body {
      background: linear-gradient(135deg, #e0e5ec 0%, #a5b4cb 100%);
      color: #24344d;
      font-family: 'Segoe UI', sans-serif;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100vh;
      margin: 0;
}
a, h2, h3 {
    color: #e4572e;
}
h1 {
    font-size: 2.6em;
    margin-bottom: 0.25em;
    font-weight: 900;
    color: #2563eb;
    letter-spacing: -1.5px;
}
p {
    font-size: 1.2em;
    margin-bottom: 1.3em;
    color: #4c5c73;
    font-weight: 500;
}
header, footer {
    background: #dde7f2;
    border-top: 3px solid #e4572e;
}
.warning {
    background: #fff3f0;
    border-left: 5px solid #e4572e;
    padding: 1em;
}
.container {
    text-align: center;
    padding: 40px 24px;
    background: #f5f7fa;
    border-radius: 18px;
    box-shadow: 0 6px 32px 0 rgba(36,52,77,0.14);
    border: 1.5px solid #b3c0d6;
    max-width: 340px;
}
.notify {
    margin-top: 1em;
}
input[type="email"] {
    padding: 10px;
    border-radius: 4px 0 0 4px;
    border: 1.5px solid #b3c0d6;
    outline: none;
    width: 220px;
    font-size: 1em;
    background: #e0e5ec;
    color: #24344d;
    transition: border 0.2s;
}
input[type="email"]:focus {
    border-color: #2563eb;
}
button {
    padding: 10px 18px;
    border-radius: 0 4px 4px 0;
    border: none;
    background: #2563eb;
    color: #fff;
    font-size: 1em;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.22s, box-shadow 0.15s;
    box-shadow: 0 2px 8px 0 rgba(37,99,235,0.10);
}
button:hover {
    background: #2061c6;
    box-shadow: 0 4px 16px 0 rgba(37,99,235,0.15);
}
small {
    display: block;
    margin-top: 10px;
    color: #7b8aa3;
}
@media (max-width: 480px) {
    .container {
        max-width: 95vw;
        padding: 28px 4vw;
    }
    input[type="email"] {
        width: 120px;
    }
    }