.sf-app{--sf-paper:#ece3d0;--sf-paper-2:#e3d8c0;--sf-edge:#d4c6a8;--sf-ink:#2b2620;--sf-ink-mid:#5e5548;--sf-ink-soft:#6f6552;--sf-rule:#c6b896;--sf-rule-soft:#d8ccae;--sf-marsh:#45563a;--sf-marsh-2:#6d7e54;--sf-rust:#ab5530;--sf-ochre:#bf8a3c;--sf-tide:#5d7d7a;--sf-coastal:#6ca2aa;--sf-fern:#75b892;--sf-cream:#f6f0e1;--sf-surface:#fff9ea;--sf-maroon:#660000;--sf-gold:#bfa87c;--sf-btn-text:#f3ead7;--sf-serif:var(--font-sf-serif),Georgia,serif;--sf-sans:var(--font-sf-sans),ui-sans-serif,system-ui,sans-serif;--sf-mono:var(--font-sf-mono),ui-monospace,monospace;--sf-shadow-card:0 1px 2px rgba(40,33,22,0.1),0 18px 40px -16px rgba(40,33,22,0.45);--sf-shadow-panel:inset 0 1px 0 rgba(255,255,255,0.55),0 1px 3px rgba(40,33,22,0.12);position:relative;display:flex;min-height:100vh;flex-direction:column;color:var(--sf-ink);font-family:var(--sf-sans);background:radial-gradient(140% 120% at 78% -10%,#f4ecda 0,var(--sf-paper) 46%,var(--sf-paper-2) 100%);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.sf-app:before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;background-image:radial-gradient(rgba(120,100,60,.05) 1px,transparent 1.4px);background-size:4px 4px}.sf-app>*{position:relative;z-index:1}.sf-app ::-moz-selection{background:#bf8a3c44}.sf-app ::selection{background:#bf8a3c44}.sf-demo-notice{min-height:39px;margin:0;padding:9px 16px;background:#fff4cc;color:#403000;font-size:14px;line-height:21px;text-align:center}.sf-demo-notice[data-audience=faculty]{background:#e7f0f6;color:#17313f}.sf-demo-notice-back{color:inherit;font-weight:600;text-underline-offset:2px;white-space:nowrap}.sf-app button{cursor:pointer}.sf-app button,.sf-app input{font-family:inherit}.sf-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.sf-eyebrow{font-family:var(--sf-mono);font-size:13.5px;letter-spacing:normal}.sf-app input::-moz-placeholder,.sf-app textarea::-moz-placeholder{color:var(--sf-ink-soft);opacity:1}.sf-app input::placeholder,.sf-app textarea::placeholder{color:var(--sf-ink-soft);opacity:1}.sf-chip-sample{display:inline-block;border:1px dashed var(--sf-rule);border-radius:4px;padding:2px 7px;color:var(--sf-ink-soft);font-family:var(--sf-mono);font-size:8.5px;letter-spacing:.1em;text-transform:uppercase}.sf-btn{border:none;border-radius:9px;padding:11px;font-size:14px;transition:transform .15s ease,box-shadow .15s ease}.sf-btn:hover:not(:disabled){transform:translateY(-1px)}.sf-btn--marsh{background:var(--sf-marsh);color:var(--sf-btn-text);box-shadow:0 8px 18px -10px rgba(69,86,58,.9)}.sf-btn--ink{background:var(--sf-ink);color:var(--sf-btn-text);box-shadow:0 8px 18px -10px rgba(40,33,22,.7)}.sf-brand{display:flex;align-items:center;gap:10px}.sf-brand-pin{position:relative;display:grid;place-items:center;width:26px;height:26px;border:1.5px solid var(--sf-ink);border-radius:50%;background:var(--sf-cream)}.sf-brand-pin span{width:9px;height:9px;border-radius:50%;background:var(--sf-marsh);box-shadow:0 0 0 3px var(--sf-cream),0 0 0 4px var(--sf-marsh-2)}.sf-brand-pin--lg{width:30px;height:30px}.sf-brand-pin--lg span{width:10px;height:10px}.sf-brand-name{font-family:var(--sf-serif);font-size:19px;font-weight:600}.sf-brand-name--lg{font-size:21px}.sf-entry-main{display:grid;flex:1;place-items:center;padding:40px 20px}.sf-entry-card{width:min(440px,100%);border:1px solid var(--sf-edge);border-radius:16px;background:var(--sf-surface);box-shadow:var(--sf-shadow-card);padding:38px 34px 30px}.sf-entry-card .sf-brand{gap:11px;margin-bottom:26px}.sf-entry-h{margin:0 0 8px;font-family:var(--sf-serif);font-size:25px;font-weight:500;line-height:1.22}.sf-entry-sub{margin:0 0 22px;color:var(--sf-ink-mid);font-size:14.5px;line-height:1.5}.sf-entry-label{display:block;margin-bottom:7px;color:var(--sf-ink-mid)}.sf-entry-input{width:100%;border:1px solid var(--sf-edge);border-radius:9px;padding:13px 14px;background:var(--sf-cream);color:var(--sf-ink);font-family:var(--sf-mono);font-size:15px;letter-spacing:.04em;outline:none}.sf-entry-input:focus{border-color:var(--sf-marsh);box-shadow:0 0 0 2px #45563a22}.sf-entry-btn{width:100%;margin-top:20px;border-radius:10px;padding:13px;font-size:15px}.sf-entry-btn:disabled{opacity:.45;cursor:not-allowed}.sf-entry-faculty-link{display:block;width:-moz-fit-content;width:fit-content;margin:14px auto 0;color:var(--sf-ink-mid);font-size:13px}.sf-entry-faculty-link:focus-visible{outline:2px solid var(--sf-marsh);outline-offset:3px}.sf-topbar{position:sticky;top:0;z-index:40;height:60px;padding:0 22px;border-bottom:1px solid var(--sf-edge);background:linear-gradient(180deg,#efe7d5,#e7dcc4);box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 6px 18px -14px rgba(40,33,22,.5)}.sf-main-nav,.sf-topbar{display:flex;align-items:center;gap:18px}.sf-main-nav{min-width:0;flex:1 1 auto}.sf-main-nav>a{display:inline-flex;min-height:44px;align-items:center;color:var(--sf-ink-mid);font-size:13px;text-decoration:none;white-space:nowrap}.sf-brand-link+a{margin-left:auto}.sf-main-nav>a[aria-current=page]{color:var(--sf-ink);text-decoration:underline;text-decoration-color:var(--sf-marsh);text-decoration-thickness:2px;text-underline-offset:7px}.sf-main-nav>a:hover{color:var(--sf-ink)}.sf-main-nav>a:focus-visible{outline:2px solid var(--sf-marsh);outline-offset:3px}.sf-brand-link{color:inherit}.sf-crumbs{display:flex;align-items:center;gap:9px;color:var(--sf-ink-mid);font-size:13.5px}.sf-crumbs a{color:var(--sf-ink-mid);text-decoration:none}.sf-crumbs a:hover,.sf-crumbs b{color:var(--sf-ink)}.sf-crumbs b{font-weight:600}.sf-crumb-dot{width:4px;height:4px;border-radius:50%;background:var(--sf-rule)}.sf-main{width:100%;max-width:1120px;margin:0 auto;padding:34px 26px 60px}.sf-assign-band{display:flex;flex-wrap:wrap;align-items:flex-start;gap:22px;border:1px solid var(--sf-edge);border-radius:14px;background:var(--sf-surface);box-shadow:var(--sf-shadow-panel);padding:24px 26px}.sf-assign-body{flex:1;min-width:280px}.sf-assign-eyebrow{margin:0 0 10px;color:var(--sf-ochre)}.sf-assign-h{max-width:56ch;margin:0 0 12px;font-family:var(--sf-serif);font-size:26px;font-weight:500;line-height:1.32}.sf-assign-h em{color:var(--sf-marsh);font-style:italic}.sf-assign-h b{font-weight:600}.sf-assign-sub{max-width:60ch;margin:0;color:var(--sf-ink-mid);font-size:14px;line-height:1.5}.sf-handoff{display:flex;flex:0 0 auto;flex-direction:column;gap:7px;align-self:flex-start;min-width:172px;border:1px solid var(--sf-edge);border-radius:10px;background:var(--sf-surface);box-shadow:var(--sf-shadow-panel);padding:12px 14px}.sf-handoff-eyebrow{color:var(--sf-ink-soft);font-family:var(--sf-mono);font-size:13px;letter-spacing:normal}.sf-handoff-text{color:var(--sf-ink-mid);font-size:13.5px;line-height:1.4}.sf-handoff-text b{color:var(--sf-ink);font-weight:600}.sf-section-h{display:flex;align-items:center;gap:9px;margin:0 0 14px;color:var(--sf-ink-mid);font-family:var(--sf-serif);font-size:18px;font-weight:600;letter-spacing:normal}.sf-section-h .sf-hairline{flex:1;height:1px;background:var(--sf-rule-soft)}.sf-slots{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));align-items:stretch;gap:20px}.sf-slot{display:flex;flex-direction:column;height:100%;border:1px solid var(--sf-edge);border-radius:14px;background:var(--sf-surface);box-shadow:var(--sf-shadow-card);padding:20px 20px 22px}.sf-slot-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.sf-slot-no{border:1px solid var(--sf-rule);border-radius:999px;padding:3px 10px;color:var(--sf-ink-soft);font-family:var(--sf-mono);font-size:13px;letter-spacing:normal}.sf-slot-status{display:inline-flex;align-items:center;gap:6px;font-family:var(--sf-mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase}.sf-slot-status--live{color:var(--sf-marsh)}.sf-slot-status--empty{color:var(--sf-ink-soft)}.sf-slot-status-dot{width:7px;height:7px;border-radius:50%}.sf-slot-status--live .sf-slot-status-dot{background:var(--sf-marsh-2)}.sf-slot-status--empty .sf-slot-status-dot{background:var(--sf-rule)}.sf-slot-inner{display:flex;align-items:flex-start;gap:18px}.sf-organism-name{margin:0 0 2px;font-family:var(--sf-serif);font-size:22px;font-weight:600;line-height:1.1}.sf-organism-latin{margin:0 0 4px;color:var(--sf-ink-mid);font-family:var(--sf-serif);font-size:14px;font-style:italic}.sf-organism-chip-row{margin:0 0 13px}.sf-steps{display:flex;flex-direction:column;gap:6px}.sf-step{display:flex;align-items:center;gap:9px;font-size:12.5px}.sf-step-pin{flex:0 0 auto;width:11px;height:11px;border-radius:50%}.sf-step--done{color:var(--sf-ink)}.sf-step--done .sf-step-pin{border:1.5px solid var(--sf-marsh);background:var(--sf-marsh-2)}.sf-step--done .sf-step-name{flex:1;font-weight:500}.sf-step--now{color:var(--sf-ink)}.sf-step--now .sf-step-pin{border:1.5px solid var(--sf-rust);background:var(--sf-rust);box-shadow:0 0 0 3px rgba(171,85,48,.2)}.sf-step--now .sf-step-name{flex:1;font-weight:600}.sf-step--todo{color:var(--sf-ink-soft)}.sf-step--todo .sf-step-pin{border:1.5px solid var(--sf-rule);background:transparent}.sf-step--todo .sf-step-name{flex:1}.sf-step-tag{font-family:var(--sf-mono);font-size:8.5px;letter-spacing:.08em;text-transform:uppercase}.sf-step--empty,.sf-step-tag{color:var(--sf-ink-soft)}.sf-step--empty .sf-step-pin{border:1.5px dashed var(--sf-rust);background:transparent}.sf-step--empty .sf-step-name{flex:1}.sf-step--empty .sf-step-tag{color:var(--sf-rust)}.sf-steps-more{display:flex;flex-direction:column;gap:6px}.sf-steps-more-summary{cursor:pointer;color:var(--sf-ink-soft);font-family:var(--sf-mono);font-size:13px;letter-spacing:normal}.sf-steps-more-summary:focus-visible{outline:2px solid var(--sf-maroon);outline-offset:2px}.sf-slot-foot{margin-top:auto;padding-top:16px}.sf-resume{display:flex;align-items:center;gap:10px;border:1px solid var(--sf-edge);border-radius:9px;background:var(--sf-cream);box-shadow:var(--sf-shadow-panel);padding:10px 12px}.sf-resume-arrow{display:grid;flex:0 0 auto;place-items:center;width:22px;height:22px;border-radius:6px;background:var(--sf-rust);color:var(--sf-btn-text);font-size:12px}.sf-resume-lines{min-width:0;line-height:1.3}.sf-resume-eyebrow{display:block;color:var(--sf-ink-soft);font-family:var(--sf-mono);font-size:12.5px;letter-spacing:normal}.sf-resume-step{display:block;color:var(--sf-ink);font-family:var(--sf-serif);font-size:14px}.sf-resume-saved{margin-left:auto;color:var(--sf-ink-soft);font-family:var(--sf-mono);font-size:8.5px;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}.sf-slot-cta{display:block;width:100%;margin-top:12px;text-align:center;text-decoration:none}.sf-slot-empty{display:flex;flex-direction:column;align-items:center;gap:14px;padding:20px 8px 8px;text-align:center}.sf-slot-empty-title{margin:0;color:var(--sf-ink-mid);font-family:var(--sf-serif);font-size:19px;font-weight:500}.sf-slot-empty .sf-btn{width:100%;max-width:280px;padding:12px}.sf-slot-hint{display:flex;align-items:center;gap:8px;margin-top:auto;padding-top:14px;border-top:1px solid var(--sf-rule-soft)}.sf-slot-hint-text{color:var(--sf-ink-soft);font-size:12px;line-height:1.35}.sf-specimen{position:relative;flex:0 0 auto;overflow:hidden;border:1px solid var(--sf-edge);border-radius:6px;background:linear-gradient(160deg,#e9f0ea,#d3e0dc 60%,#c2d3cf);box-shadow:var(--sf-shadow-card)}.sf-specimen-inset{position:absolute;inset:8px;border:1px solid rgba(69,86,58,.35);border-radius:3px}.sf-specimen-art{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);font-size:40px;line-height:1}.sf-specimen-caption{position:absolute;left:0;right:0;bottom:0;padding:6px 8px;background:linear-gradient(0deg,rgba(246,240,225,.95),transparent);color:var(--sf-marsh);font-family:var(--sf-serif);font-size:10.5px;font-style:italic}.sf-specimen--empty{display:grid;place-items:center;overflow:visible;border:1.5px dashed var(--sf-rule);background:repeating-linear-gradient(0deg,transparent 0 17px,rgba(120,100,60,.08) 17px 18px),var(--sf-surface);box-shadow:none;color:var(--sf-ink-soft)}.sf-specimen-plus{display:grid;place-items:center;width:40px;height:40px;border:1.5px dashed var(--sf-rule);border-radius:50%;color:var(--sf-ink-soft);font-size:22px;line-height:1}.sf-trail-head{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin:0 0 12px}.sf-trail-head .sf-section-h{margin:0;white-space:nowrap}.sf-trail-head .sf-hairline{flex:1;min-width:20px;height:1px;background:var(--sf-rule-soft)}.sf-trail-legend{display:flex;flex-wrap:wrap;gap:16px}.sf-trail-legend span{display:inline-flex;align-items:center;gap:8px;color:var(--sf-ink-mid);font-family:var(--sf-mono);font-size:12.5px;letter-spacing:normal}.sf-legend-dot{flex:0 0 auto;width:10px;height:10px;border-radius:50%}.sf-trail-position{margin:6px 0 10px;color:var(--sf-ink-soft);font-size:13px}.sf-trail-panel{position:relative;border:1px solid var(--sf-edge);border-radius:14px;background:linear-gradient(180deg,#fffaec,#f7f0df);box-shadow:var(--sf-shadow-panel);padding:16px 20px 12px}.sf-trail-scroll{overflow-x:auto}.sf-trail-scroll svg{display:block;width:100%;min-width:720px;height:auto;overflow:visible}.sf-choose{display:grid;grid-template-columns:minmax(230px,280px) minmax(0,1fr) minmax(250px,320px);align-items:start;gap:22px;width:100%;max-width:1240px;margin:0 auto;padding:28px 24px 48px}.sf-panel{border:1px solid var(--sf-edge);border-radius:14px;background:var(--sf-surface);box-shadow:var(--sf-shadow-panel);padding:18px 18px 20px}.sf-panel-h{margin:0 0 14px;color:var(--sf-ink-mid);font-family:var(--sf-mono);font-size:16px;font-weight:600;letter-spacing:normal}.sf-claim-panel{position:sticky;top:80px}.sf-claim-panel .sf-panel-h{margin-bottom:4px}.sf-claim-chip-row{margin:0 0 14px}.sf-claims{display:flex;flex-direction:column;gap:9px;margin:0;padding:0;list-style:none}.sf-claim{position:relative;display:flex;align-items:flex-start;gap:9px;border:1px solid var(--sf-edge);border-radius:8px;background:var(--sf-cream);box-shadow:var(--sf-shadow-panel);padding:9px 12px 9px 10px}.sf-claim-pin{flex:0 0 auto;width:9px;height:9px;margin-top:3px;border-radius:50%;background:var(--sf-coastal);box-shadow:0 0 0 3px rgba(108,162,170,.22)}.sf-claim-common{font-size:15px;font-weight:600;line-height:1.15}.sf-claim-common,.sf-claim-latin{display:block;font-family:var(--sf-serif)}.sf-claim-latin{color:var(--sf-ink-mid);font-size:12px;font-style:italic}.sf-conv{display:flex;flex-direction:column;min-height:560px;border:1px solid var(--sf-edge);border-radius:14px;background:var(--sf-surface);box-shadow:var(--sf-shadow-card);padding:18px 18px 16px}.sf-conv-head{display:flex;align-items:center;gap:10px;margin-bottom:4px;padding-bottom:12px;border-bottom:1px solid var(--sf-rule-soft)}.sf-guide-avatar{display:grid;flex:0 0 auto;place-items:center;width:30px;height:30px;border-radius:50%;background:radial-gradient(circle at 38% 34%,#8fb7bd,#5d7d7a);box-shadow:0 0 0 3px rgba(93,125,122,.18);font-size:15px}.sf-conv-title{margin:0;font-family:var(--sf-serif);font-size:16px;font-weight:600;line-height:1.1}.sf-conv-sub{margin:1px 0 0;color:var(--sf-ink-mid);font-size:12px}.sf-conv-log{flex:1;gap:12px;min-height:200px;overflow-y:auto;padding:16px 2px}.sf-conv-log,.sf-msg{display:flex;flex-direction:column}.sf-msg{gap:5px;max-width:82%;animation:sfRiseIn .32s ease both}.sf-msg--guide{align-self:flex-start;align-items:flex-start}.sf-msg--student{align-self:flex-end;align-items:flex-end}.sf-msg-who{font-family:var(--sf-mono);font-size:13px;letter-spacing:normal}.sf-msg--guide .sf-msg-who{color:var(--sf-tide)}.sf-msg--student .sf-msg-who{color:var(--sf-ink-soft)}.sf-msg-bubble{border:1px solid var(--sf-edge);box-shadow:var(--sf-shadow-panel);padding:11px 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rgba(63,98,78,0)}}.sf-research-status{margin:0;padding:0 16px 12px;color:var(--sf-ink-mid);font-size:13px;line-height:1.45}.sf-research-toggle{width:100%;border:0;border-top:1px solid #d4ddcc;background:transparent;padding:10px 16px;color:var(--sf-marsh);cursor:pointer;font-family:var(--sf-mono);font-size:13px;letter-spacing:normal;text-align:left}.sf-research-toggle:hover{background:rgba(184,197,177,.22)}.sf-research-events{display:grid;gap:0;max-height:300px;margin:0;overflow-y:auto;overscroll-behavior:contain;padding:0 16px 10px;list-style:none}.sf-research-event{display:flex;align-items:baseline;justify-content:space-between;gap:8px;border-top:1px solid #dce1d5;padding:9px 0}.sf-research-event time{flex:0 0 auto;color:var(--sf-ink-soft);font-family:var(--sf-mono);font-size:10px}.sf-research-event small,.sf-research-event strong{display:block}.sf-research-event strong{color:var(--sf-ink);font-size:12px;font-weight:600}.sf-research-event 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