:root{--navy:#071a44;--navy2:#0c1f52;--blue:#2563eb;--orange:#f97316;--bg:#071a44;--surface:#f5f7fb;--text:#101827;--muted:#64748b;--line:#dbe3ef;--card:#fff}*{box-sizing:border-box}body{background:radial-gradient(circle at top left,#163b82,var(--navy) 42%,#020617);color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit}.app-shell{grid-template-columns:260px 1fr;min-height:100vh;display:grid}.sidebar{background:linear-gradient(180deg,var(--navy),#04112d);color:#fff;height:100vh;padding:24px;position:sticky;top:0}.brand{align-items:center;gap:12px;margin-bottom:32px;display:flex}.brand span{background:var(--orange);border-radius:14px;place-items:center;width:44px;height:44px;font-weight:900;display:grid}.brand small{color:#bed2ff;display:block}.sidebar nav{gap:8px;display:grid}.sidebar a{color:#dbeafe;border-radius:14px;padding:12px 14px;font-weight:700;text-decoration:none}.sidebar a.active,.sidebar a:hover{color:#fff;background:#ffffff21}.main-area{background:linear-gradient(180deg,#ffffff0f,#ffffff05), var(--surface);border-top-left-radius:34px;border-bottom-left-radius:34px;min-width:0;overflow:hidden}.topbar{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:3;background:#ffffffd9;padding:18px 24px;position:sticky;top:0}main{max-width:1220px;margin:0 auto;padding:24px}.page{gap:22px;display:grid}.page.narrow{max-width:780px;margin:0 auto}.page-head h1,.hero-panel h1{letter-spacing:-.04em;margin:6px 0 12px;font-size:clamp(32px,5vw,58px);line-height:1.03}.page-head p,.hero-panel p{color:var(--muted);font-size:18px;line-height:1.6}.eyebrow{text-transform:uppercase;letter-spacing:.18em;color:#1d4ed8;font-size:12px;font-weight:900}.hero-panel{border:1px solid var(--line);background:linear-gradient(135deg,#fff,#eef5ff);border-radius:30px;grid-template-columns:1.25fr 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img,.vehicle-image.placeholder{object-fit:cover;color:#475569;background:linear-gradient(135deg,#e2e8f0,#cbd5e1);border-radius:24px;place-items:center;width:100%;height:235px;font-weight:900;display:grid}.vehicle-image-card figcaption{color:var(--muted);margin-top:8px;font-size:12px}.feature-grid,.flow-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.feature-card{padding:20px;text-decoration:none;transition:all .16s}.feature-card:hover{border-color:#93c5fd;transform:translateY(-2px)}.feature-icon{margin-bottom:12px;font-size:28px;display:block}.feature-card strong{font-size:18px}.feature-card p{color:var(--muted);line-height:1.5}.stack{gap:14px;display:grid}.issue-card,.flow-card,.result-card,.empty-card{padding:18px}.issue-card h3,.flow-card h3{margin:10px 0 6px}.issue-card p,.flow-card p,.muted{color:var(--muted);line-height:1.5}.flow-card ul,.result-card 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span{font-size:16px}.mobile-tabs a.active{color:#1d4ed8;background:#eff6ff}.topbar{padding:12px;position:static}}