:root {
    /* Browser ko batane ke liye ke yeh page dono modes support karta hai */
    color-scheme: light dark;

    /* Light Mode Variables (Default) */
    --navy: #0a1f5c;
    --navy-deep: #071540;
    --teal: #0d9488;
    --amber: #f59e0b;
    --coral: #ef4444;
    --sky: #0ea5e9;
    --paper: #fbfaf6;
    --card: #ffffff;
    
    --bg-gradient-start: #eef4ff;
    --text-color: #1f2937;
    --border-color: #eef1f6;
    --zebra-bg: #f5f8ff;
    --footer-text: #6b7280;
    --footer-border: #e5e7eb;
    --u-text: var(--navy-deep);
  }

  /* Jab browser dark mode mein ho to sirf in variables ko override karein */
  @media (prefers-color-scheme: dark) {
    :root {
      --navy: #38bdf8;       /* Dark mode headings ke liye bright sky blue */
      --navy-deep: #7dd3fc;  
      --paper: #111827;      /* Dark body background */
      --card: #1f2937;       /* Dark card background */
      
      --bg-gradient-start: #0f172a;
      --text-color: #f3f4f6;
      --border-color: #374151;
      --zebra-bg: #111827;
      --footer-text: #9ca3af;
      --footer-border: #374151;
      --u-text: #f3f4f6;
    }
  }

  * { box-sizing: border-box; }
  
  body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--paper) 260px, var(--paper) 100%);
    color: var(--text-color);
    line-height: 1.75;
  }
  
  .wrap { max-width: 100%; margin: 0 auto; padding: 0 10px 20px; }
  
  header.hero {
    /* Hero section hamesha custom branding dark blue hi rahega */
    background: linear-gradient(120deg, #071540, #0a1f5c 55%, var(--sky));
    color: #fff;
    padding: 50px 20px 60px;
    text-align: center;
    border-bottom: 6px solid var(--amber);
  }
  
  header.hero h1 {
    color: #ffffff !important;
    font-size: 2.3rem;
    margin: 0 0 12px;
    letter-spacing: .5px;
    text-shadow: 0 2px 10px rgba(0,0,0,.25);
  }
  
  header.hero p {
    max-width: 640px;
    margin: 0 auto;
    color: #dce6ff;
    font-size: 1.5rem;
  }
  
  .badge-row { margin-top: 22px; display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
  
  .hero .badge-row .badge {
    background: rgba(255,255,255,.15);
    border: 1px solid rgba(255,255,255,.35);
    color: #fff;
    padding: 10px 14px;
    border-radius: 20px;
    font-size: 1.2rem;
  }
  
  h2 {
    color: var(--navy);
    font-size: 1.5rem;
    margin-top: 42px;
    padding-bottom: 8px;
    border-bottom: 3px solid var(--amber);
    display: inline-block;
  }
  
  h3 {
    color: var(--navy);
    font-size: 1.15rem;
    margin-top: 28px;
  }
  
  u {
    text-decoration-color: var(--coral);
    text-decoration-thickness: 2px;
    font-weight: 600;
    color: var(--u-text);
  }
  
  p { margin: 14px 0; }
  
  .callout {
    background: var(--card);
    border-left: 6px solid var(--teal);
    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.15);
    padding: 18px 22px;
    border-radius: 8px;
    margin: 24px 0;
  }
  
  .callout.amber { border-left-color: var(--amber); }
  .callout.coral { border-left-color: var(--coral); }
  
  table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: var(--card);
    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.15);
    border-radius: 10px;
    overflow: hidden;
  }
  
  thead tr { background: linear-gradient(90deg, #0a1f5c, var(--sky)); }
  thead th { color: #fff; padding: 12px 14px; text-align: left; font-size: 1.2rem; }
  tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border-color); font-size: 1.4rem; }
  tbody tr:nth-child(even) { background: var(--zebra-bg); }
  tbody tr:last-child td { border-bottom: none; }
  
  .steps {
    display: grid;
    gap: 14px;
    margin: 20px 0;
  }
  
  .step {
    display: flex;
    gap: 14px;
    background: var(--card);
    border-radius: 10px;
    padding: 14px 18px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.1);
    align-items: flex-start;
  }
  
  .step .num {
    flex: 0 0 34px;
    height: 34px;
    border-radius: 50%;
    background: #0a1f5c;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
  }
  
  .tip-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin: 20px 0;
  }
  
  .tip {
    background: var(--card);
    border-top: 4px solid var(--teal);
    border-radius: 10px;
    padding: 16px 18px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.1);
    font-size: 1.4rem;
  }
  
  .tip strong { color: var(--navy); }
  
  .faq {
    background: var(--card);
    border-radius: 10px;
    padding: 16px 20px;
    margin: 14px 0;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.1);
  }
  
  .faq h3 { margin-top: 0; color: var(--navy); }
  
  footer {
    text-align: center;
    color: var(--footer-text);
    font-size: 1.25rem;
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid var(--footer-border);
  }
  
  .prompt-box {
    background: #071540;
    color: #e7ecff;
    border-radius: 10px;
    padding: 16px 20px;
    font-family: Consolas, Monaco, monospace;
    font-size: 1.35rem;
    margin: 16px 0;
    overflow-x: auto;
  }