:root{--navy:#061f3b;--navy2:#0a3157;--blue:#087cf0;--cyan:#10c7ee;--paper:#f5f8fb;--card:#fff;--ink:#08223d;--muted:#5d6b7a;--line:#dce5ed}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--paper);color:var(--ink);line-height:1.55}.wrap{width:min(1120px,92%);margin:auto}.nav{background:var(--navy);color:white}.nav .wrap{display:flex;justify-content:space-between;align-items:center;padding:16px 0;gap:20px}.brand{font-weight:900;letter-spacing:.5px}.brand span{color:var(--cyan)}.nav a{color:white;text-decoration:none;font-weight:700}
.visual-hero{position:relative;background:var(--navy);overflow:hidden}.visual-hero>img{display:block;width:100%;height:auto;aspect-ratio:2.4/1;object-fit:cover;object-position:center center}.hero-copy{background:linear-gradient(110deg,var(--navy) 0%,rgba(6,31,59,.96) 42%,rgba(6,31,59,.72) 70%,rgba(6,31,59,.38) 100%);color:white;padding:42px 0}.hero-copy h1{font-size:clamp(2.45rem,6vw,4.8rem);line-height:.98;margin:4px 0 18px;letter-spacing:-2px}.hero-copy p:not(.eyebrow){font-size:1.16rem;max-width:720px;color:#e9f6fb}.eyebrow{font-size:.78rem!important;font-weight:900;letter-spacing:2px;color:var(--cyan)!important;margin:0 0 8px}.eyebrow.dark{color:var(--blue)!important}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.btn{display:inline-block;background:linear-gradient(90deg,var(--blue),var(--cyan));color:white!important;text-decoration:none;font-weight:800;padding:13px 18px;border-radius:7px;border:0;cursor:pointer}.btn.secondary{background:white;color:var(--navy)!important}.muted{color:var(--muted)}.small{font-size:.92rem}main{padding:42px 0 70px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:25px;box-shadow:0 5px 22px rgba(6,31,59,.06)}.feature-grid .card{border-top:4px solid var(--blue)}h2{font-size:2rem;margin:0 0 12px}h3{margin-top:0}.book-section,.author-section{display:grid;grid-template-columns:minmax(220px,330px) 1fr;gap:42px;align-items:center;margin-top:36px}.book-cover img{display:block;width:100%;max-width:300px;margin:auto;border-radius:5px;box-shadow:0 15px 35px rgba(6,31,59,.22)}.author-section{grid-template-columns:280px 1fr}.author-photo{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:50%;border:6px solid #e9f6fb}.reader-cta{margin-top:36px;text-align:center;background:linear-gradient(135deg,var(--navy),var(--navy2));color:white}.reader-cta p{color:#e4eef4}.kit-placeholder{margin-top:36px;border:2px dashed #a8bed0;background:white;padding:25px;border-radius:10px}.notice{border-left:5px solid var(--cyan);background:#eefaff;padding:15px 18px;border-radius:6px;margin:20px 0}.access{max-width:620px;margin:25px auto}.field{width:100%;padding:13px;border:1px solid #aeb5bd;border-radius:7px;font-size:1rem;margin:7px 0 12px}.error{color:#a12b2b;min-height:24px}.reader-shell{display:none}.reader-shell.open{display:block}.instructions{white-space:pre-wrap;background:#071828;color:#f3f6f7;padding:22px;border-radius:10px;max-height:560px;overflow:auto;font:14px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}.copy-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:15px 0}.copy-status{font-weight:700;color:#315d3a}.qr{width:180px;height:180px;object-fit:contain;background:white;padding:8px;border-radius:8px}footer{background:var(--navy);color:#dce9f0;padding:28px 0}.footer-grid{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}code{background:#eaf0f5;padding:2px 5px;border-radius:4px}
@media(max-width:720px){.nav .wrap{padding:13px 0}.visual-hero>img{aspect-ratio:auto;height:auto;object-fit:contain;background:#d9e8f4}.hero-copy{padding:32px 0;background:var(--navy)}.hero-copy h1{letter-spacing:-1px}.book-section,.author-section{grid-template-columns:1fr;gap:25px}.book-cover img{max-width:240px}.author-photo{max-width:220px;margin:auto}.author-section{text-align:center}.feature-grid{grid-template-columns:1fr 1fr}.card{padding:21px}}
@media(max-width:430px){.wrap{width:min(94%,1120px)}.feature-grid{grid-template-columns:1fr}.visual-hero>img{width:100%;height:auto}.hero-copy h1{font-size:2.55rem}.hero-actions .btn{width:100%;text-align:center}}