@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");:root{--bg:#fff;--bg-secondary:#f8f9fb;--bg-tertiary:#f0f2f5;--text:#1a1a2e;--text-secondary:#6b7280;--text-tertiary:#9ca3af;--accent:#2563eb;--accent-hover:#1d4ed8;--accent-light:#eff6ff;--border:#e5e7eb;--success:#10b981;--success-light:#ecfdf5;--danger:#ef4444;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow-md:0 4px 12px rgba(0,0,0,.08);--shadow-lg:0 8px 30px rgba(0,0,0,.1);--radius:10px;--radius-lg:16px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.container{max-width:960px;margin:0 auto;padding:0 20px}.header{padding:16px 0;border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;background:hsla(0,0%,100%,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:100}.header-inner{display:flex;align-items:center;justify-content:space-between}.logo{font-size:22px;font-weight:800;color:var(--accent);letter-spacing:-.5px}.logo span{color:var(--text)}.nav-links{display:flex;gap:24px;list-style:none}.nav-links a{font-size:14px;font-weight:500;color:var(--text-secondary);transition:color .2s}.nav-links a:hover{color:var(--text)}.hero{text-align:center;padding:64px 0 48px}.hero h1{font-size:44px;font-weight:800;letter-spacing:-1.5px;line-height:1.1;margin-bottom:14px;color:var(--text)}.hero h1 em{font-style:normal;color:var(--accent)}.hero p{font-size:18px;color:var(--text-secondary);max-width:520px;margin:0 auto;line-height:1.6}.tools-section{padding:0 0 64px}.tools-section h2{font-size:14px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-tertiary);margin-bottom:20px}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:14px;gap:14px}.tool-card{display:flex;align-items:center;gap:14px;padding:18px 20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all .2s}.tool-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-1px)}.tool-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.tool-card h3{font-size:15px;font-weight:600;margin-bottom:2px}.tool-card p{font-size:13px;color:var(--text-secondary);line-height:1.4}.tool-page{padding:48px 0 80px;text-align:center}.tool-page h1{font-size:32px;font-weight:800;letter-spacing:-1px;margin-bottom:8px}.tool-page>p{color:var(--text-secondary);font-size:16px;margin-bottom:36px}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:56px 40px;text-align:center;cursor:pointer;transition:all .2s;background:var(--bg-secondary);position:relative}.upload-zone.dragover,.upload-zone:hover{border-color:var(--accent);background:var(--accent-light)}.upload-zone .icon{font-size:40px;margin-bottom:12px}.upload-zone h3{font-size:17px;font-weight:600;margin-bottom:6px}.upload-zone p{font-size:14px;color:var(--text-secondary)}.upload-zone input{position:absolute;inset:0;opacity:0;cursor:pointer}.file-list{margin-top:20px;text-align:left}.file-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:8px;font-size:14px}.file-item .name{font-weight:500;flex:1 1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-right:12px}.file-item .size{color:var(--text-tertiary);font-size:13px;margin-right:12px;flex-shrink:0}.file-item .remove{background:none;border:none;color:var(--text-tertiary);cursor:pointer;font-size:18px;padding:0 4px;transition:color .2s}.file-item .remove:hover{color:var(--danger)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius);font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s;border:none}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow-md)}.btn-primary:disabled{background:var(--text-tertiary);cursor:not-allowed;box-shadow:none}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#059669}.btn-outline{background:var(--bg);color:var(--text);border:1px solid var(--border)}.btn-outline:hover{border-color:var(--accent);color:var(--accent)}.actions{display:flex;gap:10px;justify-content:center;margin-top:24px;flex-wrap:wrap}.progress-bar{width:100%;max-width:400px;height:6px;background:var(--bg-tertiary);border-radius:3px;margin:20px auto;overflow:hidden}.progress-fill{height:100%;background:var(--accent);border-radius:3px;transition:width .3s}.result-box{margin-top:24px;padding:24px;background:var(--success-light);border:1px solid #a7f3d0;border-radius:var(--radius);text-align:center}.result-box .check{font-size:36px;margin-bottom:8px}.result-box h3{font-size:17px;font-weight:600;margin-bottom:4px;color:#065f46}.result-box p{font-size:14px;color:#047857}.footer{padding:32px 0;border-top:1px solid var(--border);text-align:center;font-size:13px;color:var(--text-tertiary)}.footer-links{display:flex;justify-content:center;gap:24px;margin-bottom:12px}.footer-links a:hover{color:var(--text-secondary)}.options-row{display:flex;gap:16px;justify-content:center;align-items:center;margin-top:16px;flex-wrap:wrap;font-size:14px}.options-row label{display:flex;align-items:center;gap:6px;color:var(--text-secondary)}.options-row input[type=number],.options-row select{padding:6px 10px;border:1px solid var(--border);border-radius:6px;font-family:inherit;font-size:14px;background:var(--bg)}.ad-slot{background:var(--bg-secondary);border:1px dashed var(--border);border-radius:var(--radius);padding:20px;text-align:center;margin:24px 0;font-size:12px;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:1px}@media (max-width:640px){.hero h1{font-size:30px}.hero p{font-size:16px}.tools-grid{grid-template-columns:1fr}.nav-links{gap:14px}.upload-zone{padding:36px 20px}}