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.reveal{opacity:0;transform:translateY(24px);transition:opacity .75s ease,transform .75s ease}.reveal.visible{opacity:1;transform:none}.reveal-delay{transition-delay:.18s}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none}.orbit{animation:none}*{transition-duration:.01ms!important}}
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/* Refined 3D book presentation */
.hero-art{perspective:1400px}
.book-3d{width:min(420px,85%);margin:auto;position:relative;z-index:2;transform-style:preserve-3d;transform:rotateY(-10deg) rotateX(1.5deg) rotateZ(1deg);transition:transform .65s cubic-bezier(.2,.75,.2,1),filter .65s;filter:drop-shadow(28px 34px 30px rgba(0,0,0,.42))}
.book-3d:before{content:"";position:absolute;z-index:-1;left:-12px;top:5px;width:15px;height:calc(100% - 8px);background:linear-gradient(90deg,#d2c9b9 0%,#faf5eb 48%,#bbb1a1 100%);transform-origin:right;transform:rotateY(-72deg);border-radius:3px 0 0 3px;box-shadow:inset -2px 0 3px rgba(0,0,0,.2)}
.book-3d:after{content:"";position:absolute;z-index:-1;left:5px;right:-7px;bottom:-11px;height:13px;background:repeating-linear-gradient(0deg,#d7cfc1 0,#d7cfc1 1px,#faf5eb 1px,#faf5eb 3px);transform-origin:top;transform:rotateX(-70deg);border-radius:0 0 4px 4px}
.book-pages{position:absolute;z-index:-1;right:-9px;top:7px;bottom:3px;width:12px;background:repeating-linear-gradient(90deg,#cfc6b7 0,#faf5eb 2px,#dcd3c5 3px);transform-origin:left;transform:rotateY(72deg);border-radius:0 3px 3px 0}
.book-3d .book-cover{width:100%;margin:0;transform:none;border-radius:2px 4px 4px 2px;box-shadow:inset 4px 0 8px rgba(6,36,61,.08)}
.hero-art:hover .book-3d{transform:rotateY(-3deg) rotateX(0) rotateZ(0) translateY(-7px);filter:drop-shadow(32px 40px 34px rgba(0,0,0,.48))}
.hero-art:hover .book-cover{transform:none}

/* Accordion content stays fully collapsed and gains readable spacing */
.discipline .title{line-height:1.08}
.discipline-content{min-height:0;overflow:hidden;margin-left:90px;max-width:760px}
.discipline-body .discipline-content p{margin:4px 0 14px;line-height:1.55}
.discipline-body .discipline-content strong{display:block;margin:0;color:var(--orange);font-size:12px;line-height:1.4;text-transform:uppercase;letter-spacing:.09em;padding:0 0 32px}

/* Author portrait */
.about-grid{grid-template-columns:.72fr 1.28fr}
.about-photo{position:relative;padding:0 0 24px 24px}
.about-photo:before{content:"";position:absolute;left:0;bottom:0;width:72%;height:76%;background:var(--orange)}
.about-photo:after{content:"30+ YEARS OF LEADERSHIP";position:absolute;z-index:2;right:-28px;bottom:38px;background:var(--navy);color:white;padding:12px 17px;font-size:10px;font-weight:800;letter-spacing:.13em}
.about-photo img{position:relative;z-index:1;width:100%;aspect-ratio:3/4;object-fit:cover;object-position:center 26%;filter:saturate(.86) contrast(1.03);box-shadow:0 24px 55px rgba(6,36,61,.18)}
.about-link{display:inline-flex;gap:10px;align-items:center;margin-top:8px;color:var(--navy);font-size:12px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;text-decoration:none;border-bottom:2px solid var(--orange);padding-bottom:5px}
.about-link:hover{color:var(--orange)}

@media(max-width:850px){.book-3d{width:70%}.about-photo{width:min(420px,88%);margin:20px auto}}
@media(max-width:540px){.discipline-content{margin-left:45px}.discipline-body .discipline-content p,.discipline-body .discipline-content strong{margin-left:0}.about-photo:after{right:-12px;bottom:20px}}

.ai-principle{margin:23px 0 0;color:#dbe5eb;font-family:var(--serif);font-size:15px;line-height:1.5}
.ai-principle span{color:#ff7440;font-family:var(--sans);font-size:11px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;margin-right:5px}
@media(max-width:540px){.hero-actions .button{width:100%;line-height:1.35;text-align:center}.ai-principle{font-size:14px}}

.book-marker{position:absolute;z-index:4;right:-18px;top:18%;display:grid;place-items:center;width:92px;height:92px;border:2px solid var(--orange);border-radius:50%;background:var(--orange);color:#fff;font-size:10px;font-weight:800;letter-spacing:.1em;text-align:center;text-transform:uppercase;transform:rotate(11deg);box-shadow:0 10px 24px rgba(0,0,0,.24)}
.book-bridge{position:relative;z-index:4;width:min(420px,85%);margin:27px auto 0;padding-left:15px;border-left:2px solid rgba(238,79,20,.72);color:#c3d0d8;font-family:var(--serif);font-size:17px;line-height:1.35}
@media(max-width:850px){.book-marker{right:-13px}}
@media(max-width:540px){.book-marker{right:-18px;width:78px;height:78px;font-size:9px}.book-bridge{width:70%;margin-top:23px;font-size:15px}}
.hero-art .note-one{top:45%}