.bt-page{--bt-page-bg:#fbfbf6;--bt-light-bg:#f8e8ff;--bt-accent-bg:#e5adff;--bt-dark-bg:#3b1044;--bt-black:#000;--bt-line:#0005032e;background:var(--bt-page-bg);color:#000503;min-height:100dvh}.bt-page,.bt-page *{box-sizing:border-box}.bt-index{width:min(1280px,100% - 85px);margin:0 auto;padding:64px 0 112px}.bt-index>h1{text-align:center;margin:0 0 56px;font-family:Georgia,Songti SC,serif;font-size:60px;font-weight:500;line-height:1.1}.bt-collections{gap:48px;display:grid}.bt-collection{background:var(--bt-light-bg);grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;height:433px;padding:20px 34px;display:grid}.bt-collection:nth-child(4n+3){background:var(--bt-accent-bg)}.bt-collection.is-dark{background:var(--bt-dark-bg);color:#fff}.bt-collection-main{flex-direction:column;align-items:flex-start;min-width:0;padding-bottom:37px;display:flex}.bt-kicker{margin-top:16px;font-size:14px;line-height:1.3}.bt-collection h2{letter-spacing:-.02em;max-width:640px;margin:34px 0 8px;font-family:Georgia,Songti SC,serif;font-size:52px;font-weight:500;line-height:1.02}.bt-collection-main p{opacity:.75;max-width:620px;margin:0;font-size:24px;line-height:1.35}.bt-collection-main>a{border:1px solid var(--bt-black);background:var(--bt-black);color:#fff;cursor:pointer;border-radius:12px;justify-content:center;align-items:center;min-width:160px;min-height:54px;margin-top:auto;padding:0 24px;font-size:16px;text-decoration:none;transition:background-color .18s,color .18s;display:inline-flex}.bt-collection-main>a:hover{color:var(--bt-black);background:0 0}.bt-collection.is-dark .bt-collection-main>a{color:#000;background:#fff;border-color:#fff}.bt-collection.is-dark .bt-collection-main>a:hover{color:#fff;background:0 0}.bt-representatives{align-content:center;display:grid}.bt-representatives>a{min-width:0;color:inherit;border-bottom:1px solid;grid-template-columns:145px minmax(0,1fr);align-items:center;gap:16px;padding:16px 0;text-decoration:none;display:grid}.bt-representatives>a:last-child{border-bottom:0}.bt-thumb,.bt-topic-cover{background:#eee;display:block;position:relative;overflow:hidden}.bt-thumb{width:145px;height:96px}.bt-thumb .fr-sc-label,.bt-topic-cover .fr-sc-label{display:none}.bt-representatives b{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-family:Georgia,Songti SC,serif;font-size:24px;font-weight:500;line-height:1.25;display:-webkit-box;overflow:hidden}.bt-representatives small{opacity:.58;margin-top:6px;font-size:12px;display:block}.bt-topic-nav,.bt-topic-nav .eh-header{background:var(--bt-dark-bg);color:#fff}.bt-topic-nav .eh-brand,.bt-topic-nav .eh-icon-btn{color:#fff}.bt-topic-nav .eh-nav-link:after{background:#fff}.bt-topic-nav .eh-icon-btn:hover,.bt-topic-nav .eh-icon-btn.eh-active{color:#fff;background:#ffffff1f}.bt-topic-page{min-height:0}.bt-topic-hero{background:var(--bt-dark-bg);color:#e5adff;align-items:center;min-height:528px;display:flex}.bt-topic-hero>div{width:min(1064px,100% - 48px);margin:0 auto;padding-bottom:0}.bt-topic-hero a{color:inherit;font-size:13px;text-decoration:none}.bt-topic-hero h1{letter-spacing:-.035em;max-width:850px;margin:18px 0 34px;font-family:Georgia,Songti SC,serif;font-size:96px;font-weight:500;line-height:1.02}.bt-topic-hero p{max-width:880px;margin:0;font-size:32px;line-height:1.42}.bt-topic-list{width:min(486px,100% - 48px);margin:0 auto;padding:58px 0 92px;transform:translate(-28px)}.bt-topic-row{border-bottom:1px solid var(--bt-line);color:#000503;grid-template-columns:118px minmax(0,1fr);align-items:center;gap:24px;min-height:138px;text-decoration:none;display:grid}.bt-topic-cover{width:118px;height:96px}.bt-topic-row small{border:1px solid #00050347;border-radius:999px;align-items:center;min-height:22px;padding:0 8px;font-size:10px;line-height:1;display:inline-flex}.bt-topic-row b{margin-top:9px;font-family:Georgia,Songti SC,serif;font-size:17px;font-weight:500;line-height:1.45;display:block}.ad-breakthrough-source{color:#47755f;margin-bottom:18px;font-size:13px;text-decoration:none;display:inline-block}.bt-outline-trigger{z-index:69;color:#fff;cursor:pointer;background:#000503;border:0;border-radius:12px;justify-content:space-between;align-items:center;width:180px;height:48px;padding:0 24px;display:flex;position:fixed;top:50%;left:18px;transform:translateY(-50%)}.bt-outline-trigger span,.bt-outline-panel header>span{font:18px/1 Georgia,Songti SC,serif}.bt-outline-trigger i,.bt-outline-panel header i{gap:4px;width:24px;display:grid}.bt-outline-trigger i b,.bt-outline-panel header i b{background:currentColor;height:2px;display:block}.bt-outline-backdrop{z-index:70;cursor:default;background:0 0;border:0;position:fixed;inset:0}.bt-outline-panel{z-index:71;color:#fff;scrollbar-color:#333 transparent;scrollbar-width:auto;background:#000503;border-radius:24px;width:360px;height:min(80vh,760px);padding:0 48px 28px;position:fixed;top:50%;left:24px;overflow-y:auto;transform:translateY(-50%);box-shadow:0 16px 50px #00050329}.bt-outline-panel::-webkit-scrollbar{width:20px}.bt-outline-panel::-webkit-scrollbar-track{background:0 0}.bt-outline-panel::-webkit-scrollbar-thumb{background:#333;border-radius:999px}.bt-outline-panel header{z-index:2;background:#000503;justify-content:space-between;align-items:center;height:96px;display:flex;position:sticky;top:0}.bt-outline-panel header button{color:#fff;cursor:pointer;background:0 0;border:0;place-items:center;width:48px;height:40px;display:grid}.bt-outline-panel header i{gap:8px;width:48px}.bt-outline-panel header i b{height:3px}.bt-outline-panel nav a{color:#fff;border-bottom:1px solid #333;align-items:center;min-height:104px;padding:20px 0;font:18px/1.35 Georgia,Songti SC,serif;text-decoration:none;display:flex}.bt-outline-panel nav a.is-current{color:#22f7a9}.bt-long-article{background:#fbfbf6}.bt-long-article .ad-shell{width:100%;padding:118px 0 100px}.bt-long-article .ad-header{width:min(1120px,100% - 64px);margin:0 auto 120px}.bt-long-lead{grid-template-columns:520px minmax(0,1fr);align-items:center;gap:64px;display:grid}.bt-long-cover{background:#eee;width:520px;height:416px;position:relative;overflow:hidden}.bt-long-cover .fr-sc-label{display:none}.bt-long-lead-copy{min-width:0}.bt-editorial-tag{border:1px solid #00050347;border-radius:999px;align-items:center;min-height:24px;padding:0 9px;font-size:11px;line-height:1;display:inline-flex}.bt-long-article .ad-header h1{letter-spacing:-.025em;max-width:530px;margin:30px 0 18px;font-family:Georgia,Songti SC,serif;font-size:48px;font-weight:500;line-height:1.12}.bt-long-article .ad-deck{color:#292b29;max-width:510px;margin:0;font-family:Georgia,Songti SC,serif;font-size:22px;line-height:1.48}.bt-long-article .ad-breakthrough-source{margin:28px 0 0;font-size:13px}.bt-long-article .ad-content{width:min(620px,100% - 48px);margin:0 auto;font-size:18px;line-height:1.72}.bt-long-article .ad-content .ad-lead{color:#292b29;margin-bottom:52px;font-size:22px;font-style:normal;line-height:1.6}.bt-long-article .ad-content blockquote{text-align:center;background:0 0;border-radius:0;margin:62px -76px;padding:0}.bt-long-article .ad-content blockquote p{font-size:29px;font-weight:600;line-height:1.35}.bt-long-article .ad-content blockquote:before{content:"“";height:48px;font:700 68px/.9 Georgia,serif;display:block}.bt-long-article .ad-content h2{text-underline-offset:5px;margin-top:72px;font-size:30px;text-decoration:underline;text-decoration-thickness:1px}.bt-long-article .ad-content figure{margin:58px 0}.bt-long-article .ad-comments,.bt-long-article .ad-prev-next{width:min(760px,100% - 48px);margin-left:auto;margin-right:auto}@media (max-width:719px){.bt-index{width:calc(100% - 32px);padding:42px 0 72px}.bt-index>h1{margin-bottom:36px;font-size:44px}.bt-collections{gap:24px}.bt-collection{grid-template-columns:1fr;gap:30px;height:auto;min-height:0;padding:30px 24px}.bt-collection-main{padding-bottom:0}.bt-kicker{margin-top:0;font-size:12px}.bt-collection h2{margin:18px 0 12px;font-size:32px;line-height:1.12}.bt-collection-main p{font-size:15px;line-height:1.6}.bt-collection-main>a{min-height:40px;margin-top:26px;padding:0 19px;font-size:13px}.bt-representatives>a{grid-template-columns:92px minmax(0,1fr);gap:16px;padding:12px 0}.bt-thumb{width:92px;height:62px}.bt-representatives b{font-size:15px;line-height:1.35}.bt-representatives small{margin-top:5px;font-size:11px}.bt-topic-hero{min-height:350px}.bt-topic-hero>div{width:calc(100% - 40px);padding-bottom:0}.bt-topic-hero a{font-size:12px}.bt-topic-hero h1{margin:24px 0 20px;font-size:44px;line-height:1.06}.bt-topic-hero p{font-size:16px;line-height:1.5}.bt-topic-list{width:calc(100% - 40px);padding:34px 0 64px;transform:none}.bt-topic-row{grid-template-columns:82px minmax(0,1fr);gap:15px;min-height:105px}.bt-topic-cover{width:82px;height:72px}.bt-topic-row b{margin-top:7px;font-size:15px}.bt-long-article .ad-shell{padding:44px 0 64px}.bt-long-article .ad-header{width:calc(100% - 32px);margin-bottom:64px}.bt-long-lead{grid-template-columns:1fr;gap:28px}.bt-long-cover{aspect-ratio:1.25;width:100%;height:auto}.bt-long-article .ad-header h1{margin-top:22px;font-size:38px}.bt-long-article .ad-deck{font-size:18px}.bt-long-article .ad-content{width:calc(100% - 40px);font-size:17px}.bt-long-article .ad-content blockquote{margin:52px 0}.bt-long-article .ad-content blockquote p{font-size:24px}.bt-outline-trigger{top:auto;left:50%;bottom:calc(19px + env(safe-area-inset-bottom));border-radius:23px;width:min(360px,100% - 30px);height:97px;padding:0 48px;transform:translate(-50%)}.bt-outline-trigger span{font-size:20px}.bt-outline-trigger i{gap:7px;width:42px}.bt-outline-trigger i b{height:3px}.bt-outline-panel{width:min(360px,100% - 30px);height:min(1334px, calc(100dvh - 160px - env(safe-area-inset-bottom)));padding-inline:48px;top:calc(50% - 14px);left:50%;transform:translate(-50%,-50%)}.bt-outline-panel nav a{min-height:192px;font-size:18px}}@media (min-width:600px) and (max-width:719px){.bt-outline-trigger{left:calc(50% - 53px)}}@media (min-width:500px) and (max-width:599px){.bt-outline-trigger,.bt-outline-panel{left:calc(50% - 37px)}}