* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --dark: #0f172a;
    --muted: #64748b;
    --light: #f8fafc;
    --border: #e2e8f0;
    --success: #15803d;
    --danger: #dc2626;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background:
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.15), transparent 35%),
        linear-gradient(135deg, #f8fbff 0%, #eef4ff 100%);
    color: var(--dark);
    min-height: 100vh;
}

.page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 35px 18px;
}

.hero {
    width: 100%;
    max-width: 1000px;
    text-align: center;
}

.badge {
    display: inline-block;
    background: #dbeafe;
    color: var(--primary-dark);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1.5px;
    margin-bottom: 22px;
}

h1 {
    font-size: clamp(2.2rem, 6vw, 4.5rem);
    line-height: 1.05;
    margin-bottom: 22px;
}

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

.intro {
    max-width: 700px;
    margin: 0 auto 40px;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.7;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 35px;
}

.feature {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 25px 20px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

.icon {
    width: 46px;
    height: 46px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: #eff6ff;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 21px;
    font-weight: bold;
}

.feature h3 {
    margin-bottom: 8px;
}

.feature p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.5;
}

.notify-card {
    max-width: 760px;
    margin: 0 auto;
    background: white;
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 30px;
    box-shadow: 0 15px 45px rgba(15, 23, 42, 0.09);
}

.notify-card h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

.notify-card > p {
    color: var(--muted);
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 12px;
    align-items: end;
    text-align: left;
}

.field label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 7px;
}

input {
    width: 100%;
    padding: 14px 15px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    outline: none;
    font-size: 15px;
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

button {
    border: none;
    background: var(--primary);
    color: white;
    padding: 14px 22px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    min-height: 47px;
}

button:hover {
    background: var(--primary-dark);
}

button:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.message {
    margin-top: 15px;
    font-size: 14px;
    min-height: 20px;
}

.message.success {
    color: var(--success);
}

.message.error {
    color: var(--danger);
}

footer {
    margin-top: 30px;
    color: #94a3b8;
    font-size: 13px;
}

@media (max-width: 760px) {
    .page {
        padding: 25px 14px;
        align-items: flex-start;
    }

    .hero {
        padding-top: 25px;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .feature {
        padding: 20px;
    }

    .notify-card {
        padding: 22px 17px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    button {
        width: 100%;
    }

    .intro {
        font-size: 15px;
    }
}