:root {
      --primary: #D80621;
      --secondary: #0EA5E9;
      --trust: #0F766E;
      --warm-bg: #FFF7ED;
      --white: #FFFFFF;
      --light-slate: #F8FAFC;
      --gray-zone: #F1F5F9;
      --text-dark: #111827;
      --text-muted: #475569;
      --text-light: #64748B;
      --border-soft: rgba(15,23,42,.10);
      --shadow-soft: rgba(15,23,42,.05);
    }

    *,*::before,*::after{box-sizing:border-box;}
    html{width:100%;overflow-x:hidden;}
    body{width:100%;margin:0;overflow-x:hidden;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background-color:var(--warm-bg);color:var(--text-dark);line-height:1.5;}
    img{max-width:100%;height:auto;}

    
    .site-header{position:sticky;top:0;z-index:1000;width:100%;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(15,23,42,.10);}
    .header-inner{width:min(1200px, calc(100% - 32px));min-height:72px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px;}
    .logo{display:inline-flex;align-items:center;gap:12px;min-width:0;max-width:100%;text-decoration:none;flex-shrink:0;}
    .logo img{display:block;height:40px;width:auto;max-width:150px;object-fit:contain;flex-shrink:0;}
    .logo span{display:inline-block;font-size:18px;font-weight:800;line-height:1.2;color:#111827;white-space:nowrap;max-width:180px;overflow:hidden;text-overflow:ellipsis;}
    .desktop-nav-wrap{flex:1 1 auto;min-width:0;display:flex;justify-content:flex-end;overflow:hidden;}
    .desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:8px;max-width:100%;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;scrollbar-width:none;white-space:nowrap;}
    .desktop-nav::-webkit-scrollbar{display:none;}
    .desktop-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 13px;border-radius:999px;color:#475569;text-decoration:none;font-size:14px;font-weight:700;line-height:1;white-space:nowrap;flex:0 0 auto;}
    .desktop-nav a:hover{color:#111827;background:rgba(216,6,33,.10);}
    .mobile-menu-btn{display:none;width:44px;height:44px;border:0;border-radius:14px;background:rgba(15,23,42,.06);align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;flex:0 0 auto;}
    .mobile-menu-btn span{display:block;width:20px;height:2px;border-radius:999px;background:#111827;}

    
    .mobile-nav-mask{position:fixed;inset:0;z-index:1100;background:rgba(15,23,42,.38);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s ease, visibility .25s ease;}
    .mobile-drawer{position:fixed;top:0;left:0;z-index:1110;width:min(86vw, 360px);height:100vh;height:100dvh;max-width:90vw;background:#FFFFFF;color:#111827;transform:translateX(-105%);transition:transform .28s ease;box-shadow:24px 0 60px rgba(15,23,42,.18);display:flex;flex-direction:column;overflow:hidden;}
    .drawer-head{min-height:76px;padding:16px 16px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid rgba(15,23,42,.10);flex:0 0 auto;}
    .drawer-logo{min-width:0;}
    .drawer-logo img{height:34px;max-width:120px;}
    .drawer-logo span{font-size:16px;max-width:145px;}
    .drawer-close{width:40px;height:40px;border:0;border-radius:14px;background:rgba(15,23,42,.06);color:#111827;font-size:26px;line-height:1;cursor:pointer;flex:0 0 auto;}
    .drawer-body{flex:1 1 auto;min-height:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding:14px;}
    .drawer-nav{display:flex;flex-direction:column;gap:8px;}
    .drawer-nav a{display:flex;align-items:center;width:100%;min-height:48px;padding:13px 14px;border-radius:14px;background:rgba(15,23,42,.04);color:#111827;text-decoration:none;font-size:15px;font-weight:700;line-height:1.35;white-space:normal;word-break:break-word;overflow-wrap:anywhere;border:1px solid rgba(15,23,42,.10);}
    .drawer-nav a:hover{background:rgba(216,6,33,.10);color:#111827;}
    body.drawer-open{overflow:hidden;touch-action:none;}
    body.drawer-open .mobile-nav-mask{opacity:1;visibility:visible;pointer-events:auto;}
    body.drawer-open .mobile-drawer{transform:translateX(0);}

    
    .article-wrap {
      width: min(800px, calc(100% - 32px));
      margin: 48px auto;
      background: var(--white);
      border-radius: 24px;
      padding: 48px;
      border: 1px solid var(--border-soft);
      box-shadow: 0 10px 30px var(--shadow-soft);
    }
    .breadcrumb {
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 24px;
    }
    .breadcrumb a {
      color: var(--text-muted);
      text-decoration: none;
    }
    .breadcrumb a:hover {
      color: var(--primary);
    }
    .article-h1 {
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 900;
      line-height: 1.2;
      margin: 0 0 20px;
      color: var(--text-dark);
    }
    .article-head-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: var(--text-light);
      padding-bottom: 24px;
      border-bottom: 1px solid var(--gray-zone);
      margin-bottom: 32px;
    }
    .article-body-content {
      line-height: 1.8;
      font-size: 16px;
      color: var(--text-dark);
    }
    .article-body-content p {
      margin-bottom: 24px;
    }
    .article-tags {
      margin-top: 40px;
      padding-top: 24px;
      border-top: 1px solid var(--gray-zone);
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-link {
      padding: 6px 12px;
      background: rgba(14, 165, 233, 0.1);
      color: var(--secondary);
      text-decoration: none;
      border-radius: 6px;
      font-weight: 700;
      font-size: 13px;
    }

    
    .prev-next-section {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      margin-top: 48px;
      padding-top: 24px;
      border-top: 1px solid var(--gray-zone);
    }
    .prev-next-link {
      flex: 1;
      display: flex;
      flex-direction: column;
      text-decoration: none;
    }
    .prev-next-link span {
      font-size: 12px;
      color: var(--text-light);
      text-transform: uppercase;
      margin-bottom: 4px;
    }
    .prev-next-link strong {
      font-size: 15px;
      color: var(--text-dark);
    }
    .prev-next-link strong:hover {
      color: var(--primary);
    }

    
    .related-section {
      width: min(800px, calc(100% - 32px));
      margin: 48px auto;
    }
    .related-title {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .related-card {
      background: var(--white);
      border-radius: 12px;
      padding: 16px;
      border: 1px solid var(--border-soft);
      display: block;
      text-decoration: none;
      color: var(--text-dark);
    }
    .related-card:hover {
      border-color: var(--primary);
    }
    .related-card h4 {
      margin: 0 0 8px;
      font-size: 15px;
      font-weight: 700;
      line-height: 1.4;
    }

    
    .site-footer{position:relative;z-index:1;width:100%;background:#F8FAFC;color:#1F2937;padding:56px 0 24px;overflow:hidden;}
    .footer-inner{width:min(1200px, calc(100% - 32px));margin:0 auto;display:grid;grid-template-columns:minmax(260px,1.35fr) repeat(3, minmax(150px,1fr));gap:28px;align-items:start;}
    .footer-brand{min-width:0;}
    .footer-brand p{margin:16px 0 0;color:#475569;line-height:1.8;font-size:14px;word-break:break-word;overflow-wrap:anywhere;}
    .footer-logo span{color:#111827;}
    .footer-column{min-width:0;}
    .footer-column h3{margin:0 0 14px;font-size:15px;color:#111827;}
    .footer-column ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
    .footer-column li{min-width:0;}
    .footer-column a,.footer-column span{display:inline;color:#475569;text-decoration:none;font-size:14px;line-height:1.55;white-space:normal;word-break:break-word;overflow-wrap:anywhere;}
    .footer-column a:hover{color:#111827;}
    .footer-bottom{width:min(1200px, calc(100% - 32px));margin:32px auto 0;padding-top:20px;border-top:1px solid rgba(15,23,42,.10);display:flex;align-items:center;justify-content:space-between;gap:16px;color:#64748B;font-size:13px;}
    .footer-bottom p{margin:0;min-width:0;word-break:break-word;overflow-wrap:anywhere;}
    .footer-bottom a{color:#475569;text-decoration:none;word-break:break-word;overflow-wrap:anywhere;}

    @media (max-width: 900px){
      .header-inner{width:min(100% - 24px, 1200px);min-height:64px;gap:12px;}
      .desktop-nav-wrap,.desktop-nav{display:none !important;}
      .mobile-menu-btn{display:inline-flex !important;}
      .logo img{height:34px;max-width:118px;}
      .logo span{font-size:16px;max-width:145px;}
      .article-wrap { padding: 24px; }
      .related-grid { grid-template-columns: 1fr; }
      .footer-inner{grid-template-columns:1fr 1fr;gap:24px;}
      .footer-brand{grid-column:1 / -1;}
      .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
    }
    @media (max-width: 640px){
      .footer-inner{grid-template-columns:1fr;}
    }