:root{--blue:#3157d5;--dark:#203da6;--ink:#172033;--muted:#667085;--line:#e5e7eb;--bg:#f6f8fc;--soft:#eef2ff;--white:#fff;--danger:#c93f55;--shadow:0 14px 38px rgba(23,32,51,.09)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--ink)}a{text-decoration:none;color:inherit}.wrap{width:min(1120px,calc(100% - 28px));margin:auto}header{height:68px;background:#fff;border-bottom:1px solid var(--line)}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:22px;font-weight:900;letter-spacing:.08em}.brand b{color:var(--blue)}nav{display:flex;gap:7px}nav a{padding:10px 12px;border-radius:10px;color:var(--muted);font-size:14px;font-weight:700}nav a.active,nav a:hover{background:var(--soft);color:var(--blue)}.intro{text-align:center;padding:54px 0 30px;background:linear-gradient(180deg,#fff,#f7f9fd)}.crumb{font-size:13px;color:var(--blue);font-weight:750}.intro h1{font-size:clamp(34px,5vw,50px);letter-spacing:-.04em;margin:13px 0 10px}.intro p{max-width:650px;margin:auto;color:var(--muted);line-height:1.6}.panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;margin:24px auto 55px;box-shadow:var(--shadow)}.upload{padding:48px 20px;text-align:center;border:2px dashed #cbd5e1;border-radius:18px;background:#fbfcff;transition:.2s}.upload.over{border-color:var(--blue);background:var(--soft)}.pdfmark{width:58px;height:68px;margin:0 auto 14px;border-radius:9px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:900}.upload h2{margin:0 0 7px}.upload p{color:var(--muted);margin:0 0 20px}.primary,.secondary,.danger{border:0;border-radius:10px;padding:11px 16px;font-weight:800;cursor:pointer}.primary{background:var(--blue);color:#fff}.primary:hover{background:var(--dark)}.secondary{background:var(--soft);color:var(--blue)}.danger{background:#ffedf0;color:var(--danger)}button:disabled{opacity:.45;cursor:not-allowed}.workspace{display:none}.workspace.show{display:block}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:19px}.toolbar>div{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.status{font-size:13px;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.page{position:relative;border:1px solid var(--line);border-radius:15px;background:#f8fafc;padding:10px;cursor:grab;transition:.18s}.page:hover{border-color:#aebdeb;box-shadow:0 8px 20px rgba(23,32,51,.08)}.page.dragging{opacity:.35}.page.deleted{opacity:.45;background:#fff0f2}.thumb{aspect-ratio:.72;background:#fff;border:1px solid #e7e9ee;border-radius:7px;display:grid;place-items:center;overflow:hidden}.thumb canvas{display:block;max-width:100%;max-height:100%}.page-foot{display:flex;align-items:center;justify-content:space-between;margin-top:9px;gap:5px}.page-foot strong{font-size:12px}.mini{width:30px;height:30px;padding:0;border:0;border-radius:8px;background:var(--soft);color:var(--blue);font-weight:900;cursor:pointer}.mini.del{background:#ffedf0;color:var(--danger)}.deleted .mini.del{background:#e9f8ef;color:#21835a}.notice{border-radius:12px;background:#fff7e8;color:#8a5812;padding:12px 14px;font-size:13px;line-height:1.5;margin:15px 0}.progress{display:none;margin-top:15px}.progress.show{display:block}.track{height:9px;background:#e8ecf3;border-radius:99px;overflow:hidden}.fill{height:100%;width:0;background:var(--blue);transition:width .15s}.progress p{font-size:12px;color:var(--muted);margin:7px 0 0}.modes{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0}.mode{border:1px solid var(--line);border-radius:15px;padding:18px;cursor:pointer}.mode.selected{border:2px solid var(--blue);background:#f8faff;padding:17px}.mode input{accent-color:var(--blue)}.mode h3{margin:0 0 6px;font-size:17px}.mode p{margin:0;color:var(--muted);font-size:13px;line-height:1.45}.settings{padding:17px;background:#f8fafc;border-radius:14px}.settings label{display:flex;justify-content:space-between;font-size:14px;font-weight:750}.settings input{width:100%;accent-color:var(--blue);margin-top:12px}.result{display:none;padding:17px;background:#ecf9f2;color:#176c48;border-radius:13px;margin-top:15px;font-size:14px}.result.show{display:block}footer{background:#fff;border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:13px}.foot{display:flex;align-items:center;justify-content:space-between}.hide{display:none!important}
@media(max-width:820px){.grid{grid-template-columns:repeat(3,1fr)}nav{display:none}.toolbar{align-items:flex-start;flex-direction:column}.toolbar>div{width:100%}.toolbar .primary{margin-left:auto}}
@media(max-width:560px){.wrap{width:calc(100% - 20px)}.intro{padding:38px 0 22px}.panel{padding:14px;margin-top:16px}.upload{padding:34px 12px}.grid{grid-template-columns:repeat(2,1fr);gap:10px}.modes{grid-template-columns:1fr}.toolbar .primary{width:100%;margin:0}.foot{flex-direction:column;align-items:flex-start;gap:8px}}