/* TowGuide — vanilla CSS, mobile-first */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy-950:#081627;
  --navy-900:#0c2138;
  --navy-800:#123154;
  --amber-400:#fbbf24;
  --amber-500:#f59e0b;
  --amber-600:#d97706;
  --slate-50:#f8fafc;
  --slate-100:#f1f5f9;
  --slate-200:#e2e8f0;
  --slate-500:#64748b;
  --slate-700:#334155;
  --slate-900:#0f172a;
  --green-600:#16a34a;
  --green-700:#15803d;
  --green-50:#f0fdf4;
  --red-600:#dc2626;
  --red-50:#fef2f2;
  --amber-50:#fffbeb;
  --radius:12px;
  --shadow:0 1px 3px rgba(8,22,39,.08),0 4px 14px rgba(8,22,39,.08);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--slate-900);background:var(--slate-50);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--navy-800)}
.container{max-width:1080px;margin:0 auto;padding:0 1.1rem}

/* Header */
.site-header{background:var(--navy-950);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.25)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;min-height:60px}
.brand{color:#fff;text-decoration:none;font-weight:800;font-size:1.35rem;letter-spacing:-.02em}
.brand span{color:var(--amber-400)}
.main-nav{display:flex;gap:.25rem}
.main-nav a{color:#cbd5e1;text-decoration:none;font-size:.92rem;padding:.5rem .7rem;border-radius:8px}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(255,255,255,.08)}
@media(max-width:640px){
  .main-nav a{font-size:.8rem;padding:.45rem .45rem}
  .brand{font-size:1.1rem}
}

/* Hero */
.hero{background:linear-gradient(135deg,var(--navy-950) 0%,var(--navy-800) 60%,#1a3f6b 100%);color:#fff;padding:3rem 0 2.5rem;position:relative;overflow:hidden}
.hero h1{font-size:clamp(1.7rem,5vw,2.7rem);line-height:1.15;letter-spacing:-.02em;margin-bottom:.6rem}
.hero h1 .hl{color:var(--amber-400)}
.hero p.lead{color:#cbd5e1;font-size:1.05rem;max-width:36rem}
.hero-stats{display:flex;gap:1.5rem;margin-top:1.4rem;flex-wrap:wrap}
.hero-stats div strong{display:block;font-size:1.4rem;color:var(--amber-400)}
.hero-stats div span{font-size:.82rem;color:#94a3b8}

/* Cards & sections */
.section{padding:2.2rem 0}
.section h2{font-size:1.45rem;letter-spacing:-.01em;margin-bottom:.4rem}
.section .sub{color:var(--slate-500);margin-bottom:1.2rem;max-width:44rem}
.card{background:#fff;border:1px solid var(--slate-200);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.4rem;margin-bottom:1.2rem}
.grid{display:grid;gap:1rem}
@media(min-width:700px){.grid.cols-2{grid-template-columns:1fr 1fr}.grid.cols-3{grid-template-columns:repeat(3,1fr)}}

/* Checker widget */
.checker{background:#fff;border:1px solid var(--slate-200);border-radius:16px;box-shadow:var(--shadow);padding:1.5rem;margin-top:-1rem;position:relative}
.checker h2{margin-bottom:1rem}
.field{margin-bottom:1rem}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.35rem}
.field select,.field input{width:100%;padding:.7rem .8rem;border:1.5px solid var(--slate-200);border-radius:10px;font-size:1rem;background:#fff;font-family:inherit}
.field select:focus,.field input:focus{outline:none;border-color:var(--amber-500);box-shadow:0 0 0 3px rgba(245,158,11,.18)}
.btn{display:inline-block;background:var(--amber-500);color:var(--navy-950);font-weight:700;border:none;border-radius:10px;padding:.8rem 1.6rem;font-size:1rem;cursor:pointer;font-family:inherit;transition:transform .06s ease,background .15s}
.btn:hover{background:var(--amber-400)}
.btn:active{transform:scale(.98)}
.btn-block{width:100%}
.verdict{border-radius:12px;padding:1.1rem 1.2rem;margin-top:1.1rem;display:none}
.verdict.show{display:block}
.verdict.ok{background:var(--green-50);border:1.5px solid #bbf7d0}
.verdict.warn{background:var(--amber-50);border:1.5px solid #fde68a}
.verdict.bad{background:var(--red-50);border:1.5px solid #fecaca}
.verdict h3{font-size:1.1rem;margin-bottom:.35rem}
.verdict.ok h3{color:var(--green-700)}
.verdict.warn h3{color:#b45309}
.verdict.bad h3{color:var(--red-600)}
.verdict ul{margin:.5rem 0 0 1.1rem;font-size:.94rem}
.disclaimer{font-size:.82rem;color:var(--slate-500);background:var(--slate-100);border-radius:10px;padding:.7rem .9rem;margin-top:1rem}

/* Tables */
.table-wrap{overflow-x:auto;border:1px solid var(--slate-200);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:560px}
thead th{background:var(--navy-900);color:#fff;text-align:left;padding:.7rem .8rem;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
tbody td{padding:.65rem .8rem;border-top:1px solid var(--slate-200)}
tbody tr:nth-child(even){background:var(--slate-50)}
tbody tr:hover{background:#eef4ff}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
a.rowlink{font-weight:600;color:var(--navy-800);text-decoration:none}
a.rowlink:hover{text-decoration:underline}

/* Spec list (model pages) */
.specs{display:grid;gap:.6rem;margin:1rem 0}
@media(min-width:640px){.specs{grid-template-columns:1fr 1fr}}
.spec{background:var(--slate-50);border:1px solid var(--slate-200);border-radius:10px;padding:.8rem 1rem}
.spec .k{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--slate-500)}
.spec .v{font-size:1.35rem;font-weight:800;color:var(--navy-900)}
.spec .v small{font-size:.85rem;font-weight:500;color:var(--slate-500)}

/* FAQ */
.faq{border:1px solid var(--slate-200);border-radius:10px;margin-bottom:.7rem;background:#fff;overflow:hidden}
.faq summary{cursor:pointer;padding:.9rem 1.1rem;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--amber-600);font-size:1.3rem;line-height:1}
.faq[open] summary::after{content:"–"}
.faq .a{padding:0 1.1rem 1rem;color:var(--slate-700)}

/* Prose */
.prose h2{margin:1.6rem 0 .5rem;font-size:1.3rem}
.prose h3{margin:1.2rem 0 .4rem;font-size:1.1rem}
.prose p{margin-bottom:.9rem;color:var(--slate-700)}
.prose ul,.prose ol{margin:0 0 1rem 1.3rem;color:var(--slate-700)}
.prose li{margin-bottom:.35rem}

/* Guide cards */
.guide-card{display:block;background:#fff;border:1px solid var(--slate-200);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem;text-decoration:none;color:inherit;transition:transform .1s ease}
.guide-card:hover{transform:translateY(-2px)}
.guide-card h3{color:var(--navy-800);margin-bottom:.3rem;font-size:1.05rem}
.guide-card p{font-size:.9rem;color:var(--slate-500)}

/* Breadcrumb */
.crumbs{font-size:.83rem;color:var(--slate-500);margin:1rem 0 .4rem}
.crumbs a{color:var(--slate-500);text-decoration:none}
.crumbs a:hover{text-decoration:underline}

/* Footer */
.site-footer{background:var(--navy-950);color:#94a3b8;margin-top:2.5rem;padding:2.2rem 0 1.4rem;font-size:.88rem}
.site-footer a{color:#cbd5e1;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.foot-grid{display:grid;gap:1.4rem;margin-bottom:1.4rem}
@media(min-width:700px){.foot-grid{grid-template-columns:2fr 1fr 1fr}}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:.6rem}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:.35rem}
.foot-legal{border-top:1px solid rgba(255,255,255,.1);padding-top:1rem;font-size:.8rem;color:#64748b}

/* Ad slot markers (visual, subtle) */
.ad-slot{border:1.5px dashed var(--slate-200);border-radius:10px;color:var(--slate-500);font-size:.78rem;text-align:center;padding:.9rem;margin:1.2rem 0;background:repeating-linear-gradient(45deg,#fafafa,#fafafa 10px,#f5f5f5 10px,#f5f5f5 20px)}

/* Winner badge */
.badge{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;background:var(--green-600);color:#fff;border-radius:999px;padding:.18rem .65rem;vertical-align:middle}
.compare-table td.winner{background:#f0fdf4;font-weight:700}

/* VIN lookup */
.match-list{margin:.6rem 0 0 1.1rem;font-size:.95rem}
.match-list li{margin:.35rem 0}
.vin-form{display:flex;gap:.6rem;flex-wrap:wrap;margin:1rem 0}
.vin-form input{flex:1 1 16rem;text-transform:uppercase;letter-spacing:.08em}