/* ══════════════════════════════════════
   RESET & TOKENS
══════════════════════════════════════ */
    :root {
      --blue: #3d8bff;
      --blue-dark: #2c78f0;
      --blue-light: #eff6ff;
      --red: #e53935;
      --red-light: #fef2f2;
      --dark: #0f172a;
      --gray: #64748b;
      --border: #e5e7eb;
      --bg: #f8fafc;
      --white: #fff;
      --radius: 14px;
      --radius-sm: 9px;
      --shadow: 0 2px 16px rgba(0, 0, 0, .07);
      --shadow-lg: 0 8px 40px rgba(0, 0, 0, .12);
      --font: 'Plus Jakarta Sans', sans-serif;
    }

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

    html {
      scroll-behavior: smooth
    }

    body {
      font-family: var(--font);
      color: var(--dark);
      background: var(--white);
      line-height: 1.6;
      font-size: 15px
    }

    img {
      max-width: 100%;
      height: auto;
      display: block
    }

    a {
      text-decoration: none;
      color: inherit
    }

    ul {
      list-style: none
    }

    button {
      font-family: inherit;
      cursor: pointer
    }

    /* ══════════════════════════════════════
   NAVBAR
══════════════════════════════════════ */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, .95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      padding: 0 24px;
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 21px;
      font-weight: 900;
      letter-spacing: -.5px
    }

    .nav-logo .d {
      color: var(--blue)
    }

    .nav-logo .h {
      color: var(--red)
    }

    .nav-logo-sub {
      font-size: 11px;
      font-weight: 600;
      color: var(--gray);
      letter-spacing: .5px;
      line-height: 1
    }

    .nav-logo-img { height: 46px; width: auto; display: block; }
    .footer-logo-img {
      height: 54px; width: auto; display: block; margin-bottom: 12px;
      background: rgba(255,255,255,.08); border-radius: 10px; padding: 6px 10px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px
    }

    .nav-links a {
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      color: var(--gray);
      transition: all .15s;
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: var(--dark);
      background: var(--bg)
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 8px
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 700;
      border: none;
      transition: all .17s;
      white-space: nowrap
    }

    .btn-outline {
      background: none;
      border: 1.5px solid var(--border);
      color: var(--dark)
    }

    .btn-outline:hover {
      border-color: var(--blue);
      color: var(--blue)
    }

    .btn-primary {
      background: var(--blue);
      color: #fff
    }

    .btn-primary:hover {
      background: var(--blue-dark);
      transform: translateY(-1px)
    }

    .btn-red {
      background: var(--red);
      color: #fff
    }

    .btn-red:hover {
      background: #c62828;
      transform: translateY(-1px)
    }

    .btn-lg {
      padding: 13px 28px;
      font-size: 16px;
      border-radius: 12px
    }

    .btn-xl {
      padding: 16px 36px;
      font-size: 17px;
      border-radius: 14px
    }

    .nav-hamburger {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      color: var(--dark);
      padding: 4px
    }

    .mobile-menu {
      display: none;
      position: fixed;
      inset: 64px 0 0 0;
      z-index: 99;
      background: var(--white);
      border-top: 1px solid var(--border);
      flex-direction: column;
      padding: 24px;
      gap: 8px;
      overflow-y: auto;
    }

    .mobile-menu.open {
      display: flex
    }

    .mobile-menu a {
      padding: 14px 16px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 16px;
      color: var(--dark);
      border-bottom: 1px solid var(--border)
    }

    /* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
    .hero {
      min-height: calc(100vh - 64px);
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: 40px;
      padding: 80px 80px 80px 80px;
      background: linear-gradient(135deg, #f0f6ff 0%, #fff5f5 100%);
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -80px;
      right: -80px;
      width: 500px;
      height: 500px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(61, 139, 255, .12), transparent 70%);
      pointer-events: none;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--blue-light);
      border: 1px solid rgba(61, 139, 255, .3);
      color: var(--blue);
      font-size: 13px;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 20px;
      margin-bottom: 20px;
    }

    .hero h1 {
      font-size: clamp(36px, 4.5vw, 58px);
      font-weight: 900;
      line-height: 1.1;
      letter-spacing: -1.5px;
      margin-bottom: 20px;
    }

    .hero h1 .accent {
      background: linear-gradient(135deg, var(--blue), var(--red));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-sub {
      font-size: 17px;
      color: var(--gray);
      line-height: 1.7;
      max-width: 480px;
      margin-bottom: 32px
    }

    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-bottom: 40px
    }

    .hero-stats {
      display: flex;
      gap: 32px;
      flex-wrap: wrap
    }

    .hero-stat {
      display: flex;
      flex-direction: column
    }

    .hero-stat strong {
      font-size: 26px;
      font-weight: 900;
      color: var(--dark)
    }

    .hero-stat span {
      font-size: 13px;
      color: var(--gray);
      font-weight: 500
    }

    .hero-img {
      position: relative
    }

    .hero-img img {
      width: 100%;
      border-radius: 20px;
      box-shadow: var(--shadow-lg);
      object-fit: cover;
      aspect-ratio: 4/5;
    }

    .hero-float-card {
      position: absolute;
      bottom: 28px;
      left: -28px;
      background: var(--white);
      border-radius: 14px;
      padding: 14px 18px;
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .hero-float-card .icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--blue), #7c3aed);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      flex-shrink: 0;
    }

    .hero-float-card strong {
      display: block;
      font-weight: 800;
      font-size: 15px
    }

    .hero-float-card span {
      font-size: 12px;
      color: var(--gray)
    }

    /* ══════════════════════════════════════
   SECTION COMMON
══════════════════════════════════════ */
    section {
      padding: 80px 80px
    }

    .section-tag {
      display: inline-block;
      background: var(--blue-light);
      color: var(--blue);
      font-size: 12px;
      font-weight: 700;
      padding: 5px 13px;
      border-radius: 20px;
      letter-spacing: .5px;
      text-transform: uppercase;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: clamp(26px, 3vw, 38px);
      font-weight: 900;
      letter-spacing: -.5px;
      margin-bottom: 10px
    }

    .section-sub {
      font-size: 16px;
      color: var(--gray);
      max-width: 560px
    }

    .section-head {
      margin-bottom: 48px
    }

    /* ══════════════════════════════════════
   WHY US
══════════════════════════════════════ */
    .why-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px
    }

    .why-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px 22px;
      transition: box-shadow .2s, transform .2s;
    }

    .why-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px)
    }

    .why-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 16px;
    }

    .why-card h3 {
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 8px
    }

    .why-card p {
      font-size: 14px;
      color: var(--gray);
      line-height: 1.65
    }

    /* ══════════════════════════════════════
   COURSES
══════════════════════════════════════ */
    .courses-section {
      background: var(--bg)
    }

    .courses-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px
    }

    .course-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: box-shadow .2s, transform .2s;
      display: flex;
      flex-direction: column;
    }

    .course-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px)
    }

    .course-thumb {
      width: 100%;
      aspect-ratio: 16/9;
      background: linear-gradient(135deg, #dbeafe, #ede9fe);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 48px;
      position: relative;
      overflow: hidden;
    }

    .course-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      inset: 0
    }

    .course-level {
      position: absolute;
      top: 12px;
      left: 12px;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 10px;
    }

    .lv-red {
      background: #fce4e4;
      color: var(--red)
    }

    .lv-blue {
      background: var(--blue-light);
      color: var(--blue)
    }

    .lv-green {
      background: #f0fdf4;
      color: #16a34a
    }

    .lv-purple {
      background: #f5f3ff;
      color: #7c3aed
    }

    .course-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column
    }

    .course-body h3 {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 6px
    }

    .course-target {
      font-size: 13px;
      color: var(--blue);
      font-weight: 600;
      margin-bottom: 10px
    }

    .course-body p {
      font-size: 13px;
      color: var(--gray);
      line-height: 1.6;
      flex: 1
    }

    .course-meta {
      display: flex;
      gap: 14px;
      margin-top: 14px;
      padding-top: 14px;
      border-top: 1px solid var(--border)
    }

    .course-meta span {
      display: flex;
      align-items: center;
      gap: 5px;
      font-size: 12px;
      color: var(--gray)
    }

    .course-cta {
      margin-top: 16px
    }

    /* ══════════════════════════════════════
   TEACHER
══════════════════════════════════════ */
    .teacher-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .teacher-img {
      position: relative;
    }

    .teacher-img img {
      width: 100%;
      border-radius: 20px;
      object-fit: contain;
      aspect-ratio: auto;
      background: linear-gradient(135deg, #eff6ff, #f0fdf4);
      box-shadow: var(--shadow-lg);
    }

    .teacher-badge-wrap {
      position: absolute;
      bottom: -20px;
      right: -20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .t-badge {
      background: var(--white);
      border-radius: 12px;
      padding: 12px 16px;
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      font-weight: 700;
    }

    .t-badge .dot {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 17px;
      flex-shrink: 0;
    }

    .teacher-info .section-tag {
      margin-bottom: 14px
    }

    .teacher-info h2 {
      font-size: clamp(28px, 3vw, 40px);
      font-weight: 900;
      letter-spacing: -.5px;
      margin-bottom: 6px
    }

    .teacher-name-en {
      font-size: 18px;
      font-weight: 700;
      color: var(--blue);
      margin-bottom: 20px
    }

    .teacher-info p {
      font-size: 15px;
      color: var(--gray);
      line-height: 1.8;
      margin-bottom: 24px
    }

    .certs-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 28px
    }

    .cert-item {
      display: flex;
      align-items: center;
      gap: 10px;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 12px 14px;
    }

    .cert-icon {
      font-size: 20px;
      flex-shrink: 0
    }

    .cert-item div {
      font-size: 12px;
      color: var(--gray)
    }

    .cert-item strong {
      display: block;
      font-size: 13px;
      font-weight: 700;
      color: var(--dark)
    }

    /* ══════════════════════════════════════
   TESTIMONIALS
══════════════════════════════════════ */
    .testimonials-section {
      background: var(--bg)
    }

    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px
    }

    .testi-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
    }

    .testi-stars {
      color: #f59e0b;
      font-size: 14px;
      margin-bottom: 12px
    }

    .testi-text {
      font-size: 14px;
      color: var(--gray);
      line-height: 1.7;
      font-style: italic;
      margin-bottom: 16px
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 10px
    }

    .testi-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      overflow: hidden;
      background: linear-gradient(135deg, var(--blue), var(--red));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 16px;
      flex-shrink: 0;
    }

    .testi-avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover
    }

    .testi-author strong {
      font-size: 14px;
      font-weight: 700;
      display: block
    }

    .testi-author span {
      font-size: 12px;
      color: var(--gray)
    }

    /* ══════════════════════════════════════
   CONTACT FORM
══════════════════════════════════════ */
    .contact-section {
      background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
      color: var(--white);
    }

    .contact-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: start
    }

    .contact-left h2 {
      font-size: clamp(26px, 3vw, 38px);
      font-weight: 900;
      margin-bottom: 14px
    }

    .contact-left p {
      font-size: 16px;
      color: rgba(255, 255, 255, .7);
      line-height: 1.75;
      margin-bottom: 28px
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px
    }

    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 14px
    }

    .contact-info-item .ci-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(255, 255, 255, .1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      flex-shrink: 0;
    }

    .contact-info-item div {
      font-size: 14px;
      color: rgba(255, 255, 255, .6)
    }

    .contact-info-item strong {
      display: block;
      font-size: 15px;
      color: var(--white);
      font-weight: 700
    }

    .form-card {
      background: var(--white);
      border-radius: 20px;
      padding: 36px;
      box-shadow: var(--shadow-lg);
    }

    .form-card h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 22px
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px
    }

    .form-group {
      margin-bottom: 14px
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 6px
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 11px 14px;
      border: 1.5px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-family: inherit;
      outline: none;
      background: var(--bg);
      color: var(--dark);
      transition: border-color .15s;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--blue);
      background: #fff
    }

    .form-group textarea {
      resize: vertical;
      min-height: 90px
    }

    .form-submit {
      width: 100%;
      padding: 14px;
      font-size: 15px;
      font-weight: 800;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--blue), var(--red));
      color: #fff;
      border: none;
      cursor: pointer;
      transition: opacity .15s
    }

    .form-submit:hover {
      opacity: .9
    }

    .form-submit:disabled {
      opacity: .6;
      cursor: not-allowed
    }

    #form-msg {
      margin-top: 12px;
      font-size: 14px;
      font-weight: 600;
      text-align: center
    }

    #form-msg.success {
      color: #16a34a
    }

    #form-msg.error {
      color: var(--red)
    }

    /* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
    .footer {
      background: #0f172a;
      padding: 48px 80px 28px;
      border-top: 1px solid rgba(255, 255, 255, .06);
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px
    }

    .footer-brand .nav-logo {
      margin-bottom: 14px
    }

    .footer-brand p {
      font-size: 13px;
      color: rgba(255, 255, 255, .5);
      line-height: 1.75;
      max-width: 280px
    }

    .footer-col h4 {
      font-size: 13px;
      font-weight: 700;
      color: var(--white);
      text-transform: uppercase;
      letter-spacing: .7px;
      margin-bottom: 16px
    }

    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px
    }

    .footer-col ul li a {
      font-size: 13px;
      color: rgba(255, 255, 255, .5);
      transition: color .15s
    }

    .footer-col ul li a:hover {
      color: var(--white)
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .08);
      padding-top: 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px
    }

    .footer-bottom p {
      font-size: 12px;
      color: rgba(255, 255, 255, .35)
    }

    .footer-socials {
      display: flex;
      gap: 12px
    }

    .social-btn {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: rgba(255, 255, 255, .07);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: rgba(255, 255, 255, .5);
      transition: all .15s;
    }

    .social-btn:hover {
      background: var(--blue);
      color: #fff
    }

    /* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
    @media(max-width:1024px) {
      section {
        padding: 60px 40px
      }

      .hero {
        padding: 60px 40px;
        gap: 30px
      }

      .why-grid {
        grid-template-columns: repeat(2, 1fr)
      }

      .courses-grid {
        grid-template-columns: repeat(2, 1fr)
      }

      .footer-top {
        grid-template-columns: 1fr 1fr
      }

      .footer {
        padding: 40px 40px 24px
      }
    }

    @media(max-width:768px) {
      .navbar {
        padding: 0 18px
      }

      .nav-links,
      .nav-cta {
        display: none
      }

      .nav-hamburger {
        display: block
      }

      section {
        padding: 50px 20px
      }

      .hero {
        grid-template-columns: 1fr;
        padding: 40px 20px;
        min-height: auto;
        text-align: center
      }

      .hero-img {
        order: -1;
        max-width: 340px;
        margin: 0 auto
      }

      .hero-float-card {
        display: none
      }

      .hero-actions {
        justify-content: center
      }

      .hero-stats {
        justify-content: center;
        gap: 24px
      }

      .teacher-wrap {
        grid-template-columns: 1fr;
        gap: 36px
      }

      .teacher-img {
        max-width: 320px;
        margin: 0 auto
      }

      .teacher-badge-wrap {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        margin-top: 12px
      }

      .contact-wrap {
        grid-template-columns: 1fr;
        gap: 36px
      }

      .form-row {
        grid-template-columns: 1fr
      }

      .certs-grid {
        grid-template-columns: 1fr
      }

      .courses-grid {
        grid-template-columns: 1fr
      }

      .why-grid {
        grid-template-columns: 1fr 1fr
      }

      .testi-grid {
        grid-template-columns: 1fr
      }

      .footer-top {
        grid-template-columns: 1fr
      }

      .footer {
        padding: 40px 20px 20px
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center
      }
    }