:root {
    --black: #111111;
    --white: #ffffff;
    --gray: #6b6b6b;
    --border: #e8e8e8;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Merriweather', serif;
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 2.5rem;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
}

.header-left img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.header-right a {
    text-decoration: none;
    color: var(--gray);
    font-size: 0.9rem;
    font-weight: 400;
    transition: color 0.2s ease;
}

.header-right a:hover {
    color: var(--black);
}

footer {
    text-align: center;
    padding: 2.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--gray);
}

@media (max-width: 820px) {
    header {
        flex-direction: column;
        gap: 0.9rem;
        padding: 1rem 1.5rem;
    }

    .header-right {
        gap: 1.1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
}