*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
    :root{
      --black:#000;--white:#fff;--offwhite:#F8F8F6;
      --g1:#B0B0B0;--g2:#777;--g3:#444;--g4:#222;--g5:#E8E8E8;
      --green:#2AFF00;--blue:#38618C;
      --fh:'Outfit',sans-serif;--fb:'Inter',sans-serif;--fn:'Exo 2',sans-serif;
    }
    html{font-size:16px;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
    body{font-family:var(--fb);background:var(--white);color:var(--black);overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}

    /* ════ NAV ════ */
    .nav{
      position:fixed;top:0;left:0;right:0;z-index:100;
      display:flex;align-items:center;justify-content:space-between;
      padding:0 clamp(20px,3vw,40px);height:56px;
      background:rgba(255,255,255,.92);
      backdrop-filter:blur(16px) saturate(180%);
      -webkit-backdrop-filter:blur(16px) saturate(180%);
      border-bottom:1px solid var(--g5);
    }
    .nav-logo{font-family:var(--fh);font-weight:800;font-size:1.15rem;letter-spacing:-.02em;color:var(--black)}
    .nav-links{display:flex;gap:clamp(24px,3vw,40px);list-style:none}
    .nav-links a{font-family:var(--fh);font-size:.78rem;font-weight:500;color:var(--g3);letter-spacing:.01em;transition:color .2s}
    .nav-links a:hover{color:var(--black)}

    /* ════ HERO — COROS-style split: image left, text right ════ */
    .blog-hero{
      margin-top:56px;
      display:grid;
      grid-template-columns:1fr 1fr;
      min-height:calc(100vh - 56px);
      max-height:800px;
    }
    .blog-hero-img{
      position:relative;overflow:hidden;
      background:var(--offwhite);
    }
    .blog-hero-img img{
      width:100%;height:100%;object-fit:cover;
    }
    .blog-hero-text{
      display:flex;flex-direction:column;justify-content:center;
      padding:clamp(40px,6vw,80px) clamp(32px,5vw,72px);
      max-width:640px;
    }
    .blog-hero-category{
      display:flex;align-items:center;gap:10px;
      font-family:var(--fh);font-size:.72rem;font-weight:700;
      letter-spacing:.12em;text-transform:uppercase;color:var(--black);
      margin-bottom:clamp(20px,3vh,36px);
    }
    .blog-hero-category::before{
      content:'';display:block;width:3px;height:16px;
      background:var(--green);border-radius:1px;flex-shrink:0;
    }
    .blog-hero-title{
      font-family:var(--fh);
      font-size:clamp(2rem,4vw,3.2rem);
      font-weight:800;letter-spacing:-.04em;
      line-height:1.08;color:var(--black);
      margin-bottom:clamp(16px,2.5vh,28px);
    }
    .blog-hero-subtitle{
      font-family:var(--fb);font-size:.95rem;font-weight:400;
      color:var(--g2);line-height:1.55;
      margin-bottom:clamp(24px,3.5vh,40px);
    }
    .blog-hero-divider{
      width:100%;max-width:360px;height:1px;background:var(--g5);
      margin-bottom:clamp(16px,2vh,24px);
    }
    .blog-hero-meta{
      font-family:var(--fb);font-size:.82rem;color:var(--g2);letter-spacing:.01em;
    }

    @media(max-width:900px){
      .blog-hero{grid-template-columns:1fr;max-height:none}
      .blog-hero-img{aspect-ratio:16/10;max-height:50vh}
      .blog-hero-text{max-width:none;padding:clamp(32px,5vw,48px) clamp(20px,3vw,32px)}
    }

    /* ════ ARTICLE BODY ════ */
    .article{
      max-width:740px;margin:0 auto;
      padding:clamp(48px,7vh,80px) clamp(20px,3vw,40px) clamp(60px,8vh,100px);
    }

    .article p{
      font-family:var(--fb);font-size:.92rem;color:var(--g3);
      line-height:1.75;margin-bottom:20px;
    }

    .article h2{
      font-family:var(--fh);font-size:clamp(1.4rem,2.5vw,1.8rem);
      font-weight:800;letter-spacing:-.03em;color:var(--black);
      line-height:1.15;margin:clamp(40px,6vh,64px) 0 16px;
    }

    .article h3{
      font-family:var(--fh);font-size:1.1rem;font-weight:700;
      letter-spacing:-.02em;color:var(--black);
      margin:32px 0 12px;
    }

    .article strong{color:var(--black);font-weight:600}

    .article a{
      color:var(--black);border-bottom:1px solid var(--g5);
      transition:border-color .2s;
    }
    .article a:hover{border-color:var(--black)}

    .article hr{
      border:none;height:1px;background:var(--g5);margin:clamp(36px,5vh,56px) 0;
    }

    .article blockquote{
      margin:24px 0;padding:20px 24px;
      border-left:3px solid var(--green);
      background:var(--offwhite);border-radius:0 6px 6px 0;
      font-family:var(--fb);font-style:italic;
      font-size:.88rem;color:var(--g3);line-height:1.7;
    }

    .article ul,.article ol{
      margin:12px 0 20px 20px;
      font-family:var(--fb);font-size:.92rem;color:var(--g3);line-height:1.75;
    }
    .article li{margin-bottom:6px;padding-left:4px}
    .article li::marker{color:var(--g2)}

    /* Formula card */
    .formula-card{
      background:var(--offwhite);border:1px solid var(--g5);border-radius:8px;
      padding:clamp(20px,3vw,28px);margin:24px 0;
    }
    .formula-label{
      font-family:var(--fh);font-size:.65rem;font-weight:700;
      letter-spacing:.1em;text-transform:uppercase;color:var(--g2);margin-bottom:10px;
    }
    .formula-text{
      font-family:var(--fn);font-size:clamp(.95rem,1.5vw,1.15rem);font-weight:600;
      color:var(--black);line-height:1.5;letter-spacing:.01em;
    }
    .formula-note{
      font-family:var(--fb);font-size:.8rem;color:var(--g2);margin-top:10px;line-height:1.6;
    }

    /* Insight card */
    .insight-card{
      background:var(--offwhite);border:1px solid var(--g5);border-radius:8px;
      padding:clamp(20px,3vw,28px);margin:28px 0;
    }
    .insight-title{
      font-family:var(--fh);font-size:.82rem;font-weight:700;color:var(--black);margin-bottom:6px;
    }
    .insight-text{
      font-family:var(--fb);font-size:.85rem;color:var(--g3);line-height:1.65;
    }

    /* ════ SHARE ROW ════ */
    .share-row{
      max-width:740px;margin:0 auto;
      padding:0 clamp(20px,3vw,40px) clamp(40px,5vh,56px);
      display:flex;align-items:center;justify-content:space-between;
      border-top:1px solid var(--g5);padding-top:24px;
    }
    .share-label{
      font-family:var(--fh);font-size:.78rem;font-weight:500;color:var(--g2);
    }
    .share-icons{display:flex;gap:10px}
    .share-icon{
      width:36px;height:36px;border-radius:6px;background:var(--offwhite);
      border:1px solid var(--g5);display:flex;align-items:center;justify-content:center;
      cursor:pointer;transition:border-color .2s;
    }
    .share-icon:hover{border-color:var(--g2)}
    .share-icon svg{width:16px;height:16px;fill:var(--g3)}
    .share-icon:hover svg{fill:var(--black)}

    /* ════ RELATED STORIES ════ */
    .related{
      max-width:1400px;margin:0 auto;
      padding:clamp(40px,6vh,72px) clamp(20px,3vw,40px) clamp(60px,8vh,100px);
      border-top:1px solid var(--g5);
    }
    .related-label{
      font-family:var(--fh);font-size:.78rem;font-weight:500;color:var(--g2);margin-bottom:12px;
    }
    .related-heading{
      font-family:var(--fh);font-size:clamp(1.4rem,2.5vw,2rem);font-weight:800;
      letter-spacing:-.03em;margin-bottom:clamp(28px,4vh,48px);
    }
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .related-card{
      background:var(--offwhite);border:1px solid var(--g5);border-radius:12px;
      overflow:hidden;transition:border-color .3s;text-decoration:none;color:inherit;
    }
    .related-card:hover{border-color:var(--g2)}
    .related-card-img{
      width:100%;aspect-ratio:16/10;background:#eee;
      display:flex;align-items:center;justify-content:center;overflow:hidden;
    }
    .related-card-img img{width:100%;height:100%;object-fit:cover}
    .related-card-img span{
      font-family:var(--fh);font-size:.7rem;font-weight:600;color:var(--g2);
      text-transform:uppercase;letter-spacing:.1em;
    }
    .related-card-body{padding:20px}
    .related-card-tag{
      font-family:var(--fh);font-size:.6rem;font-weight:600;color:var(--black);
      text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;
    }
    .related-card-h{
      font-family:var(--fh);font-size:1rem;font-weight:700;letter-spacing:-.01em;
      margin-bottom:8px;line-height:1.3;color:var(--black);
    }
    .related-card-p{
      font-family:var(--fb);font-size:.8rem;color:var(--g3);line-height:1.5;
    }
    @media(max-width:768px){.related-grid{grid-template-columns:1fr}}

    /* ════ BACK CTA ════ */
    .back-cta{text-align:center;padding-bottom:clamp(48px,6vh,80px)}
    .back-cta a{
      display:inline-flex;align-items:center;gap:6px;
      font-family:var(--fh);font-size:.78rem;font-weight:600;
      letter-spacing:.06em;text-transform:uppercase;
      color:var(--g3);padding:12px 28px;
      border:1px solid var(--g5);border-radius:6px;transition:all .2s;
    }
    .back-cta a:hover{border-color:var(--g2);color:var(--black)}

    /* ════ FOOTER ════ */
    .footer{background:var(--white);color:var(--black);padding:0 clamp(20px,3vw,40px) clamp(32px,4vh,48px)}
    .footer-grid{
      display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:24px;
      padding-top:24px;border-top:1px solid var(--g5);
    }
    .footer-col-head{font-family:var(--fh);font-size:.82rem;font-weight:600;margin-bottom:20px}
    .footer-col a,.footer-col span{
      display:block;font-family:var(--fb);font-size:.78rem;color:var(--g3);
      margin-bottom:6px;transition:color .2s;
    }
    .footer-col a:hover{color:var(--black)}
    .footer-clock{font-family:var(--fn);font-size:.78rem;color:var(--g3)}
    @media(max-width:600px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}

    /* ════ MOBILE NAV ════ */
    .hb{display:none;position:fixed;top:14px;right:20px;z-index:102;cursor:pointer;width:28px;height:28px;flex-direction:column;justify-content:center;gap:5px;align-items:flex-end}
    .hb span{display:block;height:2px;background:var(--black);border-radius:1px;transition:all .3s cubic-bezier(.16,1,.3,1)}
    .hb span:nth-child(1){width:22px}.hb span:nth-child(2){width:16px}.hb span:nth-child(3){width:22px}
    .hb.open span:nth-child(1){transform:rotate(45deg) translate(2.5px,4.5px)}
    .hb.open span:nth-child(2){opacity:0}
    .hb.open span:nth-child(3){transform:rotate(-45deg) translate(2.5px,-4.5px)}
    .mob{position:fixed;inset:0;z-index:99;background:var(--white);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:24px;opacity:0;pointer-events:none;transition:opacity .4s}
    .mob.open{opacity:1;pointer-events:all}
    .mob a{font-family:var(--fh);font-size:clamp(2rem,7vw,3.5rem);font-weight:800;letter-spacing:-.03em;color:var(--g2);transition:color .2s}
    .mob a:hover{color:var(--black)}
    @media(max-width:768px){.hb{display:flex}.nav-links{display:none}}