.cover-book{aspect-ratio:auto;width:100%;max-width:none;height:100svh;color:inherit;cursor:pointer;isolation:isolate;box-shadow:none;z-index:1;transform-origin:0;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:0;outline:none;grid-area:1/1;text-decoration:none;transition:transform .95s cubic-bezier(.65,.05,.36,1);display:block;position:relative;overflow:hidden;transform:translateZ(0)}.cover-interior{z-index:0;pointer-events:none;background:var(--book-cream);border-radius:0;grid-area:1/1;width:100%;height:100svh;overflow:hidden}.cover-interior .toc-page,.cover-interior .book-page{aspect-ratio:auto;width:100%;height:100%;min-height:0;max-height:100%;box-shadow:none;border-radius:inherit;padding:40px 30px max(40px, env(safe-area-inset-bottom));border:0;grid-template-rows:minmax(0,1fr) auto;display:grid;overflow:hidden}.cover-interior .flip-embed,.cover-interior .flip-book{width:100%;height:100%;min-height:0;max-height:100%}.cover-book:focus-visible{outline:2px solid var(--gold-light);outline-offset:4px}@media (width>=768px){.cover-book,.cover-interior{width:var(--book-width);height:auto;aspect-ratio:var(--book-ratio);max-height:min(var(--book-max-height), calc(100dvh - 3rem));border-radius:var(--book-radius)}.cover-book{overflow:hidden;box-shadow:inset 0 1px #ffffff0d,0 2px 4px #0006,0 16px 40px #00000073}.cover-interior{box-shadow:0 1px 0 #ffffff0a inset, 0 0 0 1px color-mix(in srgb, var(--paper-edge) 55%, transparent), 0 2px 4px #0006, 0 16px 40px #00000073}}.cover-stage.is-opening{perspective:1600px}.cover-stage.is-opening .cover-book{pointer-events:none;transform:rotateY(-108deg);box-shadow:-8px 12px 40px #00000073,0 10px 22px #00000040}.cover-stage.is-open{perspective:none}.cover-stage.is-open .cover-book{display:none}.cover-stage.is-open .cover-interior{pointer-events:auto;overflow:visible}.cover-stage.is-closing{perspective:1600px}.cover-stage.is-closing .cover-interior{pointer-events:none}.cover-stage.is-closing .cover-book{pointer-events:none;transform:rotateY(-108deg);box-shadow:-8px 12px 40px #00000073,0 10px 22px #00000040;display:block!important}.cover-stage.is-closing .cover-book.is-shutting{transform:rotateY(0);box-shadow:inset 0 1px #ffffff0d,0 2px 4px #0006,0 16px 40px #00000073}@media (prefers-reduced-motion:reduce){.cover-book{transition:none}}.cover-face{border-radius:inherit;z-index:2;background:linear-gradient(145deg, color-mix(in srgb, var(--navy) 88%, #2a4a6e) 0%, var(--navy) 38%, var(--navy-deep) 100%);position:absolute;inset:0;overflow:hidden}.cover-face:before{content:"";pointer-events:none;z-index:1;background:linear-gradient(125deg,#0000 0% 38%,#ffffff12 48%,#0000 58% 100%);position:absolute;inset:0}.cover-face:after{content:"";pointer-events:none;z-index:2;background:radial-gradient(70% 60% at 50% 45%,#0000 40%,#00000073 100%);position:absolute;inset:0}.cover-grain{opacity:.32;mix-blend-mode:overlay;pointer-events:none;z-index:3;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");position:absolute;inset:0}.cover-frame{z-index:5;pointer-events:none;border:1.5px solid #0000;border-image:linear-gradient(160deg, var(--gold-light), var(--gold) 45%, var(--gold-deep) 100%) 1;opacity:.95;position:absolute;inset:clamp(.85rem,3.2vw,1.35rem)}.cover-frame-inner{border:.75px solid color-mix(in srgb, var(--gold) 55%, transparent);position:absolute;inset:6px}.cover-corner{z-index:6;width:22px;height:22px;color:var(--gold-light);position:absolute}.cover-corner svg{width:100%;height:100%;display:block;overflow:visible}.cover-corner--tl{top:clamp(.85rem,3.2vw,1.35rem);left:clamp(.85rem,3.2vw,1.35rem);transform:translate(-35%,-35%)}.cover-corner--tr{top:clamp(.85rem,3.2vw,1.35rem);right:clamp(.85rem,3.2vw,1.35rem);transform:translate(35%,-35%)scaleX(-1)}.cover-corner--bl{bottom:clamp(.85rem,3.2vw,1.35rem);left:clamp(.85rem,3.2vw,1.35rem);transform:translate(-35%,35%)scaleY(-1)}.cover-corner--br{bottom:clamp(.85rem,3.2vw,1.35rem);right:clamp(.85rem,3.2vw,1.35rem);transform:translate(35%,35%)scale(-1)}.cover-content{z-index:7;text-align:center;color:var(--cream);flex-direction:column;align-items:center;display:flex;position:absolute;inset:clamp(2.25rem,8vw,3.5rem) clamp(1.75rem,6vw,2.75rem)}.cover-crest{flex-shrink:0;width:clamp(4rem,12vw,5rem);height:clamp(4rem,12vw,5rem);margin-top:clamp(.15rem,1.2vh,.55rem)}.cover-crest-img{object-fit:contain;filter:drop-shadow(0 2px 4px #0006);width:100%;height:100%;display:block}.cover-title{font-family:var(--font-display);letter-spacing:.18em;text-transform:uppercase;background:linear-gradient(185deg, #f0d78a 0%, var(--gold-light) 28%, var(--gold) 55%, var(--gold-deep) 100%);color:#0000;filter:drop-shadow(0 1px #0006);-webkit-background-clip:text;background-clip:text;margin:clamp(1.6rem,4.5vh,2.4rem) 0 0;font-size:clamp(1.55rem,6.2vw,2.35rem);font-weight:500;line-height:1.12}@supports not ((-webkit-background-clip:text) or (background-clip:text)){.cover-title{color:var(--gold-light)}}.cover-rule{background:linear-gradient(90deg, transparent 0%, var(--gold-light) 20%, var(--gold) 50%, var(--gold-light) 80%, transparent 100%);width:clamp(4rem,22vw,6rem);height:1px;box-shadow:0 0 6px color-mix(in srgb, var(--gold) 35%, transparent);border:0;margin:clamp(.95rem,2.2vh,1.25rem) 0}.cover-subtitle{font-family:var(--font-display);letter-spacing:.22em;text-transform:uppercase;color:var(--gold);max-width:100%;margin:0;padding:0 .25rem;font-size:clamp(.58rem,2vw,.72rem);font-weight:400}.cover-tagline{font-family:var(--font-body);color:color-mix(in srgb, var(--cream) 92%, white);max-width:16rem;margin:auto 0;padding:1.25rem 0;font-size:clamp(1.15rem,3.6vw,1.4rem);font-style:italic;line-height:1.45}.cover-cta{font-family:var(--font-display);letter-spacing:.28em;text-transform:uppercase;color:var(--gold-light);flex-direction:column;align-items:center;gap:.45rem;margin-top:auto;margin-bottom:clamp(.15rem,1vh,.5rem);font-size:clamp(.62rem,2vw,.72rem);display:flex}.cover-cta-chevron{opacity:.85;width:14px;height:8px;animation:2.4s ease-in-out infinite cover-pulse}@keyframes cover-pulse{0%,to{opacity:.55;transform:translateY(0)}50%{opacity:1;transform:translateY(3px)}}@media (prefers-reduced-motion:reduce){.cover-cta-chevron{opacity:.85;animation:none}}