:root {
      --hyper-primary: #034955;
      --hyper-secondary: #e87706;
      --hyper-success: #0acf97;
      --hyper-info: #034955;
      --hyper-warning: #ffbc00;
      --hyper-danger: #fa5c7c;
      --hyper-dark: #313a46;
      --hyper-light: #eef2f7;
      --hyper-sidebar-bg: #034955;
      --hyper-sidebar-width: 260px;
      --hyper-topbar-height: 70px;
      --hyper-body-bg: #f5f6fa;
      --hyper-card-bg: #fff;
      --hyper-text-muted: #8391a2;
      --hyper-border: #e2e7f1;
      --hyper-font: 'Nunito', sans-serif;
    }

    * { box-sizing: border-box; }

    body {
      font-family: var(--hyper-font);
      background-color: var(--hyper-body-bg);
      color: #6c757d;
      font-size: 0.9rem;
      line-height: 1.6;
    }

    /* ===== SIDEBAR ===== */
    #sidebar {
      position: fixed;
      top: 0; left: 0;
      width: var(--hyper-sidebar-width);
      height: 100vh;
      background: var(--hyper-sidebar-bg);
      overflow-y: auto;
      z-index: 1000;
      transition: transform 0.3s ease;
    }

    #sidebar::-webkit-scrollbar { width: 4px; }
    #sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

    .sidebar-logo {
      padding: 0 24px;
      height: var(--hyper-topbar-height);
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .sidebar-logo .logo-img {
      width:180px;
      height: auto;
    }

    .sidebar-section-label {
      font-size: 0.7rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: rgba(255,255,255,0.3);
      padding: 20px 24px 6px;
    }

    .sidebar-nav { list-style: none; padding: 0; margin: 0; }

    .sidebar-nav a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 9px 24px;
      color: rgba(255,255,255,0.6);
      text-decoration: none;
      font-size: 0.875rem;
      font-weight: 500;
      transition: all 0.2s;
      border-left: 3px solid transparent;
    }

    .sidebar-nav a:hover,
    .sidebar-nav a.active {
      color: #fff;
      background: rgba(255,255,255,0.05);
      border-left-color: var(--hyper-primary);
    }

    .sidebar-nav a i {
      font-size: 1rem;
      width: 20px;
      text-align: center;
      flex-shrink: 0;
    }

    .sidebar-nav .sub-nav { list-style: none; padding: 0; margin: 0; display: none; }
    .sidebar-nav .sub-nav.show { display: block; }
    .sidebar-nav .sub-nav a {
      padding-left: 54px;
      font-size: 0.82rem;
      font-weight: 400;
      border-left: none;
    }
    .sidebar-nav .sub-nav a::before {
      content: '';
      display: inline-block;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: rgba(255,255,255,0.3);
      margin-right: 8px;
      flex-shrink: 0;
    }
    .sidebar-nav .sub-nav a:hover::before,
    .sidebar-nav .sub-nav a.active::before {
      background: var(--hyper-primary);
    }

    .nav-toggle-icon {
      margin-left: auto;
      font-size: 0.75rem;
      transition: transform 0.2s;
    }
    .sidebar-nav a[aria-expanded="true"] .nav-toggle-icon {
      transform: rotate(180deg);
    }

    /* ===== TOPBAR ===== */
    #topbar {
      position: fixed;
      top: 0;
      left: var(--hyper-sidebar-width);
      right: 0;
      height: var(--hyper-topbar-height);
      background: #fff;
      border-bottom: 1px solid var(--hyper-border);
      display: flex;
      align-items: center;
      padding: 0 24px;
      gap: 16px;
      z-index: 999;
      box-shadow: 0 0 35px 0 rgba(49,58,70,0.08);
    }

    .topbar-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--hyper-dark);
      flex: 1;
    }

    .topbar-breadcrumb {
      font-size: 0.8rem;
      color: var(--hyper-text-muted);
    }

    .topbar-breadcrumb a { color: var(--hyper-primary); text-decoration: none; }

    #sidebarToggle {
      background: none; border: none; padding: 4px 8px;
      color: var(--hyper-dark); font-size: 1.25rem; cursor: pointer;
      border-radius: 4px;
    }
    #sidebarToggle:hover { background: var(--hyper-light); }

    /* ===== MAIN CONTENT ===== */
    #main {
      margin-left: var(--hyper-sidebar-width);
      padding-top: var(--hyper-topbar-height);
      min-height: 100vh;
    }

    .page-content { padding: 24px; }

    /* ===== CARDS ===== */
    .card {
      border: none;
      border-radius: 0.5rem;
      box-shadow: 0 0 35px 0 rgba(49,58,70,0.07);
      margin-bottom: 24px;
    }

    .card-header {
      background: var(--hyper-card-bg);
      border-bottom: 1px solid var(--hyper-border);
      padding: 16px 20px;
      font-weight: 700;
      color: var(--hyper-dark);
      font-size: 0.95rem;
      border-radius: 0.5rem 0.5rem 0 0 !important;
    }

    .card-header .header-icon {
      width: 32px; height: 32px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      margin-right: 10px;
    }

    .card-body { padding: 20px; }

    /* ===== SECTION TITLES ===== */
    .section-title {
      color: var(--hyper-dark);
      font-weight: 700;
      font-size: 1.2rem;
      margin-bottom: 4px;
    }

    .section-title small {
      display: block;
      font-size: 0.8rem;
      font-weight: 400;
      color: var(--hyper-text-muted);
      margin-top: 2px;
    }

    /* ===== FIELD DEFINITION LIST ===== */
    .field-list { list-style: none; padding: 0; margin: 0; }
    .field-list li {
      padding: 10px 0;
      border-bottom: 1px solid var(--hyper-border);
      display: flex;
      gap: 12px;
    }
    .field-list li:last-child { border-bottom: none; }
    .field-list .field-name {
      font-weight: 700;
      color: var(--hyper-dark);
      min-width: 220px;
      font-size: 0.875rem;
    }
    .field-list .field-desc {
      color: #6c757d;
      font-size: 0.875rem;
      flex: 1;
    }

    /* ===== CALLOUTS ===== */
    .callout {
      border-radius: 0.4rem;
      padding: 14px 16px;
      margin: 16px 0;
      display: flex;
      gap: 12px;
      align-items: flex-start;
      font-size: 0.875rem;
    }

    .callout i { font-size: 1.1rem; margin-top: 1px; flex-shrink: 0; }

    .callout-tip {
      background: rgba(10,207,151,0.1);
      border-left: 4px solid var(--hyper-success);
      color: #1a8a65;
    }
    .callout-tip i { color: var(--hyper-success); }

    .callout-info {
      background: rgba(57,175,209,0.1);
      border-left: 4px solid var(--hyper-info);
      color: #1d6e84;
    }
    .callout-info i { color: var(--hyper-info); }

    .callout-warning {
      background: rgba(255,188,0,0.1);
      border-left: 4px solid var(--hyper-warning);
      color: #7a5900;
    }
    .callout-warning i { color: var(--hyper-warning); }

    .callout strong { display: block; margin-bottom: 2px; }

    /* ===== SCREENSHOT PLACEHOLDER ===== */
    .screenshot-placeholder {
      background: linear-gradient(135deg, var(--hyper-light) 0%, #e8ecf4 100%);
      border: 2px dashed var(--hyper-border);
      border-radius: 0.5rem;
      padding: 32px;
      text-align: center;
      color: var(--hyper-text-muted);
      margin: 16px 0;
      font-size: 0.85rem;
    }
    .screenshot-placeholder i { font-size: 2rem; display: block; margin-bottom: 8px; opacity: 0.4; }

    .screenshot-img {
      width: 100%;
      height: auto;
      border-radius: 0.5rem;
      border: 1px solid var(--hyper-border);
      box-shadow: 0 8px 24px rgba(49,58,70,0.08);
      margin: 16px 0;
      display: block;
      cursor: zoom-in ;
    }

    /* ===== BADGE TABS ===== */
    .nav-tabs { border-bottom: 2px solid var(--hyper-border); }
    .nav-tabs .nav-link {
      color: var(--hyper-text-muted);
      font-weight: 600;
      font-size: 0.875rem;
      border: none;
      padding: 10px 16px;
      border-bottom: 2px solid transparent;
      margin-bottom: -2px;
    }
    .nav-tabs .nav-link.active {
      color: var(--hyper-primary);
      border-bottom-color: var(--hyper-primary);
      background: none;
    }
    .nav-tabs .nav-link:hover { color: var(--hyper-primary); background: none; }
    .tab-content { padding-top: 16px; }

    /* ===== STEP LIST ===== */
    .step-list { list-style: none; padding: 0; margin: 0; }
    .step-list li {
      display: flex;
      gap: 14px;
      padding: 12px 0;
      border-bottom: 1px solid var(--hyper-border);
      align-items: flex-start;
    }
    .step-list li:last-child { border-bottom: none; }
    .step-num {
      width: 28px; height: 28px;
      background: var(--hyper-primary);
      color: #fff;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-weight: 700; font-size: 0.8rem;
      flex-shrink: 0;
    }
    .step-body { flex: 1; }
    .step-body strong { color: var(--hyper-dark); display: block; font-size: 0.875rem; }
    .step-body span { font-size: 0.8rem; color: var(--hyper-text-muted); }

    /* ===== TABLE ===== */
    .table-hyper th {
      background: var(--hyper-light);
      color: var(--hyper-dark);
      font-weight: 700;
      font-size: 0.82rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      border-bottom: 2px solid var(--hyper-border);
    }
    .table-hyper td { font-size: 0.875rem; vertical-align: top; }

    /* ===== BADGES ===== */
    .badge-hyper {
      font-size: 0.72rem;
      font-weight: 700;
      padding: 4px 8px;
      border-radius: 4px;
    }

    /* ===== HERO / COVER ===== */
    .guide-hero {
      background: linear-gradient(135deg, var(--hyper-primary) 0%, #5f6fe8 100%);
      border-radius: 0.5rem;
      padding: 36px;
      color: #fff;
      margin-bottom: 24px;
      position: relative;
      overflow: hidden;
    }
    .guide-hero h1 { font-size: 1.8rem; font-weight: 800; margin-bottom: 6px; }
    .guide-hero p { opacity: 0.85; margin: 0; font-size: 0.95rem; }
    .guide-hero .rev-badge {
      display: inline-block;
      background: rgba(255,255,255,0.2);
      padding: 3px 10px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 991px) {
      #sidebar { transform: translateX(-100%); }
      #sidebar.show { transform: translateX(0); }
      #topbar { left: 0; }
      #main { margin-left: 0; }
      .field-list li { flex-direction: column; gap: 4px; }
      .field-list .field-name { min-width: auto; }
    }

    /* ===== SCROLLSPY ACTIVE ===== */
    .scrollspy-active > a { color: var(--hyper-primary) !important; }

    /* ===== PRINT ===== */
    @media print {
      #sidebar, #topbar, #sidebarToggle { display: none !important; }
      #main { margin-left: 0; padding-top: 0; }
    }