:root{--blue:#1768e5;--dark:#10233f;--muted:#66758a;--line:#dfe7f2;--bg:#f5f8fc;--white:#fff;--red:#c83838}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--dark);background:var(--bg)}.wrap{width:min(1120px,calc(100% - 36px));margin:auto}header{height:72px;background:#fff;border-bottom:1px solid var(--line)}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{font-size:23px;font-weight:800;letter-spacing:1.2px;color:var(--dark);text-decoration:none}.brand b{color:var(--blue)}nav{display:flex;gap:28px}nav a{color:#526176;text-decoration:none;font-weight:600}nav a.active,nav a:hover{color:var(--blue)}.hero{text-align:center;padding:62px 0 105px;background:linear-gradient(140deg,#edf5ff,#fff 55%,#edf4ff)}.badge{display:inline-block;color:var(--blue);background:#e8f1ff;border-radius:99px;padding:8px 13px;font-size:12px;font-weight:800;letter-spacing:.7px}.hero h1{font-size:clamp(38px,6vw,58px);margin:18px 0 9px;letter-spacing:-2px}.hero p{margin:0;color:var(--muted);font-size:18px}.workspace{max-width:790px;margin-top:-62px;margin-bottom:70px}.drop-zone,.editor{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 16px 45px rgba(39,73,120,.1)}.drop-zone{min-height:360px;border:2px dashed #bfd2ed;text-align:center;padding:55px 25px;transition:.2s}.drop-zone.drag{border-color:var(--blue);background:#f1f7ff;transform:translateY(-2px)}.file-icon,.pdf-mark{display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,#3687f1,#1458c6);font-weight:900}.file-icon{width:70px;height:82px;border-radius:9px 9px 14px 9px;margin:auto}.drop-zone h2{margin:20px 0 5px;font-size:24px}.drop-zone p{margin:0 0 20px;color:var(--muted)}.drop-zone small{display:block;color:#8995a5;margin-top:16px}.primary{border:0;background:var(--blue);color:#fff;border-radius:10px;padding:13px 25px;font:inherit;font-weight:750;cursor:pointer;box-shadow:0 7px 18px rgba(23,104,229,.22)}.primary:hover{background:#0e59cb}.primary:disabled{opacity:.55;cursor:not-allowed}.editor{padding:28px}.file-summary{display:flex;align-items:center;gap:14px;padding-bottom:22px;border-bottom:1px solid var(--line)}.pdf-mark{width:47px;height:54px;border-radius:7px;font-size:12px;flex:none}.file-summary>div:nth-child(2){min-width:0;display:flex;flex-direction:column;flex:1}.file-summary strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-summary span{color:var(--muted);font-size:13px;margin-top:4px}.text-btn{color:var(--blue);border:0;background:none;font-weight:700;cursor:pointer}fieldset{border:0;padding:0;margin:27px 0}legend{font-weight:800;margin-bottom:12px}.mode{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--line);border-radius:12px;padding:16px;margin:10px 0;cursor:pointer}.mode.selected{border-color:#75aaf1;background:#f1f7ff}.mode input{margin-top:4px;accent-color:var(--blue)}.mode span{display:flex;flex-direction:column}.mode small{color:var(--muted);margin-top:3px}.range-panel label{display:block;font-weight:800;margin-bottom:8px}.range-panel>input{width:100%;height:50px;border:1px solid #cbd7e6;border-radius:9px;padding:0 14px;font:inherit;outline:0}.range-panel>input:focus{border-color:var(--blue);box-shadow:0 0 0 3px #e3efff}.range-panel>small{display:block;color:var(--muted);margin-top:9px}.examples{display:flex;align-items:center;gap:8px;margin-top:9px;color:var(--muted);font-size:13px}.examples button{border:1px solid #cdd9e8;background:#fff;border-radius:20px;color:var(--blue);cursor:pointer;padding:4px 9px}.message{min-height:24px;margin:18px 0 8px;font-size:14px;color:var(--muted)}.message.error{color:var(--red)}.message.success{color:#16704b}.split-btn{width:100%;font-size:17px}.privacy{text-align:center;color:var(--muted);font-size:12px;margin:14px 0 0}footer{background:#0d203a;color:#b5c2d3;padding:35px 0}footer .brand{color:#fff}footer p{margin:8px 0 0}@media(max-width:640px){header{height:64px}nav a:not(.active){display:none}.hero{padding:42px 0 90px}.hero p{font-size:15px}.workspace{margin-top:-52px}.drop-zone{min-height:320px;padding:42px 16px}.editor{padding:19px 15px}.file-summary{align-items:flex-start}.text-btn{padding:4px}.mode{padding:13px}.examples{flex-wrap:wrap}}