*{margin:0;padding:0;box-sizing:border-box}
  :root{
    --red:#e11d2e; --red-dark:#b3121f;
    --ink:#14161a; --muted:#5c6470;
    --bg:#f6f7f9; --card:#fff; --line:#e6e9ee;
    --dark:#0c0e12;
  }
  html{scroll-behavior:smooth}
  body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75}
  .container{max-width:1400px;margin:0 auto;padding:0 22px}
  a{color:var(--red);text-decoration:none}
  a:hover{text-decoration:underline}
  img{max-width:100%;display:block}

  /* ---------- Reading progress ---------- */
  #progressBar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--red);z-index:100}

  

  /* ---------- Breadcrumb ---------- */
  .crumbs{padding:22px 0 6px;font-size:13px;color:var(--muted)}
  .crumbs a{color:var(--muted)}
  .crumbs span{margin:0 7px;color:#c1c7d0}
  .crumbs em{font-style:normal;color:var(--ink);font-weight:600}

  /* ---------- Post header ---------- */
  .post-head{text-align:center;max-width:820px;margin:14px auto 26px}
  .post-cat{display:inline-block;background:rgba(225,29,46,.1);color:var(--red);font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;border:1px solid rgba(225,29,46,.3);border-radius:999px;padding:6px 14px;margin-bottom:16px}
  .post-title{font-family:'Oswald',sans-serif;font-size:clamp(28px,4.6vw,42px);line-height:1.2;font-weight:700}
  .post-meta{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:16px;font-size:14px;color:var(--muted)}
  .avatar{width:34px;height:34px;border-radius:50%;background:var(--dark);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:800}
  .dot{color:#c1c7d0}

  /* ---------- Hero banner (replace with real image) ---------- */
  .post-hero{margin:0 0 34px}
  .hero-banner{position:relative;overflow:hidden;background:radial-gradient(900px 300px at 50% -50px,rgba(225,29,46,.28),transparent),var(--dark);color:#fff;border-radius:16px;padding:54px 24px;text-align:center}
  .hero-banner::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(115deg,transparent 0 90px,rgba(225,29,46,.12) 90px 150px)}
  .hero-kicker{position:relative;letter-spacing:4px;font-size:12px;color:#9aa3af;font-weight:600}
  .hero-banner strong{position:relative;display:block;font-family:'Oswald',sans-serif;font-size:clamp(28px,5vw,46px);line-height:1.12;margin:12px 0 16px}
  .hero-banner strong b{color:var(--red)}
  .hero-tag{position:relative;display:inline-block;background:var(--red);border-radius:6px;padding:7px 16px;font-size:12px;font-weight:700;letter-spacing:2.5px}
  .hero-cars{position:relative;display:block;font-size:32px;margin-top:18px;letter-spacing:10px}

  /* ---------- Layout: content + TOC ---------- */
  .post-layout{display:grid;gap:40px;align-items:start}
  .toc-wrap{position:sticky;top:88px}
  .toc{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 18px;box-shadow:0 4px 18px rgba(20,22,26,.05)}
  .toc h3{font-size:13px;text-transform:uppercase;letter-spacing:1.5px;color:var(--muted);margin-bottom:12px}
  .toc a{display:block;color:var(--muted);font-size:13.5px;font-weight:500;padding:7px 10px;border-left:2px solid var(--line);border-radius:0 6px 6px 0}
  .toc a:hover{color:var(--ink);text-decoration:none}
  .toc a.active{color:var(--red);border-left-color:var(--red);background:rgba(225,29,46,.06);font-weight:600}

  /* ---------- Article content ---------- */
  .post-content{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:clamp(24px,4vw,48px);box-shadow:0 4px 18px rgba(20,22,26,.05);margin:10px;}
  .post-content p{margin:0 0 16px;color:#333a45;font-size:16px}
  .post-content p.lead{font-size:18.5px;color:var(--ink);font-weight:500}
  .post-content h2{font-family:'Oswald',sans-serif;font-size:25px;font-weight:600;margin:40px 0 14px;padding-left:14px;border-left:4px solid var(--red);line-height:1.3;scroll-margin-top:95px}
  .post-content ul{list-style:none;margin:6px 0 20px}
  .post-content ul li{position:relative;padding-left:28px;margin:9px 0;color:#333a45}
  .post-content ul li::before{content:"";position:absolute;left:4px;top:10px;width:9px;height:5px;border-left:2.5px solid var(--red);border-bottom:2.5px solid var(--red);transform:rotate(-45deg)}
  ul.chips{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0}
  ul.chips li{padding:8px 16px !important;background:var(--bg);border:1px solid var(--line);border-radius:999px;font-weight:600;font-size:14px;color:var(--ink)}
  ul.chips li::before{content:none}

  /* --- Custom Article Hero Image --- */
  .post-content .article-hero-img {
    width: 100%;
    height: auto;
    max-height: 460px;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 34px;
    box-shadow: 0 12px 30px rgba(20,22,26,.08);
    transition: transform 0.4s ease;
  }
  .post-content .article-hero-img:hover {
    transform: scale(1.01);
  }

  /* ---------- CTA card ---------- */
  .cta-card{margin-top:44px;background:radial-gradient(600px 200px at 20% -40px,rgba(225,29,46,.35),transparent),var(--dark);border-radius:16px;padding:34px 30px;color:#fff;text-align:center}
  .cta-card h3{font-family:'Oswald',sans-serif;font-size:24px;margin-bottom:8px}
  .cta-card p{color:#c4cbd6 !important;margin-bottom:20px}
  .cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

  /* ---------- Share ---------- */
  .share-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}
  .share-row span{font-size:14px;font-weight:700;margin-right:4px}
  .share-btn{width:40px;height:40px;border-radius:50%;background:var(--bg);border:1px solid var(--line);display:grid;place-items:center;color:var(--ink);transition:.2s}
  .share-btn:hover{background:var(--red);border-color:var(--red);color:#fff;text-decoration:none;transform:translateY(-2px)}
  .share-btn svg{width:17px;height:17px;fill:currentColor}

  /* ---------- Related posts ---------- */
  .related{padding:60px 0 70px}
  .related h2{font-family:'Oswald',sans-serif;font-size:26px;margin-bottom:24px}
  .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .rel-card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s;color:inherit}
  .rel-card:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(20,22,26,.1);text-decoration:none}
  .rel-thumb{height:150px;display:grid;place-items:center;font-size:44px}
  .rel-body{padding:18px}
  .rel-body h3{font-size:15.5px;line-height:1.45;margin-bottom:8px}
  .rel-body small{color:var(--muted);font-size:12.5px}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--dark);color:#aab3bf;padding:52px 0 26px;font-size:14px}
  .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:34px;margin-bottom:36px}
  .site-footer h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:14px}
  .site-footer a{color:#aab3bf;display:block;margin:6px 0}
  .site-footer a:hover{color:#fff}
  .footer-bottom{border-top:1px solid #23262c;padding-top:20px;text-align:center;font-size:13px;color:#7b8492}

  #toTop{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;border:none;background:var(--red);color:#fff;font-size:19px;cursor:pointer;opacity:0;pointer-events:none;transition:.25s;box-shadow:0 8px 20px rgba(225,29,46,.4);z-index:80}
  #toTop.show{opacity:1;pointer-events:auto}