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

body {
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f5f5;
    color: #222;
    display: flex;
    justify-content: center;
    align-items: center;
}

.speedtest {
    width: min(900px, 92%);
    text-align: center;
}

.hero {
    background: #fff;
    padding: 70px 30px;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.eyebrow {
    font-size: 13px;
    font-weight: bold;
    letter-spacing: 2px;
    color: #777;
    margin-bottom: 18px;
}

h1 {
    font-size: clamp(30px, 5vw, 52px);
    margin-bottom: 12px;
}

.subtitle {
    color: #777;
    margin-bottom: 45px;
}

.speed-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 35px;
}

.speed-value {
    font-size: clamp(70px, 13vw, 140px);
    line-height: 0.9;
    font-weight: 300;
}

.speed-unit {
    font-size: 18px;
    color: #777;
    margin-top: 12px;
}

.start-button {
    border: none;
    border-radius: 30px;
    padding: 16px 36px;
    background: #222;
    color: white;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
}

.start-button:hover {
    background: #444;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 18px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.stat-label {
    display: block;
    font-size: 12px;
    letter-spacing: 1px;
    color: #888;
    margin-bottom: 8px;
}

.stat-card strong {
    font-size: 22px;
}

@media (max-width: 600px) {
    .hero {
        padding: 50px 20px;
    }

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