*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f1117;--surface:#1a1d27;--surface2:#242836;--border:#2e3348;--text:#e8eaf0;--text-dim:#8b8fa8;--accent:#4ade80;--accent2:#38bdf8;--warn:#fbbf24;--danger:#f87171;--radius:12px;--radius-sm:8px;--font:system-ui,-apple-system,sans-serif;--max-width:1100px}
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:var(--max-width);margin:0 auto;padding:0 20px}
img,svg{max-width:100%;height:auto}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* Header */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);padding:14px 0;position:sticky;top:0;z-index:100}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:1.2rem}
.logo:hover{text-decoration:none}
.logo svg{color:var(--accent)}
.nav{display:flex;gap:20px;flex-wrap:wrap}
.nav a{color:var(--text-dim);font-size:.9rem;font-weight:500}
.nav a:hover{color:var(--text)}

/* Hero */
.hero{padding:80px 0 60px;text-align:center;background:linear-gradient(180deg,var(--surface) 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:16px}
.hero-sub{font-size:1.1rem;color:var(--text-dim);max-width:600px;margin:0 auto 28px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:1rem;cursor:pointer;border:none;transition:all .2s}
.btn-primary{background:var(--accent);color:#000}
.btn-primary:hover{background:#22c55e;text-decoration:none;transform:translateY(-1px)}
.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--border);text-decoration:none}
.btn-full{width:100%}

/* Sections */
section{padding:60px 0}
section h2{font-size:1.6rem;font-weight:700;margin-bottom:8px}
.section-into{color:var(--text-dim);margin-bottom:28px}

/* Diagnostic */
.diagnostic-section{background:var(--surface)}
.diagnostic-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:24px}
@media(max-width:800px){.diagnostic-layout{grid-template-columns:1fr}}
.diagnostic-form{display:flex;flex-direction:column;gap:20px}
fieldset{border:1px solid var(--border);border-radius:var(--radius);padding:20px}
legend{font-weight:600;padding:0 8px;color:var(--accent2)}
label{display:block;font-size:.9rem;color:var(--text-dim);margin-bottom:6px}
select,input[type=text]{width:100%;padding:10px 14px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:1rem}
select:focus,input:focus{outline:2px solid var(--accent);outline-offset:2px}
.radio-group{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.radio-card{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s}
.radio-card:hover{border-color:var(--accent2)}
.radio-card input[type=radio]{accent-color:var(--accent);width:18px;height:18px}
.radio-card:has(input:checked){border-color:var(--accent);background:rgba(74,222,128,.08)}
.radio-label{font-size:.95rem}
.range-input{width:100%;accent-color:var(--accent);margin-top:8px}
.range-labels{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-dim);margin-top:4px}

/* Results */
.results-panel{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);padding:24px;min-height:300px}
.results-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:var(--text-dim);gap:16px}
.results-empty svg{color:var(--border)}
.result-step{padding:16px 0;border-bottom:1px solid var(--border)}
.result-step:last-child{border-bottom:none}
.result-step h4{color:var(--accent);font-size:1rem;margin-bottom:4px}
.result-step p{font-size:.95rem;color:var(--text-dim)}
.result-direction{display:inline-block;padding:2px 10px;border-radius:4px;font-weight:600;font-size:.85rem;margin-right:8px}
.result-tighten{background:rgba(74,222,128,.15);color:var(--accent)}
.result-loosen{background:rgba(248,113,113,.15);color:var(--danger)}
.result-warning{background:rgba(251,191,36,.15);color:var(--warn);padding:12px;border-radius:var(--radius-sm);margin-top:12px;font-size:.9rem}
.result-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}

/* Presets */
.presets-section{background:var(--bg)}
.preset-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;margin-top:24px}
.preset-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:left;cursor:pointer;transition:all .2s;color:var(--text)}
.preset-card:hover{border-color:var(--accent);transform:translateY(-2px);text-decoration:none}
.preset-card h3{font-size:1.05rem;margin-bottom:8px}
.preset-card p{font-size:.9rem;color:var(--text-dim);margin-bottom:12px}
.preset-tag{display:inline-block;padding:3px 10px;background:var(--surface2);border-radius:4px;font-size:.8rem;color:var(--accent2)}

/* Scenario */
.scenario-section{background:var(--surface)}
.scenario-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;margin-top:24px}
@media(max-width:800px){.scenario-layout{grid-template-columns:1fr}}
.scenario-story p{margin-bottom:14px;color:var(--text-dim)}
.scenario-tips{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.scenario-tips h3{margin-bottom:12px;color:var(--warn)}
.scenario-tips ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.scenario-tips li{padding-left:20px;position:relative;font-size:.95rem;color:var(--text-dim)}
.scenario-tips li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;background:var(--warn);border-radius:50%}

/* Reference */
.reference-section{background:var(--bg)}
.reference-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin-top:24px}
.ref-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.ref-card h3{font-size:1.05rem;margin-bottom:10px;color:var(--accent2)}
.ref-card p,.ref-card li{font-size:.9rem;color:var(--text-dim)}
.ref-card ul{list-style:none;display:flex;flex-direction:column;gap:8px;margin-top:8px}
.ref-card li{padding-left:18px;position:relative}
.ref-card li::before{content:"";position:absolute;left:0;top:7px;width:6px;height:6px;background:var(--accent);border-radius:50%}
.ref-table{width:100%;border-collapse:collapse;margin-top:8px}
.ref-table th,.ref-table td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:.9rem}
.ref-table th{color:var(--text-dim);font-weight:600}
.ref-table td{color:var(--text)}
.print-section{margin-top:28px;text-align:center}
.print-note{font-size:.85rem;color:var(--text-dim);margin-top:8px}

/* Mistakes */
.mistakes-section{background:var(--surface)}
.mistakes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin-top:24px}
.mistake-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px;border-left:3px solid var(--danger)}
.mistake-card h3{font-size:1.05rem;margin-bottom:8px;color:var(--danger)}
.mistake-card p{font-size:.9rem;color:var(--text-dim)}

/* Footer */
.site-footer{background:var(--surface);border-top:1px solid var(--border);padding:40px 0 24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;margin-bottom:24px}
.footer-grid strong{display:block;margin-bottom:8px}
.footer-grid a{display:block;color:var(--text-dim);font-size:.9rem;margin-bottom:4px}
.footer-grid a:hover{color:var(--text)}
.footer-note{font-size:.8rem;color:var(--text-dim);text-align:center}

/* Print */
@media print{.site-header,.site-footer,.hero,.presets-section,.scenario-section,.mistakes-section,.print-section,.btn,nav{display:none}body{background:#fff;color:#000}section{padding:20px 0}.results-panel{border:none;padding:0}}

/* Focus */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Saved results */
.saved-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:rgba(74,222,128,.1);border-radius:20px;font-size:.85rem;color:var(--accent);margin-bottom:16px}



/* 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;
}