.nc-course-switch{display:flex;align-items:center;gap:18px;margin:8px 0 22px;padding:17px 20px;background:#eee5d5;border-radius:10px;color:#80684c}.nc-course-switch label{font-size:16px;white-space:nowrap}.nc-course-switch label span{margin-left:8px;color:#a17d50}.nc-course-switch select{min-width:0;flex:1;max-width:450px;border:1px solid #d5bea0;border-radius:7px;background:#fffbf3;padding:12px 14px;color:#694d33;font-size:18px}.nc-course-time{margin-left:auto;font-size:14px;color:#9b8262}.nc-main{max-width:960px;margin:0 auto;background:#faf5eb;border:1px solid #ded0b8;border-radius:14px;overflow:hidden}.nc-step-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 26px 0;font-size:15px;color:#9c805b}.nc-step-heading #nc-phase{border-radius:20px;background:#efe3cd;color:#926343;padding:7px 12px;font-size:14px}.nc-step{margin:15px 26px 20px}.nc-step h2{font:29px/1.4 var(--serif);color:#6f4d35;margin:0 0 11px}.nc-step p{font-size:18px;line-height:1.8;color:#7d644b;margin:0;max-width:800px}.nc-view-switch{display:flex;gap:5px;margin:0 26px 12px;width:max-content;background:#e8ddc8;border-radius:25px;padding:4px}.nc-view-switch button{border:0;background:none;border-radius:21px;color:#8a7050;font-size:16px;padding:9px 17px}.nc-view-switch button.active{background:#fffaf0;color:#8f4d38;box-shadow:0 2px 4px #40271812}.nc-canvas{overflow:hidden;background:radial-gradient(ellipse at 50% 45%,#f5f0e5,#e5dac6);touch-action:none;position:relative;max-height:555px}.nc-canvas svg{display:block;width:100%;height:auto;max-height:555px;transform-origin:50% 50%;transition:transform .18s;touch-action:none;user-select:none}.nc-canvas [id$=-handle],.nc-canvas #nc-needle{cursor:grab}.nc-canvas.is-watching{pointer-events:none}.nc-target-ring{animation:nc-breathe 1.8s infinite}.nc-live-tools{display:flex;align-items:center;gap:18px;flex-wrap:wrap;padding:18px 26px 0}.nc-live-tools[hidden],.nc-mode[hidden],.nc-control[hidden],[hidden]{display:none}.nc-mode{display:flex;gap:8px;flex-shrink:0}.nc-mode button{background:#f3ead7;border:1px solid #dcc5a2;border-radius:7px;font-size:16px;color:#8b6b44;padding:12px 18px}.nc-mode button.active{background:#8b775d;color:#fff9ed;border-color:#8b775d}.nc-live-tools p{font-size:16px;line-height:1.7;color:#90714d;margin:0}.nc-feedback{margin:18px 26px 15px;background:#f0e8d9;border-left:3px solid #b7a27b;padding:12px 16px;border-radius:7px;font-size:16px;line-height:1.7;color:#8c7050}.nc-feedback.error{background:#f5e2d7;border-color:#b15a3c;color:#9d4b36}.nc-feedback.success{background:#e7eddf;border-color:#7c9171;color:#607451}.nc-lesson-progress{height:5px;margin:0 26px;background:#e7ddc9;border-radius:8px;overflow:hidden}.nc-lesson-progress span{height:100%;display:block;background:#a94b38;transition:width .3s}:is(.nc-demo-controls,.nc-observe-controls){display:flex;flex-wrap:wrap;gap:10px;margin:22px 26px 25px;align-items:center}:is(.nc-demo-controls,.nc-observe-controls) button{border:1px solid #d8c4a4;background:#fffaf0;border-radius:7px;color:#957047;padding:13px 20px;font-size:16px;line-height:1.4;min-height:48px}:is(.nc-demo-controls,.nc-observe-controls) button.primary{background:#a64a35;border-color:#a64a35;color:#fff8e8}:is(.nc-demo-controls,.nc-observe-controls) button:disabled{opacity:.45;cursor:default}:is(.nc-demo-controls,.nc-observe-controls) button[hidden]{display:none}.nc-settings{border-top:1px solid #e3d4bd;padding:17px 26px 20px;color:#977750;font-size:15px}.nc-settings summary,.nc-lesson-notes summary,.nc-references summary,.nc-mastery summary{cursor:pointer;font-size:16px;line-height:1.8}.nc-settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 28px;margin-top:20px}.nc-control label{display:block;color:#8b6d49;font-size:16px;margin-bottom:10px}.nc-control label b{float:right;color:#ae7b43;font-size:14px;font-weight:normal}.nc-control input[type=range]{width:100%;display:block;accent-color:#a85841;min-height:28px}.nc-range-label{display:flex;justify-content:space-between;font-size:13px;color:#a08864}.nc-section{grid-column:1/-1;max-width:400px;background:#f0e7d6;border:1px solid #e2d0b0;border-radius:7px;margin:auto;width:100%}.nc-section svg{width:100%;max-height:115px;display:block}.nc-stage-caption{display:flex;gap:22px;margin-top:20px}.nc-stage-caption .text-btn{font-size:15px;color:#9b6e43}.nc-lesson-notes,.nc-references{max-width:960px;margin:20px auto;color:#987750;border:1px solid #dfcfb5;background:#f9f4e9;border-radius:9px;padding:15px 21px}.nc-notes-content{padding:16px 0 6px}.nc-scope{display:block;font-size:14px;color:#a0825d;line-height:1.8}.nc-notes-content p,.nc-reference-grid p{font-size:17px;color:#8c7050;line-height:1.9}.nc-reading a,.nc-reference-grid a{display:block;font-size:16px;color:#a36540;text-decoration:underline;text-underline-offset:3px;line-height:1.8;margin:10px 0}.nc-practice-card{border:1px solid #d0b894;border-radius:7px;background:#eee0c6;color:#8b603a;font-size:16px;padding:12px 18px;line-height:1.7;display:block;margin:22px 0 17px;width:max-content;max-width:100%}.nc-practice-card small{display:block;font-size:13px;color:#a78a63}.nc-notes-content>.text-btn{font-size:15px}.nc-reference-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:12px 0 0}.nc-reference-grid h3{font:24px/1.5 var(--serif);color:#7e5a39}.nc-mastery{max-width:960px;margin:25px auto;padding:24px 26px;border:1px solid #ddc9a7;border-radius:12px;background:#f2ead8;color:#8f6b44}.nc-mastery[hidden]{display:none}.nc-mastery-title{font:25px/1.6 var(--serif);display:block;color:#755437;margin-bottom:20px}.nc-mastery details{border-top:1px solid #dfcfb4;padding:15px 0}.nc-mastery p{font-size:17px;color:#95764f;line-height:1.9}.nc-mastery label{display:flex;align-items:start;gap:11px;font-size:17px;line-height:1.8;margin:15px 0}.nc-mastery input[type=checkbox]{width:20px;height:20px;margin-top:5px;flex-shrink:0;accent-color:#9a6a42}.nc-quiz h3{font:24px/1.6 var(--serif);color:#7a5430;margin:17px 0}.nc-quiz button[data-nc-answer]{display:block;width:100%;text-align:left;font-size:16px;line-height:1.8;padding:12px 16px;border:1px solid #d7bf9a;background:#fff7e8;color:#876440;border-radius:7px;margin:10px 0}.nc-quiz button.selected{background:#e4d5b9;border-color:#ab8754}.nc-mastery>.btn{font-size:16px;margin:14px 0 22px}.nc-photo-upload{display:inline-block;background:#e5d6b9;border:1px solid #cfb48a;border-radius:7px;padding:12px 16px;font-size:16px;cursor:pointer}.nc-photo .text-btn{font-size:15px;display:inline-block;margin:16px 0 16px 14px}.nc-photo-preview,#nc-photo-preview{background:#eee2cc;border-radius:8px;padding:20px;display:flex;align-items:center;justify-content:center;min-height:140px;color:#a2855b;font-size:15px;flex-direction:column;gap:12px}#nc-photo-preview img{max-width:100%;max-height:280px;object-fit:contain} @keyframes nc-breathe{50%{opacity:.4}}
@media(max-width:600px){.nc-course-switch{flex-wrap:wrap;gap:10px;padding:13px 15px;margin-top:0}.nc-course-switch label{font-size:15px}.nc-course-switch select{order:3;flex-basis:100%;width:100%;font-size:17px;padding:12px}.nc-course-time{font-size:13px}.nc-step-heading{padding:17px 17px 0;font-size:14px}.nc-step-heading #nc-phase{font-size:13px;padding:6px 9px}.nc-step{margin:14px 17px 18px}.nc-step h2{font-size:26px}.nc-step p{font-size:17px;line-height:1.8}.nc-view-switch{margin:0 17px 13px}.nc-view-switch button{font-size:15px;padding:8px 14px}.nc-live-tools{padding:14px 17px 0;gap:10px}.nc-mode button{padding:10px 16px}.nc-live-tools p{font-size:15px}.nc-feedback{margin:15px 17px;padding:10px 12px;font-size:16px}.nc-lesson-progress{margin:0 17px}:is(.nc-demo-controls,.nc-observe-controls){margin:19px 17px 21px;gap:10px}:is(.nc-demo-controls,.nc-observe-controls) button{padding:13px 15px;font-size:16px}:is(.nc-demo-controls,.nc-observe-controls) button.primary{flex:1 1 100%}.nc-settings{padding:14px 17px 17px}.nc-settings-grid{grid-template-columns:1fr;gap:21px}.nc-stage-caption{gap:17px}.nc-stage-caption .text-btn{font-size:14px}.nc-lesson-notes,.nc-references{padding:14px 16px}.nc-settings summary,.nc-lesson-notes summary,.nc-references summary,.nc-mastery summary{font-size:16px}.nc-reading a,.nc-reference-grid a{font-size:16px}.nc-reference-grid{grid-template-columns:1fr;gap:8px}.nc-mastery{padding:20px 17px}.nc-mastery-title{font-size:24px}.nc-quiz h3{font-size:24px}.nc-photo .text-btn{margin-left:0;display:block}.nc-photo-upload{font-size:16px}.nc-notes-content p{font-size:17px}.nc-practice-card{font-size:16px;width:100%}}

.nc-observe-controls{margin-bottom:17px}.nc-observe-controls[hidden],.nc-demo-controls[hidden]{display:none}
/* v7: a compact stage, an automatic single-needle demo, and one Continue action. */
.nc-main button,.nc-main summary,.nc-course-switch select,.nc-lesson-notes button,.nc-lesson-notes summary,.nc-mastery button,.nc-mastery summary{touch-action:manipulation}
.nc-topline{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:0 0 20px;color:#5f4935}.nc-topline h1{font:29px/1.3 var(--serif);margin:0}.nc-topline>span{font-size:15px;color:#a18968}.nc-course-switch{padding:12px 18px;margin:0 0 18px;gap:15px;background:#eee5d5}.nc-course-switch select{max-width:none;padding:10px 13px;font-size:17px}.nc-main{max-width:1000px;background:#fff9ef;border-color:#d9c8ab;box-shadow:0 12px 35px #73502d08}.nc-main .nc-step-heading{padding:18px 22px 0;font-size:15px;gap:16px}.nc-main .nc-step-heading>span:first-child{font-family:Georgia,serif;letter-spacing:1px;color:#9a7851;white-space:nowrap}.nc-main .nc-step-heading .nc-lesson-progress{margin:0;flex:1;height:4px}.nc-main .nc-step-heading #nc-phase{background:transparent;padding:0;font-size:14px;color:#9a7851;white-space:nowrap}.nc-main .nc-step{margin:16px 22px 13px;display:flex;align-items:center;gap:18px}.nc-main .nc-step h2{font:24px/1.4 var(--serif);white-space:nowrap;margin:0;color:#6e4b32}.nc-main .nc-step p{font-size:17px;line-height:1.6;margin:0;color:#897053}.nc-stage-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:0 22px 12px}.nc-stage-toolbar>span{font-size:14px;color:#a38c6a}.nc-stage-toolbar>div{display:flex;gap:7px;align-items:center}.nc-stage-toolbar button{border:1px solid #e2d4bd;border-radius:8px;background:#fbf3e4;color:#95734c;min-height:44px;padding:8px 12px;font-size:15px}.nc-stage-toolbar button:disabled{opacity:.45}.nc-stage-toolbar button[hidden]{display:none}.nc-main .nc-canvas{max-height:455px;background:radial-gradient(ellipse at 50% 45%,#f7f2e8,#e4d8c1)}.nc-main .nc-canvas svg{max-height:455px}.nc-main .nc-canvas.is-watching,.nc-main .nc-canvas.is-paused{pointer-events:none}.nc-canvas:focus-within{outline:2px solid #b48343;outline-offset:-5px}.nc-main .nc-canvas.step-passed{background:radial-gradient(ellipse at 50% 45%,#f4f2df,#e4dbc4)}.nc-stage-dock{display:flex;align-items:center;gap:18px;justify-content:space-between;padding:15px 22px;min-height:77px;background:#f5ebd8;border-top:1px solid #e3d4bb}.nc-main .nc-stage-dock .nc-feedback{border:0;background:none;margin:0;padding:0;color:#99805e;font-size:16px;line-height:1.6;flex:1;min-width:0}.nc-main .nc-stage-dock .nc-feedback.success{color:#6b7d52}.nc-main .nc-stage-dock .nc-feedback.error{color:#a34b36}.nc-stage-dock #nc-next{border:1px solid #a84c34;border-radius:9px;background:#a84c34;box-shadow:0 4px 0 #883c2920;padding:13px 24px;min-height:48px;color:#fff9e9;font-size:17px;min-width:124px;white-space:nowrap}.nc-stage-dock #nc-next:hover{background:#963e2c}.nc-stage-dock #nc-next[hidden]{display:none}.nc-extra-tools{display:flex;flex-wrap:wrap;gap:15px;align-items:center;margin-top:18px}.nc-extra-tools .nc-view-switch{margin:0}.nc-extra-tools .nc-mode button{font-size:16px;min-height:44px}.nc-main .nc-settings{padding:12px 22px 14px;background:#faf4e9}.nc-main .nc-settings summary{font-size:15px}.nc-main .nc-settings-grid{margin-top:18px}.nc-lesson-notes,.nc-references{margin-top:15px}.nc-canvas.is-paused .nc-target-ring{animation-play-state:paused}
@media(max-width:600px){.nc-topline{margin-bottom:16px}.nc-topline h1{font-size:27px}.nc-topline>span{font-size:14px}.nc-course-switch{flex-wrap:nowrap;padding:11px 13px;gap:10px;margin-bottom:15px}.nc-course-switch label{font-size:0;line-height:1;white-space:nowrap}.nc-course-switch label span{font-size:14px;margin-left:0}.nc-course-switch select{order:0;flex-basis:auto;font-size:16px;padding:10px;min-height:44px}.nc-course-time{display:none}.nc-main .nc-step-heading{padding:15px 16px 0;gap:11px}.nc-main .nc-step-heading #nc-phase{font-size:13px}.nc-main .nc-step{margin:14px 16px 12px;gap:12px;align-items:start}.nc-main .nc-step h2{font-size:22px;line-height:1.5}.nc-main .nc-step p{font-size:17px;line-height:1.6}.nc-stage-toolbar{padding:0 16px 10px;gap:7px}.nc-stage-toolbar>span{font-size:13px}.nc-stage-toolbar>div{gap:5px}.nc-stage-toolbar button{font-size:14px;padding:8px 10px;min-height:44px}.nc-main .nc-canvas svg{max-height:none}.nc-stage-dock{padding:12px 16px;gap:12px;min-height:74px}.nc-main .nc-stage-dock .nc-feedback{font-size:16px}.nc-stage-dock #nc-next{font-size:17px;padding:12px 16px;min-width:100px}.nc-main .nc-settings{padding:12px 16px}.nc-extra-tools{gap:12px}.nc-extra-tools .nc-view-switch button{font-size:15px;padding:10px 13px}.nc-extra-tools .nc-mode button{font-size:15px;padding:10px 13px}}