:root{--paper:#faf9f6;--panel:#fff;--ink:#252722;--muted:#7b7b72;--line:#e8e7e0;--vermilion:#c9432f;--warm:#fff1e9;--night:#151916}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a,input,select,summary{ -webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,video:focus-visible{outline:3px solid #d9473260;outline-offset:4px}[hidden]{display:none!important}a{color:inherit;text-decoration:none}p,h1,h2,h3{margin:0}p{line-height:1.7}button{transition:background .15s,color .15s,border-color .15s}h1{font-size:32px;font-weight:650;letter-spacing:-1px;line-height:1.4}h2{font-size:24px;font-weight:650}h3{font-size:15px;font-weight:600}.site-header{height:88px;max-width:1200px;margin:auto;padding:0 40px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px}.brand img{object-fit:contain}.brand-name{display:block;font-size:24px;letter-spacing:2px;font-weight:700;line-height:1.4}.brand-name small{vertical-align:middle;letter-spacing:0;font-weight:500;font-size:10px;color:var(--muted);margin-left:8px}.brand-description{font-size:10px;color:var(--muted);letter-spacing:.8px}nav{display:flex;gap:30px;height:100%;align-items:center}.nav-link{font-size:13px;color:var(--muted);height:100%;display:flex;align-items:center;border-bottom:2px solid transparent}.nav-link.active{color:var(--ink);border-color:var(--vermilion)}main{max-width:1120px;margin:0 auto;padding:36px 20px}.page-intro{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:25px}.eyebrow{color:var(--vermilion);font-size:11px;letter-spacing:2px;font-weight:600;margin-bottom:8px}.muted{color:var(--muted)}.small{font-size:12px}.tiny{font-size:11px}.template-card{display:grid;grid-template-columns:42% 58%;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--panel)}.sample-stage{position:relative;height:432px;background:var(--night);display:flex;justify-content:center;overflow:hidden}.sample-stage video{height:100%;width:100%;object-fit:contain;background:var(--night)}.sample-tag{position:absolute;z-index:2;top:17px;left:19px;color:#fff;background:#0005;border:1px solid #ffffff25;border-radius:4px;padding:5px 9px;font-size:10px;pointer-events:none}.sample-play{line-height:42px;position:absolute;inset:0;width:100%;border:0;background:linear-gradient(transparent 50%,#0009);display:flex;gap:14px;justify-content:center;align-items:flex-end;padding-bottom:44px;color:#fff;font-weight:500;font-size:14px;text-align:left}.play-disc{display:flex;align-items:center;justify-content:center;background:#fff;color:var(--ink);width:42px;height:42px;border-radius:50%;font-size:16px;padding-left:2px}.template-info{padding:34px 40px;display:flex;flex-direction:column;justify-content:center}.template-category{font-size:10px;letter-spacing:1px;color:var(--vermilion);font-weight:600;display:block;margin-bottom:12px}.template-info h2{font-size:31px;letter-spacing:-.7px;margin-bottom:10px}.template-summary{color:#6c6f65;font-size:14px;line-height:1.7}.template-actions{display:flex;gap:10px}.button{border:1px solid transparent;border-radius:7px;padding:12px 20px;display:inline-flex;justify-content:center;align-items:center;gap:22px;font-size:13px;font-weight:550;min-height:43px}.primary{background:var(--vermilion);color:white}.primary:hover:not(:disabled){background:#af3827}.secondary{background:white;color:var(--ink);border-color:#dcded5}.secondary:hover{background:#f5f5ef}.spec-line{display:flex;gap:16px;font-size:11px;color:var(--muted);margin-top:18px;margin-bottom:26px}.spec-line span+span:before{content:"·";margin-right:16px}footer{max-width:1080px;margin:0 auto;padding:22px 20px 28px;font-size:10px;color:#909286;border-top:1px solid var(--line);display:flex;justify-content:center;gap:10px}.back-link{font-size:12px;color:var(--muted);display:inline-block;margin-bottom:14px}.work-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.work-heading h1{font-size:27px;margin-bottom:5px}.text-button{border:0;background:transparent;padding:6px 0;color:var(--vermilion);font-size:12px}.text-button:hover{text-decoration:underline}.mode-tabs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:22px}.mode-tab{text-align:left;border:1px solid var(--line);border-radius:9px;padding:16px 20px;background:#fff;color:var(--muted);font-size:15px;font-weight:600}.mode-tab.active{background:#fff8f3;border-color:var(--vermilion);color:var(--vermilion)}.work-section{background:white;border:1px solid var(--line);border-radius:12px;padding:26px;margin-bottom:20px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}.section-heading h2{font-size:17px;display:flex;gap:10px;align-items:center}.step{font-size:10px;width:22px;height:22px;background:#f3f3ec;display:inline-flex;align-items:center;justify-content:center;border-radius:5px;color:var(--muted)}.upload-grid,.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.field-label{display:block;font-size:12px;font-weight:550;margin-bottom:10px}.upload-zone{height:167px;position:relative;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:7px;border:1px dashed #d6d8cd;border-radius:8px;background:#fcfcf9;cursor:pointer;overflow:hidden}.upload-zone:hover,.upload-zone.dragging{border-color:var(--vermilion);background:#fff9f4}.upload-zone:focus-within{outline:3px solid #d9473260;outline-offset:2px}.upload-zone input{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}.upload-zone strong{font-size:13px;font-weight:500}.upload-zone span{font-size:11px;color:var(--muted)}.upload-zone small{font-size:10px;color:#999b90}.upload-zone .upload-icon{font-size:22px;color:#8d9781;margin-bottom:4px}.upload-zone.compact{height:38px;margin-top:8px;border-style:solid}.upload-zone.compact>*:not(input):not(strong){display:none}.upload-zone.compact strong{font-size:11px}.asset-detail{display:flex;gap:12px;align-items:center;margin-top:10px;padding:9px;background:#f6f7f1;border-radius:7px;min-height:77px}.asset-detail img,.asset-detail video{width:68px;height:62px;object-fit:contain;border-radius:3px;background:#ededdf}.asset-detail .asset-name{font-size:12px;word-break:break-all}.field-status{font-size:11px;color:var(--muted);padding-top:6px}.error{color:#bb3929!important}.info-grid{margin-top:22px}.text-input{width:100%;border:1px solid #dfe1d7;border-radius:6px;padding:12px;color:var(--ink);background:white;font-size:13px}.text-input::placeholder{color:#aaa99f}.generate-bar{display:flex;align-items:center;justify-content:space-between;padding:22px 0;gap:15px}.count-row{display:flex;align-items:center;gap:12px;font-size:12px}.count-row select{border:1px solid #dfe1d7;background:#fff;padding:7px 25px 7px 10px;border-radius:5px;color:var(--ink)}#generateHint{margin-top:8px;font-size:11px}.preset-details{border-bottom:1px solid var(--line);padding-bottom:18px}.preset-details summary{font-size:12px;cursor:pointer}.preset-grid{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.preset-button{background:#f8f8f3;border:1px solid var(--line);padding:8px 12px;border-radius:5px;font-size:11px}.preset-button.active{border-color:var(--vermilion);color:var(--vermilion)}.setting-heading{display:flex;align-items:center;justify-content:space-between;margin:24px 0 13px;gap:15px}.music-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.music-card{border:1px solid var(--line);border-radius:8px;padding:12px;display:flex;flex-direction:column;gap:9px;background:#fff}.music-card.active{border-color:var(--vermilion);background:#fff9f4}.music-choice{border:0;text-align:left;background:transparent;padding:0;line-height:1.6;color:var(--ink)}.music-choice strong{display:block;font-size:13px;font-weight:500}.music-choice small{display:block;color:var(--muted);font-size:10px}.listen-button{align-self:flex-start;font-size:10px;background:white;border:1px solid #e2e3d9;border-radius:20px;padding:5px 9px;color:#777c6c}.inline-actions{display:flex;gap:18px}.fx-groups{display:flex;flex-direction:column;gap:15px;margin-top:18px}.fx-group{display:flex;gap:20px;align-items:flex-start}.fx-group h4{font-size:11px;color:var(--muted);min-width:50px;font-weight:400;margin:10px 0}.fx-options{display:flex;gap:8px;flex-wrap:wrap}.fx-option{border:1px solid var(--line);border-radius:6px;display:flex;align-items:center;background:white}.fx-option.active{border-color:#dc8d7e;background:#fff5ef;color:var(--vermilion)}.fx-choice{font-size:11px;color:inherit;background:transparent;border:0;padding:9px 4px 9px 10px}.fx-info{font-size:12px;color:#999a90;background:transparent;border:0;padding:8px}.fx-choice[aria-pressed=true]:before{content:"✓ ";color:var(--vermilion)}.fx-popup{position:fixed;z-index:100;width:270px;padding:16px;background:#fff;border:1px solid #e1e3d9;border-radius:12px;box-shadow:0 8px 30px #15191620}.popup-heading{display:flex;justify-content:space-between;align-items:center}.popup-heading .eyebrow{font-size:9px;margin:0}.icon-button{border:0;background:none;font-size:22px;color:var(--muted);line-height:1;padding:2px 5px}.fx-popup h3{font-size:15px;margin-top:7px}.fx-popup>p{font-size:11px;margin-top:8px}.fx-video-wrap{position:relative;background:var(--night);height:210px;border-radius:7px;margin-top:12px;overflow:hidden}.fx-video-wrap video{width:100%;height:100%;object-fit:contain}.fx-play{position:absolute;inset:0;width:100%;border:0;background:#151916b0;color:white;font-size:12px}.progress-box{border:1px solid var(--line);padding:23px;background:white;border-radius:9px;margin:4px 0 22px}.progress-box>div:first-child{display:flex;justify-content:space-between;font-size:12px}.progress-track{height:4px;background:#efefe6;border-radius:3px;margin-top:15px;overflow:hidden}.progress-track>div{background:var(--vermilion);height:100%;width:0;transition:width .4s}.result-layout{display:grid;grid-template-columns:45% 55%}.result-player{height:480px;background:var(--night);border-radius:8px;overflow:hidden;display:flex;justify-content:center}.result-player video{width:100%;height:100%;object-fit:contain}.result-info{padding:25px 35px;display:flex;align-items:flex-start;flex-direction:column;gap:15px}.result-info h3{font-size:21px;line-height:1.5}.result-info .button{width:100%}.result-versions{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}.version-button{border:1px solid var(--line);background:white;border-radius:5px;padding:8px 10px;font-size:11px}.version-button.active{border-color:var(--vermilion);color:var(--vermilion);background:#fff9f4}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:200;background:#282c24;color:#fff;padding:13px 22px;border-radius:8px;max-width:min(500px,90vw);line-height:1.5;font-size:12px;box-shadow:0 4px 14px #0001}audio{display:none}@media(min-width:1500px){main{padding-top:55px}.sample-stage{height:490px}.template-info{padding:40px 50px}}@media(max-width:760px){.site-header{height:75px;padding:0 20px}.brand-name{font-size:21px}.brand-description{font-size:9px}nav{gap:16px}.nav-link{font-size:11px}main{padding:28px 18px}.page-intro{margin-bottom:20px}h1{font-size:25px}.template-card{grid-template-columns:1fr}.sample-stage{height:360px}.template-info{padding:27px 24px}.template-info h2{font-size:27px}.template-actions .primary{flex:1}.spec-line{gap:10px;margin-bottom:22px}.spec-line span+span:before{margin-right:10px}.work-heading{align-items:flex-start;gap:15px}.work-heading h1{font-size:23px}.work-heading>.text-button{font-size:10px;white-space:nowrap}.mode-tab{padding:15px 12px;font-size:13px}.work-section{padding:20px 16px}.section-heading{align-items:flex-start}.section-heading h2{font-size:15px}.section-heading>.tiny{font-size:9px}.upload-grid{gap:14px}.upload-zone{height:154px;padding:10px;text-align:center}.upload-zone span{font-size:10px}.info-grid{gap:14px}.field-label{font-size:11px}.text-input{font-size:12px}.generate-bar{align-items:stretch;flex-direction:column;padding:17px 0}.count-row{gap:9px}.music-grid{grid-template-columns:repeat(2,1fr)}.setting-heading{flex-wrap:wrap;gap:6px}.fx-group{flex-direction:column;gap:0}.fx-group h4{margin:0 0 8px}.result-layout{grid-template-columns:1fr}.result-player{height:440px}.result-info{padding:24px 5px 0}.result-info .button{max-width:none}.result-versions{margin:0}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.context-note{font-size:12px;color:var(--muted);margin:-10px 0 18px}
.field-error{font-size:11px;color:#bb3929;margin-top:7px}
.text-input[aria-invalid="true"],.upload-zone:has(input[aria-invalid="true"]){border-color:#bb3929}
.field-status:empty,#generateHint:empty,#resultStatus:empty{display:none}
.effect-ratio{max-width:480px;margin-top:24px;padding-top:18px;border-top:1px solid var(--line)}.ratio-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:12px}.ratio-heading label{font-weight:550}.ratio-heading label span{margin-left:8px;font-weight:400}.ratio-heading output{font-size:15px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--vermilion)}.effect-ratio input{width:100%;height:32px;margin:6px 0 0;accent-color:var(--vermilion);cursor:pointer}.effect-ratio input:disabled{cursor:not-allowed;opacity:.45}.ratio-labels{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:10px}

.project-toolbar{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:28px 0}.project-search{width:min(420px,70%)}.project-list{border-top:1px solid var(--line)}.project-row{display:flex;align-items:center;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}.project-open{flex:1;min-width:0;text-decoration:none;color:inherit}.project-open strong{display:block;font-size:20px;overflow-wrap:anywhere}.project-meta{display:block;font-size:13px;color:var(--muted);margin-top:8px}.project-actions{display:flex;gap:16px;align-items:center}.project-state{font-size:13px;color:var(--muted)}.account-dialog{border:1px solid var(--line);border-radius:12px;background:var(--paper,#fffaf5);color:var(--ink);padding:32px;width:min(440px,calc(100vw - 32px));box-shadow:0 24px 80px #24181026}.account-dialog::backdrop{background:#24181070}.account-dialog h2{margin:0 0 16px}.account-dialog .field-label{display:block;margin:24px 0 10px}.account-dialog .code-row{display:flex;gap:12px}.account-dialog .code-row input{min-width:0;flex:1}.account-dialog .code-row button{white-space:nowrap;padding:12px}.account-dialog #loginSubmit{width:100%;margin-top:12px}.dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:20px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}#creatorTitle{overflow-wrap:anywhere}#moreProjects{margin-top:24px}#saveStatus.error{color:var(--vermilion)}#navProjects.active,#trashButton[aria-pressed=true]{color:var(--vermilion)}
@media(max-width:640px){.site-header{flex-wrap:wrap;gap:20px}.site-header nav{width:100%;justify-content:space-between;gap:12px}.project-row{flex-wrap:wrap;gap:12px}.project-open{flex-basis:70%}.project-actions{width:100%;justify-content:flex-end}.account-dialog{padding:24px}.project-row .project-open strong{font-size:18px}}

@media(max-width:640px){.site-header{height:auto;min-height:88px;padding-top:20px;padding-bottom:16px}.site-header nav{flex-wrap:wrap}}
.storage-summary{max-width:460px;margin:24px 0 8px}.storage-summary>div{display:flex;justify-content:space-between;gap:20px;font-size:13px;color:var(--muted)}.storage-summary meter{width:100%;height:8px;margin:10px 0;appearance:none;border:0;border-radius:4px;background:var(--line)}.storage-summary meter::-webkit-meter-bar{border:0;background:var(--line);height:6px}.storage-summary meter::-webkit-meter-optimum-value{background:var(--vermilion)}.upload-actions{margin:8px 0}.upload-zone:has(input:disabled){cursor:default;opacity:.6}