/* Nav */
    .nav-link-qcm{font-family:var(--font-display);font-size:14px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--text-color);border-bottom:none}

    /* Page */
    .page-header{padding:80px 48px 48px}
    .page-header h1{font-family:var(--font-display);font-size:clamp(36px,5vw,64px);font-weight:700;letter-spacing:-.02em;margin-bottom:16px}
    .page-header p{font-size:clamp(16px,1.2vw,20px);color:var(--muted-color);max-width:65ch}
    .section-bar{padding:16px 48px;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-family:var(--font-display);font-size:14px}
    .post-count{color:var(--muted-color)}
    .login-cta{font-size:14px;color:var(--muted-color)}
    .login-cta a{font-weight:500}

    /* Posts grid */
    .posts-grid{padding:48px;display:grid;grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:32px}
    .post-card{border:1px solid var(--border-color);padding:32px;display:flex;flex-direction:column;gap:12px;transition:border-color .15s}
    .post-card:hover{border-color:var(--accent-color)}
    .post-card h2{font-family:var(--font-display);font-size:20px;font-weight:600;letter-spacing:-.01em;line-height:1.3}
    .post-card h2 a{border-bottom:none}
    .post-meta{font-family:var(--font-display);font-size:13px;color:var(--muted-color);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .post-meta span{white-space:nowrap}
    .badge{display:inline-block;padding:2px 8px;border:1px solid var(--border-color);font-size:12px;font-family:var(--font-display)}
    .post-stats{font-family:var(--font-display);font-size:13px;color:var(--muted-color);display:flex;gap:16px;margin-top:auto;padding-top:12px;border-top:1px solid var(--border-color)}

    /* Post detail */
    .post-detail{padding:48px;max-width:900px;margin:0 auto}
    .back-link{font-family:var(--font-display);font-size:14px;margin-bottom:32px;display:inline-block}
    .detail-header{margin-bottom:48px}
    .detail-header h1{font-family:var(--font-display);font-size:clamp(28px,4vw,48px);font-weight:700;letter-spacing:-.02em;margin-bottom:16px;line-height:1.15}
    .detail-meta{font-family:var(--font-display);font-size:14px;color:var(--muted-color);display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
    .detail-meta a{font-weight:500}
    .tabs{display:flex;gap:0;border-bottom:1px solid var(--border-color);margin-bottom:32px;font-family:var(--font-display)}
    .tab-btn{padding:12px 20px;font-size:14px;background:none;border:none;border-bottom:2px solid transparent;color:var(--muted-color);font-family:var(--font-display)}
    .tab-btn.active{color:var(--text-color);border-bottom-color:var(--accent-color)}
    .card-grid{display:flex;flex-direction:column;gap:24px}
    .card-field h3{font-family:var(--font-display);font-size:13px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted-color);margin-bottom:8px}
    .card-field p{font-size:17px;line-height:1.6}
    .card-field .empty{opacity:.4;font-style:italic}
    .comment-item{padding:16px 0;border-bottom:1px solid var(--border-color)}
    .comment-author{font-family:var(--font-display);font-size:13px;font-weight:500}
    .comment-date{font-family:var(--font-display);font-size:12px;color:var(--muted-color);margin-left:8px}
    .comment-text{margin-top:8px;font-size:16px}
    .history-item{padding:16px 0;border-bottom:1px solid var(--border-color)}
    .history-version{font-family:var(--font-display);font-size:13px;font-weight:600;margin-right:8px}
    .diff-block{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px}
    .diff-old{padding:12px;background:rgba(255,0,0,.05);border-left:3px solid rgba(255,0,0,.3);font-size:15px}
    .diff-new{padding:12px;background:rgba(0,128,0,.05);border-left:3px solid rgba(0,128,0,.3);font-size:15px}
    .diff-label{font-family:var(--font-display);font-size:12px;color:var(--muted-color);margin-bottom:4px;display:block}
    .empty-state{padding:80px 48px;text-align:center;color:var(--muted-color);font-size:18px}
    .loading{padding:80px 48px;text-align:center;color:var(--muted-color);font-family:var(--font-display)}
    .load-more{display:block;margin:0 auto 48px;padding:12px 32px;border:1px solid var(--border-color);background:transparent;color:var(--text-color);font-size:14px;font-family:var(--font-display)}
    .cta-box{margin-top:32px;padding:24px;border:1px solid var(--border-color);text-align:center;font-family:var(--font-display);font-size:15px;color:var(--muted-color)}
    .cta-box a{font-weight:500}

    /* Footer */
    footer{border-top:1px solid var(--border-color);padding:80px 48px}
    .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:80px;margin-bottom:80px}
    .footer-section h3{font-family:var(--font-display);font-size:13px;margin-bottom:24px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted-color)}
    .footer-section p{font-size:16px;line-height:1.6;color:var(--muted-color)}
    .footer-links{display:flex;flex-direction:column;gap:16px}
    .footer-links a{font-size:16px;color:var(--muted-color);border-bottom:none}
    .footer-links a:hover{color:var(--text-color);opacity:1}
    .footer-bottom{padding-top:48px;border-top:1px solid var(--border-color);font-family:var(--font-display);font-size:13px;color:var(--muted-color)}

    @media(max-width:768px){
      .container{padding:0 24px}
      .page-header,.post-detail{padding:48px 24px}
      .posts-grid{padding:24px;grid-template-columns:1fr}
      .section-bar{padding:16px 24px}
      .nav-center{display:none}
      .footer-grid{grid-template-columns:1fr;gap:48px}
      .diff-block{grid-template-columns:1fr}
      footer{padding:48px 24px}
    }