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.mastery-scale{width:min(150px,100%);margin-top:8px}.mobile-score-breakdown{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(5,minmax(0,1fr));display:grid}.mobile-score-breakdown>div{text-align:center;gap:3px;min-width:0;padding:8px 2px;display:grid}.mobile-score-breakdown span{color:var(--muted);text-overflow:ellipsis;font-size:.58rem;overflow:hidden}.mobile-score-breakdown strong{font-variant-numeric:tabular-nums;font-size:.78rem}.mobile-result-actions{order:-1;justify-content:center;align-items:center;gap:8px;display:flex}.mobile-result-actions .primary-action,.mobile-result-actions .secondary-action{flex:1;gap:8px;min-height:48px;padding:0 12px}}@media (width<=520px){.home-screen,.practice-screen{width:calc(100% - 28px)}.home-intro h1,.section-header h1{font-size:clamp(1.7rem,8vw,2.4rem)}.instrument{margin-top:14px}.instrument-field{min-height:272px}.instrument-copy{bottom:12px;left:12px}.instrument-actions{gap:12px}.section-header{margin-bottom:36px}.ledger-row{grid-template-columns:minmax(0,1fr) 76px 20px;gap:8px;min-height:82px;padding-inline:4px}.ledger-study{grid-template-columns:22px 52px minmax(0,1fr);gap:8px}.ledger-study .shape-glyph{width:48px;height:48px}.ledger-study small{display:none}.challenge-copy{flex-basis:76px;min-height:76px}.canvas-message{bottom:9px;left:9px;right:9px}}@media (width>=861px){.play-workspace{grid-template-rows:minmax(0,1fr);height:calc(100dvh - 65px)}.play-column{min-height:0;overflow-y:auto}.shape-rail{min-height:0;padding-right:8px;overflow:hidden}.shape-list{scrollbar-width:thin;scrollbar-color:var(--line) transparent;min-height:0;padding-right:14px;overflow-y:auto}.score-rail{scrollbar-width:thin;scrollbar-color:var(--line) transparent;min-height:0;overflow-y:auto}.challenge-copy{min-height:64px}.challenge-copy h1{max-width:none;min-height:auto;font-size:clamp(1.55rem,2.2vw,2.2rem)}.drawing-frame{width:min(100%,720px,100dvh - 240px);margin:0 auto auto}}@media (width>=861px) and (height<=760px){.home-screen,.practice-screen{padding-top:18px}.home-intro{display:block}.home-intro .eyebrow{margin-bottom:2px}.home-intro h1{max-width:none;font-size:clamp(1.9rem,2.5vw,2.4rem)}.home-intro>p:last-child{display:none}.instrument{min-height:300px;margin-top:16px}.instrument-field{min-height:300px}.best-reading strong{font-size:2.3rem}.section-header{margin-bottom:16px;display:block}.section-header h1{max-width:none;margin-top:2px;font-size:clamp(1.9rem,2.5vw,2.4rem)}.section-header>p{display:none}.play-column{padding-block:14px}.challenge-copy{min-height:56px;margin-bottom:12px}.challenge-copy h1{font-size:clamp(1.3rem,2vw,1.8rem)}.drawing-frame{width:min(100%,720px,100dvh - 172px)}.shape-rail{padding:18px 8px 18px 22px}.score-rail{padding:18px 22px}.back-button{margin:0 0 12px}.score-display{min-height:96px}.score-row{min-height:36px}.result-actions{margin-top:16px}}@media (height<=650px) and (width<=860px){.topbar{min-height:53px;padding-top:max(9px, env(safe-area-inset-top));padding-bottom:9px}.play-column{min-height:calc(100dvh - 53px);padding-top:9px}.challenge-copy{flex-basis:62px;min-height:62px;margin-bottom:6px}.challenge-copy h1{margin-top:4px;font-size:clamp(1.2rem,5vw,1.7rem)}.mobile-result-panel{min-height:52px;margin-top:6px}.mobile-result-panel.has-score{gap:6px}.mobile-score-summary{padding:8px 12px}.mobile-score-breakdown>div{padding-block:5px}.mobile-result-actions .primary-action,.mobile-result-actions .secondary-action{min-height:44px}}@media (orientation:landscape) and (height<=560px) and (width<=960px){.play-column{grid-template-rows:1fr auto;grid-template-columns:minmax(0,1fr) minmax(260px,38vw);gap:8px 18px;display:grid}.challenge-copy{flex-direction:column;grid-area:1/1;align-items:start}.attempt-status{text-align:left}.drawing-frame{grid-area:1/2/3;width:100%}.mobile-result-panel{grid-area:2/1}}@media (prefers-color-scheme:dark){:root{--page:#0f1622;--surface:#16202e;--surface-deep:#1d2938;--ink:#dfe5ec;--muted:#99a5b6;--faint:#5e6c7f;--line:#263548;--target:#7c8a9d;--accent:#8fb3e8;--accent-soft:#1d3050;--error:#e07a63}.primary-action{color:#0e1a2e}.primary-action:hover{background:#a9c4ef}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important}}