:root{--bg:#0f1115;--panel:#171a21;--panel2:#1e222b;--text:#f4f1e9;--muted:#a6acb5;--line:#2d323c;--gold:#d8b46b;--paper:#f3eee4;--ink:#262118;--radius:28px;--shadow:0 30px 70px rgba(0,0,0,.35)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at 70% 0%,rgba(216,180,107,.08),transparent 32%),var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}button,input{font:inherit}button{cursor:pointer}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.topbar{position:sticky;top:0;z-index:20;background:rgba(15,17,21,.82);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.05)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--gold);color:#15120c}.desktop-nav{display:flex;gap:28px;color:var(--muted)}
.btn{border:1px solid var(--line);border-radius:999px;padding:12px 18px;background:transparent;color:var(--text);display:inline-flex;align-items:center;justify-content:center;font-weight:700}.btn-primary{background:var(--gold);color:#17130c;border-color:var(--gold)}.btn.small{padding:9px 14px;font-size:.9rem}.full{width:100%;margin-top:10px}
.hero{min-height:690px;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;padding-block:70px}.kicker{font-size:.75rem;letter-spacing:.19em;font-weight:800;color:var(--gold);margin:0}.hero h1{font-size:clamp(3.3rem,7vw,7rem);letter-spacing:-.06em;line-height:.9;margin:20px 0 28px}.hero h1 span{color:var(--gold)}.lead{color:var(--muted);font-size:1.15rem;line-height:1.7;max-width:660px}.hero-buttons{display:flex;gap:12px;margin:34px 0 26px}.badges{display:flex;flex-wrap:wrap;gap:18px;color:#c7cbd2;font-size:.88rem}
.hero-device{display:grid;place-items:center}.ipad{width:min(100%,430px);aspect-ratio:3/4;border:12px solid #292d35;background:#07090b;border-radius:42px;padding:7px;box-shadow:var(--shadow);transform:rotate(3deg)}.ipad-inner{height:100%;border-radius:25px;background:linear-gradient(150deg,#eee6d7,#d8cfbd);display:grid;place-items:center;padding:42px}.book-preview{text-align:center;color:#2b251a}.book-preview small{letter-spacing:.17em}.book-preview h2{font:700 3rem/1.02 Georgia,serif;margin:20px 0 8px}.book-preview p{line-height:1.6}.rule{height:1px;background:#796f5d;width:62%;margin:27px auto}.quote{font-family:Georgia,serif}
.section{padding-block:92px}.section-title{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.section-title h2,.about h2{margin:8px 0 0;font-size:clamp(2.3rem,4vw,4rem);letter-spacing:-.04em}.section-title>p,.about>p{color:var(--muted);line-height:1.7;max-width:480px}
.book-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.book-card{background:linear-gradient(155deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.25s}.book-card:hover{transform:translateY(-6px)}.cover{aspect-ratio:1/1.42;border-radius:16px;padding:26px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 18px 38px rgba(0,0,0,.28);margin-bottom:20px}.cover.gold{background:linear-gradient(150deg,#c99d4a,#3c2e1a)}.cover.blue{background:linear-gradient(150deg,#527d93,#142632)}.cover.red{background:linear-gradient(150deg,#905049,#281919)}.cover strong{font:700 2rem/1.05 Georgia,serif}.book-info{display:flex;justify-content:space-between;gap:14px}.book-info h3{margin:0 0 5px}.book-info p{margin:0;color:var(--muted);font-size:.9rem}.price{color:var(--gold);font-weight:800;white-space:nowrap}.card-actions{display:flex;gap:9px;margin-top:18px}.card-actions .btn{flex:1;padding:10px 12px}
.reader-shell{display:grid;grid-template-columns:245px 1fr;min-height:610px;border:1px solid var(--line);border-radius:34px;overflow:hidden;background:var(--panel)}.reader-sidebar{padding:34px;border-right:1px solid var(--line)}.reader-sidebar h3{margin:10px 0 24px}.chapter-btn{display:block;width:100%;text-align:left;background:none;border:0;color:var(--muted);padding:11px 0}.chapter-btn:hover,.chapter-btn.active{color:var(--gold)}.reader-page{background:var(--paper);color:var(--ink);padding:32px clamp(28px,7vw,90px)}.reader-page.dark{background:#171a20;color:#e7e1d6}.reader-toolbar{display:flex;justify-content:space-between;border-bottom:1px solid #d3cbbb;padding-bottom:18px;color:#6d665a;font-size:.8rem;letter-spacing:.12em}.reader-actions button{border:0;background:transparent;color:inherit;padding:6px 8px}.chapter-text{max-width:740px;margin:60px auto;font:1.13rem/1.9 Georgia,serif}.chapter-text h2{font-size:2.5em;line-height:1.08;margin:0 0 26px}
.about{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;border-top:1px solid var(--line)}.footer{border-top:1px solid var(--line);padding:30px 0 60px;display:flex;justify-content:space-between;color:var(--muted);font-size:.85rem}
.modal{position:fixed;inset:0;z-index:50;display:none;place-items:center;padding:20px;background:rgba(0,0,0,.73);backdrop-filter:blur(10px)}.modal.open{display:grid}.modal-card{width:min(520px,100%);max-height:90vh;overflow:auto;background:#171b22;border:1px solid var(--line);border-radius:28px;padding:30px;box-shadow:var(--shadow);position:relative}.modal-close{position:absolute;right:20px;top:15px;border:0;background:none;color:#fff;font-size:2rem}.modal-card h2{font-size:2rem;margin:12px 0 4px}.checkout-price{color:var(--gold);font-weight:800}label{display:block;color:#c4c8cf;font-size:.9rem;margin:14px 0}input{width:100%;margin-top:7px;padding:14px;border-radius:14px;border:1px solid var(--line);color:#fff;background:#0f1217}.help{color:var(--muted);line-height:1.55;font-size:.88rem}.demo-box{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0}.demo-box>div{background:#0f1217;border:1px solid var(--line);border-radius:16px;padding:16px}.demo-box span{display:block;color:var(--muted);font-size:.78rem;margin-bottom:6px}.demo-box strong{color:var(--gold);word-break:break-word}
@media(max-width:900px){.hero{grid-template-columns:1fr}.book-grid{grid-template-columns:1fr 1fr}.reader-shell{grid-template-columns:1fr}.reader-sidebar{display:flex;gap:10px;overflow:auto;border-right:0;border-bottom:1px solid var(--line);padding:18px 22px}.reader-sidebar .kicker,.reader-sidebar h3{display:none}.chapter-btn{width:auto;white-space:nowrap;padding:8px 10px}.about{grid-template-columns:1fr}}
@media(max-width:620px){.container{width:min(100% - 24px,1180px)}.desktop-nav{display:none}.nav{min-height:66px}.hero{padding-block:45px;gap:26px}.hero-buttons{flex-direction:column}.hero-buttons .btn{width:100%}.ipad{width:82%;border-width:9px}.ipad-inner{padding:24px}.book-preview h2{font-size:2rem}.section{padding-block:66px}.section-title{display:block}.book-grid{grid-template-columns:1fr}.reader-page{padding:24px 20px}.chapter-text{font-size:1rem;margin:36px auto}.footer{display:block;line-height:1.8}.demo-box{grid-template-columns:1fr}}

.cover-image-wrap{aspect-ratio:1/1.42;border-radius:16px;overflow:hidden;background:#111;margin-bottom:20px;box-shadow:0 18px 38px rgba(0,0,0,.28)}
.cover-image{width:100%;height:100%;object-fit:cover;display:block}.price-block{display:flex;flex-direction:column;align-items:flex-end;gap:4px}
.old-price{text-decoration:line-through;color:var(--muted);font-size:.82rem}.discount-badge{background:var(--gold);color:#17130c;border-radius:999px;padding:3px 8px;font-size:.72rem;font-weight:800}
.book-desc{color:var(--muted);line-height:1.55;font-size:.9rem;min-height:44px}.admin-link{position:fixed;right:18px;bottom:18px;z-index:30}

.catalog-filters{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 26px}
.catalog-filters select{background:#151922;color:#fff;border:1px solid var(--line);border-radius:999px;padding:11px 16px}
.book-taxonomy{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 0}
.taxonomy-chip{font-size:.72rem;border:1px solid var(--line);border-radius:999px;padding:4px 8px;color:var(--muted)}
@media(max-width:620px){.catalog-filters select{width:100%}}

.brand-logo {
    width: 42px !important;
    height: 42px !important;
    max-width: 42px !important;
    max-height: 42px !important;
    object-fit: contain;
    display: block;
    flex: 0 0 42px;
    border-radius: 8px;
}
@media (max-width: 620px) {
    .brand-logo {
        width: 34px !important;
        height: 34px !important;
        max-width: 34px !important;
        max-height: 34px !important;
        flex-basis: 34px;
    }
}