.research{--lesson-paper:#fff;--lesson-soft:#edf2e7;--lesson-dark:#253f2c;--lesson-ink:#20271f;--lesson-muted:#626c5f;--lesson-line:#d8dfd2;padding-bottom:70px}.research button,.research textarea{font:inherit}.research button{cursor:pointer}.research [hidden]{display:none!important}.lesson-intro{color:var(--lesson-muted);justify-content:space-between;gap:20px;padding:30px 0;font-size:12px;display:flex}.lesson-intro>span{letter-spacing:.08em;font-family:IBM Plex Mono,monospace;font-size:10px}.lesson-heading{justify-content:space-between;align-items:center;gap:30px;padding:18px 0 28px;display:flex}.lesson-heading h1{letter-spacing:-2.2px;margin:22px 0;font-size:clamp(36px,4.6vw,56px);line-height:1.14}.lesson-heading h1 em,.lesson-content h2 em{color:var(--green);font-family:Georgia,serif;font-weight:400}.lesson-heading p{color:var(--lesson-muted);margin:0;font-size:16px;line-height:1.8}.lesson-stamp{background:#e5ebdc;border-radius:2px;flex-direction:column;flex-shrink:0;justify-content:center;align-items:center;width:138px;height:160px;display:flex;transform:rotate(5deg)}.lesson-stamp strong{color:var(--green);font-family:Georgia,serif;font-size:76px;font-weight:400;line-height:1}.lesson-stamp span{letter-spacing:.1em;text-align:center;margin-top:8px;font-family:IBM Plex Mono,monospace;font-size:10px;line-height:1.7}.lesson-facts{color:var(--lesson-muted);border-bottom:1px solid var(--lesson-line);flex-wrap:wrap;gap:26px;padding:19px 0 24px;font-size:12px;display:flex}.lesson-facts span:before{content:"↗";color:var(--green);margin-right:8px}.lesson-workspace{grid-template-columns:220px minmax(0,1fr);gap:48px;padding-top:38px;display:grid}.lesson-sidebar{align-self:start;position:sticky;top:25px}.sidebar-label{letter-spacing:.09em;color:var(--lesson-muted);margin-bottom:16px;font-family:IBM Plex Mono,monospace;font-size:10px}.lesson-sidebar nav{flex-direction:column;gap:5px;width:100%;display:flex}.lesson-sidebar nav button{text-align:left;color:var(--lesson-muted);background:0 0;border:0;border-radius:5px;align-items:center;gap:12px;min-height:44px;padding:13px 12px;font-size:12px;display:flex}.lesson-sidebar nav button span{color:inherit;margin:0;font-family:IBM Plex Mono,monospace;font-size:10px;display:inline}.lesson-sidebar nav button[aria-current=step]{background:var(--lesson-dark);color:#fff}.lesson-sidebar nav button:not([aria-current]):hover{background:var(--lesson-soft)}.lesson-progress{color:var(--lesson-muted);margin-top:30px;font-size:11px}.lesson-progress progress{appearance:none;background:#e0e6d9;border:0;width:100%;height:4px;margin-top:10px;display:block}.lesson-progress progress::-webkit-progress-bar{background:#e0e6d9}.lesson-progress progress::-webkit-progress-value{background:var(--green)}.lesson-progress progress::-moz-progress-bar{background:var(--green)}.save-note{color:var(--lesson-muted);margin:21px 0 8px;font-size:11px;line-height:1.7}.research .text-action{color:var(--green);text-align:left;text-underline-offset:4px;background:0 0;border:0;padding:8px 0;font-size:13px;text-decoration:underline}.lesson-sidebar .text-action{font-size:11px}.lesson-content{min-width:0;max-width:780px}.step-kicker{letter-spacing:.07em;color:var(--green);margin:0 0 17px;font-family:IBM Plex Mono,monospace;font-size:10px}.lesson-content h2{letter-spacing:-1.3px;margin:0 0 20px;font-size:clamp(30px,3.5vw,42px);font-weight:500;line-height:1.17}.lesson-content h2:focus{outline:none}.step-lead{color:var(--lesson-muted);margin:0 0 24px;font-size:16px;line-height:1.8}.comparison{border:1px solid var(--lesson-line);background:var(--lesson-paper);border-radius:12px;margin:28px 0;overflow:hidden}.comparison-tabs{background:#f0f3eb;gap:5px;padding:8px;display:flex}.comparison-tabs button{color:var(--lesson-muted);background:0 0;border:0;border-radius:6px;flex:1;padding:10px 15px;font-size:12px}.comparison-tabs button[aria-pressed=true]{color:var(--lesson-dark);background:#fff;box-shadow:0 2px 6px #2030200b}#example-content{padding:25px}.paper-label{letter-spacing:.06em;color:var(--lesson-muted);font-family:IBM Plex Mono,monospace;font-size:10px;line-height:1.6;display:block}.comparison blockquote{color:var(--lesson-ink);margin:14px 0;font-family:Georgia,serif;font-size:25px;line-height:1.45}.example-arrow{color:var(--green);margin:10px 0;font-size:24px}.example-result{background:var(--lesson-soft);border-radius:6px;padding:18px}.example-result p{margin:9px 0 0;font-size:14px;line-height:1.75}.aha{background:#f5efda;border-radius:8px;gap:16px;margin:24px 0;padding:20px 22px;display:flex}.aha-mark{color:#514623;background:#e5d595;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:27px;height:27px;font-family:Georgia,serif;font-size:20px;display:flex}.aha strong{font-size:14px;font-weight:500}.aha p{color:#5e5949;margin:7px 0 0;font-size:13px;line-height:1.8}.micro-exercise{margin:30px 0}.lesson-content h3{letter-spacing:-.3px;margin:12px 0 15px;font-size:18px;font-weight:500;line-height:1.4}.answer{text-align:left;border:1px solid var(--lesson-line);width:100%;color:var(--lesson-ink);background:#fff;border-radius:7px;margin:8px 0;padding:14px 18px;line-height:1.6;display:block;font-size:14px!important}.answer:hover,.answer[aria-pressed=true]{border-color:var(--green);background:var(--lesson-soft)}#answer-feedback{color:var(--green);font-size:13px;line-height:1.7}#answer-feedback:empty{display:none}.step-actions{border-top:1px solid var(--lesson-line);justify-content:space-between;align-items:center;gap:20px;margin-top:30px;padding:24px 0 5px;display:flex}.step-actions>span{color:var(--lesson-muted);max-width:190px;font-size:12px;line-height:1.6}.lesson-primary{background:var(--lesson-dark);color:#fff;text-align:center;border:0;border-radius:7px;padding:14px 20px;line-height:1.6;display:inline-block;font-size:13px!important}.lesson-primary:hover{background:#34593e}.research textarea{width:100%;color:var(--lesson-ink);resize:vertical;background:#fff;border:1px solid #c9d3c2;border-radius:7px;min-height:70px;padding:15px;font-size:16px;line-height:1.65;display:block}.research textarea:focus-visible{outline:2px solid var(--green);outline-offset:3px}.research textarea::placeholder{color:#83897f}#brief-form{margin-top:23px}#brief-form label{margin:23px 0 10px;font-size:15px;font-weight:500;display:block}#brief-form label small{color:var(--lesson-muted);margin-top:5px;font-size:12px;font-weight:400;line-height:1.6;display:block}.prompt-card{background:#f0f3eb;border-radius:9px;margin:25px 0;padding:9px}.prompt-toolbar{justify-content:space-between;align-items:center;gap:12px;padding:5px 8px 13px;display:flex}.prompt-toolbar>span{color:var(--lesson-muted);letter-spacing:.03em;font-family:IBM Plex Mono,monospace;font-size:10px}.research .copy-button{color:var(--green);background:#fff;border:1px solid #c1ceba;border-radius:5px;flex-shrink:0;padding:9px 13px;font-size:12px;line-height:1.5}.copy-button:hover{background:var(--lesson-soft)}#main-prompt{border:0;min-height:370px;font-family:IBM Plex Mono,monospace;font-size:12px;line-height:1.8}.handoff{background:var(--lesson-dark);color:#fff;border-radius:9px;padding:24px}.handoff .paper-label{color:#bbcdb6}.handoff h3{margin-top:10px}.handoff p{color:#dee6d9;margin-bottom:20px;font-size:14px;line-height:1.8}.llm-links{flex-wrap:wrap;gap:10px;display:flex}.llm-links a{border:1px solid #8aa183;border-radius:5px;padding:10px 14px;font-size:13px}.llm-links a:hover{background:#385b3d}.handoff small{color:#c0ceba;margin-top:17px;font-size:11px;line-height:1.6;display:block}.rescue{border-top:1px solid var(--lesson-line);border-bottom:1px solid var(--lesson-line);margin:24px 0;padding:17px 0}.rescue summary{color:var(--green);cursor:pointer;font-size:14px;line-height:1.65}.rescue p,.save-result p{color:var(--lesson-muted);font-size:14px;line-height:1.8}.repair-text{white-space:pre-wrap;background:#eef2e8;border-radius:6px;margin:15px 0;padding:18px;font-family:IBM Plex Mono,monospace;font-size:12px;line-height:1.9}.assumption-card{text-align:left;color:#423c2c;background:#f6f0df;border:1px solid #ddcfa9;border-radius:10px;width:100%;padding:23px;display:block}.assumption-quote{margin:16px 0;font-family:Georgia,serif;font-size:25px;line-height:1.5;display:block}.assumption-hint{color:#706040;font-size:12px}.evidence-split{grid-template-columns:1fr 1fr;gap:12px;margin:14px 0;display:grid}.evidence-split>div{background:var(--lesson-soft);border-radius:7px;padding:18px}.evidence-split>div:last-child{background:#f2edfa}.evidence-split p{margin-bottom:0;font-size:13px;line-height:1.8}.audit{margin:30px 0}.audit-heading{justify-content:space-between;align-items:center;gap:15px;display:flex}.audit-heading h3{margin:0}.audit-heading>span{color:var(--green);font-family:monospace;font-size:16px}.audit>p{color:var(--lesson-muted);font-size:12px;line-height:1.75}.audit-item{border-bottom:1px solid var(--lesson-line);cursor:pointer;gap:15px;padding:17px 0;display:flex}.audit-item input{width:19px;height:19px;accent-color:var(--green);flex-shrink:0;margin:3px 0 0}.audit-item strong{font-size:14px;font-weight:500;line-height:1.5}.audit-item small{color:var(--lesson-muted);margin-top:5px;font-size:12px;line-height:1.7;display:block}.takeaway{background:var(--lesson-soft);border-radius:10px;padding:23px}.takeaway>div{border-bottom:1px solid #d1dac9;align-items:center;gap:25px;padding:13px 0;display:flex}.takeaway>div:last-child{border:0;padding-bottom:0}.takeaway b{color:var(--green);font-family:Georgia,serif;font-size:34px;font-weight:400}.takeaway p{margin:0;font-size:16px;line-height:1.5}.save-result{margin-top:30px}.download-row{flex-wrap:wrap;align-items:center;gap:15px;margin:25px 0;display:flex}.download-row>span{color:var(--lesson-muted);font-size:11px}.next-lesson{background:#f0f1ed;border-radius:7px;margin-bottom:25px;padding:23px}.next-lesson p{color:var(--lesson-muted);margin-bottom:0;font-size:13px;line-height:1.8}.lesson-notice{color:var(--green);font-size:13px;line-height:1.6}.lesson-notice:empty{display:none}.free-lesson{background:#e7eddf;border-radius:8px;justify-content:space-between;align-items:center;gap:25px;margin:25px 0 45px;padding:28px 32px;display:flex}.free-lesson h2{letter-spacing:-.6px;margin:13px 0 10px;font-size:25px;font-weight:500}.free-lesson p{color:var(--muted);margin:0;font-size:14px;line-height:1.7}.free-lesson>a{color:#fff;white-space:nowrap;background:#253f2c;border-radius:6px;padding:14px 20px;font-size:13px}@media (width<=850px){.lesson-workspace{grid-template-columns:180px minmax(0,1fr);gap:25px}.lesson-stamp{width:105px;height:138px}.lesson-sidebar nav button{gap:9px;padding-left:8px;font-size:11px}}@media (width<=650px){.lesson-heading{padding-top:5px}.lesson-heading h1{letter-spacing:-1.6px;font-size:36px}.lesson-heading p{font-size:14px}.lesson-stamp{display:none}.lesson-intro{gap:12px;padding:25px 0}.lesson-intro>span{text-align:right;font-size:9px}.lesson-facts{gap:12px 18px;font-size:11px}.lesson-workspace{grid-template-columns:1fr;gap:26px;padding-top:22px}.lesson-sidebar{position:static}.sidebar-label,.save-note,.lesson-sidebar .text-action{display:none}.lesson-sidebar nav{flex-flow:wrap;gap:4px}.lesson-sidebar nav button{flex:28%;gap:7px;padding:10px 8px;font-size:10px}.lesson-progress{align-items:center;gap:16px;margin-top:12px;display:flex}.lesson-progress progress{flex:1;margin:0}.lesson-progress span{white-space:nowrap}.lesson-content h2{font-size:32px}.step-lead{font-size:15px}.step-actions{flex-wrap:wrap}.step-actions>span{max-width:none}.step-actions .lesson-primary{margin-left:auto}.comparison-tabs button{padding:10px 8px;font-size:11px}#example-content{padding:20px}.comparison blockquote,.assumption-quote{font-size:23px}.aha{gap:12px;padding:18px}.aha strong{font-size:13px}.evidence-split{grid-template-columns:1fr}.prompt-toolbar{align-items:flex-start}.prompt-toolbar>span{font-size:9px}.research #main-prompt{font-size:13px}.free-lesson{flex-direction:column;align-items:flex-start;padding:24px}.research{padding-bottom:35px}.research .save-note{margin-bottom:0;display:block}.lesson-sidebar .text-action{margin-top:6px;display:block}}@media (prefers-reduced-motion:reduce){.research *{scroll-behavior:auto}}.compact-heading{max-width:850px;padding:18px 0 22px}.compact-heading h1{letter-spacing:-2px;margin:17px 0 22px;font-size:clamp(36px,4.8vw,58px);line-height:1.15}.compact-grid{grid-template-columns:minmax(0,740px) minmax(180px,1fr);gap:45px;display:grid}.compact-main{min-width:0}.compact-main h2{letter-spacing:-.7px;margin:26px 0 14px;font-size:25px;font-weight:500;line-height:1.3}.compact-example{padding:8px 25px 22px}.compact-example p{color:var(--lesson-muted);font-size:14px;line-height:1.8}.compact-aside{border-left:1px solid var(--lesson-line);align-self:start;margin-top:25px;padding:25px 0 0 22px;position:sticky;top:24px}.compact-aside h3{margin:15px 0;font-size:20px;font-weight:500;line-height:1.4}.compact-aside p{color:var(--lesson-muted);overflow-wrap:anywhere;font-size:12px;line-height:1.8}.course-flow{background:var(--lesson-soft);border-radius:8px;flex-direction:column;gap:10px;margin:24px 0;padding:18px;font-size:12px;display:flex}.course-flow b{color:var(--green);font-weight:400}.compact-main .audit-heading h2{margin:10px 0;font-size:21px}.compact-main .audit-heading>span{white-space:nowrap}.course-finish{background:var(--lesson-soft);border-radius:10px;margin-top:28px;padding:24px}.course-finish p{font-size:14px;line-height:1.8}.course-finish small{color:var(--lesson-muted);margin-top:14px;font-size:11px;line-height:1.7;display:block}.course-finish .repair-text{background:#fff}.compact-main #course-status{color:var(--green);font-size:13px;line-height:1.7}.compact-main #course-status:empty{display:none}.compact-main #course-prompt{border:0;min-height:280px;font-family:IBM Plex Mono,monospace;font-size:13px;line-height:1.8}.compact-main textarea:focus-visible{outline:2px solid var(--green)}@media (width<=760px){.compact-grid{grid-template-columns:1fr;gap:20px}.compact-aside{background:var(--lesson-soft);border:0;grid-row:1;margin:0;padding:16px 20px;position:static}.compact-aside h3{margin:8px 0;font-size:16px}.compact-aside .course-flow{display:none}.compact-aside #course-context{margin-bottom:4px}.compact-heading h1{letter-spacing:-1.5px;font-size:38px}.compact-main .aha{margin-top:0}.course-finish{padding:20px}}