:root{--navy:#101428;--navy2:#181d36;--teal:#28d0b8;--ink:#141a2e;--mute:#5a6178;--tint:#eef0f6;--max:1080px}
*{box-sizing:border-box}
body{margin:0;font:400 17px/1.6 Archivo,Helvetica,Arial,sans-serif;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:Archivo,Helvetica,Arial,sans-serif;font-weight:800;line-height:1.1;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(42px,6vw,64px)}
h2{font-size:clamp(28px,3.6vw,40px)}
h3{font-size:19px;font-weight:700;margin-bottom:.35em}
.wrap{max-width:var(--max);margin:0 auto;padding:80px 20px}
.narrow{max-width:640px;text-align:center}
.eyebrow{display:block;font:600 12px Poppins,sans-serif;letter-spacing:.18em;text-transform:uppercase;color:var(--mute);margin:0 0 12px}
.eyebrow.teal,.dark .eyebrow{color:var(--teal)}
.lede{font-size:18px;max-width:620px;margin:0 0 28px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.dark{background:var(--navy);color:#fff}
.dark .lede{color:#c9cde0}
.tint{background:var(--tint)}

/* hero */
.hero .wrap{padding-top:96px;padding-bottom:96px}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero-cover{margin:0;text-align:center}
.hero-cover img{width:100%;max-width:320px;margin:0 auto;border-radius:4px;box-shadow:0 30px 60px rgba(0,0,0,.45)}
.hero-cover figcaption{font:500 11px Poppins,sans-serif;letter-spacing:.2em;text-transform:uppercase;color:#9aa0b8;margin-top:14px}
@media (max-width:780px){.hero-grid{grid-template-columns:1fr}.hero-cover img{max-width:240px}}

/* signup */
.signup{display:flex;flex-wrap:wrap;gap:10px;max-width:520px}
.narrow .signup{margin:0 auto;justify-content:center}
.signup input{flex:1 1 220px;font:inherit;font-size:16px;padding:14px 14px;border-radius:5px;border:1px solid #cfd3e0;background:#fff;color:var(--ink)}
.signup button{flex:none;font:700 16px Archivo,sans-serif;background:var(--teal);color:var(--navy);border:0;border-radius:5px;padding:14px 20px;cursor:pointer}
.signup button:hover{filter:brightness(1.07)}
.signup button:disabled{opacity:.6}
.fine{flex-basis:100%;font-size:13px;color:#9aa0b8;margin:4px 0 0}
.narrow .fine{text-align:center}
.status{flex-basis:100%;margin:6px 0 0;padding:10px 12px;border-radius:5px;font-size:15px}
.status.ok{background:rgba(40,208,184,.16)}
.status.err{background:rgba(240,110,110,.18)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:12px}
.card{background:#fff;border-radius:8px;padding:24px}
.cards.soft .card{background:var(--tint)}
.card p{margin:0;color:var(--mute)}

/* books */
.books{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:36px 32px;margin-top:12px;max-width:860px}
@media (max-width:640px){.books{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 18px}}
.book{margin:0}
.book img{width:100%;aspect-ratio:600/776;object-fit:cover;border-radius:3px;margin-bottom:12px;box-shadow:0 12px 26px rgba(0,0,0,.35)}
.book strong{display:block;font-size:16px}
.book span{display:block;font:500 11px Poppins,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:#9aa0b8;margin-top:4px}
.book em{display:block;font:500 11px Poppins,sans-serif;font-style:normal;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-top:4px}

/* teacher */
.teacher{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
.teacher img{border-radius:8px;width:100%;aspect-ratio:4/5;object-fit:cover}
.teacher p{color:var(--mute)}
blockquote{margin:24px 0;padding-left:20px;border-left:3px solid var(--teal);font-size:19px;line-height:1.5;color:var(--ink)}
.more{font-size:15px}
@media (max-width:780px){.teacher{grid-template-columns:1fr}.teacher img{max-width:380px}}

.foot{background:var(--navy);color:#9aa0b8;font-size:14px;border-top:1px solid var(--navy2)}
.foot .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:28px;padding-bottom:28px}
.foot p{margin:0}