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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #ff3b30 0%, #ff375f 25%, #af52de 75%, #7c3aed 100%);
    color: #ffffff;
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

main {
    max-width: 600px;
    width: 100%;
    text-align: center;
}

.intro {
    margin-bottom: clamp(3rem, 8vw, 6rem);
}

.intro h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 400;
    margin-bottom: clamp(0.5rem, 2vw, 1rem);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.intro h2 {
    font-size: clamp(1rem, 3vw, 1.4rem);
    font-weight: 300;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.description {
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    color: rgba(255, 255, 255, 0.9);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.6;
    font-weight: 300;
}

.links {
    display: flex;
    gap: clamp(1rem, 3vw, 2rem);
    justify-content: center;
    flex-wrap: wrap;
}

.link {
    color: #ffffff;
    text-decoration: none;
    font-size: clamp(0.9rem, 2vw, 1rem);
    font-weight: 400;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.2s ease;
}

.link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: #ffffff;
    transition: width 0.3s ease;
}

.link:hover {
    color: rgba(255, 255, 255, 0.7);
}

.link:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    .container {
        padding: 2rem 1.5rem;
    }

    .intro {
        margin-bottom: 4rem;
    }

    .intro h1 {
        font-size: clamp(2.5rem, 12vw, 3.5rem);
        margin-bottom: 1.5rem;
    }

    .intro h2 {
        font-size: clamp(1.1rem, 4vw, 1.3rem);
        margin-bottom: 2rem;
    }

    .description {
        font-size: clamp(1rem, 4vw, 1.1rem);
        line-height: 1.7;
        padding: 0 0.5rem;
    }

    .links {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
        margin-top: 2rem;
    }

    .link {
        font-size: 1.1rem;
        padding: 1rem 0;
        min-width: 120px;
        text-align: center;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        transition: all 0.3s ease;
    }

    .link::after {
        display: none;
    }

    .link:hover {
        background: rgba(255, 255, 255, 0.2);
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    }
}

@media (max-width: 480px) {
    html {
        scroll-behavior: auto;
    }

    body {
        background: linear-gradient(180deg, #ff3b30 0%, #ff375f 30%, #af52de 70%, #7c3aed 100%);
    }

    .container {
        padding: 1.5rem 1rem;
        justify-content: flex-start;
        padding-top: 20vh;
    }

    .intro {
        margin-bottom: 3rem;
    }

    .intro h1 {
        font-size: 2.2rem;
        margin-bottom: 1rem;
        line-height: 1.1;
    }

    .intro h2 {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
    }

    .description {
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 1rem;
    }

    .links {
        gap: 1rem;
        width: 100%;
        max-width: 240px;
        margin: 0 auto;
    }

    .link {
        font-size: 0.9rem;
        padding: 0.7rem 1rem;
        width: 100%;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.15);
        border: 1px solid rgba(255, 255, 255, 0.25);
    }

    .link:hover {
        background: rgba(255, 255, 255, 0.25);
        border-color: rgba(255, 255, 255, 0.4);
    }
}