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.faq-a-inner{padding-bottom:26px}.engines{grid-template-columns:repeat(5,1fr);gap:0;display:grid;position:relative}.engine{text-align:center;padding:0 14px;position:relative}.engine .e-line{background:var(--line-2);z-index:0;width:100%;height:2px;position:absolute;top:33px;left:50%}.engine:last-child .e-line{display:none}.engine .e-node{z-index:1;background:var(--surface);border:1px solid var(--line-2);width:68px;height:68px;color:var(--accent);box-shadow:var(--sh-sm);border-radius:20px;place-items:center;margin:0 auto 18px;transition:transform .2s,box-shadow .2s;display:grid;position:relative}.engine .e-node svg{width:28px;height:28px}.engine .e-num{background:var(--accent);color:#fff;width:24px;height:24px;font-size:12.5px;font-weight:700;font-family:var(--body);box-shadow:0 2px 6px -1px var(--accent);border-radius:50%;place-items:center;display:grid;position:absolute;top:-9px;right:50%;transform:translate(34px)}@supports (color:color-mix(in lab, red, red)){.engine .e-num{box-shadow:0 2px 6px -1px color-mix(in srgb, var(--accent) 50%, transparent)}}.engine:hover .e-node{box-shadow:var(--sh);transform:translateY(-3px)}.engine h4{letter-spacing:-.01em;margin-bottom:6px;font-size:18px}.engine p{color:var(--ink-2);margin:0;font-size:14px;line-height:1.45}.book{perspective:1600px;width:300px;position:relative}.book-cover{aspect-ratio:5/7;box-shadow:var(--sh-lg);transform-style:preserve-3d;background:linear-gradient(135deg,#1d2633 0%,#10151d 100%);border-radius:4px 8px 8px 4px;transition:transform .4s cubic-bezier(.2,.7,.3,1);position:relative;overflow:hidden;transform:rotateY(-16deg)rotateX(2deg)}.book:hover .book-cover{transform:rotateY(-9deg)rotateX(1deg)}.book-cover:before{content:"";background:linear-gradient(90deg,#ffffff29,#fff0);width:14px;position:absolute;top:0;bottom:0;left:0}.book-cover:after{content:"";background:#00000059;width:2px;position:absolute;top:0;bottom:0;left:14px}.book-inner{color:#fff;flex-direction:column;padding:34px 30px 30px 40px;display:flex;position:absolute;inset:0}.book-pub{letter-spacing:.16em;text-transform:uppercase;color:#ffffff8c;font-size:12px;font-weight:600}.book-play{background:var(--accent);border-radius:13px;place-items:center;width:44px;height:44px;margin:22px 0 auto;display:grid;box-shadow:0 6px 18px -4px #1f6febb3}.book-play svg{width:20px;height:20px;margin-left:2px}.book-title{font-family:var(--display);letter-spacing:-.02em;font-size:31px;font-weight:700;line-height:1.04}.book-sub{color:#ffffff9e;margin-top:12px;font-size:14px;font-weight:450;line-height:1.45}.book-rule{background:var(--accent);border-radius:2px;width:42px;height:2px;margin:18px 0}.crumb{color:var(--ink-3);flex-wrap:wrap;align-items:center;gap:9px;font-size:14px;font-weight:500;display:flex}.crumb a:hover{color:var(--accent-ink)}.crumb .sep{color:var(--line-2)}.crumb .cur{color:var(--ink-2)}.tag{border-radius:var(--pill);background:var(--surface);border:1px solid var(--line-2);height:30px;color:var(--ink-2);align-items:center;padding:0 14px;font-size:13px;font-weight:600;transition:all .15s;display:inline-flex}.tag.active,.tag:hover{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent-ink)}.prose{max-width:var(--maxw-prose);color:#272d35;font-size:19px;line-height:1.72}.prose>*+*{margin-top:24px}.prose h2{letter-spacing:-.025em;margin-top:54px;margin-bottom:-2px;font-size:30px}.prose h3{letter-spacing:-.02em;margin-top:38px;font-size:22px}.prose p{margin:0}.prose a{color:var(--accent-ink);text-underline-offset:3px;text-decoration:underline;-webkit-text-decoration-color:var(--accent-line);-webkit-text-decoration-color:var(--accent-line);-webkit-text-decoration-color:var(--accent-line);text-decoration-color:var(--accent-line)}.prose a:hover{-webkit-text-decoration-color:var(--accent);-webkit-text-decoration-color:var(--accent);-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent)}.prose 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