:root {
    --bg: #ffffff;
    --bg-card: #f8f9fa;
    --bg-highlight: #eff6ff;
    --text: #1a1a2e;
    --text-muted: #6b7280;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --border: #e5e7eb;
    --border-highlight: #bfdbfe;
    --dot: #22c55e;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1117;
        --bg-card: #1a1d2e;
        --bg-highlight: #1e2a4a;
        --text: #e4e4e7;
        --text-muted: #9ca3af;
        --accent: #60a5fa;
        --accent-hover: #93c5fd;
        --border: #2d3348;
        --border-highlight: #3b5998;
        --dot: #4ade80;
    }
}

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

body {
    font-family: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.container {
    max-width: 540px;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.logo img {
    border-radius: 8px;
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.02em;
}

.logo-an {
    color: var(--accent);
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 0.25rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s;
}

a:hover {
    color: var(--accent-hover);
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 0.75rem;
}

.card.highlight {
    background: var(--bg-highlight);
    border-color: var(--border-highlight);
}

.card h2 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.card p strong {
    color: var(--text);
}

.card ul {
    list-style: none;
    padding: 0;
    counter-reset: steps;
}

.card ul li {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 0.3rem 0 0.3rem 1.75rem;
    position: relative;
    counter-increment: steps;
}

.card ul li::before {
    content: counter(steps);
    position: absolute;
    left: 0;
    width: 1.25rem;
    height: 1.25rem;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    top: 0.4rem;
}

.card ul li strong {
    color: var(--text);
}

.status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--dot);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

footer {
    text-align: center;
    margin-top: 2.5rem;
}

.learn-more {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.copy {
    color: var(--text-muted);
    font-size: 0.75rem;
}