*,::after,::before{box-sizing:border-box;margin:0;padding:0}:root{--primary:#07c160;--primary-dark:#06ad56;--bg:#f5f5f5;--card:#ffffff;--text:#191919;--text-secondary:#888;--border:#e5e5e5;--radius:12px;--safe-bottom:env(safe-area-inset-bottom, 0px)}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);min-height:100vh;padding-bottom:calc(24px + var(--safe-bottom))}.header{background:var(--card);padding:20px 16px 16px;text-align:center;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.header h1{font-size:1.25rem;font-weight:600}.subtitle{font-size:.8125rem;color:var(--text-secondary);margin-top:4px}.main{padding:16px;max-width:480px;margin:0 auto}.upload-section{display:flex;flex-direction:column;gap:12px}.upload-card{display:flex;align-items:center;gap:14px;background:var(--card);border:1.5px dashed var(--border);border-radius:var(--radius);padding:16px;cursor:pointer;transition:border-color .2s,background .2s;-webkit-tap-highlight-color:transparent}.upload-card:active{background:#fafafa;border-color:var(--primary)}.upload-card.has-file{border-style:solid;border-color:var(--primary);background:#f0faf4}.upload-icon{font-size:2rem;line-height:1;flex-shrink:0}.upload-text{display:flex;flex-direction:column;gap:2px;min-width:0}.upload-title{font-size:.9375rem;font-weight:500}.upload-hint{font-size:.8125rem;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.form-section{display:flex;flex-direction:column;gap:14px;background:var(--card);border-radius:var(--radius);padding:16px;margin-top:12px}.field{display:flex;flex-direction:column;gap:8px}.field-label{font-size:.875rem;font-weight:500;display:flex;justify-content:space-between;align-items:center}.field-label em{font-style:normal;color:var(--primary);font-weight:600}.field-input{width:100%;border:1.5px solid var(--border);border-radius:10px;padding:12px;font-size:1rem;color:var(--text);background:#fafafa;-webkit-appearance:none;appearance:none}.field-input:focus{outline:0;border-color:var(--primary);background:#fff}.field-range{width:100%;-webkit-appearance:none;appearance:none;height:4px;border-radius:2px;background:var(--border);outline:0}.field-range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;background:var(--primary);cursor:pointer}.field-range::-moz-range-thumb{width:22px;height:22px;border:none;border-radius:50%;background:var(--primary);cursor:pointer}.seg{display:flex;background:#fafafa;border:1.5px solid var(--border);border-radius:10px;padding:4px;gap:4px}.seg-btn{flex:1;border:none;background:0 0;padding:9px;border-radius:7px;font-size:.875rem;color:var(--text-secondary);cursor:pointer;transition:background .2s,color .2s;-webkit-tap-highlight-color:transparent}.seg-btn.active{background:var(--primary);color:#fff;font-weight:500}.btn-primary,.btn-secondary{display:block;width:100%;border:none;border-radius:var(--radius);font-size:1rem;font-weight:500;padding:14px;margin-top:16px;cursor:pointer;transition:opacity .2s,transform .1s;-webkit-tap-highlight-color:transparent}.btn-primary{background:var(--primary);color:#fff}.btn-primary:not(:disabled):active{background:var(--primary-dark);transform:scale(.98)}.btn-primary:disabled{opacity:.45;cursor:not-allowed}.btn-secondary{background:var(--card);color:var(--primary);border:1.5px solid var(--primary);margin-top:12px}.btn-secondary:active{background:#f0faf4}.preview-section{margin-top:20px}.preview-container{background:var(--card);border-radius:var(--radius);overflow:hidden;line-height:0}.preview-image{width:100%;height:auto;display:block;-webkit-touch-callout:default;user-select:auto;-webkit-user-select:auto}#preview-canvas[hidden],.loading[hidden]{display:none!important}.loading:not([hidden]){position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;z-index:100;color:#fff;font-size:.9375rem}.spinner{width:36px;height:36px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:fixed;left:50%;bottom:calc(24px + var(--safe-bottom));transform:translateX(-50%);max-width:calc(100% - 32px);background:rgba(25,25,25,.92);color:#fff;font-size:.875rem;line-height:1.45;padding:12px 16px;border-radius:10px;text-align:center;z-index:200;pointer-events:none;animation:.25s toast-in}.toast[hidden]{display:none!important}@keyframes toast-in{from{opacity:0;transform:translateX(-50%) translateY(12px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}.save-overlay{position:fixed;inset:0;background:rgba(0,0,0,.75);display:flex;align-items:center;justify-content:center;padding:16px;z-index:150}.save-overlay-content{width:100%;max-width:400px;display:flex;flex-direction:column;gap:12px}.save-overlay-hint{color:#fff;font-size:.875rem;text-align:center;line-height:1.5}.save-overlay-img{width:100%;height:auto;border-radius:var(--radius);-webkit-touch-callout:default;user-select:auto;-webkit-user-select:auto}.save-overlay-close{margin-top:0}