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

    :root {
      --green: #00C587;
      --green-dark: #00a872;
      --green-glow: rgba(0, 197, 135, 0.18);
      --navy: #191544;
      --navy-light: #242055;
      --text: #1a1a2e;
      --text-muted: #6b6b80;
      --bg: #ffffff;
      --bg-dark: #0d0b1e;
      --bg-card: #f7f8fc;
      --border: rgba(25, 21, 68, 0.10);
      --radius-sm: 10px;
      --radius: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 12px rgba(25,21,68,0.07);
      --shadow: 0 8px 32px rgba(25,21,68,0.10);
      --shadow-lg: 0 20px 60px rgba(25,21,68,0.14);
      --max-w: 1140px;
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      color: var(--text);
      background: var(--bg-dark);
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

    .container {
      width: min(var(--max-w), calc(100% - 48px));
      margin: 0 auto;
    }

    ::-webkit-scrollbar { width: 5px; }
    ::-webkit-scrollbar-track { background: transparent; }
    ::-webkit-scrollbar-thumb { background: var(--green); border-radius: 99px; }

    /* ─── NAV ─── */
    .nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 200;
      height: 68px;
      display: flex; align-items: center;
      padding: 0 max(24px, calc((100vw - var(--max-w)) / 2));
      transition: background .35s, box-shadow .35s;
    }
    .nav.scrolled {
      background: rgba(13,11,30,0.97);
      backdrop-filter: blur(16px);
      box-shadow: 0 1px 0 rgba(255,255,255,0.06), 0 2px 12px rgba(0,0,0,0.3);
    }
    .nav-inner {
      width: 100%;
      display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo { display: flex; align-items: center; gap: 10px; }
    .nav-logo img { height: 52px; width: auto; transition: transform .2s; filter: brightness(0) invert(1); opacity: 0.9; }
    .nav-logo img:hover { transform: scale(1.04); }

    .nav-links {
      display: flex; align-items: center; gap: 2rem; list-style: none;
    }
    .nav-links a {
      font-size: 0.875rem; font-weight: 500; color: rgba(255,255,255,0.55);
      transition: color .2s;
    }
    .nav-links a:hover { color: var(--green); }

    .nav-cta {
      background: var(--green);
      color: #fff;
      font-size: 0.875rem; font-weight: 600;
      padding: 0.5rem 1.4rem;
      border-radius: 50px;
      transition: background .2s, transform .2s, box-shadow .2s;
      box-shadow: 0 4px 16px rgba(0,197,135,0.30);
    }
    .nav-cta:hover {
      background: var(--green-dark);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(0,197,135,0.38);
    }

    .nav-toggle {
      display: none; border: none; background: transparent;
      color: rgba(255,255,255,0.8); font-size: 1.5rem; cursor: pointer;
      padding: 4px;
    }

    .nav-mobile {
      display: none;
      position: fixed; top: 68px; left: 0; right: 0;
      background: rgba(13,11,30,0.98);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255,255,255,0.06);
      padding: 1.5rem 24px 2rem;
      z-index: 199;
      flex-direction: column; gap: 1rem;
    }
    .nav-mobile.open { display: flex; }
    .nav-mobile a {
      font-size: 1rem; font-weight: 500; color: rgba(255,255,255,0.55);
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      transition: color .2s;
    }
    .nav-mobile a:last-child { border-bottom: none; }
    .nav-mobile a:hover { color: var(--green); }
    .nav-mobile .nav-cta {
      display: inline-block; text-align: center; margin-top: 0.5rem;
      border-bottom: none;
    }

    /* ─── HERO ─── */
    .hero {
      min-height: 100svh;
      display: flex; align-items: center;
      padding: 100px 0 80px;
      background: var(--bg-dark);
      position: relative; overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute; top: -80px; right: -100px;
      width: 700px; height: 700px;
      background: radial-gradient(circle, rgba(0,197,135,0.07) 0%, transparent 65%);
      pointer-events: none;
    }
    .hero::after {
      content: '';
      position: absolute; bottom: -150px; left: -100px;
      width: 600px; height: 600px;
      background: radial-gradient(circle, rgba(83,74,183,0.09) 0%, transparent 65%);
      pointer-events: none;
    }

    .hero-grid-bg {
      position: absolute; inset: 0; pointer-events: none;
      background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: radial-gradient(ellipse 90% 80% at 50% 50%, black 30%, transparent 100%);
    }

    .hero-inner {
      position: relative; z-index: 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: clamp(32px, 5vw, 80px);
      width: min(var(--max-w), calc(100% - 48px));
      margin: 0 auto;
    }

    /* ─── GLOBE SIDE ─── */
    .globe-side {
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      position: relative;
    }

    #globe-canvas {
      width: 100%;
      max-width: 520px;
      aspect-ratio: 1;
      border-radius: 50%;
      cursor: grab;
    }
    #globe-canvas:active { cursor: grabbing; }

    .globe-glow {
      position: absolute;
      width: 70%; height: 70%;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0,197,135,0.12) 0%, transparent 70%);
      pointer-events: none;
      animation: globePulse 4s ease-in-out infinite;
    }
    @keyframes globePulse {
      0%, 100% { transform: scale(1); opacity: 0.7; }
      50% { transform: scale(1.08); opacity: 1; }
    }

    .globe-label {
      margin-top: 1.5rem;
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(0,197,135,0.08);
      border: 1px solid rgba(0,197,135,0.20);
      color: rgba(255,255,255,0.5);
      font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
      padding: 6px 14px;
      border-radius: 50px;
    }
    .globe-dot {
      width: 5px; height: 5px; border-radius: 50%;
      background: var(--green);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.5); }
    }

    /* ─── FORM SIDE ─── */
    .form-side {
      display: flex; flex-direction: column;
    }

    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(0,197,135,0.10);
      border: 1px solid rgba(0,197,135,0.25);
      color: var(--green);
      font-size: 0.72rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase;
      padding: 6px 14px;
      border-radius: 50px;
      margin-bottom: 1.5rem;
      width: fit-content;
      animation: fadeUp .6s ease both;
    }
    .hero-badge-dot {
      width: 5px; height: 5px; border-radius: 50%;
      background: var(--green);
      animation: pulse 2s infinite;
    }

    .form-side h1 {
      font-size: clamp(2rem, 4vw, 3.2rem);
      font-weight: 900;
      line-height: 1.1;
      letter-spacing: -0.03em;
      color: #ffffff;
      margin-bottom: 0.75rem;
      animation: fadeUp .6s .1s ease both;
    }
    .form-side h1 .hl {
      background: linear-gradient(135deg, var(--green) 0%, #00e8a0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .form-sub {
      font-size: 0.975rem;
      color: rgba(255,255,255,0.45);
      margin-bottom: 2.5rem;
      line-height: 1.7;
      animation: fadeUp .6s .2s ease both;
    }

    /* ─── CONTACT FORM ─── */
    .contact-form {
      display: flex; flex-direction: column; gap: 1.25rem;
      animation: fadeUp .6s .3s ease both;
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }

    .form-group {
      display: flex; flex-direction: column; gap: 6px;
    }

    .form-label {
      font-size: 0.78rem; font-weight: 600;
      color: rgba(255,255,255,0.60);
      letter-spacing: 0.04em;
      text-transform: uppercase;
    }

    .form-input,
    .form-select,
    .form-textarea {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.10);
      border-radius: var(--radius-sm);
      color: #fff;
      font-family: 'Inter', sans-serif;
      font-size: 0.9rem;
      padding: 0.75rem 1rem;
      transition: border-color .2s, background .2s, box-shadow .2s;
      outline: none;
      width: 100%;
    }
    .form-input::placeholder,
    .form-textarea::placeholder { color: rgba(255,255,255,0.22); }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: rgba(0,197,135,0.50);
      background: rgba(0,197,135,0.05);
      box-shadow: 0 0 0 3px rgba(0,197,135,0.10);
    }

    .form-select {
      appearance: none;
      cursor: pointer;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 14px center;
      padding-right: 2.5rem;
    }
    .form-select option {
      background: #1a1635;
      color: #fff;
    }

    .form-textarea {
      resize: vertical;
      min-height: 130px;
      line-height: 1.6;
    }

    /* ─── SUBJECT RADIOS ─── */
    .subject-group {
      display: flex; flex-direction: column; gap: 6px;
    }
    .subject-options {
      display: flex; flex-wrap: wrap; gap: 0.6rem;
    }
    .subject-option {
      position: relative;
    }
    .subject-option input[type="radio"] {
      position: absolute; opacity: 0; width: 0; height: 0;
    }
    .subject-option label {
      display: inline-flex; align-items: center; gap: 7px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.10);
      border-radius: 50px;
      padding: 0.45rem 1rem;
      font-size: 0.82rem; font-weight: 500;
      color: rgba(255,255,255,0.50);
      cursor: pointer;
      transition: all .2s;
      user-select: none;
    }
    .subject-option label::before {
      content: '';
      width: 7px; height: 7px;
      border-radius: 50%;
      border: 2px solid rgba(255,255,255,0.25);
      flex-shrink: 0;
      transition: all .2s;
    }
    .subject-option input[type="radio"]:checked + label {
      background: rgba(0,197,135,0.12);
      border-color: rgba(0,197,135,0.45);
      color: var(--green);
    }
    .subject-option input[type="radio"]:checked + label::before {
      background: var(--green);
      border-color: var(--green);
      box-shadow: 0 0 0 3px rgba(0,197,135,0.20);
    }
    .subject-option label:hover {
      border-color: rgba(0,197,135,0.30);
      color: rgba(255,255,255,0.75);
    }

    /* ─── CHECKBOX ─── */
    .form-check {
      display: flex; align-items: flex-start; gap: 10px;
      cursor: pointer;
    }
    .form-check input[type="checkbox"] {
      appearance: none;
      width: 18px; height: 18px;
      min-width: 18px;
      border: 1.5px solid rgba(255,255,255,0.20);
      border-radius: 5px;
      background: rgba(255,255,255,0.04);
      cursor: pointer;
      position: relative;
      margin-top: 2px;
      transition: all .2s;
    }
    .form-check input[type="checkbox"]:checked {
      background: var(--green);
      border-color: var(--green);
    }
    .form-check input[type="checkbox"]:checked::after {
      content: '';
      position: absolute;
      left: 4px; top: 1px;
      width: 6px; height: 10px;
      border: 2px solid #fff;
      border-top: none; border-left: none;
      transform: rotate(45deg);
    }
    .form-check-text {
      font-size: 0.82rem;
      color: rgba(255,255,255,0.40);
      line-height: 1.5;
    }
    .form-check-text a {
      color: var(--green);
      text-decoration: underline;
      text-decoration-color: rgba(0,197,135,0.35);
      transition: color .2s;
    }
    .form-check-text a:hover { color: #00e8a0; }

    /* ─── SUBMIT BTN ─── */
    .btn-submit {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      background: var(--green);
      color: #fff;
      font-family: 'Inter', sans-serif;
      font-size: 1rem; font-weight: 700;
      padding: 0.9rem 2.2rem;
      border-radius: 50px;
      border: none;
      cursor: pointer;
      transition: background .2s, transform .2s, box-shadow .2s;
      box-shadow: 0 6px 24px rgba(0,197,135,0.38);
      width: 100%;
      letter-spacing: 0.01em;
    }
    .btn-submit:hover {
      background: var(--green-dark);
      transform: translateY(-2px);
      box-shadow: 0 10px 30px rgba(0,197,135,0.45);
    }
    .btn-submit:active { transform: translateY(0); }

    .btn-submit svg {
      width: 18px; height: 18px;
      transition: transform .2s;
    }
    .btn-submit:hover svg { transform: translateX(3px); }

    /* ─── SUCCESS MSG ─── */
    .form-success {
      display: none;
      flex-direction: column; align-items: center; justify-content: center;
      text-align: center;
      padding: 3rem 2rem;
      gap: 1rem;
    }
    .form-success.visible { display: flex; }
    .success-icon {
      width: 64px; height: 64px;
      background: rgba(0,197,135,0.12);
      border: 1px solid rgba(0,197,135,0.30);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
    }
    .success-icon svg { width: 28px; height: 28px; color: var(--green); }
    .success-title {
      font-size: 1.5rem; font-weight: 800; color: #fff;
      letter-spacing: -0.02em;
    }
    .success-msg {
      font-size: 0.9rem; color: rgba(255,255,255,0.45);
      max-width: 320px; line-height: 1.7;
    }

    /* ─── FOOTER ─── */
    footer {
      background: #0a0817;
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 64px 0 32px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 3rem;
      padding-bottom: 3rem;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .footer-logo { margin-bottom: 1.25rem; }
    .footer-logo img { height: 48px; width: auto; }
    .footer-tagline {
      font-size: 0.875rem; color: rgba(255,255,255,0.40);
      line-height: 1.7; max-width: 260px; margin-bottom: 1.75rem;
    }
    .footer-socials { display: flex; gap: 0.75rem; }
    .footer-social {
      width: 40px; height: 40px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      transition: background .2s, border-color .2s, transform .2s;
      color: rgba(255,255,255,0.55);
    }
    .footer-social:hover {
      background: rgba(0,197,135,0.12);
      border-color: rgba(0,197,135,0.30);
      color: var(--green);
      transform: translateY(-2px);
    }
    .footer-social svg { width: 18px; height: 18px; fill: currentColor; }

    .footer-col-title {
      font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em;
      color: rgba(255,255,255,0.30); margin-bottom: 1.25rem;
    }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
    .footer-links a {
      font-size: 0.875rem; color: rgba(255,255,255,0.50);
      transition: color .2s;
    }
    .footer-links a:hover { color: var(--green); }

    .footer-bottom {
      padding-top: 2rem;
      display: flex; align-items: center; justify-content: space-between;
      flex-wrap: wrap; gap: 1rem;
    }
    .footer-copy { font-size: 0.8rem; color: rgba(255,255,255,0.28); }
    .footer-badge {
      display: inline-flex; align-items: center; gap: 6px;
      font-size: 0.75rem; color: rgba(255,255,255,0.30);
    }
    .footer-badge-dot {
      width: 6px; height: 6px; border-radius: 50%;
      background: var(--green); opacity: 0.7;
    }

    /* ─── ANIMATIONS ─── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* ─── RESPONSIVE ─── */
    @media (max-width: 900px) {
      .hero { padding: 90px 0 60px; min-height: auto; }
      .hero-inner {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .globe-side {
        order: -1;
      }
      #globe-canvas { max-width: 300px; }
      .form-row { grid-template-columns: 1fr; }
      .nav-links, .nav-cta { display: none; }
      .nav-toggle { display: block; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
    }

    @media (max-width: 600px) {
      .form-side h1 { font-size: 2rem; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
      .subject-options { flex-direction: column; }
      .subject-option label { border-radius: 10px; }
    }

    /* ── User menu ── */
    .user-menu-wrap { position: relative; display: flex; align-items: center; }
    .user-btn {
      border: none; background: transparent; cursor: pointer;
      width: 38px; height: 38px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      color: rgba(255,255,255,0.85); padding: 0; flex-shrink: 0; transition: background .2s;
    }
    .user-btn:hover { background: rgba(255,255,255,0.12); }
    .user-dropdown {
      position: absolute; top: calc(100% + 10px); right: 0;
      background: #fff; border: 1px solid rgba(83,74,183,0.12);
      border-radius: 14px; box-shadow: 0 12px 32px rgba(25,21,68,0.13);
      min-width: 170px; padding: .35rem; z-index: 9999; display: none;
    }
    .user-dropdown.open { display: block; }
    .user-dropdown a, .user-dropdown button {
      display: flex; align-items: center; gap: .55rem;
      width: 100%; padding: .6rem .85rem; border-radius: 9px;
      font-size: .875rem; font-weight: 600; text-decoration: none;
      border: none; background: transparent; cursor: pointer;
      color: #1a1a2e; font-family: inherit; text-align: left;
      transition: background .2s, color .2s;
    }
    .user-dropdown a:hover, .user-dropdown button:hover { background: rgba(0,197,135,0.09); color: #00C587; }
    .user-dropdown .ud-logout { color: #d54848; }
    .user-dropdown .ud-logout:hover { background: rgba(213,72,72,0.08); color: #d54848; }
    .user-dropdown .ud-divider { height: 1px; background: rgba(83,74,183,0.1); margin: .25rem .5rem; }