:root{color-scheme:light;--ink:#202723;--muted:#6a746e;--line:#dce3de;--green:#16674a;--bg:#f6f8f6;--amber:#986018}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--green)}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a,select{touch-action:manipulation}:focus-visible{outline:3px solid #58ad8b;outline-offset:3px}button{cursor:pointer}[hidden]{display:none!important}
.masthead{height:76px;display:flex;align-items:center;gap:42px;padding:0 max(24px,calc((100vw - 1240px)/2));background:#fff;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:650;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:38px;height:38px;background:var(--green);color:#fff;font-size:15px;border-radius:5px}.brand small{font-size:10px;color:var(--muted);font-weight:600;margin-left:7px}.masthead nav{display:flex;gap:28px;font-size:13px}.workspace-label{margin-left:auto;color:var(--muted);font-size:12px}main{max-width:1288px;margin:auto;padding:0 24px}.heading-band{display:flex;justify-content:space-between;gap:30px;padding:36px 0 30px;border-bottom:1px solid var(--line)}.eyebrow{font-size:10px;font-weight:700;color:var(--muted);margin:0 0 5px}.heading-band h1{font-size:28px;line-height:1.35;margin:0;font-weight:650}.subtitle{margin:7px 0 0;color:var(--muted);font-size:13px}.stats{display:flex;gap:40px;margin:12px 0 0;align-items:center}.stats dt{font-size:11px;color:var(--muted)}.stats dd{font-size:28px;line-height:1.4;margin:2px 0 0;font-variant-numeric:tabular-nums}.stats dd.date{font-size:17px}.workspace{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:44px;padding:30px 0 40px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:20px}.section-heading h2{font-size:19px;line-height:1.4;margin:0;font-weight:650}.text-link{font-size:12px;white-space:nowrap;color:var(--green)}.text-link span{margin-left:5px}.section-note{font-size:11px;color:var(--muted)}.search-bar{display:flex;gap:10px}.search-bar label{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid #d2dbd5;border-radius:5px;padding:0 12px;flex:1;min-width:0}.search-bar label span{font-size:23px;color:var(--muted)}.search-bar input{border:0;background:none;width:100%;height:40px;min-width:0;outline:none;color:var(--ink)}select{appearance:auto;background:#fff;border:1px solid #d2dbd5;border-radius:5px;color:var(--ink);padding:8px 10px;min-width:0}.search-bar select{max-width:150px;font-size:12px}.library-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;padding:13px 0 8px}.video-list{border-top:1px solid var(--line)}.video-row{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);align-items:center;min-height:98px}.video-row:hover .video-title{color:var(--green)}.thumbnail{width:112px;aspect-ratio:16/10;object-fit:cover;flex:none;background:#e6ece8;border-radius:4px}.video-body{min-width:0;flex:1}.video-title{font-size:13px;font-weight:550;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere;margin:0}.video-meta{font-size:10px;color:var(--muted);margin-top:6px;display:flex;flex-wrap:wrap;gap:9px}.video-arrow{color:#87958c;font-size:19px;flex:none}.video-index{display:grid;place-items:center;width:44px;height:44px;background:#edf1ee;font-size:12px;color:#78877e;flex:none;border-radius:4px;font-variant-numeric:tabular-nums}.list-footer{display:flex;justify-content:space-between;align-items:center;padding-top:18px;gap:12px;font-size:12px}.list-footer button{border:1px solid #cbd7cf;background:#fff;padding:6px 14px;border-radius:4px;color:var(--ink)}.list-footer a{margin-left:auto;color:var(--green)}.tool-section{border-top:1px solid var(--line);padding:20px 0 22px}.tool-heading{display:flex;align-items:flex-start;gap:10px}.tool-number{font-size:10px;color:var(--muted);padding-top:3px}.tool-heading h3{font-size:15px;margin:0;line-height:1.5}.tool-heading p{font-size:11px;color:var(--muted);margin:2px 0 0}.tool-tag{font-size:10px;border-radius:3px;padding:2px 8px;margin-left:auto;white-space:nowrap}.green{color:var(--green);background:#e5f0e9}.amber{color:var(--amber);background:#f6ecdc}.backtest-form{margin:18px 0 0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-grid label{font-size:11px;color:var(--muted);display:grid;gap:5px}.form-grid select{height:39px;width:100%;font-size:12px}.primary-button,.secondary-button{display:flex;align-items:center;justify-content:space-between;width:100%;height:40px;padding:0 13px;border-radius:4px;font-size:12px;font-weight:600}.primary-button{margin-top:12px;background:var(--green);color:#fff;border:1px solid var(--green)}.primary-button:hover{background:#115239}.secondary-button{border:1px solid #c8d5cd;background:#fff;color:var(--green);margin-top:17px}.quick-links{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:13px;font-size:11px}.quick-links>span{color:var(--muted)}.quick-links a{color:var(--green);font-weight:600}.analysis-items{display:flex;gap:6px 17px;flex-wrap:wrap;font-size:11px;color:var(--muted);margin-top:16px}.research-notes{padding:20px 0;border-top:1px solid var(--line)}.research-notes h3{font-size:12px;margin:0 0 12px}.research-notes dl{margin:0;font-size:11px}.research-notes dl div{display:flex;gap:15px;justify-content:space-between;margin:8px 0}.research-notes dt{color:var(--muted);flex:none}.research-notes dd{margin:0;text-align:right;overflow-wrap:anywhere}.risk-note{font-size:11px;color:var(--muted);line-height:1.8;margin:0;border-left:2px solid #c3d4c8;padding-left:12px}.empty{color:var(--muted);padding:34px 0;text-align:center}footer{max-width:1240px;margin:0 auto;padding:19px 0 26px;display:flex;justify-content:space-between;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}
@media(max-width:900px){.workspace{gap:28px;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}.stats{gap:22px}.thumbnail{width:90px}.workspace-label{display:none}.masthead{padding:0 24px}.section-note{display:none}footer{margin:0 24px}}
@media(max-width:680px){.masthead{height:64px;gap:20px;padding:0 18px;justify-content:space-between}.brand{font-size:16px}.brand-mark{width:33px;height:33px;font-size:13px}.brand small{display:none}.masthead nav{gap:17px;font-size:12px}main{padding:0 18px}.heading-band{display:block;padding:26px 0 20px}.heading-band h1{font-size:24px}.stats{margin:24px 0 0;justify-content:space-between;gap:10px}.stats dd{font-size:25px}.stats dd.date{font-size:15px}.workspace{display:flex;flex-direction:column;gap:34px;padding-top:24px}.research{order:-1}.form-grid{gap:10px}.tool-section{padding:16px 0}.research-notes{padding:16px 0}.section-heading{margin-bottom:16px}.section-heading h2{font-size:18px}.thumbnail{width:94px}.video-row{gap:11px}.search-bar{gap:7px}.search-bar select{max-width:120px}.search-bar input{font-size:12px}.video-title{font-size:12px}footer{margin:0 18px;gap:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}