/* Вариант B — тихий интерфейс, ярко только товары. Mobile first: база 390px */
:root{--y:#FFEF00;--ink:#111;--mute:#6b6b6b;--line:#e6e6e3;--soft:#f5f4f0;--hh:56px}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 8px)}
body{font-family:'Golos Text',system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--ink);background:#fff;line-height:1.5;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
button{font-family:inherit}
.wrap{width:min(1200px,100% - 32px);margin-inline:auto}
h1,h2,h3{font-weight:600;letter-spacing:-.02em;line-height:1.1}
h2{font-size:28px}
.head{margin-bottom:24px}
.head p{color:var(--mute);margin-top:6px}
.mark{background:linear-gradient(transparent 62%,var(--y) 62%);padding:0 .08em}
.badge{display:inline-block;background:var(--y);color:var(--ink);font-size:11px;font-weight:600;padding:3px 9px;border-radius:99px;line-height:1.3;vertical-align:middle}

/* кнопки: чёрные, тап ≥ 44px */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 28px;border:1px solid var(--ink);border-radius:99px;background:var(--ink);color:#fff;font-size:16px;font-weight:500;text-decoration:none;cursor:pointer;transition:background .2s,color .2s,box-shadow .2s}
.btn:hover{background:var(--y);color:var(--ink);box-shadow:0 0 0 1px var(--ink) inset}
.btn--sm{min-height:44px;width:100%;padding:8px 14px;font-size:14px}
.btn.is-done{background:#fff;color:var(--ink)}

/* шапка: бургер — логотип по центру — корзина */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header__in{position:relative;display:flex;align-items:center;justify-content:space-between;height:var(--hh);padding:0 6px}
.burger,.cart{position:relative;display:grid;place-items:center;width:44px;height:44px;border:0;background:none;color:var(--ink);cursor:pointer}
.burger{align-content:center;gap:6px}
.burger span{display:block;width:22px;height:1.5px;background:var(--ink);transition:transform .2s}
.is-open .burger span:nth-child(1){transform:translateY(3.7px) rotate(45deg)}
.is-open .burger span:nth-child(2){transform:translateY(-3.7px) rotate(-45deg)}
.brand{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:600;font-size:17px;letter-spacing:-.02em;white-space:nowrap}
.brand img{width:30px;height:30px}
.cart__count{position:absolute;top:4px;right:2px;min-width:18px;height:18px;padding:0 4px;border-radius:99px;background:var(--ink);color:#fff;font-size:11px;font-weight:600;display:grid;place-items:center}
.cart__count.on{background:var(--y);color:var(--ink);box-shadow:0 0 0 1px var(--ink)}
.nav{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:4px 20px 12px}
.is-open .nav{display:flex}
.nav a{text-decoration:none;font-size:18px;padding:14px 0;border-bottom:1px solid var(--line)}
.nav a:last-child{border:0}

/* первый экран */
.hero{position:relative;display:flex;flex-direction:column;background:radial-gradient(120% 80% at 50% 30%,#fff8b8 0,#f6f3ea 60%,#efece4 100%);overflow:hidden;min-height:calc(100svh - var(--hh));min-height:calc(100vh - var(--hh))}
.hero__media{flex:1;display:grid;place-items:center;padding:28px 40px 0}
.hero__card{width:min(68vw,300px);height:auto;border-radius:6px;transform:rotate(-3deg);box-shadow:0 30px 50px -18px rgba(0,0,0,.45),0 6px 14px rgba(0,0,0,.12);transition:transform .5s}
.hero__card:hover{transform:rotate(0) scale(1.02)}
.hero__copy{position:relative;z-index:2;display:flex;flex-direction:column;align-items:flex-start;gap:14px;padding:0 20px 28px;margin-top:-84px}
.hero__kicker{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.14em;color:var(--mute)}
.hero h1{font-size:34px;max-width:11em;text-shadow:0 0 14px rgba(246,243,234,.9)}

/* каталог */
.catalog{padding:44px 0 48px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 12px}
.card{display:flex;flex-direction:column;min-width:0}
.card__pic{position:relative;aspect-ratio:4/5;background:var(--soft);display:grid;place-items:center;padding:14px;border-radius:6px;overflow:hidden}
.card__pic img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 8px 10px rgba(0,0,0,.22));transition:transform .4s}
.card:hover .card__pic img{transform:scale(1.04)}
.card__pic .badge{position:absolute;z-index:2;top:8px;left:8px}
.card__body{display:flex;flex-direction:column;flex:1;padding-top:10px}
.card h3{font-size:15px;font-weight:600;min-height:2.2em;margin-bottom:6px}
.card p{display:none;color:var(--mute);font-size:14px;margin-bottom:14px}
.card__foot{margin-top:auto;display:flex;flex-direction:column;gap:8px}
.price{font-weight:600;font-size:16px;white-space:nowrap}

/* допродажа */
.upsell{display:flex;align-items:flex-start;gap:14px;margin-top:32px;padding:16px;border:1px solid var(--line);border-radius:10px;cursor:pointer;min-height:44px;transition:border-color .2s,background .2s}
.upsell:hover{border-color:var(--ink)}
.upsell input{position:absolute;opacity:0;pointer-events:none}
.upsell__box{flex:none;display:grid;place-items:center;width:24px;height:24px;margin-top:2px;border:1.5px solid var(--ink);border-radius:5px;color:transparent;transition:background .15s}
.upsell input:checked+.upsell__box{background:var(--y);color:var(--ink)}
.upsell input:focus-visible+.upsell__box{outline:2px solid var(--ink);outline-offset:2px}
.upsell__text{display:flex;flex-direction:column;gap:2px;font-size:15px}
.upsell__text strong{font-weight:600}
.upsell__text span{color:var(--mute);font-size:14px}
.upsell__text b{color:var(--ink);font-weight:600;background:linear-gradient(transparent 60%,var(--y) 60%)}

/* сборник */
.book{background:var(--soft);padding:44px 0}
.book__in{display:grid;gap:28px;align-items:center}
.book__pic{justify-self:center;width:min(52%,200px)}
.book__pic img{width:100%;height:auto;border-radius:3px 8px 8px 3px;box-shadow:0 22px 34px -14px rgba(0,0,0,.45)}
.book h2{margin:10px 0 12px}
.book__lead{font-size:17px;font-weight:500;margin-bottom:10px}
.book__text>p:not(.book__lead){color:var(--mute);font-size:15px}
.book__buy{display:flex;align-items:center;gap:20px;margin-top:20px}
.book__buy .price{font-size:22px}

/* как это работает */
.how{padding:48px 0 8px}
.steps{list-style:none;padding:0;display:grid;gap:0}
.steps li{position:relative;display:grid;grid-template-columns:48px 1fr;column-gap:16px;padding:20px 0;border-top:1px solid var(--line)}
.steps svg{grid-row:1/4;width:48px;height:48px;color:var(--ink)}
.step__n{font-size:12px;font-weight:600;color:var(--mute);letter-spacing:.1em}
.steps h3{font-size:18px;margin:2px 0 4px}
.steps p{color:var(--mute);font-size:15px}

/* доставка */
.delivery{padding:40px 0 56px}
.dgrid{display:grid;gap:0}
.dgrid article{display:flex;gap:16px;align-items:flex-start;padding:20px 0;border-top:1px solid var(--line)}
.dgrid svg{flex:none;width:44px;height:44px}
.dgrid h3{font-size:17px;margin-bottom:4px}
.dgrid p{color:var(--mute);font-size:15px}

/* подвал */
.footer{border-top:1px solid var(--line);padding:28px 0 36px}
.footer__in{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer .brand{position:static;transform:none}
.footer__c{color:var(--mute);font-size:13px}

/* ≥ 720px */
@media (min-width:720px){
  .wrap{width:min(1200px,100% - 64px)}
  h2{font-size:36px}
  .grid{gap:32px 20px}
  .card p{display:block}
  .card__foot{flex-direction:row;align-items:center;justify-content:space-between}
  .card h3{font-size:18px;min-height:0}
  .btn--sm{width:auto;padding:8px 20px}
  .price{font-size:18px}
  .book__in{grid-template-columns:auto 1fr;gap:64px}
  .book__pic{width:230px}
  .steps,.dgrid{grid-template-columns:repeat(3,1fr);column-gap:40px}
  .footer__in{flex-direction:row;align-items:center;gap:12px 40px}
  .footer__c{margin-left:auto}
}

/* ≥ 1000px: навигация в строку */
@media (min-width:1000px){
  :root{--hh:64px}
  .header__in{width:min(1200px,100% - 64px);margin:0 auto;padding:0}
  .burger{display:none}
  .brand{position:static;transform:none;order:0;font-size:18px}
  .nav{position:static;display:flex;flex-direction:row;gap:28px;padding:0;border:0;background:none;margin-left:auto;margin-right:16px}
  .nav a{font-size:15px;padding:6px 0;border:0;background:linear-gradient(var(--y),var(--y)) 0 100%/0 3px no-repeat;transition:background-size .25s}
  .nav a:hover{background-size:100% 3px}
  .cart{order:3}

  .hero{flex-direction:row-reverse;align-items:stretch;min-height:min(calc(100vh - var(--hh)),760px)}
  .hero__media{flex:1.1;padding:40px}
  .hero__card{width:min(30vw,400px)}
  .hero__copy{flex:1;justify-content:center;gap:24px;margin:0;padding:0 0 0 max(32px,calc((100vw - 1200px)/2));z-index:2}
  .hero h1{font-size:clamp(44px,5vw,72px);max-width:9em;text-shadow:none}
  .hero__kicker{font-size:13px}
  .catalog{padding:80px 0 80px}
  .grid{grid-template-columns:repeat(4,1fr)}
  .card__pic{padding:22px}
  .upsell{max-width:640px;margin:48px auto 0;padding:20px 24px}
  .book{padding:80px 0}
  .book__pic{width:280px}
  .book__lead{font-size:20px}
  .book__text>p:not(.book__lead){max-width:36em;font-size:16px}
  .how{padding:80px 0 20px}
  .steps li{grid-template-columns:1fr;border-top:1px solid var(--line);padding:28px 0}
  .steps svg{grid-row:auto;margin-bottom:14px}
  .delivery{padding:60px 0 90px}
  .dgrid article{padding:28px 0}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}