:root{--by-ink:#172033;--by-muted:#667085;--by-line:#e4e8ef;--by-paper:#fff;--by-canvas:#f5f7fa;--by-navy:#081a35;--by-navy-2:#10294d;--by-gold:#b8872e;--by-gold-dark:#805910;--by-focus:#1769aa;--by-radius:12px;--by-shadow:0 14px 36px rgba(8,26,53,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--by-canvas);color:var(--by-ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
::selection{background:#d9bd82;color:#081a35}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}
a:focus-visible,button:focus-visible{outline:3px solid var(--by-focus);outline-offset:3px}
img{max-width:100%;height:auto;display:block}
.by-skip-link{position:fixed;left:16px;top:12px;z-index:100;transform:translateY(-160%);padding:10px 14px;border-radius:8px;background:#fff;color:#081a35;box-shadow:var(--by-shadow)}
.by-skip-link:focus{transform:none}
.by-seo-header{position:sticky;top:0;z-index:20;background:rgba(8,26,53,.97);color:#fff;box-shadow:0 8px 24px rgba(8,26,53,.16)}
.by-seo-header-inner{width:min(1240px,calc(100% - 40px));min-height:72px;margin:auto;display:flex;align-items:center;gap:32px}
.by-seo-brand{display:flex;align-items:center;gap:12px;text-decoration:none;white-space:nowrap}
.by-seo-brand-mark{display:grid;place-items:center;width:40px;height:40px;border:1px solid #caa553;border-radius:10px;color:#f4d997;font:700 21px/1 Georgia,serif}
.by-seo-brand strong{display:block;color:#f3d58e;font-size:20px;letter-spacing:.05em}.by-seo-brand small{display:block;color:#bdc8d8;font-size:10px;letter-spacing:.18em}
.by-seo-nav{display:flex;align-items:stretch;gap:8px;margin-left:auto;height:72px}.by-seo-nav a{position:relative;display:flex;align-items:center;padding:0 14px;color:#dce4ef;text-decoration:none;font-size:15px}.by-seo-nav a:hover{color:#fff}.by-seo-nav a.is-current{color:#f4d997}.by-seo-nav a.is-current:after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:#caa553}
.by-seo-live-link,.by-primary-link,.by-secondary-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:9px;text-decoration:none;font-weight:700}.by-seo-live-link{gap:8px;background:#b8872e;color:#fff}.by-seo-live-link i{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.18)}
.by-seo-main{width:min(1240px,calc(100% - 40px));margin:0 auto;padding:42px 0 72px}
.by-seo-hero{min-height:360px;padding:56px 64px;display:grid;grid-template-columns:minmax(0,1.6fr) minmax(270px,.65fr);gap:68px;align-items:center;background:linear-gradient(125deg,#081a35 0%,#10294d 72%,#18365e 100%);color:#fff;border-radius:18px;box-shadow:0 18px 44px rgba(8,26,53,.17)}
.by-seo-hero h1,.by-page-head h1,.by-article-page h1{margin:0;letter-spacing:-.03em;line-height:1.18}.by-seo-hero h1{max-width:720px;font-size:clamp(36px,4vw,56px)}.by-seo-hero p{max-width:65ch;margin:22px 0 0;color:#d4deea;font-size:18px}.by-hero-actions{display:flex;gap:12px;margin-top:32px}.by-primary-link{background:#c39745;color:#fff}.by-primary-link:hover{background:#ad7e2b}.by-secondary-link{border:1px solid #c9d3e0;color:inherit;background:transparent}.by-secondary-link:hover{background:rgba(255,255,255,.08)}
.by-seo-hero dl{margin:0;padding-left:34px;border-left:1px solid rgba(255,255,255,.2)}.by-seo-hero dl div+div{margin-top:22px}.by-seo-hero dt{color:#aebed1;font-size:13px}.by-seo-hero dd{margin:2px 0 0;font-size:20px;font-weight:700;font-variant-numeric:tabular-nums}
.by-category-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.by-category-links a{padding:9px 15px;border:1px solid var(--by-line);border-radius:8px;background:#fff;color:#344054;text-decoration:none;font-weight:650}.by-category-links a:hover{border-color:#b8872e;color:#805910}
.by-seo-section{margin-top:64px}.by-section-title{display:flex;justify-content:space-between;align-items:end;gap:24px;margin:0 0 24px}.by-section-title h2{margin:0;font-size:27px;line-height:1.25;letter-spacing:-.02em}.by-section-title p{margin:6px 0 0;color:var(--by-muted)}.by-section-title>a{color:var(--by-gold-dark);font-weight:700}
.by-instrument-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--by-line);border-left:1px solid var(--by-line);background:var(--by-paper)}.by-instrument-grid>a{min-height:150px;padding:24px;border-right:1px solid var(--by-line);border-bottom:1px solid var(--by-line);text-decoration:none}.by-instrument-grid>a:hover{position:relative;z-index:1;background:#faf8f3;box-shadow:var(--by-shadow)}.by-instrument-grid strong{display:block;font-size:19px}.by-instrument-grid span{display:block;margin-top:3px;color:var(--by-gold-dark);font-size:13px}.by-instrument-grid p{margin:14px 0 0;color:var(--by-muted);font-size:14px;line-height:1.65}
.by-seo-split{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,.75fr);gap:48px}.by-article-list{border-top:1px solid var(--by-line)}.by-article-row{display:grid;grid-template-columns:180px minmax(0,1fr);gap:24px;padding:26px 0;border-bottom:1px solid var(--by-line)}.by-article-row-no-cover{grid-template-columns:1fr}.by-article-cover{border-radius:9px;overflow:hidden;background:#e9edf2;align-self:start}.by-article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .25s ease-out}.by-article-cover:hover img{transform:scale(1.025)}.by-article-row h2{margin:6px 0 8px;font-size:21px;line-height:1.4}.by-article-row h2 a{text-decoration:none}.by-article-row h2 a:hover{color:var(--by-gold-dark)}.by-article-row p{margin:0;color:var(--by-muted);font-size:15px}.by-article-meta{display:flex;gap:14px;color:var(--by-muted);font-size:13px}.by-article-meta a{color:var(--by-gold-dark)}.by-text-link{display:inline-flex;gap:8px;margin-top:13px;color:var(--by-gold-dark);font-size:14px;font-weight:700}
.by-topic-list{display:block;border-top:1px solid var(--by-line)}.by-topic-list a{display:block;padding:18px 0;border-bottom:1px solid var(--by-line);text-decoration:none}.by-topic-list strong,.by-topic-list span{display:block}.by-topic-list strong{font-size:17px}.by-topic-list span{margin-top:5px;color:var(--by-muted);font-size:14px}.by-topic-list a:hover strong{color:var(--by-gold-dark)}
.by-page-head{padding:52px 0 44px;border-bottom:1px solid var(--by-line)}.by-page-head nav,.by-article-page header nav{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px;color:var(--by-muted);font-size:13px}.by-page-head nav a,.by-article-page header nav a{color:var(--by-gold-dark)}.by-page-head h1{font-size:clamp(34px,4vw,52px)}.by-page-head>p{max-width:70ch;margin:18px 0 0;color:var(--by-muted);font-size:18px}
.by-content-shell{padding-top:42px}.by-topic-directory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--by-line);border:1px solid var(--by-line)}.by-topic-directory>a{min-height:230px;padding:30px;background:#fff;text-decoration:none}.by-topic-directory>a:hover{background:#faf8f3}.by-topic-directory>a>span{color:var(--by-gold-dark);font-size:13px}.by-topic-directory h2{margin:13px 0 10px;font-size:26px}.by-topic-directory p{margin:0;color:var(--by-muted)}.by-topic-directory strong{display:block;margin-top:20px;color:var(--by-gold-dark);font-size:14px}
.by-entity-head{padding-bottom:34px}.by-entity-facts{display:flex;flex-wrap:wrap;gap:32px;margin:28px 0 0}.by-entity-facts div{min-width:130px}.by-entity-facts dt{color:var(--by-muted);font-size:13px}.by-entity-facts dd{margin:2px 0 0;font-weight:700;font-variant-numeric:tabular-nums}.by-entity-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding-top:44px}.by-entity-main>section{margin-top:52px}.by-instrument-grid-compact{grid-template-columns:repeat(3,minmax(0,1fr))}.by-instrument-grid-compact>a{min-height:100px}.by-inline-links{display:flex;flex-wrap:wrap;gap:10px}.by-inline-links a{padding:8px 13px;border:1px solid var(--by-line);border-radius:8px;background:#fff;text-decoration:none}.by-inline-links a:hover{border-color:#b8872e;color:var(--by-gold-dark)}
.by-live-aside{position:sticky;top:102px;align-self:start;padding:28px;background:var(--by-navy);color:#fff;border-radius:12px;box-shadow:var(--by-shadow)}.by-live-aside>span{color:#d9bc7b;font-size:13px}.by-live-aside h2{margin:8px 0 10px;font-size:24px}.by-live-aside p{color:#c7d1df}.by-live-aside dl{border-top:1px solid rgba(255,255,255,.16);border-bottom:1px solid rgba(255,255,255,.16);padding:14px 0}.by-live-aside dl div{display:flex;justify-content:space-between}.by-live-aside dd{margin:0;font-variant-numeric:tabular-nums}.by-live-aside a{display:flex;justify-content:center;margin-top:20px;padding:10px;border-radius:8px;background:#c39745;text-decoration:none;font-weight:700}
.by-richtext{max-width:72ch;font-size:17px;line-height:1.9}.by-richtext h2{margin:2.2em 0 .65em;font-size:28px;line-height:1.35}.by-richtext h3{margin:1.8em 0 .6em;font-size:22px}.by-richtext p,.by-richtext ul,.by-richtext ol,.by-richtext blockquote{margin:1em 0}.by-richtext a{color:#805910}.by-richtext img{margin:28px auto;border-radius:10px}.by-richtext blockquote{padding:16px 20px;border:1px solid #ddd4c1;background:#faf8f3;color:#4a4438;border-radius:8px}.by-richtext table{width:100%;border-collapse:collapse;display:block;overflow-x:auto}.by-richtext th,.by-richtext td{padding:10px 12px;border:1px solid var(--by-line);text-align:left}
.by-article-page{max-width:880px;margin:0 auto;padding-top:52px}.by-article-page h1{font-size:clamp(34px,4.5vw,56px)}.by-article-subtitle{margin:18px 0 0;color:var(--by-muted);font-size:20px}.by-article-byline{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:24px;padding-bottom:26px;border-bottom:1px solid var(--by-line);color:var(--by-muted);font-size:14px}.by-article-page>figure{margin:34px 0}.by-article-page>figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px}.by-article-summary{margin:32px 0;padding:20px 24px;background:#eceff3;border-radius:9px;color:#3c4658;font-weight:600}.by-article-page .by-richtext{margin:0 auto}.by-article-taxonomy{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px;padding-top:20px;border-top:1px solid var(--by-line)}.by-article-taxonomy a,.by-article-taxonomy span{padding:5px 10px;border-radius:6px;background:#e9edf2;font-size:13px;text-decoration:none}.by-risk-note{margin-top:40px;padding:22px 24px;border:1px solid #ddd4c1;border-radius:9px;background:#faf8f3}.by-risk-note p{margin:5px 0 0;color:#625b4d}.by-related{max-width:880px;margin:58px auto 0}.by-related-list{border-top:1px solid var(--by-line)}.by-related-list a{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-bottom:1px solid var(--by-line);text-decoration:none}.by-related-list a:hover strong{color:var(--by-gold-dark)}.by-related-list span{color:var(--by-muted);font-size:13px;white-space:nowrap}
.by-seo-empty{padding:36px;border:1px dashed #c9d0da;border-radius:10px;background:rgba(255,255,255,.6);text-align:center}.by-seo-empty strong{font-size:19px}.by-seo-empty p{margin:6px auto 0;max-width:55ch;color:var(--by-muted)}.by-seo-empty a{display:inline-block;margin-top:14px;color:var(--by-gold-dark);font-weight:700}.by-seo-empty-small{padding:24px}.by-pagination{display:flex;justify-content:center;align-items:center;gap:16px;margin-top:34px}.by-pagination a,.by-pagination span{padding:8px 12px;border-radius:7px}.by-pagination a{border:1px solid var(--by-line);background:#fff;text-decoration:none}.by-pagination span{color:var(--by-muted)}
.by-not-found{min-height:58vh;display:grid;place-content:center;text-align:center}.by-not-found>span{color:#b8872e;font:700 72px/1 Georgia,serif}.by-not-found h1{margin:16px 0 0;font-size:36px}.by-not-found p{color:var(--by-muted)}.by-not-found>div{display:flex;justify-content:center;gap:12px;margin-top:16px}.by-not-found .by-secondary-link{border-color:#aeb7c4;color:var(--by-ink)}
.by-seo-footer{width:min(1240px,calc(100% - 40px));margin:0 auto;padding:34px 0 42px;border-top:1px solid var(--by-line);color:var(--by-muted);font-size:13px}.by-seo-footer>div{display:flex;align-items:center;gap:28px}.by-seo-footer strong{color:var(--by-ink);font-size:17px}.by-seo-footer nav{display:flex;gap:18px}.by-seo-footer p{margin:12px 0 0}
@media(max-width:900px){.by-seo-header-inner{width:min(100% - 28px,1240px);min-height:64px}.by-seo-nav{position:fixed;left:0;right:0;bottom:0;z-index:30;height:58px;justify-content:space-around;background:#081a35;box-shadow:0 -8px 24px rgba(8,26,53,.16);padding-bottom:env(safe-area-inset-bottom)}.by-seo-nav a{padding:0 8px;font-size:13px}.by-seo-nav a.is-current:after{left:8px;right:8px}.by-seo-live-link{margin-left:auto}.by-seo-main{width:min(100% - 28px,1240px);padding-top:28px;padding-bottom:88px}.by-seo-hero{padding:38px;grid-template-columns:1fr;gap:36px}.by-seo-hero dl{padding:24px 0 0;border-left:0;border-top:1px solid rgba(255,255,255,.2);display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.by-seo-hero dl div+div{margin-top:0}.by-instrument-grid{grid-template-columns:repeat(2,1fr)}.by-seo-split,.by-entity-layout{grid-template-columns:1fr}.by-live-aside{position:static}.by-topic-directory{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){body{font-size:15px}.by-seo-header-inner{width:calc(100% - 24px);gap:12px}.by-seo-brand-mark{width:36px;height:36px}.by-seo-brand strong{font-size:17px}.by-seo-brand small{font-size:8px}.by-seo-live-link{min-height:40px;padding:0 12px;font-size:13px}.by-seo-main,.by-seo-footer{width:calc(100% - 24px)}.by-seo-hero{min-height:0;padding:30px 22px;border-radius:12px}.by-seo-hero h1{font-size:34px}.by-seo-hero p{font-size:16px}.by-hero-actions{flex-direction:column}.by-seo-hero dl{grid-template-columns:1fr 1fr}.by-seo-hero dl div:last-child{grid-column:1/-1}.by-seo-section{margin-top:46px}.by-section-title{align-items:start}.by-section-title h2{font-size:24px}.by-instrument-grid{grid-template-columns:1fr}.by-instrument-grid>a{min-height:112px}.by-article-row{grid-template-columns:1fr}.by-article-cover{max-width:none}.by-page-head{padding:34px 0}.by-page-head h1,.by-article-page h1{font-size:34px}.by-page-head>p{font-size:16px}.by-topic-directory{grid-template-columns:1fr}.by-topic-directory>a{min-height:0;padding:24px}.by-entity-layout{gap:40px;padding-top:30px}.by-instrument-grid-compact{grid-template-columns:1fr 1fr}.by-instrument-grid-compact>a{padding:17px}.by-article-page{padding-top:32px}.by-article-summary{padding:17px}.by-richtext{font-size:16px;line-height:1.85}.by-richtext h2{font-size:24px}.by-related-list a{display:block}.by-related-list span{display:block;margin-top:4px}.by-not-found>div{flex-direction:column}.by-seo-footer>div{display:block}.by-seo-footer nav{margin-top:10px;flex-wrap:wrap}.by-seo-footer{padding-bottom:82px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.by-article-cover img{transition:none}}

/* V10.0.0-alpha4 acquisition shell */
.by-seo-brand{gap:0}.by-seo-brand img{display:block;width:205px;height:auto}
.by-seo-live-link{border:1px solid #b8872e;color:#f3d58e;background:transparent}.by-seo-live-link:hover,.by-seo-live-link.is-live{background:#b8872e;color:#fff}.by-seo-live-link i{background:#d9bc7b}.by-seo-live-link.is-live i{background:#fff}
.by-live-ribbon{background:#fff;border-bottom:1px solid var(--by-line)}.by-live-ribbon>div{width:min(1240px,calc(100% - 40px));min-height:46px;margin:auto;display:flex;align-items:center;gap:18px}.by-live-ribbon span{display:inline-flex;align-items:center;gap:8px;color:#805910;font-size:13px;font-weight:800}.by-live-ribbon span i{width:7px;height:7px;border-radius:50%;background:#b8872e}.by-live-ribbon.is-live span{color:#a22727}.by-live-ribbon.is-live span i{background:#d33}.by-live-ribbon p{margin:0;color:var(--by-muted);font-size:13px}.by-live-ribbon a{display:inline-flex;gap:7px;margin-left:auto;color:var(--by-gold-dark);font-size:13px;font-weight:750;text-decoration:none}
.by-seo-hero{background:#0b203d}.by-hero-kicker{margin:0 0 10px!important;color:#d9bc7b!important;font-size:11px!important;font-weight:800;letter-spacing:.17em}
.by-live-aside{top:132px}.by-live-aside>img{width:42px;margin:0 0 16px}.by-live-aside dl div{display:block}.by-live-aside dl div+div{margin-top:10px}.by-live-aside dt{color:#9dabc0;font-size:12px}.by-live-aside dd{margin:1px 0 0;font-weight:700}
.by-article-brand{display:flex;align-items:center;gap:10px;margin-bottom:22px;color:var(--by-gold-dark);font-size:13px;font-weight:800;letter-spacing:.06em}.by-article-brand img{width:34px;height:34px;padding:6px;border-radius:8px;background:#0b203d}
.by-footer-brand{display:block;padding:7px 10px;border-radius:8px;background:#0b203d}.by-footer-brand img{display:block;width:171px}
@media(max-width:900px){.by-live-ribbon>div{width:min(100% - 28px,1240px)}.by-live-ribbon p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}
@media(max-width:600px){.by-seo-brand img{width:132px}.by-seo-live-link{min-height:40px;padding:0 10px;font-size:12px}.by-live-ribbon>div{width:calc(100% - 24px);min-height:52px;gap:10px}.by-live-ribbon p{display:none}.by-live-ribbon a{font-size:12px}.by-footer-brand{display:inline-block}}
@media(max-width:380px){.by-seo-brand img{width:116px}.by-seo-live-link{padding:0 8px;font-size:11px}.by-live-ribbon span,.by-live-ribbon a{font-size:11px}}