:root{
  --orange:#f47b20;--black:#111827;--gray:#5f6673;--light:#f7f8fa;
  --line:#e6e8ec;--white:#fff;--green:#178b52;--radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--black);background:var(--white);line-height:1.65}
a{color:inherit}
.container{width:min(1160px,92%);margin:auto}
.topbar{background:#0d1117;color:#fff;font-size:.92rem;padding:.65rem 0}
.topbar .container{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.logo{font-weight:900;font-size:1.45rem;text-decoration:none;letter-spacing:-.04em}
.logo span{color:var(--orange)}
.navlinks{display:flex;align-items:center;gap:1.2rem;flex-wrap:wrap}
.navlinks a{text-decoration:none;font-weight:700;font-size:.95rem}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:.9rem 1.2rem;border-radius:999px;background:var(--orange);color:#111;text-decoration:none;font-weight:900;border:0;box-shadow:0 10px 24px rgba(244,123,32,.22)}
.btn-dark{background:var(--black);color:#fff}
.hero{padding:72px 0 54px;background:linear-gradient(135deg,#fff 0%,#fff7ef 55%,#f4f6f8 100%)}
.eyebrow{display:inline-block;color:#9b4300;background:#fff1e4;border:1px solid #ffd2aa;padding:.35rem .7rem;border-radius:999px;font-weight:800;font-size:.82rem;text-transform:uppercase;letter-spacing:.05em}
h1{font-size:clamp(2.15rem,5vw,4.35rem);line-height:1.03;letter-spacing:-.055em;margin:.9rem 0 1.1rem;max-width:980px}
.hero p{font-size:1.12rem;color:var(--gray);max-width:820px}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.4rem}
.trust{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1.4rem;color:#3c4552;font-weight:700;font-size:.92rem}
.breadcrumbs{padding:1rem 0;font-size:.9rem;color:var(--gray)}
.breadcrumbs a{text-decoration:none}
.main-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;padding:30px 0 70px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 34px rgba(15,23,42,.06)}
.summary{padding:1.4rem;margin-bottom:1.6rem;background:#fbfcfd}
.summary strong{display:block;margin-bottom:.35rem}
h2{font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.15;letter-spacing:-.035em;margin:2.5rem 0 .8rem}
h3{line-height:1.25}
.problem-list{display:grid;gap:.85rem}
.problem{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden}
.problem summary{cursor:pointer;list-style:none;padding:1rem 1.15rem;font-weight:900;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.problem summary::-webkit-details-marker{display:none}
.problem summary::after{content:"+";font-size:1.35rem;color:var(--orange)}
.problem[open] summary::after{content:"–"}
.problem-body{padding:0 1.15rem 1.1rem;color:#3f4855}
.problem-body p{margin:.55rem 0}
.problem-body b{color:#111827}
.cta{padding:1.7rem;margin:2rem 0;background:linear-gradient(135deg,#111827,#242d3c);color:#fff;border-radius:var(--radius)}
.cta h2,.cta h3{margin:.15rem 0 .55rem;color:#fff}
.cta p{color:#d9dee6}
.cta .btn{margin-top:.35rem}
.carcase{padding:1.7rem;border:2px solid #ffc58f;background:#fff9f3;border-radius:var(--radius)}
.carcase ul{columns:2;gap:2rem}
.sidebar{position:relative}
.sticky{position:sticky;top:100px;padding:1.25rem}
.sticky h3{margin-top:0}
.toc{display:grid;gap:.5rem}
.toc a{text-decoration:none;color:#4b5563;font-size:.94rem}
.toc a:hover{color:#bd5200}
.local-box{padding:1.35rem;background:var(--light);border-radius:var(--radius);margin:2rem 0}
.faq{display:grid;gap:.75rem}
.faq details{border:1px solid var(--line);border-radius:12px;padding:.85rem 1rem}
.faq summary{font-weight:900;cursor:pointer}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.related a{padding:1.1rem;text-decoration:none}
.footer{background:#0d1117;color:#dce1e8;padding:42px 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:2rem}
.footer a{color:#fff}
.note{font-size:.86rem;color:#6b7280}
.brand-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;padding:24px 0 70px}
.brand-card{padding:1.3rem;text-decoration:none;transition:.2s}
.brand-card:hover{transform:translateY(-3px);border-color:#ffb16b}
.brand-card h2{font-size:1.25rem;margin:.2rem 0}
@media(max-width:900px){
 .main-grid{grid-template-columns:1fr}
 .sidebar{display:none}
 .related,.brand-grid{grid-template-columns:1fr 1fr}
 .carcase ul{columns:1}
}
@media(max-width:600px){
 .navlinks a:not(.btn){display:none}
 .hero{padding:48px 0 36px}
 .related,.brand-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .btn{width:100%}
}