/* ================================================
       DESIGN SYSTEM — SOJU88 DARK GAMING THEME
    ================================================ */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg-base:      #0a0a0f;
      --bg-card:      #1a1a2e;
      --bg-card-2:    #16213e;
      --accent:       #7c3aed;
      --accent-light: #9d5cf6;
      --accent-glow:  rgba(124,58,237,0.35);
      --cyan:         #06b6d4;
      --cyan-light:   #22d3ee;
      --cyan-glow:    rgba(6,182,212,0.30);
      --gold:         #f59e0b;
      --gold-light:   #fbbf24;
      --gold-glow:    rgba(245,158,11,0.30);
      --green:        #10b981;
      --red:          #ef4444;
      --orange:       #f97316;
      --text-primary: #f0f0ff;
      --text-secondary:#a0a0c0;
      --text-muted:   #60607a;
      --border:       rgba(255,255,255,0.08);
      --border-accent:rgba(124,58,237,0.40);
      --radius-sm:    8px;
      --radius:       14px;
      --radius-lg:    22px;
      --shadow-card:  0 4px 24px rgba(0,0,0,0.45);
      --shadow-glow:  0 0 32px var(--accent-glow);
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'Outfit', sans-serif;
      background-color: var(--bg-base);
      color: var(--text-primary);
      line-height: 1.7;
      overflow-x: hidden;
    }

    /* ── Scrollbar ── */
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: var(--bg-base); }
    ::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

    /* ── Typography ── */
    h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; }
    h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
    h2 { font-size: clamp(1.4rem, 3vw, 2rem); color: var(--text-primary); margin: 2rem 0 1rem; }
    h3 { font-size: clamp(1.1rem, 2.5vw, 1.45rem); color: var(--cyan-light); margin: 1.5rem 0 0.75rem; }
    p  { margin-bottom: 1rem; color: var(--text-secondary); }
    a  { color: var(--accent-light); text-decoration: none; transition: color 0.2s; }
    a:hover { color: var(--cyan-light); }

    strong { color: var(--text-primary); font-weight: 600; }
    em { color: var(--gold-light); font-style: normal; }

    ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; color: var(--text-secondary); }
    li { margin-bottom: 0.4rem; }

    /* ── Utility ── */
    .container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
    .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
    .flex { display: flex; }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .gap-1 { gap: 0.5rem; }
    .gap-2 { gap: 1rem; }
    .text-center { text-align: center; }
    .text-muted { color: var(--text-muted); font-size: 0.88rem; }
    .badge {
      display: inline-flex; align-items: center; gap: 0.3rem;
      padding: 3px 12px; border-radius: 50px; font-size: 0.78rem; font-weight: 600;
      background: var(--accent-glow); color: var(--accent-light); border: 1px solid var(--accent);
    }
    .badge-cyan  { background: var(--cyan-glow); color: var(--cyan-light); border-color: var(--cyan); }
    .badge-gold  { background: var(--gold-glow); color: var(--gold-light); border-color: var(--gold); }
    .badge-green { background: rgba(16,185,129,0.2); color: #34d399; border-color: var(--green); }
    .badge-red   { background: rgba(239,68,68,0.2); color: #fca5a5; border-color: var(--red); }
    .sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }

    /* ── Card ── */
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.75rem;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card), 0 0 28px var(--accent-glow);
      border-color: var(--border-accent);
    }

    /* ── Glassmorphism ── */
    .glass {
      background: rgba(26,26,46,0.65);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius);
    }

    /* ── Gradient text ── */
    .gradient-text {
      background: linear-gradient(135deg, var(--accent-light) 0%, var(--cyan-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .gradient-text-gold {
      background: linear-gradient(135deg, var(--gold) 0%, #fb923c 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* ── Buttons ── */
    .btn {
      display: inline-flex; align-items: center; gap: 0.5rem;
      padding: 0.65rem 1.5rem; border-radius: var(--radius-sm);
      font-family: 'Outfit', sans-serif; font-weight: 600; font-size: 0.95rem;
      cursor: pointer; border: none; transition: all 0.25s;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent) 0%, #5b21b6 100%);
      color: #fff; box-shadow: 0 4px 14px var(--accent-glow);
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px var(--accent-glow); color: #fff; }
    .btn-outline {
      background: transparent; color: var(--accent-light);
      border: 1px solid var(--accent); padding: 0.55rem 1.2rem;
    }
    .btn-outline:hover { background: var(--accent-glow); }
    .btn-cyan {
      background: linear-gradient(135deg, var(--cyan) 0%, #0284c7 100%);
      color: #fff; box-shadow: 0 4px 14px var(--cyan-glow);
    }
    .btn-cyan:hover { transform: translateY(-2px); box-shadow: 0 8px 20px var(--cyan-glow); color: #fff; }

    /* ================================================================
       NAVIGATION
    ================================================================ */
    .site-header {
      position: sticky; top: 0; z-index: 1000;
      background: rgba(10,10,15,0.90);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border);
    }
    .nav-inner {
      display: flex; align-items: center; justify-content: space-between;
      padding: 0 20px; max-width: 1240px; margin: 0 auto; height: 68px;
    }
    .nav-logo {
      font-size: 1.6rem; font-weight: 900; letter-spacing: -0.04em;
      background: linear-gradient(135deg, var(--accent-light), var(--cyan-light));
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .nav-menu { display: flex; list-style: none; gap: 0.25rem; padding: 0; margin: 0; }
    .nav-menu li a {
      display: block; padding: 0.5rem 0.9rem; border-radius: var(--radius-sm);
      font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
      transition: all 0.2s;
    }
    .nav-menu li a:hover,
    .nav-menu li a.active { color: var(--text-primary); background: var(--accent-glow); }
    .nav-menu li a.active { color: var(--accent-light); }
    .nav-actions { display: flex; align-items: center; gap: 0.75rem; }
    .nav-search {
      display: flex; align-items: center; gap: 0.5rem;
      background: var(--bg-card); border: 1px solid var(--border);
      border-radius: var(--radius-sm); padding: 0.4rem 0.8rem;
      font-family: 'Outfit', sans-serif; font-size: 0.88rem; color: var(--text-secondary);
      width: 200px; transition: border-color 0.2s;
    }
    .nav-search:focus-within { border-color: var(--accent); }
    .nav-search input { background: none; border: none; outline: none; color: var(--text-primary); width: 100%; font-family: 'Outfit', sans-serif; }
    .nav-search input::placeholder { color: var(--text-muted); }
    .hamburger { display: none; background: none; border: none; cursor: pointer; padding: 6px; flex-direction: column; gap: 5px; }
    .hamburger span { display: block; width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all 0.3s; }

    /* ================================================================
       PAGE HERO
    ================================================================ */
    .page-hero {
      position: relative; overflow: hidden;
      padding: 90px 20px 70px;
      background: linear-gradient(135deg, #0a0a0f 0%, #12102a 50%, #0a1020 100%);
      text-align: center;
    }
    .page-hero::before {
      content: '';
      position: absolute; inset: 0;
      background:
        radial-gradient(ellipse 60% 50% at 30% 40%, rgba(124,58,237,0.20) 0%, transparent 70%),
        radial-gradient(ellipse 50% 40% at 75% 60%, rgba(6,182,212,0.15) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-grid-bg {
      position: absolute; inset: 0; pointer-events: none;
      background-image:
        linear-gradient(rgba(124,58,237,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124,58,237,0.06) 1px, transparent 1px);
      background-size: 60px 60px;
    }
    .page-hero .container { position: relative; z-index: 1; }
    .hero-eyebrow {
      display: inline-flex; align-items: center; gap: 0.6rem;
      background: rgba(124,58,237,0.15); border: 1px solid rgba(124,58,237,0.35);
      border-radius: 50px; padding: 6px 18px; margin-bottom: 1.25rem;
      font-size: 0.85rem; font-weight: 600; color: var(--accent-light);
      letter-spacing: 0.05em; text-transform: uppercase;
    }
    .hero-eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse-dot 1.8s infinite; }
    @keyframes pulse-dot { 0%,100% { opacity:1; transform:scale(1); } 50% { opacity:0.5; transform:scale(1.3); } }

    .page-hero h1 { margin-bottom: 1rem; }
    .hero-subtitle {
      font-size: clamp(1rem, 2.2vw, 1.2rem);
      color: var(--text-secondary); max-width: 680px; margin: 0 auto 2rem;
    }
    .hero-stats {
      display: flex; justify-content: center; gap: 2.5rem; flex-wrap: wrap;
      margin-top: 2.5rem; padding-top: 2rem;
      border-top: 1px solid var(--border);
    }
    .hero-stat { text-align: center; }
    .hero-stat-value { font-size: 1.8rem; font-weight: 800; line-height: 1; }
    .hero-stat-label { font-size: 0.82rem; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.06em; }

    /* ================================================================
       BREADCRUMB
    ================================================================ */
    .breadcrumb-bar {
      background: rgba(26,26,46,0.5);
      border-bottom: 1px solid var(--border);
      padding: 12px 0;
    }
    .breadcrumb-list {
      list-style: none; padding: 0; margin: 0;
      display: flex; align-items: center; flex-wrap: wrap; gap: 0.3rem;
      font-size: 0.85rem;
    }
    .breadcrumb-list li { display: flex; align-items: center; gap: 0.3rem; }
    .breadcrumb-list li + li::before { content: '›'; color: var(--text-muted); }
    .breadcrumb-list a { color: var(--text-muted); }
    .breadcrumb-list a:hover { color: var(--accent-light); }
    .breadcrumb-list [aria-current] { color: var(--accent-light); font-weight: 500; }

    /* ================================================================
       MAIN LAYOUT
    ================================================================ */
    .main-layout {
      display: grid;
      grid-template-columns: 1fr 340px;
      gap: 2.5rem;
      padding: 3rem 0 4rem;
      align-items: start;
    }
    .content-col { min-width: 0; }
    .sidebar { position: sticky; top: 90px; }

    /* ================================================================
       FEATURED ARTICLE
    ================================================================ */
    .featured-article {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .article-hero-banner {
      height: 200px;
      background: linear-gradient(135deg, #12102a 0%, #1e1040 50%, #0a1830 100%);
      display: flex; align-items: center; justify-content: center;
      position: relative; overflow: hidden;
    }
    .article-hero-banner::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse at center, rgba(124,58,237,0.30) 0%, transparent 70%);
    }
    .article-hero-emoji { font-size: 6rem; position: relative; z-index: 1; filter: drop-shadow(0 0 30px var(--accent)); }
    .article-hero-banner .banner-title {
      position: absolute; bottom: 1rem; left: 1.5rem; right: 1.5rem;
      font-size: 0.8rem; font-weight: 600; color: var(--accent-light);
      text-transform: uppercase; letter-spacing: 0.1em;
      display: flex; align-items: center; gap: 0.5rem;
    }
    .article-body { padding: 2.5rem; }

    /* Article meta */
    .article-meta-row {
      display: flex; align-items: center; flex-wrap: wrap; gap: 1rem;
      margin-bottom: 1.5rem; padding-bottom: 1.5rem;
      border-bottom: 1px solid var(--border);
    }
    .meta-item {
      display: flex; align-items: center; gap: 0.35rem;
      font-size: 0.83rem; color: var(--text-muted);
    }
    .meta-item .icon { font-size: 1rem; }
    .meta-cat { color: var(--accent-light); font-weight: 600; }

    /* Article content typography */
    .article-content h2 {
      position: relative; padding-left: 1rem;
      border-left: 3px solid var(--accent);
      margin: 2.5rem 0 1rem;
    }
    .article-content h3 {
      margin: 2rem 0 0.75rem;
    }
    .article-content p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 1.1rem; }
    .article-content ul li, .article-content ol li { margin-bottom: 0.6rem; color: var(--text-secondary); }

    /* Callout boxes */
    .callout {
      border-radius: var(--radius-sm);
      padding: 1.25rem 1.5rem;
      margin: 1.75rem 0;
      border-left: 4px solid;
    }
    .callout-title {
      font-weight: 700; margin-bottom: 0.4rem; font-size: 0.95rem;
      display: flex; align-items: center; gap: 0.5rem;
    }
    .callout-tip   { background: rgba(16,185,129,0.10); border-color: var(--green); }
    .callout-tip .callout-title { color: #34d399; }
    .callout-warning { background: rgba(245,158,11,0.10); border-color: var(--gold); }
    .callout-warning .callout-title { color: var(--gold-light); }
    .callout-info  { background: rgba(6,182,212,0.10); border-color: var(--cyan); }
    .callout-info .callout-title { color: var(--cyan-light); }
    .callout-danger { background: rgba(239,68,68,0.10); border-color: var(--red); }
    .callout-danger .callout-title { color: #fca5a5; }
    .callout p { margin: 0; font-size: 0.93rem; }

    /* Hero tier table */
    .tier-table-wrap { overflow-x: auto; margin: 1.75rem 0; border-radius: var(--radius-sm); }
    .tier-table {
      width: 100%; border-collapse: collapse;
      font-size: 0.9rem;
    }
    .tier-table thead tr {
      background: linear-gradient(135deg, var(--accent), #5b21b6);
    }
    .tier-table thead th {
      padding: 12px 16px; text-align: left;
      color: #fff; font-weight: 700; font-size: 0.85rem;
      text-transform: uppercase; letter-spacing: 0.05em;
    }
    .tier-table tbody tr { border-bottom: 1px solid var(--border); transition: background 0.2s; }
    .tier-table tbody tr:hover { background: rgba(124,58,237,0.08); }
    .tier-table td { padding: 11px 16px; color: var(--text-secondary); vertical-align: middle; }
    .tier-table td:first-child { color: var(--text-primary); font-weight: 600; }
    .tier-badge {
      display: inline-block; padding: 2px 10px; border-radius: 50px;
      font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em;
    }
    .tier-s { background: rgba(245,158,11,0.25); color: var(--gold-light); border: 1px solid var(--gold); }
    .tier-a { background: rgba(16,185,129,0.20); color: #34d399; border: 1px solid var(--green); }
    .tier-b { background: rgba(6,182,212,0.20); color: var(--cyan-light); border: 1px solid var(--cyan); }
    .tier-c { background: rgba(124,58,237,0.20); color: var(--accent-light); border: 1px solid var(--accent); }

    /* Carry steps list */
    .steps-list { counter-reset: steps; list-style: none; padding: 0; }
    .steps-list li {
      counter-increment: steps;
      display: flex; gap: 1rem; align-items: flex-start;
      padding: 1rem; margin-bottom: 0.75rem;
      background: rgba(124,58,237,0.06); border: 1px solid var(--border);
      border-radius: var(--radius-sm); transition: border-color 0.2s;
    }
    .steps-list li:hover { border-color: var(--border-accent); }
    .step-num {
      flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%;
      background: linear-gradient(135deg, var(--accent), #5b21b6);
      display: flex; align-items: center; justify-content: center;
      font-weight: 800; font-size: 0.85rem; color: #fff;
    }
    .step-num::before { content: counter(steps); }
    .step-text { flex: 1; }
    .step-text strong { display: block; color: var(--text-primary); margin-bottom: 0.2rem; }
    .step-text span { font-size: 0.88rem; color: var(--text-secondary); }

    /* Author box */
    .author-box {
      margin-top: 3rem; padding: 1.75rem;
      background: rgba(124,58,237,0.06);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius);
      display: flex; gap: 1.25rem; align-items: flex-start;
    }
    .author-avatar {
      width: 72px; height: 72px; border-radius: 50%; flex-shrink: 0;
      background: linear-gradient(135deg, var(--accent), var(--cyan));
      display: flex; align-items: center; justify-content: center;
      font-size: 2rem; font-weight: 800; color: #fff;
      border: 3px solid var(--accent);
    }
    .author-info { flex: 1; }
    .author-info h4 { font-size: 1.05rem; margin-bottom: 0.25rem; color: var(--text-primary); }
    .author-title { font-size: 0.82rem; color: var(--accent-light); font-weight: 600; margin-bottom: 0.5rem; }
    .author-bio { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 0.75rem; }
    .author-credentials {
      display: flex; flex-wrap: wrap; gap: 0.5rem;
    }

    /* Tags */
    .article-tags {
      display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 2rem;
    }
    .tag {
      padding: 4px 12px; border-radius: 50px; font-size: 0.8rem;
      background: var(--bg-card-2); color: var(--text-muted);
      border: 1px solid var(--border); transition: all 0.2s;
    }
    .tag:hover { color: var(--accent-light); border-color: var(--accent); }

    /* Editorial note */
    .editorial-note {
      margin-top: 1.5rem; padding: 1rem 1.25rem;
      background: rgba(6,182,212,0.06); border: 1px solid rgba(6,182,212,0.2);
      border-radius: var(--radius-sm); font-size: 0.82rem; color: var(--text-muted);
      display: flex; gap: 0.5rem; align-items: flex-start;
    }
    .editorial-note .icon { color: var(--cyan-light); flex-shrink: 0; margin-top: 2px; }

    /* ================================================================
       STRATEGY CATEGORIES
    ================================================================ */
    .section-header { margin-bottom: 2rem; }
    .section-header h2 {
      font-size: clamp(1.4rem, 3vw, 1.9rem); border-left: none; padding-left: 0;
      margin: 0 0 0.5rem;
    }
    .section-header p { margin: 0; }

    .category-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 1.25rem;
      margin-bottom: 3rem;
    }
    .cat-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.5rem;
      text-decoration: none;
      display: block;
      transition: all 0.3s;
      position: relative; overflow: hidden;
    }
    .cat-card::before {
      content: '';
      position: absolute; top: 0; left: 0; right: 0; height: 3px;
      background: linear-gradient(90deg, var(--accent), var(--cyan));
      transform: scaleX(0); transform-origin: left;
      transition: transform 0.3s;
    }
    .cat-card:hover { transform: translateY(-4px); border-color: var(--border-accent); box-shadow: var(--shadow-card), 0 0 24px var(--accent-glow); }
    .cat-card:hover::before { transform: scaleX(1); }
    .cat-icon { font-size: 2.5rem; margin-bottom: 0.75rem; display: block; line-height: 1; }
    .cat-card h3 { font-size: 1.05rem; color: var(--text-primary); margin: 0 0 0.5rem; line-height: 1.3; }
    .cat-card p { font-size: 0.85rem; color: var(--text-muted); margin: 0 0 0.75rem; line-height: 1.5; }
    .cat-link-text { font-size: 0.82rem; font-weight: 600; color: var(--accent-light); display: flex; align-items: center; gap: 0.3rem; }

    /* ================================================================
       VIDEO GUIDES
    ================================================================ */
    .video-section { margin-bottom: 3rem; }
    .video-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 1.25rem;
    }
    .video-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: all 0.3s;
    }
    .video-card:hover { transform: translateY(-4px); border-color: var(--cyan); box-shadow: 0 8px 30px var(--cyan-glow); }
    .video-thumb {
      height: 140px;
      background: linear-gradient(135deg, #12102a, #0a1830);
      display: flex; align-items: center; justify-content: center;
      font-size: 3.5rem; position: relative; cursor: pointer;
      transition: background 0.3s;
    }
    .video-card:hover .video-thumb { background: linear-gradient(135deg, #1e1040, #0a2040); }
    .play-btn {
      position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
      background: rgba(0,0,0,0.4); opacity: 0; transition: opacity 0.3s;
      font-size: 2.5rem;
    }
    .video-card:hover .play-btn { opacity: 1; }
    .video-info { padding: 1rem; }
    .video-info h4 { font-size: 0.92rem; color: var(--text-primary); margin-bottom: 0.3rem; line-height: 1.35; }
    .video-meta { display: flex; gap: 0.75rem; font-size: 0.78rem; color: var(--text-muted); }
    .video-meta span { display: flex; align-items: center; gap: 0.25rem; }

    /* ================================================================
       SIDEBAR
    ================================================================ */
    .sidebar-widget {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.5rem;
      margin-bottom: 1.5rem;
    }
    .widget-title {
      font-size: 1rem; font-weight: 700; margin-bottom: 1.25rem;
      color: var(--text-primary); display: flex; align-items: center; gap: 0.5rem;
      padding-bottom: 0.75rem; border-bottom: 1px solid var(--border);
    }
    .widget-title .icon { font-size: 1.15rem; }

    /* Pro Tips widget */
    .pro-tip-list { list-style: none; padding: 0; margin: 0; }
    .pro-tip-list li {
      display: flex; gap: 0.6rem; align-items: flex-start;
      padding: 0.7rem 0; border-bottom: 1px solid var(--border); font-size: 0.87rem;
      color: var(--text-secondary);
    }
    .pro-tip-list li:last-child { border-bottom: none; padding-bottom: 0; }
    .tip-emoji { flex-shrink: 0; font-size: 1.1rem; line-height: 1.4; }

    /* Quick nav widget */
    .quick-nav-list { list-style: none; padding: 0; margin: 0; }
    .quick-nav-list li a {
      display: flex; align-items: center; gap: 0.5rem;
      padding: 0.6rem 0.75rem; border-radius: var(--radius-sm);
      font-size: 0.87rem; color: var(--text-secondary);
      transition: all 0.2s;
    }
    .quick-nav-list li a:hover { background: var(--accent-glow); color: var(--accent-light); }
    .quick-nav-list li a .icon { font-size: 0.9rem; }

    /* Popular articles widget */
    .popular-list { list-style: none; padding: 0; margin: 0; }
    .popular-list li { padding: 0.8rem 0; border-bottom: 1px solid var(--border); }
    .popular-list li:last-child { border-bottom: none; padding-bottom: 0; }
    .popular-list a { font-size: 0.88rem; color: var(--text-secondary); display: block; margin-bottom: 0.25rem; line-height: 1.4; }
    .popular-list a:hover { color: var(--accent-light); }
    .popular-meta { font-size: 0.75rem; color: var(--text-muted); display: flex; gap: 0.5rem; }

    /* Newsletter widget */
    .newsletter-widget {
      background: linear-gradient(135deg, rgba(124,58,237,0.15) 0%, rgba(6,182,212,0.10) 100%);
      border: 1px solid var(--border-accent);
    }
    .newsletter-widget h3 { font-size: 1rem; margin-bottom: 0.5rem; color: var(--text-primary); }
    .newsletter-widget p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 1rem; }
    .newsletter-form { display: flex; flex-direction: column; gap: 0.75rem; }
    .newsletter-form input[type="email"] {
      background: var(--bg-base); border: 1px solid var(--border);
      border-radius: var(--radius-sm); padding: 0.6rem 0.9rem;
      color: var(--text-primary); font-family: 'Outfit', sans-serif; font-size: 0.88rem;
      transition: border-color 0.2s;
    }
    .newsletter-form input[type="email"]:focus { outline: none; border-color: var(--accent); }
    .newsletter-form input::placeholder { color: var(--text-muted); }

    /* ================================================================
       FAQ
    ================================================================ */
    .faq-section { margin-bottom: 3rem; }
    .faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: border-color 0.3s;
    }
    .faq-item:hover { border-color: var(--border-accent); }
    .faq-question {
      padding: 1.1rem 1.25rem;
      font-size: 0.97rem; font-weight: 600; cursor: pointer;
      display: flex; justify-content: space-between; align-items: center; gap: 1rem;
      color: var(--text-primary); list-style: none;
      transition: color 0.2s;
    }
    .faq-question:hover { color: var(--accent-light); }
    details[open] .faq-question { color: var(--accent-light); }
    .faq-question .faq-icon { font-size: 1.2rem; flex-shrink: 0; color: var(--accent); transition: transform 0.3s; }
    details[open] .faq-icon { transform: rotate(45deg); }
    .faq-answer {
      padding: 0 1.25rem 1.25rem;
      font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7;
    }
    .faq-answer p { margin: 0; }

    /* ================================================================
       REFERENCES
    ================================================================ */
    .references-section { margin-bottom: 3rem; }
    .ref-list { list-style: none; padding: 0; margin: 0; }
    .ref-list li {
      display: flex; gap: 0.75rem; align-items: flex-start;
      padding: 0.75rem 0; border-bottom: 1px solid var(--border); font-size: 0.86rem;
    }
    .ref-list li:last-child { border-bottom: none; }
    .ref-num {
      flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%;
      background: var(--accent-glow); border: 1px solid var(--accent);
      display: flex; align-items: center; justify-content: center;
      font-size: 0.72rem; font-weight: 700; color: var(--accent-light);
    }
    .ref-content { flex: 1; color: var(--text-muted); line-height: 1.5; }
    .ref-content a { color: var(--cyan-light); }
    .ref-content a:hover { color: var(--accent-light); }

    /* ================================================================
       RELATED LINKS
    ================================================================ */
    .internal-links-section { margin-bottom: 3rem; }
    .links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 1rem;
    }
    .link-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 1.1rem 1.25rem;
      display: flex; align-items: center; gap: 0.75rem;
      text-decoration: none; transition: all 0.25s;
      color: var(--text-secondary);
    }
    .link-card:hover { border-color: var(--cyan); background: rgba(6,182,212,0.06); color: var(--cyan-light); }
    .link-card .icon { font-size: 1.4rem; flex-shrink: 0; }
    .link-card span { font-size: 0.88rem; font-weight: 500; }

    /* ================================================================
       FOOTER
    ================================================================ */
    .site-footer {
      background: var(--bg-card);
      border-top: 1px solid var(--border);
      padding: 3.5rem 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.8fr 1fr 1fr 1fr;
      gap: 2.5rem;
      padding-bottom: 3rem;
      border-bottom: 1px solid var(--border);
    }
    .footer-brand .logo { font-size: 1.8rem; font-weight: 900; letter-spacing: -0.04em; }
    .footer-brand p { font-size: 0.88rem; color: var(--text-muted); margin: 0.75rem 0 1.25rem; line-height: 1.6; max-width: 300px; }
    .footer-social { display: flex; gap: 0.6rem; }
    .social-btn {
      width: 38px; height: 38px; border-radius: 50%;
      background: var(--bg-base); border: 1px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      font-size: 1rem; text-decoration: none; transition: all 0.25s;
      color: var(--text-muted);
    }
    .social-btn:hover { border-color: var(--accent); color: var(--accent-light); background: var(--accent-glow); }
    .footer-heading { font-size: 0.9rem; font-weight: 700; color: var(--text-primary); margin-bottom: 1rem; letter-spacing: 0.04em; text-transform: uppercase; }
    .footer-links { list-style: none; padding: 0; margin: 0; }
    .footer-links li { margin-bottom: 0.5rem; }
    .footer-links a { font-size: 0.87rem; color: var(--text-muted); transition: color 0.2s; }
    .footer-links a:hover { color: var(--accent-light); }
    .footer-bottom {
      display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
      gap: 1rem; padding: 1.25rem 0; font-size: 0.82rem; color: var(--text-muted);
    }
    .footer-bottom-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
    .footer-bottom-links a { color: var(--text-muted); transition: color 0.2s; }
    .footer-bottom-links a:hover { color: var(--accent-light); }
    .footer-disclaimer { padding: 1rem 0 1.5rem; font-size: 0.78rem; color: var(--text-muted); line-height: 1.6; border-top: 1px solid var(--border); margin-top: 0; text-align: center; }

    /* ================================================================
       SECTION DIVIDER
    ================================================================ */
    .section-divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--accent), var(--cyan), transparent);
      margin: 3rem 0;
      opacity: 0.3;
    }

    /* ================================================================
       SCROLL TO TOP
    ================================================================ */
    .scroll-top {
      position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 900;
      width: 46px; height: 46px; border-radius: 50%;
      background: linear-gradient(135deg, var(--accent), #5b21b6);
      border: none; cursor: pointer; display: none;
      align-items: center; justify-content: center;
      color: #fff; font-size: 1.2rem;
      box-shadow: 0 4px 16px var(--accent-glow);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .scroll-top:hover { transform: translateY(-3px); box-shadow: 0 8px 24px var(--accent-glow); }

    /* ================================================================
       RESPONSIVE
    ================================================================ */
    @media (max-width: 1024px) {
      .main-layout { grid-template-columns: 1fr; }
      .sidebar { position: static; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .hamburger { display: flex; }
      .nav-search { display: none; }
      .grid-2, .grid-3 { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .article-body { padding: 1.5rem; }
      .author-box { flex-direction: column; align-items: center; text-align: center; }
      .hero-stats { gap: 1.5rem; }
      .scroll-top { display: flex; }
    }
    @media (max-width: 480px) {
      .article-meta-row { flex-direction: column; gap: 0.5rem; }
      .hero-stats { gap: 1rem; }
    }

    /* ── Animations ── */
    @keyframes float-up {
      from { opacity: 0; transform: translateY(30px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .animate-up { animation: float-up 0.6s ease forwards; }
    .delay-1 { animation-delay: 0.15s; }
    .delay-2 { animation-delay: 0.30s; }
    .delay-3 { animation-delay: 0.45s; }

    /* ── Reading progress bar ── */
    .progress-bar {
      position: fixed; top: 0; left: 0; height: 3px; z-index: 9999;
      background: linear-gradient(90deg, var(--accent), var(--cyan));
      width: 0%; transition: width 0.1s linear;
    }