:root { 
            --bg-black: #09090b; 
            --bg-black-surface: #121215; 
            --bg-white: #ffffff; 
            --bg-grey: #f8fafc; 
            --bg-grey-card: #f1f5f9; 
            --text-on-white-main: #0f172a; 
            --text-on-white-muted: #475569; 
            --text-on-black-main: #ffffff; 
            --text-on-black-muted: #94a3b8; 
            --purple-50: #f5f3ff; 
            --purple-100: #ede9fe; 
            --purple-200: #ddd6fe; 
            --purple-500: #8b5cf6; 
            --purple-600: #7c3aed; 
            --purple-700: #6d28d9; 
            --purple-glow: rgba(124, 58, 237, 0.2); 
            --border-light: #e2e8f0; 
            --border-dark: #27272a; 
            --success: #10b981; 
            --success-bg: #ecfdf5; 
            --danger: #ef4444; 
            --radius-sm: 6px; 
            --radius-md: 10px; 
            --radius-lg: 16px; 
            --radius-full: 9999px; 
            --shadow-card: 0 12px 32px -4px rgba(0, 0, 0, 0.08); 
            --transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1); 
        }
        * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body { background-color: var(--bg-white); color: var(--text-on-white-main); line-height: 1.6; overflow-x: hidden; }
        .container { width: 100%; max-width: 1340px; margin: 0 auto; padding: 0 20px; }
        .page-view { display: none; }
        .page-view.active { display: block; animation: fadeIn 0.4s ease; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        .site-header { background-color: var(--bg-black); border-bottom: 1px solid var(--border-dark); position: sticky; top: 0; z-index: 1000; }
        .header-nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
        .brand-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text-on-black-main); font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em; cursor: pointer; flex-shrink: 0; }
        .brand-logo .logo-icon { width: 32px; height: 32px; background: linear-gradient(135deg, var(--purple-600), var(--purple-700)); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #ffffff; box-shadow: 0 2px 8px var(--purple-glow); flex-shrink: 0; }
        .brand-logo span span { color: var(--purple-500); }
        .nav-menu { display: flex; align-items: center; gap: 28px; list-style: none; }
        .nav-menu > li > a, .nav-menu > li > span { color: var(--text-on-black-muted); text-decoration: none; font-size: 0.92rem; font-weight: 500; transition: var(--transition); cursor: pointer; display: flex; align-items: center; gap: 6px; }
        .nav-menu > li:hover > a, .nav-menu > li:hover > span { color: var(--purple-500); }
        .dropdown-toggle { display: flex; align-items: center; gap: 6px; cursor: pointer; padding: 8px 12px; border-radius: var(--radius-sm); transition: var(--transition); min-height: 44px; }
        .dropdown-toggle:hover, .dropdown-toggle:focus { color: var(--purple-500); outline: none; background: rgba(124, 58, 237, 0.1); }
        .dropdown-chevron { transition: transform 0.2s ease-in-out; }
        .nav-item-dropdown:hover .dropdown-chevron, .nav-item-dropdown.active .dropdown-chevron { transform: rotate(180deg); }
        .nav-item-dropdown { position: relative; }
        .dropdown-menu { position: absolute; top: 100%; left: 0; background: var(--bg-black-surface); border: 1px solid var(--border-dark); border-radius: var(--radius-md); padding: 12px; min-width: 400px; opacity: 0; visibility: hidden; transform: translateY(10px); transition: var(--transition); box-shadow: 0 12px 32px -4px rgba(0,0,0,0.3); margin-top: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; z-index: 10; }
        .nav-item-dropdown:hover .dropdown-menu, .nav-item-dropdown.active .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
        .dropdown-menu a { display: block; padding: 8px 12px; color: var(--text-on-black-muted); text-decoration: none; font-size: 0.88rem; border-radius: var(--radius-sm); transition: background 0.2s; cursor: pointer; }
        .dropdown-menu a:hover { background: rgba(124, 58, 237, 0.1); color: var(--purple-500); }
        .btn-purple-primary { background-color: var(--purple-600); color: #ffffff; font-weight: 600; font-size: 0.9rem; padding: 10px 20px; border-radius: var(--radius-sm); text-decoration: none; border: 1px solid var(--purple-500); cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; min-height: 44px; }
        .btn-purple-primary:hover { background-color: var(--purple-700); box-shadow: 0 4px 14px var(--purple-glow); transform: translateY(-1px); }
        .btn-purple-primary:disabled { opacity: 0.7; cursor: not-allowed; }
        .header-cta { order: 3; }
        .hamburger-btn { display: none; background: none; border: none; color: var(--text-on-black-main); cursor: pointer; padding: 8px; order: 4; }
        .hero-section { background-color: var(--bg-white); padding: 64px 0 54px; text-align: center; }
        .hero-pill-badge { display: inline-flex; align-items: center; gap: 8px; background-color: var(--purple-50); border: 1px solid var(--purple-200); color: var(--purple-700); font-size: 0.85rem; font-weight: 600; padding: 6px 14px; border-radius: var(--radius-full); margin-bottom: 20px; }
        .hero-heading { font-size: clamp(2.2rem, 5vw, 3.2rem); font-weight: 800; color: var(--text-on-white-main); letter-spacing: -0.035em; line-height: 1.18; max-width: 860px; margin: 0 auto 16px; }
        .hero-heading span { color: var(--purple-600); }
        .hero-subheading { font-size: clamp(1rem, 2vw, 1.15rem); color: var(--text-on-white-muted); max-width: 640px; margin: 0 auto 30px; padding: 0 10px; }
        .metrics-section { background-color: var(--bg-grey); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); padding: 34px 0; }
        .metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
        .metric-stat-number { font-size: 1.85rem; font-weight: 800; color: var(--purple-700); margin-bottom: 2px; }
        .metric-stat-label { font-size: 0.85rem; color: var(--text-on-white-muted); font-weight: 500; }
        .showcase-block { padding: 80px 0; border-bottom: 1px solid var(--border-light); }
        .showcase-block.surface-white { background-color: var(--bg-white); }
        .showcase-block.surface-grey { background-color: var(--bg-grey); }
        .showcase-two-col { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 54px; align-items: center; }
        .showcase-two-col.reversed { grid-template-columns: 0.9fr 1.1fr; }
        .vector-illustration-card { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-light); box-shadow: var(--shadow-card); background: #ffffff; padding: 24px; transition: var(--transition); }
        .section-eyebrow { font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--purple-600); margin-bottom: 8px; display: block; }
        .section-title { font-size: clamp(1.8rem, 4vw, 2.15rem); font-weight: 800; color: var(--text-on-white-main); margin-bottom: 14px; }
        .section-description { font-size: 1rem; color: var(--text-on-white-muted); margin-bottom: 20px; line-height: 1.65; }
        .section-header-center { text-align: center; max-width: 680px; margin: 0 auto 40px; }
        .feature-bullets { list-style: none; display: flex; flex-direction: column; gap: 12px; }
        .feature-bullets li { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--text-on-white-main); font-size: 0.92rem; }
        .bullet-check-badge { width: 22px; height: 22px; background-color: var(--purple-50); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--purple-600); font-size: 0.75rem; flex-shrink: 0; border: 1px solid var(--purple-200); }
        .webp-comparison-wrapper { border-radius: 12px; overflow: hidden; border: 1px solid var(--border-light); box-shadow: 0 8px 24px rgba(0,0,0,0.06); position: relative; }
        .webp-comparison-wrapper img { width: 100%; height: auto; display: block; }
        .comparison-label { position: absolute; top: 16px; padding: 6px 14px; font-size: 0.85rem; font-weight: 700; color: #ffffff; border-radius: var(--radius-full); backdrop-filter: blur(4px); }
        .label-left { left: 16px; background: rgba(15, 23, 42, 0.7); }
        .label-right { right: 16px; background: rgba(124, 58, 237, 0.8); }
        .privacy-shield-container { background: linear-gradient(180deg, #ffffff, var(--bg-grey)); border-radius: 14px; padding: 28px; text-align: center; }
        .shield-icon-big { width: 72px; height: 72px; background: var(--purple-50); border: 2px solid var(--purple-200); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; color: var(--purple-600); box-shadow: 0 4px 16px var(--purple-glow); }
        .privacy-status-pill { display: inline-flex; align-items: center; gap: 6px; background: var(--success-bg); color: var(--success); border: 1px solid #a7f3d0; font-size: 0.8rem; font-weight: 700; padding: 5px 12px; border-radius: var(--radius-full); margin-bottom: 14px; }
        .browser-support-row { display: flex; justify-content: center; gap: 16px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border-light); flex-wrap: wrap; }
        .browser-tag { font-size: 0.8rem; font-weight: 600; color: var(--text-on-white-muted); display: flex; align-items: center; gap: 4px; }
        .tools-directory-section { padding: 70px 0; background-color: var(--bg-white); border-bottom: 1px solid var(--border-light); }
        .tools-cards-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .tool-action-card { background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 20px; cursor: pointer; transition: var(--transition); text-align: left; text-decoration: none; color: inherit; display: block; }
        .tool-action-card:hover { border-color: var(--purple-600); box-shadow: 0 8px 24px var(--purple-glow); transform: translateY(-2px); }
        .tool-card-icon { width: 40px; height: 40px; border-radius: 8px; background: var(--purple-50); border: 1px solid var(--purple-200); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; margin-bottom: 12px; color: var(--purple-700); }
        .tool-card-title { font-size: 1rem; font-weight: 700; color: var(--text-on-white-main); margin-bottom: 4px; }
        .tool-card-desc { font-size: 0.8rem; color: var(--text-on-white-muted); line-height: 1.4; }
        .features-section { padding: 80px 0; background-color: var(--bg-grey); border-bottom: 1px solid var(--border-light); }
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-box { background-color: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 28px; transition: var(--transition); }
        .feature-box:hover { border-color: var(--purple-500); box-shadow: var(--shadow-card); transform: translateY(-3px); }
        .feature-icon-wrapper { width: 44px; height: 44px; border-radius: 10px; background-color: var(--purple-50); border: 1px solid var(--purple-200); color: var(--purple-600); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
        .feature-box h3 { font-size: 1.12rem; font-weight: 700; color: var(--text-on-white-main); margin-bottom: 8px; }
        .feature-box p { font-size: 0.9rem; color: var(--text-on-white-muted); line-height: 1.55; }
        .converter-app-card { max-width: 920px; margin: 0 auto; background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); padding: 28px; text-align: left; }
        .converter-card-header { text-align: center; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border-light); }
        .converter-card-title { font-size: 1.25rem; font-weight: 800; color: var(--text-on-white-main); margin-bottom: 4px; }
        .converter-card-subtitle { font-size: 0.88rem; color: var(--text-on-white-muted); }
        .converter-controls-row { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border-light); margin-bottom: 22px; flex-wrap: wrap; gap: 16px; }
        .control-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
        .control-label { font-size: 0.85rem; font-weight: 600; color: var(--text-on-white-muted); }
        .format-btn { background-color: var(--bg-grey); border: 1px solid var(--border-light); padding: 6px 14px; border-radius: var(--radius-full); font-size: 0.85rem; font-weight: 600; color: var(--text-on-white-muted); cursor: pointer; transition: var(--transition); min-height: 36px; }
        .format-btn.active, .format-btn:hover { background-color: var(--purple-50); border-color: var(--purple-600); color: var(--purple-700); }
        .quality-slider-wrapper { display: flex; align-items: center; gap: 10px; background: var(--bg-grey); padding: 6px 14px; border-radius: 8px; border: 1px solid var(--border-light); }
        .quality-slider-wrapper input[type="range"] { width: 100px; accent-color: var(--purple-600); cursor: pointer; max-width: 100%; }
        .quality-readout { font-size: 0.85rem; font-weight: 700; color: var(--purple-700); min-width: 38px; }
        .dim-input { width: 80px; padding: 6px 10px; border: 1px solid var(--border-light); border-radius: var(--radius-sm); background: var(--bg-grey); font-family: inherit; font-size: 0.9rem; color: var(--text-on-white-main); }
        .dim-input:focus { outline: none; border-color: var(--purple-600); }
        .home-format-display { display: flex; align-items: center; gap: 12px; width: 100%; justify-content: center; flex-wrap: wrap; }
        .home-format-badge { background-color: var(--bg-grey); border: 1px solid var(--border-light); padding: 8px 18px; border-radius: var(--radius-full); font-size: 0.95rem; font-weight: 700; color: var(--text-on-white-muted); white-space: nowrap; }
        .home-format-badge.active { background-color: var(--purple-50); border-color: var(--purple-600); color: var(--purple-700); }
        .home-format-arrow { color: var(--purple-600); flex-shrink: 0; }
        .dropzone-box { border: 2px dashed #cbd5e1; background-color: var(--bg-grey); border-radius: var(--radius-md); padding: 44px 20px; text-align: center; cursor: pointer; transition: var(--transition); }
        .dropzone-box:hover, .dropzone-box.dragover { border-color: var(--purple-600); background-color: var(--purple-50); }
        .dropzone-icon { width: 52px; height: 52px; background: #ffffff; border: 1px solid var(--border-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; color: var(--purple-600); box-shadow: 0 2px 6px rgba(0,0,0,0.04); }
        .btn-browse-trigger { display: inline-block; margin-top: 14px; background-color: #ffffff; border: 1px solid var(--border-light); color: var(--text-on-white-main); font-size: 0.85rem; font-weight: 600; padding: 7px 18px; border-radius: 6px; box-shadow: 0 1px 3px rgba(0,0,0,0.04); transition: var(--transition); }
        .tool-info-box { margin-top: 20px; padding: 15px; background: var(--success-bg); border: 1px solid #a7f3d0; border-radius: 8px; text-align: center; }
        .tool-info-box p { font-size: 0.9rem; color: var(--success); font-weight: 600; margin-bottom: 8px; }
        .tool-info-box span { font-size: 0.85rem; color: var(--text-on-white-muted); }
        .queue-box { margin-top: 20px; display: none; }
        .queue-header-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; flex-wrap: wrap; gap: 8px; }
        .queue-header-title { font-size: 0.9rem; font-weight: 700; color: var(--text-on-white-main); }
        .btn-clear-queue { background: none; border: none; color: var(--danger); font-size: 0.82rem; font-weight: 600; cursor: pointer; min-height: 44px; }
        .queue-entries-list { display: flex; flex-direction: column; gap: 8px; }
        .queue-entry { display: flex; align-items: center; justify-content: space-between; background: var(--bg-grey); border: 1px solid var(--border-light); border-radius: 8px; padding: 10px 14px; margin-bottom: 8px; gap: 10px; }
        .entry-left { display: flex; align-items: center; gap: 12px; min-width: 0; flex: 1; }
        .entry-thumb { width: 42px; height: 42px; border-radius: 6px; object-fit: cover; border: 1px solid var(--border-light); background: #ffffff; flex-shrink: 0; }
        .entry-info { min-width: 0; flex: 1; }
        .entry-name { font-size: 0.88rem; font-weight: 600; color: var(--text-on-white-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }
        .entry-size { font-size: 0.78rem; color: var(--text-on-white-muted); }
        .entry-right { display: flex; align-items: center; gap: 6px; flex-shrink: 0; flex-wrap: wrap; justify-content: flex-end; }
        .badge-status { font-size: 0.75rem; font-weight: 600; padding: 3px 8px; border-radius: 4px; background: var(--bg-grey-card); color: var(--text-on-white-muted); white-space: nowrap; }
        .badge-status.done { background: var(--success-bg); color: var(--success); }
        .badge-status.failed { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
        .btn-download-single { background-color: var(--success); color: #ffffff; padding: 5px 10px; border-radius: 6px; font-size: 0.78rem; font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; cursor: pointer; }
        .btn-download-single:hover { background-color: #059669; }
        .btn-remove-entry, .btn-reorder { background: none; border: none; color: #94a3b8; cursor: pointer; padding: 8px; font-size: 0.9rem; min-width: 36px; min-height: 36px; display: flex; align-items: center; justify-content: center; }
        .btn-remove-entry:hover { color: var(--danger); }
        .queue-actions-grid { display: flex; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
        .btn-queue-cta { flex: 1; min-width: 140px; padding: 13px 20px; border-radius: 8px; font-size: 0.92rem; font-weight: 700; text-align: center; border: none; cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; }
        .btn-start-conversion { background-color: var(--purple-600); color: #ffffff; }
        .btn-start-conversion:hover { background-color: var(--purple-700); box-shadow: 0 4px 12px var(--purple-glow); }
        .btn-download-all { background-color: var(--success); color: #ffffff; display: none; }
        .btn-download-all:hover { background-color: #059669; }
        .btn-download-archive { background-color: var(--bg-black); color: #ffffff; display: none; }
        .btn-download-archive:hover { background-color: #27272a; }
        .seo-content-wrapper { max-width: 1140px; margin: 0 auto; padding: 60px 20px; }
        .seo-content-wrapper h2 { font-size: clamp(1.8rem, 4vw, 2.2rem); font-weight: 800; color: var(--text-on-white-main); margin-bottom: 20px; text-align: center; }
        .seo-content-wrapper h3 { font-size: 1.3rem; font-weight: 700; color: var(--text-on-white-main); margin: 24px 0 12px; }
        .seo-content-wrapper p { font-size: 1.05rem; color: var(--text-on-white-muted); line-height: 1.75; margin-bottom: 16px; }
        .seo-content-wrapper ul, .seo-content-wrapper ol { margin-left: 20px; margin-bottom: 16px; color: var(--text-on-white-muted); }
        .seo-content-wrapper li { margin-bottom: 8px; }
        .info-grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin: 32px 0; }
        .info-card { background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 28px; box-shadow: var(--shadow-card); transition: var(--transition); }
        .info-card:hover { border-color: var(--purple-500); transform: translateY(-3px); }
        .info-card-icon { width: 48px; height: 48px; background: var(--purple-50); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--purple-600); margin-bottom: 16px; font-size: 1.5rem; border: 1px solid var(--purple-200); }
        .info-card h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--text-on-white-main); }
        .info-card p { font-size: 0.95rem; line-height: 1.6; margin-bottom: 0; color: var(--text-on-white-muted); }
        .accordion-container { margin: 32px 0; }
        .accordion-item { border: 1px solid var(--border-light); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
        .accordion-item:hover { border-color: var(--purple-200); }
        .accordion-header { width: 100%; background: var(--bg-white); padding: 18px 20px; text-align: left; font-weight: 700; font-size: 1.05rem; color: var(--text-on-white-main); border: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: var(--transition); }
        .accordion-header:hover { background: var(--bg-grey); }
        .accordion-body { padding: 0 20px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; background: var(--bg-white); }
        .accordion-body.open { padding: 0 20px 20px; max-height: 1000px; }
        .accordion-chevron { transition: transform 0.3s ease; color: var(--purple-600); }
        .accordion-item.active .accordion-chevron { transform: rotate(180deg); }
        .highlight-box { background: var(--purple-50); border-left: 4px solid var(--purple-600); padding: 20px 24px; border-radius: 0 8px 8px 0; margin: 24px 0; }
        .highlight-box p { color: var(--purple-700); font-weight: 500; margin: 0; }
        .comparison-table-wrapper { overflow-x: auto; margin: 32px 0; border-radius: var(--radius-md); border: 1px solid var(--border-light); }
        .comparison-table { width: 100%; border-collapse: collapse; min-width: 600px; background: var(--bg-white); }
        .comparison-table th, .comparison-table td { border: 1px solid var(--border-light); padding: 14px 16px; text-align: left; font-size: 0.95rem; }
        .comparison-table th { background: var(--bg-black); color: var(--text-on-black-main); font-weight: 700; }
        .comparison-table tr:nth-child(even) { background: var(--bg-grey); }
        .use-case-card { display: flex; align-items: flex-start; gap: 16px; padding: 20px; background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); margin-bottom: 16px; box-shadow: 0 4px 6px rgba(0,0,0,0.02); }
        .use-case-icon { width: 40px; height: 40px; background: var(--success-bg); color: var(--success); border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1.2rem; border: 1px solid #a7f3d0; }
        .use-case-content h4 { font-size: 1.05rem; font-weight: 700; color: var(--text-on-white-main); margin-bottom: 4px; }
        .use-case-content p { font-size: 0.92rem; color: var(--text-on-white-muted); margin: 0; line-height: 1.5; }
        .internal-link-box { background: var(--bg-grey); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 24px; margin-top: 40px; }
        .internal-link-box h3 { margin-bottom: 16px; color: var(--text-on-white-main); font-size: 1.2rem; font-weight: 700; }
        .internal-link-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
        .internal-link-item { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: var(--bg-white); border: 1px solid var(--border-light); border-radius: 8px; text-decoration: none; color: var(--text-on-white-main); font-weight: 600; transition: var(--transition); cursor: pointer; }
        .internal-link-item:hover { border-color: var(--purple-600); color: var(--purple-600); transform: translateX(4px); }
        .featured-blog-card { display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 40px; transition: var(--transition); cursor: pointer; text-decoration: none; color: inherit; }
        .featured-blog-card:hover { box-shadow: var(--shadow-card); border-color: var(--purple-500); }
        .featured-blog-img { width: 100%; height: 100%; min-height: 320px; object-fit: cover; background: var(--bg-grey); }
        .featured-blog-content { padding: 40px; display: flex; flex-direction: column; justify-content: center; }
        .featured-tag { font-size: 0.75rem; font-weight: 700; color: var(--purple-600); text-transform: uppercase; margin-bottom: 12px; }
        .featured-title { font-size: 1.8rem; font-weight: 800; color: var(--text-on-white-main); margin-bottom: 12px; line-height: 1.3; }
        .featured-excerpt { font-size: 1rem; color: var(--text-on-white-muted); margin-bottom: 20px; }
        .blog-cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .blog-card { background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden; cursor: pointer; transition: var(--transition); display: flex; flex-direction: column; text-decoration: none; color: inherit; }
        .blog-card:hover { border-color: var(--purple-600); box-shadow: 0 8px 24px var(--purple-glow); transform: translateY(-3px); }
        .blog-card-img { width: 100%; height: 180px; object-fit: cover; background: var(--bg-grey); }
        .blog-card-content { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .article-container { max-width: 1240px; width: 100%; margin: 0 auto; padding: 64px 20px; box-sizing: border-box; }
        .article-hero { width: 100%; height: 360px; object-fit: cover; border-radius: var(--radius-lg); margin-bottom: 32px; border: 1px solid var(--border-light); }
        .article-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; font-size: 0.88rem; color: var(--text-on-white-muted); flex-wrap: wrap; }
        .article-author { font-weight: 700; color: var(--text-on-white-main); }
        .article-body h2 { font-size: 1.8rem; font-weight: 700; color: var(--text-on-white-main); margin: 32px 0 16px; }
        .article-body h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-on-white-main); margin-top: 24px; margin-bottom: 8px; }
        .article-body p { font-size: 1.05rem; color: var(--text-on-white-muted); margin-bottom: 20px; line-height: 1.75; }
        .article-body blockquote { border-left: 4px solid var(--purple-600); background: var(--purple-50); padding: 16px 24px; border-radius: 0 var(--radius-md) var(--radius-md) 0; margin: 24px 0; font-style: italic; color: var(--purple-700); }
        .btn-back { display: inline-flex; align-items: center; gap: 6px; color: var(--purple-600); font-weight: 600; text-decoration: none; margin-bottom: 24px; cursor: pointer; min-height: 44px; }
        .about-grid-section { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin: 48px 0; }
        .about-grid-section.reverse .about-text-col { order: 2; }
        .about-grid-section.reverse .about-img-col { order: 1; }
        .about-text-col h2 { margin-top: 0; }
        .about-img-col { display: flex; justify-content: center; }
        .about-section-image { width: 100%; max-width: 100%; height: auto; border-radius: var(--radius-md); border: 1px solid var(--border-light); box-shadow: var(--shadow-card); display: block; }
        .contact-wrapper { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
        .contact-info-card { background: var(--bg-black); color: var(--text-on-black-muted); padding: 40px; border-radius: var(--radius-lg); border: 1px solid var(--border-dark); position: relative; overflow: hidden; height: 100%; box-sizing: border-box; }
        .contact-info-card h3 { color: var(--text-on-black-main); font-size: 1.5rem; margin-bottom: 12px; position: relative; }
        .contact-info-item { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 24px; position: relative; }
        .contact-info-icon { width: 40px; height: 40px; background: rgba(124, 58, 237, 0.2); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--purple-500); flex-shrink: 0; }
        .contact-info-text h4 { color: var(--text-on-black-main); font-size: 1rem; margin-bottom: 4px; }
        .contact-info-text a { color: var(--text-on-black-muted); text-decoration: none; font-size: 0.92rem; transition: var(--transition); word-break: break-all; }
        .contact-info-text a:hover { color: var(--purple-500); }
        .contact-form-card { background: var(--bg-white); padding: 40px; border-radius: var(--radius-lg); border: 1px solid var(--border-light); box-shadow: var(--shadow-card); }
        .form-group { margin-bottom: 24px; }
        .form-label { display: block; font-weight: 600; margin-bottom: 8px; color: var(--text-on-white-main); font-size: 0.9rem; }
        .form-input, .form-textarea { width: 100%; padding: 14px 18px; border: 1px solid var(--border-light); border-radius: var(--radius-md); background: var(--bg-grey); font-family: inherit; font-size: 1rem; transition: var(--transition); color: var(--text-on-white-main); }
        .form-input:focus, .form-textarea:focus { outline: none; border-color: var(--purple-600); box-shadow: 0 0 0 4px var(--purple-glow); background: var(--bg-white); }
        .form-textarea { resize: vertical; min-height: 140px; }
        .toast { position: fixed; bottom: 20px; right: 20px; background: var(--bg-black); color: var(--text-on-black-main); padding: 16px 24px; border-radius: var(--radius-md); box-shadow: var(--shadow-card); border-left: 4px solid var(--purple-600); z-index: 2000; display: flex; align-items: center; gap: 12px; transform: translateY(100px); opacity: 0; transition: all 0.3s ease; max-width: calc(100vw - 40px); }
        .toast.show { transform: translateY(0); opacity: 1; }
        .toast.success { border-left-color: var(--success); }
        .toast.error { border-left-color: var(--danger); }
        .site-footer { background-color: var(--bg-black); border-top: 1px solid var(--border-dark); color: var(--text-on-black-muted); padding: 60px 0 30px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
        .footer-brand-column p { font-size: 0.9rem; line-height: 1.6; margin-top: 14px; max-width: 320px; }
        .footer-column-heading { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-on-black-main); margin-bottom: 16px; }
        .footer-nav-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-nav-list a { color: var(--text-on-black-muted); text-decoration: none; font-size: 0.88rem; transition: var(--transition); cursor: pointer; }
        .footer-nav-list a:hover { color: var(--purple-500); }
        .footer-bottom-bar { padding-top: 24px; border-top: 1px solid var(--border-dark); display: flex; align-items: center; justify-content: space-between; font-size: 0.82rem; flex-wrap: wrap; gap: 12px; }
        .metrics-note { text-align: center; font-size: 0.78rem; color: var(--text-on-white-muted); margin-top: 14px; }
        .breadcrumbs { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-on-white-muted); margin-bottom: 18px; flex-wrap: wrap; }
        .breadcrumbs a { color: var(--purple-600); text-decoration: none; font-weight: 600; }
        .breadcrumbs a:hover { text-decoration: underline; }
        .cookie-banner { position: fixed; bottom: 16px; left: 16px; right: 16px; max-width: 600px; margin: 0 auto; background: var(--bg-black); color: var(--text-on-black-muted); border: 1px solid var(--border-dark); border-radius: 12px; padding: 16px 20px; z-index: 3000; box-shadow: var(--shadow-card); display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
        .cookie-banner[hidden] { display: none; }
        .cookie-banner p { font-size: 0.85rem; margin: 0; flex: 1; min-width: 220px; }
        .cookie-banner a { color: var(--purple-500); }
        .cookie-banner .cookie-actions { display: flex; gap: 8px; align-items: center; }
        .noscript-bar { background: #fef3c7; border-bottom: 1px solid #fde68a; padding: 12px 0; font-size: 0.9rem; color: #92400e; }
        .noscript-bar a { color: #92400e; font-weight: 600; }
        @media (max-width: 1024px) { .tools-cards-grid { grid-template-columns: repeat(2, 1fr); } .dropdown-menu { min-width: 300px; } }
        @media (max-width: 900px) { .blog-cards-grid { grid-template-columns: repeat(2, 1fr); } .features-grid { grid-template-columns: repeat(2, 1fr); } .featured-blog-card { grid-template-columns: 1fr; } .contact-wrapper { grid-template-columns: 1fr; } }
        @media (max-width: 840px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 768px) { .showcase-two-col, .showcase-two-col.reversed { grid-template-columns: 1fr; gap: 32px; } .metrics-grid { grid-template-columns: 1fr 1fr; } .converter-controls-row { flex-direction: column; align-items: stretch; gap: 12px; } .hamburger-btn { display: flex; align-items: center; justify-content: center; } .header-cta { padding: 8px 12px; font-size: 0.8rem; min-height: 36px; order: 2; } .nav-menu { position: fixed; top: 72px; left: 0; width: 100%; background: var(--bg-black-surface); border-bottom: 1px solid var(--border-dark); padding: 16px; flex-direction: column; gap: 8px; display: none; z-index: 999; height: calc(100vh - 72px); overflow-y: auto; align-items: stretch; } .nav-menu.active { display: flex; } .nav-item-dropdown { width: 100%; } .dropdown-toggle { width: 100%; justify-content: space-between; } .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 1px solid var(--border-dark); padding: 12px; margin-top: 8px; display: none; background: var(--bg-black); width: 100%; grid-template-columns: 1fr 1fr; min-width: 0; } .nav-item-dropdown:hover .dropdown-menu { display: none; } .nav-item-dropdown.active .dropdown-menu { display: grid; } .nav-menu > li > a, .nav-menu > li > span { width: 100%; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border-dark); } .article-hero { height: 240px; } .about-grid-section, .about-grid-section.reverse { grid-template-columns: 1fr; gap: 24px; } .about-grid-section.reverse .about-text-col { order: 0; } .about-grid-section.reverse .about-img-col { order: 0; } }
        @media (max-width: 580px) { .blog-cards-grid { grid-template-columns: 1fr; } .features-grid { grid-template-columns: 1fr; } .tools-cards-grid { grid-template-columns: 1fr; } .contact-info-card, .contact-form-card, .converter-app-card { padding: 20px; } .featured-blog-content { padding: 24px; } .hero-section { padding: 40px 0 30px; } .showcase-block { padding: 50px 0; } .tools-directory-section { padding: 50px 0; } .features-section { padding: 50px 0; } }
        @media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } .entry-name { max-width: 120px; } .container { padding: 0 16px; } .converter-app-card { padding: 18px 14px; } .dropzone-box { padding: 30px 16px; } .dropzone-box h3 { font-size: 1rem; } .dropzone-box p { font-size: 0.82rem; } .dropzone-icon { width: 44px; height: 44px; } .entry-thumb { width: 36px; height: 36px; } .entry-name { font-size: 0.82rem; } .entry-size { font-size: 0.72rem; } .badge-status { font-size: 0.7rem; padding: 2px 6px; } .btn-download-single { padding: 4px 8px; font-size: 0.72rem; } .btn-remove-entry, .btn-reorder { padding: 4px; min-width: 32px; min-height: 32px; } .btn-download-single { padding: 4px 8px; font-size: 0.72rem; } .btn-remove-entry, .btn-reorder { padding: 4px; min-width: 32px; min-height: 32px; } .btn-queue-cta { min-width: 100%; padding: 11px 14px; font-size: 0.85rem; } .metric-stat-number { font-size: 1.5rem; } .metric-stat-label { font-size: 0.78rem; } }
        @media (max-width: 380px) { .hero-heading { font-size: 1.7rem; } .hero-subheading { font-size: 0.9rem; } .home-format-badge { padding: 5px 10px; font-size: 0.8rem; } .home-format-arrow { width: 16px; height: 16px; } .entry-name { max-width: 80px; } .entry-right { gap: 4px; } .btn-download-single { padding: 3px 6px; font-size: 0.68rem; } .converter-card-title { font-size: 1.1rem; } .converter-card-subtitle { font-size: 0.82rem; } .metrics-grid { gap: 12px; } }