:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --accent: #5B9BD5;
    --accent-dark: #4a86bd;
    --border: #e5e7eb;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.app {
    max-width: 520px;
    margin: 0 auto;
    padding: 32px 20px 40px;
}

.hero {
    text-align: center;
    margin-bottom: 28px;
}

.hero .emoji {
    font-size: 64px;
    line-height: 1;
    margin-bottom: 12px;
}

.hero h1 {
    margin: 0 0 6px;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.hero .subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
}

.features {
    background: var(--card);
    border-radius: 14px;
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 28px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
}

.feature + .feature {
    border-top: 1px solid var(--border);
}

.feature-emoji {
    font-size: 28px;
    line-height: 1;
    flex-shrink: 0;
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.feature-text strong {
    font-size: 15px;
    font-weight: 600;
}

.feature-text span {
    font-size: 13px;
    color: var(--muted);
}

.cta {
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    transition: background 0.15s ease;
}

.btn:hover, .btn:active {
    background: var(--accent-dark);
}

.hint {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 13px;
}