:root{--bg:#0f1117;--bg2:#181b26;--bg3:#1f2333;--border:#2a2f42;--text:#d8dce8;--text2:#8b91a8;--accent:#5b8af5;--accent2:#3dd6a7;--accent3:#f5a623;--danger:#e05555;--radius:10px;--radius-sm:6px;--font:system-ui,-apple-system,'Segoe UI',sans-serif;--mono:'SF Mono',Consolas,monospace}
*{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6}
body{min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{background:var(--bg2);border-bottom:1px solid var(--border);padding:0 24px;position:sticky;top:0;z-index:100}
.header-inner{max-width:1440px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{display:flex;align-items:center;gap:8px;font-size:1.15rem;font-weight:700;color:var(--text)}
.logo-accent{color:var(--accent2)}
.logo svg{color:var(--accent)}
.site-nav{display:flex;gap:20px}
.site-nav a{color:var(--text2);font-size:.9rem;padding:4px 0;border-bottom:2px solid transparent}
.site-nav a.active,.site-nav a:hover{color:var(--text);border-bottom-color:var(--accent)}
.app-shell{max-width:1440px;margin:0 auto;padding:24px;display:grid;grid-template-columns:300px 1fr 360px;gap:24px;align-items:start}
@media(max-width:1200px){.app-shell{grid-template-columns:1fr 1fr}.compare-panel{grid-column:1/-1}}
@media(max-width:800px){.app-shell{grid-template-columns:1fr;padding:16px}}
.panel-title{font-size:1.15rem;font-weight:700;margin-bottom:16px}
.sub-title{font-size:1rem;font-weight:600;margin:20px 0 8px}
.sub-note{font-size:.82rem;color:var(--text2);margin-bottom:8px}
.input-panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:sticky;top:72px}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.field{display:flex;flex-direction:column;gap:4px}
.field-label{font-size:.78rem;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.4px}
.num-input,.text-input,.select-input{background:var(--bg3);border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:var(--radius-sm);font-size:.9rem;width:100%;outline:none;transition:border .15s}
.num-input:focus,.text-input:focus,.select-input:focus{border-color:var(--accent)}
.num-input::-webkit-inner-spin-button{opacity:.5}
.select-input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238b91a8'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:28px}
.preset-bar{margin-bottom:8px}
.preset-bar .select-input{margin-top:4px}
.action-row{display:flex;gap:8px;margin-top:16px}
.btn{padding:8px 16px;border-radius:var(--radius-sm);font-size:.85rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#4a78e0}
.btn-secondary{background:var(--bg3);color:var(--text);border-color:var(--border)}
.btn-secondary:hover{background:var(--border)}
.btn-ghost{background:transparent;color:var(--text2);border-color:var(--border)}
.btn-ghost:hover{color:var(--text)}
.saved-bikes{margin-top:16px;display:flex;flex-direction:column;gap:6px}
.saved-bike-chip{display:flex;align-items:center;justify-content:space-between;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 10px;font-size:.8rem}
.saved-bike-chip button{background:none;border:none;color:var(--danger);cursor:pointer;font-size:.75rem}
.viz-panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.viz-header{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.viz-controls{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.viz-label{font-size:.8rem;color:var(--text2)}
.chip{display:inline-flex;align-items:center;gap:4px;background:var(--bg3);border:1px solid var(--border);border-radius:20px;padding:4px 10px;font-size:.78rem;color:var(--text2);cursor:pointer;transition:all .15s}
.chip:has(input:checked){background:var(--accent);color:#fff;border-color:var(--accent)}
.chip input{accent-color:var(--accent);width:14px;height:14px}
.chart-container{min-height:260px;overflow-x:auto;margin-bottom:16px}
.chart-container svg{display:block}
.chart-bar{transition:opacity .2s}
.chart-bar:hover{opacity:.85}
.summary-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin-bottom:20px}
.stat-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;text-align:center}
.stat-value{font-size:1.4rem;font-weight:700;font-family:var(--mono)}
.stat-label{font-size:.72rem;color:var(--text2);text-transform:uppercase;letter-spacing:.5px}
.gradient-container{margin-top:8px;overflow-x:auto}
.gradient-container svg{display:block}
.swap-sim{margin-top:20px;border-top:1px solid var(--border);padding-top:16px}
.swap-row{display:flex;align-items:flex-end;gap:8px;flex-wrap:wrap;margin-top:8px}
.num-sm{width:80px}
.swap-result{margin-top:8px;font-size:.85rem;color:var(--text2)}
.compare-panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.compare-selects{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0;align-items:end}
.compare-selects .btn{justify-self:start}
.compare-output{min-height:200px;margin-top:16px}
.compare-output svg{display:block;margin-top:8px}
.compare-table{width:100%;border-collapse:collapse;font-size:.82rem;margin-top:8px}
.compare-table th,.compare-table td{padding:6px 10px;text-align:left;border-bottom:1px solid var(--border)}
.compare-table th{color:var(--text2);font-weight:600;font-size:.75rem;text-transform:uppercase}
.compare-table .diff-pos{color:var(--accent2)}
.compare-table .diff-neg{color:var(--accent3)}
.notes-section{margin-top:24px;border-top:1px solid var(--border);padding-top:16px}
.step-list,.notes-list{padding-left:18px;display:flex;flex-direction:column;gap:6px;font-size:.85rem;color:var(--text2)}
.step-list{margin-bottom:16px}
.notes-section p{font-size:.85rem;color:var(--text2);margin-bottom:8px}
.site-footer{border-top:1px solid var(--border);background:var(--bg2);margin-top:auto;padding:24px}
.footer-inner{max-width:1440px;margin:0 auto;display:flex;flex-wrap:wrap;gap:8px 24px;align-items:center;font-size:.8rem;color:var(--text2)}
.footer-links{display:flex;gap:16px}
.footer-meta{margin-left:auto;opacity:.6}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;color:var(--text2);text-align:center;gap:8px}
.empty-state svg{opacity:.3}
@media print{.site-header,.site-footer,.input-panel,.compare-panel,.viz-controls,.action-row,.swap-sim{display:none}.viz-panel{border:none;padding:0}.app-shell{display:block}}
@media(max-width:800px){.site-nav{gap:12px}.compare-selects{grid-template-columns:1fr}.field-grid{grid-template-columns:1fr}}


/* 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;
}