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:root{--upright-ink:#14231e;--upright-ink-soft:#43544c;--upright-muted:#66756e;--upright-muted-strong:#7c8983;--upright-bg:#f5f6f1;--upright-bg-warm:#fbf8f2;--upright-surface:#fff;--upright-green-900:#164c3d;--upright-green-700:#23735b;--upright-green-500:#38a17e;--upright-green-300:#8dd6bd;--upright-green-100:#dcf2e9;--upright-coral-600:#dd684f;--upright-coral-400:#f18469;--upright-coral-100:#fce8e2;--upright-gold-500:#ddaf48;--upright-gold-100:#f8edce;--upright-sky-500:#4e94a6;--upright-sky-100:#dbeef1;--upright-border:#14231e1a;--upright-border-strong:#14231e2e;--shadow-soft:0 16px 40px #14231e12;--shadow-strong:0 24px 48px #14231e1f;--radius-xl:28px;--radius-lg:22px;--radius-md:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:radial-gradient(circle at 15% 0%, #38a17e1a, transparent 30%), radial-gradient(circle at 95% 10%, #f184691a, transparent 28%), var(--upright-bg);min-height:100vh;color:var(--upright-ink);font-family:var(--font-geist-sans), "Segoe UI", 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h3,.demo-panel h1,.config-panel h3{letter-spacing:-.06em;margin:8px 0 10px}.info-card h3,.summary-card h3{font-size:clamp(1.4rem,2vw,2rem)}.metric-card strong{letter-spacing:-.07em;margin:8px 0 4px;font-size:clamp(2rem,3vw,3rem);display:block}.metric-card small{color:var(--upright-ink-soft);font-size:.8rem}.exercise-panel{border:1px solid var(--upright-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-soft);background:#ffffff9e;margin-top:26px;padding:22px}.panel-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;display:flex}.panel-heading h3{font-size:clamp(1.4rem,2vw,2.2rem)}.compact-heading{margin-bottom:14px}.exercise-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.exercise-card{border:1px solid var(--upright-border);border-radius:var(--radius-lg);background:#fffc;flex-direction:column;gap:16px;padding:20px;display:flex;box-shadow:0 10px 22px 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#0000}.text-link{color:var(--upright-green-900);font-weight:700}.text-link.disabled{color:var(--upright-ink-soft);opacity:.7}.setup-shell{padding-top:16px}.setup-layout{grid-template-columns:1.15fr .85fr;gap:22px;margin-top:22px;display:grid}.demo-panel,.config-panel{border:1px solid var(--upright-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-soft);background:#ffffffb3;padding:22px}.demo-panel h1{letter-spacing:-.07em;margin-top:0;font-size:clamp(2rem,3vw,3rem)}.demo-stage{background:linear-gradient(135deg,#dcf2e9b3,#f9f8f2cc);border:1px solid #14231e14;border-radius:24px;place-items:center;min-height:300px;margin-top:18px;padding:22px;display:grid}.arm-demo-figure{filter:drop-shadow(0 12px 20px #14231e14);width:min(100%,380px);height:auto}.demo-arm,.demo-forearm{transform-box:fill-box;transform-origin:50%;animation:3.2s ease-in-out infinite arm-lift}.demo-forearm{animation-delay:.12s}@keyframes arm-lift{0%,to{transform:rotate(18deg)}22%{transform:rotate(28deg)}50%{transform:rotate(-8deg)}72%{transform:rotate(-24deg)}88%{transform:rotate(8deg)}}.demo-copy{color:var(--upright-ink-soft);margin-top:18px;line-height:1.7}.back-link{color:var(--upright-green-900);align-items:center;gap:8px;margin-bottom:18px;font-weight:700;display:inline-flex}.setup-instructions{background:linear-gradient(135deg,#dcf2e9b3,#ffffffe6);border:1px solid #14231e14;border-radius:20px;margin-top:18px;padding:20px}.setup-instructions h2{letter-spacing:-.06em;margin:0 0 10px;font-size:clamp(1.5rem,2vw,2.1rem)}.setup-instructions p,.setup-instructions li{color:var(--upright-ink-soft);line-height:1.7}.setup-instructions ul{margin:14px 0 0;padding-left:1.25rem}.config-panel{flex-direction:column;gap:20px;display:flex}.config-stack{flex-direction:column;gap:16px;display:flex}.config-card{padding:18px}.choice-row{flex-wrap:wrap;gap:10px;margin-top:12px;display:flex}.choice-pill,.choice-toggle,.step-button{border:1px solid var(--upright-border);color:var(--upright-ink);background:#ffffffb3;border-radius:12px;transition:border-color .18s,background .18s,transform .18s}.choice-pill{min-height:46px;padding:0 14px;font-weight:700}.choice-pill.selected,.choice-toggle.selected{color:#fff;background:linear-gradient(#176b52,#125943);border-color:#12594333;box-shadow:0 10px 22px #176b522e}.goal-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.choice-toggle{min-height:38px;padding:0 12px;font-size:.8rem;font-weight:700}.stepper{grid-template-columns:60px minmax(0,1fr) 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56px;align-items:center;gap:8px;display:grid}.session-duration-control input{border:1px solid var(--upright-border);width:100%;min-height:54px;color:var(--upright-ink);text-align:center;background:#fffc;border-radius:12px;font-size:1.4rem;font-weight:700}.seconds-label{color:var(--upright-ink-soft);text-align:center;font-size:.8rem}.goal-reps-header{justify-content:space-between;align-items:center;gap:10px;display:flex}.goal-mode-button{border:1px solid var(--upright-border);min-height:38px;color:var(--upright-ink-soft);background:#ffffffb3;border-radius:999px;padding:0 12px}.goal-mode-button.is-selected{color:var(--upright-green-900);background:#38a17e1a}.goal-reps-control{grid-template-columns:56px minmax(0,1fr) 56px;align-items:center;gap:8px;display:grid}.goal-reps-output{border:1px solid var(--upright-border);letter-spacing:-.07em;background:#fffc;border-radius:12px;place-items:center;min-height:58px;font-size:1.8rem;font-weight:700;display:grid}.goal-reps-output.is-null{letter-spacing:0;font-size:1rem}.setup-message{color:var(--upright-ink-soft);margin:20px 0 0;line-height:1.7}.camera-stage{aspect-ratio:4/3;width:min(100%,860px);min-height:420px;box-shadow:var(--shadow-strong);background:#121a18;border:1px solid #14231e1f;border-radius:24px;margin:0 auto;position:relative;overflow:hidden}.camera-feed{object-fit:contain;object-position:center;background:linear-gradient(#101816f5,#162723e0);width:100%;height:100%;position:absolute;inset:0;transform:scaleX(-1)}.angle-readout{z-index:10;color:#fff;background:#0a11108f;border:1px solid #ffffff29;border-radius:14px;flex-direction:column;gap:2px;min-width:116px;padding:10px 14px;display:flex;position:absolute;top:18px;left:18px}.angle-readout-label{color:#ffffffc7;font-family:var(--font-geist-mono), monospace;letter-spacing:.08em;text-transform:uppercase;font-size:.72rem}.angle-readout strong{letter-spacing:-.06em;font-size:clamp(2.5rem,5vw,4rem);line-height:1}.stage-message{z-index:4;color:#f7fbf6;text-align:center;background:#121a1894;place-content:center;justify-items:center;gap:14px;display:grid;position:absolute;inset:0}.pulse-ring{border:1px solid #8dd6bde6;border-radius:50%;width:34px;height:34px;box-shadow:0 0 0 10px #38a17e26}.countdown-overlay{z-index:8;text-align:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:#fff;background:#080e0d85;place-items:center;gap:10px;display:grid;position:absolute;inset:0}.countdown-number{letter-spacing:-.08em;font-size:clamp(4rem,14vw,10rem);font-weight:700;line-height:.9}.countdown-copy,.countdown-status{color:#fffc;max-width:460px;line-height:1.6}.camera-action-stack{z-index:10;justify-content:flex-start;align-items:end;gap:12px;display:flex;position:absolute;inset:auto 20px 18px}.camera-session-button,.camera-session-secondary{border:1px solid #ffffff14;border-radius:12px;min-height:52px;padding:0 18px;font-weight:700}.camera-session-button{background:linear-gradient(180deg, var(--upright-green-700), var(--upright-green-900));color:#fff;box-shadow:0 16px 30px #164c3d38}.camera-session-secondary{color:#fff;background:#ffffff1a}.rep-overlay{z-index:10;color:#fff;background:#0a111075;border:1px solid #ffffff1f;border-radius:16px;flex-direction:column;align-items:flex-end;min-width:164px;padding:12px 16px 14px;display:flex;position:absolute;top:18px;right:18px}.rep-label{font-size:.78rem;font-family:var(--font-geist-mono), monospace;letter-spacing:.1em;text-transform:uppercase;color:#fffc}.rep-overlay strong{letter-spacing:-.06em;align-items:baseline;margin-top:8px;font-size:clamp(2.4rem,4vw,3.6rem);line-height:1;display:flex}.rep-count{transform-origin:50%;display:inline-block}.rep-goal-separator,.rep-goal{color:#ffffffd6}.rep-state{color:#fffc;margin-top:4px;font-size:.8rem}.camera-guidance{z-index:7;color:#fff;text-align:center;background:#ffffff1f;border:1px solid #ffffff1f;border-radius:12px;padding:12px 14px;position:absolute;bottom:92px;left:20px;right:20px}.recording-badge,.stage-label,.stage-corner{z-index:9;color:#ffffffd1;font-size:.72rem;font-family:var(--font-geist-mono), monospace;letter-spacing:.09em;text-transform:uppercase;position:absolute}.stage-corner{bottom:18px;right:20px}.recording-badge{top:18px;right:18px}.encouragement-banner{color:#fff;text-align:center;background:linear-gradient(135deg,#23735bf0,#38a17ee6);border:1px solid #ffffff24;border-radius:14px;width:fit-content;max-width:100%;margin:16px auto 0;padding:16px 24px;font-size:clamp(1.25rem,2.2vw,1.75rem);font-weight:700;line-height:1.35;animation:.2s ease-out fade-slide;box-shadow:0 20px 40px #14231e2e}@keyframes fade-slide{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.live-status-row{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.live-status-row span{border:1px solid var(--upright-border);color:var(--upright-ink-soft);font-size:.7rem;font-family:var(--font-geist-mono), monospace;letter-spacing:.08em;text-transform:uppercase;background:#ffffffb3;border-radius:999px;align-items:center;padding:8px 10px;display:inline-flex}.developer-tools{border:1px solid var(--upright-border);background:#ffffffb3;border-radius:18px;margin-top:22px;padding:18px}.developer-tools summary{cursor:pointer;font-weight:700}.session-summary{border:1px solid var(--upright-border);box-shadow:var(--shadow-soft);background:#ffffffb3;border-radius:24px;gap:18px;margin-top:24px;padding:24px 22px 26px;display:grid}.summary-header{justify-content:space-between;align-items:flex-start;gap:18px;display:flex}.summary-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.summary-metrics{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;display:grid}.summary-metrics>div,.wearable-results-card{border:1px solid var(--upright-border);background:#f9f8f2d1;border-radius:18px;padding:16px 18px}.summary-metrics>div{flex-direction:column;gap:8px;display:flex}.summary-metrics strong{letter-spacing:-.06em;font-size:clamp(1.2rem,2vw,1.7rem)}.wearable-results-card{margin-top:4px}.panel-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.summary-table-wrap{margin-top:12px;overflow-x:auto}.summary-table{border-collapse:collapse;width:100%}.summary-table th,.summary-table td{text-align:left;border-bottom:1px solid #14231e14;padding:12px 8px}.summary-table th{color:var(--upright-ink-soft);font-family:var(--font-geist-mono), monospace;letter-spacing:.08em;text-transform:uppercase;font-size:.72rem}.save-message,.save-error,.loading-state{margin:16px 0 0;font-weight:600}.save-message{color:var(--upright-green-900)}.save-error{color:var(--upright-coral-600)}.progress-page{padding-top:18px}.chart-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:22px;display:grid}.chart-card,.detail-card{margin-top:22px;padding:22px}.chart-panel{margin-top:0}.chart-shell{padding:10px 4px 0}.trend-chart{width:100%;height:auto;min-height:180px}.chart-axis-label{fill:var(--upright-ink-soft);font-size:11px;font-family:var(--font-geist-mono), monospace;letter-spacing:.06em}.chart-value-label{fill:var(--upright-green-900);font-size:11px;font-weight:700;font-family:var(--font-geist-mono), monospace}.chart-trend-pill{color:var(--upright-ink-soft);font-size:.72rem;font-family:var(--font-geist-mono), monospace;letter-spacing:.08em;text-transform:uppercase;background:#ffffffb3;border:1px solid #14231e14;border-radius:999px;align-items:center;padding:8px 10px;display:inline-flex}.chart-trend-pill.is-positive{color:var(--upright-green-900);background:#dcf2e9e6}.chart-trend-pill.is-negative{color:#6f5a2d;background:#f8edcee6}.chart-trend-pill.is-neutral{color:var(--upright-ink-soft);background:#e8eceae6}.chart-empty{color:var(--upright-ink-soft);padding:18px}.history-layout{grid-template-columns:.9fr 1.1fr;gap:22px;margin-top:22px;display:grid}.history-list{padding:18px}.history-item{text-align:left;background:#ffffffa8;border:1px solid #14231e12;border-radius:16px;flex-direction:column;gap:10px;width:100%;padding:18px;display:flex}.history-item+.history-item{margin-top:12px}.history-item.is-active{background:#dcf2e96b;border-color:#23735b47}.history-item-top,.history-item-kpis{justify-content:space-between;align-items:center;gap:10px;display:flex}.history-item-top strong{letter-spacing:-.06em;font-size:1.2rem}.history-goal{color:var(--upright-green-900);font-size:.75rem;font-family:var(--font-geist-mono), monospace;letter-spacing:.08em;text-transform:uppercase}.history-item-meta{color:var(--upright-ink-soft)}.history-item-kpis{color:var(--upright-ink-soft);font-size:.82rem}.detail-card{min-height:260px}.detail-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:18px;display:grid}.detail-box{border:1px solid var(--upright-border);background:#f9f8f2cc;border-radius:18px;padding:18px}.detail-box strong{letter-spacing:-.06em;margin-top:8px;font-size:clamp(1.5rem,2vw,2.2rem);display:block}.empty-state{border:1px solid var(--upright-border);box-shadow:var(--shadow-soft);background:#ffffffb3;border-radius:24px;margin-top:30px;padding:32px 24px}.empty-state h2{letter-spacing:-.07em;margin:10px 0;font-size:clamp(2rem,3vw,3rem)}.empty-state p{color:var(--upright-ink-soft);line-height:1.7}@media (max-width:980px){.hero-panel,.setup-layout,.history-layout,.session-setup-header,.chart-grid{grid-template-columns:1fr}.topbar{flex-wrap:wrap}.topbar-nav{margin-left:0}}@media (max-width:640px){.landing-shell,.coach-shell,.setup-shell,.progress-page{width:min(100%,100% - 20px);padding-top:14px}.hero-panel,.session-setup,.demo-panel,.config-panel,.chart-card,.detail-card,.history-list{padding:16px}.exercise-grid,.info-grid,.summary-grid,.detail-grid{grid-template-columns:1fr}.camera-action-stack{flex-wrap:wrap;justify-content:stretch;inset:auto 12px 12px}.camera-session-button,.camera-session-secondary{flex:auto}.angle-readout{min-width:96px;padding:8px 10px;top:12px;left:12px}.rep-overlay{min-width:124px;padding:10px 12px 12px;top:12px;right:12px}.rep-overlay strong{font-size:clamp(2rem,8vw,2.8rem)}.encouragement-banner{padding:14px 18px}.session-duration-control,.goal-reps-control{grid-template-columns:52px minmax(0,1fr) 52px}.session-duration-control .seconds-label{display:none}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}