.site-header {
    padding-top: var(--header-spacing-top);
    padding-bottom: var(--header-spacing-bottom);
}
.header-inner {
    max-width: 1400px;
    margin: 0 auto;
}
.site-logo img {
    height: var(--logo-height);
    width: auto;
}

.menu-toggle {
    position: fixed;
    top: var(--header-menu-fixed-top);
    right: var(--header-menu-fixed-right);
    width: var(--header-menu-fixed-width);
    height: var(--header-menu-fixed-height);
    border: none;
    background: none;
    cursor: pointer;
    z-index: 100;
}
.menu-toggle .bar {
    position: absolute;
    left: 50%;
    display: block;
    width: 100%;
    height: 4px;
    background-color: var(--text-primary);
}
.menu-toggle .bar:nth-child(1) {
    top: 0;
    transform: translate(-50%, 0);
}
.menu-toggle .bar:nth-child(2) {
    top: 50%;
    transform: translate(-50%, -50%);
}
.menu-toggle .bar:nth-child(3) {
    top: 100%;
    transform: translate(-50%, -100%);
}

.drawer-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100vh;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(3px);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: 0.2s ease; 
}
.drawer-overlay.is-open { 
    opacity: 1; 
    visibility: visible; 
}


.drawer-menu {
    position: fixed;
    top: 0; 
    right: 0;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--bg-gray);
    z-index: 160;
    padding: var(--header-menu-fixed-top) var(--header-menu-fixed-right);
    box-sizing: border-box;
    box-shadow: -4px 0 8px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
    overflow-y: auto;
    overscroll-behavior: none;
    -webkit-overflow-scrolling: auto;
}


.drawer-menu.is-open { 
    transform: translateX(0); 
}

.drawer-close {
    background: none;
    border: none;
    cursor: pointer;
    display: block;
    margin-left: auto;
    margin-bottom: 40px;
}
.drawer-nav li { margin-bottom: 20px; font-weight: bold; font-size: 1.1rem; }
.drawer-content-inner {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-left: 16px;
}


.drawer-section {
    display: flex;
    gap: 40px;
    margin-top: 12px;
}
.drawer-mt {
    margin-top: 20px;
}


.vertical-heading {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 20px;
    gap: 15px;
}
.vertical-heading .v-line {
    width: 2px;
    height: 25px;
    background-color: #808080;
}
.vertical-heading .v-text {
    writing-mode: vertical-rl;
    color: #808080;
    font-size: 1.125rem;
    font-weight: bold;
    letter-spacing: 0.1em;
}


.drawer-links-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
    justify-content: center;
    padding-top: 40px;
}
.drawer-links-group.pt-large {
    padding-top: 48px;
}


.drawer-other-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
    padding-top: 48px;
    padding-left: 36px;
}


.drawer-normal-link,
.drawer-blank-link {
    font-weight: 200;
    font-size: 1rem;
    color: var(--text-primary);
    text-decoration: none;
}
.blank-link-icon {
    width: 12px;
    height: 12px;
    margin-left: 8px;
    vertical-align: middle;
}

.drawer-socials {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 48px;
    padding-bottom: 32px;
}
.drawer-socials a {
    color: #000;
    transition: opacity 0.3s;
}
.drawer-socials a:hover {
    opacity: 0.5;
}
.sns-icon {
    width: 24px;
    height: 24px;
}