:root{--bg:#fff;--surface:#f8fafc;--surface-2:#f1f5f9;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-soft:#eff6ff;--border:#e2e8f0;--text:#1e293b;--text-secondary:#475569;--text-muted:#94a3b8;--green:#22c55e;--orange:#f59e42;--red:#ef4444;--font:"Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--radius:10px;--radius-lg:16px;--radius-pill:9999px;--shadow:0 1px 3px #0000000d, 0 1px 2px #0000000a;--shadow-md:0 8px 24px #0f172a14;--transition:.18s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.55}img,svg{max-width:100%;display:block}button,input,select,textarea{font-family:inherit}a{color:var(--primary)}.container{max-width:1120px;margin:0 auto;padding:0 24px}.skip-link{background:var(--primary);color:#fff;z-index:200;border-radius:0 0 8px;padding:10px 16px;position:absolute;top:0;left:-9999px}.skip-link:focus{left:0}:focus-visible{outline-offset:2px;outline:3px solid #2563eb8c}.nav{z-index:100;backdrop-filter:blur(12px);border-bottom:1px solid var(--border);background:#ffffffeb;height:60px;position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;gap:20px;max-width:1120px;height:100%;margin:0 auto;padding:0 24px;display:flex}.nav-logo{color:var(--text);white-space:nowrap;align-items:center;gap:9px;font-size:16px;font-weight:700;text-decoration:none;display:flex}.nav-logo-icon{background:var(--primary);color:#fff;border-radius:7px;justify-content:center;align-items:center;width:30px;height:30px;font-size:13px;font-weight:800;display:flex}.nav-links{flex-wrap:wrap;gap:26px;list-style:none;display:flex}.nav-links a{color:var(--text-secondary);transition:color var(--transition);font-size:14px;font-weight:500;text-decoration:none}.nav-links a:hover{color:var(--text)}.hero{padding:68px 0 56px}.hero-grid{grid-template-columns:1fr 1fr;align-items:center;gap:56px;display:grid}.hero-tag,.section-eyebrow{text-transform:uppercase;letter-spacing:.1em;color:var(--primary);margin-bottom:12px;font-size:12px;font-weight:700}.hero h1{margin-bottom:14px;font-size:2.25rem;font-weight:800;line-height:1.16}.hero-desc{color:var(--text-secondary);margin-bottom:28px;font-size:1.05rem;line-height:1.6}.hero-cta{background:var(--primary);color:#fff;border-radius:var(--radius-pill);cursor:pointer;transition:all var(--transition);border:none;align-items:center;gap:8px;padding:13px 28px;font-size:15px;font-weight:700;text-decoration:none;display:inline-flex;box-shadow:0 6px 20px #2563eb38}.hero-cta:hover{background:var(--primary-hover);transform:translateY(-1px)}.hero-cta-sec{color:var(--text-secondary);margin-left:12px;font-size:14px;font-weight:600;text-decoration:none}.hero-trust{color:var(--text-muted);align-items:center;gap:6px;margin-top:20px;font-size:13px;display:flex}.hero-trust-dot{background:var(--green);border-radius:50%;width:6px;height:6px}.section{padding:64px 0}.section-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section-title{margin-bottom:6px;font-size:1.5rem;font-weight:700}.section-sub{color:var(--text-secondary);margin-bottom:28px;font-size:.95rem}.tools-grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);color:inherit;transition:all var(--transition);flex-direction:column;min-width:0;padding:22px 20px;text-decoration:none;display:flex}.tool-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.tool-card-icon{border-radius:var(--radius);background:var(--primary-soft);justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:12px;font-size:1.2rem;display:flex}.tool-card-name{color:var(--text);overflow-wrap:anywhere;margin-bottom:4px;font-size:1rem;font-weight:600}.tool-card-desc{color:var(--text-secondary);margin-bottom:12px;font-size:.82rem;line-height:1.4}.tool-card-link{color:var(--primary);align-items:center;gap:4px;margin-top:auto;font-size:13px;font-weight:600;display:flex}.tools-more{text-align:center;margin-top:24px}.cat-tabs{background:var(--surface);border-radius:var(--radius-pill);border:1px solid var(--border);gap:4px;width:fit-content;max-width:100%;margin-bottom:24px;padding:4px;display:flex;overflow-x:auto}.cat-tab{border-radius:var(--radius-pill);color:var(--text-secondary);cursor:pointer;transition:all var(--transition);white-space:nowrap;background:0 0;border:none;padding:8px 20px;font-size:14px;font-weight:600}.cat-tab.active,.cat-tab[aria-selected=true]{background:var(--primary);color:#fff}.cat-tab:hover:not(.active):not([aria-selected=true]){color:var(--text)}.cat-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.cat-item{border-radius:var(--radius);color:var(--text);transition:all var(--transition);border:1px solid #0000;align-items:center;gap:10px;min-width:0;padding:12px 16px;font-size:14px;font-weight:500;text-decoration:none;display:flex}.cat-item:hover{background:var(--primary-soft);border-color:var(--border)}.cat-item-icon{background:var(--primary-soft);border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:.9rem;display:flex}.how-steps{grid-template-columns:repeat(3,1fr);gap:28px;margin-top:24px;display:grid}.how-step{text-align:center}.how-step-num{background:var(--primary-soft);width:48px;height:48px;color:var(--primary);border-radius:50%;justify-content:center;align-items:center;margin:0 auto 14px;font-size:1.2rem;font-weight:800;display:flex}.how-step h3{margin-bottom:6px;font-size:1rem;font-weight:600}.how-step p{color:var(--text-secondary);font-size:.88rem}.guides-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.guide-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);color:inherit;transition:all var(--transition);flex-direction:column;min-width:0;padding:20px;text-decoration:none;display:flex}.guide-card:hover{border-color:var(--primary-soft);box-shadow:var(--shadow-md)}.guide-card-tag{text-transform:uppercase;letter-spacing:.06em;color:var(--primary);margin-bottom:8px;font-size:11px;font-weight:700}.guide-card-title{overflow-wrap:anywhere;margin-bottom:6px;font-size:.95rem;font-weight:600;line-height:1.3}.guide-card-time{color:var(--text-muted);margin-top:auto;font-size:12px}.faq-list{max-width:680px}.faq-item{border-bottom:1px solid var(--border)}.faq-item:first-child{border-top:1px solid var(--border)}.faq-q{cursor:pointer;width:100%;color:var(--text);text-align:left;background:0 0;border:none;justify-content:space-between;align-items:center;gap:12px;padding:16px 0;font-size:15px;font-weight:500;display:flex}.faq-q:hover{color:var(--primary)}.faq-chevron{color:var(--text-muted);transition:transform var(--transition);flex-shrink:0;font-size:12px}.faq-item.open .faq-chevron{transform:rotate(180deg)}.faq-a{max-height:0;transition:max-height .3s;overflow:hidden}.faq-item.open .faq-a{max-height:300px;padding-bottom:16px}.faq-a p{color:var(--text-secondary);font-size:.92rem;line-height:1.7}.footer{background:var(--primary);color:#fff;margin-top:40px;padding:56px 0 28px}.footer-grid{grid-template-columns:repeat(4,1fr);gap:36px;margin-bottom:36px;display:grid}.footer-col h4{text-transform:uppercase;letter-spacing:.08em;color:#fff9;margin-bottom:14px;font-size:12px;font-weight:700}.footer-col ul{list-style:none}.footer-col li{margin-bottom:8px}.footer-col a{color:#ffffffd9;transition:color var(--transition);font-size:14px;text-decoration:none}.footer-col a:hover{color:#fff}.footer-bottom{color:#ffffff8c;border-top:1px solid #ffffff26;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:20px;font-size:13px;display:flex}.workspace-shell{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin:28px 0;overflow:hidden}.workspace-bar{border-bottom:1px solid var(--border);background:#fff;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;display:flex}.workspace-title{align-items:center;gap:8px;font-size:15px;font-weight:700;display:flex}.workspace-privacy{color:var(--text-muted);align-items:center;gap:6px;font-size:12px;display:flex}.workspace-body{padding:28px 24px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;transition:all var(--transition);cursor:pointer;background:#fff;margin-bottom:18px;padding:32px 24px}.dropzone:hover,.dropzone.dragging{border-color:var(--primary);background:var(--primary-soft)}.dropzone-icon{color:var(--primary);margin-bottom:8px;font-size:2rem}.dropzone-text{margin-bottom:4px;font-size:14px;font-weight:600}.dropzone-hint{color:var(--text-muted);font-size:12px}.file-list{flex-direction:column;gap:8px;margin-bottom:16px;list-style:none;display:flex}.file-chip{border:1px solid var(--border);border-radius:var(--radius);background:#fff;justify-content:space-between;align-items:center;gap:12px;min-width:0;padding:10px 14px;display:flex}.file-chip-info{flex-direction:column;min-width:0;display:flex}.file-chip-info strong{overflow-wrap:anywhere;font-size:13px}.file-chip-info small{color:var(--text-muted);font-size:12px}.icon-button{border:1px solid var(--border);width:32px;height:32px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition);background:#fff;border-radius:7px;flex-shrink:0;font-size:15px}.icon-button:hover:not(:disabled){background:var(--primary-soft);color:var(--primary);border-color:var(--primary)}.icon-button:disabled{opacity:.4;cursor:default}.options-grid{grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:18px;display:grid}.option-field{flex-direction:column;gap:6px;min-width:0;display:flex}.option-field label,.option-check label{color:var(--text);font-size:13px;font-weight:600}.option-field input,.option-field select,.option-field textarea{border:1px solid var(--border);border-radius:var(--radius);width:100%;min-height:42px;color:var(--text);background:#fff;padding:9px 12px;font-size:14px}.option-field textarea{resize:vertical}.option-field input[type=range]{min-height:32px;accent-color:var(--primary);padding:0}.option-help{color:var(--text-muted);font-size:12px}.option-check{border:1px solid var(--border);border-radius:var(--radius);background:#fff;align-items:center;gap:8px;min-height:42px;padding:10px 12px;display:flex}.option-check input{width:18px;height:18px;accent-color:var(--primary)}.workspace-actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.workspace-btn,.download-button{background:var(--primary);color:#fff;border-radius:var(--radius);cursor:pointer;min-height:46px;transition:all var(--transition);border:none;justify-content:center;align-items:center;gap:8px;padding:0 20px;font-size:14px;font-weight:700;display:inline-flex}.workspace-btn:hover:not(:disabled),.download-button:hover{background:var(--primary-hover)}.workspace-btn:disabled{opacity:.6;cursor:wait}.reset-button{min-height:46px;color:var(--text-secondary);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all var(--transition);background:#fff;padding:0 18px;font-size:14px;font-weight:600}.reset-button:hover{background:var(--surface);color:var(--text)}.workspace-status{color:var(--text-secondary);min-height:20px;margin-top:14px;font-size:13px}.workspace-status[data-tone=error]{color:var(--red)}.workspace-status[data-tone=success]{color:var(--green)}.progress-track{background:var(--surface-2);border-radius:var(--radius-pill);height:6px;margin-top:12px;overflow:hidden}.progress-bar{background:var(--primary);border-radius:var(--radius-pill);width:0;height:100%;transition:width .2s}.progress-text{color:var(--text-muted);margin-top:8px;font-size:12px}.results-panel{border-top:1px solid var(--border);margin-top:20px;padding-top:20px}.summary-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-bottom:16px;display:grid}.summary-row{border:1px solid var(--border);border-radius:var(--radius);background:#fff;justify-content:space-between;gap:8px;padding:12px 14px;font-size:13px;display:flex}.summary-row span{color:var(--text-secondary)}.summary-row strong{color:var(--text);overflow-wrap:anywhere;text-align:right}.downloads{flex-wrap:wrap;gap:10px;margin-bottom:16px;display:flex}.preview-frame{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);min-height:220px;max-height:560px;overflow:auto}.preview-frame object,.preview-frame img{background:#fff;border:0;width:100%;min-height:220px}.preview-note{color:var(--text-secondary);padding:24px;font-size:14px}.signature-block{margin-bottom:18px}.signature-block label{margin-bottom:8px;font-size:13px;font-weight:600;display:block}.signature-canvas{border:1px solid var(--border);border-radius:var(--radius);touch-action:none;cursor:crosshair;background:#fff;width:100%;height:220px}.signature-actions{justify-content:flex-end;margin-top:8px;display:flex}.page-order-list{flex-direction:column;gap:8px;margin-bottom:18px;display:flex}.page-order-row{border:1px solid var(--border);border-radius:var(--radius);background:#fff;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;font-size:13px;font-weight:600;display:flex}.page-order-controls{gap:6px;display:flex}.breadcrumbs{color:var(--text-muted);padding:18px 0 0;font-size:13px}.breadcrumbs ol{flex-wrap:wrap;gap:8px;list-style:none;display:flex}.breadcrumbs li{gap:8px;display:flex}.breadcrumbs li+li:before{content:"/";color:var(--text-muted)}.breadcrumbs a{color:var(--text-secondary);text-decoration:none}.breadcrumbs a:hover{color:var(--primary)}.tool-hero{max-width:820px;padding:32px 0 8px}.tool-hero h1{margin:10px 0 12px;font-size:2rem;font-weight:800;line-height:1.2}.tool-hero .hero-desc{margin-bottom:0;font-size:1rem}.content-section{border-top:1px solid var(--border);padding:36px 0}.content-section h2{margin-bottom:14px;font-size:1.35rem;font-weight:700}.content-section p{color:var(--text-secondary);max-width:760px;margin-bottom:12px}.step-list,.feature-list,.example-list,.guide-body-list{gap:10px;max-width:760px;list-style:none;display:grid}.step-list li,.feature-list li,.guide-body-list li{color:var(--text-secondary);padding-left:26px;position:relative}.step-list li:before,.guide-body-list li:before{content:"•";color:var(--primary);font-weight:800;position:absolute;left:8px}.feature-list li:before{content:"✓";color:var(--green);font-weight:800;position:absolute;left:2px}.example-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px}.example-card h3{margin-bottom:6px;font-size:.95rem;font-weight:700}.example-card p{margin-bottom:0;font-size:.9rem}.limitation-note{color:var(--text-muted);max-width:760px;margin-top:14px;font-size:13px}.article-page{max-width:760px}.article-page h1{margin-bottom:10px;font-size:2rem;font-weight:800}.article-page h2{margin:28px 0 12px;font-size:1.3rem;font-weight:700}.article-page p,.article-page li{color:var(--text-secondary);margin-bottom:12px}.article-page ul,.article-page ol{margin-bottom:14px;padding-left:22px}@media (width<=900px){.hero-grid{grid-template-columns:1fr;gap:36px}.hero h1{font-size:1.7rem}.tools-grid,.guides-grid{grid-template-columns:repeat(2,1fr)}.cat-grid{grid-template-columns:1fr}.how-steps{grid-template-columns:1fr;gap:18px}.footer-grid{grid-template-columns:repeat(2,1fr)}.options-grid{grid-template-columns:1fr}}@media (width<=560px){.hero{padding:44px 0 36px}.hero h1{font-size:1.4rem}.tools-grid,.guides-grid,.footer-grid{grid-template-columns:1fr}.nav-links{display:none}.workspace-body{padding:20px 16px}.cat-tabs{width:100%}.tool-hero h1,.article-page h1{font-size:1.6rem}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}