/* =========================================================
       BRAND COLOUR SYSTEM
    ========================================================= */
    :root {
      --dark:       #13544E;
      --heading:    #095D40;
      --accent:     #6C9A40;
      --cta:        #008060;
      --lime:       #D3E162;
      --lime-light: #E4F577;
      --bg:         #FBF7ED;
      --alt:        #E0EDD4;
      --text:       #212B36;
      --muted:      #5a6a75;
      --white:      #ffffff;
      --warning-bg: #fffbeb;
      --warning-bd: #f59e0b;
      --warning-tx: #92400e;
      --tip-bg:     #f0fdf4;
      --tip-bd:     #22c55e;
      --tip-tx:     #14532d;
      --radius:     12px;
      --radius-lg:  20px;
      --shadow:     0 4px 24px rgba(9,93,64,0.09);
      --shadow-lg:  0 8px 40px rgba(9,93,64,0.14);
      --transition: all 0.25s ease;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Inter', sans-serif;
      background: var(--bg);
      color: var(--text);
      font-size: 16px;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      padding-top: 115px; /* 40px announcement bar + 75px nav */
    }
    a { text-decoration: none; color: inherit; }
    img { max-width: 100%; display: block; }
    .container    { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

    /* =========================================================
       SHARED UTILITIES
    ========================================================= */
    .badge {
      display: inline-flex; align-items: center; gap: 4px;
      font-size: 0.70rem; font-weight: 800;
      padding: 3px 10px; border-radius: 100px;
      text-transform: uppercase; letter-spacing: 0.05em;
    }
    .badge-cat          { background: var(--alt);    color: var(--heading); }
    .badge-beginner     { background: #dcfce7;       color: #14532d; }
    .badge-intermediate { background: #fef3c7;       color: #92400e; }
    .badge-advanced     { background: #fee2e2;       color: #991b1b; }
    .badge-video        { background: #dbeafe;       color: #1e40af; }
    .badge-guide        { background: #ede9fe;       color: #5b21b6; }
    .badge-free         { background: var(--lime);   color: var(--heading); }

    /* =========================================================
       ANNOUNCEMENT BAR
    ========================================================= */
    .announcement-bar {
      background: var(--heading);
      color: var(--white);
      text-align: center;
      padding: 10px 16px;
      font-size: 0.85rem; font-weight: 600;
    }
    .announcement-bar i { color: var(--lime); margin-right: 4px; }
    .announcement-bar a { color: var(--lime); text-decoration: underline; }

    /* =========================================================
       SECTION 1 — FULL NAVIGATION
    ========================================================= */
    .main-nav {
      background: var(--white);
      border-bottom: 1px solid rgba(9,93,64,0.10);
      box-shadow: 0 2px 12px rgba(9,93,64,0.07);
      position: sticky; top: 0; z-index: 1000;
    }
    .nav-inner {
      display: flex; align-items: center;
      justify-content: space-between; height: 70px; gap: 16px;
    }
    .nav-logo { font-size: 1.2rem; font-weight: 900; color: var(--heading); }
    .nav-logo .acc { color: var(--accent); }
    .nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
    .nav-links > li > a {
      display: flex; align-items: center; gap: 5px;
      font-size: 0.88rem; font-weight: 600; color: var(--text);
      padding: 8px 12px; border-radius: 8px; transition: var(--transition);
    }
    .nav-links > li > a:hover,
    .nav-links > li > a.active { background: var(--alt); color: var(--heading); }
    .nav-links > li > a i { font-size: 0.70rem; color: var(--muted); }
    .nav-cta {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--cta); color: var(--white);
      font-size: 0.85rem; font-weight: 800;
      padding: 10px 20px; border-radius: 9px;
      white-space: nowrap; transition: var(--transition);
    }
    .nav-cta:hover { background: var(--heading); }

    /* Breadcrumb */
    .breadcrumb-bar { background: var(--white); border-bottom: 1px solid rgba(9,93,64,0.08); padding: 10px 0; }
    .breadcrumb { display: flex; align-items: center; gap: 7px; font-size: 0.80rem; flex-wrap: wrap; }
    .breadcrumb a { color: var(--cta); font-weight: 600; transition: var(--transition); }
    .breadcrumb a:hover { color: var(--heading); }
    .breadcrumb .sep { color: var(--muted); font-size: 0.58rem; }
    .breadcrumb .current { color: var(--heading); font-weight: 800; }

    /* Reading Progress Bar */
    .reading-progress {
      position: fixed; top: 0; left: 0; right: 0;
      height: 3px; background: var(--alt); z-index: 2000;
    }
    .reading-progress-fill {
      height: 100%; background: var(--cta);
      width: 0%; transition: width 0.1s linear;
      border-radius: 0 3px 3px 0;
    }

    /* =========================================================
       SECTION 2 — TUTORIAL HEADER
    ========================================================= */
    .tutorial-header {
      background: var(--white);
      border-bottom: 1px solid rgba(9,93,64,0.08);
      padding: 48px 0 40px;
    }
    .header-badge-row {
      display: flex; align-items: center; gap: 8px;
      flex-wrap: wrap; margin-bottom: 18px;
    }
    .tutorial-header h1 {
      font-size: clamp(1.6rem, 3.5vw, 2.4rem);
      font-weight: 900; color: var(--heading);
      letter-spacing: -0.025em; line-height: 1.18;
      margin-bottom: 14px; max-width: 860px;
    }
    .tutorial-header .sub {
      font-size: 1.05rem; color: var(--muted);
      line-height: 1.72; margin-bottom: 22px; max-width: 720px;
    }

    .header-meta-row {
      display: flex; align-items: center; gap: 20px;
      flex-wrap: wrap; padding: 16px 0;
      border-top: 1px solid var(--alt); border-bottom: 1px solid var(--alt);
      margin-bottom: 18px;
    }
    .hm-author { display: flex; align-items: center; gap: 10px; }
    .hm-avatar {
      width: 38px; height: 38px; border-radius: 50%;
      background: linear-gradient(135deg, var(--dark), var(--heading));
      display: flex; align-items: center; justify-content: center;
      font-size: 0.78rem; font-weight: 900; color: var(--lime);
      flex-shrink: 0;
    }
    .hm-author-text strong { display: block; font-size: 0.86rem; font-weight: 800; color: var(--heading); }
    .hm-author-text span  { font-size: 0.76rem; color: var(--muted); }
    .hm-separator { width: 1px; height: 28px; background: var(--alt); }
    .hm-stat { display: flex; align-items: center; gap: 6px; font-size: 0.83rem; font-weight: 600; color: var(--muted); }
    .hm-stat i { color: var(--cta); font-size: 0.76rem; }
    .hm-stars { color: #f59e0b; font-size: 0.84rem; letter-spacing: 1px; }
    .hm-rating-text { font-size: 0.80rem; color: var(--muted); margin-left: 4px; }

    .share-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
    .share-label { font-size: 0.80rem; font-weight: 700; color: var(--muted); }
    .share-btn {
      display: inline-flex; align-items: center; gap: 6px;
      background: var(--bg); border: 1.5px solid rgba(9,93,64,0.15);
      color: var(--text); font-size: 0.78rem; font-weight: 700;
      padding: 6px 13px; border-radius: 8px;
      cursor: pointer; font-family: inherit; transition: var(--transition);
    }
    .share-btn:hover { background: var(--cta); color: var(--white); border-color: var(--cta); }
    .share-btn i { font-size: 0.75rem; }

    /* =========================================================
       SECTION 3 — FEATURED VIDEO / IMAGE
    ========================================================= */
    .featured-media-section {
      background: var(--bg);
      padding: 40px 0 0;
    }
    .video-wrapper {
      background: var(--dark);
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      aspect-ratio: 16 / 7;
      max-height: 460px;
      box-shadow: var(--shadow-lg);
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
    }
    .video-bg {
      position: absolute; inset: 0;
      background: linear-gradient(135deg, var(--dark) 0%, #0d6b62 60%, var(--heading) 100%);
      display: flex; align-items: center; justify-content: center;
    }
    .video-topic-icon { font-size: 5rem; opacity: 0.25; position: absolute; }
    .video-play-center {
      width: 80px; height: 80px;
      background: rgba(255,255,255,0.95);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.6rem; color: var(--heading);
      box-shadow: 0 8px 32px rgba(0,0,0,0.25);
      transition: var(--transition); z-index: 2; position: relative;
    }
    .video-wrapper:hover .video-play-center { background: var(--lime); transform: scale(1.08); }
    .video-duration-badge {
      position: absolute; bottom: 16px; right: 20px;
      background: rgba(9,93,64,0.85); color: var(--white);
      font-size: 0.80rem; font-weight: 800;
      padding: 5px 14px; border-radius: 100px; z-index: 3;
      display: flex; align-items: center; gap: 6px;
    }
    .video-caption {
      text-align: center; margin-top: 14px;
      font-size: 0.88rem; color: var(--muted); font-style: italic;
    }
    .video-caption i { color: var(--cta); margin-right: 5px; }

    /* =========================================================
       MAIN CONTENT LAYOUT — 2 COLUMN
    ========================================================= */
    .tutorial-body {
      background: var(--bg);
      padding: 44px 0 72px;
    }
    .tutorial-layout {
      display: grid;
      grid-template-columns: 1fr 320px;
      gap: 40px;
      align-items: start;
    }

    /* =========================================================
       SECTIONS 4–8 — LEFT COLUMN CONTENT
    ========================================================= */

    /* What You Will Learn Box */
    .learn-box {
      background: var(--white);
      border: 2px solid var(--cta);
      border-radius: var(--radius-lg);
      padding: 24px 26px;
      margin-bottom: 32px;
    }
    .learn-box-title {
      display: flex; align-items: center; gap: 10px;
      font-size: 0.80rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--cta); margin-bottom: 16px;
    }
    .learn-box-title i { font-size: 0.90rem; }
    .learn-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .learn-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.93rem; line-height: 1.5; }
    .learn-check {
      width: 22px; height: 22px; background: var(--lime);
      border-radius: 6px; display: flex; align-items: center; justify-content: center;
      flex-shrink: 0; color: var(--heading); font-size: 0.62rem; margin-top: 1px;
    }

    /* What You'll Need */
    .needs-box {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 22px 24px;
      margin-bottom: 28px;
      border: 1.5px solid rgba(9,93,64,0.10);
      box-shadow: var(--shadow);
    }
    .needs-title {
      font-size: 0.80rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--heading); margin-bottom: 14px;
      display: flex; align-items: center; gap: 8px;
    }
    .needs-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .needs-list li { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; }
    .needs-list li i { color: var(--cta); font-size: 0.72rem; flex-shrink: 0; }
    .needs-list a { color: var(--cta); font-weight: 600; }
    .needs-list a:hover { text-decoration: underline; }

    /* TOC Mobile */
    .toc-mobile {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 20px 22px;
      margin-bottom: 28px;
      border: 1.5px solid rgba(9,93,64,0.10);
      box-shadow: var(--shadow);
      display: none;
    }
    .toc-title {
      font-size: 0.80rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--heading); margin-bottom: 12px;
      display: flex; align-items: center; gap: 8px;
    }
    .toc-list { list-style: none; display: flex; flex-direction: column; gap: 5px; }
    .toc-list a {
      display: flex; align-items: center; gap: 8px;
      font-size: 0.86rem; font-weight: 600; color: var(--muted);
      padding: 6px 8px; border-radius: 8px; transition: var(--transition);
    }
    .toc-list a:hover,
    .toc-list a.active { color: var(--cta); background: rgba(0,128,96,0.06); }
    .toc-list a i { font-size: 0.65rem; flex-shrink: 0; color: var(--cta); }

    /* Steps Content */
    .step-block { margin-bottom: 48px; }
    .step-indicator {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--heading); color: var(--lime);
      font-size: 0.78rem; font-weight: 900;
      padding: 5px 14px; border-radius: 100px; margin-bottom: 14px;
    }
    .step-block h2 {
      font-size: 1.35rem; font-weight: 900; color: var(--heading);
      letter-spacing: -0.02em; margin-bottom: 12px; line-height: 1.3;
      scroll-margin-top: 100px;
    }
    .step-block h3 {
      font-size: 1.05rem; font-weight: 800; color: var(--heading);
      margin: 18px 0 10px; line-height: 1.35;
    }
    .step-block p {
      font-size: 0.95rem; color: var(--text);
      line-height: 1.78; margin-bottom: 14px;
    }
    .step-block ul,
    .step-block ol { padding-left: 20px; margin-bottom: 16px; }
    .step-block li { font-size: 0.93rem; line-height: 1.7; margin-bottom: 6px; color: var(--text); }
    .step-block li strong { color: var(--heading); }

    /* Screenshot Mock */
    .screenshot-mock {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1.5px solid rgba(9,93,64,0.12);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      margin: 20px 0;
    }
    .screenshot-topbar {
      background: var(--alt);
      padding: 10px 16px;
      display: flex; align-items: center; gap: 8px;
      border-bottom: 1px solid rgba(9,93,64,0.10);
    }
    .ss-dot { width: 11px; height: 11px; border-radius: 50%; }
    .ss-dot.red   { background: #ef4444; }
    .ss-dot.amber { background: #f59e0b; }
    .ss-dot.green { background: #22c55e; }
    .ss-url-bar {
      flex: 1; background: var(--white);
      border-radius: 6px; padding: 5px 12px;
      font-size: 0.76rem; color: var(--muted);
      font-family: monospace;
    }
    .screenshot-body {
      padding: 24px;
      min-height: 160px;
      display: flex; flex-direction: column; gap: 12px;
      position: relative;
    }
    .ss-annotation {
      position: absolute; top: 12px; right: 12px;
      background: var(--cta); color: var(--white);
      font-size: 0.72rem; font-weight: 800;
      padding: 4px 10px; border-radius: 100px;
    }
    .ss-element {
      background: var(--bg);
      border: 1.5px dashed rgba(9,93,64,0.18);
      border-radius: 8px; padding: 14px 16px;
    }
    .ss-element-label { font-size: 0.76rem; font-weight: 800; color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.06em; }
    .ss-element-content { display: flex; flex-direction: column; gap: 5px; }
    .ss-line { height: 8px; background: var(--alt); border-radius: 4px; }
    .ss-arrow {
      display: flex; align-items: center; gap: 8px;
      background: rgba(0,128,96,0.08); border: 1.5px solid var(--cta);
      border-radius: 8px; padding: 10px 14px;
      font-size: 0.82rem; color: var(--cta); font-weight: 700;
    }
    .ss-caption {
      font-size: 0.80rem; color: var(--muted);
      text-align: center; font-style: italic;
      padding: 10px 16px; background: var(--alt);
    }

    /* Pro Tip Box */
    .pro-tip {
      background: var(--tip-bg);
      border: 1.5px solid var(--tip-bd);
      border-left: 4px solid var(--tip-bd);
      border-radius: var(--radius);
      padding: 18px 20px;
      margin: 24px 0;
    }
    .pro-tip-title {
      display: flex; align-items: center; gap: 8px;
      font-size: 0.78rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--tip-tx); margin-bottom: 10px;
    }
    .pro-tip p { font-size: 0.91rem; color: var(--tip-tx); line-height: 1.70; margin-bottom: 0; }

    /* Warning Box */
    .warning-box {
      background: var(--warning-bg);
      border: 1.5px solid var(--warning-bd);
      border-left: 4px solid var(--warning-bd);
      border-radius: var(--radius);
      padding: 18px 20px;
      margin: 24px 0;
    }
    .warning-title {
      display: flex; align-items: center; gap: 8px;
      font-size: 0.78rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--warning-tx); margin-bottom: 10px;
    }
    .warning-box p { font-size: 0.91rem; color: var(--warning-tx); line-height: 1.70; margin-bottom: 0; }

    /* Step Divider */
    .step-divider {
      border: none;
      border-top: 2px dashed rgba(9,93,64,0.15);
      margin: 40px 0;
    }

    /* Code Snippet */
    .code-block {
      background: #1e2a2a;
      border-radius: var(--radius);
      overflow: hidden;
      margin: 20px 0;
      box-shadow: var(--shadow);
    }
    .code-header {
      background: var(--heading);
      padding: 10px 16px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .code-header span { font-size: 0.78rem; font-weight: 700; color: var(--lime); font-family: monospace; }
    .code-copy-btn {
      background: rgba(211,225,98,0.18); color: var(--lime);
      border: 1px solid rgba(211,225,98,0.30); border-radius: 6px;
      font-size: 0.72rem; font-weight: 700; padding: 4px 10px;
      cursor: pointer; font-family: inherit; transition: var(--transition);
    }
    .code-copy-btn:hover { background: rgba(211,225,98,0.30); }
    .code-block pre {
      padding: 20px; overflow-x: auto;
      font-family: 'Courier New', monospace;
      font-size: 0.84rem; line-height: 1.7;
    }
    .code-block code { color: #a7f3d0; }
    .code-comment { color: #6b7280; }
    .code-key { color: #93c5fd; }
    .code-val { color: #fde68a; }

    /* Section 7 — Key Takeaways */
    .takeaways-box {
      background: var(--heading);
      border-radius: var(--radius-lg);
      padding: 28px 30px;
      margin: 40px 0;
      color: var(--white);
    }
    .takeaways-title {
      display: flex; align-items: center; gap: 10px;
      font-size: 0.80rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--lime); margin-bottom: 18px;
    }
    .takeaways-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .takeaways-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.92rem; line-height: 1.5; opacity: 0.90; }
    .takeaway-ico { width: 22px; height: 22px; background: var(--lime); border-radius: 5px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--heading); font-size: 0.60rem; margin-top: 1px; }

    /* Section 8 — Next Steps */
    .next-steps-box {
      background: var(--white);
      border: 1.5px solid rgba(9,93,64,0.12);
      border-radius: var(--radius-lg);
      padding: 26px 28px;
      margin: 32px 0;
      box-shadow: var(--shadow);
    }
    .next-steps-title {
      display: flex; align-items: center; gap: 9px;
      font-size: 0.80rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--cta); margin-bottom: 18px;
    }
    .next-step-item {
      display: flex; align-items: flex-start; gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid var(--alt);
    }
    .next-step-item:last-child { border-bottom: none; padding-bottom: 0; }
    .ns-ico {
      width: 38px; height: 38px; border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0; font-size: 0.88rem;
    }
    .ns-content h5 { font-size: 0.88rem; font-weight: 800; color: var(--heading); margin-bottom: 3px; }
    .ns-content p { font-size: 0.82rem; color: var(--muted); margin-bottom: 6px; }
    .ns-link {
      display: inline-flex; align-items: center; gap: 5px;
      color: var(--cta); font-size: 0.82rem; font-weight: 800; transition: var(--transition);
    }
    .ns-link:hover { gap: 9px; }

    /* =========================================================
       SECTION 9 — AUTHOR BIO
    ========================================================= */
    .author-bio-section {
      background: var(--alt);
      border-radius: var(--radius-lg);
      padding: 28px;
      margin: 32px 0;
    }
    .author-bio-inner { display: flex; align-items: flex-start; gap: 20px; }
    .author-avatar-lg {
      width: 80px; height: 80px; border-radius: 50%; flex-shrink: 0;
      background: linear-gradient(135deg, var(--dark), var(--heading));
      display: flex; align-items: center; justify-content: center;
      font-size: 1.4rem; font-weight: 900; color: var(--lime);
      border: 3px solid var(--white);
      box-shadow: 0 4px 12px rgba(9,93,64,0.15);
      overflow: hidden;
    }
    .author-avatar-lg img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; display: block; }
    .author-bio-content { flex: 1; }
    .author-bio-label {
      font-size: 0.72rem; font-weight: 800; text-transform: uppercase;
      letter-spacing: 0.08em; color: var(--cta); margin-bottom: 6px;
    }
    .author-bio-content h4 { font-size: 1rem; font-weight: 900; color: var(--heading); margin-bottom: 3px; }
    .author-bio-content .role { font-size: 0.82rem; color: var(--muted); margin-bottom: 10px; }
    .author-bio-content p { font-size: 0.88rem; color: var(--text); line-height: 1.70; margin-bottom: 14px; }
    .author-socials { display: flex; gap: 8px; }
    .author-social {
      width: 34px; height: 34px;
      background: var(--white); border-radius: 8px;
      display: flex; align-items: center; justify-content: center;
      color: var(--muted); font-size: 0.84rem; transition: var(--transition);
      box-shadow: 0 2px 6px rgba(9,93,64,0.08);
    }
    .author-social:hover { background: var(--cta); color: var(--white); }

    /* =========================================================
       SECTION 10 — RATE THIS TUTORIAL
    ========================================================= */
    .rate-section {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 1.5px solid rgba(9,93,64,0.10);
      box-shadow: var(--shadow);
      text-align: center;
      margin: 32px 0;
    }
    .rate-section h4 { font-size: 1rem; font-weight: 900; color: var(--heading); margin-bottom: 6px; }
    .rate-section p { font-size: 0.88rem; color: var(--muted); margin-bottom: 18px; }
    .star-rating { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 20px; }
    .star-btn {
      font-size: 1.8rem; color: #d1d5db;
      cursor: pointer; transition: var(--transition);
      background: none; border: none;
      line-height: 1;
    }
    .star-btn:hover,
    .star-btn.hovered,
    .star-btn.selected { color: #f59e0b; transform: scale(1.15); }
    .rate-thumbs { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
    .rate-thumb-btn {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 0.88rem; font-weight: 800;
      padding: 10px 22px; border-radius: 9px;
      cursor: pointer; font-family: inherit; transition: var(--transition); border: none;
    }
    .rate-yes { background: var(--cta); color: var(--white); }
    .rate-yes:hover { background: var(--heading); }
    .rate-no  { background: var(--alt); color: var(--heading); }
    .rate-no:hover  { background: var(--cta); color: var(--white); }

    /* =========================================================
       SECTION 11 — RELATED TUTORIALS
    ========================================================= */
    .related-section { background: var(--alt); padding: 64px 0; }
    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .rt-card {
      background: var(--white); border-radius: var(--radius-lg);
      overflow: hidden; border: 1.5px solid rgba(9,93,64,0.09);
      box-shadow: var(--shadow); transition: var(--transition);
      display: flex; flex-direction: column;
    }
    .rt-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .rt-thumb {
      height: 150px; position: relative;
      display: flex; align-items: center; justify-content: center; overflow: hidden;
    }
    .rt-thumb-icon { font-size: 2.4rem; }
    .rt-badge-row { position: absolute; top: 8px; left: 8px; display: flex; gap: 5px; flex-wrap: wrap; }
    .rt-duration { position: absolute; bottom: 8px; right: 8px; background: rgba(9,93,64,0.75); color: var(--white); font-size: 0.68rem; font-weight: 700; padding: 2px 8px; border-radius: 100px; }
    .rt-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
    .rt-body h4 { font-size: 0.93rem; font-weight: 800; color: var(--heading); margin-bottom: 8px; line-height: 1.3; }
    .rt-body p  { font-size: 0.83rem; color: var(--muted); line-height: 1.55; margin-bottom: 13px; flex: 1; }
    .rt-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; font-size: 0.76rem; color: var(--muted); font-weight: 600; }
    .rt-meta i { color: var(--cta); font-size: 0.65rem; }
    .rt-cta { display: flex; align-items: center; justify-content: center; gap: 7px; background: var(--cta); color: var(--white); font-size: 0.84rem; font-weight: 800; padding: 10px; border-radius: 9px; transition: var(--transition); }
    .rt-cta:hover { background: var(--heading); }

    /* =========================================================
       SECTION 12 — COMMENTS
    ========================================================= */
    .comments-section { background: var(--bg); padding: 64px 0; }
    .comments-box {
      background: var(--white); border-radius: var(--radius-lg);
      padding: 36px; border: 1.5px solid rgba(9,93,64,0.09); box-shadow: var(--shadow);
    }
    .comments-header { margin-bottom: 28px; }
    .comments-header h3 { font-size: 1.15rem; font-weight: 900; color: var(--heading); margin-bottom: 6px; }
    .comments-header p { font-size: 0.88rem; color: var(--muted); }
    .comment-form { display: flex; flex-direction: column; gap: 14px; margin-bottom: 36px; }
    .comment-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .comment-form input,
    .comment-form textarea {
      width: 100%; padding: 12px 14px;
      border: 1.5px solid rgba(9,93,64,0.18); border-radius: 9px;
      background: var(--bg); color: var(--text);
      font-family: inherit; font-size: 0.92rem; outline: none; transition: var(--transition);
    }
    .comment-form input:focus,
    .comment-form textarea:focus { border-color: var(--cta); background: var(--white); box-shadow: 0 0 0 3px rgba(0,128,96,0.10); }
    .comment-form textarea { resize: vertical; min-height: 110px; }
    .comment-form input::placeholder,
    .comment-form textarea::placeholder { color: #aab3bb; }
    .comment-submit {
      display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
      background: var(--cta); color: var(--white); border: none;
      font-family: inherit; font-size: 0.92rem; font-weight: 800;
      padding: 12px 24px; border-radius: 9px; cursor: pointer; transition: var(--transition);
    }
    .comment-submit:hover { background: var(--heading); transform: translateY(-2px); }

    .comment-divider { border: none; border-top: 1px solid var(--alt); margin: 24px 0; }
    .existing-comments h4 { font-size: 0.88rem; font-weight: 800; color: var(--heading); margin-bottom: 20px; }
    .comment-item { display: flex; gap: 14px; margin-bottom: 22px; }
    .ci-avatar {
      width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
      background: var(--alt); display: flex; align-items: center; justify-content: center;
      font-size: 0.80rem; font-weight: 900; color: var(--heading);
    }
    .ci-content { flex: 1; background: var(--bg); border-radius: var(--radius); padding: 14px 16px; }
    .ci-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
    .ci-name { font-size: 0.86rem; font-weight: 800; color: var(--heading); }
    .ci-date { font-size: 0.76rem; color: var(--muted); }
    .ci-stars { color: #f59e0b; font-size: 0.72rem; margin-left: auto; }
    .ci-content p { font-size: 0.88rem; color: var(--text); line-height: 1.70; margin-bottom: 8px; }
    .ci-reply-btn { font-size: 0.78rem; color: var(--cta); font-weight: 700; cursor: pointer; background: none; border: none; font-family: inherit; display: flex; align-items: center; gap: 5px; }
    .ci-reply-btn:hover { text-decoration: underline; }

    /* =========================================================
       SECTION 13 — SUBSCRIBE BOX (inside content)
    ========================================================= */
    .subscribe-box {
      background: linear-gradient(135deg, var(--dark), var(--heading));
      border-radius: var(--radius-lg);
      padding: 32px 36px;
      color: var(--white);
      margin: 32px 0;
      position: relative; overflow: hidden;
    }
    .subscribe-box::before {
      content: '';
      position: absolute; inset: 0;
      background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='40' cy='40' r='3' fill='%23ffffff' fill-opacity='0.025'/%3E%3C/svg%3E");
      pointer-events: none;
    }
    .subscribe-box-inner { position: relative; z-index: 1; }
    .subscribe-box h4 { font-size: 1.1rem; font-weight: 900; margin-bottom: 8px; }
    .subscribe-box h4 span { color: var(--lime); }
    .subscribe-box p { font-size: 0.90rem; opacity: 0.82; line-height: 1.65; margin-bottom: 18px; }
    .subscribe-form { display: flex; gap: 10px; flex-wrap: wrap; }
    .subscribe-form input {
      flex: 1; min-width: 200px; padding: 12px 16px;
      border: 1.5px solid rgba(255,255,255,0.25); border-radius: 9px;
      background: rgba(255,255,255,0.10); color: var(--white);
      font-family: inherit; font-size: 0.92rem; outline: none; transition: var(--transition);
    }
    .subscribe-form input::placeholder { color: rgba(255,255,255,0.50); }
    .subscribe-form input:focus { border-color: var(--lime); background: rgba(255,255,255,0.15); }
    .subscribe-form button {
      background: var(--lime); color: var(--heading);
      border: none; font-family: inherit; font-size: 0.92rem; font-weight: 900;
      padding: 12px 22px; border-radius: 9px; cursor: pointer; transition: var(--transition);
      display: flex; align-items: center; gap: 7px;
    }
    .subscribe-form button:hover { background: var(--lime-light); }
    .subscribe-assurances { display: flex; gap: 16px; margin-top: 12px; flex-wrap: wrap; }
    .sub-assurance { display: flex; align-items: center; gap: 5px; font-size: 0.75rem; opacity: 0.72; }
    .sub-assurance i { color: var(--lime); font-size: 0.65rem; }

    /* =========================================================
       SECTION 14 — BOTTOM CTA BANNER
    ========================================================= */
    .bottom-cta-section {
      background: linear-gradient(135deg, var(--dark) 0%, #0d6b62 55%, var(--heading) 100%);
      padding: 48px 0;
      color: var(--white);
      position: relative; overflow: hidden; text-align: center;
    }
    .bottom-cta-section::before {
      content: ''; position: absolute; inset: 0;
      background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='40' cy='40' r='3' fill='%23ffffff' fill-opacity='0.025'/%3E%3C/svg%3E");
      pointer-events: none;
    }
    .bottom-cta-inner { position: relative; z-index: 1; max-width: 660px; margin: 0 auto; }
    .bottom-pill {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(211,225,98,0.18); border: 1px solid rgba(211,225,98,0.38);
      color: var(--lime); font-size: 0.78rem; font-weight: 800;
      letter-spacing: 0.08em; text-transform: uppercase;
      padding: 6px 16px; border-radius: 100px; margin-bottom: 20px;
    }
    .bottom-cta-inner h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); font-weight: 900; letter-spacing: -0.025em; line-height: 1.15; margin-bottom: 14px; }
    .bottom-cta-inner h2 span { color: var(--lime); }
    .bottom-cta-inner p { font-size: 1rem; opacity: 0.82; line-height: 1.7; margin-bottom: 32px; }
    .bottom-cta-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 26px; }
    .bcc {
      background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14);
      border-radius: var(--radius-lg); padding: 22px 18px; transition: var(--transition);
    }
    .bcc:hover { background: rgba(255,255,255,0.13); }
    .bcc-icon { font-size: 1.4rem; margin-bottom: 12px; }
    .bcc h4 { font-size: 0.98rem; font-weight: 800; margin-bottom: 7px; }
    .bcc p { font-size: 0.85rem; opacity: 0.78; line-height: 1.6; margin-bottom: 14px; }
    .bcc-btn {
      display: flex; align-items: center; justify-content: center; gap: 8px;
      font-size: 0.88rem; font-weight: 800; padding: 11px 20px;
      border-radius: 9px; transition: var(--transition); width: 100%;
    }
    .bcc-primary { background: var(--lime); color: var(--heading); }
    .bcc-primary:hover { background: var(--lime-light); transform: translateY(-2px); }
    .bcc-secondary { background: rgba(255,255,255,0.12); border: 1.5px solid rgba(255,255,255,0.25); color: var(--white); }
    .bcc-secondary:hover { background: rgba(255,255,255,0.20); }
    .bottom-trust-row { display: flex; align-items: center; justify-content: center; gap: 22px; flex-wrap: wrap; }
    .btr-item { display: flex; align-items: center; gap: 7px; font-size: 0.83rem; opacity: 0.80; }
    .btr-item i { color: var(--lime); }

    /* =========================================================
       SIDEBAR
    ========================================================= */
    .sidebar { display: flex; flex-direction: column; gap: 18px; }
    .sidebar-widget {
      background: var(--white); border-radius: var(--radius-lg);
      padding: 20px; border: 1.5px solid rgba(9,93,64,0.09);
      box-shadow: var(--shadow);
    }
    .sidebar-widget.sticky-widget { position: static; }
    .sw-title {
      font-size: 0.72rem; font-weight: 900;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--heading); margin-bottom: 14px;
      display: flex; align-items: center; gap: 7px;
      padding-bottom: 10px; border-bottom: 1px solid var(--alt);
    }
    .sw-title i { color: var(--cta); font-size: 0.80rem; }

    /* TOC Sidebar */
    .sb-toc-list { list-style: none; display: flex; flex-direction: column; gap: 3px; }
    .sb-toc-list a {
      display: flex; align-items: center; gap: 8px;
      font-size: 0.84rem; font-weight: 600; color: var(--muted);
      padding: 6px 8px; border-radius: 8px; transition: var(--transition);
    }
    .sb-toc-list a:hover,
    .sb-toc-list a.active { color: var(--cta); background: rgba(0,128,96,0.07); }
    .sb-toc-list a.active { font-weight: 800; }
    .toc-step-num {
      width: 20px; height: 20px; border-radius: 5px;
      background: var(--alt); color: var(--heading);
      font-size: 0.65rem; font-weight: 900;
      display: flex; align-items: center; justify-content: center; flex-shrink: 0;
      transition: var(--transition);
    }
    .sb-toc-list a.active .toc-step-num { background: var(--cta); color: var(--white); }

    /* Progress Tracker */
    .toc-progress-wrap { margin-top: 12px; }
    .toc-progress-label { font-size: 0.75rem; color: var(--muted); font-weight: 600; margin-bottom: 6px; display: flex; justify-content: space-between; }
    .toc-progress-bar { height: 6px; background: var(--alt); border-radius: 10px; overflow: hidden; }
    .toc-progress-fill { height: 100%; background: var(--cta); border-radius: 10px; width: 0%; transition: width 0.3s ease; }

    /* Quick Stats */
    .sb-stats { display: flex; flex-direction: column; gap: 8px; }
    .sb-stat-row { display: flex; align-items: center; justify-content: space-between; font-size: 0.83rem; }
    .sb-stat-label { display: flex; align-items: center; gap: 6px; color: var(--muted); font-weight: 600; }
    .sb-stat-label i { color: var(--cta); font-size: 0.70rem; }
    .sb-stat-val { font-weight: 800; color: var(--heading); }

    /* Tools Needed */
    .sb-tools-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
    .sb-tool { display: flex; align-items: center; gap: 10px; font-size: 0.84rem; }
    .sb-tool-icon { width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 0.80rem; flex-shrink: 0; }
    .sb-tool strong { font-weight: 800; color: var(--text); display: block; }
    .sb-tool span { font-size: 0.74rem; color: var(--muted); }

    /* Free Download Widget */
    .sb-download {
      background: var(--heading); border-radius: var(--radius-lg);
      padding: 18px; color: var(--white);
    }
    .sb-download .sw-title { border-bottom-color: rgba(255,255,255,0.12); color: var(--lime); }
    .sb-download .sw-title i { color: var(--lime); }
    .sb-download h5 { font-size: 0.90rem; font-weight: 800; margin-bottom: 6px; }
    .sb-download p { font-size: 0.80rem; opacity: 0.80; line-height: 1.60; margin-bottom: 14px; }
    .sb-download-btn {
      display: flex; align-items: center; justify-content: center; gap: 7px;
      background: var(--lime); color: var(--heading);
      font-size: 0.84rem; font-weight: 900;
      padding: 11px; border-radius: 9px; transition: var(--transition); width: 100%;
    }
    .sb-download-btn:hover { background: var(--lime-light); }

    /* Audit CTA Widget */
    .sb-audit { background: var(--alt); border-radius: var(--radius-lg); padding: 18px; }
    .sb-audit .sw-title { color: var(--heading); }
    .sb-audit h5 { font-size: 0.90rem; font-weight: 800; color: var(--heading); margin-bottom: 6px; }
    .sb-audit p { font-size: 0.80rem; color: var(--muted); line-height: 1.60; margin-bottom: 14px; }
    .sb-audit-btn {
      display: flex; align-items: center; justify-content: center; gap: 7px;
      background: var(--cta); color: var(--white);
      font-size: 0.84rem; font-weight: 900;
      padding: 11px; border-radius: 9px; transition: var(--transition); width: 100%;
    }
    .sb-audit-btn:hover { background: var(--heading); }

    /* Related in Sidebar */
    .sb-related-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .sb-related-item { display: flex; align-items: flex-start; gap: 10px; }
    .sb-related-thumb {
      width: 46px; height: 46px; border-radius: 8px;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.1rem; flex-shrink: 0;
    }
    .sb-related-content h5 { font-size: 0.82rem; font-weight: 800; color: var(--heading); margin-bottom: 3px; line-height: 1.3; }
    .sb-related-content span { font-size: 0.74rem; color: var(--muted); }
    .sb-related-item a { display: block; transition: var(--transition); }
    .sb-related-item a:hover h5 { color: var(--cta); }

    /* =========================================================
       SECTION 15 — FULL FOOTER
    ========================================================= */
    .site-footer { background: var(--dark); color: rgba(255,255,255,0.75); padding: 64px 0 0; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .footer-brand-logo { font-size: 1.25rem; font-weight: 900; color: var(--white); margin-bottom: 14px; }
    .footer-brand-logo .acc { color: var(--lime); }
    .footer-col p { font-size: 0.86rem; line-height: 1.7; margin-bottom: 20px; }
    .footer-col h4 { font-size: 0.88rem; font-weight: 800; color: var(--white); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.06em; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 9px; }
    .footer-links a { font-size: 0.86rem; color: rgba(255,255,255,0.65); display: flex; align-items: center; gap: 8px; transition: var(--transition); }
    .footer-links a:hover { color: var(--lime); }
    .footer-links a i { font-size: 0.70rem; color: rgba(255,255,255,0.30); }
    .footer-nl-input { display: flex; margin-bottom: 10px; border-radius: 9px; overflow: hidden; }
    .footer-nl-input input { flex: 1; padding: 11px 14px; border: none; background: rgba(255,255,255,0.10); color: var(--white); font-family: inherit; font-size: 0.86rem; outline: none; }
    .footer-nl-input input::placeholder { color: rgba(255,255,255,0.40); }
    .footer-nl-input button { background: var(--cta); color: var(--white); border: none; padding: 0 16px; font-size: 0.82rem; font-weight: 700; cursor: pointer; font-family: inherit; transition: var(--transition); }
    .footer-nl-input button:hover { background: var(--heading); }
    .footer-socials { display: flex; gap: 10px; margin-top: 18px; }
    .footer-social { width: 34px; height: 34px; background: rgba(255,255,255,0.08); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.65); font-size: 0.86rem; transition: var(--transition); }
    .footer-social:hover { background: var(--cta); color: var(--white); }
    .footer-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 20px; }
    .footer-stat { background: rgba(255,255,255,0.06); border-radius: var(--radius); padding: 12px; text-align: center; }
    .footer-stat strong { display: block; font-size: 1.2rem; font-weight: 900; color: var(--lime); }
    .footer-stat span { font-size: 0.72rem; color: rgba(255,255,255,0.55); }
    .footer-bottom { padding: 20px 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
    .footer-bottom p { font-size: 0.82rem; color: rgba(255,255,255,0.50); }
    .footer-legal { display: flex; gap: 18px; list-style: none; }
    .footer-legal a { font-size: 0.82rem; color: rgba(255,255,255,0.50); transition: var(--transition); }
    .footer-legal a:hover { color: var(--lime); }

    /* =========================================================
       RESPONSIVE
    ========================================================= */
    @media (max-width: 1024px) {
      .tutorial-layout { grid-template-columns: 1fr 280px; gap: 28px; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .tutorial-layout { grid-template-columns: 1fr; }
      .sidebar { display: none; }
      .toc-mobile { display: block; }
      .related-grid { grid-template-columns: 1fr; }
      .comment-form-row { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .nav-links { display: none; }
      .bottom-cta-cards { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto 26px; }
      .author-bio-inner { flex-direction: column; }
      .header-meta-row { gap: 12px; }
      .hm-separator { display: none; }
    }
    @media (max-width: 540px) {
      .share-row { flex-wrap: wrap; }
      .bottom-trust-row { gap: 14px; }
    }
  

.announcement-bar { padding: 0 !important; margin: 0 !important; }
.announcement-bar__inner { height: 40px; display: flex; align-items: center; justify-content: center; gap: 12px; position: relative; }