:root{--brand:#178a52;--brand-dark:#136e43;--bg:#f8fafc;--text:#0f172a;--muted:#64748b;--border:#e2e8f0;--card:#fff}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.container{max-width:1200px;margin:0 auto;padding:0 20px}.header{position:sticky;top:0;background:rgba(255,255,255,.95);border-bottom:1px solid var(--border);backdrop-filter:blur(12px);z-index:50}.header-inner{display:flex;justify-content:space-between;align-items:center;height:76px}.brand{display:flex;gap:12px;align-items:center}.brand-box{width:48px;height:48px;background:var(--brand);border-radius:16px;color:#fff;display:grid;place-items:center;font-weight:700}.nav{display:flex;gap:24px;align-items:center}.btn{display:inline-block;padding:12px 18px;border-radius:14px;font-weight:600}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark)}.btn-secondary{border:1px solid var(--border);background:#fff}.hero{padding:70px 0;background:linear-gradient(135deg,#ecfdf5,#fff,#f1f5f9)}.grid{display:grid;gap:24px}.grid-2{grid-template-columns:1.2fr 1fr}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:var(--card);border:1px solid var(--border);border-radius:24px;box-shadow:0 10px 30px rgba(15,23,42,.05)}.section{padding:64px 0}.muted{color:var(--muted)}.badge{display:inline-block;background:#dcfce7;color:#166534;padding:7px 12px;border-radius:999px;font-size:12px;font-weight:700}.book-cover{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:24px 24px 0 0}.book-card .body{padding:20px}.book-meta{display:flex;justify-content:space-between;align-items:center;font-size:14px}.partner-box{display:flex;align-items:center;justify-content:center;min-height:120px;padding:24px}.footer{margin-top:80px;padding:50px 0;border-top:1px solid var(--border);background:#fff}.admin-shell{display:grid;grid-template-columns:260px 1fr;gap:24px;padding:32px 0}.sidebar{padding:20px}.sidebar a{display:block;padding:12px 14px;border-radius:14px;margin-bottom:8px}.sidebar a:hover{background:#f1f5f9}.topbar,.content-card{padding:24px}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:14px;border-bottom:1px solid var(--border);text-align:left}.input,.textarea,.select{width:100%;padding:12px 14px;border:1px solid #cbd5e1;border-radius:14px;background:#fff}.textarea{min-height:140px}.form-grid{display:grid;gap:16px;grid-template-columns:repeat(2,1fr)}.full{grid-column:1/-1}.alert{padding:14px 16px;border-radius:14px;background:#ecfdf5;color:#166534;margin-bottom:16px}.error{padding:12px 14px;border-radius:14px;background:#fef2f2;color:#991b1b;margin-bottom:14px}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#ecfdf5,#fff,#f1f5f9)}.login-card{width:100%;max-width:440px;padding:32px}@media(max-width:900px){.grid-2,.grid-4,.admin-shell,.form-grid{grid-template-columns:1fr}.nav{display:none}}