:root {
	--rsn-abstract-navy: #0c3268;
	--rsn-abstract-blue: #2363aa;
	--rsn-abstract-ink: #12203a;
	--rsn-abstract-muted: #6b7890;
	--rsn-abstract-line: #dce5f0;
	--rsn-abstract-soft: #f4f7fb;
}

.rsn-abstract-book, .rsn-abstract-book * { box-sizing: border-box; }
.rsn-abstract-book { width: 100%; max-width: 1120px; margin: 0 auto; font-family: inherit; color: var(--rsn-abstract-ink); }
.rsn-abstract-book__card { display: grid; grid-template-columns: minmax(220px, 32%) 1fr; overflow: hidden; min-height: 480px; border: 1px solid var(--rsn-abstract-line); border-radius: 24px; background: #fff; box-shadow: 0 20px 55px rgba(12,50,104,.14); }
.rsn-abstract-book__cover { position: relative; min-height: 480px; padding: 28px; background: linear-gradient(145deg, #08264f, #164e83 70%, #2869aa); }
.rsn-abstract-book__cover::after { position: absolute; inset: 0; background: radial-gradient(circle at 90% 5%, rgba(255,255,255,.17), transparent 32%); content: ""; pointer-events: none; }
.rsn-abstract-book__cover img { position: relative; z-index: 1; display: block; width: 100%; height: 100%; max-height: 430px; border-radius: 8px; box-shadow: 0 18px 35px rgba(0,0,0,.28); object-fit: cover; object-position: top center; }
.rsn-abstract-book__content { display: flex; flex-direction: column; justify-content: center; padding: clamp(36px, 6vw, 76px); }
.rsn-abstract-book__eyebrow { margin: 0 0 13px; color: var(--rsn-abstract-blue); font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.rsn-abstract-book__content h2 { margin: 0 0 20px; color: var(--rsn-abstract-ink); font-size: clamp(35px, 4.5vw, 58px); line-height: 1.04; }
.rsn-abstract-book__description { max-width: 620px; margin: 0 0 20px; color: var(--rsn-abstract-muted); font-size: 18px; line-height: 1.65; }
.rsn-abstract-book__meta { margin: 0 0 30px; color: var(--rsn-abstract-navy); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.rsn-abstract-book__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.rsn-abstract-book__button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 52px; padding: 13px 22px; border: 1px solid var(--rsn-abstract-navy); border-radius: 12px; font: inherit; font-size: 15px; font-weight: 800; line-height: 1.2; text-decoration: none !important; cursor: pointer; transition: background .2s ease, color .2s ease, box-shadow .2s ease; }
.rsn-abstract-book__button--primary, .rsn-abstract-book__button--primary:hover, .rsn-abstract-book__button--primary:focus { background: linear-gradient(135deg, var(--rsn-abstract-navy), var(--rsn-abstract-blue)); color: #fff !important; }
.rsn-abstract-book__button--secondary { background: #fff; color: var(--rsn-abstract-navy) !important; }
.rsn-abstract-book__button:hover, .rsn-abstract-book__button:focus-visible { box-shadow: 0 10px 24px rgba(12,50,104,.18); }

.rsn-abstract-reader[hidden] { display: none; }
.rsn-abstract-reader { position: fixed; z-index: 999999; inset: 0; display: grid; place-items: center; padding: 24px; }
.rsn-abstract-reader__backdrop { position: absolute; inset: 0; background: rgba(4,15,33,.82); backdrop-filter: blur(5px); }
.rsn-abstract-reader__dialog { position: relative; display: flex; flex-direction: column; overflow: hidden; width: min(1240px, 96vw); height: min(92vh, 960px); border: 1px solid rgba(255,255,255,.16); border-radius: 18px; background: #fff; box-shadow: 0 30px 90px rgba(0,0,0,.42); }
.rsn-abstract-reader__header { display: flex; flex: 0 0 auto; align-items: center; justify-content: space-between; gap: 20px; min-height: 76px; padding: 14px 20px; background: linear-gradient(135deg, var(--rsn-abstract-navy), var(--rsn-abstract-blue)); color: #fff; }
.rsn-abstract-reader__header span { display: block; margin-bottom: 2px; font-size: 10px; font-weight: 800; letter-spacing: .14em; opacity: .75; text-transform: uppercase; }
.rsn-abstract-reader__header h2 { margin: 0; color: #fff; font-size: 21px; line-height: 1.2; }
.rsn-abstract-reader__tools { display: flex; align-items: center; gap: 14px; }
.rsn-abstract-reader__tools a { color: #fff !important; font-size: 13px; font-weight: 700; text-decoration: none; }
.rsn-abstract-reader__tools button { width: 42px; height: 42px; padding: 0; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; background: rgba(255,255,255,.1); color: #fff; font-size: 30px; line-height: 1; cursor: pointer; }
.rsn-abstract-reader__frame-wrap { flex: 1 1 auto; min-height: 0; background: #e7edf5; }
.rsn-abstract-reader iframe { display: block; width: 100%; height: 100%; border: 0; background: #fff; }
body.rsn-abstract-reader-open { overflow: hidden; }

@media (max-width: 767px) {
	.rsn-abstract-book { position: relative; left: 50%; width: calc(100vw - 24px); margin-left: 0; transform: translateX(-50%); }
	.rsn-abstract-book__card { grid-template-columns: 1fr; border-radius: 18px; }
	.rsn-abstract-book__cover { min-height: 0; padding: 26px 56px; }
	.rsn-abstract-book__cover img { max-height: none; }
	.rsn-abstract-book__content { padding: 32px 24px 36px; }
	.rsn-abstract-book__content h2 { font-size: 36px; }
	.rsn-abstract-book__description { font-size: 16px; }
	.rsn-abstract-book__actions { flex-direction: column; }
	.rsn-abstract-book__button { width: 100%; }
	.rsn-abstract-reader { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
	.rsn-abstract-book__button { transition: none; }
}