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var(--lw-rule)}[data-app=tracesheet] .lw-chapter:first-child{border-top-color:var(--lw-ink)}[data-app=tracesheet] .lw-chapter-mark{display:flex;align-items:flex-end;gap:14px}[data-app=tracesheet] .lw-chapter-num{font-family:var(--lw-serif);font-size:1rem;font-weight:600;color:var(--lw-red-ink);font-variant-numeric:tabular-nums}[data-app=tracesheet] .lw-chapter-cell{width:72px;font-size:72px}[data-app=tracesheet] .lw-labels{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:1.25rem}[data-app=tracesheet] .lw-labels-name{font-size:var(--t-small);color:var(--lw-ink-soft);margin-right:4px}[data-app=tracesheet] .lw-labels .lw-ui{font-size:.9375rem}[data-app=tracesheet] .lw-chapter-media{width:min(78vw,300px)}@media (min-width:900px){[data-app=tracesheet] .lw-chapter{grid-template-columns:120px minmax(0,1fr) 300px;gap:48px;align-items:start}[data-app=tracesheet] .lw-chapter-mark{flex-direction:column;align-items:flex-start;gap:10px;position:sticky;top:24px}[data-app=tracesheet] 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li:before{content:"";position:absolute;left:0;top:.45em;width:.75em;height:.75em;border:2px solid var(--lw-red);background:linear-gradient(var(--lw-red),var(--lw-red)) 50% /1px 100% no-repeat,linear-gradient(var(--lw-red),var(--lw-red)) 50% /100% 1px no-repeat;box-sizing:border-box}@media (min-width:640px){[data-app=tracesheet] .lw-specimens{grid-template-columns:repeat(3,minmax(0,1fr))}[data-app=tracesheet] .lw-facts{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:1100px){[data-app=tracesheet] .lw-specimens{grid-template-columns:repeat(6,minmax(0,1fr))}}[data-app=tracesheet] .lw-dashes,[data-app=tracesheet] .lw-ticks{list-style:none;margin:1rem 0 0;padding:0;display:grid;gap:.6rem}[data-app=tracesheet] .lw-ticks li:before{content:"";position:absolute;left:.1em;top:.35em;width:.45em;height:.8em;border-right:2.5px solid var(--lw-red);border-bottom:2.5px solid var(--lw-red);transform:rotate(40deg)}[data-app=tracesheet] .lw-dashes 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.lw-contents-num{font-family:var(--lw-serif);font-size:1.25rem;font-weight:600;color:var(--lw-red-ink);font-variant-numeric:tabular-nums;line-height:1.5}[data-app=tracesheet] .lw-contents-title{font-family:var(--lw-serif);font-size:clamp(1.25rem,1.1rem + .5vw,1.5rem);font-weight:600;line-height:1.3;margin:0}[data-app=tracesheet] .lw-contents-title a{text-decoration:none}[data-app=tracesheet] .lw-contents-title a:after{content:"";position:absolute;inset:0}[data-app=tracesheet] .lw-contents-row{position:relative}[data-app=tracesheet] .lw-contents-row:hover .lw-contents-title a{color:var(--lw-red-ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.2em}[data-app=tracesheet] .lw-contents-sum{margin:4px 0 0;color:var(--lw-ink-soft)}[data-app=tracesheet] .lw-contents-steps{grid-column:2;font-size:var(--t-small);color:var(--lw-ink-soft)}@media (min-width:760px){[data-app=tracesheet] .lw-contents-row{grid-template-columns:3.5rem minmax(0,1fr) auto;align-items:baseline}[data-app=tracesheet] .lw-contents-steps{grid-column:3;white-space:nowrap}}[data-app=tracesheet] .lw-videos-grid{display:grid;gap:32px;align-items:center}[data-app=tracesheet] .lw-video{display:flex;flex-direction:column;gap:14px;color:inherit;text-decoration:none}[data-app=tracesheet] .lw-video-thumb{position:relative;display:block;aspect-ratio:16/9;border-radius:6px;overflow:hidden;background:var(--lw-paper-deep);outline:1px solid var(--lw-rule);outline-offset:-1px}[data-app=tracesheet] .lw-video-thumb img{display:block;width:100%;height:100%;object-fit:cover}[data-app=tracesheet] .lw-video:focus-visible .lw-video-thumb,[data-app=tracesheet] .lw-video:hover .lw-video-thumb{outline:2px solid var(--lw-red);outline-offset:-2px}[data-app=tracesheet] .lw-video-text{display:flex;flex-direction:column;gap:4px}[data-app=tracesheet] .lw-video-date{display:inline-flex;align-items:center;gap:8px;font-size:var(--t-small);color:var(--lw-ink-soft)}[data-app=tracesheet] .lw-video-play{flex:none;border-style:solid;border-width:5px 0 5px 9px;border-color:transparent transparent transparent var(--lw-red)}[data-app=tracesheet] .lw-video-title{font-weight:600;line-height:1.35;overflow-wrap:anywhere}[data-app=tracesheet] .lw-video.is-feature .lw-video-title{font-family:var(--lw-serif);font-size:var(--t-h4)}[data-app=tracesheet] .lw-video:hover .lw-video-title{color:var(--lw-red-ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.2em}[data-app=tracesheet] .lw-video-list{display:grid;gap:32px 24px;margin:56px 0 0;padding:40px 0 0;list-style:none;border-top:1px solid var(--lw-rule)}@media (min-width:600px){[data-app=tracesheet] .lw-video-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:1000px){[data-app=tracesheet] .lw-video-list{grid-template-columns:repeat(3,minmax(0,1fr))}}[data-app=tracesheet] .lw-channel-card{position:relative;display:flex;flex-direction:column;justify-content:flex-end;aspect-ratio:16/9;padding:clamp(20px,3vw,36px);border-radius:6px;background:var(--lw-ink);color:var(--lw-paper);text-decoration:none;overflow:hidden}[data-app=tracesheet] .lw-channel-top{position:absolute;top:clamp(16px,2.5vw,28px);left:clamp(20px,3vw,36px);display:inline-flex;align-items:center;gap:8px;font-size:.9375rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase}[data-app=tracesheet] .lw-channel-dot{width:10px;height:10px;border-radius:50%;background:var(--lw-red)}[data-app=tracesheet] .lw-channel-name{position:relative;font-family:var(--lw-serif);font-size:clamp(2rem,1.5rem + 2.4vw,3.25rem);font-weight:600;line-height:1}[data-app=tracesheet] .lw-channel-handle{position:relative;margin-top:8px;color:var(--lw-trace)}[data-app=tracesheet] .lw-channel-cell{position:absolute;right:clamp(16px,3vw,36px);top:clamp(16px,2.5vw,28px);width:clamp(80px,13vw,140px);font-size:clamp(80px,13vw,140px)}[data-app=tracesheet] .lw-channel-line{display:flex;align-items:center;gap:12px;margin:20px 0 0;font-weight:600}[data-app=tracesheet] .lw-channel-line-cell{width:36px;font-size:36px;flex:none}[data-app=tracesheet] .lw-channel-line-handle{font-weight:400;color:var(--lw-ink-soft)}[data-app=tracesheet] .lw-videos-act{display:flex;flex-wrap:wrap;align-items:center;gap:0 28px}[data-app=tracesheet] .lw-videos-act .lw-arrow-link,[data-app=tracesheet] .lw-videos-act .lw-btn{margin-top:1.25rem}@media (max-width:899px){[data-app=tracesheet] .lw-videos-text{order:-1}}@media (min-width:900px){[data-app=tracesheet] .lw-videos-grid{grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:64px}}[data-app=tracesheet] .lw-faq-grid{display:grid;gap:8px}@media (min-width:960px){[data-app=tracesheet] .lw-faq-grid{grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:64px;align-items:start}}[data-app=tracesheet] .lw-faq-list{border-top:2px solid var(--lw-ink)}[data-app=tracesheet] .lw-q{border-bottom:1px solid var(--lw-rule)}[data-app=tracesheet] .lw-q summary{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 0;min-height:44px;cursor:pointer;list-style:none;font-family:var(--lw-serif);font-size:1.25rem;font-weight:600;line-height:1.35}[data-app=tracesheet] .lw-q summary::-webkit-details-marker{display:none}[data-app=tracesheet] .lw-q summary:hover{color:var(--lw-red-ink)}[data-app=tracesheet] .lw-plus{position:relative;flex:none;width:18px;height:18px}[data-app=tracesheet] .lw-plus:after,[data-app=tracesheet] .lw-plus:before{content:"";position:absolute;background:var(--lw-red);left:0;top:8px;width:18px;height:2px;transition:transform .2s ease}[data-app=tracesheet] .lw-plus:after{transform:rotate(90deg)}[data-app=tracesheet] .lw-q[open] .lw-plus:after{transform:rotate(0deg)}[data-app=tracesheet] .lw-q p{margin:0 0 22px;max-width:40em;color:var(--lw-ink-soft)}[data-app=tracesheet] .lw-foot{border-top:2px solid var(--lw-ink);background:var(--lw-paper-deep);margin-top:var(--section)}[data-app=tracesheet] .lw-body:has(.lw-landing)+.lw-foot,[data-app=tracesheet] .lw-landing+.lw-foot{margin-top:0}[data-app=tracesheet] .lw-foot-in{max-width:calc(var(--max) + 2 * var(--gutter));margin:0 auto;padding:56px var(--gutter) 32px;box-sizing:border-box;display:grid;gap:40px}[data-app=tracesheet] .lw-foot-name{font-family:var(--lw-serif);font-size:1.75rem;font-weight:600;margin:12px 0 0}[data-app=tracesheet] .lw-foot-line{margin:6px 0 0;color:var(--lw-ink-soft);max-width:24em}[data-app=tracesheet] .lw-foot-cols{display:grid;grid-template-columns:1fr;gap:8px 40px}[data-app=tracesheet] .lw-foot-cols ul{list-style:none;margin:0;padding:0}[data-app=tracesheet] .lw-foot-cols a{display:inline-flex;align-items:center;gap:6px;min-height:44px;text-decoration:none;overflow-wrap:anywhere}[data-app=tracesheet] .lw-foot-cols a:hover{color:var(--lw-red-ink);text-decoration:underline;text-underline-offset:.3em}[data-app=tracesheet] .lw-foot-last{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;padding-top:20px;border-top:1px solid var(--lw-rule);font-size:var(--t-small);color:var(--lw-ink-soft)}@media (min-width:640px){[data-app=tracesheet] .lw-foot-cols{grid-template-columns:1fr 1fr}}@media (min-width:960px){[data-app=tracesheet] .lw-foot-in{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}[data-app=tracesheet] .lw-foot-last{grid-column:1/-1}}[data-app=tracesheet] .lw-page{padding-top:clamp(32px,5vw,64px)}[data-app=tracesheet] .lw-page-h1{font-size:clamp(2.25rem,1.5rem + 3vw,3.75rem);margin-top:.5rem}[data-app=tracesheet]:lang(zh) .lw-page-h1{font-size:clamp(2rem,1.4rem + 2.4vw,3.25rem)}[data-app=tracesheet] .lw-page>.lw-contents{margin-top:48px}[data-app=tracesheet] .lw-crumbs{display:flex;flex-wrap:wrap;gap:4px 10px;font-size:var(--t-small);color:var(--lw-ink-soft);margin-bottom:24px}[data-app=tracesheet] .lw-crumbs a{color:var(--lw-red-ink);text-underline-offset:.2em}[data-app=tracesheet] .lw-crumbs [aria-current]{overflow-wrap:anywhere}[data-app=tracesheet] .lw-article{max-width:calc(64rem + 2 * var(--gutter))}[data-app=tracesheet] .lw-article-head{max-width:46rem}[data-app=tracesheet] .lw-updated{margin:1.25rem 0 0;font-size:var(--t-small);color:var(--lw-ink-soft)}[data-app=tracesheet] .lw-steps{list-style:none;margin:48px 0 0;padding:0;border-top:2px solid var(--lw-ink)}[data-app=tracesheet] .lw-step{display:grid;grid-template-columns:48px minmax(0,1fr);gap:8px 20px;padding:36px 0;border-bottom:1px solid var(--lw-rule)}[data-app=tracesheet] .lw-step-num{position:relative;display:grid;place-items:center;width:48px;height:48px;font-family:var(--lw-serif);font-size:1.5rem;font-weight:600;color:var(--lw-red-ink)}[data-app=tracesheet] .lw-step-num .lw-cell{position:absolute;inset:0;width:48px}[data-app=tracesheet] .lw-step-num .lw-cell-cross{opacity:.35}[data-app=tracesheet] .lw-step-num>span:last-child{position:relative;background:var(--lw-paper);padding:0 3px;line-height:1}[data-app=tracesheet] .lw-step-text .lw-h3{font-size:clamp(1.375rem,1.2rem + .7vw,1.75rem);padding-top:6px}[data-app=tracesheet] .lw-step-text .lw-dashes{margin-top:.875rem}[data-app=tracesheet] .lw-figure{grid-column:2;margin:16px 0 0;width:min(100%,300px)}[data-app=tracesheet] .lw-figure.is-ipad{width:min(100%,420px)}[data-app=tracesheet] .lw-figure figcaption{margin-top:10px;font-size:var(--t-small);color:var(--lw-ink-soft)}@media (min-width:900px){[data-app=tracesheet] .lw-step.has-figure{grid-template-columns:56px minmax(0,1fr) 300px;gap:8px 40px}[data-app=tracesheet] .lw-step{grid-template-columns:56px minmax(0,1fr);gap:8px 40px}[data-app=tracesheet] .lw-step.has-figure .lw-figure{grid-column:3;grid-row:1;margin:0}}[data-app=tracesheet] .lw-tips{margin-top:48px;padding:28px clamp(20px,3vw,32px);background:var(--lw-card);border:1px solid var(--lw-rule);border-left:4px solid var(--lw-red)}[data-app=tracesheet] .lw-getapp{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px 20px;align-items:center;margin-top:48px;padding:28px 0;border-top:2px solid var(--lw-ink);border-bottom:1px solid var(--lw-rule)}[data-app=tracesheet] .lw-getapp p{margin:4px 0 0;color:var(--lw-ink-soft)}[data-app=tracesheet] .lw-getapp-cell{width:56px;font-size:56px}[data-app=tracesheet] .lw-getapp-cell .lw-cell-glyph{color:var(--lw-ink)}[data-app=tracesheet] .lw-getapp .lw-badge{grid-column:1/-1}@media (min-width:700px){[data-app=tracesheet] .lw-getapp{grid-template-columns:auto minmax(0,1fr) auto}[data-app=tracesheet] .lw-getapp .lw-badge{grid-column:auto}}[data-app=tracesheet] .lw-help a{color:var(--lw-red-ink)}[data-app=tracesheet] .lw-pager{display:grid;gap:16px;margin-top:40px}[data-app=tracesheet] .lw-pager-link{display:flex;flex-direction:column;gap:4px;padding:18px 20px;border:1px solid var(--lw-rule);background:var(--lw-card);text-decoration:none}[data-app=tracesheet] .lw-pager-link:hover{border-color:var(--lw-red)}[data-app=tracesheet] .lw-pager-link.is-next{text-align:right}[data-app=tracesheet] .lw-pager-dir{font-size:var(--t-small);color:var(--lw-red-ink);font-weight:600}[data-app=tracesheet] .lw-pager-title{font-family:var(--lw-serif);font-size:1.1875rem;font-weight:600;line-height:1.3}@media (min-width:700px){[data-app=tracesheet] .lw-pager{grid-template-columns:1fr 1fr}}[data-app=tracesheet] .lw-mail{background:var(--lw-red-ink);overflow-wrap:anywhere}[data-app=tracesheet] .lw-mail:hover{background:var(--lw-ink)}[data-app=tracesheet] .lw-support-cols{display:grid;gap:32px;margin-top:56px;padding-top:32px;border-top:2px solid var(--lw-ink)}@media (min-width:760px){[data-app=tracesheet] .lw-support-cols{grid-template-columns:repeat(3,minmax(0,1fr))}}[data-app=tracesheet] .lw-support-block{margin-top:72px}[data-app=tracesheet] .lw-support-block .lw-contents,[data-app=tracesheet] .lw-support-block .lw-faq-list{margin-top:28px}[data-app=tracesheet] .lw-body>main.mx-auto{padding-left:var(--gutter);padding-right:var(--gutter);box-sizing:border-box;max-width:calc(46rem + 2 * var(--gutter))}[data-app=tracesheet] .lw-body>main.mx-auto h1{font-weight:600;font-size:clamp(2.25rem,1.5rem + 3vw,3.5rem);line-height:1.1}[data-app=tracesheet] .lw-body>main.mx-auto h2{font-weight:600}[data-app=tracesheet] .lw-body>main.mx-auto .spec-label{color:var(--lw-red-ink)}@media (prefers-reduced-motion:reduce){[data-app=tracesheet] *,[data-app=tracesheet] :after,[data-app=tracesheet] :before{transition:none!important;animation:none!important}}