:root{--bg:#f7f7f5;--panel:#fff;--text:#171717;--muted:#666;--faint:#8a8a8a;--border:#deded8;--strong:#111;--soft:#eeeeea;--danger:#9f241c;--success:#185d35}*{box-sizing:border-box}html{background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{margin:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.site-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:24px;height:60px;padding:0 32px;display:flex}.brand{letter-spacing:0;white-space:nowrap;font-size:15px;font-weight:700}.top-nav{color:var(--muted);flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:18px;font-size:13px;display:flex}.page{max-width:1180px;margin:0 auto;padding:36px 24px 56px}.utility-heading{gap:8px;margin-bottom:22px;display:grid}.utility-heading h1{margin:0;font-size:clamp(28px,5vw,44px);line-height:1.05}.utility-heading p{color:var(--muted);max-width:640px;margin:0;font-size:16px;line-height:1.5}.converter-shell{background:var(--panel);border:1px solid var(--border);border-radius:8px;grid-template-columns:minmax(320px,420px) minmax(0,1fr);gap:0;min-height:560px;display:grid;overflow:hidden}.controls-panel{border-right:1px solid var(--border);grid-auto-rows:max-content;gap:22px;padding:24px;display:grid}.preview-panel{grid-template-rows:1fr auto;min-width:0;padding:24px;display:grid}.dropzone{background:var(--bg);cursor:pointer;text-align:center;border:1px dashed #b9b9b3;border-radius:8px;align-items:center;gap:10px;min-height:178px;padding:24px;display:grid}.dropzone strong{font-size:16px}.dropzone span,.hint{color:var(--muted);font-size:13px;line-height:1.45}.dropzone 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var(--border);color:var(--text)}.error-text{color:var(--danger);font-size:13px;line-height:1.45}.success-text{color:var(--success);font-size:13px;line-height:1.45}.simple-page{background:var(--panel);border:1px solid var(--border);border-radius:8px;max-width:760px;margin:40px auto;padding:32px;line-height:1.6}.simple-page h1{margin:0 0 16px;line-height:1.1}.simple-page h2{margin-top:28px;font-size:18px}.simple-page p,.simple-page li{color:var(--muted)}.pricing-row{border:1px solid var(--border);border-radius:8px;justify-content:space-between;margin-top:16px;padding:18px;display:flex}.seo-content{gap:18px;margin:34px 0 0;display:grid}.seo-section{background:var(--panel);border:1px solid var(--border);border-radius:8px;gap:12px;padding:24px;display:grid}.seo-section h2,.seo-section h3,.seo-section p,.seo-section ul{margin:0}.seo-section h2{font-size:22px;line-height:1.2}.seo-section h3{font-size:15px;line-height:1.25}.seo-section p,.seo-section 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