:root{color-scheme:light;--bg:#f6f5f0;--surface:#fff;--soft:#edf1e9;--ink:#203c35;--muted:#59675f;--line:#d7ded6;--primary:#235b47;--on-primary:#fff;--accent:#f4e5c9;--accent-ink:#65491e;--focus:#855a14;--hero:#e4ecdf;--hero-circle:#d2dfcc;--shadow:0 12px 36px #203c3508}
    :root[data-theme="dark"]{color-scheme:dark;--bg:#121c19;--surface:#1a2822;--soft:#23352c;--ink:#edf3e9;--muted:#b3c1b7;--line:#394b40;--primary:#bcdaa0;--on-primary:#18291c;--accent:#3d3422;--accent-ink:#eed6a4;--focus:#eed6a4;--hero:#283d2c;--hero-circle:#385139;--shadow:none}
    *{box-sizing:border-box} [hidden]{display:none!important}
    html{-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;background:var(--bg)}
    body{margin:0;font:16px/1.65 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}
    button,input,textarea,select{font:inherit} button,a,select,input[type="checkbox"]{touch-action:manipulation}
    button{cursor:pointer;min-height:44px;border:0;color:inherit;background:none;border-radius:10px;padding:10px 16px;font-weight:600;user-select:none;-webkit-user-select:none;transition:background .14s,transform .14s}
    button:active{transform:translateY(1px);filter:brightness(.94)}
    :focus-visible{outline:3px solid var(--focus);outline-offset:4px} input:focus-visible,textarea:focus-visible{outline-offset:1px}
    a{color:inherit} h1,h2,h3,p{margin:0} h1{font-size:36px;letter-spacing:-1.5px;line-height:1.3} h2{font-size:22px;letter-spacing:-.5px} h3{font-size:17px}
    .muted{color:var(--muted)} .small{font-size:13px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:650;text-transform:uppercase;color:var(--muted)}
    .app{min-height:100dvh;display:grid;grid-template-columns:224px minmax(0,1fr)}
    .sidebar{border-right:1px solid var(--line);padding:40px 24px 24px;display:flex;flex-direction:column;gap:36px;position:sticky;top:0;height:100dvh;background:var(--surface)}
    .brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:700;letter-spacing:2px}.brand svg{width:27px;height:27px}
    .brand small{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);font-weight:500}
    .nav{display:flex;flex-direction:column;gap:10px}.nav button{display:flex;gap:14px;align-items:center;text-align:left;color:var(--muted);font-weight:500}
    svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
    .nav button[aria-current="page"]{background:var(--soft);color:var(--ink);font-weight:700}
    .sidebar-note{margin-top:auto;border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:12px}
    .workspace{min-width:0;max-width:1460px;width:100%;margin:auto;padding:30px clamp(24px,4vw,64px) 48px}
    .topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding-bottom:23px;margin-bottom:36px}
    .prototype-label{font-size:12px;display:flex;align-items:center;gap:8px;letter-spacing:.5px}.dot{width:6px;height:6px;border-radius:50%;background:var(--primary)}
    .appearance{display:flex;align-items:center;gap:12px}.appearance-label{font-size:12px;color:var(--muted)}
    .theme-picker{display:flex;gap:3px;padding:4px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
    .theme-picker button{display:flex;align-items:center;gap:7px;font-size:12px;min-height:44px;padding:6px 11px;border-radius:8px;font-weight:500;color:var(--muted)}
    .theme-picker svg{width:15px;height:15px}.theme-picker button[aria-pressed="true"]{background:var(--soft);color:var(--ink);font-weight:700}
    .heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}.heading p{margin-top:8px;color:var(--muted);font-size:14px}.heading .eyebrow{margin-bottom:9px}
    .pill{display:inline-flex;padding:5px 10px;border:1px solid var(--line);border-radius:7px;font-size:12px;white-space:nowrap}
    .columns{display:grid;grid-template-columns:minmax(0,1fr) 276px;gap:28px;align-items:start}
    .hero{position:relative;overflow:hidden;background:var(--hero);border-radius:20px;padding:32px;min-height:288px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .hero-copy{position:relative;z-index:1;max-width:360px}.hero h2{font-size:30px;line-height:1.4;margin:15px 0 10px;letter-spacing:-1px}.hero p{font-size:14px;max-width:290px;color:var(--muted)}
    .hero .pill{background:var(--surface);border:none}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}
    .primary{background:var(--primary);color:var(--on-primary);display:inline-flex;align-items:center;justify-content:center;gap:12px}.secondary{background:var(--surface);border:1px solid var(--line)}
    .orbit{height:164px;width:164px;border-radius:50%;background:var(--hero-circle);display:grid;place-items:center;flex-shrink:0;position:relative}
    .orbit:before,.orbit:after{content:"";position:absolute;inset:15px;border:1px solid var(--primary);opacity:.24;border-radius:50%}.orbit:after{inset:30px;opacity:.4}
    .orbit svg{width:56px;height:56px;stroke-width:1.2;color:var(--primary)}
    .section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:30px 0 14px}.section-heading h2{font-size:18px}.text-button{font-size:13px;color:var(--primary);padding:8px 0}
    .exercise-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
    .exercise{display:flex;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
    .exercise-index{font-size:13px;color:var(--muted);width:26px;font-variant-numeric:tabular-nums}.exercise-detail{flex:1;min-width:0}.exercise-detail p{font-size:13px;color:var(--muted);margin-top:3px}.exercise-tag{font-size:11px;background:var(--soft);border-radius:6px;padding:4px 8px}
    .card{padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
    .week{display:flex;gap:6px;justify-content:space-between;margin:20px 0 14px}.day{display:flex;flex-direction:column;align-items:center;font-size:11px;color:var(--muted);gap:10px;min-width:24px}.day b{width:27px;height:27px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-weight:500}.day.current b{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}
    .rule{border:0;border-top:1px solid var(--line);margin:18px 0}.tip{margin-top:18px;padding:20px;background:var(--accent);color:var(--accent-ink);border-radius:16px}.tip h3{font-size:14px;margin-bottom:7px}.tip p{font-size:13px;line-height:1.8}
    .legend{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:11px}.legend span{width:6px;height:6px;border-radius:50%;background:var(--primary)}
    .footer-note{margin-top:22px;font-size:12px;color:var(--muted);line-height:1.9}
    .mode-picker{display:flex;gap:5px;background:var(--soft);padding:5px;border-radius:12px;width:fit-content;margin-bottom:14px}.mode-picker button{font-size:14px;min-height:44px;font-weight:500}.mode-picker button[aria-pressed="true"]{background:var(--surface);box-shadow:var(--shadow);font-weight:650}
    .record-header{margin:26px 0 16px;display:flex;justify-content:space-between;align-items:center;gap:12px}
    .record-table{width:100%;border-collapse:collapse;text-align:left;font-size:14px;table-layout:fixed}.record-table th{font-size:12px;color:var(--muted);font-weight:500;padding:0 6px 10px;border-bottom:1px solid var(--line)}
    .record-table td{padding:14px 6px;border-bottom:1px solid var(--line)}.record-table th:first-child{width:42px}.record-table th:last-child{width:60px;text-align:center}.record-table td:last-child{text-align:center}
    input[type="number"],textarea{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:10px;width:100%;min-width:0;min-height:44px;font-size:16px;font-variant-numeric:tabular-nums}
    input[type="checkbox"]{width:22px;height:22px;accent-color:var(--primary);margin:0;cursor:pointer}.check-label{display:grid;place-items:center;min-width:44px;min-height:44px;cursor:pointer}
    .notes-label{display:block;font-size:13px;margin:22px 0 8px}textarea{resize:vertical;min-height:90px}.record-footer{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px}.record-footer .small{flex:1;min-width:140px}
    .summary-number{font-size:44px;letter-spacing:-2px;line-height:1.2;margin:18px 0 10px;font-variant-numeric:tabular-nums}.summary-number span{font-size:16px;letter-spacing:0;color:var(--muted)}
    .plan-intro{max-width:650px;font-size:15px;color:var(--muted);margin-bottom:25px}.plan-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.plan-step .eyebrow{margin-bottom:18px}.plan-step h3{margin-bottom:10px}.plan-step p{font-size:13px;color:var(--muted)}
    .plan-detail{margin-top:24px}.plan-detail p{color:var(--muted);font-size:14px;margin-top:8px}.plan-detail .primary{margin-top:20px}
    .result{margin-top:16px;border-left:3px solid var(--primary);padding:12px 16px;background:var(--soft);font-size:14px}
    .mobile-nav{display:none}.mobile-brand{display:none}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
    @media(hover:hover) and (pointer:fine){button:hover{background:var(--soft)}.primary:hover{background:var(--primary);filter:brightness(.94)}.nav button:hover{color:var(--ink)}.text-button:hover{background:transparent;text-decoration:underline}}
    @media(min-width:1500px){.hero{padding:40px}.hero h2{font-size:35px}.orbit{width:190px;height:190px}}
    @media(max-width:1150px){.app{grid-template-columns:180px minmax(0,1fr)}.sidebar{padding:32px 16px}.workspace{padding:24px 28px 36px}.columns{grid-template-columns:minmax(0,1fr)}.aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.tip{margin:0}.aside>.footer-note{grid-column:1/-1;margin:0}.hero{min-height:260px}.week{justify-content:flex-start;gap:15px}.plan-steps{gap:12px}.plan-step{padding:18px}}
    @media(max-width:700px){.app{display:block}.sidebar{display:none}.workspace{padding:16px 20px calc(100px + env(safe-area-inset-bottom,0px))}.topbar{padding-top:env(safe-area-inset-top,0px);padding-bottom:15px;margin-bottom:25px;gap:8px;flex-wrap:wrap}.prototype-label{font-size:11px}.appearance{gap:0}.appearance-label{display:none}.theme-picker button{padding:6px 9px;min-height:44px}.theme-picker button svg{display:none}.heading{margin-bottom:22px}.heading .pill{display:none}h1{font-size:29px}.heading p{font-size:13px}.hero{padding:24px;min-height:250px;border-radius:17px;align-items:flex-start}.hero h2{font-size:27px}.hero-copy{max-width:100%}.hero p{max-width:235px}.orbit{position:absolute;width:124px;height:124px;right:-37px;top:48px;opacity:.55}.orbit svg{width:40px;height:40px}.hero-copy{padding-right:20px}.hero-actions{margin-top:22px;gap:8px}.hero-actions button{padding:11px 14px;font-size:14px}.columns{gap:22px}.aside{display:block}.aside .tip{margin-top:16px}.aside>.footer-note{margin-top:16px}.card{padding:20px}.section-heading{margin-top:25px}.exercise{gap:10px}.exercise-tag{font-size:10px}.exercise-detail h3{font-size:15px}.exercise-detail p{font-size:12px}.week{justify-content:space-between;gap:8px}.mobile-nav{display:grid;grid-template-columns:repeat(3,1fr);position:fixed;bottom:0;left:0;right:0;z-index:10;background:var(--surface);border-top:1px solid var(--line);padding:7px 12px calc(7px + env(safe-area-inset-bottom,0px))}.mobile-nav button{display:flex;flex-direction:column;align-items:center;gap:3px;border-radius:9px;font-size:11px;padding:6px;min-height:50px;color:var(--muted)}.mobile-nav button[aria-current="page"]{color:var(--primary);background:var(--soft)}.plan-steps{grid-template-columns:1fr}.plan-step{display:grid;grid-template-columns:32px 1fr;gap:4px 12px}.plan-step .eyebrow{grid-row:1/3;margin:0}.plan-step h3{margin:0}.plan-step p{grid-column:2}.record-table td{padding:12px 3px}.record-table th{padding:0 3px 10px}.record-table th:first-child{width:28px}.record-table th:last-child{width:48px}.record-table input{padding:9px 7px}.record-table .target{font-size:12px}.mode-picker{width:100%;display:grid;grid-template-columns:1fr 1fr}.record-footer .primary{width:100%}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important}}
  /* Extensions to the approved light/dark visual system. */
.flow-steps{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.flow-steps span{font-size:13px;padding:6px 12px;border-radius:8px;color:var(--muted);background:var(--soft)}
.flow-steps [aria-current="step"]{background:var(--primary);color:var(--on-primary)}
.flow-body{max-width:850px}.flow-body fieldset{border:0;margin:0 0 22px;padding:0;min-width:0}
.flow-body legend{font-size:18px;font-weight:650;margin-bottom:14px}
.goal-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.goal-option{display:flex;gap:12px;padding:18px;border:1px solid var(--line);border-radius:12px;cursor:pointer;background:var(--surface);align-items:flex-start}
.goal-option:has(:checked){border-color:var(--primary);background:var(--soft)}
.goal-option input{margin-top:6px;accent-color:var(--primary);width:18px;height:18px;flex-shrink:0}
.goal-option strong{display:block;font-size:16px}.goal-option small{display:block;color:var(--muted);font-size:13px;margin-top:4px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:8px;font-size:14px;min-width:0}.field.wide,.form-grid>.wide{grid-column:1/-1}
.field input,.field select{min-width:0;width:100%;min-height:46px;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--ink);padding:10px;font-size:16px}
.field small{color:var(--muted);font-size:12px}.days{display:flex;flex-wrap:wrap;gap:8px}
.day-option{display:flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:8px;min-height:44px;padding:8px 11px;font-size:14px;cursor:pointer}
.day-option:has(:checked){background:var(--soft);border-color:var(--primary)}.day-option input{accent-color:var(--primary);width:17px;height:17px}
.flow-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:24px}.flow-actions .primary{margin-left:auto}
.notice{padding:15px 18px;border-radius:12px;background:var(--accent);color:var(--accent-ink);font-size:13px;line-height:1.8;margin-bottom:22px;overflow-wrap:anywhere}
.plan-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0}.plan-meta div{font-size:14px;overflow-wrap:anywhere}.plan-meta dt{font-size:12px;color:var(--muted)}.plan-meta dd{margin:4px 0 0}
.draft-exercise{border-top:1px solid var(--line);padding-top:20px;margin-top:20px}.draft-exercise h3{margin-bottom:14px}
.dose-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.record-exercise+.record-exercise{border-top:1px solid var(--line);padding-top:14px;margin-top:24px}
.record-exercise h2{font-size:20px;overflow-wrap:anywhere}.session-controls{margin:18px 0}.session-controls .field{max-width:260px}
.timer-card{margin-top:18px}.timer-clock{font-size:42px;line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:-1px;margin:16px 0}
.timer-actions{display:flex;gap:8px;flex-wrap:wrap}.timer-actions button{font-size:13px;padding:9px 12px}.timer-card .field{margin:12px 0}
button:disabled{opacity:.5;cursor:default;transform:none}.timer-status{font-size:12px;color:var(--muted);margin-top:12px;min-height:20px}
.global-timer{position:sticky;top:8px;z-index:5;flex-wrap:wrap;display:flex;justify-content:space-between;gap:12px;align-items:center;background:var(--soft);border-radius:10px;padding:10px 16px;margin-bottom:20px;font-size:13px}
.review-list{margin:20px 0}.review-movement{padding:18px 0;border-top:1px solid var(--line)}
.review-movement h3{margin-bottom:10px;overflow-wrap:anywhere}.review-row{display:flex;flex-wrap:wrap;gap:8px 16px;padding:8px 0;font-size:13px;color:var(--muted)}
.review-row strong{color:var(--ink);font-weight:500}.review-note{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--soft);border-radius:10px;padding:16px;font-size:14px}
.history-list{list-style:none;padding:0;margin:18px 0}.history-list li{border-top:1px solid var(--line);padding:14px 0;display:flex;gap:12px;justify-content:space-between;align-items:center}
.history-list p{font-size:13px;color:var(--muted)}.history-list button{font-size:13px}.entry-panel{margin:20px 0}.entry-panel h2{margin-bottom:8px}.entry-panel p{font-size:14px;color:var(--muted)}
.form-error{color:var(--accent-ink);background:var(--accent);border-radius:10px;padding:12px;margin-top:16px;font-size:14px}
@media(max-width:700px){.goal-grid,.form-grid{grid-template-columns:1fr}.goal-option{padding:15px}.flow-actions .primary{width:100%;margin-left:0}.flow-actions .secondary{flex:1}.plan-meta{grid-template-columns:1fr}.dose-grid{gap:10px}.day-option{padding:8px 9px}.timer-card{margin-top:16px}.history-list li{align-items:flex-start}.record-table th:first-child{width:28px}.record-table th:last-child{width:48px}.global-timer{padding:10px 12px}.flow-steps{gap:5px}.flow-steps span{font-size:12px;padding:6px 9px}}


.account-bar,.save-bar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:20px;font-size:14px}.save-bar{padding:12px 16px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.save-bar span{flex:1;min-width:160px}.account-bar form{margin:0}.account-bar a{color:var(--primary)}.auth-shell{max-width:520px;margin:6vh auto;padding:24px}.auth-shell .card{padding:28px}.auth-shell h1{font-size:28px;margin-bottom:12px}.auth-shell p{margin:14px 0}.auth-shell label{display:block;margin:18px 0 8px}.auth-shell input{display:block;width:100%;padding:12px;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:10px;min-height:46px}.auth-shell .helptext{display:block;font-size:13px;color:var(--muted);margin-top:8px}.auth-shell ul{padding-left:20px}.auth-shell .errorlist{color:var(--ink);background:var(--soft);padding:12px 12px 12px 28px;border-radius:8px}.auth-links{display:flex;flex-wrap:wrap;gap:20px}.auth-links a{color:var(--primary);padding:10px 0;min-height:44px}.recovery-key{overflow-wrap:anywhere;padding:18px;background:var(--soft);font-family:monospace;font-size:18px;user-select:all}.conflict-card{padding:20px;border:1px solid var(--line);border-radius:12px;margin-bottom:14px}.conflict-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}.conflict-columns pre{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit;font-size:14px}.account-name{overflow-wrap:anywhere}.save-error{font-weight:600}#app-shell[aria-busy=true] [data-panel]{opacity:.6}button:disabled{opacity:.55;cursor:not-allowed}@media(max-width:700px){.conflict-columns{grid-template-columns:1fr}.auth-shell{margin:20px auto;padding:16px}.account-bar{gap:8px}.save-bar{align-items:stretch}}