:root{color-scheme:dark;--bg:#080d19;--panel:#111b2c;--line:#294059;--ink:#f0f6ff;--soft:#acbdd0;--mint:#b8ff88;--gold:#e5c47d}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 84% 0,#1a3948 0,#090e1b 46%);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.65}a{color:var(--mint)}a:focus-visible,button:focus-visible{outline:3px solid var(--mint);outline-offset:4px}.wrap{width:min(1110px,calc(100% - 36px));margin:0 auto}.top{border-bottom:1px solid #24364b;background:#0b1425e6}.top-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 0;flex-wrap:wrap}.identity{display:flex;align-items:center;gap:10px;text-decoration:none;color:white;font-weight:850;letter-spacing:.03em}.identity-mark{background:var(--mint);color:#10201d;border-radius:9px;padding:7px 10px;font-size:16px}.top nav{display:flex;gap:24px;flex-wrap:wrap}.top nav a{font-size:13px;text-decoration:none;color:#cad8e6}.top nav a:hover{color:var(--mint)}main{padding:58px 0 75px}.eyebrow{color:var(--mint);font-weight:800;letter-spacing:.14em;text-transform:uppercase;font-size:11px}.hero{display:grid;grid-template-columns:minmax(230px,350px) minmax(0,1fr);gap:min(7vw,76px);align-items:center}.cover{aspect-ratio:3/4;min-height:390px;max-width:380px;position:relative;overflow:hidden;border:1px solid #73978c;border-radius:12px;background:radial-gradient(circle at 78% 40%,#255f74 0,transparent 42%),linear-gradient(135deg,#102038,#071627 58%,#142943);box-shadow:18px 24px 46px #0008;padding:30px;display:flex;flex-direction:column;justify-content:space-between}.cover::before,.cover::after{content:'';position:absolute;border-radius:50%;border:2px solid #b8ff8870}.cover::before{width:210px;height:210px;right:-72px;top:118px;box-shadow:0 0 0 18px #b8ff880c,0 0 0 46px #b8ff8809}.cover::after{width:100px;height:100px;right:82px;top:206px;border-color:#e5c47d80}.cover .publisher{position:relative;z-index:1;font-size:11px;letter-spacing:.15em;color:#d7f8dc;font-weight:800}.cover h2{position:relative;z-index:1;font-size:clamp(29px,4vw,45px);letter-spacing:-.04em;line-height:1.06;margin:20px 0}.cover p{position:relative;z-index:1;color:#c5daeb;font-size:13px}.cover .author{position:relative;z-index:1;font-weight:800;color:#e6d6af;font-size:13px}.hero h1{font-size:clamp(34px,5vw,60px);letter-spacing:-.05em;line-height:1.07;margin:10px 0 18px}.lede{color:#bacadd;font-size:17px;line-height:1.75}.facts{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.pill{border:1px solid #3c556a;color:#d4e8f4;border-radius:30px;padding:6px 12px;font-size:12px}.actions{display:flex;align-items:center;gap:13px;flex-wrap:wrap;margin:27px 0}.btn{display:inline-block;border-radius:10px;padding:13px 20px;background:var(--mint);color:#132018;font-weight:800;text-decoration:none;border:1px solid var(--mint)}.btn.alt{color:var(--mint);background:transparent;border-color:#54735c}.btn.disabled{background:#303d49;color:#a9bacd;border-color:#526172;cursor:not-allowed}.fine{font-size:12px;color:#9eb0c7}.section{margin-top:58px}.section h2{font-size:clamp(23px,3vw,33px);letter-spacing:-.025em;margin-bottom:14px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-top:18px}.card{background:#101b2dd9;border:1px solid var(--line);padding:22px;border-radius:15px}.card h3{margin:0 0 10px;font-size:16px}.card p{margin:0;color:#b6c6d9;font-size:13px}.chapter-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.chapter-grid div{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:15px 18px}.chapter-grid strong{display:block;color:var(--mint);font-size:12px;letter-spacing:.08em;margin-bottom:5px}.chapter-grid span{font-size:14px;color:#d5e0ee}.book-card{display:grid;grid-template-columns:150px 1fr;gap:25px;background:var(--panel);padding:23px;border-radius:18px;border:1px solid var(--line);max-width:840px}.book-card .cover{min-height:210px;border-radius:8px;padding:15px}.book-card .cover h2{font-size:21px}.book-card .cover p{font-size:9px}.book-card .cover .publisher,.book-card .cover .author{font-size:7px}.book-card h2{font-size:26px;line-height:1.15;margin:5px 0}.book-card p{font-size:14px;color:#bdc9da}.sample{background:#111d31;border:1px solid var(--line);border-radius:15px;padding:min(5vw,40px);max-width:900px}.sample p{max-width:75ch}.sample blockquote{padding-left:20px;border-left:3px solid var(--mint);margin-left:0;color:#dce9f8}.copyright{border-top:1px solid #24364b;color:#93a5bb;font-size:12px;padding:23px 0 35px}.copyright a{color:#b8cfdd}.back{display:inline-block;margin-bottom:30px;text-decoration:none;font-size:13px}.notice{border:1px solid #587559;background:#152b25;padding:13px 16px;border-radius:9px;color:#cce5d3;font-size:13px}@media(max-width:720px){.hero{grid-template-columns:1fr}.hero .cover{width:min(80%,300px);margin:auto;min-height:345px}.cards,.chapter-grid{grid-template-columns:1fr}.book-card{grid-template-columns:1fr}.book-card .cover{width:180px}.top-inner{align-items:flex-start}main{padding-top:30px}.hero h1{font-size:36px}}