:root{color:#201d18;background:#f4f1ea;font-family:Avenir Next,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;--paper: #fffdf7;--ink: #201d18;--muted: #6a6257;--line: #d8d0c3;--panel: #fbf8ef;--accent: #d64f35;--accent-dark: #9f2f1f;--teal: #007f79;--teal-dark: #005d58;--shadow: 0 20px 45px rgba(42, 33, 22, .12)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}.app-shell{min-height:100vh;padding:18px 18px 52px}.topbar{align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);display:flex;gap:20px;justify-content:space-between;margin:0 auto 16px;max-width:1440px;padding:14px 16px}.brandline{align-items:center;display:flex;gap:10px}.brandline svg{color:var(--accent)}h1,h2,p{margin:0}h1{font-size:22px;letter-spacing:0}h2{font-size:15px;letter-spacing:0}.topbar p{color:var(--muted);font-size:13px;margin-top:3px}.workbench{display:grid;gap:16px;grid-template-columns:360px minmax(0,1fr);margin:0 auto;max-width:1440px}.control-panel{align-content:start;display:grid;gap:12px}.panel-section{background:var(--paper);border:1px solid var(--line);border-radius:8px;display:grid;gap:12px;padding:14px}.section-title{align-items:center;color:var(--ink);display:flex;gap:8px}.section-title svg{color:var(--teal)}.file-input{display:none}.wide-button,.primary-button,.small-button,.bv-row button,.download-link{align-items:center;border:0;border-radius:7px;display:inline-flex;font-weight:700;gap:8px;justify-content:center;min-height:40px;padding:0 14px;text-decoration:none}.primary-button{background:var(--accent);color:#fff;min-width:138px}.primary-button:hover:not(:disabled){background:var(--accent-dark)}.wide-button,.small-button,.download-link{background:var(--teal);color:#fff;width:100%}.wide-button:hover:not(:disabled),.small-button:hover:not(:disabled),.download-link:hover{background:var(--teal-dark)}.wide-button.secondary{background:#efe5d5;color:var(--ink)}.wide-button.secondary:hover:not(:disabled),.small-button.secondary:hover:not(:disabled){background:#e4d5bf}.small-button{font-size:13px;min-height:36px;padding:0 10px}.small-button.secondary{background:#efe5d5;color:var(--ink)}.bv-row{display:grid;gap:8px;grid-template-columns:minmax(0,1fr) 46px}.bv-row button{background:var(--accent);color:#fff;min-width:46px;padding:0}label{color:var(--muted);display:grid;font-size:12px;font-weight:700;gap:6px}input,select,textarea{background:#fffaf0;border:1px solid var(--line);border-radius:7px;color:var(--ink);min-height:38px;outline:none;padding:8px 10px;width:100%}input:focus,select:focus,textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px #007f7924}textarea{resize:vertical}input[type=range]{accent-color:var(--accent);padding:0}input[type=color]{height:38px;padding:3px}.time-input{font-variant-numeric:tabular-nums}.field-grid{display:grid;gap:10px}.field-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.field-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.font-actions{display:grid;gap:8px;grid-template-columns:repeat(2,minmax(0,1fr))}.clip-actions{display:grid;gap:8px;grid-template-columns:1fr}.clip-readout{background:#efe5d5;border-radius:7px;display:grid;gap:1px;grid-template-columns:repeat(3,minmax(0,1fr));overflow:hidden}.clip-readout div{background:#fffaf08f;display:grid;gap:2px;min-width:0;padding:8px 9px}.clip-readout span{color:var(--muted);font-size:11px}.clip-readout strong{color:var(--ink);font-size:13px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.font-preview{background:#fffaf0;border:1px dashed #c8bcaa;border-radius:7px;color:var(--ink);font-size:24px;line-height:1.35;min-height:64px;overflow-wrap:anywhere;padding:12px}.switch-row{align-items:center;color:var(--ink);display:flex;font-size:14px;gap:9px}.switch-row input{accent-color:var(--accent);min-height:auto;width:auto}.metric,.range-value,.hint-box,.error-box{border-radius:7px;font-size:13px;padding:10px 12px}.metric,.range-value,.hint-box{background:#efe5d5;color:var(--muted)}.range-scale{color:var(--muted);display:flex;font-size:11px;justify-content:space-between;margin-top:-8px}.hint-box{align-items:center;display:flex;gap:8px}.hint-box svg{color:var(--teal);flex:0 0 auto}.preview-pane{display:grid;gap:12px;grid-template-rows:minmax(420px,1fr) auto;min-width:0}.video-stage{align-items:center;background:linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(0deg,rgba(255,255,255,.035) 1px,transparent 1px),#191714;background-size:24px 24px;border:1px solid #2b2620;border-radius:8px;box-shadow:var(--shadow);display:flex;justify-content:center;min-height:420px;overflow:hidden;position:relative;touch-action:none}.video-stage video{display:block;max-height:calc(100vh - 150px);max-width:100%;position:relative;-webkit-user-select:none;user-select:none;width:100%}.video-stage.empty{background:#201d18}.empty-state{align-items:center;color:#cfc4b2;display:grid;gap:10px;justify-items:center}.crop-layer{pointer-events:none;position:absolute}.shade{background:#0807068f;pointer-events:none;position:absolute}.shade.top,.shade.bottom{left:0;right:0}.shade.top{top:0}.shade.bottom{bottom:0}.shade.left{left:0}.shade.right{right:0}.crop-rect{border:2px solid #f7c948;box-shadow:inset 0 0 0 1px #0009,0 0 0 1px #0009;cursor:move;pointer-events:auto;position:absolute}.handle{background:#f7c948;border:1px solid #201d18;border-radius:999px;height:12px;pointer-events:auto;position:absolute;width:12px;z-index:3}.video-text-preview{font-weight:800;left:12px;line-height:1.15;max-height:calc(100% - 24px);overflow:hidden;overflow-wrap:anywhere;padding:7px 10px;pointer-events:none;position:absolute;right:12px;text-align:center;white-space:pre-wrap;word-break:break-word;z-index:2}.video-text-preview.top{top:12px}.video-text-preview.center{top:50%;transform:translateY(-50%)}.video-text-preview.bottom{bottom:12px}.handle.nw,.handle.ne,.handle.sw,.handle.se{cursor:nwse-resize}.handle.ne,.handle.sw{cursor:nesw-resize}.handle.n,.handle.s{cursor:ns-resize}.handle.e,.handle.w{cursor:ew-resize}.handle.nw{left:-7px;top:-7px}.handle.n{left:calc(50% - 6px);top:-7px}.handle.ne{right:-7px;top:-7px}.handle.e{right:-7px;top:calc(50% - 6px)}.handle.se{bottom:-7px;right:-7px}.handle.s{bottom:-7px;left:calc(50% - 6px)}.handle.sw{bottom:-7px;left:-7px}.handle.w{left:-7px;top:calc(50% - 6px)}.status-row{align-items:center;display:grid;gap:10px;grid-template-columns:minmax(0,1fr) minmax(220px,auto)}.error-box{background:#ffe7df;color:#9f2f1f}.error-box.compact{font-size:12px;padding:8px 10px}.download-link{justify-self:end;max-width:420px}.spin{animation:spin .9s linear infinite}.made-by{background:#201d18e0;border:1px solid rgba(255,253,247,.18);border-radius:7px;bottom:14px;box-shadow:0 12px 28px #2a21162e;color:#fffdf7;font-size:12px;font-weight:700;letter-spacing:0;line-height:1;padding:9px 11px;pointer-events:none;position:fixed;right:14px;z-index:20}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:980px){.app-shell{padding:12px 12px 54px}.topbar{align-items:stretch;flex-direction:column}.primary-button{width:100%}.workbench{grid-template-columns:1fr}.preview-pane{grid-template-rows:minmax(320px,auto) auto}.video-stage{min-height:320px}.status-row{grid-template-columns:1fr}.download-link{justify-self:stretch;max-width:none}}@media(max-width:520px){.field-grid.two,.field-grid.three,.clip-actions,.clip-readout{grid-template-columns:1fr}.made-by{bottom:10px;left:10px;right:auto}}