/* 内页统一页头、页尾。该文件应在页面专属 CSS 之后加载。 */
body.site-page {
    padding-top: var(--header-h);
}

body.site-page .site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    width: 100%;
    height: var(--header-h);
    background: rgba(250, 247, 240, .94);
    border-bottom: 1px solid var(--line);
    box-shadow: none;
    backdrop-filter: blur(14px);
}

body.site-page .site-header.scrolled {
    position: fixed;
    background: rgba(250, 247, 240, .98);
    box-shadow: 0 10px 35px rgba(55, 55, 45, .05);
}

body.site-page .site-header > .site-shell,
body.site-page .site-header > .container {
    width: min(var(--container), calc(100% - 80px));
    max-width: none;
    height: 100%;
    min-height: 0;
    margin-inline: auto;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

body.site-page .site-brand,
body.site-page .site-logo {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 15px;
    color: var(--ink);
    text-decoration: none;
    white-space: nowrap;
}

body.site-page .site-brand img,
body.site-page .site-logo img {
    width: 116px;
    height: auto;
}

body.site-page .site-brand > span {
    width: 1px;
    height: 28px;
    padding: 0;
    border: 0;
    background: var(--line-strong);
}

body.site-page .site-brand strong,
body.site-page .site-logo span {
    padding: 0;
    border: 0;
    font-size: 18px;
    font-weight: 650;
    letter-spacing: .04em;
}

body.site-page .site-nav {
    position: static;
    inset: auto;
    max-height: none;
    padding: 0;
    border: 0;
    background: transparent;
    display: flex;
    align-items: center;
    gap: clamp(18px, 2.1vw, 36px);
    opacity: 1;
    overflow: visible;
}

body.site-page .site-nav a {
    position: relative;
    padding: 30px 0 24px;
    border: 0;
    color: var(--ink);
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 550;
    white-space: nowrap;
}

body.site-page .site-nav a::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 18px;
    left: 0;
    width: auto;
    height: 1px;
    background: var(--brass);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--ease);
}

body.site-page .site-nav a:hover::after,
body.site-page .site-nav a.active::after {
    right: 0;
    transform: scaleX(1);
    transform-origin: left;
}

body.site-page .site-nav a.active {
    color: var(--brass);
}

body.site-page .nav-toggle,
body.site-page .mobile-menu-btn {
    width: 44px;
    height: 44px;
    padding: 8px;
    border: 0;
    background: transparent;
    color: var(--ink);
    display: none;
    cursor: pointer;
}

body.site-page .nav-toggle {
    font-size: 28px;
}

body.site-page .site-footer {
    background: #ebe6dc;
    border-top: 1px solid var(--line);
    color: var(--muted);
}

@media (max-width: 1080px) {
    body.site-page .site-header > .site-shell,
    body.site-page .site-header > .container { width: calc(100% - 48px); }
    body.site-page .site-brand img,
    body.site-page .site-logo img { width: 104px; }
    body.site-page .site-nav { gap: 17px; }
    body.site-page .site-nav a { font-size: 13px; }
}

@media (max-width: 820px) {
    body.site-page .site-header > .site-shell,
    body.site-page .site-header > .container { width: calc(100% - 36px); }
    body.site-page .site-brand img,
    body.site-page .site-logo img { width: 96px; }
    body.site-page .site-brand strong,
    body.site-page .site-logo span { font-size: 15px; }
    body.site-page .nav-toggle,
    body.site-page .mobile-menu-btn { display: block; }
    body.site-page .mobile-menu-btn { display: flex; }
    body.site-page .mobile-menu-btn span { flex: 0 0 1px; height: 1px; margin: 0; }
    body.site-page .site-nav {
        position: fixed;
        inset: var(--header-h) 0 auto;
        max-height: 0;
        padding: 0 24px;
        background: rgba(250, 247, 240, .99);
        border-bottom: 1px solid transparent;
        display: grid;
        gap: 0;
        overflow: hidden;
        opacity: 0;
        pointer-events: none;
        transition: max-height var(--ease), opacity var(--ease), padding var(--ease), border-color var(--ease);
    }
    body.site-page .site-nav.active,
    body.site-page .site-nav.open {
        max-height: calc(100vh - var(--header-h));
        padding-top: 14px;
        padding-bottom: 20px;
        border-bottom-color: var(--line);
        opacity: 1;
        pointer-events: auto;
    }
    body.site-page .site-nav a {
        padding: 14px 4px;
        border-bottom: 1px solid var(--line);
        font-family: var(--serif);
        font-size: 19px;
    }
    body.site-page .site-nav a::after { display: none; }
}

@media (max-width: 540px) {
    body.site-page .site-header > .site-shell,
    body.site-page .site-header > .container { width: calc(100% - 28px); }
    body.site-page .site-brand strong,
    body.site-page .site-logo span { display: none; }
    body.site-page .site-brand > span { display: none; }
}