:root {
    --bg: #03040a;
    --panel: #071028;
    --cyan: #00ffd5;
    --purple: #6a00ff;
    --text-primary: #e6f7ff;
    --text-muted: #9fb3c6;
}

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

html,
body {
    height: 100%;
}

body {
    min-height: 100vh;
    margin: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(106, 0, 255, 0.08), transparent 60%),
        linear-gradient(180deg, var(--bg), #050618);
    color: var(--text-primary);
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    padding: 0;
}

.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 80px 20px 40px;
}

.card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 48px 56px;
    text-align: center;
    max-width: 720px;
    width: 100%;
    backdrop-filter: blur(8px);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

h1 {
    font-size: 2.4rem;
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.last-updated {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.divider {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 213, 0.3), transparent);
    margin: 24px auto;
}

.section {
    text-align: left;
    margin-bottom: 28px;
}

.section:last-child {
    margin-bottom: 0;
}

h2 {
    font-size: 1.2rem;
    color: var(--cyan);
    margin-bottom: 10px;
    font-weight: 600;
}

h3 {
    font-size: 1rem;
    color: var(--text-primary);
    margin: 14px 0 6px;
    font-weight: 600;
}

p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

ul {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    padding-left: 24px;
    margin-top: 6px;
}

li {
    margin-bottom: 4px;
}

a {
    color: var(--cyan);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.back-btn {
    position: fixed;
    top: 24px;
    left: 32px;
    z-index: 10000;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: #00d4ff;
    text-decoration: none;
    border-radius: 6px;
    padding: 10px 20px;
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    cursor: pointer;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.08);
}

.back-btn:hover {
    background: rgba(0, 212, 255, 0.2);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.15);
}

@media (max-width: 600px) {
    .card {
        padding: 32px 24px;
    }

    h1 {
        font-size: 1.8rem;
    }

    .back-btn {
        position: static;
        display: inline-block;
        margin-bottom: 16px;
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .container {
        padding: 20px 12px 40px;
    }
}

@media (max-width: 360px) {
    .card {
        padding: 24px 16px;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1rem;
    }

    p,
    ul {
        font-size: 0.85rem;
    }
}