.site-header {
    display: none;
    /* Tắt menu — gỡ comment để bật lại */
}

/*
.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 20;
    height: var(--header-height);
    padding: var(--space-3) var(--gutter-x);
    background: rgba(244, 247, 242, 0.88);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
*/

.brand {
    font-family: var(--font-heading);
    font-weight: var(--fw-black);
    font-size: var(--text-lg);
    letter-spacing: 0.04em;
    color: var(--color-primary);
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    min-height: 46px;
    padding: 0 var(--space-5);
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--fw-bold);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn--primary:hover {
    background: var(--color-primary-deep);
}

.btn--accent {
    background: var(--color-accent);
    color: var(--color-white);
}

.btn--accent:hover {
    background: #d66d13;
}

.btn--ghost {
    color: var(--color-primary);
    border-color: rgba(var(--color-primary-rgb), 0.4);
    background: transparent;
}

.btn--ghost:hover {
    background: rgba(var(--color-primary-rgb), 0.06);
}

.btn--outline {
    border-color: var(--color-ink-30);
    color: var(--color-ink);
    background: var(--color-surface);
}

.btn--outline:hover {
    border-color: rgba(var(--color-primary-rgb), 0.3);
    color: var(--color-primary);
}

.dot-nav {
    position: fixed;
    right: 18px;
    top: 50%;
    z-index: 20;
    transform: translateY(-50%);
}

.dot-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-2);
}

.dot-nav__item {
    width: 13px;
    height: 13px;
    border-radius: 50%;
    border: 2px solid rgba(var(--color-primary-rgb), 0.4);
    background: var(--color-surface);
    cursor: pointer;
    padding: 0;
    transition: background 0.2s, border-color 0.2s;
}

.dot-nav__item.is-active {
    border-color: var(--color-primary);
    background: var(--color-primary);
}

@media (max-width: 840px) {
    .site-header {
        padding: var(--space-3) var(--gutter-x-mobile);
    }

    .site-header__actions .btn--ghost {
        display: none;
    }

    .site-header__actions .btn {
        min-height: 42px;
        padding-inline: 14px;
        font-size: var(--text-sm);
    }

    .dot-nav {
        display: none;
    }
}