:root{--primary-blue:#2563EB;--accent-green:#10B981;--dark-gray:#1F2937;--light-gray:#F8FAFC;--white:#FFFFFF;--gradient-primary:linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);--gradient-accent:linear-gradient(135deg, #10B981 0%, #059669 100%);--border:#E5E7EB}*{margin:0;padding:0;box-sizing:border-box}body{font-family:"Inter",sans-serif;background:#f1f5f9;color:#374151;line-height:1.6}.modern-header{background:rgba(255,255,255,.98);backdrop-filter:blur(20px);border-bottom:1px solid rgba(229,231,235,.8);transition:all .4s cubic-bezier(.4,0,.2,1);box-shadow:0 1px 3px rgba(0,0,0,.02);position:fixed;width:100%;top:0;z-index:1000}.modern-header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.08);background:rgba(255,255,255,.98)}.brand-logo{font-size:1.8rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;position:relative;text-decoration:none}.brand-logo::after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--gradient-accent);transition:width .3s ease}.brand-logo:hover::after{width:100%}.mobile-menu-button{display:none;background:0 0;border:0;font-size:1.5rem;color:var(--dark-gray);cursor:pointer;padding:.5rem}.mobile-menu{display:none;position:absolute;top:100%;left:0;width:100%;background:#fff;box-shadow:0 4px 20px rgba(0,0,0,.1);border-top:1px solid rgba(229,231,235,.8);z-index:100}.mobile-menu.active{display:block}.mobile-nav-item{display:block;padding:1rem 1.5rem;color:var(--dark-gray);text-decoration:none;border-bottom:1px solid rgba(229,231,235,.8);transition:all .3s ease}.mobile-nav-item:hover{background:var(--light-gray);color:var(--primary-blue)}.mobile-dropdown{padding-left:2rem}.mobile-dropdown-item{display:block;padding:.75rem 1.5rem;color:#6b7280;text-decoration:none;border-bottom:1px solid rgba(229,231,235,.5);transition:all .3s ease}.mobile-dropdown-item:hover{background:var(--light-gray);color:var(--primary-blue)}.desktop-nav{display:block}.nav-dropdown{position:relative}.dropdown-menu{position:absolute;top:100%;left:0;background:#fff;border-radius:12px;box-shadow:0 15px 40px rgba(0,0,0,.1);min-width:220px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .3s ease;z-index:1000;border:1px solid rgba(229,231,235,.8);overflow:hidden}.dropdown-menu::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--gradient-primary)}.nav-dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{display:block;padding:12px 20px;color:#374151;text-decoration:none;border-bottom:1px solid rgba(243,244,246,.8);transition:all .2s ease;position:relative}.dropdown-item:hover{background:#f8fafc;color:var(--primary-blue);padding-left:28px}.dropdown-item:hover::before{content:"→";position:absolute;left:15px;color:var(--primary-blue)}.dropdown-item:last-child{border-bottom:none}.header-container{max-width:1400px;margin:0 auto;padding:0 1.5rem}.header-content{display:flex;justify-content:space-between;align-items:center;height:64px}.nav-links{display:flex;align-items:center;gap:2rem}.nav-link{color:#64748b;text-decoration:none;font-weight:500;transition:color .3s}.nav-link:hover{color:#2563eb}.dropdown-button{color:#64748b;background:0 0;border:0;font-weight:500;cursor:pointer;transition:color .3s;display:flex;align-items:center;gap:.25rem;font-size:1rem;font-family:"Inter",sans-serif}.dropdown-button:hover{color:#2563eb}.footer{background:#1e293b;color:#cbd5e1;padding:3rem 0 2rem;margin-top:3rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2rem}.footer-section h3{color:#fff;margin-bottom:1.2rem;font-size:1.2rem}.footer-links{list-style:none}.footer-links li{margin-bottom:.7rem}.footer-links a{color:#94a3b8;text-decoration:none;transition:color .3s}.footer-links a:hover{color:#fff}.copyright{text-align:center;padding-top:2rem;border-top:1px solid #334155;color:#94a3b8;font-size:.9rem}#landing{padding:120px 20px 70px;max-width:980px;margin:0 auto}.badge{display:inline-flex;align-items:center;gap:8px;background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;padding:6px 14px;border-radius:999px;font-size:.82rem;font-weight:600}#landing h1{font-size:clamp(2rem,5vw,3rem);font-weight:800;color:#0f172a;line-height:1.15;margin:18px 0 14px}#landing h1 span{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}#landing .lead{font-size:1.08rem;color:#64748b;max-width:640px}.dropzone{margin-top:32px;background:#fff;border:2px dashed #cbd5e1;border-radius:20px;padding:52px 24px;text-align:center;cursor:pointer;transition:all .25s ease}.dropzone:hover,.dropzone.drag{border-color:var(--primary-blue);background:#f8faff;transform:translateY(-2px);box-shadow:0 18px 40px rgba(37,99,235,.1)}.dz-icon{width:74px;height:74px;margin:0 auto 18px;border-radius:20px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.9rem;box-shadow:0 12px 28px rgba(37,99,235,.28)}.btn-primary{background:var(--gradient-primary);color:#fff;border:0;padding:12px 26px;border-radius:12px;font-weight:600;font-size:.95rem;cursor:pointer;transition:all .25s ease;box-shadow:0 8px 20px rgba(37,99,235,.25)}.btn-primary:hover{transform:translateY(-2px)}.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none}.alt-link{margin-top:16px;font-size:.9rem;color:#64748b}.alt-link button{background:0 0;border:0;color:var(--primary-blue);font-weight:600;cursor:pointer;text-decoration:underline;font-size:.9rem;font-family:inherit}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:44px}.feature-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px}.feature-card i{color:var(--primary-blue);font-size:1.3rem}.feature-card h3{font-size:1rem;font-weight:700;color:#0f172a;margin:12px 0 6px}.feature-card p{font-size:.88rem;color:#64748b;line-height:1.55}.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px 20px;margin-bottom:12px}.faq-item h3{font-size:.98rem;font-weight:700;color:#0f172a;margin-bottom:6px}.faq-item p{font-size:.9rem;color:#64748b}#signer{display:none;margin-top:0;height:calc(100vh - 64px)}#signer.on{display:grid;grid-template-rows:auto 1fr}.toolbar{background:#fff;border-bottom:1px solid var(--border);padding:8px 12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.btn-ghost{border:1px solid var(--border);background:#fff;color:#334155;border-radius:10px;padding:7px 12px;font-size:.84rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px}.btn-ghost:hover{background:#f8fafc;border-color:#cbd5e1}.btn-ghost[disabled]{opacity:.45;cursor:not-allowed}.btn-save{background:var(--gradient-accent);color:#fff;border:0;box-shadow:0 6px 16px rgba(16,185,129,.28)}.tsep{width:1px;height:24px;background:var(--border);margin:0 4px}.workspace{display:grid;grid-template-columns:240px 1fr;min-height:0}.rail{background:#fff;border-right:1px solid var(--border);overflow-y:auto;padding:14px}.rail h5{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:#94a3b8;font-weight:700;margin-bottom:10px}.sig-slot{border:1px dashed #cbd5e1;border-radius:12px;background:#f8fafc;padding:14px;text-align:center;cursor:pointer;transition:all .2s ease}.sig-slot:hover{border-color:var(--primary-blue);background:#f8faff}.sig-slot img{max-width:100%;max-height:64px}.sig-slot .hint{font-size:.78rem;color:#94a3b8}.place-btn{width:100%;margin-top:10px;border:0;border-radius:10px;padding:9px 0;background:var(--gradient-primary);color:#fff;font-weight:600;font-size:.86rem;cursor:pointer}.place-btn[disabled]{opacity:.5;cursor:not-allowed}.add-row{display:flex;gap:6px;margin-top:10px}.add-row button{flex:1}.canvas-area{overflow:auto;background:#e2e8f0;padding:22px 10px 60px}.page-wrap{position:relative;margin:0 auto 22px;background:#fff;box-shadow:0 6px 22px rgba(15,23,42,.14)}.page-wrap canvas{display:block}.overlay{position:absolute;left:0;top:0;transform-origin:top left}.overlay.placing{cursor:copy}.stamp{position:absolute;cursor:move;user-select:none}.stamp img{width:100%;height:100%;display:block;pointer-events:none}.stamp.txt{white-space:pre;display:flex;align-items:center}.stamp.sel{outline:1.5px solid var(--primary-blue);outline-offset:2px}.stamp .grip{position:absolute;right:-6px;bottom:-6px;width:12px;height:12px;background:#fff;border:1.5px solid var(--primary-blue);border-radius:2px;cursor:nwse-resize}.stamp .kill{position:absolute;left:-9px;top:-9px;width:20px;height:20px;border:0;border-radius:50%;background:#dc2626;color:#fff;font-size:11px;line-height:1;cursor:pointer;display:none;align-items:center;justify-content:center}.stamp.sel .kill,.stamp.sel .grip{display:flex}.stamp .grip{display:none}.modal-back{position:fixed;inset:0;background:rgba(15,23,42,.55);backdrop-filter:blur(3px);display:none;align-items:center;justify-content:center;z-index:2000;padding:20px}.modal-back.on{display:flex}.modal{background:#fff;border-radius:18px;width:100%;max-width:560px;padding:26px;box-shadow:0 30px 70px rgba(0,0,0,.3);max-height:92vh;overflow-y:auto}.modal h3{font-size:1.15rem;font-weight:700;color:#0f172a;margin-bottom:6px}.modal p.sub{font-size:.88rem;color:#64748b;margin-bottom:18px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px;flex-wrap:wrap}.seg{display:flex;border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-bottom:16px}.seg button{flex:1;border:0;background:#fff;padding:9px 0;font-size:.85rem;font-weight:600;color:#64748b;cursor:pointer}.seg button.on{background:#eff6ff;color:var(--primary-blue)}.seg button+button{border-left:1px solid var(--border)}#sigPad{border:1px dashed #cbd5e1;border-radius:12px;background:#fcfcfd;touch-action:none;width:100%;display:block;cursor:crosshair}.prow{margin-bottom:14px}.prow label{display:block;font-size:.78rem;font-weight:600;color:#475569;margin-bottom:5px}.prow input[type=text],.prow select{width:100%;border:1px solid var(--border);border-radius:9px;padding:8px 11px;font-size:.9rem;font-family:inherit;color:#0f172a}.ink-row{display:flex;gap:10px;align-items:center;margin-top:10px}.ink{width:26px;height:26px;border-radius:50%;border:2px solid transparent;cursor:pointer}.ink.on{border-color:var(--primary-blue)}#styleGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;max-height:260px;overflow-y:auto;padding:2px}.style-card{border:1.5px solid var(--border);border-radius:10px;background:#fff;padding:10px 8px;cursor:pointer;text-align:center;overflow:hidden;transition:border-color .15s ease,background .15s ease}.style-card:hover{border-color:#bfdbfe;background:#f8faff}.style-card.on{border-color:var(--primary-blue);background:#eff6ff}.style-card .sample{font-size:26px;line-height:1.5;color:#0f172a;white-space:nowrap;overflow:hidden}.style-card .label{font-size:.68rem;color:#94a3b8;margin-top:4px;text-transform:uppercase;letter-spacing:.05em;font-weight:600}#typePreview{border:1px dashed #cbd5e1;border-radius:12px;padding:22px;text-align:center;font-size:2.4rem;color:#0f172a;min-height:90px;overflow:hidden}.saved-sig{display:flex;align-items:center;gap:12px;border:1px solid var(--border);border-radius:12px;padding:10px 12px;margin-bottom:16px;background:#f8fafc;flex-wrap:wrap}.saved-sig[hidden]{display:none}.saved-sig img{height:44px;max-width:160px;object-fit:contain;background:#fff;border:1px solid var(--border);border-radius:8px;padding:4px 8px}.saved-sig .saved-meta{flex:1;min-width:120px;font-size:.8rem;color:#475569;line-height:1.4}.saved-sig .saved-meta b{display:block;color:#0f172a;font-size:.85rem}.saved-sig .saved-btns{display:flex;gap:8px}.remember-row{display:flex;align-items:flex-start;gap:8px;margin-top:14px;font-size:.82rem;color:#475569;line-height:1.45}.remember-row input{margin-top:2px;width:16px;height:16px;flex:none}.hint-box{font-size:.8rem;color:#64748b;background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:10px 12px;line-height:1.5}#toasts{position:fixed;right:18px;bottom:18px;z-index:3000;display:flex;flex-direction:column;gap:10px}.toast{background:#0f172a;color:#fff;padding:11px 16px;border-radius:12px;font-size:.86rem;box-shadow:0 12px 30px rgba(0,0,0,.25);display:flex;align-items:center;gap:9px;max-width:360px}.toast.ok{background:#047857}.toast.err{background:#b91c1c}.toast.warn{background:#b45309}#busy{position:fixed;inset:0;background:rgba(255,255,255,.88);z-index:2500;display:none;align-items:center;justify-content:center;flex-direction:column;gap:14px}#busy.on{display:flex}.spinner{width:42px;height:42px;border:4px solid #dbeafe;border-top-color:var(--primary-blue);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#busyText{font-size:.92rem;font-weight:600;color:#334155}@media (max-width:900px){.workspace{grid-template-columns:1fr}.rail{position:fixed;left:0;top:64px;bottom:0;width:250px;z-index:900;transform:translateX(-100%);transition:transform .25s ease}.rail.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.2)}}.narrow-only{display:none}@media (max-width:900px){.narrow-only{display:inline-flex}}