*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f1117;--bg2:#161822;--bg3:#1c1f2b;--surface:#232636;--border:#2a2d3e;--text:#e5e7eb;--text-dim:#9ca3af;--text-muted:#6b7280;--accent:#f59e0b;--accent-dim:#d97706;--accent-glow:rgba(245,158,11,0.15);--green:#34d399;--yellow:#fbbf24;--red:#f87171;--radius:12px;--radius-sm:8px;--font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;--shadow:0 4px 24px rgba(0,0,0,0.3)}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
img,svg{max-width:100%}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(12px)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.15rem;color:var(--text)}
.logo:hover{text-decoration:none}
.logo .accent{color:var(--accent)}
.nav{display:flex;gap:24px}
.nav a{color:var(--text-dim);font-size:0.9rem;font-weight:500}
.nav a:hover{color:var(--text);text-decoration:none}
.hero{padding:60px 0 48px;text-align:center;background:linear-gradient(180deg,var(--bg2) 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:16px;background:linear-gradient(135deg,var(--text) 0%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.subtitle{font-size:1.1rem;color:var(--text-dim);max-width:640px;margin:0 auto 32px;line-height:1.7}
.hero-stats{display:flex;justify-content:center;gap:40px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column;align-items:center}
.stat strong{font-size:1.3rem;color:var(--accent)}
.stat span{font-size:0.85rem;color:var(--text-muted)}
.estimator-section{padding:48px 0}
.estimator-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
@media(max-width:860px){.estimator-layout{grid-template-columns:1fr}}
.form-panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.form-panel h2{font-size:1.25rem;margin-bottom:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:4px}
.field label{font-size:0.85rem;font-weight:600;color:var(--text-dim)}
.optional{font-weight:400;color:var(--text-muted);font-size:0.78rem}
.field input,.field select{background:var(--bg3);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:var(--radius-sm);font-size:0.95rem;font-family:inherit;outline:none;transition:border-color 0.2s}
.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.form-actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.btn-primary{background:var(--accent);color:#000;font-weight:700;padding:12px 28px;border:none;border-radius:var(--radius-sm);font-size:1rem;cursor:pointer;transition:background 0.2s,transform 0.1s;font-family:inherit}
.btn-primary:hover{background:var(--accent-dim);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:var(--bg3);color:var(--text);font-weight:600;padding:12px 20px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:0.9rem;cursor:pointer;transition:border-color 0.2s,background 0.2s;font-family:inherit}
.btn-secondary:hover{border-color:var(--accent);background:var(--surface)}
.results-panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px;min-height:400px}
.results-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;min-height:300px;color:var(--text-muted);text-align:center;gap:16px}
.results-placeholder p{max-width:280px}
.health-score{display:flex;align-items:center;gap:24px;margin-bottom:28px}
.score-circle{flex-shrink:0}
.score-label .badge{display:inline-block;padding:4px 14px;border-radius:20px;font-weight:700;font-size:0.85rem;margin-bottom:8px}
.badge-good{background:rgba(52,211,153,0.15);color:var(--green)}
.badge-warn{background:rgba(251,191,36,0.15);color:var(--yellow)}
.badge-bad{background:rgba(248,113,113,0.15);color:var(--red)}
.score-label p{color:var(--text-dim);font-size:0.95rem}
.result-details{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}
.detail-card{background:var(--bg3);border-radius:var(--radius-sm);padding:14px 16px}
.detail-label{display:block;font-size:0.78rem;color:var(--text-muted);margin-bottom:2px}
.detail-value{font-size:1.15rem;font-weight:700}
.advice-section{margin-bottom:24px}
.advice-section h3{font-size:1rem;margin-bottom:12px;color:var(--accent)}
.advice-section ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.advice-section li{padding:10px 14px;background:var(--bg3);border-radius:var(--radius-sm);font-size:0.9rem;border-left:3px solid var(--accent)}
.result-actions{display:flex;gap:10px;flex-wrap:wrap}
.comparison-section{padding:48px 0;background:var(--bg2)}
.section-intro{color:var(--text-dim);margin-bottom:24px;max-width:680px}
.comparison-section h2,.warning-section h2,.winter-section h2,.replacement-section h2{font-size:1.5rem;margin-bottom:8px}
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
.comparison-table{width:100%;border-collapse:collapse;font-size:0.9rem}
.comparison-table th{background:var(--bg3);padding:14px 16px;text-align:left;font-weight:600;color:var(--text-dim);white-space:nowrap}
.comparison-table td{padding:12px 16px;border-top:1px solid var(--border)}
.comparison-table tr:hover td{background:var(--surface)}
.good{color:var(--green);font-weight:700}
.warn{color:var(--yellow);font-weight:700}
.bad{color:var(--red);font-weight:700}
.tag{display:inline-block;padding:2px 10px;border-radius:12px;font-size:0.78rem;font-weight:600}
.tag-good{background:rgba(52,211,153,0.15);color:var(--green)}
.tag-warn{background:rgba(251,191,36,0.15);color:var(--yellow)}
.tag-bad{background:rgba(248,113,113,0.15);color:var(--red)}
.comparison-note{margin-top:16px;font-size:0.85rem;color:var(--text-muted)}
.warning-section{padding:48px 0}
.warning-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:24px}
.warning-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.warning-card.urgent{border-color:var(--red);background:rgba(248,113,113,0.05)}
.warning-icon{font-size:1.8rem;margin-bottom:12px}
.warning-card h3{font-size:1.05rem;margin-bottom:8px}
.warning-card p{font-size:0.9rem;color:var(--text-dim);line-height:1.6}
.winter-section{padding:48px 0;background:var(--bg2)}
.winter-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;margin-top:24px}
.step{background:var(--bg3);border-radius:var(--radius);padding:24px}
.step-num{width:36px;height:36px;background:var(--accent);color:#000;font-weight:800;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:1.1rem}
.step h3{font-size:1rem;margin-bottom:8px}
.step p{font-size:0.88rem;color:var(--text-dim);line-height:1.6}
.replacement-section{padding:48px 0}
.cost-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;margin-top:24px}
.cost-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.cost-card h3{font-size:1rem;margin-bottom:8px}
.cost-price{font-size:1.6rem;font-weight:800;color:var(--accent);margin-bottom:10px}
.cost-card p{font-size:0.88rem;color:var(--text-dim);line-height:1.6}
.site-footer{background:var(--bg2);border-top:1px solid var(--border);padding:40px 0 20px;margin-top:48px}
.footer-top{display:grid;grid-template-columns:1fr auto auto;gap:32px;margin-bottom:24px}
@media(max-width:640px){.footer-top{grid-template-columns:1fr}}
.footer-brand p{color:var(--text-muted);font-size:0.88rem;margin-top:8px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:0.88rem;color:var(--text-dim)}
.footer-ecosystem p{font-size:0.85rem;color:var(--text-muted)}
.footer-bottom{border-top:1px solid var(--border);padding-top:16px;font-size:0.8rem;color:var(--text-muted)}
@media(max-width:640px){.hero-stats{gap:20px}.result-details{grid-template-columns:1fr}.health-score{flex-direction:column;text-align:center}}
@media print{.site-header,.site-footer,.form-panel,.result-actions,.btn-primary,.btn-secondary{display:none!important}.results-panel{border:none;padding:0}.results-content[hidden]{display:block!important}}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}