.engine-opening{padding:132px 0 46px;background:radial-gradient(ellipse at 75% 0,#22313960,transparent 55%),#080e12}.engine-opening-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;padding-bottom:28px}.engine-opening-head h1{font-size:clamp(36px,4.8vw,66px);line-height:1.35;letter-spacing:.07em;margin:12px 0 0}.engine-opening-head>p{font-size:17px;color:#b7c6cb;padding-bottom:8px;margin:0}.engine-brand-player{background:#030506;border:1px solid #8298a330;box-shadow:0 25px 75px #0005}.engine-brand-player video{display:block;width:100%;aspect-ratio:16/9;object-fit:contain}.engine-opening-caption{display:flex;justify-content:space-between;gap:20px;font-size:13px;color:#9cb0bd;margin-top:17px}.engine-library{padding-top:90px;padding-bottom:50px}.engine-chapter-nav{display:flex;gap:8px 25px;flex-wrap:wrap;padding:22px 0 30px;border-bottom:1px solid #92a9b32e;margin-bottom:20px}.engine-chapter-nav a{font-size:15px;color:#c7d1d5;padding:8px 0;display:flex;gap:9px}.engine-chapter-nav a:hover{color:#e2c99d}.engine-chapter-nav span{font-size:13px;color:#b9a37b;font-variant-numeric:tabular-nums}.engine-chapter{padding:46px 0 58px;border-bottom:1px solid #8fa4b129;scroll-margin-top:106px}.engine-chapter:last-child{border-bottom:0}.engine-chapter-head{display:flex;justify-content:space-between;align-items:center;gap:22px;padding-bottom:26px}.engine-chapter-head>div{display:flex;align-items:center;gap:18px}.engine-chapter-num{font-size:36px;line-height:1;color:#b9a37b;font-weight:400;font-variant-numeric:tabular-nums}.engine-chapter-type{font-size:15px;color:#b5c5cf}.engine-chapter-layout{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(0,1fr);gap:46px;align-items:start}.engine-chapter-media{min-width:0;position:sticky;top:110px}.engine-chapter-media video{width:100%;aspect-ratio:16/9;display:block;background:#050a0e;border:1px solid #95abba30}.engine-video-origin{display:flex;gap:15px;justify-content:space-between;color:#94aab8;font-size:13px;line-height:1.65;margin-top:13px}.engine-chapter-copy h3{font-size:clamp(24px,2.2vw,34px);font-weight:650;line-height:1.5;margin:0 0 17px;color:#e7edf0}.engine-chapter-copy>p{font-size:16px;color:#b7c8d1;line-height:1.9;margin:0 0 26px}.engine-chapter-copy ol{list-style:none;margin:0;padding:0}.engine-chapter-copy li{display:flex;gap:18px;padding:17px 0;border-top:1px solid #95abba20}.engine-chapter-copy li>span{color:#b8a37c;font-size:13px;padding-top:4px}.engine-chapter-copy h4{font-size:17px;margin:0 0 6px;font-weight:600}.engine-chapter-copy li p{font-size:15px;color:#9fb4c1;line-height:1.85;margin:0}.engine-chapter-pending{aspect-ratio:16/9;position:relative;overflow:hidden;background:#111d26;border:1px solid #91a8b32c}.engine-chapter-pending>img{width:100%;height:100%;object-fit:cover;opacity:.28;filter:saturate(.6)}.engine-chapter-pending:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#071119e8,transparent)}.engine-chapter-pending>div{position:absolute;bottom:25px;left:27px;right:27px;z-index:1}.engine-chapter-pending span{font-size:13px;letter-spacing:.06em;color:#bbab8d;display:block}.engine-chapter-pending strong{font-size:25px;display:block;margin-top:9px}.engine-chapter-pending p{font-size:14px;color:#a5b7c2;margin:9px 0 0}.main-nav>a{font-size:14px}
.engine-chapter-nav{position:sticky;top:78px;z-index:12;background:#10171bf5;backdrop-filter:blur(18px);padding:15px 0;margin-bottom:12px;gap:8px 20px}.engine-chapter-nav a{border-bottom:2px solid transparent;transition:color .2s,border-color .2s}.engine-chapter-nav a.current{color:#ead5ad;border-bottom-color:#d8bb8b}.engine-chapter{scroll-margin-top:185px}.engine-cues{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:23px}.engine-cues button{position:relative;text-align:left;padding:14px 12px 16px;background:#1b262d;border:1px solid #8fa8b329;border-radius:7px;color:#cbd6db;cursor:pointer;overflow:hidden;transition:background .2s,border-color .2s}.engine-cues button span{display:block;font-size:13px;font-variant-numeric:tabular-nums;color:#9eafb9;margin-bottom:7px}.engine-cues button strong{font-size:15px;font-weight:500}.engine-cues button i{position:absolute;left:0;bottom:0;height:2px;width:0;background:#d8bb8b;transition:width .25s}.engine-cues button.active,.engine-cues button:hover{background:#2a302f;border-color:#d8bb8b66}.engine-cues button.active i{width:100%}.engine-cues button:focus-visible{outline:2px solid #e9c68e;outline-offset:3px}.engine-cue-help{font-size:13px;color:#a7b9c3;margin:12px 0 0}.video-load-error{padding:20px;border:1px solid #d8bb8b40;background:#172127;color:#e0e7e9;font-size:15px;border-radius:7px;margin-top:14px}.video-load-error button{margin-top:12px;border:1px solid #d8bb8b80;background:transparent;color:#e7cc9e;border-radius:5px;padding:9px 16px;cursor:pointer}.video-load-error p{margin:0}.video-load-error button:focus-visible{outline:2px solid #e9c68e;outline-offset:3px}
@media(max-width:760px){.engine-chapter-nav{top:67px;flex-wrap:nowrap;overflow-x:auto;gap:17px;padding:11px 0;scrollbar-width:thin}.engine-chapter-nav a{white-space:nowrap;flex-shrink:0}.engine-chapter{scroll-margin-top:150px}.engine-cues{gap:6px}.engine-cues button{padding:12px 8px 14px}.engine-cues button strong{font-size:14px}.engine-video-origin{font-size:14px}.engine-opening-caption{font-size:14px}}
@media(prefers-reduced-motion:reduce){.engine-cues button,.engine-cues button i,.engine-chapter-nav a{transition:none}}
@media(min-width:1600px){.engine-brand-player{max-width:1320px;margin:auto}.engine-opening-caption{max-width:1320px;margin:17px auto 0}}
@media(max-width:1000px){.engine-chapter-layout{grid-template-columns:1fr;gap:28px}.engine-chapter-media{position:static}.engine-chapter-copy ol{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.engine-chapter-head .eyebrow{font-size:13px}.engine-opening-head{align-items:flex-start;flex-direction:column;gap:12px}.engine-opening-head>p{font-size:16px;padding:0}}
@media(max-width:650px){.engine-opening{padding-top:110px;padding-bottom:28px}.engine-opening-head h1{font-size:39px}.engine-opening-caption{flex-direction:column;gap:5px;font-size:13px}.engine-library{padding-top:50px}.engine-chapter-nav{gap:6px 18px}.engine-chapter-nav a{font-size:14px}.engine-chapter-head{align-items:flex-start;flex-direction:column;gap:13px}.engine-chapter-copy ol{display:block}.engine-chapter-copy h3{font-size:27px}.engine-chapter{padding:33px 0 40px}.engine-video-origin{flex-direction:column;gap:3px}.engine-chapter-pending>div{left:18px;bottom:18px}.engine-chapter-pending strong{font-size:22px}}
.engine-chapter-media{top:var(--engine-player-top,180px)}
.engine-chapter-nav{scrollbar-color:#8a816e #19262d}
.engine-chapter-nav::-webkit-scrollbar{height:4px}
.engine-chapter-nav::-webkit-scrollbar-track{background:#19262d}
.engine-chapter-nav::-webkit-scrollbar-thumb{background:#8a816e;border-radius:4px}