:root{--bg:#f5f5f7;--card:#fff;--ink:#1d1d1f;--muted:#6e6e73;--line:#dedee3;--blue:#0071e3;--orange:#ef6a47;--green:#34c759}*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Noto Sans TC",sans-serif;-webkit-font-smoothing:antialiased}.app{max-width:430px;min-height:100vh;margin:auto;padding:calc(15px + env(safe-area-inset-top)) 16px calc(36px + env(safe-area-inset-bottom))}.top{display:flex;justify-content:space-between;align-items:center}.eyebrow{color:var(--muted);font-size:13px;font-weight:650}.top h1{font-size:30px;letter-spacing:-.8px;line-height:1.08;margin:4px 0 16px}.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:#fff;font-weight:800}.days{display:grid;grid-template-columns:repeat(3,1fr);background:#e8e8ed;padding:3px;border-radius:12px;margin-bottom:14px}.days button{min-height:44px;border:0;background:transparent;border-radius:9px;color:var(--muted);font-weight:750}.days button.active{background:#fff;color:var(--ink);box-shadow:0 1px 5px #0002}.progress-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin:0 2px 7px}.progress{height:6px;background:var(--line);border-radius:99px;overflow:hidden;margin-bottom:14px}.progress i{display:block;width:20%;height:100%;background:var(--blue);border-radius:99px;transition:width .25s}.exercise-card{background:var(--card);border-radius:23px;overflow:hidden;box-shadow:0 10px 35px #00000012}.visual{position:relative;background:#0b192e}.visual img{display:block;width:100%;height:auto;aspect-ratio:3/4;object-fit:contain;cursor:zoom-in;touch-action:pinch-zoom}.muscle{position:absolute;top:12px;left:12px;padding:7px 10px;border-radius:99px;background:#fffffff0;backdrop-filter:blur(10px);font-size:12px;font-weight:750}.content{padding:18px}.chips{display:flex;gap:7px;margin-bottom:8px}.chips span{padding:5px 9px;border-radius:99px;background:#eaf4ff;color:#0066cc;font-size:11px;font-weight:750}.content h2{font-size:25px;letter-spacing:-.5px;line-height:1.13;margin:0}.english{color:var(--muted);font-size:13px;margin:5px 0 15px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.metrics div{background:var(--bg);border-radius:13px;padding:10px}.metrics small{display:block;color:var(--muted);font-size:10px}.metrics b{display:block;font-size:17px;margin-top:2px}.set-dots{display:flex;gap:9px;margin:16px 0}.set-dots button{width:44px;height:44px;border:0;border-radius:50%;background:#ececf1;color:var(--muted);font-weight:800}.set-dots button.active{background:var(--blue);color:#fff;box-shadow:0 0 0 4px #0071e322}.set-dots button.done{background:var(--green);color:#fff}.inputs{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}.inputs label{position:relative;background:var(--bg);border-radius:13px;padding:8px 9px;color:var(--muted);font-size:10px}.inputs input{display:block;width:100%;border:0;outline:0;background:transparent;color:var(--ink);font:750 20px -apple-system;margin-top:2px;padding:0 25px 0 0}.inputs span{position:absolute;right:8px;bottom:10px;font-size:10px}.complete{width:100%;min-height:56px;border:0;border-radius:17px;background:var(--blue);color:#fff;font-size:16px;font-weight:800;margin-top:13px}.tip{text-align:center;color:var(--muted);font-size:12px;line-height:1.45;margin:10px 0 0}.exercise-list{margin-top:18px}.exercise-list header{display:flex;justify-content:space-between;align-items:end;margin:0 2px 8px}.exercise-list h3{font-size:18px;margin:0}.exercise-list header span{font-size:11px;color:var(--muted)}[data-exercise-list]{display:grid;gap:7px}[data-exercise]{display:grid;grid-template-columns:34px 1fr auto;align-items:center;min-height:54px;padding:7px 11px;border:0;border-radius:14px;background:#fff;color:var(--ink);text-align:left;font-weight:650}[data-exercise] i{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--bg);font-style:normal;color:var(--muted)}[data-exercise] small{color:var(--muted);font-weight:500}[data-exercise].active{box-shadow:0 0 0 2px var(--blue) inset}.bottom-nav{position:fixed;z-index:4;left:50%;bottom:0;transform:translateX(-50%);width:min(430px,100%);display:grid;grid-template-columns:repeat(3,1fr);background:#ffffffdd;backdrop-filter:blur(22px);border-top:1px solid #0001;padding:9px 10px calc(9px + env(safe-area-inset-bottom))}.bottom-nav button{min-height:44px;border:0;background:none;color:var(--muted);font-size:11px}.bottom-nav .active{color:var(--blue);font-weight:800}.rest-overlay{position:fixed;z-index:20;inset:0;background:var(--orange);color:#fff;padding:calc(24px + env(safe-area-inset-top)) 20px calc(22px + env(safe-area-inset-bottom));display:flex;flex-direction:column;transform:translateY(101%);transition:transform .38s cubic-bezier(.2,.8,.2,1)}.rest-overlay.open{transform:none}.rest-overlay header{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:800;letter-spacing:1px}.rest-overlay header button{width:44px;height:44px;border:1px solid #ffffff66;border-radius:50%;background:transparent;color:#fff;font-size:20px}.next{text-align:center;margin-top:34px}.next small{opacity:.75}.next h2{font-size:26px;margin:6px 0 3px}.next p{margin:0;opacity:.8}.clock{font-size:104px;line-height:1;text-align:center;font-weight:900;letter-spacing:-8px;font-variant-numeric:tabular-nums;margin:auto 0 16px}.presets{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.presets button{min-height:46px;border:1px solid #ffffff77;border-radius:99px;background:transparent;color:#fff;font-weight:800}.presets button.active{background:#fff;color:var(--orange)}.timer-controls{display:grid;grid-template-columns:1fr 1.35fr 1fr;gap:8px;margin-top:10px}.timer-controls button{min-height:56px;border:0;border-radius:18px;background:#ffffff22;color:#fff;font-weight:800}.timer-controls .pause{background:#fff;color:var(--orange)}.end-rest{min-height:57px;margin-top:10px;border:0;border-radius:18px;background:var(--ink);color:#fff;font-size:16px;font-weight:800}.rest-message{text-align:center;height:20px;margin:10px 0 0;font-weight:750}.clock.finished{animation:pulse .8s infinite alternate}@keyframes pulse{to{transform:scale(1.025)}}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button:active{transform:scale(.985)}button:focus-visible,input:focus-visible{outline:3px solid #0a84ff88;outline-offset:2px}.zoom-hint{position:absolute;right:12px;bottom:12px;padding:7px 10px;border-radius:99px;background:#000b;color:#fff;font-size:12px;font-weight:750}.alternative{margin:8px 0 15px;padding:10px 12px;border-radius:12px;background:#f1f7ed;color:#31582c;font-size:13px;font-weight:700}.image-viewer{position:fixed;z-index:40;inset:0;display:none;align-items:center;justify-content:center;flex-direction:column;background:#050608f5;padding:calc(60px + env(safe-area-inset-top)) 12px calc(30px + env(safe-area-inset-bottom))}.image-viewer.open{display:flex}.image-viewer img{display:block;max-width:100%;max-height:calc(100vh - 130px - env(safe-area-inset-top) - env(safe-area-inset-bottom));width:auto;height:auto;object-fit:contain;touch-action:pinch-zoom}.image-viewer button{position:absolute;top:calc(10px + env(safe-area-inset-top));right:14px;width:48px;height:48px;border:1px solid #ffffff66;border-radius:50%;background:#ffffff1c;color:#fff;font-size:25px}.image-viewer p{color:#fff9;font-size:12px;margin:10px 0 0}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}