:root{color-scheme:dark;--paper:#000;--ink:#f4f4f0;--muted:#aaa;--scale:1;font-family:"Noto Serif SC","Songti SC","SimSun","Times New Roman",serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink)}button,input,select{font:inherit}button,a,label.upload-button{touch-action:manipulation}a{color:inherit;text-decoration:none}button{color:inherit;background:none;border:0;cursor:pointer;padding:0}button:hover,a:hover{color:#fff}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:1px solid white;outline-offset:6px}button:disabled{opacity:.4;cursor:wait}[hidden]{display:none!important}.original-asset{filter:invert(1)}.brand{position:fixed;left:20px;top:20px;z-index:10;width:80px;height:80px}.brand img{display:block}.sidebar{position:fixed;left:20px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:10px;z-index:15;font-size:20px;line-height:24px}.sidebar a{display:flex;align-items:center;gap:20px;color:#aaa;white-space:nowrap}.sidebar a.active{color:var(--ink);text-decoration:underline;text-underline-offset:5px}.sidebar .account-nav{margin-top:20px}.language{position:fixed;right:20px;top:20px;font-size:20px;z-index:20;background:#000b}.language button{color:#aaa}.language button.selected{color:#fff;text-decoration:underline;text-underline-offset:5px}.page{position:relative;min-height:100svh;overflow:hidden}.hero{text-align:center;padding-top:clamp(160px,24vh,245px)}.hero h1{font-size:clamp(66px,8vw,128px);font-weight:400;margin:0;line-height:1.2;letter-spacing:.03em}.hero h2{font-size:clamp(32px,4vw,64px);font-weight:400;margin:8px 0 0}.hero-equation{display:flex;justify-content:center;align-items:center;gap:50px;margin-top:68px;font-size:24px}.equation-arrow{font-family:"Times New Roman",serif;letter-spacing:4px}.hero-cta{display:inline-block;margin-top:64px;font-size:24px;border-bottom:1px solid transparent;padding-bottom:8px}.hero-cta:hover{border-color:#fff}.hero-caption{font-size:13px;color:#777;margin-top:84px;letter-spacing:.2em}.intro-page{padding-top:31vh;min-height:max(900px,100svh)}.intro-page header{text-align:center}.intro-page header h1{font:400 48px/1.2 "Times New Roman",serif;margin:0}.intro-page header p{font:32px/1.2 "Times New Roman",serif;margin:100px 0 60px}.feature-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;margin:0 14px}.feature{text-align:left;display:flex;flex-direction:column;background:#282828;min-height:300px;padding:0 16px 10px;overflow:hidden}.feature h2{font-size:32px;font-weight:400;margin:0 -10px 8px;white-space:nowrap}.feature p{font-size:22px;line-height:1.3;margin:0;min-height:105px}.feature img{align-self:center;object-fit:contain;max-width:100%;margin-top:12px}.feature.upcoming{color:#aaa}.sound-arcs{position:fixed;left:50%;top:0;width:800px;height:max(900px,100svh);transform-origin:top left;transform:scale(var(--scale));pointer-events:none;z-index:0}.arc{position:absolute}.arc-a{left:-30px;top:0}.arc-b{left:31px;top:0}.arc-c{left:-32px;bottom:0}.arc-label{position:absolute;font-size:32px;color:#aaa}.label-a{left:111px;top:0}.label-b{right:2px;top:374px}.label-c{left:41px;bottom:0}.studio-page{min-height:max(960px,100svh)}.work-area{position:relative;margin-left:11.5vw;padding-top:70px;width:min(580px,37vw);z-index:2;padding-bottom:40px}.work-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.work-area h1,.work-area h2,.work-area h3{font-weight:400;margin:0}.work-area h1,.work-area h2{font-size:30px}.work-area h3{font-size:24px;color:#aaa}.engine-status{font-family:system-ui,sans-serif;font-size:11px;color:#999;line-height:1.4;max-width:140px;text-align:right}.engine-status.ready{color:#deded8}.engine-status:before{content:'●';font-size:8px;margin-right:6px}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.track-title{display:flex;align-items:baseline;justify-content:space-between;color:#aaa}.track-title span{font-size:20px}.input-track .upload-button{display:inline-block;margin-top:10px;padding:7px 14px;font-size:28px;background:#777;cursor:pointer;color:white}.file-input{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.file-name{font-family:system-ui,sans-serif;font-size:10px;line-height:1.3;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;color:#999;margin:6px 0 4px;height:14px}.input-track canvas{display:block;width:100%;height:60px;background:#111}.input-track audio{display:block;width:100%;height:26px;margin:5px 0 10px;opacity:.8}.time-grid{display:flex;gap:16px;margin-top:7px}.time-grid label{display:flex;flex:1;flex-direction:column;gap:4px;font-size:20px;min-width:0}.time-grid input{min-width:0;width:100%;border:0;border-bottom:1px solid #555;background:#151515;color:#eee;padding:4px;font-size:21px;font-family:"Times New Roman",serif}.input-track input[type=range]{width:100%;margin:12px 0 4px;accent-color:#eee;height:12px}.selection-foot{display:flex;justify-content:space-between;align-items:center}.selection-foot span{font:11px system-ui,sans-serif;color:#999}.selection-foot button{background:#777;font-size:22px;padding:5px 10px}.primary-actions{display:flex;justify-content:center;align-items:center;gap:25px;margin:26px 0 10px;font-size:28px;white-space:nowrap}.primary-actions button{border-bottom:1px solid transparent;padding-bottom:3px}.primary-actions button:hover,.primary-actions button[aria-expanded=true]{border-color:#fff}.primary-actions>span{color:#aaa;font-size:23px}.consent{display:flex;align-items:center;gap:8px;font-family:system-ui,sans-serif;font-size:11px;justify-content:center;color:#aaa;min-height:28px}.consent input{accent-color:white}.job-status{font:12px/1.5 system-ui,sans-serif;min-height:28px;margin:4px 0 12px;color:#bbb;overflow-wrap:anywhere}.job-status.busy{border-left:2px solid #eee;padding-left:10px;animation:pulse 1.5s infinite alternate}.job-status.error{color:#ffbcb4}.output-heading{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}.output-heading>span{font-size:12px;color:#999}.output-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.output-grid h3 small{font-size:17px;margin-left:8px}.download{display:inline-block;background:#777;font-size:27px;padding:6px 14px;margin:12px 0 14px}.download.disabled{opacity:.35;pointer-events:none}.work-area>audio{width:100%;height:33px;display:block;margin:7px 0 13px;opacity:.85}.compare-row{display:flex;align-items:center;gap:15px;color:#aaa;font-size:14px}.compare-row button{border:1px solid #555;width:35px;padding:3px}.compare-row button.active{background:#ddd;color:#000}.settings{margin-top:22px;color:#999;font:12px system-ui,sans-serif}.settings summary{cursor:pointer}.settings label{display:flex;align-items:center;gap:8px;margin-top:12px}.settings input[type=range]{accent-color:#ddd;max-width:170px}.sound-spines{position:fixed;left:50%;top:0;height:100vh;width:260px;pointer-events:none}.sound-spines img{position:absolute;left:0;top:50%;transform:translate(-50%,-50%) rotate(90deg)}.sound-spines img:nth-child(2){left:65px}.sound-spines img:nth-child(3){left:130px}.sound-spines img:nth-child(4){left:195px}.object-panel{position:absolute;left:68.2%;right:4%;top:80px;z-index:2}.object-panel h2{font-weight:400;font-size:30px;margin:0 0 6px}.object-panel h3{font-size:21px;font-weight:400;margin:20px 0 10px}.small-note{font:11px/1.5 system-ui,sans-serif;color:#999}.analyze-button{border-bottom:1px solid #999;padding:8px 0;font-size:22px;margin-top:10px}.candidate-row{display:grid;grid-template-columns:30px 1fr;align-items:center;gap:8px;margin:10px 0}.candidate-row .candidate-number{padding:5px;background:#444;text-align:center;font-size:17px}.candidate-row audio{width:100%;height:30px;opacity:.85}.candidate-placeholder{height:30px;border-block:1px solid #444;color:#777;font:11px system-ui,sans-serif;display:flex;align-items:center}.mapping{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.mapping h3{flex-basis:100%}.mapping select{background:#333;color:#fff;border:1px solid #555;padding:6px;font-size:19px}.mapping label{display:flex;align-items:center;gap:10px}#short-preview{margin-top:20px;border-bottom:1px solid white;font-size:22px;padding-bottom:5px}.plans{margin:16vh auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:6vw;width:70%;max-width:1100px;text-align:center}.plans article{display:flex;flex-direction:column;min-height:530px}.plans h1{font-size:32px;font-weight:400;border-bottom:1px solid #999;margin:0 0 50px;padding-bottom:5px}.plans article>div{font-size:23px;line-height:1.25;min-height:190px}.plans p{margin:4px 0}.plans .plan-price{font-size:28px;margin:30px 0 24px;white-space:nowrap}.plans article>a,.plans article>button{border-top:1px solid #999;font-size:27px;margin-top:auto;padding-top:8px}.account-page{display:grid;place-items:start center;padding-top:13vh;min-height:900px}.account-backdrop{position:absolute;left:50%;top:0;transform:translateX(-50%);opacity:.2;z-index:0}.auth-box{position:relative;display:flex;margin-top:0;z-index:2;min-height:600px}.auth-tabs{display:flex;flex-direction:column;background:transparent;width:100px;flex-shrink:0;align-items:stretch;font-size:30px}.auth-tabs a{display:grid;place-items:center;flex:1;min-height:0;width:100%;background:#aaa;transition:background-color .15s,color .15s}.auth-tabs a:first-child{border-radius:0 0 0 30px}.auth-tabs a:last-child{border-radius:30px 0 0 0}.auth-tabs a:hover{background:#888}.auth-tabs a.active{background:#494949;color:#fff;text-decoration:underline;text-underline-offset:8px}.auth-box form{display:flex;flex-direction:column;justify-content:center;background:#fff;color:#111;width:400px;padding:40px 48px;min-height:600px}.auth-box h1{font-size:24px;font-weight:400;margin:0 0 10px}.auth-box label{display:flex;flex-direction:column;font-size:27px;margin-bottom:10px}.auth-box input{color-scheme:light;min-width:0;width:100%;height:46px;border:1px solid #555;background:#fff;color:#111;border-radius:10px;padding:6px 10px;font-size:20px}.auth-box button{font-size:29px;color:#111;text-decoration:underline;text-underline-offset:5px;align-self:center;margin:16px 0}.auth-box a{color:#111;align-self:center;font-size:23px}.auth-box .auth-tabs a{color:#eee}.auth-note{font:11px/1.5 system-ui,sans-serif;color:#777}.auth-box #account-message{font:12px/1.5 system-ui,sans-serif;overflow-wrap:anywhere;color:#333;max-width:100%;white-space:pre-line}.profile-page{padding:90px 8vw 50px 31vw}.profile-page dl{display:grid;grid-template-columns:145px 1fr;font-size:28px;gap:55px 20px}.profile-page dt{text-align:right;color:#aaa}.profile-page dd{margin:0;border-left:1px solid #777;padding-left:20px;line-height:1.5;overflow-wrap:anywhere}.profile-page #logout{font-size:20px;border-bottom:1px solid #aaa;margin-top:40px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);max-width:90vw;padding:15px 22px;border:1px solid #555;background:#1b1b1b;color:#fff;z-index:100;font:14px/1.5 system-ui,sans-serif;text-align:center}@keyframes pulse{to{opacity:.55}}@media(min-width:1700px){.work-area{width:37vw;max-width:710px}.input-track canvas{height:75px}.input-track audio{height:30px}.work-area h2{font-size:32px}}@media(max-width:1100px){.sidebar{font-size:16px;gap:12px;left:15px}.sidebar a{gap:12px}.brand{left:15px;top:15px;transform:scale(.8);transform-origin:top left}.language{font-size:16px}.work-area{margin-left:150px;width:45vw}.sound-arcs{left:63%;opacity:.55}.object-panel{left:67%;right:2%;top:100px}.sound-spines{left:62%;opacity:.35}.sound-spines img:nth-child(n+3){display:none}.primary-actions{font-size:22px;gap:17px}.track-title h2{font-size:24px}.track-title span{font-size:16px}.input-grid{gap:18px}.feature h2{font-size:24px}.feature p{font-size:18px}.feature-grid{gap:10px}.intro-page header h1{font-size:38px}.intro-page header p{font-size:27px}.plans{margin-left:180px;width:calc(100% - 220px);gap:4vw}.plans .plan-price{font-size:22px;white-space:normal}.plans article>div{font-size:20px}}@media(max-width:760px){.brand{position:absolute;transform:scale(.6)}.language{position:absolute;font-size:14px}.sidebar{top:auto;bottom:0;left:0;right:0;transform:none;background:#000f;flex-direction:row;justify-content:space-around;padding:14px 5px;border-top:1px solid #333;gap:4px;font-size:13px}.sidebar a{gap:5px;flex-direction:column;font-family:system-ui,sans-serif}.sidebar a img{transform:scale(.45);margin:-5px}.sidebar .account-nav{margin:0}.page{padding-bottom:100px}.hero{padding-top:26vh;min-height:100svh}.hero h1{font-size:60px}.hero h2{font-size:30px}.hero-equation{font-size:16px;gap:18px;margin-top:48px}.hero-cta{font-size:22px;margin-top:50px}.hero-caption{margin-top:65px}.intro-page{padding-top:145px}.intro-page header{padding:0 20px}.intro-page header h1{font-size:33px}.intro-page header p{font-size:22px;margin:45px 0}.feature-grid{grid-template-columns:1fr;gap:16px;margin:0 24px}.feature{min-height:270px;padding:18px;display:grid;grid-template-columns:1fr 1fr}.feature h2{grid-column:1/-1;margin:0 0 10px}.feature p{font-size:18px;min-height:0}.feature img{margin:0;align-self:center;max-height:150px}.work-area{margin:0 22px;padding-top:100px;width:auto}.sound-arcs,.sound-spines{display:none}.studio-page{overflow:visible}.object-panel{position:relative;left:auto;right:auto;top:auto;margin:0 22px 30px;padding-top:20px;border-top:1px solid #555}.input-grid{gap:18px}.time-grid{gap:7px}.time-grid input{font-size:19px}.input-track .upload-button{font-size:22px}.input-track h3{font-size:19px}.primary-actions{font-size:23px}.output-grid h3{font-size:23px}.output-grid h3 small{font-size:14px;display:block;margin:0}.plans{margin:125px 28px 0;width:auto;grid-template-columns:1fr;gap:40px}.plans article{min-height:360px}.plans h1{margin-bottom:25px}.plans article>div{min-height:90px}.account-page{padding-top:125px;min-height:100svh}.account-backdrop{transform:translateX(-50%) scale(.6);transform-origin:top center}.auth-box{margin:0 15px;width:calc(100% - 30px);min-height:520px}.auth-tabs{width:70px;font-size:22px}.auth-box form{width:calc(100% - 70px);padding:25px;min-height:520px}.auth-box label{font-size:22px}.auth-box input{font-size:16px}.profile-page{padding:130px 25px 120px}.profile-page dl{font-size:20px;grid-template-columns:100px 1fr;gap:35px 10px}.profile-page dd{padding-left:12px}}

.deployment-note{position:fixed;left:140px;right:240px;top:22px;z-index:30;text-align:center;color:#aaa;font:11px/1.5 system-ui,sans-serif;pointer-events:none}@media(max-width:760px){.deployment-note{top:75px;left:20px;right:20px;font-size:10px}}

.feature-visual{display:grid;place-items:center;width:100%;height:150px;min-width:0;overflow:hidden}.feature-visual img{max-width:none;max-height:none;margin:0;transform:scale(var(--asset-scale,1));transform-origin:center}.work-area{margin-left:max(175px,11.5vw)}.sound-arcs,.sound-spines{left:max(50%,calc(175px + 37vw + 30px))}@media(min-width:1101px) and (max-width:1350px){.sound-spines img:nth-child(n+3){display:none}}@media(max-width:1100px){.work-area{margin-left:150px}.sound-arcs{left:63%}.sound-spines{left:62%}}@media(max-width:760px){.work-area{margin-left:22px}.feature-visual{height:150px}}

.sidebar a{max-width:150px}.sidebar a span{white-space:normal;overflow-wrap:anywhere}.sidebar a img{flex-shrink:0}.auth-box input:focus-visible,.auth-box button:focus-visible,.auth-box form a:focus-visible{outline-color:#111}@media(max-width:760px){.sidebar a{flex:1;min-width:0;max-width:100px}}
/* Scroll-driven curved album helix between the first and second screens. */
#landing-journey{height:320svh;position:relative}.landing-pin{position:sticky;top:0;height:100svh;overflow:hidden;background:#000}#landing-journey .hero{height:100svh;min-height:100svh;will-change:opacity}#album-vortex{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:0}.journey-intro{margin-top:-100svh;position:relative;z-index:1;opacity:0}.journey-hint{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:10px;color:#aaa;font:11px/1.5 system-ui,sans-serif;letter-spacing:.12em;z-index:2}.journey-hint b{font-size:22px;font-weight:400}.journey-skip{position:fixed;right:24px;bottom:26px;z-index:22;font:12px/1.5 system-ui,sans-serif;border-bottom:1px solid #666;padding-bottom:4px;color:#aaa}.in-journey .brand,.in-journey .sidebar,.in-journey .language{z-index:20}@media(max-width:760px){#landing-journey{height:280svh}.journey-hint{bottom:110px;font-size:10px}.journey-skip{bottom:105px;right:20px}.journey-intro{padding-bottom:110px}}@media(prefers-reduced-motion:reduce){#landing-journey{height:130svh}#album-vortex{display:none}.journey-hint b{display:none}}
/* Interactive input selections and generated output waveforms. */
.engine-audio{display:none!important}.wave-toolbar{display:flex;align-items:center;gap:7px;min-height:26px;color:#aaa;font:11px system-ui,sans-serif}.wave-toolbar button{min-width:24px;height:24px;font-size:14px;line-height:1}.wave-toolbar output{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font:10px ui-monospace,monospace;font-variant-numeric:tabular-nums}.wave-toolbar input[type=range]{width:52px;max-width:52px;margin:0;accent-color:#ddd;height:12px}.input-track canvas,.output-track canvas{display:block;width:100%;height:64px;background:#101010;touch-action:none;cursor:crosshair}.input-track canvas.locked,.output-track canvas{cursor:pointer}.time-grid{flex-direction:column;gap:6px}.time-grid label{display:grid;grid-template-columns:40px minmax(0,1fr);align-items:center;gap:8px;font-size:18px}.time-grid input{font:17px ui-monospace,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em;padding:5px 7px}.time-grid input[aria-invalid=true]{border-color:#ffbcb4}.time-grid input:disabled{color:#999;background:#0b0b0b}.time-format,.wave-note{font:10px/1.5 system-ui,sans-serif;color:#999;margin:6px 0}.range-controls{display:grid;grid-template-columns:1fr 1fr;gap:10px}.range-controls input[type=range]{margin:4px 0 6px}.selection-foot{gap:8px;flex-wrap:wrap;min-height:34px}.selection-foot button{font-size:18px;padding:5px 9px}.selection-foot button[id^=edit-]{font:12px system-ui,sans-serif;background:none;border-bottom:1px solid #777;padding:3px}.selection-foot button[id^=confirm-]{margin-left:auto}.upload-button:has(+input:disabled){opacity:.45;cursor:default}.output-grid .track-title{gap:8px}.output-grid .track-title h3{font-size:30px}.output-grid .track-title>span{font-size:20px;white-space:nowrap;text-align:right}.output-track{margin:5px 0 15px}.output-track .wave-toolbar{margin-bottom:3px}.output-track .wave-note{margin-top:5px}@media(max-width:760px){.output-grid .track-title h3{font-size:24px}.output-grid .track-title>span{font-size:16px}.time-grid label{grid-template-columns:34px minmax(0,1fr);font-size:16px;gap:4px}.time-grid input{font-size:15px;padding:5px 3px}}@media(max-width:500px){.input-track .wave-toolbar input[data-volume],.input-track .wave-toolbar>span{display:none}.wave-toolbar output{font-size:9px}.output-grid .track-title{align-items:baseline;gap:4px}.output-grid .track-title h3{font-size:22px}.output-grid .track-title>span{font-size:13px}}

.journey-static #landing-journey{height:130svh}

/* Match the account storyboard: keep the background motif visible before the card. */
.account-page .account-backdrop{opacity:1}