@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f0f13;--card:#1a1a2e;--border:rgba(255,255,255,.08);--text:#e4e4e7;--text-muted:#a1a1aa;--accent:#fbbf24;--accent2:#eab308;--accent3:#ca8a04;--gradient:linear-gradient(135deg,#fbbf24,#eab308,#ca8a04);--radius:0.75rem;--font:'Inter',sans-serif;--mono:'JetBrains Mono',monospace}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6;min-height:100vh}
.container{max-width:900px;margin:0 auto;padding:0 1.25rem}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{background:var(--card);border-bottom:1px solid var(--border);padding:.875rem 0;position:sticky;top:0;z-index:100;backdrop-filter:blur(12px)}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:.5rem;font-weight:800;font-size:1.15rem;color:var(--text)}
.logo-icon{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:1.35rem;font-weight:900}
.site-header nav{display:flex;gap:1.25rem}
.site-header nav a{color:var(--text-muted);font-size:.875rem;font-weight:500}
.site-header nav a:hover{color:var(--accent)}

.hero{text-align:center;padding:3rem 0 2rem}
.hero h1{font-size:2.5rem;font-weight:900;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem}
.hero p{color:var(--text-muted);font-size:1.05rem;max-width:560px;margin:0 auto}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}

.ad-slot{background:rgba(255,255,255,.02);border:1px dashed rgba(255,255,255,.06);border-radius:var(--radius);min-height:90px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:.75rem;margin:1.5rem 0}

.form-group{margin-bottom:1.25rem}
.form-group label{display:block;font-weight:600;font-size:.875rem;margin-bottom:.35rem;color:var(--text-muted)}
.form-group input,.form-group select{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:.7rem 1rem;color:var(--text);font-family:var(--font);font-size:.95rem;transition:border .2s}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--accent)}

.input-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}

.results-card{margin-top:1.5rem}
.results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.result-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;text-align:center}
.result-item .label{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.35rem}
.result-item .value{font-size:1.5rem;font-weight:800;font-family:var(--mono)}
.result-item .value.positive{color:#4ade80}
.result-item .value.negative{color:#f87171}
.result-item .value.accent{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.comparison-section{margin-top:2rem}
.comparison-section h2{font-size:1.25rem;font-weight:800;margin-bottom:1rem}
.btn{display:inline-flex;align-items:center;gap:.4rem;background:var(--gradient);color:#000;border:none;padding:.6rem 1.2rem;border-radius:var(--radius);font-weight:700;font-size:.85rem;cursor:pointer;font-family:var(--font);transition:opacity .2s}
.btn:hover{opacity:.88}
.btn-outline{background:transparent;border:1px solid var(--accent);color:var(--accent)}
.btn-outline:hover{background:rgba(251,191,36,.1)}
.btn-sm{padding:.4rem .8rem;font-size:.8rem}
.btn-danger{background:linear-gradient(135deg,#f87171,#ef4444);color:#fff}

.compare-table{width:100%;border-collapse:collapse;margin-top:1rem}
.compare-table th,.compare-table td{padding:.65rem .75rem;text-align:left;border-bottom:1px solid var(--border);font-size:.875rem}
.compare-table th{color:var(--text-muted);font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em}
.compare-table td input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:.5rem;padding:.45rem .6rem;color:var(--text);font-family:var(--font);font-size:.85rem}
.compare-table td input:focus{outline:none;border-color:var(--accent)}
.compare-table .roi-val{font-weight:700;font-family:var(--mono)}
.compare-table .roi-val.positive{color:#4ade80}
.compare-table .roi-val.negative{color:#f87171}
.remove-row{background:none;border:none;color:#f87171;cursor:pointer;font-size:1.1rem;padding:.2rem}

.seo-section{margin-top:2.5rem}
.seo-section h2{font-size:1.35rem;font-weight:800;margin-bottom:.75rem}
.seo-section h3{font-size:1.05rem;font-weight:700;margin:1.25rem 0 .5rem;color:var(--accent)}
.seo-section p,.seo-section li{color:var(--text-muted);font-size:.925rem;line-height:1.7}
.seo-section ul{padding-left:1.25rem;margin:.5rem 0}
.seo-section code{background:var(--bg);padding:.15rem .4rem;border-radius:.3rem;font-family:var(--mono);font-size:.85rem;color:var(--accent)}

.faq{margin-top:2rem}
.faq details{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:.75rem}
.faq summary{padding:1rem 1.25rem;font-weight:600;cursor:pointer;font-size:.95rem;list-style:none;display:flex;align-items:center;justify-content:space-between}
.faq summary::after{content:'+';font-size:1.2rem;color:var(--accent);font-weight:700;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .faq-body{padding:0 1.25rem 1rem;color:var(--text-muted);font-size:.9rem;line-height:1.7}

.site-footer{margin-top:3rem;padding:2rem 0;border-top:1px solid var(--border);text-align:center}
.site-footer p{color:var(--text-muted);font-size:.8rem}
.site-footer nav{margin-top:.5rem;display:flex;justify-content:center;gap:1.25rem}
.site-footer nav a{color:var(--text-muted);font-size:.8rem}

.content-section h1{font-size:2rem;font-weight:800;margin-bottom:1.5rem;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.content-section h3{margin:1.25rem 0 .5rem;font-weight:700}
.content-section p{color:var(--text-muted);margin-bottom:.75rem;line-height:1.7}

.hidden{display:none!important}

@media(max-width:640px){
  .hero h1{font-size:1.75rem}
  .input-row{grid-template-columns:1fr}
  .results-grid{grid-template-columns:1fr}
  .compare-table{font-size:.8rem}
  .compare-table td input{padding:.35rem .45rem;font-size:.8rem}
}