;display:grid;gap:6px}
.drawer a{display:block;padding:14px 16px;border-radius:14px;font-weight:600;transition:.15s}
.drawer a:hover{background:var(--orange3)}
.drawer-cta{background:var(--orange)!important;color:#fff!important}
.close{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;cursor:pointer;display:grid;place-items:center;font-size:16px}
.overlay{position:fixed;inset:0;background:rgba(20,10,0,.32);backdrop-filter:blur(2px);z-index:55}
.hero{position:relative;padding:calc(96px + 28px) 20px 48px;overflow:hidden;background:linear-gradient(180deg,#fff7ed 0%,#fff 68%);min-height:560px;display:grid;place-items:center;text-align:center}
.hero-bg{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(36px);opacity:.5}
.b1{width:520px;height:520px;background:radial-gradient(circle at 30% 30%,#ffd2a8,#ff8c2f 55%,transparent 70%);top:-120px;right:-80px;animation:float 8s ease-in-out infinite}
.b2{width:460px;height:460px;background:radial-gradient(circle at 50% 50%,#ffe9d0,#ffb86a 60%,transparent 70%);bottom:-140px;left:-100px;animation:float 10s ease-in-out infinite reverse}
.b3{width:320px;height:320px;background:radial-gradient(circle,#fff3a0,transparent 70%);top:40%;left:50%;opacity:.35;animation:float 12s ease-in-out infinite}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(14px,-18px) scale(1.04)}}
.hero-inner{position:relative;width:min(760px,100%);display:grid;justify-items:center;gap:16px}
.eyebrow{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--orange);font-weight:700;background:var(--orange3);border:1px solid var(--line);padding:7px 14px;border-radius:100px}
.eyebrow.orange{background:#fff;border-color:var(--line)}
h1{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;letter-spacing:-.05em;line-height:.95;font-size:clamp(2rem,6vw,3.6rem)}
h1 em{color:var(--orange);font-style:normal;position:relative}
.hero-desc{max-width:620px;color:var(--muted);font-size:clamp(.95rem,2.4vw,1.08rem)}
.hero-meta{font-size:.9rem;color:var(--muted);background:#fff;border:1px dashed var(--line);padding:8px 14px;border-radius:100px}
.btn-primary{background:var(--orange);color:#fff;border:0;padding:16px 28px;border-radius:100px;font-weight:800;font-size:1rem;cursor:pointer;box-shadow:0 14px 30px rgba(255,107,0,.28);transition:.2s;display:inline-flex;gap:8px;align-items:center}
.btn-primary:hover{transform:translateY(-2px) scale(1.01);box-shadow:0 18px 36px rgba(255,107,0,.34)}
.hero-stats{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:4px}
.hero-stats div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 18px;min-width:110px;display:grid;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.hero-stats strong{font-family:'Plus Jakarta Sans',sans-serif;font-size:1.25rem;line-height:1;color:var(--orange)}
.hero-stats span{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:700}
.features{padding:56px 20px 64px;background:#fff}
.container{width:min(var(--max),100%);margin:0 auto}
.section-head{text-align:center;display:grid;justify-items:center;gap:12px;margin-bottom:32px}
.section-head h2{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;letter-spacing:-.04em;line-height:1.05;font-size:clamp(1.6rem,4vw,2.4rem);max-width:640px}
.section-head h2 span{color:var(--orange)}
.section-desc{color:var(--muted);max-width:560px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.cards{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:grid;gap:12px;position:relative;overflow:hidden;transition:.28s;box-shadow:0 6px 24px rgba(255,107,0,.06)}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--orange),#ffad4a);opacity:0;transition:.28s}
.card:hover{transform:translateY(-6px);box-shadow:0 16px 36px rgba(255,107,0,.14);border-color:#ffc99a}
.card:hover::before{opacity:1}
.icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--orange3);border:1px solid var(--line);font-size:24px}
.card h3{font-family:'Plus Jakarta Sans',sans-serif;font-size:1.04rem;line-height:1.3;letter-spacing:-.02em}
.card p{color:var(--muted);font-size:.94rem;line-height:1.6}
.badge{justify-self:start;background:#1a1a1a;color:#fff;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;font-weight:700;padding:6px 10px;border-radius:100px}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
footer{background:#1a1a1a;color:#ececec;padding:40px 20px 28px;text-align:center}
.footer-inner{display:grid;justify-items:center;gap:16px;max-width:720px;margin:0 auto}
.footer-logo{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,var(--orange),#ff8c2f);display:grid;place-items:center;font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:1.6rem;color:#fff;box-shadow:0 8px 20px rgba(255,107,0,.4);animation:logoFloat 3s ease-in-out infinite}
@keyframes logoFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.footer-about{color:#b8b8b8;font-size:.93rem;line-height:1.7;max-width:600px}
.footer-about strong{color:#fff}
.footer-soc-title{font-family:'Plus Jakarta Sans',sans-serif;font-size:1.1rem;letter-spacing:-.02em;color:#fff;margin-top:4px}
.ig{display:inline-flex;align-items:center;gap:8px;background:#2a2a2a;border:1px solid #3a3a3a;padding:9px 16px;border-radius:100px;font-weight:600;transition:.2s}
.ig:hover{background:#333;border-color:var(--orange)}
.copy{font-size:.8rem;color:#7a7a7a;margin-top:4px}
dialog{margin:auto;border:0;border-radius:24px;padding:0;width:min(480px,calc(100% - 24px));box-shadow:0 24px 60px rgba(0,0,0,.22);animation:pop .28s cubic-bezier(.2,.8,.2,1)}
dialog::backdrop{background:rgba(20,10,0,.42);backdrop-filter:blur(4px)}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}
.qm-head{display:flex;align-items:center;justify-content:space-between;padding:20px 20px 0}
.qm-head h2{font-family:'Plus Jakarta Sans',sans-serif;letter-spacing:-.03em}
.qm-desc{padding:6px 20px 14px;color:var(--muted);font-size:.92rem}
.qm-actions{display:grid;gap:10px;padding:0 20px 20px}
.qm-card{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:var(--orange3);transition:.2s;text-align:left}
.qm-card:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(255,107,0,.12)}
.qm-card.accent{background:var(--orange);color:#fff;border-color:var(--orange)}
.qm-card.accent small{color:rgba(255,255,255,.85)}
.qm-icon{width:44px;height:44px;border-radius:12px;background:#fff;display:grid;place-items:center;font-size:20px;flex-shrink:0;color:var(--dark)}
.qm-card strong{display:block;line-height:1.2}
.qm-card small{display:block;font-size:.8rem;color:var(--muted)}
.page-hero{padding:calc(88px + 18px) 20px 28px;background:linear-gradient(180deg,#fff7ed,#fff);text-align:center}
.dev-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-top:18px}
.dev-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;text-align:center;display:grid;gap:8px;justify-items:center}
.dev-avatar{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--orange),#ffb86a);display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.3rem}
.otp-wrap{max-width:420px;margin:22px auto;display:grid;gap:16px}
.otp-field{border:0;padding:0;display:grid;gap:10px}
.otp-field legend{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;letter-spacing:-.02em;font-size:1rem;text-align:center;width:100%}
.otp-boxes{display:flex;gap:clamp(4px,1vw,6px);justify-content:center;flex-wrap:nowrap!important;width:100%;max-width:460px;margin:0 auto}
.otp-box{flex:1 1 0;min-width:0;width:0;max-width:none;height:clamp(42px,11vw,56px);text-align:center;font-size:clamp(1rem,3.4vw,1.35rem);font-weight:800;border:2px solid var(--line);border-radius:12px;background:#fff;transition:.15s}
.otp-box:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,107,0,.15);outline:0;transform:translateY(-1px)}
.teacher-toggle{display:inline-flex;align-items:center;gap:8px;align-self:center;justify-self:center;background:#fff;border:1px solid var(--line);padding:6px 12px 6px 6px;border-radius:100px;cursor:pointer;font-size:.82rem;font-weight:700;color:var(--muted);transition:.18s}
.teacher-toggle:hover{border-color:var(--orange);color:var(--dark);transform:translateY(-1px)}
.teacher-toggle:focus-visible{outline:3px solid var(--orange);outline-offset:2px}
.teacher-toggle[aria-checked=true]{background:var(--orange);border-color:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,107,0,.22)}
.teacher-toggle[aria-checked=true] .toggle-icon{background:#fff;color:var(--orange)}
.toggle-icon{width:22px;height:22px;border-radius:50%;background:var(--orange3);border:1px solid var(--line);display:grid;place-items:center;font-size:13px;line-height:1;transition:.3s;flex-shrink:0}
.teacher-toggle[aria-checked=true] .toggle-icon{transform:rotate(180deg)}
.btn-full{width:100%;justify-content:center}
.btn-google{width:100%;display:inline-flex;align-items:center;justify-content:center;gap:10px;background:#fff;border:1.5px solid #dadce0;color:#3c4043;font-weight:600;padding:12px 16px;border-radius:100px;cursor:pointer;transition:.18s}
.btn-google:hover:not(:disabled){background:#f8f9fa;box-shadow:0 2px 10px rgba(0,0,0,.08);transform:translateY(-1px)}
.btn-google:disabled{opacity:.48;cursor:not-allowed;filter:grayscale(.15)}
.terms{display:flex;align-items:flex-start;gap:10px;font-size:.86rem;color:var(--muted);line-height:1.45;text-align:left;cursor:pointer;padding:6px 2px}
.terms input{width:18px;height:18px;accent-color:var(--orange);flex-shrink:0;margin-top:2px}
.terms a{color:var(--orange);font-weight:700;text-decoration:underline;text-underline-offset:2px}
.otp-sent{max-width:420px;margin:14px auto;background:#fff;border:1.5px solid var(--line);border-radius:18px;padding:18px;display:grid;gap:12px;text-align:center;box-shadow:0 8px 24px rgba(255,107,0,.08);animation:pop .28s ease}
.otp-sent h3{font-family:'Plus Jakarta Sans',sans-serif;letter-spacing:-.02em}
.otp-sent p{color:var(--muted);font-size:.9rem;line-height:1.5}
.profile-card{max-width:420px;margin:18px auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;display:grid;gap:14px;box-shadow:0 8px 24px rgba(255,107,0,.06);text-align:left}
.profile-card h3{font-family:'Plus Jakarta Sans',sans-serif;text-align:center}
.profile-card label{font-weight:600;font-size:.88rem}
.profile-card input[type=text]{width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid var(--line);font:inherit}
.profile-card input[type=text]:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,107,0,.12);outline:0}
.avatar-upload{display:grid;justify-items:center;gap:10px}
.avatar-preview{width:96px;height:96px;border-radius:50%;background:var(--orange3);border:2px dashed var(--line);display:grid;place-items:center;overflow:hidden;font-size:32px;color:var(--orange)}
.avatar-preview img{width:100%;height:100%;object-fit:cover}
.avatar-preview.has-img{border-style:solid;border-color:var(--orange)}
.file-btn{font-size:.84rem;font-weight:600;color:var(--orange);cursor:pointer;text-decoration:underline;text-underline-offset:2px}
.divider{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.82rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.divider span{padding:0 2px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}