:root {
      --blue-dark: #1a3a6b;
      --blue-mid: #1e5fad;
      --blue-light: #3b82f6;
      --orange: #f97316;
      --orange-dark: #ea6c0a;
      --white: #ffffff;
      --gray-light: #f0f4ff;
      --gray-text: #64748b;
      --border: #d1ddf7;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: 'Inter', sans-serif; background: var(--white); color: #1e293b; padding-bottom: 70px; }

    /* NAV */
    nav {
      background: var(--blue-dark);
      padding: 14px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    }
    nav .logo { color: var(--white); font-size: 1.2rem; font-weight: 800; letter-spacing: -0.5px; cursor: pointer; }
    nav .logo span { color: var(--orange); }
    nav .nav-links { display: flex; gap: 20px; list-style: none; align-items: center; }
    nav .nav-links a { color: #cce0ff; text-decoration: none; font-size: 0.88rem; font-weight: 500; transition: color 0.2s; }
    nav .nav-links a:hover { color: var(--orange); }
    nav .nav-links .book-btn {
      background: var(--orange); color: white !important;
      padding: 7px 14px; border-radius: 8px; font-weight: 700 !important;
    }
    nav .nav-links .book-btn:hover { background: var(--orange-dark); }
    .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
    .hamburger span { width: 22px; height: 2px; background: white; border-radius: 2px; }

    /* PAGE SYSTEM */
    .page { display: none; }
    .page.active { display: block; }

    /* HERO */
    .hero {
      background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 100%);
      padding: 60px 24px 50px;
      text-align: center;
      color: white;
    }
    .hero h1 { font-size: clamp(1.6rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.2; margin-bottom: 12px; }
    .hero h1 span { color: var(--orange); }
    .hero p { font-size: 1.05rem; color: #c8d9f5; max-width: 540px; margin: 0 auto 36px; }

    /* TOOL CARD */
    .tool-card {
      background: var(--white); border-radius: 20px; padding: 36px 32px;
      max-width: 680px; margin: 0 auto;
      box-shadow: 0 8px 40px rgba(0,0,0,0.2);
    }
    .toggle-group { display: flex; border: 2px solid var(--border); border-radius: 12px; overflow: hidden; margin-bottom: 28px; }
    .toggle-group button {
      flex: 1; padding: 12px 8px; border: none; background: var(--white);
      font-family: 'Inter', sans-serif; font-size: 0.85rem; font-weight: 600;
      color: var(--gray-text); cursor: pointer; transition: all 0.2s;
    }
    .toggle-group button.active { background: var(--blue-mid); color: white; }
    .toggle-group button:hover:not(.active) { background: var(--gray-light); }
    .input-group { display: flex; flex-direction: column; gap: 14px; margin-bottom: 22px; }
    .input-group label { font-size: 0.8rem; font-weight: 600; color: var(--blue-dark); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; display: block; }
    .input-group input {
      width: 100%; padding: 14px 16px; border: 2px solid var(--border); border-radius: 10px;
      font-family: 'Inter', sans-serif; font-size: 1rem; color: #1e293b; transition: border 0.2s; outline: none;
    }
    .input-group input:focus { border-color: var(--blue-mid); }
    .calc-btn {
      width: 100%; padding: 16px;
      background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
      color: white; border: none; border-radius: 12px;
      font-family: 'Inter', sans-serif; font-size: 1.05rem; font-weight: 700;
      cursor: pointer; transition: transform 0.15s, box-shadow 0.15s;
    }
    .calc-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(249,115,22,0.4); }
    .calc-btn:active { transform: translateY(0); }

    /* RESULTS */
    .result-box { margin-top: 24px; display: none; }
    .result-box.show { display: block; }
    .result-main { background: var(--gray-light); border: 2px solid var(--blue-light); border-radius: 14px; padding: 22px; text-align: center; margin-bottom: 16px; }
    .result-main .distance-value { font-size: 2.4rem; font-weight: 800; color: var(--blue-dark); }
    .result-main .distance-label { font-size: 0.9rem; color: var(--gray-text); margin-top: 4px; }
    .travel-impact { background: #fff7ed; border: 2px solid var(--orange); border-radius: 14px; padding: 18px 20px; margin-bottom: 16px; }
    .travel-impact .tip-text { font-size: 0.95rem; color: #7c3a00; line-height: 1.5; }
    .travel-impact .tip-text strong { color: var(--orange-dark); }
    .cta-btn {
      display: block; width: 100%; padding: 16px;
      background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
      color: white; text-align: center; text-decoration: none; border-radius: 12px;
      font-size: 1rem; font-weight: 700; transition: transform 0.15s, box-shadow 0.15s;
    }
    .cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(249,115,22,0.45); }

    /* AFFILIATE BANNER STRIP */
    .affiliate-strip {
      background: var(--gray-light);
      padding: 40px 24px;
      border-top: 3px solid var(--border);
    }
    .affiliate-strip h3 {
      text-align: center; font-size: 1rem; font-weight: 700; color: var(--blue-dark);
      text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 24px;
    }
    .affiliate-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
      max-width: 900px;
      margin: 0 auto;
    }
    .aff-card {
      background: white; border-radius: 16px; overflow: hidden;
      box-shadow: 0 4px 20px rgba(0,0,0,0.08);
      transition: transform 0.2s, box-shadow 0.2s;
      text-decoration: none;
      display: block;
    }
    .aff-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.14); }
    .aff-card img { width: 100%; height: 160px; object-fit: cover; display: block; }
    .aff-card .aff-body { padding: 16px; }
    .aff-card .aff-body p { font-size: 0.88rem; color: var(--gray-text); line-height: 1.5; }
    .aff-card .aff-cta {
      display: inline-block; margin-top: 10px;
      background: var(--orange); color: white;
      padding: 8px 16px; border-radius: 8px;
      font-size: 0.82rem; font-weight: 700;
    }

    /* SECTION */
    .section { max-width: 1100px; margin: 0 auto; padding: 70px 24px; }
    .section-title { text-align: center; font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; color: var(--blue-dark); margin-bottom: 12px; }
    .section-subtitle { text-align: center; color: var(--gray-text); font-size: 1rem; max-width: 560px; margin: 0 auto 48px; }

    /* CONTENT COLUMNS */
    .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
    .col-card {
      background: var(--gray-light); border-radius: 16px; padding: 28px 24px;
      border-top: 4px solid var(--blue-mid);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .col-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(30,95,173,0.12); }
    .col-card .icon { font-size: 2rem; margin-bottom: 14px; }
    .col-card h2 { font-size: 1.05rem; font-weight: 700; color: var(--blue-dark); margin-bottom: 12px; line-height: 1.4; }
    .col-card p { font-size: 0.92rem; color: var(--gray-text); line-height: 1.6; }
    .col-card a { display: inline-block; margin-top: 16px; color: var(--orange); font-weight: 600; font-size: 0.9rem; text-decoration: none; }
    .col-card a:hover { text-decoration: underline; }

    /* HOW IT WORKS */
    .how-section { background: var(--gray-light); }
    .steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; }
    .step { text-align: center; padding: 24px 16px; }
    .step .step-num {
      width: 48px; height: 48px; border-radius: 50%; background: var(--blue-mid); color: white;
      font-size: 1.2rem; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px;
    }
    .step h3 { font-size: 0.95rem; font-weight: 700; color: var(--blue-dark); margin-bottom: 8px; }
    .step p { font-size: 0.88rem; color: var(--gray-text); line-height: 1.6; }

    /* DIVIDER */
    .divider { height: 4px; background: linear-gradient(90deg, var(--blue-mid), var(--orange)); }

    /* HOW FAR IS PAGE */
    .howfar-hero {
      background: linear-gradient(135deg, #0f2040 0%, var(--blue-mid) 100%);
      padding: 60px 24px 40px; text-align: center; color: white;
    }
    .howfar-hero h1 { font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 800; margin-bottom: 12px; }
    .howfar-hero h1 span { color: var(--orange); }
    .howfar-hero p { color: #c8d9f5; font-size: 1rem; max-width: 520px; margin: 0 auto; }

    .city-search-bar {
      background: var(--blue-dark); padding: 20px 24px; display: flex; justify-content: center;
    }
    .city-search-bar input {
      width: 100%; max-width: 500px; padding: 12px 20px;
      border-radius: 30px; border: none; font-size: 1rem; outline: none;
      font-family: 'Inter', sans-serif;
    }

    .city-grid-wrap { max-width: 1100px; margin: 0 auto; padding: 50px 24px; }
    .city-letter { font-size: 1.5rem; font-weight: 800; color: var(--blue-dark); margin: 32px 0 16px; border-bottom: 3px solid var(--orange); padding-bottom: 6px; display: inline-block; }
    .city-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; margin-bottom: 20px; }
    .city-pair-card {
      background: var(--gray-light); border-radius: 12px; padding: 16px 18px;
      cursor: pointer; transition: all 0.2s; border: 2px solid transparent;
      text-decoration: none; display: flex; justify-content: space-between; align-items: center;
    }
    .city-pair-card:hover { border-color: var(--blue-mid); background: white; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(30,95,173,0.1); }
    .city-pair-card .route { font-weight: 700; font-size: 0.95rem; color: var(--blue-dark); }
    .city-pair-card .dist-info { font-size: 0.82rem; color: var(--gray-text); margin-top: 3px; }
    .city-pair-card .arrow { color: var(--orange); font-size: 1.2rem; }

    /* STATIC / LEGAL PAGES */
    .static-page { max-width: 760px; margin: 0 auto; padding: 60px 24px 80px; }
    .static-page h1 { font-size: 2rem; font-weight: 800; color: var(--blue-dark); margin-bottom: 8px; }
    .static-page .last-updated { color: var(--gray-text); font-size: 0.85rem; margin-bottom: 36px; }
    .static-page h2 { font-size: 1.15rem; font-weight: 700; color: var(--blue-dark); margin: 28px 0 10px; }
    .static-page p { font-size: 0.95rem; color: #374151; line-height: 1.7; margin-bottom: 14px; }
    .static-page ul { padding-left: 20px; margin-bottom: 14px; }
    .static-page ul li { font-size: 0.95rem; color: #374151; line-height: 1.7; margin-bottom: 6px; }
    .static-page a { color: var(--blue-mid); }

    /* CONTACT FORM */
    .contact-form { background: var(--gray-light); border-radius: 16px; padding: 36px; margin-top: 32px; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
    .form-group { display: flex; flex-direction: column; margin-bottom: 16px; }
    .form-group label { font-size: 0.82rem; font-weight: 600; color: var(--blue-dark); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
    .form-group input, .form-group textarea, .form-group select {
      padding: 12px 16px; border: 2px solid var(--border); border-radius: 10px;
      font-family: 'Inter', sans-serif; font-size: 0.95rem; outline: none; transition: border 0.2s;
    }
    .form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--blue-mid); }
    .form-group textarea { resize: vertical; min-height: 130px; }
    .submit-btn {
      padding: 14px 32px; background: linear-gradient(135deg, var(--orange), var(--orange-dark));
      color: white; border: none; border-radius: 10px;
      font-family: 'Inter', sans-serif; font-size: 1rem; font-weight: 700; cursor: pointer;
      transition: transform 0.15s, box-shadow 0.15s;
    }
    .submit-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(249,115,22,0.35); }
    .form-success { background: #dcfce7; border: 2px solid #16a34a; border-radius: 10px; padding: 16px 20px; display: none; color: #15803d; font-weight: 600; }

    /* FOOTER */
    footer {
      background: #0f2040; color: #6b8fbd;
      text-align: center; padding: 30px 24px 90px; font-size: 0.85rem;
    }
    footer a { color: var(--orange); text-decoration: none; margin: 0 6px; }
    footer .footer-links { margin-bottom: 12px; }

    /* STICKY FOOTER */
    .sticky-footer {
      position: fixed; bottom: 0; left: 0; right: 0;
      background: var(--blue-dark); padding: 12px 20px;
      display: flex; align-items: center; justify-content: center; gap: 14px;
      z-index: 999; border-top: 3px solid var(--orange);
    }
    .sticky-footer p { color: #b0c8ef; font-size: 0.88rem; }
    .sticky-footer a {
      background: var(--orange); color: white; padding: 8px 18px; border-radius: 8px;
      font-size: 0.88rem; font-weight: 700; text-decoration: none; white-space: nowrap;
    }
    .sticky-footer a:hover { background: var(--orange-dark); }

    @media (max-width: 700px) {
      .tool-card { padding: 24px 18px; }
      .nav-links { display: none; }
      .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0; background: var(--blue-dark); padding: 16px 24px; gap: 14px; }
      .hamburger { display: flex; }
      .sticky-footer p { display: none; }
      .form-row { grid-template-columns: 1fr; }
    }