/* ===== TOKENS ===== */
:root {
  --red:       #E60028;
  --red-dark:  #CC001F;
  --red-light: #FFF5F6;
  --bg:        #FFFFFF;
  --surface:   #FFFFFF;
  --warm:      #F5F5F5;
  --text:      #0A0A0A;
  --muted:     #555555;
  --border:    #D8D8D8;
  --nav-h:     68px;
  --shadow:    0 1px 3px rgba(0,0,0,.06);
  --shadow-lg: 0 2px 10px rgba(0,0,0,.08);
}

/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Heebo',sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* ===== LAYOUT ===== */
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.page-body{padding-top:calc(var(--nav-h) + 3px)}

/* ===== TOP BAR ===== */
.top-bar{background:var(--red);height:4px;width:100%;position:fixed;top:0;z-index:200}

/* ===== NAV ===== */
nav{position:fixed;top:3px;left:0;right:0;z-index:100;height:var(--nav-h);background:var(--surface);border-bottom:1px solid var(--border);transition:border-color .2s}
nav.scrolled{border-bottom-color:#B0B0B0}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between;gap:32px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:36px;height:36px;display:flex;align-items:center;justify-content:center}
.logo-text{font-size:15px;font-weight:600;color:var(--text)}
.logo-text span{color:var(--muted);font-weight:400}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-links a,.nav-links button{font-size:13.5px;font-weight:400;color:var(--muted);padding:8px 12px;transition:color .15s;white-space:nowrap;display:flex;align-items:center;gap:4px;border:none;background:none}
.nav-links a:hover,.nav-links button:hover{color:var(--text)}
.nav-links a.active{font-weight:600;color:var(--text)}
.nav-cta{background:var(--red)!important;color:#fff!important;padding:8px 20px!important;font-weight:500!important}
.nav-cta:hover{background:var(--red-dark)!important;color:#fff!important}
.dropdown{position:relative}
.dropdown-menu{position:absolute;top:calc(100% + 1px);right:0;background:var(--surface);border:1px solid var(--border);box-shadow:0 4px 16px rgba(0,0,0,.08);min-width:220px;padding:4px 0;opacity:0;pointer-events:none;transform:translateY(-4px);transition:opacity .12s,transform .12s;z-index:200}
.dropdown:hover .dropdown-menu{opacity:1;pointer-events:all;transform:translateY(0)}
.dropdown-menu a{display:block;padding:11px 20px;font-size:13.5px;color:var(--muted)}
.dropdown-menu a:hover{background:var(--warm);color:var(--text)}
.chevron{font-size:10px;transition:transform .15s}
.dropdown:hover .chevron{transform:rotate(180deg)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;font-size:14px;font-weight:500;transition:background .15s;cursor:pointer;font-family:'Heebo',sans-serif;width:100%;border-radius:0}
.btn-primary{background:var(--red);color:#fff;border:none}
.btn-primary:hover{background:var(--red-dark)}

/* ===== FLOATING SOCIAL ===== */
.social-float{position:fixed;left:0;top:50%;transform:translateY(-50%);z-index:200;display:flex;flex-direction:column}
.social-float a{display:flex;align-items:center;width:42px;height:42px;background:#1A1A1A;color:#fff;font-size:11px;font-weight:700;justify-content:center;transition:width .2s,background .15s;overflow:hidden;white-space:nowrap;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.08)}
.social-float a:hover{width:90px;background:var(--red)}
.social-float a .sf-label{display:none;font-size:10px;margin-right:6px}
.social-float a:hover .sf-label{display:inline}
.social-float a:first-child{border-top:1px solid rgba(255,255,255,.08)}

/* ===== POST HERO ===== */
.post-hero{background:var(--surface);padding:48px 0 40px;border-bottom:2px solid var(--border)}
.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:16px;display:flex;align-items:center;gap:6px}
.breadcrumb a{color:var(--muted);transition:color .15s}
.breadcrumb a:hover{color:var(--red)}
.post-hero h1{font-size:clamp(26px,4vw,44px);font-weight:700;line-height:1.15;letter-spacing:-.3px;max-width:780px;margin-bottom:20px}
.post-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);font-weight:500;letter-spacing:.04em;text-transform:uppercase}
.post-meta-cat{color:var(--red);font-weight:700}
.dot{color:var(--border)}

/* ===== COVER IMAGE ===== */
.post-cover{width:100%;max-height:480px;object-fit:cover;display:block;border-bottom:1px solid var(--border)}

/* ===== CONTENT LAYOUT ===== */
.post-layout{display:grid;grid-template-columns:1fr 300px;gap:64px;align-items:start;padding:56px 0 80px}

/* ===== POST CONTENT ===== */
.post-content p{font-size:16px;line-height:1.9;color:var(--muted);margin-bottom:24px;text-align:justify}
.post-content h2{font-size:clamp(20px,2.5vw,28px);font-weight:700;margin:40px 0 16px;color:var(--text);letter-spacing:-.2px;text-align:justify}
.post-content h3{font-size:clamp(17px,2vw,22px);font-weight:600;margin:32px 0 12px;color:var(--text);text-align:justify}
.post-content ul{margin:0 0 24px 0;display:flex;flex-direction:column;gap:10px}
.post-content li{font-size:15.5px;line-height:1.75;color:var(--muted);padding-right:16px;border-right:2px solid var(--red);list-style:none}
.post-content blockquote{border-right:3px solid var(--red);padding:16px 20px 16px 16px;margin:28px 0;background:var(--warm);font-style:italic;color:var(--muted);font-size:15px;line-height:1.75;border-top:none;border-bottom:none;border-left:none}
.post-content blockquote strong{font-style:normal;color:var(--text)}
.post-content strong{color:var(--text);font-weight:600}
.post-content a{color:var(--red);text-decoration:underline;text-underline-offset:3px}
.post-content code{background:var(--warm);padding:2px 6px;font-family:monospace;font-size:13px;border:1px solid var(--border)}
.post-content hr{border:none;border-top:1px solid var(--border);margin:32px 0}

/* ===== POST NAV ===== */
.post-tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:40px;padding-top:32px;border-top:1px solid var(--border)}
.post-tag{padding:6px 14px;background:var(--warm);border:1px solid var(--border);font-size:12px;font-weight:500;color:var(--muted)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--border);margin-top:40px}
.post-nav-item{padding:22px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit;border-right:1px solid var(--border);transition:background .15s}
.post-nav-item:last-child{border-right:none}
.post-nav-item:hover{background:var(--warm)}
.post-nav-empty{background:var(--warm);opacity:.3}
.post-nav-label{font-size:10px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--red)}
.post-nav-title{font-size:13.5px;font-weight:600;line-height:1.4;color:var(--text)}

/* ===== SIDEBAR ===== */
.post-sidebar{position:sticky;top:calc(var(--nav-h) + 24px);display:flex;flex-direction:column;gap:20px}
.sidebar-card{border:1px solid var(--border);padding:24px;background:var(--surface)}
.sidebar-card h4{font-size:10.5px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--text);margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.sidebar-card p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.sidebar-cta{border-right:3px solid var(--red)}
.sidebar-avatar{width:56px;height:56px;background:var(--warm);border:1px solid var(--border);margin-bottom:14px;border-radius:0}
.related-link{display:block;font-size:13px;color:var(--muted);margin-bottom:12px;line-height:1.4;padding-bottom:12px;border-bottom:1px solid var(--border);transition:color .15s}
.related-link:last-of-type{margin-bottom:16px}
.related-link:hover{color:var(--red)}
.all-posts-link{font-size:12px;font-weight:700;color:var(--red);display:block;margin-top:4px}

/* ===== FOOTER ===== */
footer{background:#F0F0F0;color:#333;padding:56px 0 24px;border-top:3px solid #0A0A0A}
.footer-grid{display:grid;grid-template-columns:240px 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid #C8C8C8}
.footer-brand p{font-size:13px;color:#666;margin-top:12px;line-height:1.7}
.footer-col h5{font-size:10.5px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:#0A0A0A;margin-bottom:18px}
.footer-col a{display:block;font-size:13px;color:#555;margin-bottom:10px;transition:color .15s}
.footer-col a:hover{color:#0A0A0A}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;font-size:11.5px;color:#888;flex-wrap:wrap;gap:12px}
.social-links{display:flex;gap:8px}
.social-link{width:32px;height:32px;background:#E0E0E0;border:1px solid #C0C0C0;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;transition:background .15s,color .15s;color:#555}
.social-link:hover{background:var(--red);border-color:var(--red);color:#fff}

/* ===== MOBILE ===== */
@media(max-width:1000px){
  .post-layout{grid-template-columns:1fr;gap:40px}
  .post-sidebar{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}
@media(max-width:600px){
  .container{padding:0 16px}
  .post-hero{padding:32px 0 28px}
  .post-nav{grid-template-columns:1fr}
  .post-nav-item{border-right:none;border-bottom:1px solid var(--border)}
  .footer-grid{grid-template-columns:1fr}
  .social-float{display:none}
}