:root{
    --bg:#f3f4f5;
    --panel:#ffffff;
    --line:#d9dde2;
    --line2:#edf0f2;
    --text:#111418;
    --muted:#777f89;
    --dark:#0b0e10;
    --dark2:#15191d;
    --accent:#000000;
    --soft:#f7f8f9;
    --bluegrey:#e9eef3;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.45}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.shell{min-height:100vh;display:grid;grid-template-columns:235px 280px minmax(520px,1fr) 470px;background:var(--bg)}
.side{background:linear-gradient(180deg,#070809,#161b1f);color:#fff;display:flex;flex-direction:column;border-right:1px solid #222831;min-height:100vh}
.brand-block{height:120px;padding:28px 28px 22px;border-bottom:1px solid rgba(255,255,255,.08);background:radial-gradient(circle at top left,rgba(255,255,255,.08),transparent 42%)}
.brand-title{font-size:24px;line-height:1.15;letter-spacing:8px;font-weight:500}
.brand-sub{margin-top:10px;color:#9fa6ad;font-size:10px;letter-spacing:4px;font-weight:600}
.nav{padding:22px 0;display:flex;flex-direction:column;gap:2px}
.nav-item{height:46px;padding:0 24px;border:0;background:transparent;color:#c6ccd2;text-align:left;display:flex;gap:13px;align-items:center;text-transform:uppercase;font-size:12px;letter-spacing:.7px}
.nav-item span{font-size:11px;color:#838b92;width:22px}
.nav-item.active,.nav-item:hover{background:rgba(255,255,255,.09);color:#fff}
.nav-item.active span{color:#fff}
.pdf-form{margin:auto 18px 20px;display:flex;flex-direction:column;gap:10px}
.side-action{height:43px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.02);color:#fff;text-transform:uppercase;letter-spacing:.8px;font-size:12px;border-radius:2px}
.side-action:hover{background:#fff;color:#000}
.side-bottom{padding:0 18px 24px;display:flex;flex-direction:column;gap:7px}
.side-link{border:0;background:transparent;color:#b8bec5;text-align:left;padding:8px 6px;text-transform:uppercase;letter-spacing:.7px;font-size:11px}
.side-link:hover{color:#fff}
.project-panel{background:#fafafa;border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}
.panel-section{padding:20px 28px;border-bottom:1px solid var(--line2)}
.panel-section.compact{padding-top:34px}.panel-section.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}.panel-section.grow{flex:1;min-height:200px}.label{font-size:11px;text-transform:uppercase;letter-spacing:.8px;color:#7a828c;margin-bottom:12px}.plain-input,.plain-area{width:100%;border:1px solid transparent;background:transparent;border-bottom-color:#d6dbe0;padding:8px 0;color:#111;outline:none}.plain-input:focus,.plain-area:focus{border-bottom-color:#111}.plain-input.big{font-size:17px;font-weight:600}.plain-area{min-height:120px;resize:vertical;background:#fff;border:1px solid var(--line);padding:12px}.panel-footer{padding:16px 28px;border-top:1px solid var(--line);color:#8a929a;font-size:12px}
.workspace{display:flex;flex-direction:column;min-width:0}.topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;gap:20px}.stepper{display:flex;align-items:center;gap:4px;overflow:auto;min-width:0}.step{height:72px;border:0;background:transparent;display:flex;align-items:center;gap:10px;color:#7f8790;padding:0 11px;border-bottom:2px solid transparent;white-space:nowrap}.step b{display:inline-flex;width:26px;height:26px;border-radius:50%;border:1px solid #cfd4da;align-items:center;justify-content:center;font-size:12px}.step span{text-transform:uppercase;font-size:11px;letter-spacing:.6px}.step.active{color:#111;border-bottom-color:#111}.step.active b{background:#111;color:#fff;border-color:#111}.top-actions{display:flex;gap:10px;flex-shrink:0}.ghost-btn,.dark-btn{height:38px;padding:0 18px;border-radius:2px;text-transform:uppercase;letter-spacing:.8px;font-size:11px}.ghost-btn{border:1px solid var(--line);background:#fff;color:#333}.dark-btn{border:1px solid #000;background:#000;color:#fff}.stage{padding:44px 34px 70px;background:#fff;min-height:calc(100vh - 72px);overflow:auto}.page{display:none;max-width:860px}.page.active{display:block}.page h1{font-size:25px;margin:0 0 34px;letter-spacing:.5px}.form-row{margin-bottom:28px}.form-row label,.editor-grid label{display:block;font-size:12px;text-transform:uppercase;font-weight:700;letter-spacing:.55px;margin-bottom:10px}.inline-control{display:grid;grid-template-columns:1fr auto;gap:10px;max-width:620px}.inline-control input,.form-row input,.form-row textarea,.editor-grid textarea{width:100%;border:1px solid var(--line);border-radius:3px;background:#fff;padding:12px 14px;outline:none}.inline-control button{border:1px solid #111;background:#111;color:#fff;border-radius:3px;padding:0 18px;text-transform:uppercase;font-size:11px;letter-spacing:.8px}.form-row textarea,.editor-grid textarea{min-height:94px;resize:vertical}.hint-line{font-size:12px;color:#6f7780;margin-top:8px}.chips{display:flex;flex-wrap:wrap;gap:10px}.chips button{min-height:36px;border:1px solid #d3d8dd;background:#fff;color:#111;padding:0 17px;border-radius:3px;font-size:13px}.chips button.active{background:#000;color:#fff;border-color:#000}.chips button:hover{border-color:#000}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:6px 28px}.matrix{border:1px solid var(--line);background:#fbfbfc;padding:24px;max-width:720px;margin-bottom:28px}.slider-line{display:grid;grid-template-columns:120px 1fr 120px;align-items:center;gap:16px;margin:17px 0;color:#555}.slider-line span:last-child{text-align:right}.slider-line input{accent-color:#111}.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px 24px}.editor-grid label{margin-bottom:0}.editor-grid textarea{margin-top:10px;min-height:120px;text-transform:none;font-weight:400;letter-spacing:0;line-height:1.4}.editor-grid label:first-child{grid-column:1/-1}.editor-grid label:first-child textarea{min-height:88px;font-weight:600}.preview-panel{background:#eef0f2;border-left:1px solid var(--line);padding:28px;overflow:auto;min-width:0}.preview-head{height:34px;display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.preview-head span{text-transform:uppercase;font-size:12px;font-weight:700;letter-spacing:.7px}.preview-head button{height:32px;border:1px solid var(--line);background:#fff;padding:0 12px;font-size:11px;text-transform:uppercase;letter-spacing:.7px}.paper-wrap{display:flex;flex-direction:column;gap:22px;align-items:center}.pdf-page{width:100%;max-width:385px;aspect-ratio:1/1.414;background:#fff;box-shadow:0 12px 35px rgba(0,0,0,.14);padding:30px;position:relative;color:#111}.pdf-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:36px;text-transform:uppercase;letter-spacing:2px;font-size:8px;color:#222}.pdf-title{font-size:24px;letter-spacing:1.5px;margin:0 0 5px;text-transform:uppercase}.pdf-sub{font-size:12px;margin-bottom:18px}.pdf-meta{display:grid;grid-template-columns:1fr 1fr;gap:8px;font-size:8.5px;margin:18px 0 28px}.pdf-meta b{display:block;font-size:7px;text-transform:uppercase;color:#777;margin-bottom:2px}.pdf-section{border-top:1px solid #cfd4d9;padding-top:13px;margin-top:13px;font-size:8.3px;display:grid;grid-template-columns:1fr 112px;gap:18px}.pdf-section h3{font-size:9px;text-transform:uppercase;margin:0 0 8px}.pdf-section p{margin:0;color:#333}.comment-box{background:#e8edf2;border:1px solid #d4dbe2;padding:9px;height:78px}.comment-box b{display:block;text-transform:uppercase;font-size:6.5px;margin-bottom:8px}.comment-line{border-bottom:1px solid #bcc6cf;height:12px}.pdf-foot{position:absolute;bottom:18px;left:30px;right:30px;font-size:7px;color:#555;display:flex;justify-content:space-between;border-top:1px solid #d8dde2;padding-top:8px}.preview-actions{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-top:24px}.preview-actions button{height:38px;border:1px solid #111;background:#fff;text-transform:uppercase;font-size:10px;letter-spacing:.7px}.preview-actions button:first-child{background:#111;color:#fff}
@media (max-width:1500px){.shell{grid-template-columns:220px 250px minmax(460px,1fr) 390px}.pdf-page{max-width:330px;padding:24px}.pdf-section{grid-template-columns:1fr 98px}.comment-box{height:65px}.step span{display:none}.topbar{padding:0 18px}.stage{padding:34px 24px}}
@media (max-width:1150px){.shell{grid-template-columns:210px 1fr}.project-panel{display:none}.preview-panel{grid-column:1/-1;border-left:0;border-top:1px solid var(--line)}.workspace{min-height:650px}.side{grid-row:1/3}.paper-wrap{flex-direction:row;align-items:flex-start;overflow:auto}.pdf-page{min-width:330px}}
@media (max-width:780px){.shell{display:block}.side{min-height:auto}.brand-block{height:auto}.nav{display:grid;grid-template-columns:1fr 1fr;padding:10px}.nav-item{height:38px;padding:0 12px}.pdf-form{margin:12px;display:grid;grid-template-columns:1fr 1fr 1fr}.side-bottom{display:none}.topbar{height:auto;flex-direction:column;align-items:stretch;padding:12px}.stage{padding:24px 16px}.grid-2,.editor-grid{grid-template-columns:1fr}.preview-panel{padding:18px}.pdf-form .side-action{font-size:10px}}