/* =========================
       GLOBAL VARIABLES
    ========================== */

    :root{
      --cream:#fffaf1;
      --warm:#f7efe2;
      --terracotta:#e65324;
      --terracotta-dark:#c9441b;
      --teal:#083f4c;
      --ink:#12333c;
      --muted:#5c7178;
      --yellow:#f6c85f;
      --shadow:0 24px 60px rgba(8,63,76,.16);
    }

    /* =========================
       GLOBAL BASE
    ========================== */

    *{
      box-sizing:border-box;
    }

    html{
      scroll-behavior:smooth;
    }

    body{
      margin:0;
      background:var(--warm);
      color:var(--ink);
      font-family:Inter,system-ui,sans-serif;
    }

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

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

    .site{
      max-width:1280px;
      margin:24px auto;
      background:var(--cream);
      box-shadow:var(--shadow);
      overflow:hidden;
      border-radius:18px;
    }

    .container{
      width:min(1120px,calc(100% - 40px));
      margin:auto;
    }

    .serif{
      font-family:'Playfair Display',Georgia,serif;
    }

    /* =========================
       BUTTONS
    ========================== */

    .btn{
      display:inline-flex;
      justify-content:center;
      align-items:center;
      padding:15px 22px;
      border-radius:10px;
      background:var(--terracotta);
      color:white;
      font-weight:900;
      transition:.2s;
      text-align:center;
    }

    .btn:hover{
      background:var(--terracotta-dark);
      transform:translateY(-2px);
    }

    .btn-outline{
      background:white;
      color:var(--teal);
      border:2px solid var(--teal);
    }

    .btn-outline:hover{
      background:var(--teal);
      color:white;
    }

    /* =========================
       HEADER
    ========================== */

    header{
      background:rgba(255,250,241,.95);
      border-bottom:1px solid rgba(8,63,76,.08);
    }

    .nav{
      display:flex;
      justify-content:space-between;
      align-items:center;
      padding:22px 0;
    }

    .logo{
      line-height:.88;
      color:var(--teal);
      font-weight:900;
      font-size:31px;
    }

    .logo span{
      display:block;
      color:var(--terracotta);
      font-family:Inter,sans-serif;
      font-size:10px;
      font-weight:900;
      letter-spacing:.12em;
      text-transform:uppercase;
      margin-top:8px;
    }

    .back{
      font-weight:900;
      color:var(--teal);
    }

    /* =========================
       HERO / BOOK INTRO
    ========================== */

    .hero{
      background:linear-gradient(100deg,#fffaf1 0%,#fbefd7 50%,#cbeaf2 100%);
      padding:80px 0;
    }

    .hero-grid{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:70px;
      align-items:center;
    }

    .book-cover-card{
      max-width:360px;
      margin:auto;
      background:white;
      border-radius:14px;
      box-shadow:0 30px 70px rgba(8,63,76,.22);
      transform:rotate(-3deg);
      overflow:hidden;
      border:2px solid white;
    }

    .book-cover-card img{
      width:100%;
      height:auto;
      display:block;
    }

    .eyebrow{
      color:var(--terracotta);
      font-size:12px;
      font-weight:900;
      text-transform:uppercase;
      letter-spacing:.12em;
      margin-bottom:18px;
    }

    h1{
      font-size:64px;
      line-height:1;
      margin:0 0 24px;
      color:var(--teal);
      letter-spacing:-.04em;
    }

    .hero p{
      font-size:19px;
      line-height:1.7;
      color:#42636c;
      margin:0 0 28px;
      max-width:620px;
    }

    .hero-note{
      font-size:14px;
      font-weight:700;
      color:#48636b;
    }

    /* =========================
       FORMAT / PLATFORM CARDS
    ========================== */

    .formats{
      padding:80px 0;
    }

    .section-title{
      text-align:center;
      font-size:46px;
      line-height:1.05;
      color:var(--teal);
      margin:0 0 16px;
    }

    .section-text{
      text-align:center;
      max-width:720px;
      margin:0 auto 45px;
      color:#526d75;
      line-height:1.7;
      font-size:17px;
    }

    .cards{
      display:grid;
      grid-template-columns:repeat(auto-fit,minmax(245px,1fr));
      gap:26px;
      align-items:stretch;
    }

    .card{
      background:white;
      border-radius:22px;
      padding:32px;
      box-shadow:0 16px 40px rgba(8,63,76,.10);
      border:1px solid rgba(8,63,76,.08);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:340px;
    }

    .card h2{
      color:var(--teal);
      font-size:28px;
      margin:0 0 14px;
    }

    .card p{
      color:#526d75;
      line-height:1.65;
      margin:0 0 24px;
    }

    .tag{
      display:inline-block;
      color:var(--terracotta);
      font-weight:900;
      font-size:12px;
      text-transform:uppercase;
      letter-spacing:.1em;
      margin-bottom:12px;
    }

    .small-note{
      margin-top:40px;
      text-align:center;
      color:#61757b;
      line-height:1.7;
      font-size:14px;
    }

    /* =========================
       FOOTER
    ========================== */

    footer{
      background:#072f3a;
      color:rgba(255,255,255,.72);
      padding:40px 0;
      text-align:center;
      font-size:13px;
    }

    footer a{
      color:white;
      font-weight:800;
    }

    /* =========================
       RESPONSIVE
    ========================== */

    @media(max-width:900px){
      .site{
        margin:0;
        border-radius:0;
      }

      .hero-grid{
        grid-template-columns:1fr;
        gap:45px;
      }

      h1{
        font-size:44px;
      }

      .section-title{
        font-size:36px;
      }

      .logo{
        font-size:24px;
      }

      .book-cover-card{
        max-width:300px;
      }
    }

    @media(max-width:560px){
      .container{
        width:min(100% - 28px,1120px);
      }

      .hero{
        padding:58px 0;
      }

      h1{
        font-size:40px;
      }

      .hero p{
        font-size:16px;
      }

      .btn{
        width:100%;
      }
    }