:root{--paper:#f8f9f5;--ink:#1c302a;--muted:#69756f;--line:#dce2d9;--accent:#df683d;--green:#234a3c;--white:#fff;--radius:22px;font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.45}a{color:inherit;text-decoration:none}button{border:0}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:5px}[hidden]{display:none!important}.wrap{max-width:1200px;margin:0 auto;padding:0 44px}.site-header{max-width:1360px;margin:auto;height:96px;padding:0 54px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:750;letter-spacing:1px}.brand-mark{font-size:32px}.brand-en{font-size:11px;letter-spacing:2px;font-weight:500;margin-left:8px}.site-header nav{display:flex;align-items:center;gap:36px;font-size:13px}.small-button{padding:12px 20px;background:transparent;border:1px solid var(--line);border-radius:8px;color:var(--ink)}.small-button span{margin-left:20px}.primary{background:var(--green);color:white;padding:20px 26px;border-radius:10px;font-weight:600;display:inline-flex;justify-content:center;align-items:center;gap:32px;transition:background .2s,transform .2s}.primary:hover:not(:disabled){background:#16382a;transform:translateY(-2px)}.hero{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding-top:75px;padding-bottom:35px}.eyebrow{font-family:"Avenir Next","Helvetica Neue",sans-serif;font-size:10px;font-weight:600;letter-spacing:2px;margin:0 0 24px;color:var(--muted)}.eyebrow>span{display:inline-block;background:var(--accent);width:6px;height:6px;border-radius:50%;margin-right:8px}.hero h1{font-size:clamp(42px,5.3vw,69px);font-weight:650;line-height:1.28;letter-spacing:-3px;margin:0 0 24px}.word-accent{position:relative}.word-accent:after{content:"";position:absolute;bottom:-4px;left:0;width:100%;height:5px;background:var(--accent);border-radius:50%}.title-dot,h2>span{color:var(--accent)}.hero-description,.section-heading>p,.smart-copy>p:not(.eyebrow),.ratio-section>div>p:not(.eyebrow){font-size:14px;color:var(--muted);line-height:1.9}.hero-description{margin-bottom:28px}.upload-main{min-width:244px;font-size:16px}.drop-hint{font-size:12px;margin:17px 0 8px;color:var(--muted)}.file-hint{font-size:10px;color:var(--muted)}.file-hint span{padding:0 6px}.free-note{display:flex;gap:18px;font-size:10px;margin-top:26px;color:var(--muted)}.hero-visual{position:relative;border:1px solid var(--line);border-radius:18px;background:white;box-shadow:0 24px 70px #203d2910;padding:12px}.demo-toolbar,.demo-foot{display:flex;justify-content:space-between;align-items:center;font-size:10px;padding:12px 5px 18px;color:var(--muted)}.demo-toolbar>span:last-child{font-size:9px;letter-spacing:1px}.demo-toolbar i{display:inline-block;width:6px;height:6px;background:#539366;border-radius:50%;margin-right:7px}.hero-stage{height:370px;border-radius:10px;overflow:hidden}.demo-foot{padding:18px 5px 7px;font-size:10px}.demo-foot b{margin:0 8px;font-weight:400;color:#a1aaa4}.floating-note{position:absolute;bottom:-17px;right:24px;background:#f1e9db;padding:12px 16px;border-radius:7px;font-size:11px;transform:rotate(-3deg)}.floating-note>span{color:var(--accent);margin-left:18px}.checker{background-color:#fff;background-image:linear-gradient(45deg,#e9ece6 25%,transparent 25%),linear-gradient(-45deg,#e9ece6 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e9ece6 75%),linear-gradient(-45deg,transparent 75%,#e9ece6 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.try-row{display:flex;align-items:center;gap:10px;margin-bottom:104px;padding-top:8px;font-size:11px;color:var(--muted)}.try-row>span:first-child{margin-right:8px}.try-row button{padding:0;width:42px;height:42px;border-radius:8px;overflow:hidden;background:#ddd}.try-row img{width:100%;height:100%;object-fit:cover}.try-arrow{margin-left:7px;font-size:10px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:28px}.section-heading h2,h2{font-size:36px;line-height:1.45;letter-spacing:-1px;font-weight:600;margin:0}.section-heading .eyebrow{margin-bottom:16px}.section-heading>p{margin:0 0 5px}.mobile-break{display:none}.large-comparison{height:510px;border-radius:16px;overflow:hidden}.before-after{position:relative;isolation:isolate;--split:50%;overflow:hidden}.ba-after,.ba-before,.ba-before img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}.ba-before{clip-path:inset(0 calc(100% - var(--split)) 0 0);background:#eee}.ba-before img{object-fit:contain}.ba-line{position:absolute;top:0;bottom:0;left:var(--split);width:2px;background:#fff;box-shadow:0 0 8px #0003;pointer-events:none;transform:translateX(-50%)}.ba-line>span{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;background:#fff;display:grid;place-items:center;box-shadow:0 3px 15px #0002;font-size:22px;color:var(--ink);letter-spacing:3px}.ba-range{position:absolute;inset:0;width:100%;height:100%;opacity:0;margin:0;cursor:ew-resize;touch-action:pan-y}.before-after:focus-within{outline:3px solid var(--accent);outline-offset:3px}.ba-label{position:absolute;top:22px;background:#ffffffdc;color:var(--ink);padding:8px 14px;border-radius:6px;font-size:11px;pointer-events:none}.before-label{left:22px}.after-label{right:22px}.comparison-hint{text-align:center;font-size:11px;color:var(--muted);margin:18px 0 0}.comparison-hint span{margin-left:12px}.smart-section{display:grid;grid-template-columns:1.1fr 1fr;gap:100px;align-items:center;margin-top:120px;margin-bottom:120px}.smart-visual{padding:25px;background:#e6ece1;border-radius:18px}.smart-visual .live-demo{height:380px;border:1px solid var(--line);border-radius:12px}.smart-copy .eyebrow{margin-bottom:18px}.feature-list{padding:0;list-style:none;margin:30px 0 0}.feature-list li{border-top:1px solid var(--line);padding:14px 0;font-size:13px;display:flex;align-items:center}.feature-list li>span{font-size:9px;margin-right:24px;color:var(--muted)}.feature-list i{margin-left:auto;font-style:normal;color:var(--muted)}.live-demo{position:relative;overflow:hidden}.live-original{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#cd0920;transition:clip-path 1s ease,opacity .5s;clip-path:inset(0 0 0 0)}.live-subject,.subject-box{position:absolute;transform-origin:center;transition:transform .8s cubic-bezier(.22,1,.36,1),opacity .4s;opacity:0}.subject-box{border:1px dashed #47886a;z-index:2;box-shadow:0 0 0 4px #fff4}.live-badge{position:absolute;bottom:16px;left:16px;background:#ffffffed;border:1px solid #fff;padding:9px 12px;border-radius:6px;font-size:10px;z-index:3}.live-demo[data-step="1"] .subject-box{opacity:1}.live-demo[data-step="2"] .live-original,.live-demo[data-step="3"] .live-original,.live-demo[data-step="4"] .live-original{clip-path:inset(0 100% 0 0);opacity:0}.live-demo[data-step="2"] .live-subject,.live-demo[data-step="3"] .live-subject,.live-demo[data-step="4"] .live-subject{opacity:1}.live-demo[data-step="3"] .live-subject{transform:translate(var(--center-x),var(--center-y))}.live-demo[data-step="4"] .live-subject{transform:translate(var(--center-x),var(--center-y)) scale(var(--fit-scale))}.center-only .live-original{display:none}.center-only .live-subject{opacity:1}.ratio-section{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:70px;padding-top:48px;padding-bottom:48px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.ratio-tabs{display:flex;gap:8px;margin-top:22px}.ratio-tabs button{background:transparent;border:1px solid var(--line);border-radius:7px;padding:11px 15px;color:var(--muted);font-size:12px;transition:background .2s}.ratio-tabs button[aria-pressed="true"]{background:var(--green);color:white;border-color:var(--green)}.ratio-stage{height:360px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:25px;background:#eef0e9;border-radius:14px}.ratio-canvas{transition:width .45s,height .45s;box-shadow:0 8px 25px #16382a13}.ratio-canvas canvas{width:100%;height:100%;object-fit:contain}.ratio-stage>span{font-size:10px;color:var(--muted)}.closing{text-align:center;padding:100px 20px}.closing h2{margin-bottom:30px}.closing .primary{font-size:14px}.closing .eyebrow{font-size:9px}footer{display:flex;justify-content:space-between;padding-top:25px!important;padding-bottom:30px!important;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.result-page{padding-top:44px;padding-bottom:60px}.result-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.result-heading h1{font-size:30px;font-weight:600;margin:0 0 8px;letter-spacing:-1px}.result-heading .eyebrow{margin-bottom:10px}.result-heading p:last-child{font-size:12px;color:var(--muted);max-width:500px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.text-button{padding:12px;background:transparent;color:var(--ink)}.editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:30px}.editor-preview{background:white;border:1px solid var(--line);border-radius:16px;padding:18px}.preview-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.mode-tabs{display:flex;gap:4px;background:#f0f2ed;padding:4px;border-radius:8px}.mode-tabs button{padding:8px 18px;background:transparent;border-radius:5px;font-size:12px;color:var(--muted)}.mode-tabs button[aria-pressed="true"]{background:white;color:var(--ink);box-shadow:0 1px 3px #0001}#dimensions{font-size:10px;color:var(--muted)}.canvas-host{height:470px;display:flex;justify-content:center;align-items:center;position:relative;background:#f4f5f1;border-radius:10px;overflow:hidden;padding:20px}#result-canvas{line-height:0;max-width:100%;max-height:100%;box-shadow:0 4px 18px #0001}#result-canvas canvas{display:block;width:100%;height:100%}#result-comparison{position:absolute;inset:20px}.processing-layer{position:absolute;inset:0;background:#f4f5f1f0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px}.processing-layer p{margin:0;font-size:12px;color:var(--muted)}.spinner{width:35px;height:35px;border:2px solid #d3dbd1;border-top-color:var(--green);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.status-track{display:flex;align-items:center;justify-content:center;gap:10px;padding-top:20px;font-size:10px;color:#78837a}.status-track i{height:1px;width:22px;background:var(--line)}.status-track [data-active="true"]{color:var(--ink);font-weight:700}.editor-controls{padding:16px 0}.controls-heading h2{font-size:20px;letter-spacing:0}.controls-heading p{font-size:12px;color:var(--muted);margin:9px 0 24px}.switch-row{display:flex;align-items:center;justify-content:space-between;padding:23px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px}.switch-row small{display:block;color:var(--muted);font-size:10px;margin-top:8px}.switch-row input{appearance:none;width:38px;height:22px;background:#bec7bd;border-radius:20px;position:relative;cursor:pointer;flex-shrink:0}.switch-row input:before{content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;border-radius:50%;background:white;transition:transform .2s}.switch-row input:checked{background:var(--green)}.switch-row input:checked:before{transform:translateX(16px)}.size-control{margin:25px 0}.size-control label{display:flex;justify-content:space-between;font-size:13px}.size-control input{width:100%;accent-color:var(--green);margin:20px 0 10px}.range-labels{display:flex;justify-content:space-between;font-size:10px;color:var(--muted)}.ratio-controls{padding:0;border:0;margin:28px 0}.ratio-controls legend{font-size:13px}.ratio-controls .ratio-tabs{margin-top:14px;gap:6px}.ratio-controls button{flex:1;padding:10px 6px}.safe-note{font-size:11px;line-height:1.8;color:var(--muted);margin:24px 0}.editor-controls .primary{width:100%;gap:10px;font-size:14px;padding:18px 10px}.download-note{text-align:center;font-size:9px;color:var(--muted);margin-top:12px}#error-message{background:#fff0e9;border:1px solid #e9c8b6;border-radius:12px;margin-top:22px;padding:22px;font-size:13px}#error-message p{line-height:1.7}#drop-overlay{position:fixed;inset:0;z-index:100;background:#173d30ed;backdrop-filter:blur(8px);color:#fff;padding:28px;pointer-events:none}#drop-overlay>div{height:100%;border:2px dashed #ffffff80;border-radius:25px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px}#drop-overlay span{font-size:75px;font-weight:200}#drop-overlay p{font-size:13px;color:#d8e4da}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:16px 24px;border-radius:10px;z-index:110;font-size:13px;max-width:90vw}.skip-link{position:fixed;top:-80px}.skip-link:focus{top:10px;left:10px;z-index:200;background:white;padding:12px}
@media(min-width:1450px){.hero{padding-top:100px;padding-bottom:55px}.hero-stage{height:410px}}
@media(max-width:900px){.wrap{padding-left:28px;padding-right:28px}.hero{gap:28px}.hero h1{font-size:48px}.hero-stage{height:320px}.hero-description{font-size:12px}.eyebrow{font-size:8px}.smart-section{gap:45px}.editor-layout{grid-template-columns:minmax(0,1fr) 250px;gap:22px}.canvas-host{height:400px}.site-header{padding:0 28px}h2{font-size:30px}}
@media(max-width:650px){.wrap{padding-left:22px;padding-right:22px}.site-header{height:76px;padding:0 22px}.brand{font-size:21px}.brand-en{display:none}.home-nav{display:none}.site-header .small-button{padding:10px 13px;font-size:11px}.hero{grid-template-columns:1fr;padding-top:45px;gap:40px}.hero h1{font-size:51px;letter-spacing:-2px}.hero-description{font-size:13px}.hero-copy .eyebrow{font-size:8px}.upload-main{width:100%;justify-content:space-between}.drop-hint,.file-hint{text-align:center}.free-note{justify-content:center;margin-top:23px}.hero-stage{height:330px}.try-row{margin-bottom:70px;padding-top:22px;flex-wrap:wrap}.try-arrow{display:none}.section-heading{display:block}.section-heading>p{font-size:12px;margin-top:18px}.section-heading h2,h2{font-size:30px}.large-comparison{height:330px}.ba-label{top:12px;font-size:10px;padding:6px 10px}.before-label{left:12px}.after-label{right:12px}.smart-section{grid-template-columns:1fr;gap:30px;margin:70px auto}.smart-visual{padding:18px;order:2}.smart-visual .live-demo{height:300px}.smart-copy{order:1}.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.feature-list li>span{margin-right:12px}.ratio-section{grid-template-columns:1fr;gap:28px;padding-top:35px;padding-bottom:35px}.ratio-stage{height:330px}.ratio-tabs button{flex:1}.closing{padding:65px 22px}.closing h2{font-size:30px}footer{gap:16px;flex-wrap:wrap}footer>span:nth-child(2){display:none}.result-page{padding-top:28px}.result-heading{gap:8px}.result-heading h1{font-size:23px}.result-heading .eyebrow{font-size:8px}.result-heading p:last-child{max-width:220px;font-size:10px}.text-button{font-size:11px;padding:8px 0}.editor-layout{grid-template-columns:1fr}.editor-preview{padding:12px}.canvas-host{height:360px;padding:12px}#result-comparison{inset:12px}.editor-controls{padding:0 4px}.controls-heading{display:none}.switch-row{padding:18px 0}.ratio-controls{margin-top:20px}.safe-note{margin:18px 0}.editor-controls .primary{position:sticky;bottom:12px;z-index:4}.status-track{font-size:9px;gap:8px}.status-track i{width:18px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.skip-link:not(:focus){width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}