:root{--ink:#111311;--paper:#f4f4f0;--panel:#fff;--line:#d7d8d2;--soft:#e9eae5;--muted:#72756e;--acid:#c8ff45;--danger:#9f3427}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Helvetica Neue",Arial,"PingFang SC",sans-serif;letter-spacing:0}.topbar{height:68px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 30px;position:sticky;top:0;z-index:20}.brand{font-weight:800;font-size:16px;color:#fff;text-decoration:none;letter-spacing:0}.brand span{color:var(--acid);margin:0 3px}.top-actions{display:flex;align-items:center;gap:20px}.connection{font-size:12px;color:#b8bbb3;display:flex;align-items:center;gap:8px}.connection i{width:7px;height:7px;border-radius:50%;background:#d8b93f}.connection.online i{background:var(--acid)}.icon-button{width:34px;height:34px;border:1px solid #4a4d47;background:transparent;color:#fff;font-size:22px;cursor:pointer}.workspace{display:grid;grid-template-columns:244px minmax(0,1fr);min-height:calc(100vh - 68px)}.rail{border-right:1px solid var(--line);padding:30px 20px 20px;display:flex;flex-direction:column;position:sticky;top:68px;height:calc(100vh - 68px)}.project-heading label,.field>span{display:block;color:var(--muted);font-size:10px;text-transform:uppercase;margin-bottom:8px;font-weight:700}.project-heading input{width:100%;border:0;background:transparent;font-size:15px;font-weight:700;padding:0;outline:0}.steps{display:flex;flex-direction:column;margin-top:42px}.step{text-align:left;border:0;border-top:1px solid var(--line);background:transparent;padding:17px 4px;display:grid;grid-template-columns:30px 1fr;cursor:pointer;color:var(--ink)}.step>span{font-size:10px;color:#979a92;grid-row:1/3}.step strong{font-size:13px}.step small{font-size:10px;color:var(--muted);margin-top:4px}.step.active{border-top-color:var(--ink)}.step.active>span{color:var(--ink);font-weight:800}.rail-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:14px;display:flex;justify-content:space-between;color:var(--muted);font-size:9px}.canvas{width:min(100%,1100px);padding:54px clamp(28px,5vw,72px) 100px}.canvas-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:50px}.eyebrow{font-size:9px;font-weight:800;color:var(--muted);margin:0 0 9px}.canvas h1{font-family:Georgia,"Songti SC",serif;font-size:48px;font-weight:400;margin:0}.status-pill{border:1px solid var(--line);padding:8px 13px;font-size:10px;background:#fff}.notice{padding:13px 16px;border-left:3px solid var(--danger);background:#fff3ef;color:var(--danger);font-size:12px;margin-bottom:25px}.hidden{display:none!important}.section-block{border-top:1px solid var(--ink);padding:20px 0 48px;margin-bottom:10px}.muted-section{border-top-color:var(--line)}.section-title{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:22px}.section-title>div{display:flex;align-items:baseline;gap:16px}.section-title span{font-size:10px;color:var(--muted)}.section-title h2,.result-head h2{font-size:18px;margin:0}.section-title p{font-size:11px;color:var(--muted);margin:3px 0}.dropzone{height:360px;background:#e3e4df;border:1px solid transparent;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;cursor:pointer;transition:border-color .2s,background .2s}.dropzone:hover{border-color:#999c94;background:#dedfd9}.dropzone.compact{height:280px}.dropzone input{display:none}.drop-content{text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}.drop-content b{font-size:26px;font-weight:300}.drop-content strong{font-size:13px}.drop-content small{font-size:10px;color:var(--muted)}.media-preview{width:100%;height:100%;object-fit:contain;background:#171917;position:absolute;z-index:2}.upload-progress{position:absolute;bottom:0;left:0;right:0;height:3px;background:transparent;z-index:3}.upload-progress i{display:block;height:100%;width:0;background:var(--acid);transition:width .15s}.section-actions{display:flex;justify-content:flex-end;margin-top:14px}.secondary,.primary{border:0;font-family:inherit;font-weight:700;cursor:pointer}.secondary{background:transparent;border-bottom:1px solid var(--ink);padding:9px 0;font-size:11px}.secondary:disabled,.primary:disabled{opacity:.35;cursor:not-allowed}.empty-line{border:1px dashed #c4c6bf;min-height:100px;display:grid;place-items:center;color:var(--muted);font-size:11px}.frame-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.frame{border:2px solid transparent;padding:0;background:transparent;cursor:pointer;position:relative;aspect-ratio:3/4;overflow:hidden}.frame img{width:100%;height:100%;object-fit:cover;display:block}.frame.selected{border-color:var(--ink)}.frame.selected:after{content:"已选择";position:absolute;right:6px;top:6px;background:var(--acid);font-size:9px;padding:5px 7px;font-weight:800}.field textarea{width:100%;border:1px solid var(--line);background:#fff;padding:14px;resize:vertical;font:12px/1.6 inherit;outline:0;border-radius:0}.field textarea:focus{border-color:var(--ink)}.setting-row{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:20px 0}.setting-row strong{font-size:12px;display:block}.setting-row small{font-size:10px;color:var(--muted)}.switch input{display:none}.switch i{display:block;width:38px;height:20px;background:#c5c7c0;border-radius:20px;position:relative;cursor:pointer}.switch i:after{content:"";width:14px;height:14px;background:#fff;border-radius:50%;position:absolute;top:3px;left:3px;transition:left .2s}.switch input:checked+i{background:var(--ink)}.switch input:checked+i:after{left:21px;background:var(--acid)}.primary{width:100%;height:54px;background:var(--ink);color:#fff;margin-top:24px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;font-size:12px}.primary:not(:disabled):hover{background:#252824}.primary i{font-style:normal;font-size:18px;color:var(--acid)}.result-section{border-top:1px solid var(--ink);padding-top:28px}.result-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:20px}.download{font-size:11px;color:var(--ink);text-decoration:none;border-bottom:1px solid;padding-bottom:5px}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.compare-grid>div{background:var(--ink);position:relative;aspect-ratio:9/16;max-height:600px}.compare-grid span{position:absolute;z-index:2;top:10px;left:10px;color:#fff;background:#111c;padding:6px 8px;font-size:9px}.compare-grid video{width:100%;height:100%;object-fit:contain}.busy:after{content:"";position:absolute;width:24px;height:24px;border:2px solid #fff;border-top-color:var(--acid);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.generation-progress{margin-top:18px;border:1px solid var(--line);background:#fff;padding:16px}.progress-meta,.progress-time{display:flex;align-items:center;justify-content:space-between}.progress-meta strong{font-size:11px}.progress-meta span{font-size:11px;font-variant-numeric:tabular-nums}.progress-track{height:5px;background:var(--soft);margin:13px 0 10px;overflow:hidden}.progress-track i{display:block;width:0;height:100%;background:var(--ink);transition:width 1s ease}.progress-time{color:var(--muted);font-size:9px}
.upload-status{position:absolute;z-index:5;left:50%;top:50%;transform:translate(-50%,-50%);width:min(360px,calc(100% - 40px));padding:18px;background:#111311eb;color:#fff;box-shadow:0 12px 30px #0003}.upload-status-head{display:flex;align-items:center;justify-content:space-between}.upload-status-head strong{font-size:11px}.upload-status-head span{font-size:18px;font-weight:400;font-variant-numeric:tabular-nums}.upload-status-track{height:5px;background:#4b4e48;margin:14px 0 9px;overflow:hidden}.upload-status-track i{display:block;width:0;height:100%;background:var(--acid);transition:width .3s ease}.upload-status>small{display:block;color:#bfc2ba;font-size:9px}.upload-status.error .upload-status-track i{background:#ff725f}
.section-actions{gap:20px}
@media(max-width:760px){.topbar{height:58px;padding:0 16px}.connection{display:none}.workspace{display:block}.rail{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line);padding:18px 16px}.project-heading,.rail-foot{display:none}.steps{margin:0;display:grid;grid-template-columns:repeat(4,1fr)}.step{padding:10px 3px;display:block}.step>span{display:block;margin-bottom:5px}.step small{display:none}.canvas{padding:28px 16px 70px}.canvas-head{margin-bottom:32px}.canvas h1{font-size:36px}.section-title p{display:none}.dropzone{height:320px}.dropzone.compact{height:240px}.frame-grid{grid-template-columns:repeat(3,1fr)}.compare-grid{grid-template-columns:1fr}.compare-grid>div{max-height:520px}}