:root {
    --bg: #EDF0F3;
    --surface: #FFFFFF;
    --ink: #1B2430;
    --ink-soft: #5A6675;
    --line: #D7DDE4;

    --radius: 14px;
    --shadow: 0 1px 2px rgba(27,36,48,.06), 0 8px 24px rgba(27,36,48,.08);
    --font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font);
    -webkit-font-smoothing: antialiased;
}

.stage {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    padding: 40px 20px;
}

.hero-gif {
    max-width: 100%;
    max-height: 40vh;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.tool-link {
    font: inherit;
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    padding: 16px 32px;
    border-radius: 12px;
    background: var(--ink);
    color: #fff;
    box-shadow: var(--shadow);
    transition: transform .08s ease, background .15s ease;
}
.tool-link:hover { background: #0f1620; }
.tool-link:active { transform: translateY(1px); }

@media (max-width: 480px) {
    .links { flex-direction: column; width: 100%; max-width: 280px; }
    .tool-link { text-align: center; }
}