:root{--bg:#f8fafc;--surface:#fff;--surface-soft:#fff7f8;--text:#111827;--muted:#475569;--subtle:#64748b;--primary:#e11d48;--primary-hover:#be123c;--primary-soft:#ffe4ea;--secondary:#111827;--success:#10b981;--success-soft:#d1fae5;--border:#e2e8f0;--border-strong:#cbd5e1;--warning:#f59e0b;--danger:#dc2626;--radius:14px;--radius-lg:22px;--shadow:0 18px 48px rgba(15,23,42,.08);--font:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6}a{color:inherit}.navbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 48px;background:rgba(255,255,255,.90);border-bottom:1px solid var(--border);backdrop-filter:blur(18px)}.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;font-size:1.15rem;letter-spacing:-.03em}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#e11d48,#fb7185);color:#fff;box-shadow:0 10px 26px rgba(225,29,72,.22)}.nav-links{display:flex;gap:6px;flex-wrap:wrap}.nav-links a{text-decoration:none;color:var(--muted);padding:9px 12px;border-radius:999px;font-size:.92rem;font-weight:750}.nav-links a:hover,.nav-links a.active{background:var(--primary-soft);color:var(--primary)}.container{max-width:1200px;margin:0 auto;padding:42px 22px 76px}.hero,.tool-header{text-align:center;max-width:940px;margin:24px auto 32px}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;padding:7px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-weight:850;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}.hero h1,.tool-header h1{margin:0 0 14px;font-size:clamp(2.25rem,5.4vw,4.35rem);line-height:1.02;letter-spacing:-.06em}.tool-header h1{font-size:clamp(2rem,4vw,3.4rem)}.subtitle{margin:0 auto;color:var(--muted);font-size:1.13rem;max-width:780px}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}.btn-primary,.btn-secondary,.btn-download{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:12px;padding:13px 18px;font-weight:850;text-decoration:none;border:1px solid transparent;cursor:pointer;font-size:1rem}.btn-primary{width:auto;background:var(--primary);color:white;box-shadow:0 14px 30px rgba(225,29,72,.20)}.btn-primary:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px)}.btn-primary:disabled{opacity:.65;cursor:not-allowed}.btn-secondary{background:#fff;color:var(--text);border-color:var(--border)}.btn-download{background:var(--success);color:white;margin:16px auto}.tool-card,.tool-options,.result-card,.seo-content,.feature-card,.tool-card-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow)}.tool-card,.tool-options{padding:30px;margin:0 auto 22px;max-width:900px}.upload-zone{border:2px dashed #fecdd3;border-radius:22px;padding:48px 26px;text-align:center;background:linear-gradient(180deg,#fff,#fff7f8);cursor:pointer;transition:.2s}.upload-zone:hover,.upload-zone.dragover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-2px)}.upload-icon{color:var(--primary);margin-bottom:15px}.upload-text{font-size:1.18rem;font-weight:850;margin:0 0 4px}.upload-text .link{color:var(--primary);text-decoration:none}.upload-hint{margin:0;color:var(--subtle);font-size:.9rem}.option-group{margin-bottom:18px}.option-group label{display:block;margin-bottom:8px;font-size:.92rem;font-weight:850}.quality-buttons{display:flex;gap:10px;flex-wrap:wrap}.quality-btn{flex:1;min-width:130px;border:1px solid var(--border);background:#fff;color:var(--muted);border-radius:12px;padding:12px 14px;font-weight:850;cursor:pointer}.quality-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.result-section{max-width:980px;margin:22px auto}.result-card{padding:30px;text-align:center}.result-card h3{margin:0 0 18px;color:var(--success)}.result-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:12px}.stat{background:#f8fafc;border:1px solid var(--border);border-radius:16px;padding:16px}.stat-label{display:block;color:var(--subtle);font-size:.82rem;font-weight:750}.stat-value{display:block;margin-top:4px;font-size:1.2rem;font-weight:900;letter-spacing:-.03em}.stat.highlight{background:linear-gradient(180deg,#ecfdf5,#fff);border-color:#a7f3d0}.stat.highlight .stat-value{color:var(--success)}.tools-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:32px 0}.tool-card-link{text-decoration:none}.tool-card-item{padding:24px;height:100%;transition:.18s transform,.18s border-color}.tool-card-item.featured{border-color:#fecdd3;background:linear-gradient(180deg,#fff7f8,#fff)}.tool-card-item:hover{transform:translateY(-3px);border-color:#fb7185}.tool-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:var(--primary-soft);color:var(--primary);font-size:1.38rem;margin-bottom:16px}.tool-card-item h3{margin:0 0 8px;letter-spacing:-.02em}.tool-card-item p{margin:0;color:var(--muted);font-size:.96rem}.tool-card-item .micro{margin-top:12px;color:var(--success);font-weight:800;font-size:.82rem}.trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:24px 0}.feature-card{padding:18px}.feature-card strong{display:block;margin-bottom:4px}.seo-content{padding:32px;margin-top:38px}.seo-content h2{margin:0 0 14px;font-size:1.65rem;letter-spacing:-.03em}.seo-content h3{margin:24px 0 8px}.seo-content p,.seo-content li{color:var(--muted)}.footer{border-top:1px solid var(--border);padding:28px 22px;text-align:center;color:var(--subtle);background:#fff}@media(max-width:880px){.navbar{padding:14px 18px;align-items:flex-start}.nav-links{width:100%}.tools-grid{grid-template-columns:1fr 1fr}.trust-row{grid-template-columns:1fr 1fr}}@media(max-width:560px){.container{padding:28px 16px}.hero h1,.tool-header h1{font-size:2.2rem}.tools-grid,.trust-row{grid-template-columns:1fr}.btn-primary,.btn-secondary{width:100%}.tool-card,.tool-options{padding:22px}}