:root {
      --navy: #020936;
      --navy-2: #061b70;
      --blue: #073cff;
      --blue-2: #006dff;
      --cyan: #19c7ff;
      --yellow: #ffe000;
      --red: #e51b23;
      --red-dark: #b80f17;
      --green: #10a52d;
      --green-dark: #078522;
      --white: #fff;
      --text: #17213d;
      --muted: #4f5b70;
      --line: #d8e2f7;
      --radius: 16px;
      --shadow: 0 12px 28px rgba(0, 0, 50, .25);
    }

    * { box-sizing: border-box; }

    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      background: var(--navy);
      color: var(--text);
      font-family: Arial, Helvetica, sans-serif;
      line-height: 1.4;
    }

    a { color: inherit; }

    .container {
      width: min(1180px, calc(100% - 34px));
      margin: 0 auto;
    }

    /* HEADER */
    .site-header {
      height: 76px;
      background: #01052c;
      border-bottom: 2px solid var(--yellow);
      color: var(--white);
    }

    .header-inner {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand {
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      line-height: 1;
    }

    .brand strong {
      color: var(--white);
      font-size: clamp(1.35rem, 3vw, 2rem);
      font-style: italic;
      font-weight: 900;
      letter-spacing: -.035em;
      white-space: nowrap;
    }
    .brand .brand-dotnet {
      color: #ff7a00;
    }

    .brand em {
      color: var(--white);
      font-style: italic;
      font-weight: 900;
    }


    .header-link {
      color: var(--white);
      text-decoration: none;
      font-weight: 800;
      font-size: .88rem;
    }

    .header-link::before {
      content: "⌂";
      color: var(--yellow);
      font-size: 1.3rem;
      margin-right: 8px;
    }

    .header-link:hover { color: var(--yellow); }

    /* HERO */
    .hero {
      position: relative;
      overflow: hidden;
      padding: 0 0 34px;
      text-align: center;
      background:
        radial-gradient(circle at 5% 20%, rgba(25,199,255,.28), transparent 24%),
        radial-gradient(circle at 96% 35%, rgba(0,109,255,.45), transparent 28%),
        linear-gradient(135deg, #07134e 0%, #062a98 48%, #002bd0 100%);
      color: var(--white);
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      opacity: .45;
      background:
        repeating-linear-gradient(155deg,
          transparent 0 95px,
          rgba(22,184,255,.8) 97px 99px,
          transparent 101px 150px);
      transform: translateX(-120px);
    }

    .hero::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 3px;
      background: var(--yellow);
    }

    .hero .container {
      position: relative;
      z-index: 2;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: -1px;
      padding: 9px 28px;
      background: var(--yellow);
      color: #050a31;
      border-radius: 0 0 9px 9px;
      font-size: clamp(.9rem, 2vw, 1.05rem);
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: .01em;
      box-shadow: 0 8px 18px rgba(0,0,0,.2);
    }

    .hero h1 {
      margin: 18px auto 4px;
      max-width: 900px;
      color: var(--white);
      font-size: clamp(2.1rem, 5.2vw, 3.55rem);
      line-height: 1;
      letter-spacing: -.035em;
      font-weight: 900;
    }

    .hero h1::first-line { color: var(--white); }

    .hero p {
      max-width: 780px;
      margin: 0 auto;
      color: var(--white);
      font-size: clamp(.95rem, 2vw, 1.18rem);
    }

    .offer-period {
      display: inline-block;
      margin-top: 16px;
      padding: 8px 24px;
      border: 1px solid rgba(0,194,255,.85);
      border-radius: 999px;
      background: rgba(0,16,84,.72);
      color: var(--white);
      font-size: .92rem;
      font-weight: 900;
      box-shadow: 0 0 18px rgba(0,170,255,.18);
    }

    /* COURSE AREA */
    .courses {
      padding: 6px 0 24px;
      background:
        radial-gradient(circle at 2% 30%, rgba(0,181,255,.18), transparent 18%),
        radial-gradient(circle at 100% 50%, rgba(0,71,255,.20), transparent 24%),
        #06165f;
    }

    .course-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .course-card {
      position: relative;
      min-width: 0;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      background: var(--white);
      border: 2px solid #b9c9ff;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .course-image-wrap {
      position: relative;
      width: 100%;
      aspect-ratio: 16 / 7.5;
      background: #071550;
      overflow: hidden;
    }

    .course-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .discount {
      position: absolute;
      top: 0;
      left: 0;
      z-index: 3;
      padding: 8px 12px 10px;
      min-width: 72px;
      background: linear-gradient(150deg, #ff2b2b, #c70d15);
      color: var(--white);
      border-radius: 0 0 11px 0;
      text-align: center;
      font-size: .85rem;
      font-weight: 900;
      line-height: 1.05;
      box-shadow: 0 5px 13px rgba(120,0,0,.35);
    }

    .course-body {
      min-width: 0;
      padding: 17px 20px 15px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .course-title {
      margin: 0;
      color: var(--navy);
      font-size: clamp(1.18rem, 2vw, 1.5rem);
      line-height: 1.08;
      font-weight: 900;
    }

    .course-subtitle {
      margin: 7px 0 9px;
      color: #39445b;
      font-size: .82rem;
      line-height: 1.35;
    }

    .course-highlight {
      display: none;
    }

    .stats {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 7px;
      margin: 2px 0 11px;
      color: #19233d;
      font-size: .73rem;
      font-weight: 800;
    }

    .stat {
      padding: 0;
      background: transparent;
      color: #19233d;
      font-size: .73rem;
    }

    .stat:not(:last-child)::after {
      content: " | ";
      color: #8d96a9;
      margin-left: 7px;
    }

    .price-area {
      margin-top: auto;
      padding-top: 7px;
      border-top: 1px solid #e1e6f0;
    }

    .old-price {
      display: inline;
      color: #565656;
      font-size: .82rem;
      font-weight: 700;
    }

    .old-price s { text-decoration-thickness: 2px; }

    .price {
      display: inline;
      margin-left: 7px;
      color: var(--red);
      font-size: clamp(1.65rem, 3vw, 2.05rem);
      line-height: 1;
      font-weight: 900;
    }

    .installments {
      display: table;
      margin: 7px auto 8px;
      padding: 4px 11px;
      border-radius: 999px;
      background: var(--yellow);
      color: #18203a;
      font-size: .72rem;
      font-weight: 900;
    }

    .benefits {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 5px;
      margin: 5px 0 10px;
      color: var(--success);
      font-size: .68rem;
      font-weight: 800;
    }

    .benefits span {
      padding: 3px 7px;
      border: 1px solid #a9e78c;
      border-radius: 999px;
      white-space: nowrap;
    }

    .benefits span::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 14px;
      height: 14px;
      margin-right: 3px;
      border-radius: 50%;
      background: var(--green);
      color: var(--white);
      font-size: .62rem;
    }

    .cta {
      display: block;
      width: 100%;
      padding: 11px 9px;
      border-radius: 8px;
      background: linear-gradient(180deg, #16b936, #078d25);
      color: var(--white);
      text-align: center;
      text-decoration: none;
      font-size: .83rem;
      font-weight: 900;
      box-shadow: 0 6px 13px rgba(0,126,31,.22);
      transition: transform .15s ease, filter .15s ease;
    }

    .cta:hover {
      filter: brightness(1.08);
      transform: translateY(-1px);
    }

    .details-link {
      display: block;
      margin-top: 7px;
      color: #075cff;
      text-align: center;
      text-decoration: none;
      font-size: .69rem;
      font-weight: 900;
    }

    .details-link:hover { color: var(--red); }

    /* BENEFITS */
    .why {
      padding: 17px 0 20px;
      background: #06114d;
      border-top: 1px solid rgba(255,255,255,.18);
      border-bottom: 1px solid rgba(255,255,255,.18);
      color: var(--white);
    }

    .section-heading {
      display: flex;
      align-items: center;
      gap: 18px;
      margin: 0 auto 10px;
      max-width: 1120px;
    }

    .section-heading::before,
    .section-heading::after {
      content: "";
      height: 1px;
      flex: 1;
      background: var(--yellow);
    }

    .section-heading h2 {
      margin: 0;
      color: var(--yellow);
      font-size: 1.35rem;
      line-height: 1;
      white-space: nowrap;
      text-transform: uppercase;
    }

    .section-heading p {
      display: none;
    }

    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }

    .benefit {
      min-height: 126px;
      padding: 8px 18px 5px;
      border-right: 1px solid rgba(0,177,255,.5);
      background: transparent;
      text-align: left;
    }

    .benefit:last-child { border-right: 0; }

    .benefit-icon {
      width: 50px;
      height: 50px;
      display: inline-grid;
      place-items: center;
      vertical-align: middle;
      border: 2px solid var(--cyan);
      border-radius: 50%;
      background: #07114d;
      color: var(--yellow);
      font-size: 1.25rem;
      box-shadow: 0 0 13px rgba(0,180,255,.28);
      margin-right: 8px;
    }

    .benefit h3 {
      display: inline-block;
      vertical-align: middle;
      margin: 0;
      color: var(--yellow);
      font-size: .88rem;
      text-transform: uppercase;
    }

    .benefit p {
      display: block;
      width: 100%;
      margin: 8px 0 0;
      color: var(--white);
      font-size: .74rem;
      line-height: 1.32;
      text-align: justify;
      text-justify: inter-word;
    }

    /* FINAL CTA */
    .final-cta {
      padding: 18px 0;
      background: linear-gradient(90deg, #ffe000, #ffd000);
      text-align: center;
    }

    .final-cta h2 {
      margin: 0 0 3px;
      color: var(--navy);
      font-size: 1.35rem;
      line-height: 1.05;
      text-transform: uppercase;
    }

    .final-cta p {
      margin: 0 auto 12px;
      color: #18213d;
      font-size: .95rem;
      line-height: 1.35;
      font-weight: 800;
    }

    .secondary-cta {
      display: inline-block;
      padding: 13px 24px;
      border-radius: 8px;
      background: var(--red);
      color: var(--white);
      text-decoration: none;
      font-size: 1rem;
      font-weight: 900;
      box-shadow: 0 6px 13px rgba(120,0,0,.25);
    }

    .secondary-cta:hover { background: var(--red-dark); }

    /* FOOTER */
    footer {
      padding: 16px 0;
      background: #01052c;
      color: rgba(255,255,255,.7);
      text-align: center;
      font-size: .7rem;
    }

    footer a {
      color: var(--white);
      text-decoration: none;
      font-weight: 800;
    }

    /* RESPONSIVE */
    @media (max-width: 900px) {
      .course-grid { grid-template-columns: 1fr; }
      .course-card { max-width: 760px; margin: 0 auto; width: 100%; }
      .benefit-grid { grid-template-columns: repeat(2, 1fr); }
      .benefit:nth-child(2) { border-right: 0; }
      .benefit:nth-child(-n+2) { border-bottom: 1px solid rgba(0,177,255,.5); }
    }

    @media (max-width: 560px) {
      .container { width: min(100% - 20px, 1180px); }
      .site-header { height: 64px; }
      .brand strong { font-size: 1.15rem; }
      .header-link { font-size: .76rem; }
      .header-link::before { font-size: 1rem; }
      .hero h1 { font-size: 2.05rem; }
      .course-image-wrap { aspect-ratio: 16 / 9; }
      .course-body { padding: 18px; }
      .benefit-grid { grid-template-columns: 1fr; }
      .benefit { border-right: 0; border-bottom: 1px solid rgba(0,177,255,.5); }
      .benefit:last-child { border-bottom: 0; }
      .section-heading { gap: 10px; }
      .section-heading h2 { font-size: 1.05rem; }
    }

    .load-error {
      grid-column: 1 / -1;
      padding: 30px;
      background: #fff;
      border-radius: 16px;
      text-align: center;
      color: #07154f;
      font-weight: 800;
    }