:root{--ink:#17211f;--muted:#6b7773;--line:#dce5df;--paper:#f7faf7;--mint:#dff4e9;--green:#1d7658;--dark:#16201d;--orange:#f08752}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer;border:0}.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,5vw,72px);border-bottom:1px solid var(--line);background:rgba(247,250,247,.92);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.03em;font-size:19px}.brand img,.footer-brand img{display:block}.nav{display:flex;align-items:center;gap:clamp(14px,2.6vw,34px);font-size:13px;color:#53625c}.nav a:hover{color:var(--green)}.nav-button{padding:10px 15px;border:1px solid #b7d4c4;border-radius:6px;color:var(--green)!important;font-weight:700}.hero{max-width:1180px;margin:0 auto;padding:clamp(72px,11vw,140px) clamp(20px,5vw,48px) 76px;display:grid;grid-template-columns:1fr 330px;gap:60px;align-items:center}.kicker,.section-label{font-size:11px;letter-spacing:.16em;font-weight:800;color:var(--green);margin:0 0 20px}.pulse{width:7px;height:7px;border-radius:50%;display:inline-block;background:var(--orange);margin-right:7px;vertical-align:1px}h1{font-size:clamp(52px,8vw,100px);line-height:.96;letter-spacing:-.075em;margin:0;max-width:780px}h1 em{color:var(--green);font-style:normal}.hero-text{max-width:550px;color:var(--muted);font-size:17px;line-height:1.7;margin:28px 0}.trust-row{display:flex;flex-wrap:wrap;gap:18px;color:#586860;font-size:12px;font-weight:650}.hero-mark{width:260px;height:260px;border-radius:50%;background:var(--mint);position:relative;display:grid;place-items:center;color:var(--green);font-size:44px;font-weight:850;letter-spacing:-.1em;overflow:hidden;justify-self:end}.mark-ring{position:absolute;width:186px;height:186px;border:1px solid #a4cfb7;border-radius:50%}.mark-slice{position:absolute;width:340px;height:42px;background:var(--orange);transform:rotate(-45deg);opacity:.92}.hero-mark span{position:relative;z-index:1;background:var(--mint);padding:11px 7px 11px 2px}.dropzone{max-width:1180px;margin:0 auto 90px;border:1px solid #b8d7c4;border-radius:8px;background:#edf8f1;min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;overflow:hidden}.dropzone:before,.dropzone:after{content:"";position:absolute;width:180px;height:180px;border:1px solid #c7e3d1;border-radius:50%}.dropzone:before{left:-80px;top:-90px}.dropzone:after{right:-80px;bottom:-100px}.dropzone-inner{text-align:center;position:relative;z-index:1}.upload-icon{margin:0 auto 14px;width:45px;height:45px;border:1px solid #9bc9ad;border-radius:50%;display:grid;place-items:center;color:var(--green)}.upload-icon svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.dropzone h2{font-size:21px;letter-spacing:-.03em;margin:0 0 7px}.dropzone p{color:var(--muted);font-size:13px;margin:0}.choose-button{margin-top:20px;background:var(--dark);color:#fff;border-radius:5px;padding:11px 16px;font-size:13px;font-weight:750}.choose-button span{color:#a8beb4;margin-left:10px;font-size:11px}.dropzone input{display:none}.dropzone-note{position:absolute;bottom:14px;color:#789184;font-size:11px}.status{min-height:24px;text-align:center;color:#a35c23;font-size:13px;margin:-52px auto 40px}.preview-shell,.batch-shell{max-width:1180px;margin:0 auto 96px;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}.preview-header{padding:23px 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.preview-header h2,.how h2{margin:0;font-size:27px;letter-spacing:-.05em}.preview-header .section-label{margin-bottom:8px}.preview-meta{display:flex;gap:18px;color:var(--muted);font:11px ui-monospace,SFMono-Regular,Menlo,monospace}.comparison-stage{min-height:450px;background:#f2f5f2;display:grid;place-items:center;padding:28px}.comparison-container{position:relative;max-width:100%;width:max-content;line-height:0}.comparison-container>img{display:block;max-width:100%;max-height:65vh;object-fit:contain}.comparison-container #processedOverlay{position:absolute;inset:0 auto 0 0;width:50%;overflow:hidden;border-right:2px solid #fff;z-index:2}.comparison-container #processedImage{height:100%;max-width:none;object-fit:contain}.comparison-container #sliderHandle{position:absolute;top:0;bottom:0;left:50%;width:38px;margin-left:-19px;z-index:5;display:grid;place-items:center;cursor:col-resize}.comparison-container #sliderHandle span{background:#fff;border:1px solid var(--line);border-radius:50%;width:30px;height:30px;display:grid;place-items:center;color:var(--green);font-size:13px;box-shadow:0 3px 12px #0002}.tag{position:absolute;top:14px;z-index:6;background:#fff;border:1px solid var(--line);padding:5px 8px;font:700 10px ui-monospace,SFMono-Regular,Menlo,monospace;color:#506059}.tag-after{left:14px}.tag-before{right:14px}.preview-actions{display:flex;gap:9px;padding:20px 28px;border-top:1px solid var(--line)}.action-primary,.action-dark,.action-quiet{border-radius:5px;padding:10px 15px;font-size:13px;font-weight:700}.action-primary{background:var(--green);color:#fff}.action-dark{background:var(--dark);color:#fff}.action-quiet{background:#fff;color:#61706a;border:1px solid var(--line)}.batch-shell{padding-bottom:18px}.batch-shell .preview-header{margin-bottom:0}.batch-list{display:grid;gap:12px;padding:18px}.how{max-width:1180px;margin:0 auto;padding:0 clamp(20px,5vw,48px) 110px;display:grid;grid-template-columns:.65fr 1.35fr;gap:70px}.how .section-label{margin-bottom:12px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.steps article{border-top:1px solid var(--line);padding-top:16px}.steps b{font:700 12px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--orange)}.steps h3{font-size:16px;margin:23px 0 8px}.steps p{font-size:13px;line-height:1.65;color:var(--muted);margin:0}footer{border-top:1px solid var(--line);padding:28px clamp(20px,5vw,72px);display:flex;align-items:center;gap:22px;color:#708078;font-size:11px}.footer-brand{font-size:16px;color:var(--ink)}footer p{margin:0;flex:1}.footer-links{display:flex;gap:18px}.footer-links a:hover{color:var(--green)}.loading-overlay{position:fixed;inset:0;background:#f7faf7dd;backdrop-filter:blur(8px);z-index:50;display:grid;place-items:center;text-align:center}.loader{width:35px;height:35px;border:2px solid #b8d7c4;border-top-color:var(--green);border-radius:50%;animation:spin 1s linear infinite;margin:auto}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:760px){.topbar{height:64px}.nav a:not(.nav-button){display:none}.nav-button{padding:8px 10px}.hero{grid-template-columns:1fr;padding-top:72px;padding-bottom:54px;gap:34px}.hero-mark{width:130px;height:130px;justify-self:start;font-size:24px}.mark-ring{width:92px;height:92px}.mark-slice{width:180px;height:22px}.hero-mark span{padding:6px 4px 6px 1px}.dropzone{margin:0 20px 72px;min-height:280px}.preview-shell,.batch-shell{margin-left:20px;margin-right:20px}.comparison-stage{min-height:300px;padding:14px}.preview-header{padding:18px;display:block}.preview-meta{margin-top:12px}.preview-actions{padding:15px 18px;flex-wrap:wrap}.how{grid-template-columns:1fr;gap:30px;padding-bottom:75px}.steps{grid-template-columns:1fr;gap:22px}footer{display:grid;gap:14px}.footer-links{flex-wrap:wrap}.trust-row{gap:9px;line-height:1.5}}
.policy{max-width:780px;margin:0 auto;padding:90px 24px 110px}.policy h1{font-size:clamp(42px,7vw,70px);margin-bottom:25px}.policy-lead{font-size:18px;line-height:1.75;color:var(--muted);max-width:680px}.policy section{margin-top:48px;border-top:1px solid var(--line);padding-top:20px}.policy section h2{font-size:18px;letter-spacing:-.03em;margin:0 0 10px}.policy section p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
.hero-cn{margin:10px 0 0;color:var(--green);font-size:15px;font-weight:700}.translation{color:var(--muted);font-size:12px;line-height:1.65;margin:8px 0 0}.nav small,.preview-header h2 small,.preview-actions small,.steps h3 small,.footer-links small{display:block;font-size:10px;font-weight:500;letter-spacing:0;color:var(--muted);margin-top:2px}.nav small{font-size:9px}.nav-button small{color:inherit;opacity:.7}.trust-row i,.tag i{font-style:normal;font-weight:500;opacity:.72}.choose-button span{font-size:10px;margin-left:8px;color:#bdd3c8}.tag i{display:block;font-size:9px;margin-top:2px}.steps p span,.dropzone-note span,footer p span{font-size:11px;color:var(--muted)}.dropzone-inner>.translation{margin-top:8px}.policy{max-width:780px;margin:0 auto;padding:90px 24px 110px}.policy h1{font-size:clamp(42px,7vw,70px);margin-bottom:25px}.policy-lead{font-size:18px;line-height:1.75;color:var(--muted);max-width:680px}.policy section{margin-top:48px;border-top:1px solid var(--line);padding-top:20px}.policy section h2{font-size:18px;letter-spacing:-.03em;margin:0 0 10px}.policy section p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}@media(max-width:760px){.nav small{display:none}.trust-row i{display:block}.hero-cn{font-size:14px}}
.language-toggle{padding:8px 11px;border:1px solid #b7d4c4;border-radius:5px;background:transparent;color:var(--green);font-size:12px;font-weight:750}.language-toggle:hover{background:var(--mint)}.hero-mark{background:transparent}.hero-mark img{display:block;width:154px;height:154px}.brand img,.footer-brand img{width:28px;height:28px}.nav-button{display:none}@media(max-width:760px){.language-toggle{padding:7px 9px}.hero-mark img{width:86px;height:86px}}
/* Editorial upload workspace */
.hero{display:flex;max-width:1100px;padding:64px 24px 74px;gap:24px;align-items:center;flex-direction:column;position:relative}.hero-copy{text-align:center;z-index:2}.hero-copy h1{font-size:clamp(38px,4vw,56px);line-height:1.08;max-width:700px;margin:0 auto}.hero-text{margin:15px auto 18px;max-width:590px;font-size:16px;line-height:1.65}.trust-row{justify-content:center;gap:14px;font-size:11px}.hero-art{position:absolute;width:154px;height:190px;object-fit:cover;box-shadow:0 12px 25px rgba(27,36,32,.12);z-index:0}.hero-art-left{left:0;top:170px;transform:rotate(-8deg)}.hero-art-right{right:0;top:180px;transform:rotate(8deg)}.mode-switch{display:inline-flex;gap:3px;padding:4px;border-radius:30px;background:#e7e9e8;margin-top:7px}.mode-switch button,.mode-switch a{padding:9px 22px;border-radius:24px;border:0;background:transparent;color:#758079;font-size:13px;font-weight:700}.mode-switch .mode-active{background:#fff;color:var(--ink);box-shadow:0 1px 4px rgba(20,30,26,.12)}.mode-switch span{font-size:10px;font-weight:500;margin-left:4px}.upload-workspace{width:min(760px,100%);min-height:300px;margin:10px 0 0;border:1px solid #d7ded9;border-radius:12px;background:#fff;box-shadow:0 10px 26px rgba(22,32,29,.08);padding:16px;z-index:2}.upload-workspace:before,.upload-workspace:after{display:none}.upload-workspace .dropzone-inner{width:100%;height:264px;max-width:none;border:2px dashed #ccd7d1;border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fbfcfb;transition:border-color .15s,background .15s}.upload-workspace:hover .dropzone-inner{border-color:#81b89a;background:#f7fbf8}.upload-workspace .upload-icon{width:52px;height:52px;margin-bottom:15px;background:#f3f7f4;border-color:transparent}.upload-workspace .upload-icon svg{width:24px;height:24px}.upload-label{display:none}.upload-workspace h2{font-size:20px;line-height:1.2;margin-bottom:8px}.upload-workspace .choose-button{display:none}.upload-workspace .dropzone-note{bottom:30px}.dropzone-note{bottom:16px}.status{margin-top:-50px}
@media(max-width:760px){.hero{padding:38px 20px 52px;gap:22px}.hero-copy h1{font-size:38px;line-height:1.1}.hero-text{margin:13px auto 16px;font-size:15px}.trust-row{justify-content:flex-start;gap:8px;line-height:1.5}.hero-art{display:none}.upload-workspace{min-height:270px;padding:12px;border-radius:8px}.upload-workspace .dropzone-inner{height:244px}.upload-workspace h2{font-size:19px}.upload-workspace .upload-icon{width:48px;height:48px;margin-bottom:13px}.upload-workspace .dropzone-note{bottom:24px}.status{margin-top:-40px}}