:root{
  --bg:#f8fafc;--card:#fff;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--blue:#2563eb;--blue2:#dbeafe;--green:#16a34a;--red:#ef4444;--amber:#f59e0b;
  --radius:18px;--shadow:0 16px 40px rgba(15,23,42,.08);
}
*{box-sizing:border-box} body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}.container{max-width:1200px;margin:0 auto;padding:0 24px}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:22px}.brand-mark{width:38px;height:38px}.brand span span{color:var(--blue)}.navlinks{display:flex;gap:44px;font-size:14px;color:#334155}.nav-actions{display:flex;align-items:center;gap:16px}.btn{border:1px solid var(--line);border-radius:10px;padding:12px 18px;font-weight:700;font-size:14px;background:#fff;display:inline-flex;align-items:center;gap:8px;cursor:pointer}.btn-primary{background:var(--blue);color:white;border-color:var(--blue);box-shadow:0 8px 18px rgba(37,99,235,.22)}.btn-outline{color:var(--blue);border-color:#93c5fd;background:white}.btn-sm{padding:8px 12px;font-size:13px}.hero{background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center;padding:64px 24px}.hero h1{font-size:56px;line-height:1.04;letter-spacing:-.04em;margin:0 0 22px}.accent{color:var(--blue)}.hero p{font-size:18px;color:var(--muted);line-height:1.6}.searchbar{height:58px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 28px rgba(15,23,42,.07);display:flex;align-items:center;gap:12px;padding:0 18px;max-width:520px}.searchbar input{border:0;outline:0;flex:1;font-size:15px}.hero-visual{min-height:330px;border-radius:42px;background:radial-gradient(circle at 50% 50%,#dbeafe,#f8fafc 68%);display:flex;align-items:center;justify-content:center}.device-card{width:270px;height:340px;background:#fff;border:10px solid #1f2937;border-radius:28px;box-shadow:var(--shadow);padding:28px;font-family:Georgia,serif}.device-card h3{font-size:34px;line-height:.95;margin:0 0 10px}.section{padding:34px 0}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.section h2{font-size:24px;margin:0}.link{color:var(--blue);font-weight:700;font-size:14px}.grid-books{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}.book-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:0 8px 22px rgba(15,23,42,.04);transition:.2s}.book-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.cover{aspect-ratio:3/4;border-radius:10px;background:linear-gradient(135deg,#fef3c7,#dbeafe);display:flex;align-items:center;justify-content:center;text-align:center;padding:18px;font-family:Georgia,serif;font-weight:700;color:#172554;overflow:hidden}.cover img{width:100%;height:100%;object-fit:cover;display:block;border-radius:inherit}.book-card .cover:has(img),.big-cover:has(img){padding:0;background:#fff}.cover.dark{background:linear-gradient(135deg,#0f172a,#1d4ed8);color:white}.cover.orange{background:linear-gradient(135deg,#7c2d12,#fde68a);color:#451a03}.cover.green{background:linear-gradient(135deg,#0f766e,#fef08a);color:white}.book-title{font-weight:800;margin-top:12px;font-size:15px}.book-meta{font-size:13px;color:var(--muted);margin-top:3px}.badges{display:flex;gap:6px;margin:10px 0}.badge{font-size:11px;background:#f1f5f9;border:1px solid var(--line);border-radius:6px;padding:4px 7px;color:#334155}.category-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:16px}.cat-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 12px;text-align:center}.cat-icon{font-size:30px;color:var(--blue)}.footer{background:#f1f5f9;border-top:1px solid var(--line);padding:38px 0 22px;margin-top:42px}.footer-grid{display:grid;grid-template-columns:2fr repeat(5,1fr);gap:28px}.footer h4{margin:0 0 12px}.footer a,.footer p{font-size:13px;color:var(--muted);display:block;margin:7px 0}.copyright{text-align:center;font-size:13px;color:var(--muted);margin-top:24px}.page-title{padding:46px 0 30px;background:#fff;border-bottom:1px solid var(--line)}.page-title h1{font-size:44px;letter-spacing:-.04em;margin:0 0 8px}.catalog-layout{display:grid;grid-template-columns:250px 1fr;gap:28px;padding-top:28px}.filter-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;position:sticky;top:100px}.filter-block{padding:18px;border-bottom:1px solid var(--line)}.filter-row{display:flex;justify-content:space-between;font-size:14px;margin:10px 0;color:#475569}.filter-row.active{color:var(--blue);font-weight:800}.toolbar{display:grid;grid-template-columns:1fr repeat(3,180px);gap:14px;margin-bottom:22px}.select,.input{border:1px solid var(--line);background:#fff;border-radius:12px;height:50px;padding:0 14px}.detail-grid{display:grid;grid-template-columns:360px 1fr;gap:58px;padding-top:42px}.big-cover{border-radius:18px;box-shadow:var(--shadow);height:500px}.metadata{display:grid;grid-template-columns:140px 1fr;gap:14px;margin:24px 0}.metadata dt{color:var(--muted)}.metadata dd{margin:0}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}.two-panels{display:grid;grid-template-columns:1.35fr .85fr;gap:0}.reader-shell{height:100vh;display:grid;grid-template-rows:78px 1fr 68px;background:#f8fafc}.reader-top{display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:#fff;border-bottom:1px solid var(--line)}.reader-main{display:grid;grid-template-columns:210px 1fr;overflow:hidden}.thumbs{background:#fff;border-right:1px solid var(--line);padding:18px;overflow:auto}.pdf-page{margin:50px auto;background:#fff;width:min(720px,80%);min-height:920px;box-shadow:var(--shadow);padding:96px 120px;font-family:Georgia,serif;font-size:20px;line-height:1.75}.reader-bottom{display:flex;align-items:center;gap:24px;padding:0 32px;background:#fff;border-top:1px solid var(--line)}.progress{height:8px;background:#e2e8f0;border-radius:999px;flex:1;overflow:hidden}.progress span{display:block;height:100%;background:var(--blue)}.auth-wrap{min-height:calc(100vh - 260px);display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:72px 24px}.auth-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:36px;box-shadow:var(--shadow)}.tabs{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line);margin-bottom:30px}.tab{padding:0 0 16px;text-align:center;font-weight:800}.tab.active{border-bottom:3px solid var(--blue)}.admin-body{display:grid;grid-template-columns:280px 1fr;min-height:100vh}.admin-sidebar{background:#fff;border-right:1px solid var(--line);padding:28px}.admin-content{padding:34px;background:#f8fafc}.admin-menu a{display:flex;gap:12px;align-items:center;padding:13px 16px;border-radius:12px;color:#334155;margin:4px 0}.admin-menu a.active{background:var(--blue);color:#fff}.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.kpi{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}.admin-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.admin-table th,.admin-table td{padding:14px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}.status{font-size:12px;border-radius:999px;padding:5px 9px;background:#dcfce7;color:#166534;font-weight:800}.status.draft{background:#f1f5f9;color:#475569}.status.red{background:#fee2e2;color:#991b1b}.mobile-only{display:none}
@media(max-width:900px){.container{padding:0 16px}.navlinks{display:none}.hero-grid,.detail-grid,.auth-wrap,.catalog-layout,.two-panels,.admin-body{grid-template-columns:1fr}.hero h1{font-size:38px}.hero-visual{display:none}.grid-books{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.toolbar{grid-template-columns:1fr}.filter-card{position:static}.reader-main{grid-template-columns:1fr}.thumbs{display:none}.pdf-page{width:94%;padding:50px 30px}.kpi-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.admin-sidebar{display:none}.mobile-only{display:block}}