*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg:          #f4f7fa;
      --surface:     #ffffff;
      --accent:      #61dafb;
      --accent2:     #0070f3;
      --gradient:    linear-gradient(135deg, #61dafb 0%, #0070f3 100%);
      --text:        #1a1a1a;
      --text-md:     #4a5568;
      --text-sm:     #718096;
      --border:      rgba(0,0,0,0.08);
      --radius:      12px;
      --shadow:      0 2px 12px rgba(0,0,0,0.06);
      --shadow-md:   0 6px 28px rgba(0,0,0,0.10);
    }

    html { scroll-behavior: smooth; overflow-x: hidden; max-width: 100%; }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
      max-width: 100%;
    }

    h1,h2,h3,h4,h5 {
      font-family: 'Space Grotesk', sans-serif;
      line-height: 1.2;
    }

    a { text-decoration: none; color: inherit; }
    img { max-width: 100%; display: block; }

    /* ── LAYOUT ── */
    .container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
    .section { padding: 96px 0; position: relative; overflow: hidden; }
    .text-center { text-align: center; }

    /* ── UTILITIES ── */
    .grad-text {
      background: var(--gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .eyebrow {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--accent2);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: clamp(30px, 4vw, 46px);
      font-weight: 700;
      margin-bottom: 14px;
    }
    .section-sub {
      font-size: 16px;
      color: var(--text-md);
      max-width: 560px;
    }

    /* fade-in animation */
    .fade-in { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
    .fade-in.visible { opacity: 1; transform: none; }

    /* ── BUTTONS ── */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 11px 22px;
      border-radius: var(--radius);
      font-family: 'Inter', sans-serif;
      font-weight: 600;
      font-size: 14px;
      cursor: pointer;
      transition: all .22s ease;
      border: none;
    }
    .btn-grad {
      background: var(--gradient);
      color: #fff;
      box-shadow: 0 4px 14px rgba(0,112,243,.28);
    }
    .btn-grad:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0,112,243,.38); color: #fff; }
    .btn-outline {
      background: transparent;
      color: var(--text);
      border: 1.5px solid rgba(0,0,0,0.14);
    }
    .btn-outline:hover { border-color: var(--accent2); color: var(--accent2); background: rgba(0,112,243,.04); }
    .btn-sm { padding: 8px 16px; font-size: 13px; }
    .btn-block { width: 100%; justify-content: center; padding: 14px; font-size: 15px; }

    /* ── BLOB DECORATIONS ── */
    .blob {
      position: absolute;
      border-radius: 50%;
      pointer-events: none;
    }
    .blob-r {
      right: -120px; bottom: -80px;
      width: 480px; height: 480px;
      background: radial-gradient(ellipse, rgba(97,218,251,.14) 0%, transparent 70%);
    }
    .blob-l {
      left: -120px; top: 0;
      width: 420px; height: 420px;
      background: radial-gradient(ellipse, rgba(0,112,243,.08) 0%, transparent 70%);
    }

    /* ── NAVBAR ── */
    .navbar {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      height: 64px;
      background: rgba(238,242,247,.85);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid transparent;
      transition: all .3s;
    }
    .navbar.scrolled {
      background: rgba(255,255,255,.96);
      border-bottom-color: var(--border);
      box-shadow: var(--shadow);
    }
    .nav-inner {
      max-width: 1180px; margin: 0 auto; padding: 0 24px;
      height: 100%; display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo img { height: 34px; }
    .nav-links {
      display: flex; align-items: center; gap: 4px; list-style: none;
    }
    .nav-links a {
      font-size: 14px; font-weight: 500; color: var(--text-md);
      padding: 6px 12px; border-radius: 8px;
      transition: color .2s;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--accent2); }
    .nav-links a.active::after {
      content: '';
      position: absolute; bottom: -2px; left: 12px; right: 12px;
      height: 2px; background: var(--gradient); border-radius: 2px;
    }
    .nav-burger {
      display: none; background: none; border: none;
      font-size: 20px; color: var(--text); cursor: pointer; padding: 4px;
    }

    /* ── HERO ── */
    #home {
      min-height: 100vh; display: flex; align-items: center;
      text-align: center; padding-top: 64px; position: relative;
      overflow: hidden;
    }
    #globeCanvas {
      position: absolute; inset: 0;
      width: 100%; height: 100%;
      pointer-events: none;
    }

    .hero-content { position: relative; z-index: 2; max-width: 820px; margin: 0 auto; }

    .hero-mark {
      display: inline-block; margin-bottom: 28px;
    }
    .hero-mark img {
      height: 80px;
      opacity: 0.72;
      animation: logo-pulse 3s ease-in-out infinite;
    }
    @keyframes logo-pulse {
      0%   { opacity: 0.72; transform: scale(1);    filter: drop-shadow(0 0 0px rgba(0,112,243,0)); }
      50%  { opacity: 0.90; transform: scale(1.04); filter: drop-shadow(0 0 18px rgba(0,112,243,0.30)); }
      100% { opacity: 0.72; transform: scale(1);    filter: drop-shadow(0 0 0px rgba(0,112,243,0)); }
    }

    .hero-h1 {
      font-size: clamp(38px, 6vw, 68px);
      font-weight: 800;
      letter-spacing: -.02em;
      margin-bottom: 14px;
    }

    .hero-pill {
      display: inline-flex; align-items: center;
      justify-content: center; flex-wrap: wrap;
      padding: 10px 28px;
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: 100px;
      font-size: 14px; font-weight: 600; color: var(--text);
      margin-bottom: 18px;
      box-shadow: var(--shadow);
      max-width: 100%;
      text-align: center;
      line-height: 1.7;
    }
    @media (max-width: 767px) {
      .hero-pill {
        font-size: 13px;
        flex-wrap: nowrap;
        white-space: nowrap;
        padding: 9px 18px;
      }
      .hero-pill .hide-on-mobile { display: none; }
      /* Decorative blobs: ~20% more transparent on small screens */
      .blob { opacity: 0.45 !important; }
    }

    .hero-desc {
      font-size: 16px; color: var(--text-md);
      max-width: 580px; margin: 0 auto 28px;
      line-height: 1.75;
    }

    .hero-chips {
      display: flex; flex-wrap: wrap; justify-content: center;
      gap: 10px; margin-bottom: 32px;
    }
    .hero-tagline {
      max-width: 720px;
      margin: 0 auto 32px;
      font-size: 16px;
      line-height: 1.65;
      color: var(--text-muted, #555);
      text-align: center;
    }

    /* Clients: 6 visible slots, each with 2 stacked imgs that crossfade.
       Both imgs are absolutely centered in the slot, so position never shifts. */
    .clients-row {
      display: flex; justify-content: space-between; align-items: center;
      gap: 48px;
      max-width: 1180px;
      margin: 0 auto;
      flex-wrap: nowrap;
    }
    .client-slot {
      flex: 1 1 0;
      height: 56px;
      position: relative;
    }
    .client-logo {
      position: absolute;
      top: 50%; left: 50%;
      max-height: 48px;
      max-width: 168px;
      width: auto;
      height: auto;
      object-fit: contain;
      opacity: 0;
      transform: translate(-50%, -50%) scale(1);
      transition: opacity 1400ms cubic-bezier(.45,.05,.55,.95);
      animation: clientPulse 2.6s ease-in-out infinite;
    }
    .client-logo.is-active { opacity: 0.75; }
    @keyframes clientPulse {
      0%, 100% { transform: translate(-50%, -50%) scale(1); }
      50%      { transform: translate(-50%, -50%) scale(1.05); }
    }
    @media (max-width: 767px) {
      .clients-row { gap: 20px; flex-wrap: nowrap; justify-content: space-between; }
      .client-slot { flex: 1 1 0; height: 44px; }
      .client-slot:nth-child(n+4) { display: none; }
      .client-logo { max-height: 40px; max-width: 110px; }
    }
    .chip {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 8px 16px;
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: 100px;
      font-size: 13px; font-weight: 500; color: var(--text);
      box-shadow: 0 1px 4px rgba(0,0,0,.04);
      transition: all .2s;
    }
    .chip:hover { border-color: var(--accent2); box-shadow: 0 2px 10px rgba(0,112,243,.12); }
    .chip i { font-size: 15px; }

    .hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

    .scroll-hint {
      position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
      display: flex; flex-direction: column; align-items: center; gap: 4px;
      color: var(--text-sm); font-size: 11px; font-weight: 500;
      animation: bounce 2.2s ease-in-out infinite;
    }
    @keyframes bounce {
      0%,100% { transform: translateX(-50%) translateY(0); }
      50%      { transform: translateX(-50%) translateY(7px); }
    }

    /* ── ABOUT ── */
    #about .about-grid {
      display: grid; grid-template-columns: 3fr 2fr; gap: 56px; align-items: start;
    }
    .about-title { font-size: clamp(28px, 3.5vw, 44px); font-weight: 700; margin-bottom: 20px; }
    .about-body p { font-size: 15px; color: var(--text-md); line-height: 1.8; margin-bottom: 14px; }

    .spec-card {
      background: rgba(97,218,251,.07);
      border: 1.5px solid rgba(97,218,251,.22);
      border-radius: var(--radius);
      padding: 26px; margin-top: 22px;
    }
    .spec-card h4 { font-size: 15px; font-weight: 700; margin-bottom: 14px; }
    .spec-list { list-style: none; }
    .spec-list li {
      font-size: 14px; color: var(--text-md);
      padding: 7px 0;
      border-bottom: 1px solid rgba(0,0,0,.05);
      display: flex; align-items: flex-start; gap: 8px;
    }
    .spec-list li:last-child { border-bottom: none; }
    .spec-list li::before { content: '→'; color: var(--accent); font-weight: 700; flex-shrink: 0; }

    .stat-col { display: flex; flex-direction: column; gap: 14px; }
    .stat-card {
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      padding: 22px 24px; text-align: center;
      box-shadow: var(--shadow);
      transition: all .28s;
    }

    /* Top-Rated Agency Award badge (Upwork-style) */
    .stat-card-award {
      background: linear-gradient(135deg, #f3fff0 0%, #e6fce0 100%);
      border-color: rgba(20, 168, 0, 0.25);
    }
    .stat-card-award:hover {
      border-color: rgba(20, 168, 0, 0.55);
      box-shadow: 0 4px 18px rgba(20, 168, 0, 0.18);
    }
    .upwork-badge {
      display: inline-flex; align-items: center; gap: 10px;
      margin-bottom: 8px;
    }
    .upwork-badge .ub-icon {
      width: 42px; height: 42px; border-radius: 50%;
      background: #14a800; color: #fff;
      display: flex; align-items: center; justify-content: center;
      font-size: 20px;
      box-shadow: 0 4px 12px rgba(20, 168, 0, 0.32);
    }
    .upwork-badge .ub-text { text-align: left; line-height: 1.15; }
    .upwork-badge .ub-label {
      font-family: 'Space Grotesk', sans-serif;
      font-size: 17px; font-weight: 800; letter-spacing: -0.01em;
      color: #14a800;
    }
    .upwork-badge .ub-rating { color: #f5a623; font-size: 12px; letter-spacing: 1px; margin-top: 2px; }
    .stat-card:hover {
      border-color: rgba(97,218,251,.5);
      box-shadow: 0 4px 18px rgba(97,218,251,.14);
      transform: translateY(-2px);
    }
    .stat-num {
      font-family: 'Space Grotesk', sans-serif;
      font-size: 38px; font-weight: 800;
      background: var(--gradient);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .stat-sfx {
      font-family: 'Space Grotesk', sans-serif;
      font-size: 26px; font-weight: 800;
      background: var(--gradient);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .stat-lbl { font-size: 12px; color: var(--text-sm); margin-top: 4px; }

    /* ── SERVICES (Skills-style cards) ── */
    #services { background: var(--surface); }
    .services-grid {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px;
    }
    .svc-card {
      background: var(--bg);
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow);
      transition: all .28s;
    }
    .svc-card:hover {
      border-color: rgba(0,112,243,.25);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .svc-header {
      display: flex; align-items: center; gap: 12px; margin-bottom: 18px;
    }
    .svc-icon {
      width: 32px; height: 32px;
      object-fit: contain;
      flex-shrink: 0;
    }
    .svc-header h3 { font-size: 19px; font-weight: 700; }
    .svc-header h3 a { color: inherit; }
    .tech-chips { display: flex; flex-wrap: wrap; gap: 7px; }
    .tch {
      display: inline-flex; align-items: center; gap: 5px;
      padding: 5px 11px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 100px;
      font-size: 12px; font-weight: 500; color: var(--text-md);
      transition: all .2s;
    }
    .tch:hover { border-color: var(--accent2); color: var(--accent2); }

    /* ── PORTFOLIO ── */
    #portfolio .proj-grid {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px;
    }
    .proj-card {
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: all .28s;
    }
    .proj-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .proj-card { text-decoration: none; color: inherit; display: block; }
    .proj-img { width: 100%; height: 210px; object-fit: cover; }
    /* Live dashboard preview — iframe scaled to fit the card cover area */
    .proj-preview {
      position: relative;
      width: 100%;
      padding-bottom: 56.25%;     /* 16:9 */
      overflow: hidden;
      background: #0b1628;
    }
    .proj-preview-wrap {
      position: absolute;
      inset: 0;
    }
    .proj-preview-wrap iframe {
      position: absolute;
      top: 0; left: 0;
      width: 1280px; height: 720px;
      transform-origin: top left;
      border: none;
      pointer-events: none;
      background: #fff;
    }
    /* Shield over iframe so click/hover events fall through to the card link */
    .proj-preview-wrap::after {
      content: '';
      position: absolute; inset: 0;
      z-index: 5;
    }
    .proj-preview-skel {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, #14213d 0%, #1a2a4d 50%, #14213d 100%);
      background-size: 200% 100%;
      animation: projShimmer 1.6s linear infinite;
      z-index: 1;
    }
    @keyframes projShimmer {
      0%   { background-position: 200% 0; }
      100% { background-position: -200% 0; }
    }
    .proj-body { padding: 22px; }
    .proj-role { font-size: 12px; font-weight: 700; color: var(--accent2); margin-bottom: 5px; letter-spacing: .04em; }
    .proj-title { font-size: 19px; font-weight: 700; margin-bottom: 9px; }
    .proj-desc { font-size: 13px; color: var(--text-md); line-height: 1.65; margin-bottom: 14px; }
    .proj-tags { display: flex; flex-wrap: wrap; gap: 6px; }
    .proj-tag {
      padding: 3px 9px;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 100px;
      font-size: 11px; font-weight: 500; color: var(--text-md);
    }

    /* ── WHY / TIMELINE ── */
    #why { background: var(--surface); }
    .tl {
      position: relative;
      max-width: 900px; margin: 0 auto;
    }
    .tl::before {
      content: '';
      position: absolute; left: 50%; top: 0; bottom: 0;
      width: 2px;
      background: linear-gradient(to bottom, #61dafb, #0070f3);
      transform: translateX(-50%);
    }
    .tl-item {
      display: grid;
      grid-template-columns: 1fr 28px 1fr;
      gap: 26px;
      align-items: start;
      margin-bottom: 44px;
    }
    .tl-item:last-child { margin-bottom: 0; }
    .tl-node {
      width: 26px; height: 26px;
      border-radius: 50%;
      background: var(--surface);
      border: 3px solid var(--accent);
      box-shadow: 0 0 0 5px rgba(97,218,251,.18);
      margin-top: 18px; flex-shrink: 0;
    }
    .tl-content {
      background: var(--bg);
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow);
    }
    .tl-content h3 { font-size: 17px; font-weight: 700; margin-bottom: 3px; }
    .tl-content .tl-co { font-size: 13px; font-weight: 700; color: var(--accent2); margin-bottom: 8px; }
    .tl-content .tl-meta {
      display: flex; gap: 16px; flex-wrap: wrap;
      font-size: 12px; color: var(--text-sm); margin-bottom: 10px;
    }
    .tl-content .tl-meta i { color: var(--accent); margin-right: 3px; }
    .tl-content p { font-size: 13px; color: var(--text-md); line-height: 1.7; }
    .tl-content .proj-tags { margin-top: 12px; }
    .tl-empty { /* placeholder, keeps grid symmetric */ }

    /* ── TESTIMONIALS ── */
    #testimonials .tst-grid {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px;
    }
    .tst-card {
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow);
      transition: all .28s;
    }
    .tst-card:hover { border-color: rgba(97,218,251,.4); box-shadow: 0 4px 18px rgba(97,218,251,.1); }
    .tst-quote { font-size: 56px; line-height: .4; color: var(--accent); opacity: .35; font-family: Georgia, serif; margin-bottom: 14px; }
    .tst-text { font-size: 15px; color: var(--text-md); line-height: 1.75; font-style: italic; margin-bottom: 22px; }
    .tst-footer { display: flex; justify-content: space-between; align-items: center; }
    .tst-name { font-size: 14px; font-weight: 700; }
    .tst-org  { font-size: 12px; color: var(--text-sm); }
    .tst-stars { color: #f59e0b; font-size: 13px; }

    /* ── CONTACT ── */
    .grecaptcha-badge { visibility: hidden !important; }
    .recaptcha-note {
      font-size: 11px; color: var(--text-sm);
      margin-top: 10px; line-height: 1.5;
    }
    .recaptcha-note a { color: var(--text-sm); text-decoration: underline; }

    #contact .ct-grid {
      display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; align-items: start;
    }
    .ct-info h3 { font-size: 19px; font-weight: 700; margin-bottom: 18px; }
    .ct-subtitle {
      font-size: 13px; font-weight: 500; color: var(--text-sm);
      margin-bottom: 5px;
    }
    .ct-item {
      display: flex; align-items: center; gap: 16px;
      padding: 14px 18px;
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      margin-bottom: 10px;
      box-shadow: var(--shadow);
      transition: all .22s;
      color: var(--text);
    }
    .ct-item:hover { border-color: var(--accent2); box-shadow: 0 4px 14px rgba(0,112,243,.1); }
    .ct-ico {
      width: 38px; height: 38px; border-radius: 8px; flex-shrink: 0;
      display: flex; align-items: center; justify-content: center;
      background: rgba(97,218,251,.1); color: var(--accent2); font-size: 15px;
    }
    .ct-lbl { font-size: 11px; color: var(--text-sm); }
    .ct-val { font-size: 13px; font-weight: 600; color: var(--accent2); }

    .social-row { display: flex; gap: 10px; margin-top: 22px; }
    .soc-btn {
      width: 42px; height: 42px; border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      background: var(--surface);
      border: 1.5px solid var(--border);
      color: var(--text-md); font-size: 17px;
      box-shadow: var(--shadow);
      transition: all .2s;
    }
    .soc-btn:hover { border-color: var(--accent2); color: var(--accent2); }

    .ct-form h3 { font-size: 19px; font-weight: 700; margin-bottom: 18px; }
    .f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .f-grp { margin-bottom: 14px; }
    .f-lbl { display: block; font-size: 13px; font-weight: 500; color: var(--text-md); margin-bottom: 5px; }
    .f-inp {
      width: 100%; padding: 11px 14px;
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: 8px;
      font-size: 14px; color: var(--text);
      font-family: 'Inter', sans-serif;
      outline: none; transition: border-color .2s;
    }
    .f-inp:focus { border-color: var(--accent2); }
    .f-inp::placeholder { color: #a0aec0; }
    .f-inp.error { border-color: #fc8181; background: #fff5f5; }
    textarea.f-inp { resize: vertical; min-height: 110px; }
    select.f-inp { cursor: pointer; }

    .f-msg { margin-top: 12px; padding: 10px 14px; border-radius: 8px; font-size: 13px; font-weight: 500; }
    .f-msg.ok  { background: #f0fff4; color: #276749; border: 1px solid #9ae6b4; }
    .f-msg.err { background: #fff5f5; color: #c53030; border: 1px solid #fc8181; }

    /* ── FOOTER ── */
    footer { background: #141428; color: #718096; padding: 60px 0 24px; }
    .ft-grid {
      display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px;
    }
    .ft-about p { font-size: 13px; line-height: 1.75; margin-top: 14px; color: #718096; }
    .ft-col h4 { font-size: 14px; font-weight: 700; color: #e2e8f0; margin-bottom: 14px; }
    .ft-col ul { list-style: none; }
    .ft-col ul li { margin-bottom: 9px; }
    .ft-col ul li a { font-size: 13px; color: #718096; transition: color .2s; }
    .ft-col ul li a:hover { color: var(--accent); }
    .ft-bottom {
      border-top: 1px solid rgba(255,255,255,.07);
      padding-top: 22px; text-align: center; font-size: 12px; color: #4a5568;
    }
    .ft-social { display: flex; gap: 8px; margin-top: 14px; }
    .ft-soc {
      width: 34px; height: 34px; border-radius: 7px;
      display: flex; align-items: center; justify-content: center;
      background: rgba(255,255,255,.05);
      color: #718096; font-size: 14px; transition: all .2s;
    }
    .ft-soc:hover { background: rgba(97,218,251,.14); color: var(--accent); }

    /* ── SCROLL-TO-TOP ── */
    .go-top {
      position: fixed; bottom: 24px; right: 24px; z-index: 200;
      width: 44px; height: 44px; border-radius: 50%;
      background: var(--gradient);
      color: #fff; font-size: 16px;
      display: flex; align-items: center; justify-content: center;
      box-shadow: 0 4px 14px rgba(0,112,243,.3);
      border: none; cursor: pointer;
      opacity: 0; pointer-events: none;
      transition: all .3s;
    }
    .go-top.show { opacity: 1; pointer-events: all; }
    .go-top:hover { transform: translateY(-3px); box-shadow: 0 7px 20px rgba(0,112,243,.4); }

    /* ── RESPONSIVE ── */
    @media (max-width: 900px) {
      #about .about-grid   { grid-template-columns: 1fr; }
      #services .services-grid { grid-template-columns: 1fr; }
      #portfolio .proj-grid { grid-template-columns: 1fr; }
      #contact .ct-grid    { grid-template-columns: 1fr; }
      .ft-grid             { grid-template-columns: 1fr 1fr; }
      #testimonials .tst-grid { grid-template-columns: 1fr; }

      /* timeline collapses to left-side */
      .tl::before { left: 13px; }
      .tl-item {
        grid-template-columns: 1fr !important;
        padding-left: 48px;
        position: relative;
      }
      .tl-node { position: absolute; left: 0; top: 16px; }
      .tl-empty { display: none; }
    }

    @media (max-width: 600px) {
      .nav-links        { display: none; }
      .nav-links.open   {
        display: flex; flex-direction: column;
        position: fixed; top: 64px; left: 0; right: 0;
        background: rgba(255,255,255,.98);
        padding: 20px 24px;
        border-top: 1px solid var(--border);
        box-shadow: 0 8px 28px rgba(0,0,0,.1);
      }
      .nav-burger       { display: block; }
      .hero-mark        { display: none; }
      .hero-content     { padding-top: 48px; }
      .hero-h1          { font-size: 34px; }
      .scroll-hint      { display: none; }
      .hero-actions     { flex-direction: column; align-items: center; }
      .f-row            { grid-template-columns: 1fr; }
      .ft-grid          { grid-template-columns: 1fr; }
    }