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34rem),#08080a;align-content:start;min-width:0;padding:18px;display:grid}.atlas-3d-viewer{background:#050506;border:1px solid #31282c;border-radius:18px;overflow:hidden;box-shadow:0 24px 60px #00000061}.atlas-api-viewer{background:#050506;min-height:520px;position:relative}.atlas-3d-viewer iframe{background:#050506;border:0;width:100%;height:clamp(520px,67vh,720px);display:block}.atlas-viewer-status{z-index:3;color:#fff7f7;text-align:center;background:radial-gradient(circle,#e9435929,#0000 58%),#08080a;place-content:center;justify-items:center;gap:12px;padding:24px;display:grid;position:absolute;inset:0}.atlas-viewer-status>b{font-family:var(--font-display);font-size:22px;font-weight:400}.atlas-viewer-status>span:not(.atlas-loader){color:#c7babc;font-size:12px}.atlas-viewer-status button{color:#0b0b0d;background:#e94359;border:1px solid #ff7588;border-radius:999px;min-height:44px;padding:0 18px;font-size:12px;font-weight:900}.atlas-loader{border:3px solid 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8px;font-size:10px}.atlas-3d-help b{color:#ff9aa8}.atlas-source{color:#b7aaad;justify-content:space-between;gap:14px;padding:13px 4px 0;font-size:10px;line-height:1.45;display:flex}.atlas-source a{color:#ff9aa8;text-align:right;font-weight:800}.structure-chip-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:18px;display:grid}.structure-chip-grid button{color:#fff7f7;text-align:left;background:#151518;border:1px solid #3b3034;border-radius:12px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:9px;min-width:0;padding:8px 10px;display:grid}.structure-chip-grid button.active{background:#431722;border-color:#e94359}.structure-chip-grid button span{color:#ff9aa8;font-family:var(--font-display);font-size:13px}.structure-chip-grid button b{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:10px;overflow:hidden}.atlas-content{grid-template-columns:minmax(320px,1fr) 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.atlas-panel-toggle b{white-space:normal;max-width:54px}.anatomy-stage{width:min(88%,480px);aspect-ratio:var(--stage-ratio);border-radius:var(--radius);background:#fff;align-self:center;margin:34px auto;position:relative}.anatomy-stage.muscles{width:min(90%,610px)}.anatomy-stage>img{object-fit:contain;width:100%;height:100%;position:absolute;inset:0}.hotspot{z-index:2;border:2px solid var(--surface-strong);background:var(--coral);color:#181010;border-radius:50%;place-items:center;width:42px;height:42px;min-height:42px;padding:0;transition:transform .14s,background .14s;display:grid;position:absolute;transform:translate(-50%,-50%);box-shadow:0 4px 14px #62302747}.hotspot:hover,.hotspot.selected{z-index:3;background:var(--green);color:#fff;transform:translate(-50%,-50%)scale(1.12)}:root[data-theme=dark] .hotspot:hover,:root[data-theme=dark] .hotspot.selected,:root[data-theme=harley] .hotspot:hover,:root[data-theme=harley] 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p{color:var(--ink-soft);margin:0;font-size:13px;line-height:1.65}.atlas-question-heading{margin:12px 0 22px}.atlas-answer-grid{gap:9px;display:grid}.atlas-answer-grid button{border:1px solid var(--line);background:var(--surface);text-align:left;border-radius:13px;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:11px;min-width:0;padding:9px 12px;display:grid}.atlas-answer-grid button:hover{border-color:var(--green);background:var(--green-soft)}.atlas-answer-grid button span{background:var(--paper-deep);width:34px;height:34px;color:var(--green-dark);border-radius:50%;place-items:center;font-size:10px;font-weight:900;display:grid}.atlas-answer-grid button b{min-width:0;font-size:12px}.atlas-result-mark{background:var(--green-soft);color:var(--green-dark);border-radius:13px;align-items:center;gap:10px;margin-bottom:18px;padding:12px;display:flex}.atlas-result-mark.wrong{background:var(--coral-soft);color:var(--red)}.atlas-result-mark span{border:1px solid;border-radius:50%;place-items:center;width:34px;height:34px;font-weight:900;display:grid}.atlas-result-mark b{font-size:12px}.practice-feature-grid{grid-template-columns:1.55fr repeat(3,minmax(0,.62fr));gap:14px;display:grid}.practice-feature{border-radius:var(--radius);text-align:left;min-height:230px;padding:24px}.main-feature{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);grid-template-rows:auto 1fr auto;display:grid}.main-feature>.button{margin-top:16px}.feature-index{color:var(--ink-soft);font-family:var(--font-display);font-size:16px}.main-feature h2{font-family:var(--font-display);letter-spacing:-.04em;margin:8px 0;font-size:42px;font-weight:400}.practice-feature p{color:var(--ink-soft);margin:0;font-size:12px;line-height:1.55}.mini-feature{border:0;flex-direction:column;justify-content:space-between;transition:transform .16s;display:flex}.mini-feature:hover{transform:translateY(-3px)}.mini-feature h3{font-family:var(--font-display);margin:0 0 7px;font-size:26px;font-weight:400}.mini-feature>span:last-child{align-self:flex-end;font-size:20px}.flashcard-feature{background:var(--violet-soft)}.match-feature{background:var(--coral-soft)}.bank-feature{background:var(--green-soft)}.mode-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.mode-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);gap:8px;padding:24px;display:grid}.mode-card>span{color:var(--ink-soft);letter-spacing:.13em;text-transform:uppercase;font-size:10px;font-weight:900}.mode-card>b{font-family:var(--font-display);font-size:56px;font-weight:400}.mode-card>small{min-height:30px;color:var(--ink-soft);font-size:11px}.mode-card .button{margin-top:14px}.exam-banner{border-radius:var(--radius);background:var(--ink);color:var(--surface);grid-template-columns:1fr auto;align-items:center;gap:30px;padding:28px;display:grid}.exam-banner .eyebrow,.exam-banner 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span{text-transform:uppercase;font-size:9px}.body-part-grid{border-top:1px solid var(--line);border-left:1px solid var(--line);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.body-part-grid button{border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);text-align:left;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;min-height:70px;padding:14px;display:grid}.body-part-grid button:hover{background:var(--green-soft)}.body-part-grid span{color:var(--ink-soft);font-family:var(--font-display);font-size:12px}.body-part-grid b{font-size:12px}.body-part-grid i{font-style:normal}.activity-page,.quiz-page,.results-page{gap:22px;max-width:1180px;margin:0 auto;display:grid}.activity-heading{padding-top:10px}.match-progress{gap:8px;display:grid}.match-progress>span{color:var(--ink-soft);font-size:11px;font-weight:800}.matching-board{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);grid-template-columns:1fr 1fr;gap:18px;padding:26px;display:grid}.match-column{gap:10px;display:grid}.match-column .eyebrow{margin-bottom:8px}.match-column button{border:1px solid var(--line);background:var(--paper);text-align:left;border-radius:14px;min-height:60px;padding:12px 16px;font-size:13px;font-weight:800}.match-column button.selected{border-color:var(--green);background:var(--green-soft)}.match-column.locations button{border-style:dashed}.match-message{background:var(--paper-deep);min-height:54px;color:var(--ink-soft);border-radius:14px;padding:17px 20px;font-size:13px}.match-message.complete{background:var(--green-soft);color:var(--green-dark);font-weight:800}.quiz-topline{color:var(--ink-soft);justify-content:space-between;align-items:center;gap:16px;font-size:11px;font-weight:800;display:flex}.quiz-topline>div{align-items:center;gap:14px;display:flex}.quiz-topline b{color:var(--ink)}.quiz-topline b.urgent{color:var(--red)}.quiz-progress{background:var(--paper-deep);border-radius:99px;height:6px;overflow:hidden}.quiz-progress span{background:var(--green);height:100%;transition:width .3s;display:block}.question-layout{grid-template-columns:minmax(0,1fr) 210px;gap:18px;display:grid}.question-card{border:1px solid var(--line);border-radius:calc(var(--radius) + 4px);background:var(--surface);min-height:560px;box-shadow:var(--shadow);padding:36px}.question-card-header{justify-content:space-between;align-items:center;gap:16px;display:flex}.question-meta{color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase;flex-wrap:wrap;align-items:center;gap:9px;font-size:10px;font-weight:800;display:flex}.topic-pill{background:0 0;border:1px solid;border-radius:999px;padding:7px 10px;font-size:9px}.question-card>h1{max-width:850px;font-family:var(--font-display);letter-spacing:-.035em;margin:34px 0 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label{color:var(--ink-soft);letter-spacing:.12em;text-transform:uppercase;font-size:10px;font-weight:900}.answer-form input,.answer-form textarea{border:1px solid var(--line-strong);background:var(--paper);width:100%;min-height:58px;color:var(--ink);border-radius:14px;outline:0;padding:15px 17px;font-size:16px}.answer-form textarea{resize:vertical;min-height:150px;line-height:1.55}.answer-form input:focus,.answer-form textarea:focus{border-color:var(--green);box-shadow:0 0 0 4px var(--green-soft)}.answer-form small{color:var(--ink-soft);font-size:11px}.exam-note{background:var(--paper-deep);color:var(--ink-soft);border-radius:12px;margin-top:20px;padding:12px 14px;font-size:11px}.feedback-card{border-radius:16px;grid-template-columns:1fr auto;gap:20px;margin-top:24px;padding:20px;display:grid}.feedback-card.correct{background:var(--green-soft)}.feedback-card.wrong{background:var(--coral-soft)}.feedback-card span{color:var(--ink-soft);letter-spacing:.12em;text-transform:uppercase;font-size:9px;font-weight:900}.feedback-card h3{font-family:var(--font-display);margin:5px 0;font-size:26px;font-weight:400}.feedback-card p{color:var(--ink-soft);margin:0;font-size:12px;line-height:1.55}.session-rail{border-radius:var(--radius);background:var(--ink);color:var(--surface);align-content:start;gap:12px;padding:22px;display:grid}.session-rail .eyebrow{color:var(--surface)}@supports (color:color-mix(in lab, red, red)){.session-rail .eyebrow{color:color-mix(in srgb, var(--surface) 60%, transparent)}}.session-rail>div{border-bottom:1px solid var(--surface);justify-content:space-between;align-items:end;gap:10px;padding:14px 0;display:flex}@supports (color:color-mix(in lab, red, red)){.session-rail>div{border-bottom:1px solid color-mix(in srgb, var(--surface) 15%, transparent)}}.session-rail>div span{color:var(--surface)}@supports (color:color-mix(in lab, red, red)){.session-rail>div span{color:color-mix(in srgb, var(--surface) 68%, transparent)}}.session-rail>div span{font-size:10px}.session-rail>div b{font-family:var(--font-display);font-size:27px;font-weight:400}.quiz-action-bar{justify-content:flex-end;display:flex}.region-visual{float:right;justify-items:center;width:min(220px,42%);margin:10px 0 14px 22px;display:grid}.region-visual>div{aspect-ratio:1156/1342;border:1px solid var(--line);background:#fff;border-radius:14px;position:relative;overflow:hidden}.region-visual .posterior-view{aspect-ratio:1304/1506}.region-visual img{object-fit:contain;width:100%;height:100%}.region-highlight{border:3px solid var(--coral);background:#ee7b676b;border-radius:45%;position:absolute;box-shadow:0 0 0 5px #ee7b6724}.region-visual small{color:var(--ink-soft);letter-spacing:.1em;text-transform:uppercase;margin-top:7px;font-size:9px;font-weight:900}.flashcard-page{max-width:920px}.flashcard{border:1px solid var(--line);border-radius:calc(var(--radius) + 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var(--line);grid-column:2;width:100%;padding-top:10px}.library-actions{grid-area:auto/2;justify-content:flex-start}.mobile-only-back{margin-bottom:18px;display:inline-flex}.question-title-row{gap:12px;display:grid}.read-prompt-button{justify-self:start}.scan-launch-card{grid-template-columns:auto minmax(0,1fr);padding:18px}.scan-launch-card>i{display:none}.scan-launch-card b{font-size:22px}.settings-panel,.account-panel{border-left:0;padding-left:20px;padding-right:20px}.guest-import-banner{flex-direction:column;align-items:stretch}.guest-import-banner>div:last-child{grid-template-columns:1fr 1fr;display:grid}}@media (max-width:390px){.mobile-brand>b{font-size:16px}.topbar-actions{gap:6px}.app-shell.text-large .streak-pill,.streak-pill{display:none}.hero-copy h1,.page-intro h1,.activity-heading h1,.results-page h1{font-size:44px}.action-number{width:48px;height:48px}.progress-hero-grid{grid-template-columns:1fr}.mobile-nav button b{font-size:10px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}