.bd-wrap{width:calc(100% - 64px);max-width:1280px;margin:0 auto;box-sizing:border-box}
.fm-nav .is-active{color:#0867c9;font-weight:700}
.bd-breadcrumb{background:#f5f8fa;border-bottom:1px solid #e0e8ee;padding:13px 0}
.bd-breadcrumb .bd-wrap{display:flex;gap:8px;align-items:center;color:#778b9a;font-size:11px;white-space:nowrap;overflow:hidden}
.bd-breadcrumb a{color:#507088;text-decoration:none}.bd-breadcrumb strong{color:#345369;overflow:hidden;text-overflow:ellipsis}
.bd-hero{background:#dfeefa;padding:54px 0}.bd-book-grid{display:grid;grid-template-columns:245px minmax(0,1fr) 315px;gap:52px;align-items:start}
.bd-cover{background:#eaf1f5;padding:18px;min-height:310px;display:flex;align-items:center;justify-content:center}.bd-cover img{width:100%;max-height:330px;object-fit:contain;box-shadow:0 8px 22px rgba(5,45,82,.16)}
.bd-cover-fallback{width:100%;aspect-ratio:3/4;background:#07335b;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.bd-cover-fallback>span{display:grid;place-items:center;width:48px;height:48px;border:1px solid #8ec8f2;border-radius:50%;font-weight:800;margin-bottom:15px}.bd-cover-fallback strong{font-size:13px;letter-spacing:.08em}.bd-cover-fallback small{margin-top:14px;color:#bcd5e8}
.bd-series{display:block;margin-top:12px;border:1px solid #cadce7;background:#fff;padding:15px;text-decoration:none}.bd-series span,.bd-kicker,.bd-card-kicker{display:block;color:#0874c9;font-size:9.5px;font-weight:800;letter-spacing:.13em;margin-bottom:7px}.bd-series strong{color:#07335b;font-size:12px}
.bd-badges{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:15px}.bd-badges span{padding:5px 8px;background:#edf4f8;color:#315b76;font-size:9px;font-weight:800;letter-spacing:.08em}.bd-badges .oa{background:#e7f6ef;color:#13795d}.bd-badges .commercial{background:#f1edf9;color:#5b4497}
.bd-book-info h1,.bd-chapter-hero h1{color:#07335b;font-size:39px;line-height:1.08;letter-spacing:-.025em;margin:0 0 10px}.bd-subtitle{font-size:18px;color:#536f83;line-height:1.5;margin:0 0 25px}
.bd-people{margin:19px 0}.bd-people>span{display:block;color:#6d8495;font-size:9px;font-weight:800;letter-spacing:.12em;margin-bottom:6px}.bd-people div{margin:6px 0;color:#21445d;font-size:13px}.bd-people a{font-size:10px;color:#0874c9;text-decoration:none;margin-left:8px}
.bd-meta-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}.bd-meta-grid div{background:rgba(255,255,255,.72);border:1px solid #cadde9;padding:11px 13px;min-width:105px}.bd-meta-grid small{display:block;color:#6a8294;font-size:8.5px;text-transform:uppercase;letter-spacing:.08em}.bd-meta-grid strong{display:block;color:#173e5a;font-size:11.5px;margin-top:3px;overflow-wrap:anywhere}
.bd-access-card{background:#07335b;color:#fff;padding:27px}.bd-card-kicker{color:#93cdf2}.bd-access-label{font-size:23px;font-weight:800;margin:13px 0}.bd-access-label.oa,.oa-text{color:#54d0a8}.bd-price{font-size:34px;font-weight:800;margin:14px 0}.bd-price small{font-size:13px}.bd-access-card p{font-size:12.5px;line-height:1.58;color:#d7e5ef}.bd-primary,.bd-secondary,.bd-save{display:block;width:100%;box-sizing:border-box;text-align:center;text-decoration:none;padding:12px 13px;font-size:11.5px;font-weight:800;margin-top:9px;cursor:pointer}.bd-primary{border:0;background:#fff;color:#07335b}.bd-secondary,.bd-save{background:transparent;border:1px solid #6d94b0;color:#fff}
.bd-tabs{background:#fff;border-bottom:1px solid #dbe5ec;box-shadow:0 2px 7px rgba(5,40,70,.04)}.bd-tabs .bd-wrap{display:flex;gap:28px}.bd-tabs a{padding:16px 0;color:#365b74;font-size:12px;font-weight:700;text-decoration:none;border-bottom:2px solid transparent}.bd-tabs a:hover{border-color:#0874c9;color:#0874c9}
.bd-main{padding:60px 0 72px;background:#fff}.bd-content-grid{display:grid;grid-template-columns:minmax(0,1fr) 325px;gap:70px;align-items:start}.bd-section{margin-bottom:54px;scroll-margin-top:30px}.bd-section h2{font-size:28px;color:#07335b;margin:0 0 17px}.bd-abstract{color:#405f74;font-size:15px;line-height:1.78}.bd-abstract p{margin-top:0}.bd-keywords{background:#f5f8fa;border-left:3px solid #0874c9;padding:15px 18px;margin-top:25px}.bd-keywords strong{font-size:11px;color:#07335b}.bd-keywords p{margin:5px 0 0;color:#60788c;font-size:13px}.bd-subjects{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.bd-subjects a{border:1px solid #d6e4ec;padding:6px 9px;color:#42657d;text-decoration:none;font-size:10px}
.bd-chapters{border-top:1px solid #dce6ed}.bd-chapter-row{display:grid;grid-template-columns:44px minmax(0,1fr) 130px;gap:18px;padding:22px 0;border-bottom:1px solid #dce6ed;align-items:start}.bd-chapter-number{display:grid;place-items:center;width:36px;height:36px;background:#edf4f8;color:#0874c9;font-size:11px;font-weight:800}.bd-chapter-copy h3{margin:5px 0;font-size:17px}.bd-chapter-copy h3 a{color:#07335b;text-decoration:none}.bd-chapter-copy p{margin:5px 0;color:#60788c;font-size:12px}.bd-chapter-meta{display:flex;gap:12px;color:#778c9b;font-size:9.5px}.bd-chapter-action{text-align:right;font-size:11px}.bd-chapter-action strong{display:block;color:#07335b;margin:5px 0 11px}.bd-chapter-action a{color:#0874c9;text-decoration:none;font-weight:800}
.bd-format-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.bd-format-grid div{border:1px solid #d7e4ec;background:#f8fafb;padding:20px}.bd-format-grid strong{display:block;color:#07335b;font-size:16px}.bd-format-grid span{display:block;color:#6d8393;font-size:10px;margin-top:5px}
.bd-info-column{display:grid;gap:18px;position:sticky;top:22px}.bd-info-card{border:1px solid #d8e4ec;padding:23px}.bd-info-card h3{font-size:19px;color:#07335b;margin:0 0 14px}.bd-info-card p{font-size:12.5px;line-height:1.6;color:#5b7386}.bd-info-card dl{margin:0}.bd-info-card dl div{padding:10px 0;border-bottom:1px solid #edf2f5}.bd-info-card dt{font-size:9px;color:#738897;text-transform:uppercase;letter-spacing:.07em}.bd-info-card dd{margin:3px 0 0;color:#294c64;font-size:11.5px;overflow-wrap:anywhere}.bd-info-card>a,.bd-citation-links a{display:block;color:#0874c9;text-decoration:none;font-size:11px;font-weight:700;padding-top:9px}.bd-citation-links{display:flex;gap:7px}.bd-citation-links a{border:1px solid #cddde7;padding:7px 9px}
.bd-muted{color:#667e90;font-size:13px;line-height:1.6}.bd-inline-button{display:inline-block;background:#07335b;color:#fff;text-decoration:none;padding:10px 14px;font-size:11px;font-weight:800;margin-top:10px}
.bd-bottom{padding:48px 0;background:#dfeefa}.bd-bottom-inner{display:flex;justify-content:space-between;align-items:center;gap:40px}.bd-bottom h2{font-size:26px;color:#07335b;margin:0 0 6px}.bd-bottom p{color:#5b7487;margin:0;font-size:13px}.bd-bottom-inner>a{background:#07335b;color:#fff;text-decoration:none;padding:12px 17px;font-size:11.5px;font-weight:800;flex:0 0 auto}
.bd-chapter-hero{background:#dfeefa;padding:58px 0}.bd-chapter-grid{display:grid;grid-template-columns:minmax(0,1fr) 315px;gap:80px}.bd-in-book{color:#557186;font-size:14px;margin:12px 0 26px}.bd-in-book a{color:#0874c9;text-decoration:none;font-weight:700}.bd-chapter-authors{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:22px 0}.bd-chapter-authors div{background:rgba(255,255,255,.64);border:1px solid #cadde9;padding:12px}.bd-chapter-authors strong{display:block;color:#173e5a;font-size:12px}.bd-chapter-authors span,.bd-chapter-authors a{display:block;color:#617b8e;font-size:9.5px;margin-top:4px;text-decoration:none}.bd-preview-text{font-size:14px;line-height:1.75;color:#405f74;background:#f8fafb;border-left:3px solid #0874c9;padding:20px 22px}
@media(max-width:1050px){.bd-book-grid{grid-template-columns:190px 1fr 275px;gap:30px}.bd-content-grid{grid-template-columns:1fr 280px;gap:40px}.bd-book-info h1,.bd-chapter-hero h1{font-size:33px}}
@media(max-width:760px){.bd-wrap{width:calc(100% - 28px)}.bd-book-grid,.bd-chapter-grid,.bd-content-grid{grid-template-columns:1fr}.bd-cover{max-width:250px;margin:auto}.bd-info-column{position:static}.bd-tabs .bd-wrap{overflow-x:auto}.bd-chapter-row{grid-template-columns:36px 1fr}.bd-chapter-action{grid-column:2;text-align:left}.bd-format-grid,.bd-chapter-authors{grid-template-columns:1fr}.bd-bottom-inner{display:block}.bd-bottom-inner>a{display:inline-block;margin-top:20px}}