:root{--bg:#0b1020;--surface:#121a2b;--surface-2:#18233a;--text:#f4f7fb;--muted:#9aa8bf;--accent:#8b5cf6;--line:rgba(255,255,255,.1);--shadow:0 20px 60px rgba(0,0,0,.25)}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.site-header{position:sticky;top:0;z-index:20;background:rgba(11,16,32,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner,.container{width:min(1180px,92%);margin:auto}.header-inner{min-height:78px;display:flex;align-items:center;gap:28px}.brand{font-size:1.35rem;font-weight:800;letter-spacing:-.04em;display:flex;align-items:center;gap:10px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#22d3ee);color:white}.main-nav{margin-left:auto}.nav-menu{list-style:none;display:flex;gap:24px;margin:0;padding:0}.nav-menu a{color:var(--muted);font-size:.92rem}.nav-menu a:hover{color:var(--text)}.header-actions{display:flex;gap:10px;align-items:center}.button,.scheme-btn{border:1px solid var(--line);background:var(--surface-2);color:var(--text);padding:10px 15px;border-radius:10px;cursor:pointer;font-weight:700}.button.primary{background:var(--accent);border-color:var(--accent)}.hero{padding:86px 0 64px;background:radial-gradient(circle at 80% 20%,rgba(139,92,246,.22),transparent 36%),radial-gradient(circle at 15% 5%,rgba(34,211,238,.12),transparent 34%)}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:center}.eyebrow{color:#a78bfa;text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;font-weight:800}.hero h1{font-size:clamp(2.8rem,7vw,5.7rem);line-height:.98;letter-spacing:-.07em;margin:18px 0}.hero p{color:var(--muted);font-size:1.15rem;max-width:590px}.hero-actions{display:flex;gap:12px;margin-top:28px}.hero-art{position:relative;min-height:390px}.book-stack{position:absolute;inset:15px 30px 0 40px;border-radius:28px;background:linear-gradient(135deg,#1e293b,#111827);box-shadow:var(--shadow);overflow:hidden}.book-stack img{width:100%;height:100%;object-fit:cover;opacity:.9}.book-stack:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,16,32,.05),rgba(11,16,32,.62))}.floating-card{position:absolute;right:0;bottom:28px;z-index:2;background:rgba(24,35,58,.9);border:1px solid var(--line);padding:16px 18px;border-radius:16px;box-shadow:var(--shadow)}.section{padding:68px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:24px}.section-title{font-size:2rem;letter-spacing:-.05em;margin:0}.section-note{color:var(--muted)}.feature-grid,.book-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.book-grid{grid-template-columns:repeat(4,1fr)}.feature-card,.book-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .2s,border-color .2s}.feature-card:hover,.book-card:hover{transform:translateY(-5px);border-color:var(--accent)}.feature-card img{width:100%;height:180px;object-fit:cover}.feature-body,.book-body{padding:17px}.feature-body h3,.book-body h3{margin:0 0 6px}.feature-body p,.book-meta{color:var(--muted);margin:0}.book-card img{width:100%;height:270px;object-fit:cover;background:var(--surface-2)}.stars{color:#fbbf24;letter-spacing:2px;font-size:.82rem}.book-meta{display:flex;justify-content:space-between;gap:8px;margin-top:10px;font-size:.85rem}.price{color:#c4b5fd;font-weight:800}.promo{border:1px solid var(--line);border-radius:22px;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;background:var(--surface)}.promo img{width:100%;height:250px;object-fit:cover}.promo-copy{padding:36px}.promo-copy h2{font-size:2rem;line-height:1.05;margin-top:0}.site-footer{padding:50px 0 25px;border-top:1px solid var(--line);color:var(--muted)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.footer-title{color:var(--text);font-weight:800}.scheme-picker{position:fixed;right:20px;bottom:20px;z-index:30;background:var(--surface);border:1px solid var(--line);padding:12px;border-radius:15px;box-shadow:var(--shadow);display:flex;gap:6px;align-items:center}.scheme-picker span{font-size:.78rem;color:var(--muted);margin-right:3px}.scheme-btn{padding:7px 9px;font-size:.75rem}.scheme-btn.active{outline:2px solid var(--accent);outline-offset:1px}.screen-reader-text{position:absolute;left:-9999px}@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-art{min-height:300px}.book-grid{grid-template-columns:repeat(2,1fr)}.nav-menu{gap:12px}.header-actions .button{display:none}}@media(max-width:600px){.header-inner{gap:12px}.main-nav{display:none}.feature-grid,.book-grid,.promo,.footer-grid{grid-template-columns:1fr}.hero{padding-top:55px}.book-card img{height:320px}.scheme-picker{right:10px;bottom:10px}}
body.scheme-emerald{--bg:#071a17;--surface:#0e2823;--surface-2:#14382f;--accent:#10b981}body.scheme-warm{--bg:#f5efe6;--surface:#fffaf2;--surface-2:#efe4d3;--text:#2b2118;--muted:#756657;--line:rgba(71,47,28,.16);--accent:#b45309}body.scheme-warm .site-header{background:rgba(245,239,230,.9)}