.trainer-shell{max-width:1420px;margin:auto;padding:34px 36px 72px;color:var(--p-text,#eaf3ff);animation:portal-enter .25s ease both}.trainer-shell h1{font-size:clamp(30px,3.5vw,49px);font-weight:500;letter-spacing:-.045em}.trainer-shell h2{font-size:26px}.trainer-shell h3{font-size:18px;letter-spacing:-.02em}.trainer-header{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:30px}.trainer-header .portal-eyebrow{margin-bottom:12px}.trainer-header h1 small{color:#93a8c1;font-size:.6em}.trainer-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(340px,1fr);gap:32px;align-items:start}.trainer-media{min-width:0}.trainer-media .model-viewer-stage{height:420px;min-height:300px}.trainer-media .model-viewer-shell{border:1px solid #304762;border-radius:12px;overflow:hidden;background:#0e1d30;color:#eaf3ff}.trainer-media .model-viewer-shell button,.trainer-media .model-viewer-shell select{color:#dbefff;background:#152b42;border-color:#395471}.trainer-photos{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}.trainer-photo{margin:0;min-width:0;background:#101e30;border:1px solid #2e425a;border-radius:10px;overflow:hidden}.trainer-photo>a{display:block}.trainer-photo img{width:100%;height:190px;object-fit:contain;display:block;background:#0c1725}.trainer-photo figcaption{font-size:11px;line-height:1.6;padding:10px 12px;display:flex;flex-direction:column;gap:6px;color:#a7bad0}.trainer-photo figcaption>span{color:#b7dfff}.trainer-photo figcaption strong{color:#eaf3ff;font-weight:400;font-size:12px}.trainer-photo figcaption a{text-decoration:underline}.trainer-media-note,.trainer-note{color:#9eb2c8;font-size:13px;line-height:1.65;margin:15px 0}.trainer-photo-only{display:flex;gap:12px;align-items:center;padding:20px;border:1px solid #304762;border-radius:10px;color:#b7dfff}.trainer-photo__missing{display:grid;place-content:center;text-align:center;padding:25px;font-size:13px;color:#a7bad0;border:1px dashed #425870;border-radius:10px;min-height:160px}.trainer-questions{min-width:0}.trainer-questions label{display:block;font-size:21px;margin-bottom:16px}.trainer-questions input{width:100%;background:#0b1726;border:1px solid #56708b;border-radius:9px;color:#f0f7ff;padding:17px 18px;font-size:21px;margin-bottom:18px}.trainer-questions form .portal-primary{width:100%}.trainer-options{display:grid;gap:9px}.trainer-options button{text-align:left;padding:13px 16px;font-size:15px;line-height:1.5;border:1px solid #3b536d;background:#112035;border-radius:8px;min-height:48px;color:#edf5ff}.trainer-options button:hover:not(:disabled){border-color:#b5ddfb;background:#1c3550}.trainer-options button:disabled{opacity:1}.trainer-options button.is-correct{border-color:#7dceb0;background:#173a32;color:#bcf6df}.trainer-options button.is-wrong{border-color:#e998aa;background:#3e2432;color:#ffd5df}.trainer-exam-fields{display:grid;gap:22px}.trainer-exam-fields fieldset{border:1px solid #344b66;border-radius:12px;padding:19px 18px;margin:0;min-width:0}.trainer-exam-fields legend{font-size:20px;line-height:1.4;padding:0 8px;max-width:100%}.trainer-exam-fields .is-locked{opacity:.45}.trainer-exam-fields fieldset>p{margin:12px 0 0;font-size:13px}.trainer-exam-fields fieldset.is-correct>p{color:#9fe2c5}.trainer-exam-fields fieldset.is-wrong>p{color:#ffaabc}.trainer-next{position:sticky;bottom:0;z-index:8;display:flex;justify-content:space-between;gap:20px;align-items:center;background:#0b1726f5;border:1px solid #344b66;border-radius:12px;padding:16px 20px;margin-top:30px;box-shadow:0 -14px 35px #080e1966}.trainer-next>span{font-size:13px;color:#b2c4d7}.trainer-actions{display:flex;align-items:center;flex-wrap:wrap;gap:15px;margin:24px 0}.trainer-setup{max-width:850px;padding-top:40px;min-height:calc(100dvh - 180px)}.trainer-length{padding:22px;border:1px solid #3c536d;border-radius:12px;margin:32px 0}.trainer-length legend{padding:0 10px;font-size:18px}.trainer-length button,.trainer-periods button,.trainer-mode-tabs button{border:1px solid #49637c;border-radius:7px;padding:12px 18px;margin:5px;color:#d9ecff}.trainer-length button[aria-pressed=true],.trainer-periods button[aria-pressed=true],.trainer-mode-tabs button[aria-pressed=true]{background:#b7dfff;color:#0a1e32;border-color:#b7dfff}.trainer-clues{padding:32px;background:#101f32;border:1px solid #344e6a;border-radius:14px;min-height:360px}.trainer-clues>svg{color:#b7dfff;margin-bottom:22px}.trainer-clues>p{color:#b2c4d7;font-size:16px}.trainer-clues article{border-left:2px solid #97ceef;padding:5px 0 5px 17px;margin:24px 0}.trainer-clues article>span{font:11px Consolas,monospace;color:#93bfdf;text-transform:uppercase;letter-spacing:.1em}.trainer-clues article>p{font-size:20px;line-height:1.65;margin:10px 0}.trainer-verdict{border:1px solid #4d6c8d;padding:20px;border-radius:10px;margin-top:20px;color:#bbdfff}.trainer-verdict.is-wrong{border-color:#bd7c8b;color:#ffc1cf}.trainer-verdict.is-correct{border-color:#76b89f;color:#b7efd7}.trainer-explain{font-size:18px;line-height:1.75;color:#d4e1ef;margin-top:24px}.trainer-explain p,.trainer-explain li{line-height:1.75}.trainer-explain h4{font-size:20px;color:#b8ddfa}.trainer-explain ul{padding-left:22px}.trainer-explain details{font-size:14px;color:#a9bdd3;border-top:1px solid #304762;padding-top:15px}.trainer-explain summary{cursor:pointer}.trainer-sources{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0;font-size:12px;color:#b5cbe0}.trainer-sources>span{border:1px solid #3d5770;padding:6px 10px;border-radius:6px}.trainer-summary{padding:30px;background:#101f32;border:1px solid #344e6a;border-radius:14px;margin-bottom:28px}.trainer-summary h1{font-size:42px}.trainer-summary h1 span{color:#a6d9ff}.trainer-summary>p{font-size:15px;color:#a9bed5}.trainer-review-tabs{display:flex;flex-wrap:wrap;gap:9px;margin:24px 0}.trainer-review-tabs button{border:1px solid #405b76;border-radius:7px;padding:11px 14px;font-size:13px}.trainer-review-tabs .has-mistake{border-bottom:3px solid #e79aab}.trainer-review-tabs [aria-pressed=true]{background:#b5ddfc;color:#0b1c2f}.trainer-review-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:34px}.trainer-review-answer{background:#101f32;border:1px solid #324a64;border-radius:10px;padding:22px;margin-bottom:16px;font-size:16px;line-height:1.65}.trainer-review-answer.is-wrong{border-left:3px solid #e79aab}.trainer-review-answer.is-correct{border-left:3px solid #93dbb9}.trainer-correct-answer{display:flex;gap:10px;align-items:flex-start;color:#a5e4c8}.trainer-error{padding:20px;background:#3c2632;border:1px solid #d58c9d;border-radius:12px;margin-bottom:24px}.trainer-error p{color:#ffd1dc}.trainer-timer{display:flex;align-items:center;gap:12px;color:#bee6ff;font:28px Consolas,monospace;white-space:nowrap}.trainer-board .portal-primary{margin:20px 0}.trainer-board-scroll{overflow:auto;margin-top:25px;border:1px solid #304761;border-radius:10px}.trainer-board table{width:100%;border-collapse:collapse;font-size:16px;white-space:nowrap}.trainer-board th,.trainer-board td{text-align:left;padding:17px 18px;border-bottom:1px solid #304761}.trainer-board thead th{font-size:12px;color:#a7bdd4;background:#122238;font-weight:400}.trainer-board tbody th{font-weight:400;white-space:normal;min-width:150px;max-width:300px;overflow-wrap:anywhere}.trainer-board tr.is-mine{background:#203b51}.trainer-board tbody small{display:block;font-size:11px;color:#a6d9ff;margin-top:5px}.trainer-board-empty{padding:55px 20px;text-align:center;border:1px dashed #405b76;border-radius:12px;margin-top:25px}.trainer-board-empty>svg{color:#aedcfc;margin-bottom:18px}.trainer-board-empty p{color:#a6bcd3}.trainer-mode-tabs{margin:25px 0 15px}.trainer-mode-tabs button{font-size:16px}.portal-account-panel .secondary{background:#15283c!important;color:#e5f2ff!important;border:1px solid #6d89a5!important;box-shadow:none!important}.portal-account-panel .secondary:hover{background:#203d58!important;color:#fff!important}.portal-account-panel{color:#e8f1fc}.portal-account-panel .settings-section p,.portal-account-panel .account-email,.portal-account-panel .eyebrow{color:#a8bed5}.portal-root:has(.trainer-next) .portal-feedback-bar{bottom:96px}.portal-stats-details{margin-top:25px;border-top:1px solid #344b66;padding-top:20px;font-size:15px}.portal-stats-details summary{cursor:pointer;color:#b8ddfa}.portal-stats-details p{font-size:14px;color:#acc1d7}.portal-stats-details li{padding:9px 0;line-height:1.6}@media(max-width:1000px){.trainer-grid{gap:20px;grid-template-columns:minmax(0,1fr) minmax(300px,1fr)}.trainer-shell{padding:25px}.trainer-media .model-viewer-stage{height:350px}.trainer-photo img{height:150px}.trainer-exam-fields legend{font-size:18px}.trainer-options button{font-size:14px;padding:12px}}@media(max-width:740px){.trainer-shell{padding:24px 18px 40px}.trainer-header{align-items:flex-start;gap:14px;flex-wrap:wrap}.trainer-header h1{font-size:32px}.trainer-header .portal-outline{font-size:12px;padding:10px 12px}.trainer-grid,.trainer-review-grid{grid-template-columns:1fr}.trainer-media .model-viewer-stage{height:330px;min-height:260px}.trainer-photo img{height:165px}.trainer-questions h2{font-size:25px}.trainer-exam-fields legend{font-size:20px}.trainer-options button{font-size:16px;min-height:51px;padding:14px 15px}.trainer-exam-fields{gap:24px}.trainer-exam-fields fieldset{padding:18px 14px}.trainer-next{padding:12px;gap:12px;margin-top:20px}.trainer-next>.portal-primary{font-size:13px;padding:13px;gap:10px}.trainer-next>span{font-size:11px;max-width:90px}.trainer-clues{padding:25px}.trainer-clues article>p{font-size:20px}.trainer-length{padding:15px}.trainer-length button{padding:11px 15px;margin:4px}.trainer-summary{padding:24px 20px}.trainer-summary h1{font-size:34px}.trainer-review-answer{padding:20px}.trainer-timer{font-size:25px}.trainer-board th,.trainer-board td{padding:14px 12px;font-size:14px}.trainer-mode-tabs button{padding:13px;font-size:14px}.trainer-periods button{padding:10px 12px;margin:3px;font-size:13px}}@media(prefers-reduced-motion:reduce){.trainer-shell{animation:none}.trainer-options button{transition:none}}.trainer-media .model-loading{background:#0d1d30;color:#c6e6ff}.trainer-media .model-gesture,.trainer-media .model-provenance{color:#a7bdd3}.trainer-media .model-quality{display:none}.trainer-sources>a{padding:6px 10px;text-decoration:underline}@media(min-width:741px){.trainer-grid>:first-child{position:sticky;top:14px}.trainer-media .model-viewer-stage{height:clamp(240px,33vh,340px);min-height:240px}.trainer-media .trainer-photo img{height:clamp(105px,16vh,155px)}.trainer-media .model-gesture{display:none}.trainer-media .model-provenance{padding:8px 12px}.trainer-media .model-controls{padding:9px;gap:5px}.trainer-media .model-controls button{padding:7px 9px;min-height:34px}.trainer-grid>.trainer-media,.trainer-grid>div:first-child{align-self:start}}.admin-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:32px 0}.admin-metrics article{background:#101f32;border:1px solid #344e6a;border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:12px}.admin-metrics strong{font-size:38px;font-weight:400;color:#b6e0ff}.admin-metrics small,.admin-definition{font-size:13px;line-height:1.7;color:#a5bad1}.admin-definition{max-width:1000px}.admin-secondary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 30px;margin:30px 0}.admin-secondary p{display:flex;gap:18px;justify-content:space-between;border-bottom:1px solid #304762;padding:13px 0;font-size:15px}.admin-secondary strong{color:#b6e0ff;font-weight:400;white-space:nowrap}.admin-stats h2{margin-top:40px}.admin-stats table{width:100%;border-collapse:collapse}.admin-stats th,.admin-stats td{text-align:left;padding:15px;border-bottom:1px solid #304762}.admin-stats th{font-weight:400;color:#b3d6f4}.admin-stats .trainer-board-scroll{overflow:auto}@media(max-width:1000px){.admin-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){.admin-metrics{gap:10px}.admin-metrics article{padding:17px}.admin-metrics strong{font-size:33px}.admin-metrics span{font-size:14px}.admin-secondary{grid-template-columns:1fr}.admin-stats th,.admin-stats td{padding:11px;font-size:13px}}:root{font-family:Arial,Helvetica,sans-serif;color:#17382f;background:#faf9f6;font-synthesis:none;--bg:#faf9f6;--paper:#fffefa;--text:#17382f;--muted:#77827d;--line:#dedfd9;--orange:#ee7629;--soft:#fbecdd;--green-soft:#e7eee8;--error:#a63530;--success:#2f6847;--sidebar:230px}:root[data-theme=dark]{--bg:#171f1c;--paper:#1e2923;--text:#f0eee5;--muted:#a5b2a9;--line:#3a4840;--soft:#3e2d21;--green-soft:#2b3e31;--error:#f1a29a;--success:#a5d4b6;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button{cursor:pointer;color:inherit;background:none;border:0}button:disabled{cursor:default}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus,select:focus,textarea:focus{outline:2px solid var(--orange);outline-offset:3px}h1,h2,h3,h4,p{margin-top:0}p{line-height:1.6}h1,h2{font-family:Georgia,Times New Roman,serif;font-weight:700}h1{font-size:clamp(36px,3.8vw,57px);line-height:1.08;letter-spacing:-1.8px;margin:0 0 14px}h3{font-size:20px;line-height:1.3}h4{font-size:16px}svg{flex-shrink:0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.muted{color:var(--muted)}.fine-print{font-size:12px;color:var(--muted);line-height:1.6}.eyebrow{font-size:11px;letter-spacing:1.3px;text-transform:uppercase;color:var(--muted);font-weight:600;line-height:1.5;margin-bottom:14px}.sidebar{width:var(--sidebar);position:fixed;inset:0 auto 0 0;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:28px 14px 22px;background:var(--bg);z-index:20}.brand{display:flex;align-items:flex-start;flex-direction:column;padding:0 18px;margin-bottom:52px}.brand:hover{text-decoration:none}.brand>svg{margin-bottom:18px}.brand>span{font-family:Georgia,serif;font-size:26px;font-weight:700;line-height:1.03;letter-spacing:-.5px}.brand small{color:var(--muted);font-size:15px;margin-top:14px;line-height:1.5}.sidebar nav{display:flex;flex-direction:column;gap:8px}.nav-item{width:100%;display:flex;gap:18px;align-items:center;min-height:54px;padding:14px 16px;border-radius:9px;font-size:16px;text-align:left}.nav-item:hover{background:var(--green-soft)}.nav-item.active{color:#c95411;background:var(--soft)}:root[data-theme=dark] .nav-item.active{color:#ffae72}.nav-count{font-size:11px;padding:3px 6px;border-radius:5px;background:var(--green-soft);margin-left:auto}.sidebar-bottom{margin-top:auto}.sidebar-bottom p{font-size:13px;color:var(--muted);padding:18px 18px 0;margin:0}.workspace{margin-left:var(--sidebar);min-height:100vh}.topbar{height:88px;display:flex;align-items:center;justify-content:space-between;padding:0 44px}.wordmark{font-size:17px;letter-spacing:2px;font-weight:600}.wordmark>span{font-size:16px;font-weight:400;letter-spacing:0;color:var(--muted)}.topbar-right{display:flex;align-items:center;gap:48px}.theme-button{display:flex;align-items:center;gap:10px;padding:10px 0}.theme-track{width:42px;height:23px;border-radius:20px;background:var(--green-soft);display:inline-flex;padding:3px;border:1px solid var(--line)}.theme-track span{width:15px;height:15px;border-radius:50%;background:var(--text)}:root[data-theme=dark] .theme-track span{transform:translate(18px)}.user{display:flex;align-items:center;gap:14px;font-size:14px}main{padding:16px 44px 32px;max-width:1750px;margin:auto}.page-intro{display:flex;gap:28px;align-items:flex-end;justify-content:space-between;margin:0 0 20px}.page-intro>div:first-child{max-width:1050px}.page-intro p:not(.eyebrow){font-size:17px;color:var(--muted);margin:0;line-height:1.45}.session-meter{width:150px;flex-shrink:0;text-align:right;padding-bottom:5px;font-size:21px}.session-meter progress{width:100%;height:7px;margin-top:12px;display:block}progress{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;border-radius:20px;background:var(--line);overflow:hidden}progress::-webkit-progress-bar{background:var(--line)}progress::-webkit-progress-value{background:var(--orange);border-radius:20px}progress::-moz-progress-bar{background:var(--orange)}.practice-toolbar{display:flex;gap:14px;align-items:center;margin-bottom:23px;font-size:13px}.mode-picker{display:flex;align-items:center;gap:8px;background:var(--green-soft);border-radius:7px;padding:9px 12px}.practice-toolbar select{max-width:180px;padding:8px 24px 8px 12px;font-size:13px;background:transparent;border-color:transparent}.all-modes{margin-left:auto}.text-button{display:inline-flex;align-items:center;gap:7px;padding:4px 0;font-size:12px;color:var(--muted)}.text-button:hover{color:var(--orange)}.quiz-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(320px,1fr);gap:38px;align-items:start}.specimen-stage{min-width:0}.photo-frame{overflow:hidden;border-radius:12px;background:var(--green-soft);position:relative}.photo-frame.large{aspect-ratio:1/1}.image-button{display:block;width:100%;height:100%;padding:0;position:relative}.image-button img{width:100%;height:100%;object-fit:contain;display:block}.photo-frame.large .image-button img{object-fit:cover}.zoom{position:absolute;right:14px;bottom:14px;display:grid;place-items:center;width:32px;height:32px;border-radius:7px;background:#ffffffd9;color:#17382f;opacity:0}.image-button:hover .zoom,.image-button:focus-visible .zoom{opacity:1}.photo-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:var(--muted);margin:12px 0 18px;flex-wrap:wrap}.photo-meta>span{display:flex;align-items:center;gap:6px}.photo-meta a{font-size:12px;text-decoration:underline}.status{display:inline-flex;gap:10px;align-items:center;padding:10px 15px;color:#a6440e;background:var(--soft);border-radius:25px;font-size:13px;line-height:1.3}:root[data-theme=dark] .status{color:#ffae72}.status.confirmed{color:var(--success);background:var(--green-soft)}.status.small{font-size:10px;padding:5px 8px;gap:5px}.photo-disclaimer{font-size:11px;color:var(--muted);line-height:1.55;max-width:550px;margin:13px 0 0}.question-kicker{font-size:11px;color:var(--muted);letter-spacing:.8px;text-transform:uppercase;margin-bottom:11px}.question-title{font-size:23px;margin:0 0 20px;line-height:1.3;letter-spacing:-.3px}.options{display:grid;gap:12px}.option{min-height:68px;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;gap:14px;text-align:left;padding:16px 18px;font-size:17px;line-height:1.4;overflow-wrap:anywhere}.option:hover:not(:disabled),.option.selected{border-color:var(--text);background:var(--green-soft)}.option.correct{border-color:var(--success);background:var(--green-soft)}.option.wrong{border-color:var(--error);background:var(--soft)}.option kbd{font-family:inherit;font-size:10px;color:var(--muted);margin-left:auto;opacity:.6}.radio{width:23px;height:23px;border:1.5px solid #939e96;border-radius:50%;display:grid;place-items:center;flex-shrink:0}.radio>span{width:11px;height:11px;background:var(--text);border-radius:50%}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:12px;border-radius:9px;font-size:14px;font-weight:500;line-height:1.3;padding:16px 20px;min-height:48px}.primary{background:var(--orange);color:#fff;border:1px solid var(--orange)}.primary:hover:not(:disabled){background:#d65e16;border-color:#d65e16;text-decoration:none}.primary:disabled{opacity:.48}.secondary{border:1px solid var(--line);background:var(--paper)}.secondary:hover{background:var(--green-soft);text-decoration:none}.answer-submit{width:100%;margin:16px 0 0;justify-content:space-between;min-height:54px}.hints{margin-top:28px}.hints h3{font-size:14px;font-weight:600;margin-bottom:14px}.hints h3>span{color:var(--muted);font-size:12px;font-weight:400;margin-left:5px}.hint{border:1px solid var(--line);border-radius:8px;margin:9px 0;overflow:hidden}.hint>button{display:flex;align-items:center;gap:10px;width:100%;padding:12px;font-size:12px;text-align:left}.hint>button svg:last-child{margin-left:auto}.hint>p{font-size:13px;margin:0;padding:0 14px 14px;line-height:1.6}.hint small{display:block;font-size:11px;color:var(--muted);margin-top:5px}.compare-note{margin-top:23px;padding-top:19px;border-top:1px solid var(--line)}.compare-note>summary{list-style:none;display:flex;gap:10px;align-items:center;font-size:14px;padding:14px 12px;border:1px solid var(--line);border-radius:8px;cursor:pointer}.compare-note>summary::-webkit-details-marker{display:none}.compare-note>summary>svg:last-child{margin-left:auto}.compare-note p{font-size:13px;margin:14px 0 0;padding:0 10px}.practice-footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);margin-top:32px;padding-top:16px;font-size:11px;color:var(--muted)}.practice-footer>span{display:flex;align-items:center;gap:8px}.site-footer{display:flex;justify-content:space-between;padding:26px 44px;font-size:10px;color:var(--muted);border-top:1px solid var(--line)}.reference-stage{background:var(--green-soft);border-radius:14px;padding:54px 42px;min-height:530px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}.reference-stage>svg{margin-bottom:30px;color:var(--success)}.reference-stage h2{font-size:40px;letter-spacing:-1px}.reference-stage>p:not(.eyebrow){max-width:370px;font-size:14px;color:var(--muted)}.reference-stage .status{font-size:11px}input,textarea,select{color:var(--text);background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:12px 14px;min-width:0}select{font-size:13px}.answer-input{width:100%;font-size:20px;padding:18px}.input-label{font-size:12px;color:var(--muted);display:block;margin-bottom:8px}.blind-note{font-size:14px}.feedback{margin-top:24px;padding:20px;border-radius:10px;border:1px solid var(--line);background:var(--paper)}.feedback-title{display:flex;gap:10px;align-items:center;color:var(--success);margin-bottom:10px}.feedback.failure .feedback-title{color:var(--error)}.feedback p{font-size:13px}.feedback .primary{margin-top:15px;width:100%;justify-content:space-between}.feedback .knowledge-body>h3,.feedback .knowledge-body>.eyebrow{display:none}.feedback .diagnostics{font-size:13px}.feedback .confusions{margin-top:16px}.feedback .source-links a{font-size:10px}.feedback .knowledge-body{margin-top:15px;border-top:1px solid var(--line);padding-top:10px}.comparison-quiz .specimen-stage{display:grid;grid-template-columns:1fr 1fr;gap:10px}.comparison-quiz .specimen-stage>.photo-meta,.comparison-quiz .specimen-stage>.status,.comparison-quiz .specimen-stage>.photo-disclaimer{grid-column:1/-1}.comparison-quiz .specimen-stage>.status{justify-self:start}.comparison-quiz .photo-frame.large{aspect-ratio:3/4}.comparison-quiz{grid-template-columns:1.2fr 1fr}.filter-row{display:flex;gap:16px;margin:30px 0 18px}.search-box{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:9px;padding:0 15px;background:var(--paper);min-width:0;flex:1;color:var(--muted)}.search-box input{border:0;width:100%;padding:15px 0;background:transparent;outline:none;font-size:14px}.search-box:focus-within{outline:2px solid var(--orange)}.chips{display:flex;gap:7px;flex-wrap:wrap;margin:20px 0}.chip{font-size:12px;border:1px solid var(--line);border-radius:30px;padding:10px 15px;white-space:nowrap}.chip:hover{background:var(--green-soft)}.chip.active{background:var(--text);border-color:var(--text);color:var(--bg)}.list-summary{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin:28px 0 16px}.list-summary>span{font-size:11px}.gallery-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px 22px}.specimen-card{text-align:left;padding:0;min-width:0}.specimen-card>img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px;display:block}.specimen-card:hover img{filter:brightness(.94)}.card-topline{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin:13px 0 9px}.card-topline>span:last-child{display:flex;gap:4px}.specimen-card h3{font-size:18px;margin-bottom:10px;font-family:Georgia,serif}.reference-search{max-width:650px;margin:32px 0 25px}.reference-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 32px}.reference-item{text-align:left;border-bottom:1px solid var(--line);padding:28px 0;min-width:0}.reference-item .eyebrow{font-size:9px}.reference-item h3{font-family:Georgia,serif;font-size:24px;margin:10px 0;display:flex;align-items:center;justify-content:space-between;gap:10px}.reference-item p{font-size:13px;color:var(--muted);margin-bottom:10px}.reference-item small{font-size:10px;color:var(--muted)}.reference-item:hover h3{color:var(--orange)}.sources-section{margin-top:50px;padding-top:30px;border-top:1px solid var(--line)}.sources-section>p{font-size:14px;color:var(--muted)}.source-links{display:flex;flex-direction:column;gap:8px;margin-top:20px}.source-links>a{display:flex;gap:6px;align-items:flex-start;font-size:12px;text-decoration:underline;overflow-wrap:anywhere}.source-links>a svg{margin-top:1px}.knowledge-body{max-width:850px}.knowledge-body>h3{font-family:Georgia,serif;font-size:34px;margin-bottom:18px}.diagnostics{padding-left:19px;font-size:15px;line-height:1.7}.diagnostics li{padding:4px 0}.confusions{margin-top:24px;border-top:1px solid var(--line);padding-top:18px}.confusions h4{margin-bottom:12px}.confusions p{font-size:14px;margin-bottom:10px}.check-note{display:flex;gap:12px;background:var(--green-soft);padding:17px;border-radius:9px;font-size:13px;margin:20px 0}.check-note p{margin:5px 0 0}dl{font-size:13px;margin:25px 0}dl>div{padding:11px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:135px 1fr;gap:15px}dt{color:var(--muted)}dd{margin:0;line-height:1.55}.notice{background:var(--green-soft);display:flex;align-items:flex-start;gap:12px;font-size:13px;border-radius:10px;padding:18px;line-height:1.6}.small-notice{font-size:12px;display:block}.mode-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:24px 0}.mode-card{border:1px solid var(--line);border-radius:12px;padding:24px;text-align:left;display:flex;align-items:flex-start;flex-direction:column}.mode-card:hover,.mode-card.active{background:var(--green-soft)}.mode-card>svg:first-child{margin-bottom:24px;color:var(--orange)}.mode-card>.eyebrow{font-size:9px;margin-bottom:9px}.mode-card h3{font-family:Georgia,serif;font-size:23px;margin-bottom:12px}.mode-card p{font-size:12px;color:var(--muted);margin:0 0 20px}.mode-card>svg:last-child{margin-top:auto;align-self:flex-end}.review-hero{display:flex;align-items:center;gap:40px;background:var(--green-soft);border-radius:14px;padding:40px;margin:35px 0}.review-hero>svg{color:var(--success)}.review-hero h2{font-size:32px}.review-hero p{color:var(--muted);font-size:14px}.section-title{font-size:27px;margin:40px 0 20px}.history-list>div{display:flex;gap:18px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);font-size:13px}.history-list>div>div{flex:1}.history-list p{color:var(--muted);font-size:12px;margin:7px 0 0}.history-list small{color:var(--muted);font-size:11px}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);margin:40px 0}.stat{border-left:1px solid var(--line);padding:8px 24px}.stat:first-child{padding-left:0;border:0}.stat>span{display:block;font-size:12px;color:var(--muted)}.stat>strong{display:block;font-size:55px;font-family:Georgia,serif;margin:15px 0 8px}.stat small{color:var(--muted);font-size:11px}.progress-columns{display:grid;grid-template-columns:1.2fr 1fr;gap:70px;margin:40px 0}.progress-columns h2{font-size:27px}.category-stat{margin:28px 0}.category-stat>div{display:flex;justify-content:space-between;gap:14px;font-size:13px}.category-stat>div>span{color:var(--muted);font-size:11px}.category-stat progress{width:100%;height:6px;margin-top:12px}.independence strong{font-size:65px;font-family:Georgia,serif}.independence p{color:var(--muted);font-size:13px}.sample-progress{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 26px}.sample-progress>button{display:flex;align-items:center;gap:12px;text-align:left;padding:15px 0;border-bottom:1px solid var(--line);min-width:0}.sample-progress img{width:46px;height:46px;object-fit:cover;border-radius:5px}.sample-progress>button>span{display:flex;flex-direction:column;min-width:0;gap:5px}.sample-progress strong{font-size:12px;font-weight:500}.sample-progress small{font-size:10px;color:var(--muted)}.sample-progress b{margin-left:auto;font-size:13px}.empty-state,.session-end{padding:60px 24px;text-align:center;max-width:800px;margin:20px auto 60px}.empty-state>svg,.session-end>svg{color:var(--orange);margin-bottom:25px}.empty-state h2,.session-end h2{font-size:38px;margin:15px 0}.empty-state>p,.session-end>p{color:var(--muted);font-size:14px;max-width:550px;margin:15px auto 25px}.session-end .button-row{justify-content:center;margin:25px 0}.end-mistake{text-align:left;padding:20px;border:1px solid var(--line);border-radius:10px;font-size:14px;margin:25px 0}.end-mistake p{font-size:13px;margin-bottom:0}.button-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.loading-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:15px}.loading-screen h1{font-size:40px}.modal{border:1px solid var(--line);border-radius:16px;background:var(--bg);color:var(--text);padding:30px;width:min(590px,calc(100vw - 30px));max-height:90vh;overflow:auto;box-shadow:0 20px 100px #0003}.modal.wide{width:min(1120px,calc(100vw - 40px))}.modal::backdrop{background:#11221ac2;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-heading{display:flex;gap:20px;align-items:flex-start;justify-content:space-between;margin-bottom:24px}.modal-heading h2{margin:0;font-size:31px}.icon-button{width:36px;height:36px;display:grid;place-items:center;border-radius:8px;flex-shrink:0}.icon-button:hover{background:var(--green-soft)}.modal>p.muted{font-size:14px}.modal .mode-grid{gap:12px}.modal .mode-card{padding:19px}.modal .mode-card h3{font-size:21px}.settings-section{border-top:1px solid var(--line);padding:24px 0}.settings-section h3{font-family:Georgia,serif;font-size:21px}.settings-section p{font-size:13px;color:var(--muted)}.check-label{display:flex;gap:12px;align-items:flex-start;font-size:13px;line-height:1.6}.check-label input{accent-color:var(--orange);margin-top:4px}.specimen-modal-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.specimen-modal-grid>div{min-width:0}.specimen-modal-grid h3{margin-top:24px}.specimen-modal-grid p{font-size:14px}.lightbox-photo{max-width:100%;max-height:67vh;object-fit:contain;display:block;margin:auto auto 20px}.edit-form{display:flex;flex-direction:column;gap:19px}.edit-form>label{display:flex;flex-direction:column;gap:7px;font-size:13px}.edit-form textarea{resize:vertical;width:100%}.error-text{color:var(--error);font-size:13px;margin-bottom:0}.method-list{padding-left:22px;font-size:15px;line-height:1.8}.method-list li{padding-bottom:18px}.external-examples{margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}.external-examples>h3{font-size:21px!important}.external-examples>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.external-examples figure{margin:0}.external-examples img{width:100%;aspect-ratio:1/1;object-fit:contain;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.external-examples figcaption{display:flex;flex-direction:column;gap:7px;font-size:11px;margin-top:10px}.external-examples small{font-size:10px;color:var(--muted)}.external-examples a{text-decoration:underline}.external-badge{font-size:9px;border:1px solid var(--line);padding:4px 7px;border-radius:4px;align-self:flex-start}.toast{position:fixed;bottom:25px;left:calc(var(--sidebar) + 35px);right:35px;max-width:650px;background:var(--text);color:var(--bg);border:1px solid var(--line);border-radius:10px;padding:18px 20px;font-size:13px;line-height:1.6;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:15px}.photo-frame.large .image-button img{object-fit:contain}.skill-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px 25px}.skill-stats>div{display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line);padding:17px 0;font-size:12px}.skill-stats span{color:var(--muted);font-size:11px}.sample-train{margin:0 10px 15px 0}html{scrollbar-color:var(--line) var(--bg)}.chips{scrollbar-width:none}.chips::-webkit-scrollbar{display:none}.practice-untracked{font-size:11px;color:var(--muted);border:1px solid var(--line);padding:7px 10px;border-radius:6px}.is-studying>.page-intro,.is-studying>.practice-toolbar,.is-studying>.practice-footer{display:none}.is-studying{padding-top:8px}#practice-heading:focus{outline:none}.end-mistake>summary{cursor:pointer;font-size:16px}.end-mistake[open]>summary{margin-bottom:18px}.end-mistake p{font-size:16px;line-height:1.6}@media(max-width:680px){.page-intro:has(>.secondary){flex-direction:column;align-items:stretch}.page-intro>.secondary{align-self:flex-start}.page-intro:has(>.secondary) h1{max-width:340px}}@media(min-width:1181px){h1{font-size:64px}.quiz-grid{grid-template-columns:minmax(0,1.3fr) minmax(340px,1fr)}.question-title{font-size:25px}.option{font-size:20px}.hints{margin-top:25px}}@media(min-width:1600px){main{padding-top:30px}.quiz-grid{gap:44px}.question-title{font-size:26px}.option{min-height:77px;font-size:20px}.hint>button{font-size:14px;padding:14px}.topbar{height:100px}}@media(max-width:1180px){:root{--sidebar:190px}.brand{padding:0 13px}.brand>span{font-size:23px}.nav-item{font-size:14px;gap:12px}.topbar{padding:0 28px}.topbar-right{gap:25px}main{padding-left:28px;padding-right:28px}.quiz-grid{gap:25px;grid-template-columns:minmax(0,1.1fr) minmax(300px,1fr)}h1{font-size:43px}.session-meter{width:100px}.option{min-height:60px;font-size:15px;padding:13px}.question-title{font-size:21px}.gallery-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.reference-grid,.sample-progress{grid-template-columns:repeat(2,minmax(0,1fr))}.progress-columns{gap:30px}.stat>strong{font-size:46px}}@media(max-width:900px){:root{--sidebar:82px}.sidebar{padding-top:22px}.brand{align-items:center;padding:0}.brand>svg{width:36px}.brand>span,.brand>small,.nav-item>span,.sidebar-bottom p{display:none}.nav-item{justify-content:center;padding:12px;min-height:52px}.sidebar nav{gap:14px}.brand{margin-bottom:50px}.nav-item .nav-count{display:none}.quiz-grid{grid-template-columns:1fr 1fr;gap:22px}.question-title{font-size:20px}.page-intro{gap:15px}h1{font-size:38px}.page-intro p:not(.eyebrow){font-size:14px}.session-meter{width:70px;font-size:16px}.photo-meta{font-size:9px}.photo-meta .text-button{font-size:10px}.option{font-size:13px;min-height:58px;gap:9px}.option kbd{display:none}.radio{width:19px;height:19px}.hint>button{font-size:11px;padding:10px;gap:7px}.status{font-size:11px;padding:9px 11px}.hints h3>span{display:none}.photo-frame.large{aspect-ratio:4/5}.mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:680px){:root{--sidebar:0px}.sidebar{inset:auto 0 0;width:100%;height:66px;padding:0 8px;border-right:0;border-top:1px solid var(--line);background:var(--bg)}.brand,.sidebar-bottom{display:none}.sidebar nav{display:grid;grid-template-columns:repeat(5,1fr);gap:0;width:100%;height:100%;align-items:center}.nav-item{flex-direction:column;gap:4px;padding:7px 2px;border-radius:8px;min-height:52px}.nav-item>svg{width:22px;height:22px}.nav-item>span{display:block;font-size:9px;line-height:1.1}.workspace{padding-bottom:66px}.topbar{height:66px;padding:0 21px}.wordmark{font-size:15px}.wordmark>span{font-size:12px}.topbar-right{gap:15px}.theme-button{gap:6px}.theme-button>svg{width:17px}.theme-track{width:36px;height:21px}.theme-track>span{height:13px;width:13px}:root[data-theme=dark] .theme-track span{transform:translate(14px)}.user{font-size:0!important;gap:0}.user>svg{width:25px}main{padding:16px 21px 30px}.page-intro{align-items:flex-start;margin-bottom:22px;gap:14px}.page-intro h1{font-size:36px;letter-spacing:-1.25px;line-height:1.08;margin-bottom:13px}.page-intro p:not(.eyebrow){font-size:13px;line-height:1.6}.page-intro>div:first-child{flex:1}.session-meter{width:50px;padding-top:6px;font-size:12px}.session-meter progress{margin-top:8px;height:4px}.practice-toolbar{gap:7px;margin-bottom:18px;flex-wrap:wrap}.mode-picker{font-size:11px;padding:8px 9px}.practice-toolbar select{padding:7px 16px 7px 6px;font-size:11px;max-width:148px}.all-modes{font-size:10px}.quiz-grid{display:flex;flex-direction:column;gap:26px}.specimen-stage,.answer-panel{width:100%}.photo-frame.large{aspect-ratio:1.13/1}.photo-meta{margin:9px 0 13px;font-size:9px;gap:6px}.photo-meta .text-button{font-size:9px}.photo-disclaimer{font-size:10px;line-height:1.5;margin-top:10px}.status{font-size:11px;padding:8px 12px}.question-kicker{font-size:9px}.question-title{font-size:24px;margin-bottom:18px}.options{gap:10px}.option{min-height:58px;font-size:16px;padding:14px}.radio{width:22px;height:22px}.answer-submit{min-height:52px;margin-top:14px}.hint>button{font-size:12px;padding:13px;gap:10px}.hints h3{font-size:13px}.hints h3>span{display:inline;font-size:11px}.compare-note>summary{font-size:13px}.practice-footer{margin-top:26px;align-items:flex-start;gap:15px;flex-direction:column}.practice-footer>span{display:none}.site-footer{padding:22px 21px;gap:12px;flex-direction:column;font-size:9px}.filter-row{margin-top:25px;flex-wrap:wrap;gap:10px}.filter-row>.search-box{flex-basis:100%}.filter-row>select{width:100%}.chips{gap:6px;margin:18px 0;flex-wrap:nowrap;overflow:auto;padding-bottom:6px}.chip{font-size:10px;padding:9px 12px}.list-summary>span{display:none}.gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px 14px}.card-topline{font-size:9px;margin-top:10px}.card-topline>span:last-child{font-size:0;gap:0}.specimen-card h3{font-size:18px;overflow-wrap:anywhere}.status.small{font-size:9px;padding:5px 6px}.reference-grid{grid-template-columns:1fr}.reference-item{padding:23px 0}.reference-item h3{font-size:26px}.reference-item p{font-size:14px}.review-hero{padding:25px;flex-direction:column;align-items:flex-start;gap:25px}.review-hero h2{font-size:29px}.mode-grid{gap:12px}.mode-card{padding:17px}.mode-card h3{font-size:21px}.mode-card .eyebrow{font-size:8px}.mode-card p{font-size:11px}.stat-grid{grid-template-columns:1fr 1fr;gap:26px 15px;margin:30px 0}.stat{padding:0 0 0 15px}.stat:nth-child(3){border:0;padding-left:0}.stat>strong{font-size:47px}.progress-columns{grid-template-columns:1fr;gap:20px;margin-top:32px}.sample-progress{grid-template-columns:1fr}.notice{font-size:12px;padding:16px}.session-end,.empty-state{padding:30px 0;margin-bottom:25px}.session-end h2,.empty-state h2{font-size:33px}.session-end .button-row{flex-direction:column;align-items:stretch}.modal,.modal.wide{width:calc(100vw - 20px);padding:22px;max-height:90dvh;border-radius:12px}.modal-heading h2{font-size:27px}.modal .mode-grid{grid-template-columns:1fr 1fr;gap:10px}.modal .mode-card{padding:14px}.modal .mode-card h3{font-size:20px}.modal .mode-card p{font-size:11px}.specimen-modal-grid{grid-template-columns:1fr;gap:30px}.toast{bottom:80px;left:15px;right:15px;font-size:12px;padding:15px}.reference-stage{padding:35px 28px;min-height:340px}.reference-stage h2{font-size:34px}.comparison-quiz .specimen-stage{display:grid;grid-template-columns:1fr 1fr;gap:10px}.comparison-quiz .photo-frame.large{aspect-ratio:3/4}.history-list>div{gap:12px;align-items:flex-start}.history-list small{font-size:9px}dl>div{grid-template-columns:115px 1fr}}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}.model-viewer-shell{min-width:0;width:100%}.model-viewer-stage{position:relative;isolation:isolate;height:470px;background:radial-gradient(ellipse at 50% 45%,#e4e2da,#cfcec6);border-radius:14px;overflow:hidden;border:1px solid var(--line)}.model-viewer-stage model-viewer{display:block;width:100%;height:100%;--progress-bar-color:var(--orange);--progress-bar-height:3px}.model-viewer-stage:fullscreen{height:100%;border-radius:0}.model-loading{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:16px;text-align:center;padding:30px;color:#24392c;pointer-events:none}.model-loading button{pointer-events:auto}.model-loading p{max-width:340px}.model-loading progress{width:170px;accent-color:var(--orange)}.model-live{position:absolute;left:16px;top:16px;display:flex;gap:8px;align-items:center;border-radius:20px;background:#fffdf5e8;color:#254632;font-size:11px;padding:7px 11px;pointer-events:none}.model-live>span{width:6px;height:6px;border-radius:50%;background:#2f7750}.model-expand{position:absolute;right:14px;top:14px;background:#fffdf5de;color:#254632;border-radius:8px;padding:8px;display:grid;place-items:center}.model-controls{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}.model-controls button{min-height:40px;min-width:40px;border:1px solid var(--line);border-radius:7px;padding:7px 11px;font-size:13px;background:var(--paper);display:flex;align-items:center;justify-content:center}.model-controls button:hover,.model-controls button[aria-pressed=true]{background:var(--green-soft)}.model-controls button:disabled{opacity:.4}.model-controls .model-rotation{margin-left:auto}.model-gesture{font-size:12px!important;color:var(--muted);line-height:1.65;margin:10px 0}.model-provenance{display:flex;justify-content:space-between;gap:10px;align-items:center;border-top:1px solid var(--line);padding-top:10px;color:var(--muted);font-size:11px}.model-provenance>span:first-child{display:flex;align-items:center;gap:7px}.model-count{display:flex;gap:10px;align-items:center;white-space:nowrap;font-size:14px;color:var(--text)}.model-selector{display:flex;gap:10px;overflow-x:auto;padding:2px 2px 20px;margin:10px 0}.model-selector>button{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;min-width:150px;text-align:left;border:1px solid var(--line);padding:15px;border-radius:10px;background:var(--paper)}.model-selector>button[aria-pressed=true]{background:var(--text);color:var(--bg);border-color:var(--text)}.model-selector>button>span{grid-row:span 2;font:30px Georgia,serif;opacity:.65}.model-selector strong{font-size:14px;font-weight:500}.model-selector small{font-size:11px;opacity:.75}.model-lab-grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(260px,1fr);gap:35px}.model-observe{border-top:1px solid var(--line);padding:25px 0}.model-observe h2{font-size:34px;margin:17px 0}.model-observe>p:not(.eyebrow):not(.model-limit){font-size:18px;line-height:1.75;min-height:140px}.model-step-dots{display:flex;gap:9px;margin:24px 0}.model-step-dots button{height:34px;width:34px;border:1px solid var(--line);border-radius:50%;font-size:12px}.model-step-dots button[aria-pressed=true]{background:var(--text);color:var(--bg)}.model-stat{font-size:12px;color:var(--muted);margin-top:25px}.model-limit{font-size:12px!important;line-height:1.7;color:var(--muted);margin-top:20px}.model-source-row{display:flex;align-items:center;flex-wrap:wrap;gap:15px;margin:18px 0}.model-source-row a{display:flex;align-items:center;gap:7px;font-size:12px;text-decoration:underline}.model-games{margin-top:45px;padding-top:30px;border-top:1px solid var(--line)}.model-games h2,.model-reference h2{font-size:34px;margin:10px 0}.model-games>div>p:not(.eyebrow),.model-reference p{font-size:15px;line-height:1.7;color:var(--muted);max-width:740px}.model-game-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px}.model-game{text-align:left;padding:24px;border:1px solid var(--line);border-radius:12px;background:var(--paper);display:flex;flex-direction:column;align-items:flex-start}.model-game h3{font:26px Georgia,serif;margin:20px 0 12px}.model-game p{font-size:14px;line-height:1.7;flex:1;color:var(--muted)}.model-game:hover{border-color:var(--text)}.model-game>svg:last-child{align-self:flex-end}.model-reference{display:flex;gap:25px;justify-content:space-between;align-items:center;margin:40px 0;padding:25px;background:var(--green-soft);border-radius:12px}.model-reference h2{font-size:25px}.model-reference .secondary{flex-shrink:0}.model-viewer-shell--compact .model-viewer-stage{height:300px}.study-review__model{margin:25px 0}.model-entry{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px;background:var(--green-soft);border-radius:12px;margin-bottom:25px;text-align:left;width:100%}.model-entry strong{font:26px Georgia,serif}.model-entry p{font-size:13px;color:var(--muted);margin:8px 0 0}.model-quiz-note{font-size:13px;line-height:1.7;color:var(--muted)}@media(max-width:1000px){.model-lab-grid{grid-template-columns:1fr}.model-observe{padding:15px 0}.model-observe>p:not(.eyebrow):not(.model-limit){min-height:0}.model-reference{flex-direction:column;align-items:flex-start}.model-game-grid{gap:10px}.model-game{padding:18px}.model-game h3{font-size:23px}}@media(max-width:680px){.sidebar nav{grid-template-columns:repeat(6,1fr)}.nav-item>span{font-size:9px}.model-viewer-stage{height:340px}.model-viewer-shell--compact .model-viewer-stage{height:240px}.model-controls{gap:5px}.model-controls button{font-size:12px;padding:7px 10px;min-width:36px}.model-controls .model-rotation{margin-left:0}.model-selector>button{min-width:138px;padding:12px}.model-count{font-size:11px}.model-game-grid{grid-template-columns:1fr}.model-game{position:relative;padding:22px}.model-game h3{margin:12px 0 8px;font-size:26px}.model-game>svg:last-child{position:absolute;right:20px;top:22px}.model-games h2,.model-observe h2{font-size:30px}.model-observe>p:not(.eyebrow):not(.model-limit){font-size:18px}.model-provenance{font-size:10px}.model-entry{padding:18px}.model-entry strong{font-size:24px}.model-reference{padding:20px}.model-reference .secondary{width:100%;font-size:12px}.model-source-row .status{font-size:10px}.model-lab .page-intro{flex-direction:column}.model-games{margin-top:25px}.model-live{font-size:10px}}.model-samples{border-top:1px solid var(--line);padding-top:18px;margin-top:20px}.model-samples>summary{cursor:pointer;font-size:17px;font-weight:600}.model-samples .input-label{display:flex;flex-direction:column;gap:10px;margin:18px 0}.model-samples select{align-self:flex-start;max-width:100%}.model-quality{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:12px 0}.model-quality select{font-size:12px;min-height:36px;max-width:100%;padding:6px 28px 6px 10px}.model-filters{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:20px 0 14px}.model-filters label{min-width:0}.model-search{display:flex;align-items:center;gap:10px;flex:1 1 230px;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:0 12px}.model-search input{width:100%;border:0;background:transparent;min-width:0;min-height:44px;padding:10px 0;font-size:14px}.model-filters select{max-width:100%;min-height:44px;font-size:13px}.model-jump{flex:0 1 270px}.model-jump select{width:100%}.model-catalog-heading{display:flex;justify-content:space-between;gap:15px;font-size:12px;color:var(--muted);margin-bottom:12px}.model-lab .model-selector{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));max-height:195px;overflow:auto;padding:2px 8px 12px 2px;gap:9px}.model-lab .model-selector>button{min-width:0;grid-template-columns:44px 1fr;padding:12px;gap:5px 7px}.model-lab .model-selector>button>span{font-size:23px}.model-lab .model-selector strong{font-size:13px;overflow-wrap:anywhere}.model-selected-title{font:27px Georgia,serif;margin:12px 0 16px}.model-selected-title small{font:11px Arial,sans-serif;color:var(--muted);display:block;margin-top:8px}.model-no-results{padding:35px 20px;text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:12px}.model-no-results h2{font-size:30px}.model-no-results p{color:var(--muted);font-size:15px}.model-no-results button{margin:15px auto}.model-lab .model-lab-grid{align-items:start}.model-observe{margin-top:59px}@media(max-width:1000px){.model-observe{margin-top:0}}@media(max-width:680px){.model-filters{gap:8px}.model-search{flex-basis:100%}.model-filters>label:not(.model-search){flex:1 1 145px}.model-filters select{width:100%;font-size:12px}.model-catalog-heading{font-size:10px}.model-lab .model-selector{grid-template-columns:repeat(2,minmax(0,1fr));max-height:175px;gap:7px}.model-lab .model-selector>button{padding:10px;grid-template-columns:40px 1fr;gap:4px 6px}.model-lab .model-selector>button>span{font-size:21px}.model-lab .model-selector strong{font-size:12px}.model-selected-title{font-size:25px}.model-count{white-space:normal}}:root{font-family:Arial,Helvetica,sans-serif;--bg:#f0f5fb;--paper:#ffffff;--text:#14263b;--muted:#52667d;--line:#cbd9e7;--orange:#176bc5;--accent:#176bc5;--accent-ink:#ffffff;--soft:#e4efff;--green-soft:#e6eff7;--green:var(--accent);--error:#ad2850;--success:#186746;--warning:#91520c;--warning-soft:#fff1dd;--danger-soft:#ffeaf0;--sidebar:218px;color:var(--text);background:var(--bg);--surface-raised:#f8fbff;--shadow:0 12px 36px #102d4d08;color-scheme:light}:root[data-theme=dark]{--bg:#080d16;--paper:#101a29;--text:#e6effc;--muted:#9daec5;--line:#293c55;--orange:#9edaff;--accent:#9edaff;--accent-ink:#081624;--soft:#172e49;--green-soft:#15263a;--error:#ff9ab0;--success:#8cdcc1;--warning:#f1c98b;--warning-soft:#2c241a;--danger-soft:#34202d;--surface-raised:#142033;--shadow:0 16px 46px #00000024;color:var(--text);background:var(--bg);color-scheme:dark}body{background:var(--bg);color:var(--text)}::selection{background:var(--accent);color:var(--accent-ink)}h1,h2,h3,h4{font-family:Arial,Helvetica,sans-serif;font-weight:600;letter-spacing:-.035em}h1{font-size:clamp(36px,4vw,58px);line-height:1.08}h2{font-size:30px;line-height:1.2}.eyebrow,.question-kicker{font-family:Consolas,Courier New,monospace;font-weight:400;letter-spacing:.13em;font-size:11px}.eyebrow{color:var(--accent)}.fine-print,.photo-disclaimer,.model-limit,.model-gesture{color:var(--muted)}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{transition:background-color .18s,border-color .18s,box-shadow .18s,transform .18s}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.sidebar{background:var(--bg);padding-top:32px;border-right:1px solid var(--line)}.brand{padding:0 16px;margin-bottom:42px}.brand>svg{color:var(--accent);width:37px;height:37px;margin-bottom:18px}.brand>span{font-family:Arial,Helvetica,sans-serif;font-size:23px;line-height:1.06;font-weight:600;letter-spacing:-.8px}.brand small{font-size:12px;line-height:1.7;margin-top:14px}.nav-item{font-size:14px;border:1px solid transparent;border-radius:4px 12px;gap:13px;min-height:50px}.nav-item:hover{background:var(--paper);border-color:var(--line)}.nav-item.active,:root[data-theme=dark] .nav-item.active{color:var(--accent);background:var(--soft);border-color:color-mix(in srgb,var(--accent) 40%,var(--line));box-shadow:inset 3px 0 var(--accent)}.nav-count{background:var(--paper);color:var(--accent)}.topbar{height:80px;border-bottom:1px solid var(--line);margin-bottom:26px}.wordmark{letter-spacing:.2em;font-weight:700;color:var(--text)}.wordmark>span{letter-spacing:.04em;font-size:12px}.topbar-right{gap:28px}.user{font-size:13px}.theme-button{border-radius:8px;padding:8px}.theme-button:hover,.theme-track{background:var(--paper)}.theme-track span{background:var(--accent)}main{padding-top:0;max-width:1650px}.page-intro{margin-bottom:27px}.page-intro p:not(.eyebrow){color:var(--muted);line-height:1.65;font-size:16px}.page-intro h1{max-width:1050px}.primary,.secondary{min-height:50px;border-radius:3px 15px;font-weight:600;letter-spacing:.01em;padding:15px 20px}.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);box-shadow:0 0 22px color-mix(in srgb,var(--accent) 10%,transparent)}.primary:hover:not(:disabled){background:var(--accent);border-color:var(--accent);box-shadow:0 0 28px color-mix(in srgb,var(--accent) 27%,transparent);transform:translateY(-2px)}.secondary{background:var(--paper);border-color:var(--line)}.secondary:hover:not(:disabled){background:var(--green-soft);border-color:var(--accent);transform:translateY(-2px)}.primary:active:not(:disabled),.secondary:active:not(:disabled){transform:translateY(0)}.primary:disabled{opacity:.42;box-shadow:none}.text-button:hover{color:var(--accent)}.lab-intro{position:relative;isolation:isolate;overflow:hidden;min-height:330px;padding:34px 38px;background:#0b111e;color:#edf5ff;border:1px solid #2b405b;border-radius:5px 26px;margin-bottom:38px;box-shadow:0 18px 50px #00000018}.lab-intro__content{position:relative;z-index:1;max-width:70%}.lab-intro .eyebrow{display:flex;align-items:center;gap:9px;color:#9edaff;margin-bottom:17px}.lab-intro h1{font-size:clamp(35px,3.3vw,53px);line-height:1.06;letter-spacing:-.045em;margin-bottom:16px;color:#f0f6ff}.lab-intro h1 span{color:#a9daff}.lab-intro__description{font-size:15px;line-height:1.7;color:#aebed3;margin-bottom:22px;max-width:460px}.lab-intro__actions{display:flex;gap:12px;flex-wrap:wrap}.lab-intro .primary{--accent:#a9daff;--accent-ink:#0a1728;font-size:13px;padding:13px 17px;min-height:46px}.lab-intro .secondary{color:#e6effc;background:#101c2b;border-color:#38506b;font-size:13px;padding:13px 17px;min-height:46px}.lab-intro .secondary:hover{border-color:#9edaff;background:#172b43}.lab-intro__art{position:absolute;right:-15px;top:0;bottom:0;width:40%;overflow:hidden;opacity:.78;z-index:0;pointer-events:none;transform:translate(var(--drift-x,0px),var(--drift-y,0px));transition:transform .35s ease-out}.lab-intro__art img{height:135%;width:135%;max-width:none;object-fit:cover;object-position:45% 32%;position:absolute;top:-13%;right:-14%;mix-blend-mode:screen}.lab-intro__meta{display:flex;flex-wrap:wrap;align-items:center;gap:17px;color:#a9bad2;font:11px/1.5 Consolas,Courier New,monospace;margin-top:26px}.lab-intro__meta>span{display:inline-flex;align-items:center;gap:7px}.lab-intro__meta strong{font-weight:400;color:#dcedff}.model-section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}.model-section-heading .eyebrow{margin-bottom:8px}.model-section-heading h2{margin:0;font-size:29px}.model-count{font:12px/1.5 Consolas,Courier New,monospace;color:var(--muted)}.model-filters{scroll-margin-top:24px}.model-filters input,.model-filters select,.practice-toolbar select,input[type=search],input[type=text],textarea{color:var(--text);background:var(--paper);border-color:var(--line)}select option{background:var(--paper);color:var(--text)}.model-search{background:var(--paper);border-color:var(--line)}.model-selector>button{background:var(--paper);border-radius:4px 13px}.model-selector>button:hover{border-color:var(--accent);background:var(--surface-raised)}.model-selector>button[aria-pressed=true]{background:var(--soft);color:var(--text);border-color:var(--accent);box-shadow:inset 0 -2px var(--accent)}.model-selector>button>span{font:26px/1 Consolas,Courier New,monospace;color:var(--muted)}.model-selector>button[aria-pressed=true]>span{color:var(--accent)}.model-selector strong{font-weight:600}.model-selected-title{font-family:Arial,Helvetica,sans-serif;font-size:28px;letter-spacing:-.03em}.model-selected-title small{font-family:Consolas,Courier New,monospace;color:var(--muted)}.model-viewer-stage{background:#dce2e8;border-radius:5px 20px;border-color:var(--line)}:root[data-theme=dark] .model-viewer-stage{background:#18283b}.model-live,.model-expand{background:var(--paper);color:var(--text);border:1px solid var(--line)}.model-live>span{background:var(--accent)}.model-controls button{background:var(--paper);border-radius:4px;min-height:43px}.model-controls button:hover:not(:disabled),.model-controls button[aria-pressed=true]{border-color:var(--accent);background:var(--soft);color:var(--accent)}.model-controls button:active:not(:disabled){transform:scale(.96)}.model-observe{padding:25px;border:1px solid var(--line);border-radius:5px 20px;background:var(--paper);box-shadow:var(--shadow)}.model-observe h2{font-size:30px;line-height:1.16}.model-observe>p:not(.eyebrow):not(.model-limit){font-size:18px;line-height:1.75;min-height:0}.model-step-dots button{border-radius:4px;font-family:Consolas,Courier New,monospace}.model-step-dots button[aria-pressed=true]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.model-game{border-radius:5px 20px;box-shadow:var(--shadow)}.model-game h3{font:600 24px/1.2 Arial,Helvetica,sans-serif;letter-spacing:-.03em}.model-game>svg:first-child{color:var(--accent)}.model-game:hover{transform:translateY(-4px);border-color:var(--accent);background:var(--surface-raised)}.model-game:hover>svg:last-child{transform:translate(4px)}.model-game>svg:last-child{transition:transform .18s;color:var(--accent)}.model-entry{border:1px solid var(--line);background:var(--paper);border-radius:5px 18px}.model-entry:hover{border-color:var(--accent);background:var(--soft)}.model-entry strong{font:600 24px/1.2 Arial,Helvetica,sans-serif;letter-spacing:-.03em}.model-reference{background:var(--paper);border:1px solid var(--line);border-radius:5px 20px}.status,:root[data-theme=dark] .status{background:var(--warning-soft);color:var(--warning);border:1px solid color-mix(in srgb,var(--warning) 22%,transparent);border-radius:5px}.status.confirmed,:root[data-theme=dark] .status.confirmed{background:var(--green-soft);color:var(--success);border-color:var(--success)}.notice{background:var(--warning-soft);color:var(--warning);border-color:color-mix(in srgb,var(--warning) 30%,var(--line))}.photo-frame,.example-photo__open{border:1px solid var(--line);border-radius:5px 18px;background:var(--paper)}.photo-frame img,.example-photo__open img{filter:none}.option{background:var(--paper);border-radius:5px 14px;min-height:66px;font-size:18px}.option:hover:not(:disabled),.option.selected{background:var(--soft);border-color:var(--accent)}.option.selected .radio{border-color:var(--accent)}.option.selected .radio>span{background:var(--accent)}.option.wrong{background:var(--danger-soft);border-color:var(--error)}.option.correct{background:var(--green-soft);border-color:var(--success)}.mode-picker{background:var(--paper);border:1px solid var(--line);border-radius:5px}.gallery-card,.reference-card,.stat,.mode-card{background:var(--paper);border-color:var(--line);box-shadow:var(--shadow)}.gallery-card:hover,.reference-card:hover,.mode-card:hover{border-color:var(--accent)}.modal{background:var(--paper);color:var(--text);border-color:var(--line);border-radius:7px 24px;box-shadow:0 30px 100px #0008}.modal::backdrop{background:#030811b8;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px)}.study-review__title{font-family:Arial,Helvetica,sans-serif;font-weight:600;letter-spacing:-.035em}.study-review__diagnostics li{font-size:clamp(19px,1.5vw,23px);line-height:1.65}.study-review__comparison p{font-size:18px;line-height:1.65}.specimen-views__heading h3{font:600 25px/1.2 Arial,Helvetica,sans-serif}.study-review__next{border-radius:5px 16px}@media(min-width:1600px){.lab-intro{padding:42px;min-height:365px}.lab-intro h1{font-size:59px}}@media(max-width:1180px){:root{--sidebar:190px}.lab-intro{padding:27px}.lab-intro__content{max-width:78%}.lab-intro__art{width:43%;opacity:.5}.lab-intro__description{max-width:365px}.lab-intro h1{font-size:42px}}@media(max-width:900px){:root{--sidebar:82px}.sidebar{padding-top:24px}.brand{padding:0}.lab-intro__content{max-width:100%}.lab-intro__art{opacity:.18;width:50%}.lab-intro h1{font-size:40px}.model-lab-grid{gap:23px}.model-count{font-size:11px}}@media(max-width:680px){:root{--sidebar:0px}.sidebar{padding:0 6px;height:72px;background:var(--bg)}.sidebar nav{grid-template-columns:repeat(6,minmax(0,1fr))}.nav-item{border-radius:4px 10px;gap:5px;padding:8px 1px}.nav-item.active,:root[data-theme=dark] .nav-item.active{box-shadow:inset 0 -2px var(--accent)}.nav-item>span{font-size:9px}.workspace{padding-bottom:72px}.topbar{height:66px;padding:0 20px;margin-bottom:18px}.topbar-right{gap:10px}.theme-button{padding:4px}.theme-track{width:36px}main{padding:0 18px 25px}.page-intro h1{font-size:34px;line-height:1.12;letter-spacing:-.04em}.page-intro p:not(.eyebrow){font-size:15px;line-height:1.6}.lab-intro{padding:26px 22px 22px;border-radius:4px 22px;min-height:0;margin-bottom:29px}.lab-intro__art{width:72%;right:-20%;opacity:.23}.lab-intro__content{max-width:100%}.lab-intro h1{font-size:36px;letter-spacing:-.045em}.lab-intro .eyebrow{font-size:10px;letter-spacing:.1em}.lab-intro__description{font-size:14px;line-height:1.65;max-width:300px}.desktop-break{display:none}.lab-intro__actions{flex-direction:column;align-items:stretch;gap:10px}.lab-intro .primary,.lab-intro .secondary{justify-content:space-between;min-height:48px}.lab-intro__meta{font-size:10px;gap:9px 14px;margin-top:22px}.lab-intro__meta>span:last-child{display:none}.model-section-heading{align-items:flex-start;flex-direction:column;gap:11px}.model-section-heading h2{font-size:27px}.model-section-heading .eyebrow{font-size:10px}.model-selector>button>span{font-size:23px}.model-observe{padding:22px}.model-observe h2{font-size:28px}.model-observe>p:not(.eyebrow):not(.model-limit){font-size:18px}.model-game h3{font-size:24px}.model-limit,.model-gesture{font-size:13px!important;line-height:1.65}.model-controls button{min-height:44px}.option{font-size:16px;min-height:60px}.primary,.secondary{min-height:48px}.model-selected-title{font-size:27px}.study-review__diagnostics li{font-size:20px;line-height:1.6}.study-review__comparison p{font-size:17px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.lab-intro__art,button:hover,.model-game:hover{transform:none!important}}.account-screen{--account-ice:#a9daff;position:relative;isolation:isolate;min-height:100dvh;max-width:none;padding:42px clamp(24px,8vw,130px);overflow:hidden;background:#080d16;color:#e6effc;display:flex;flex-direction:column;align-items:flex-start}.account-screen__orb{position:absolute;z-index:-1;width:min(850px,75vw);height:min(850px,75vw);right:-7%;top:50%;transform:translateY(-50%);opacity:.62;pointer-events:none;-webkit-mask-image:linear-gradient(90deg,transparent,#000 25%,#000 85%,transparent);mask-image:linear-gradient(90deg,transparent,#000 25%,#000 85%,transparent)}.account-screen__orb img{height:100%;width:100%;object-fit:contain;mix-blend-mode:screen}.account-screen:after{content:"";position:absolute;z-index:-1;top:0;right:0;bottom:0;left:0;pointer-events:none;background-image:radial-gradient(#a9daff24 .7px,transparent .7px);background-size:24px 24px;-webkit-mask-image:linear-gradient(180deg,#000,transparent 75%);mask-image:linear-gradient(180deg,#000,transparent 75%)}.account-brand{display:flex;align-items:center;gap:13px;color:#a9daff;text-decoration:none;font-size:25px;letter-spacing:.22em;font-weight:700}.account-brand small{display:block;color:#94a8c3;font:11px/1.8 Arial,sans-serif;letter-spacing:.06em;margin-top:2px}.account-card{width:min(100%,540px);margin:auto 0;padding:54px 0;position:relative}.account-card h1{color:#edf5ff;font-size:clamp(48px,6.4vw,82px);line-height:1.02;letter-spacing:-.06em;margin:25px 0}.account-card h1 span{color:#a9daff}.account-eyebrow{font:11px/1.6 Consolas,monospace;letter-spacing:.15em;text-transform:uppercase;color:#9edaff;display:flex;align-items:center;gap:9px}.account-eyebrow>span{width:6px;height:6px;background:#a9daff;box-shadow:0 0 14px #9edaff80}.account-description{color:#aabbd2;font-size:17px;line-height:1.75;max-width:440px}.account-benefits{display:flex;flex-direction:column;gap:13px;margin:28px 0 34px;color:#b9cbe2;font-size:14px}.account-benefits span{display:flex;gap:11px;align-items:center}.account-benefits svg{color:#a9daff;flex-shrink:0}.account-google{background:#f4f8ff;color:#17273d;display:flex;align-items:center;justify-content:center;gap:13px;border:1px solid #d3e3f8;border-radius:4px 17px;font:600 15px/1.4 Arial,sans-serif;min-height:58px;width:100%;padding:17px 22px;box-shadow:0 0 24px #9edaff0a;cursor:pointer}.account-google:hover:not(:disabled){background:#fff;box-shadow:0 0 30px #9edaff35;transform:translateY(-2px)}.account-google:disabled{cursor:wait;opacity:.5}.account-google svg:last-child:not(:first-child){margin-left:auto}.account-google svg:first-child{margin-right:auto}.account-google:focus-visible,.account-data summary:focus-visible,.account-text-button:focus-visible{outline:2px solid #a9daff;outline-offset:5px}.account-privacy{display:flex;gap:9px;align-items:flex-start;color:#91a5c0;font-size:12px;line-height:1.8;margin-top:20px}.account-privacy svg{flex-shrink:0;margin-top:3px}.account-setup{color:#aabbd2;font-size:14px;line-height:1.7;margin:20px 0}.account-data{color:#91a5c0;font-size:12px;line-height:1.8;margin-top:17px;max-width:490px}.account-data summary{cursor:pointer;color:#bacce1}.account-data p{margin:12px 0}.account-alert{display:flex;align-items:flex-start;gap:10px;background:#30212c;border:1px solid #684359;color:#ffc3cf;padding:15px 17px;border-radius:4px 13px;font-size:14px;line-height:1.7;margin:22px 0}.account-alert svg{flex-shrink:0;margin-top:2px}.account-alert p{margin:0}.account-footer{font:11px/1.6 Consolas,monospace;letter-spacing:.1em;color:#7188a6}.account-retry{display:flex;flex-direction:column;gap:16px;margin-top:25px}.account-text-button{background:none;border:0;color:#a9daff;cursor:pointer;padding:10px;font-size:14px;text-decoration:underline;text-underline-offset:5px}.account-settings>h3{overflow-wrap:anywhere}.account-email{overflow-wrap:anywhere;color:var(--muted);font-size:14px}.account-settings p{line-height:1.7}.account-settings .button-row{margin-top:17px}.sync-label{font:11px/1.5 Consolas,monospace;display:inline-flex;gap:7px;align-items:center;color:var(--muted)}.sync-label>span{width:5px;height:5px;background:currentColor;flex-shrink:0}.sync-label--saved{color:var(--success)}.sync-label--pending,.sync-label--saving{color:var(--accent)}.sync-label--error,.sync-label--conflict{color:var(--error)}.user-profile-copy{display:flex;flex-direction:column;gap:3px;align-items:flex-end;max-width:210px}.user-profile-copy>strong{font-size:13px;font-weight:500;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-profile-copy .sync-label{font-size:10px;white-space:nowrap}.legacy-import{padding:18px 0 0;margin-top:22px;border-top:1px solid var(--line);font-size:14px;line-height:1.7}.legacy-import summary{cursor:pointer;color:var(--accent)}.progress-conflict-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#020813e6;z-index:1000;display:grid;place-items:center;padding:24px;overflow:auto}.progress-conflict{width:min(100%,720px);background:var(--paper);border:1px solid var(--line);border-radius:5px 24px;padding:32px;max-height:calc(100dvh - 48px);overflow:auto;outline:none;box-shadow:0 28px 100px #0007}.progress-conflict h2{margin:12px 0 18px}.progress-conflict p{line-height:1.75;color:var(--muted)}.conflict-versions{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}.conflict-versions>div{display:flex;flex-direction:column;align-items:flex-start;gap:12px;border:1px solid var(--line);background:var(--surface-raised);padding:20px;border-radius:4px 13px}.conflict-versions span{font-size:13px;color:var(--muted)}.conflict-versions strong{font-size:22px}@media(max-width:700px){.account-screen{padding:26px 24px;min-height:100svh}.account-screen__orb{width:690px;height:690px;right:-420px;top:43%;opacity:.32}.account-card{padding:48px 0;width:100%}.account-card h1{font-size:59px}.account-description{font-size:16px;max-width:340px}.account-google{font-size:14px}.account-footer{font-size:10px}.account-brand{font-size:23px}.account-benefits{font-size:13px}.user-profile-copy{max-width:100px;margin-right:7px}.user-profile-copy>strong{font-size:11px}.user-profile-copy .sync-label{font-size:9px;white-space:normal;text-align:right}.topbar .theme-button>svg{display:none}.conflict-versions{grid-template-columns:1fr}.progress-conflict{padding:24px}.progress-conflict-backdrop{padding:14px}.progress-conflict h2{font-size:26px}}@media(prefers-reduced-motion:reduce){.account-screen *{animation:none!important;transition:none!important}.account-google:hover:not(:disabled){transform:none}}.portal-root,.portal-onboarding{--p-bg:#080e19;--p-text:#eaf3ff;--p-muted:#9cacbf;--p-line:#26364e;--p-blue:#a6dcff;background:var(--p-bg);color:var(--p-text);min-height:100dvh;font-family:Arial,Helvetica,sans-serif}.portal-header{max-width:1320px;margin:auto;padding:29px 50px;display:flex;justify-content:space-between;align-items:center;gap:20px}.portal-logo{display:flex;gap:12px;align-items:center;text-align:left;color:var(--p-blue)}.portal-logo>span{font-size:23px;letter-spacing:.12em;font-weight:600}.portal-logo small{display:block;font-size:10px;color:var(--p-muted);letter-spacing:.06em;font-weight:400;margin-top:4px}.portal-user{display:flex;align-items:center;gap:12px;font-size:13px;max-width:50%}.portal-user>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.portal-main{max-width:1320px;margin:auto;padding:0 50px;animation:portal-enter .45s ease both}.portal-main h1{font-size:clamp(36px,4.6vw,66px);font-weight:500;line-height:1.1;letter-spacing:-.05em}.portal-eyebrow{font:11px/1.5 Consolas,monospace;letter-spacing:.13em;text-transform:uppercase;color:var(--p-blue);margin-bottom:24px}.portal-lead{font-size:18px;line-height:1.7;color:var(--p-muted);max-width:640px}.portal-primary{background:#b6e0ff;color:#0b2036;border:1px solid #d4eeff;border-radius:7px 22px 7px 7px;padding:18px 23px;display:inline-flex;justify-content:center;align-items:center;gap:24px;font-weight:600;font-size:15px;min-height:56px;box-shadow:0 0 28px #72baff12}.portal-primary:hover{background:#d0ecff;transform:translateY(-2px)}.portal-primary:disabled{opacity:.5;transform:none}.portal-outline{border:1px solid #657e9c;border-radius:7px;padding:13px 18px;display:inline-flex;gap:16px;align-items:center;font-size:14px}.portal-outline:hover{background:#14273d}.portal-back{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--p-muted);padding:12px 0;margin-bottom:28px}.portal-welcome{min-height:calc(100dvh - 165px);position:relative;display:flex;align-items:center;padding:70px 0 100px;isolation:isolate}.portal-welcome__copy{position:relative;z-index:1;max-width:700px}.portal-welcome h1{margin-bottom:26px}.portal-welcome em{font-style:normal;color:var(--p-blue);overflow-wrap:anywhere}.portal-welcome .portal-primary{margin-top:24px}.portal-welcome__sync{display:block;margin-top:21px;color:var(--p-muted);font-size:12px}.portal-welcome__crystal{position:absolute;width:67%;max-width:760px;right:-40px;top:50%;transform:translateY(-54%);z-index:-1;opacity:.72;-webkit-mask-image:radial-gradient(ellipse at center,#000 30%,transparent 72%);mask-image:radial-gradient(ellipse at center,#000 30%,transparent 72%)}.portal-welcome__bottom{position:absolute;bottom:28px;left:0;right:0;display:flex;justify-content:space-between;gap:20px;color:#8095ae;font:11px/1.5 Consolas,monospace;letter-spacing:.08em}.portal-hub{padding:22px 0 30px;min-height:750px}.portal-hub__heading{text-align:center}.portal-hub__heading h1{font-size:46px}.portal-hub__heading>p:last-child{color:var(--p-muted);font-size:15px}.portal-hub__heading .portal-eyebrow{margin-bottom:12px}.portal-orbit{height:560px;position:relative;max-width:1020px;margin:auto}.portal-orbit__crystal{position:absolute;width:610px;height:610px;object-fit:contain;left:50%;top:48%;transform:translate(-50%,-50%);opacity:.8;-webkit-mask-image:radial-gradient(ellipse,#000 24%,transparent 68%);mask-image:radial-gradient(ellipse,#000 24%,transparent 68%)}.portal-orbit__caption{position:absolute;left:50%;top:47%;transform:translate(-50%,-50%);text-align:center;font:10px Consolas,monospace;letter-spacing:.2em;text-shadow:0 2px 15px #000}.portal-orbit__caption strong{display:block;font:500 40px Arial;letter-spacing:.18em;margin:10px}.portal-orbit__caption small{font-size:9px;letter-spacing:.1em}.portal-orbit__button{position:absolute;display:flex;align-items:center;gap:13px;text-align:left;min-width:245px;padding:10px;animation:portal-enter .55s ease both}.portal-orbit__button>span:nth-child(2){max-width:168px}.portal-orbit__button strong{display:block;font-size:16px;font-weight:500;line-height:1.4}.portal-orbit__button small{display:block;font-size:11px;color:var(--p-muted);line-height:1.5;margin-top:5px}.portal-orbit__disc{width:76px;height:76px;border-radius:50%;border:1px solid #6285a4;background:#112337d9;box-shadow:inset 0 0 24px #6db8e014,0 0 30px #427da112;display:grid;place-items:center;color:#c0e7ff;flex-shrink:0;transition:transform .2s,background .2s}.portal-orbit__button:hover .portal-orbit__disc{transform:scale(1.08);background:#213f5b}.portal-orbit__button>svg{color:#7291af}.portal-orbit__button--0{top:0;left:50%;transform:translate(-50%)}.portal-orbit__button--1{left:0;top:170px;animation-delay:.06s}.portal-orbit__button--2{right:0;top:170px;animation-delay:.12s}.portal-orbit__button--3{left:13%;top:390px;animation-delay:.18s}.portal-orbit__button--4{right:10%;top:390px;animation-delay:.24s}.portal-orbit__button--0 .portal-orbit__disc{background:#aecff0;color:#0d2441;border-color:#d0eaff}.portal-section{padding:20px 0 65px;min-height:calc(100dvh - 180px)}.portal-section h1{margin-bottom:22px}.portal-section .portal-eyebrow{margin-bottom:16px}.portal-categories{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:34px}.portal-categories>button{position:relative;min-height:190px;text-align:left;padding:26px;border:1px solid var(--p-line);border-radius:10px;background:#101c2c}.portal-categories>button:hover{transform:translateY(-4px);border-color:#8eb6d7}.portal-categories>button>svg:first-child{color:var(--p-blue);margin-bottom:23px}.portal-categories h2{font-size:21px;letter-spacing:-.03em;margin-bottom:10px}.portal-categories p{font-size:13px;color:var(--p-muted);margin:0;padding-right:12px}.portal-categories>button>svg:last-child{position:absolute;right:18px;top:24px;color:#7d95ad}.portal-ranked-teaser{display:flex;gap:20px;align-items:center;padding:30px 0;margin-top:24px;border-top:1px solid var(--p-line)}.portal-ranked-teaser>div{flex:1}.portal-ranked-teaser h2{font-size:20px;margin-bottom:7px}.portal-ranked-teaser p{font-size:13px;color:var(--p-muted);margin:0}.portal-modes{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:32px 0}.portal-modes>button{text-align:left;border:1px solid var(--p-line);border-radius:10px;padding:30px;background:#101c2c}.portal-modes>button:hover{border-color:#8eb6d7;background:#15283e}.portal-modes h2{font-size:25px}.portal-modes p{font-size:15px;color:var(--p-muted)}.portal-modes>button>svg{margin-top:10px;color:var(--p-blue)}.portal-note{font-size:13px;line-height:1.65;color:var(--p-muted);display:block;max-width:790px}.portal-profile__grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:35px}.portal-panel{background:#101c2c;border:1px solid var(--p-line);border-radius:12px;padding:30px}.portal-panel h2{font-size:25px;margin-bottom:24px}.portal-name-form label{display:block;font-size:14px;margin-bottom:10px}.portal-name-form input,.portal-feedback textarea,.portal-feedback select{width:100%;background:#0b1422;border:1px solid #425a74;color:#edf5ff;border-radius:7px;padding:14px 16px;line-height:1.5}.portal-name-form input{font-size:20px}.portal-name-form>p{font-size:13px;color:var(--p-muted);margin:14px 0 22px}.portal-stats{display:grid;grid-template-columns:1fr 1fr;gap:27px;margin:35px 0}.portal-stats strong{display:block;font-size:38px;font-weight:500;color:#b6e0ff;margin-bottom:6px}.portal-stats span{font-size:12px;color:var(--p-muted)}.portal-account-panel{margin-top:24px}.portal-account-panel .settings-section{margin:0;padding:0;border:none}.portal-account-panel .account-email{overflow-wrap:anywhere}.portal-footer{max-width:1220px;margin:auto;padding:26px 0 34px;border-top:1px solid var(--p-line);display:flex;justify-content:space-between;gap:15px;font-size:11px;color:var(--p-muted)}.portal-feedback-bar{display:flex;justify-content:flex-end;padding:10px 22px 15px;position:sticky;bottom:0;z-index:20;pointer-events:none;background:linear-gradient(transparent,#080e19f2)}.portal-feedback-bar button{pointer-events:auto;background:#111e2e;border:1px solid #d0dce8;border-radius:7px;padding:10px 14px;display:flex;align-items:center;gap:9px;font-size:12px;box-shadow:0 3px 20px #0005;color:#f0f6ff}.portal-feedback{width:min(540px,calc(100% - 30px));max-height:90dvh;overflow:auto;background:#101c2c;color:#eaf3ff;border:1px solid #44627f;border-radius:14px;padding:28px}.portal-feedback::backdrop{background:#01050dcc;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px)}.portal-feedback header{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;margin-bottom:22px}.portal-feedback h2{font-size:25px;margin:0}.portal-feedback p{font-size:14px;color:#a9b9cc}.portal-feedback label{display:block;font-size:13px;margin:18px 0}.portal-feedback label>select,.portal-feedback label>textarea{display:block;margin-top:9px;font-size:16px}.portal-feedback .portal-primary{margin-top:24px;width:100%}.portal-feedback__thanks{display:grid;justify-items:start;gap:16px}.portal-feedback__thanks>svg{color:#9ad6bc}.portal-feedback__thanks small{color:#a9b9cc;font-size:12px}.portal-error,.portal-name-form .portal-error{color:#ffadb8;font-size:14px}.portal-success,.portal-name-form .portal-success{color:#a4e3ca}.portal-onboarding{position:relative;isolation:isolate;display:grid;align-items:center;padding:60px max(6vw,24px)}.portal-onboarding>section{max-width:600px}.portal-onboarding h1{font-size:clamp(38px,6vw,64px);font-weight:500;letter-spacing:-.05em}.portal-onboarding .portal-name-form{max-width:470px;margin-top:32px}.portal-onboarding__art{position:absolute;top:0;right:0;bottom:0;left:35%;background:url(/design/lito-signal.webp) center/contain no-repeat;opacity:.35;z-index:-1;-webkit-mask-image:radial-gradient(ellipse,#000,transparent 65%);mask-image:radial-gradient(ellipse,#000,transparent 65%)}.portal-return{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#0e1b2c;color:#eaf3ff;padding:13px 25px;border-bottom:1px solid #324862;position:relative;z-index:3}.portal-return button{display:flex;gap:9px;align-items:center;font-size:13px}.portal-return>span{font-size:11px;color:#a6bbcf}.portal-existing .sidebar{top:46px}.portal-existing .app-shell{min-height:calc(100dvh - 46px)}.portal-existing main{padding-bottom:50px}@keyframes portal-enter{0%{opacity:0;filter:blur(3px)}to{opacity:1;filter:blur(0)}}@media(max-width:1000px){.portal-header{padding:24px 28px}.portal-main{padding:0 28px}.portal-orbit__button{min-width:210px;gap:10px}.portal-orbit__button>span:nth-child(2){max-width:135px}.portal-orbit__disc{width:65px;height:65px}.portal-orbit__button--3{left:6%}.portal-orbit__button--4{right:2%}.portal-orbit__crystal{width:540px;height:540px}.portal-footer{margin:0 28px}.portal-profile__grid{gap:16px}.portal-panel{padding:24px}}@media(max-width:700px){.portal-header{padding:22px 20px}.portal-main{padding:0 20px}.portal-logo small{font-size:9px}.portal-user{font-size:12px}.portal-welcome{padding:40px 0 80px;min-height:calc(100svh - 135px);align-items:flex-end}.portal-welcome h1{font-size:40px}.portal-welcome__crystal{width:115%;max-width:none;right:-20%;top:12%;transform:none;opacity:.45}.portal-welcome__copy{margin-top:95px}.portal-welcome__bottom{font-size:9px;bottom:22px}.portal-welcome__bottom>span:last-child{display:none}.portal-lead{font-size:16px}.portal-primary{font-size:14px;gap:20px;padding:16px 20px}.portal-hub{min-height:auto;padding:25px 0}.portal-hub__heading{text-align:left}.portal-hub__heading h1{font-size:36px}.portal-orbit{height:auto;display:grid;gap:11px;padding:140px 0 20px}.portal-orbit__crystal{width:330px;height:330px;top:15px;left:auto;right:-35px;transform:none;opacity:.45;max-width:90vw}.portal-orbit__caption{display:none}.portal-orbit__button{position:relative;inset:auto;transform:none;min-width:0;display:flex;width:100%;padding:13px 15px;border:1px solid #293e56;border-radius:12px;background:#101e30e8;gap:17px;animation-delay:0s}.portal-orbit__button>span:nth-child(2){max-width:none;flex:1}.portal-orbit__disc{width:53px;height:53px}.portal-orbit__button strong{font-size:16px}.portal-orbit__button small{font-size:12px}.portal-orbit__button>svg{margin-left:auto}.portal-categories{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin-top:27px}.portal-categories>button{padding:20px 16px;min-height:185px}.portal-categories h2{font-size:19px}.portal-categories p{font-size:12px;line-height:1.5}.portal-categories>button>svg:last-child{display:none}.portal-ranked-teaser{flex-wrap:wrap;gap:12px}.portal-ranked-teaser>div{flex-basis:75%}.portal-ranked-teaser>.portal-outline{margin-left:40px}.portal-section h1{font-size:36px}.portal-profile__grid{grid-template-columns:1fr}.portal-section{padding-top:10px}.portal-footer{margin:0 20px;flex-direction:column;padding:24px 0;font-size:10px}.portal-feedback-bar{padding:8px 15px 12px}.portal-return{padding:12px 15px}.portal-return>span{display:none}.portal-existing .sidebar{top:0}.portal-feedback{padding:22px}.portal-feedback h2{font-size:23px}.portal-onboarding__art{top:0;right:0;bottom:0;left:0;opacity:.15}}@media(prefers-reduced-motion:reduce){.portal-root *,.portal-onboarding *{animation:none!important;transition:none!important;scroll-behavior:auto!important}.portal-primary:hover,.portal-orbit__button:hover .portal-orbit__disc,.portal-categories>button:hover{transform:none}}.identify-details{border:1px solid var(--line);border-radius:12px;margin:25px 0;background:var(--paper)}.identify-details>summary{list-style:none;display:flex;align-items:center;gap:12px;padding:20px;font-size:20px;color:var(--accent);cursor:pointer}.identify-details>summary>svg:last-child{margin-left:auto}.identify-details>div{padding:5px 22px 25px}.knowledge-body dl{font-size:17px}.knowledge-body .diagnostics,.knowledge-body .confusions p,.knowledge-body .check-note{font-size:18px;line-height:1.75}.course-learning{margin:28px 0;padding-top:24px;border-top:1px solid var(--line)}.course-learning h4{font-size:20px}.course-learning ul{font-size:17px;line-height:1.7;padding-left:20px}.course-learning .notice{display:block;font-size:14px}.portal-existing .sidebar{display:none}.portal-existing .workspace{margin-left:0}.portal-existing .topbar{padding-left:24px}.portal-existing .app-shell{grid-template-columns:minmax(0,1fr)}.portal-root{overflow-x:clip}.portal-root:has(.is-studying) .portal-feedback-bar{bottom:78px}