:root{--bg: #f6f6f7;--surface: #ffffff;--text: #1c1c1e;--muted: #5c5c61;--border: #e3e3e6;--accent: #111113;--accent-hover: #3a3a3f;--radius: 12px;--maxw: 1080px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--text)}.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.site-header-inner{max-width:var(--maxw);margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:24px;flex-wrap:wrap}.brand{font-weight:700;font-size:1.25rem;text-decoration:none;letter-spacing:-.02em}.site-nav{display:flex;gap:4px;flex-wrap:wrap}.site-nav a{text-decoration:none;color:var(--muted);font-size:.9rem;padding:6px 10px;border-radius:8px;white-space:nowrap}.site-nav a:hover{color:var(--text);background:var(--bg)}main{max-width:var(--maxw);margin:0 auto;padding:32px 20px 80px}.hero{text-align:center;padding:16px 0 28px}.hero h1{font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.15;letter-spacing:-.02em;margin:0 0 14px}.lead{max-width:640px;margin:0 auto;color:var(--muted);font-size:1.08rem}.tool{display:grid;grid-template-columns:1fr 1fr;gap:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:0 1px 2px #0000000a}.tool-pane{display:flex;flex-direction:column;gap:14px;min-width:0}.tool-pane h2{margin:0;font-size:1rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.tool-pane img{width:100%;height:320px;object-fit:contain;background:#fbfbfc;border:1px dashed var(--border);border-radius:8px}.tool-actions{display:flex;gap:10px;flex-wrap:wrap}input[type=file]{display:none}.tool-preview{position:relative}.tool-loading{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:#fbfbfce6;border:1px dashed var(--border);border-radius:8px;color:var(--muted);font-size:.95rem;text-align:center;padding:16px;z-index:2}.tool-loading[hidden]{display:none}.tool-loading .spinner{width:28px;height:28px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.gradient-controls{display:flex;flex-direction:column;gap:12px;margin-top:4px}.gradient-controls .presets{display:flex;gap:8px;flex-wrap:wrap}.preset{font:inherit;font-size:.85rem;font-weight:600;padding:8px 14px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--text);cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease}.preset:hover{border-color:var(--text)}.preset.active{background:var(--accent);color:#fff;border-color:var(--accent)}.gradient-controls .stops{display:flex;gap:16px;flex-wrap:wrap;align-items:center}.gradient-controls .stops label{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--muted)}.gradient-controls input[type=color]{width:36px;height:36px;padding:0;border:1px solid var(--border);border-radius:8px;background:none;cursor:pointer}.btn{display:inline-block;font:inherit;font-weight:600;border-radius:8px;padding:12px 18px;cursor:pointer;text-decoration:none;border:1px solid transparent;transition:background .15s ease,color .15s ease,border-color .15s ease}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.btn-secondary:hover{border-color:var(--text)}.save-link{text-align:center}.seo-panel{margin-top:40px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px 36px}.seo-panel h2{font-size:1.4rem;letter-spacing:-.01em;margin:1.6em 0 .5em}.seo-panel h2:first-child{margin-top:0}.seo-panel h3{font-size:1.1rem;margin:1.4em 0 .4em}.seo-panel p{color:#333338;max-width:72ch}.seo-panel ul,.seo-panel ol{max-width:72ch;color:#333338;padding-left:1.3em}.seo-panel li{margin-bottom:.4em}.seo-panel a{text-decoration:underline;text-underline-offset:2px}.faq{margin-top:1.5em;border-top:1px solid var(--border)}.faq details{border-bottom:1px solid var(--border);padding:12px 0}.faq summary{cursor:pointer;font-weight:600;padding-right:12px}.faq details p{margin:8px 0 4px}.site-footer{border-top:1px solid var(--border);background:var(--surface);margin-top:40px}.site-footer-inner{max-width:var(--maxw);margin:0 auto;padding:24px 20px;display:flex;flex-wrap:wrap;gap:16px 32px;justify-content:space-between;color:var(--muted);font-size:.9rem}.site-footer a{color:var(--muted);text-decoration:underline;text-underline-offset:2px}.site-footer nav{display:flex;gap:16px;flex-wrap:wrap}@media (max-width: 760px){.tool{grid-template-columns:1fr}.tool-pane img{height:240px}.seo-panel{padding:24px 20px}}