/* ========================================
     Colors and shared values
     ======================================== */

  :root {
    --navy: #0b243f;
    --navy-2: #12385c;
    --ink: #17324d;
    --muted: #5f7183;
    --paper: #f6f9fb;
    --white: #fff;
    --aqua: #39b9b5;
    --aqua-dark: #147c7a;
    --orange: #f4a340;
    --line: #dce6ec;
    --shadow: 0 18px 50px rgba(11, 36, 63, 0.12);
  }

  /* ========================================
     Base styles and accessibility
     ======================================== */

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: Manrope, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.65;
  }

  a {
    color: inherit;
  }

  a:focus-visible {
    outline: 3px solid var(--orange);
    outline-offset: 4px;
  }

  .skip {
    position: absolute;
    left: -999px;
    top: 10px;
    z-index: 10;
    background: white;
    padding: 0.7rem 1rem;
    border-radius: 8px;
  }

  .skip:focus {
    left: 10px;
  }

  /* ========================================
     Header and navigation
     ======================================== */

  .topbar {
    background: var(--navy);
    color: white;
  }

  .nav {
    max-width: 1180px;
    margin: auto;
    min-height: 76px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0.01em;
  }

  .brand img {
    max-width: 62px;
    max-height: 48px;
    display: block;
  }

  .brand small {
    display: block;
    font-size: 0.68rem;
    font-weight: 600;
    color: #bcd0df;
    letter-spacing: 0.13em;
    text-transform: uppercase;
  }

  .mark {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.65);
    border-radius: 50%;
    color: var(--orange);
    font-family: Newsreader, serif;
    font-size: 25px;
  }

  .navlinks {
    display: flex;
    align-items: center;
    gap: 25px;
  }

  .navlinks a {
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 700;
    color: #d7e4ed;
  }

  .navlinks a:hover,
  .navlinks a:focus {
    color: white;
  }

  .nav-cta {
    border: 1px solid rgba(255, 255, 255, 0.38);
    border-radius: 999px;
    padding: 0.55rem 1rem;
  }

  /* ========================================
     Hero
     ======================================== */

  .hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(
      120deg,
      var(--navy) 0%,
      var(--navy-2) 68%,
      #155568 100%
    );
    color: white;
  }

  .hero::after {
    content: "";
    position: absolute;
    width: 430px;
    height: 430px;
    border: 74px solid rgba(57, 185, 181, 0.12);
    border-radius: 50%;
    right: -110px;
    top: -180px;
  }

  .hero-inner {
    position: relative;
    z-index: 1;
    max-width: 1180px;
    margin: auto;
    padding: 82px 24px 90px;
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 68px;
    align-items: center;
  }

  .eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 16px;
    color: #84dad7;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.18em;
  }

  .eyebrow::before {
    content: "";
    width: 34px;
    height: 3px;
    background: var(--orange);
  }

  h1 {
    margin: 0;
    max-width: 760px;
    font-family: Newsreader, Georgia, serif;
    font-size: clamp(3rem, 7vw, 5.4rem);
    line-height: 0.95;
    letter-spacing: -0.04em;
    font-weight: 600;
  }

  h1 span {
    color: var(--orange);
  }

  .lead {
    max-width: 690px;
    margin: 27px 0 0;
    color: #d7e4ed;
    font-size: 1.12rem;
    line-height: 1.75;
  }

  .hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 30px;
  }

  /* ========================================
     Buttons
     ======================================== */

  .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 6px;
    padding: 0.88rem 1.2rem;
    text-decoration: none;
    font-weight: 800;
    font-size: 0.9rem;
  }

  .button-primary {
    background: var(--orange);
    color: var(--navy);
  }

  .button-secondary {
    border: 1px solid rgba(255, 255, 255, 0.36);
    color: white;
  }

  .button:hover,
  .button:focus {
    transform: translateY(-2px);
  }

  /* ========================================
     Learning path panel
     ======================================== */

  .blueprint {
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 18px;
    padding: 26px;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
  }

  .blueprint-title {
    margin: 0 0 18px;
    font-weight: 800;
    font-size: 0.77rem;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: #9bdedc;
  }

  .step {
    display: flex;
    gap: 14px;
    align-items: center;
    padding: 13px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .step:first-of-type {
    border-top: 0;
  }

  .step-no {
    flex: 0 0 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--aqua);
    color: var(--navy);
    font-weight: 800;
  }

  .step b {
    font-size: 0.92rem;
  }

  .step small {
    display: block;
    color: #bcd0df;
  }

  /* ========================================
     Section headings
     ======================================== */

  .section {
    max-width: 1180px;
    margin: auto;
    padding: 78px 24px;
  }

  .section-head {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    align-items: end;
    margin-bottom: 34px;
  }

  .section-kicker {
    color: var(--aqua-dark);
    text-transform: uppercase;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.16em;
  }

  .section h2 {
    font-family: Newsreader, Georgia, serif;
    font-size: clamp(2.15rem, 4vw, 3.25rem);
    line-height: 1.04;
    margin: 7px 0 0;
    color: var(--navy);
  }

  .section-intro {
    max-width: 480px;
    margin: 0;
    color: var(--muted);
  }

  /* ========================================
     Tutorial cards
     ======================================== */

  .tutorials {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .card {
    display: flex;
    flex-direction: column;
    min-height: 300px;
    padding: 25px;
    background: white;
    border: 1px solid var(--line);
    border-radius: 14px;
    text-decoration: none;
    box-shadow: 0 8px 26px rgba(11, 36, 63, 0.06);
    transition: 0.2s ease;
  }

  .card:hover,
  .card:focus-visible {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: #99d8d5;
  }

  .card:focus-visible {
    outline: 3px solid var(--orange);
    outline-offset: 3px;
  }

  .card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .number {
    font-family: Newsreader, serif;
    font-size: 2rem;
    color: var(--aqua-dark);
  }

  .duration {
    font-size: 0.76rem;
    font-weight: 800;
    color: var(--muted);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.25rem 0.55rem;
  }

  .card h3 {
    font-size: 1.18rem;
    line-height: 1.28;
    color: var(--navy);
    margin: 28px 0 10px;
  }

  .card p {
    font-size: 0.9rem;
    color: var(--muted);
    margin: 0 0 22px;
  }

  .watch {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-top: auto;
    color: var(--aqua-dark);
    font-size: 0.84rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .play {
    display: grid;
    place-items: center;
    width: 31px;
    height: 31px;
    border-radius: 50%;
    background: var(--aqua);
    color: white;
  }

  /* ========================================
     Tutorial group cards
     ======================================== */

  .group-card {
    min-height: 390px;
    padding: 32px;
  }

  .group-card h3 {
    font-family: Newsreader, Georgia, serif;
    font-size: 2rem;
    margin-top: 25px;
  }

  .group-icon {
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    background: #e8f6f5;
    border-radius: 13px;
    color: var(--aqua-dark);
  }

  .group-icon svg {
    width: 34px;
    height: 34px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .topics {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin: 0 0 28px;
    padding: 0;
    list-style: none;
  }

  .topics li {
    font-size: 0.73rem;
    font-weight: 700;
    background: var(--paper);
    color: var(--muted);
    border-radius: 5px;
    padding: 4px 9px;
  }

  /* ========================================
     Teal introductory card
     ======================================== */

  .intro-card {
    background: linear-gradient(
      145deg,
      var(--aqua-dark),
      #1f9793
    );
    border-color: transparent;
    color: white;
  }

  .intro-card .number,
  .intro-card h3,
  .intro-card .watch {
    color: white;
  }

  .intro-card p {
    color: #dff8f7;
  }

  .intro-card .duration {
    color: white;
    border-color: rgba(255, 255, 255, 0.35);
  }

  .intro-card .play {
    background: var(--orange);
    color: var(--navy);
  }

  .intro-card .group-icon {
    background: rgba(255, 255, 255, 0.14);
    color: white;
  }

  .intro-card .topics li {
    background: rgba(255, 255, 255, 0.13);
    color: white;
  }

  /* ========================================
     Basic authoring skills card — warm cream
     Use: class="card group-card basic-card"
     ======================================== */

  .basic-card {
    background: #fff4e5;
    border-color: #edcfaa;
  }

  .basic-card .group-icon {
    background: #fce2bf;
    color: #8a541c;
  }

  .basic-card .duration {
    color: #8a541c;
    border-color: #edcfaa;
  }

  .basic-card .topics li {
    background: #fce8cd;
    color: #754a20;
  }

  .basic-card .watch {
    color: #8a541c;
  }

  .basic-card:hover,
  .basic-card:focus-visible {
    border-color: #c99a61;
  }

  /* ========================================
     Getting started note
     ======================================== */

  .start-note {
    margin: 28px 0 0;
    padding: 20px 24px;
    background: white;
    border-left: 4px solid var(--orange);
    border-radius: 0 8px 8px 0;
    color: var(--muted);
    font-size: 0.92rem;
  }

  .start-note strong {
    color: var(--navy);
  }

  /* ========================================
     Learning outcomes
     ======================================== */

  .outcomes {
    background: white;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .outcomes-inner {
    max-width: 1180px;
    margin: auto;
    padding: 75px 24px;
    display: grid;
    grid-template-columns: 0.72fr 1.28fr;
    gap: 72px;
  }

  .outcomes p {
    color: var(--muted);
  }

  .outcome-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .outcome {
    padding: 23px;
    border-left: 4px solid var(--orange);
    background: var(--paper);
  }

  .outcome b {
    display: block;
    color: var(--navy);
    margin-bottom: 5px;
  }

  .outcome span {
    color: var(--muted);
    font-size: 0.9rem;
  }

  /* ========================================
     Call to action
     ======================================== */

  .cta {
    max-width: 1180px;
    margin: 72px auto;
    padding: 0 24px;
  }

  .cta-box {
    padding: 50px;
    border-radius: 18px;
    background: var(--navy);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 34px;
  }

  .cta h2 {
    font-family: Newsreader, serif;
    font-size: 2.5rem;
    line-height: 1.05;
    margin: 0;
  }

  .cta p {
    color: #c7d8e4;
    margin: 12px 0 0;
    max-width: 650px;
  }

  /* ========================================
     Footer
     ======================================== */

  footer {
    background: #071a2d;
    color: #afc2d1;
  }

  .footer-inner {
    max-width: 1180px;
    margin: auto;
    padding: 42px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    font-size: 0.82rem;
  }

  .footer-inner a {
    color: white;
  }

  /* ========================================
     Tablet layout
     ======================================== */

  @media (max-width: 900px) {
    .hero-inner {
      grid-template-columns: 1fr;
    }

    .blueprint {
      display: none;
    }

    .outcomes-inner {
      grid-template-columns: 1fr;
      gap: 25px;
    }

    .navlinks a:not(.nav-cta) {
      display: none;
    }
  }

  /* ========================================
     Mobile layout
     ======================================== */

  @media (max-width: 620px) {
    .hero-inner {
      padding: 58px 20px 66px;
    }

    .section {
      padding: 58px 20px;
    }

    .section-head,
    .cta-box,
    .footer-inner {
      align-items: flex-start;
      flex-direction: column;
    }

    .tutorials,
    .outcome-list {
      grid-template-columns: 1fr;
    }

    .card {
      min-height: 270px;
    }

    .group-card {
      padding: 26px;
      min-height: 360px;
    }

    .cta {
      padding: 0 20px;
    }

    .cta-box {
      padding: 34px 26px;
    }

    .nav {
      padding: 0 20px;
      gap: 12px;
    }

    .navlinks {
      gap: 12px;
    }

    .nav-cta {
      white-space: nowrap;
    }

    .brand-name {
      font-size: 0.88rem;
    }
  }

  /* ========================================
     Reduced motion preference
     ======================================== */

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    .button,
    .card {
      transition: none;
    }

    .card:hover,
    .card:focus-visible,
    .button:hover,
    .button:focus {
      transform: none;
    }
  }