*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #fafafa;--surface: #ffffff;--primary: #000000;--primary-hover: #171717;--primary-subtle: #f4f4f5;--primary-glow: rgba(0, 0, 0, .05);--text: #09090b;--text-secondary: #52525b;--text-muted: #a1a1aa;--border: #e4e4e7;--border-strong: #27272a;--success: #10b981;--success-bg: #f0fdf4;--error: #ef4444;--error-bg: #fef2f2;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--radius: 8px;--radius-sm: 6px;--font: "Inter", -apple-system, system-ui, sans-serif}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font);background:var(--bg);background-image:radial-gradient(#e5e7eb 1px,transparent 1px);background-size:32px 32px;color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden;position:relative;-webkit-font-smoothing:antialiased}.bg-blobs{display:none}@keyframes blob-float{0%,to{transform:translate(0) rotate(0) scale(1)}33%{transform:translate(50px,-30px) rotate(120deg) scale(1.1)}66%{transform:translate(-20px,50px) rotate(240deg) scale(.9)}}.site-header{position:sticky;top:0;z-index:1000;background:#ffffffb3;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:0 2rem;height:80px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand-icon{width:44px;height:44px;background:linear-gradient(135deg,var(--primary),#60a5fa);border-radius:12px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 16px var(--primary-glow)}.brand-icon svg{width:24px;height:24px;color:#fff}.brand-name{font-size:1.4rem;font-weight:800;color:var(--text);letter-spacing:-.04em}.header-badge{background:var(--success-bg);color:var(--success);font-size:.75rem;font-weight:700;padding:6px 14px;border-radius:100px;display:flex;align-items:center;gap:6px;border:1px solid rgba(16,185,129,.1)}.hero{padding:6rem 2rem 4rem;text-align:center}.hero h1{font-size:clamp(2.5rem,6vw,4rem);font-weight:900;line-height:1.05;letter-spacing:-.05em;margin-bottom:1.5rem}.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--primary),#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:1.25rem;color:var(--text-secondary);max-width:650px;margin:0 auto 2.5rem;font-weight:500}.trust-row{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.trust-chip{background:var(--surface);border:1px solid var(--border);padding:8px 18px;border-radius:100px;font-size:.85rem;font-weight:600;display:flex;align-items:center;gap:8px;box-shadow:var(--shadow-sm)}main{width:100%;max-width:800px;margin:0 auto;padding-bottom:6rem}.app-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:3rem;overflow:hidden}.card-section{padding:2rem}.card-section+.card-section{border-top:1px solid var(--border);background:#fafafa}.section-label{font-size:.7rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:1.5rem}.drop-zone{border:1px dashed var(--border-strong);background:#fff;border-radius:var(--radius);padding:3rem 2rem;transition:all .2s ease;text-align:center;cursor:pointer}.drop-zone:hover{background:var(--primary-subtle);border-style:solid}.drop-icon{width:48px;height:48px;background:var(--primary-subtle);border-radius:var(--radius-sm);display:inline-flex;align-items:center;justify-content:center;margin-bottom:1rem;color:var(--primary)}.drop-icon svg{width:24px;height:24px}.drop-zone h2{font-size:1.1rem;font-weight:700;margin-bottom:.25rem}.drop-zone p{font-size:.85rem;color:var(--text-secondary)}.file-list{margin-top:1rem;display:grid;gap:8px}.file-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;display:flex;align-items:center;gap:12px;animation:slide-in .2s ease-out}@keyframes slide-in{0%{opacity:0;transform:translateY(4px)}}.file-order{width:20px;height:20px;background:var(--primary-subtle);color:var(--primary);font-size:.65rem;font-weight:800;border-radius:4px;display:flex;align-items:center;justify-content:center}.file-thumb{width:36px;height:36px;border-radius:4px;overflow:hidden;background:var(--primary-subtle);flex-shrink:0;display:flex;align-items:center;justify-content:center}.file-thumb img{width:100%;height:100%;object-fit:cover}.file-thumb svg{width:20px;height:20px;color:var(--text-muted)}.file-info{flex:1;min-width:0}.file-name{font-weight:600;font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-meta{font-size:.7rem;color:var(--text-muted);display:flex;gap:6px}.file-type-badge{color:var(--primary);font-weight:700}.file-remove{width:28px;height:28px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:1.2rem}.file-remove:hover{background:var(--error-bg);color:var(--error)}.field label{font-size:.85rem;font-weight:700;margin-bottom:.5rem;display:block;color:var(--text-secondary)}.input-wrap{position:relative}.field input[type=text]{width:100%;padding:.75rem 1rem;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.95rem;font-weight:600;outline:none;transition:.2s}.field input[type=text]:focus{border-color:var(--primary)}.input-suffix{position:absolute;right:1rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-weight:600;font-size:.9rem}.btn-merge{width:100%;padding:.875rem;border:1px solid transparent;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-size:.95rem;font-weight:700;cursor:pointer;transition:.2s;display:flex;align-items:center;justify-content:center;gap:8px}.btn-merge svg{width:18px;height:18px;flex-shrink:0}.btn-merge:hover:not(:disabled){background:var(--primary-hover)}.btn-merge:disabled{background:var(--primary-subtle);color:var(--text-muted);border-color:var(--border);cursor:not-allowed}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.feature-card{background:#fff;padding:2rem;border-radius:24px;border:1px solid var(--border);transition:.3s}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.feature-icon{width:50px;height:50px;background:var(--primary-subtle);color:var(--primary);border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:1.5rem}.faq-item{background:#fff;border-radius:16px;margin-bottom:12px;border:1px solid var(--border)}.faq-item summary{padding:1.25rem;font-weight:700;cursor:pointer;outline:none}.faq-item summary:after{content:"+";float:right}.faq-item[open] summary:after{content:"−"}.faq-item p{padding:0 1.25rem 1.25rem;color:var(--text-secondary)}footer{padding:4rem 2rem;background:var(--bg);border-top:1px solid var(--border)}.footer-inner{max-width:800px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.footer-brand{font-weight:800;letter-spacing:-.02em;color:var(--text-muted)}.footer-local{display:flex;align-items:center;gap:8px;font-size:.85rem;font-weight:600;color:var(--text-muted)}.footer-local svg{width:18px;height:18px;color:var(--success);flex-shrink:0}@media (max-width: 768px){.features-grid{grid-template-columns:1fr}.hero h1{font-size:2.5rem}.site-header{padding:0 1rem}.card-section{padding:1.5rem}.footer-inner{flex-direction:column;gap:1.5rem;text-align:center}}