:root{color:var(--text);background:var(--background);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--background:#f7f4ee;--surface:#fffefb;--primary:#31594d;--text:#263c34;--muted:#647069;--border:#dedfd7;--error:#a13d31;--soft:#eef1ea;--radius:18px;font-family:system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.65}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--primary);outline-offset:3px}h1,h2,h3,p,figure,dl,dd{margin:0}h1{letter-spacing:.02em;font-family:Songti SC,STSong,SimSun,serif;font-size:28px;font-weight:600;line-height:1.4}h2{font-size:20px;line-height:1.4}h3{font-size:16px;font-weight:600}.icon{flex-shrink:0;width:22px;height:22px}.helper{color:var(--muted);font-size:12px;line-height:1.7}.app-shell{width:100%;max-width:480px;min-height:100svh;margin-inline:auto}.app-header{justify-content:space-between;align-items:center;gap:12px;padding:27px 22px 0;display:flex}.app-brand{letter-spacing:.06em;white-space:nowrap;align-items:center;gap:9px;font-weight:600;display:inline-flex}.app-brand .icon{color:var(--primary)}.page-content{padding:32px 22px calc(112px + env(safe-area-inset-bottom))}.page-heading{flex-wrap:wrap;gap:22px;margin-bottom:22px;display:flex}.page-heading .helper{margin-top:7px;font-size:13px}.primary-button{border:1px solid var(--primary);background:var(--primary);min-height:48px;color:var(--surface);border-radius:12px;justify-content:center;align-items:center;gap:6px;padding:10px 18px;font-size:15px;font-weight:600;display:inline-flex}.primary-button:disabled{background:var(--soft);border-color:var(--border);color:var(--muted)}.new-record-button{min-height:44px}.secondary-button{min-height:44px;color:var(--primary);background:0 0;border:0;padding:8px 0;font-size:13px}.secondary-button:disabled{color:var(--muted)}.timeline-list{gap:20px;margin:0;padding:0;list-style:none;display:grid}.timeline-list>li{min-width:0}.record-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:18px;overflow:hidden}.record-date{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.record-card time{font-variant-numeric:tabular-nums;font-size:16px;font-weight:600}.demo-photo{margin-inline:-18px}.demo-photo a{display:block}.demo-photo img{object-fit:cover;width:100%;height:205px;display:block}.demo-photo figcaption{padding:7px 18px 0}.record-event{overflow-wrap:anywhere;margin-top:14px;font-size:15px}.measurements{border-top:1px solid var(--border);grid-template-columns:repeat(2,minmax(0,1fr));margin-top:18px;padding-top:14px;display:grid}.measurements>div+div{border-left:1px solid var(--border);padding-left:20px}.measurements dt{color:var(--muted);font-size:12px}.measurements dd{font-variant-numeric:tabular-nums;margin-top:2px;font-size:28px;font-weight:500;line-height:1.4}.measurements dd span{color:var(--muted);font-size:12px;font-weight:400}.record-actions{border-top:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:18px;margin:15px -18px -18px;padding:5px 18px;display:flex}.record-actions .helper{margin-left:auto}.empty-state{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);text-align:center;padding:38px 20px}.empty-illustration{background:var(--soft);width:64px;height:64px;color:var(--primary);border-radius:50%;place-items:center;margin:0 auto 20px;display:grid}.empty-illustration .icon{width:32px;height:32px}.empty-state h3{font-size:18px}.empty-state .helper{margin-top:9px;font-size:13px}.empty-state .primary-button{margin-top:24px}.record-form{gap:20px;display:grid}.form-panel{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);gap:24px;padding:20px 18px;display:grid}.form-field{gap:8px;min-width:0;display:grid}.form-field label,.measurement-group legend{justify-content:space-between;align-items:center;gap:6px;font-size:15px;display:flex}.field-required,.field-optional{white-space:nowrap;font-size:12px;font-weight:400}.field-required{color:var(--primary)}.field-optional{color:var(--muted)}input,textarea{border:1px solid var(--border);background:var(--surface);width:100%;min-width:0;max-width:100%;min-height:48px;color:var(--text);border-radius:10px;padding:10px 12px;font-size:16px}input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}textarea{resize:vertical}.measurement-group{border:0;min-width:0;margin:0;padding:0}.measurement-group legend{width:100%;margin-bottom:10px;padding:0}.measurement-fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.measurement-fields label{font-size:13px}.input-with-unit{border:1px solid var(--border);border-radius:10px;align-items:center;display:flex}.input-with-unit input{background:0 0;border:0;padding-right:2px}.input-with-unit span{color:var(--muted);white-space:nowrap;padding-right:10px;font-size:12px}.photo-button{border:1px dashed var(--border);background:var(--background);min-height:88px;color:var(--muted);border-radius:12px;justify-content:center;align-items:center;gap:10px;padding:12px;font-size:15px;display:flex}.save-action button{width:100%;min-height:52px}.save-action .helper{text-align:center;margin-top:9px}.back-button{min-height:44px;color:var(--primary);background:0 0;border:0;margin-top:8px;padding:8px 0;font-size:14px}.segmented-control{border:1px solid var(--border);background:var(--soft);border-radius:12px;gap:4px;max-width:100%;padding:4px;display:flex}.segmented-control button{min-height:44px;color:var(--muted);white-space:nowrap;background:0 0;border:0;border-radius:8px;flex:1;padding:7px 12px;font-size:14px}.segmented-control button[aria-pressed=true]{background:var(--surface);color:var(--primary);box-shadow:inset 0 -2px var(--primary);font-weight:600}.curve-panel{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);margin-top:18px;padding:18px 12px}.curve-panel h3,.curve-summary{padding-inline:5px}.curve-panel h3{margin-bottom:10px}.curve-summary{margin-bottom:16px}.curve-latest{font-variant-numeric:tabular-nums;margin-top:8px;font-size:34px;line-height:1.4}.curve-latest span{color:var(--muted);margin-left:8px;font-size:13px}.curve-panel .empty-state{border:0;padding:25px 8px}.growth-chart svg{width:100%;height:auto;display:block}.growth-chart figcaption{margin-top:8px;padding-inline:5px}.chart-grid{stroke:var(--border);stroke-width:1px}.chart-axis{stroke:var(--muted);stroke-width:1px}.chart-line{fill:none;stroke:var(--primary);stroke-width:2.5px;stroke-linejoin:round}.chart-point{fill:var(--primary);stroke:var(--surface);stroke-width:1.5px}.axis-label{fill:var(--text);font-size:16px}.axis-tick,.date-label{fill:var(--muted);font-size:15px}.point-label{fill:var(--primary);font-size:16px;font-weight:600}.curve-records{margin-top:24px}.curve-records h3{margin-bottom:8px}.curve-records dl>div{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;gap:8px;padding:12px 0;font-size:13px;display:flex}.curve-records dt{color:var(--muted)}.curve-records dd{font-weight:500}.demo-controls{border-top:1px solid var(--border);color:var(--muted);margin-top:28px}.demo-controls summary{cursor:pointer;min-height:44px;padding:12px 0;font-size:12px}.demo-controls-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin:5px 0 10px;display:flex}.demo-label{font-size:12px}.demo-controls .segmented-control{flex-shrink:0}.demo-controls .segmented-control button{font-size:12px}.bottom-navigation{z-index:10;width:100%;max-width:480px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--border);background:var(--surface);grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.bottom-navigation button{min-width:0;min-height:58px;color:var(--muted);background:0 0;border:0;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:4px;padding:6px 4px;font-size:12px;display:flex}.bottom-navigation button[aria-current=page]{background:var(--soft);color:var(--primary);box-shadow:inset 0 -2px var(--primary);font-weight:600}@media (width<=360px){.app-header{gap:8px}.measurement-fields{gap:10px}.input-with-unit input{padding-left:9px}.record-actions{gap:14px}}@media (width<=340px){.measurement-fields{grid-template-columns:minmax(0,1fr)}.app-header{flex-wrap:wrap}}.visually-hidden{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}fieldset.form-panel{min-width:0;margin:0}.feedback{border:1px solid var(--primary);color:var(--primary);background:var(--soft);border-radius:12px;margin-bottom:20px;padding:12px 16px;font-size:14px}.state-panel{gap:20px;display:grid}.state-panel .primary-button{justify-self:start}.storage-note{margin-top:28px}.child-switcher{gap:9px;margin-bottom:28px;display:grid}.field-error{color:var(--error);overflow-wrap:anywhere;font-size:12px}.error-summary{border:1px solid var(--error);color:var(--error);background:var(--surface);border-radius:12px;padding:12px 14px;font-size:14px}[aria-invalid=true]{border-color:var(--error)}.input-with-unit:has(input[aria-invalid=true]){border-color:var(--error)}.record-saved{border:2px solid var(--primary)}.record-saved:focus{outline:2px solid var(--primary);outline-offset:3px}.saved-label{color:var(--primary);margin-bottom:12px;font-size:12px;font-weight:600}.delete-error{margin-top:30px;padding-top:8px}.record-photo{margin-inline:-18px}.record-photo figcaption{padding:7px 18px 0}.photo-open{background:var(--soft);border:0;width:100%;padding:0;display:block}.photo-open img{object-fit:cover;width:100%;height:205px;display:block}.form-photo{border:1px solid var(--border);border-radius:12px;overflow:hidden}.form-photo .photo-open img{height:180px}.photo-dialog{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:min(90vw,720px);max-height:85svh;color:var(--text);padding:16px}.photo-dialog::backdrop{background:#263c34b3}.photo-dialog>button{margin-left:auto;display:block}.photo-dialog>img{object-fit:contain;width:100%;max-height:65svh;display:block}.form-field>.secondary-button{justify-self:start;align-items:center;gap:8px;display:inline-flex}.remove-photo{color:var(--error)}