.site-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 0.8rem;
    background: rgba(255, 249, 243, 0.82);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 15;
    backdrop-filter: blur(8px);
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
    margin: 0 auto;
}

.brand-mark__k {
    color: var(--accent);
}

.brand-mark__logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
    flex: 0 0 auto;
}

.main-nav {
    order: 3;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.2rem;
    border-radius: 999px;
    background: var(--surface-strong);
    border: 1px solid var(--line);
    overflow-x: auto;
    scrollbar-width: thin;
}

.main-nav__link {
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
    color: var(--text-muted);
    font-weight: 600;
    white-space: nowrap;
    transition: background 0.2s ease, color 0.2s ease;
}

.main-nav__link:hover,
.main-nav__link.is-active {
    color: #fff;
    background: linear-gradient(140deg, #ff972e 0%, #f27a1a 58%, #d9660e 100%);
}

.header-action {
    margin-left: auto;
    padding: 0.58rem 1rem;
    border-radius: 999px;
    color: #fff;
    font-weight: 700;
    background: linear-gradient(140deg, #ff972e 0%, #f27a1a 58%, #d9660e 100%);
    box-shadow: 0 10px 18px rgba(185, 93, 20, 0.24);
    white-space: nowrap;
    min-height: 40px;
}

@media (min-width: 901px) {
    .site-header {
        flex-wrap: nowrap;
        gap: 1rem;
        padding: 1.1rem clamp(1rem, 2vw, 2rem);
    }

    .brand-mark {
        margin: 0;
    }

    .main-nav {
        order: initial;
        width: auto;
        max-width: 60%;
        justify-content: flex-start;
    }
}