.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    min-height: var(--header-height);
    background: var(--color-warm-white);
    border-bottom: 1px solid rgba(24, 54, 93, 0.1);
    box-shadow: 0 6px 18px rgba(16, 40, 70, 0.03);
    transition: box-shadow var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
}

.site-header.is-scrolled {
    background: rgba(250, 248, 243, 0.96);
    border-bottom-color: rgba(24, 54, 93, 0.14);
    box-shadow: 0 8px 20px rgba(16, 40, 70, 0.05);
}

@supports (backdrop-filter: blur(10px)) {
    .site-header.is-scrolled {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    min-height: var(--header-height);
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: clamp(0.8rem, 1.2vw, 1rem);
    flex-shrink: 0;
    max-width: min(18rem, 52vw);
}

.site-brand__mark {
    display: block;
    width: clamp(2.9rem, 4vw, 3.25rem);
    height: auto;
    flex: 0 0 auto;
}

.site-brand__wordmark {
    display: flex;
    flex: 0 0 auto;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    line-height: 1;
}

.site-brand__wordmark-primary,
.site-brand__wordmark-secondary {
    display: block;
    color: var(--color-navy-dark);
    font-family: var(--font-body);
    white-space: nowrap;
}

.site-brand__wordmark-primary {
    font-size: clamp(1.08rem, 1.45vw, 1.28rem);
    font-weight: 700;
    line-height: 0.95;
    letter-spacing: 0.12em;
}

.site-brand__wordmark-secondary {
    margin-top: 0.2rem;
    font-size: clamp(0.55rem, 0.72vw, 0.67rem);
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.44em;
}

.nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.625rem 0.95rem;
    border: 1px solid rgba(24, 54, 93, 0.12);
    border-radius: var(--radius-pill);
    background: var(--color-warm-white);
    color: var(--color-navy-dark);
    cursor: pointer;
    transition:
        background-color var(--motion-fast) var(--motion-ease-interaction),
        border-color var(--motion-fast) var(--motion-ease-interaction),
        transform var(--motion-fast) var(--motion-ease-interaction),
        box-shadow var(--motion-fast) var(--motion-ease-interaction);
}

.nav-toggle:hover {
    background: var(--color-warm-white);
    border-color: rgba(24, 54, 93, 0.24);
    box-shadow: 0 8px 18px rgba(16, 40, 70, 0.06);
}

.nav-toggle__box {
    display: inline-flex;
    flex-direction: column;
    gap: 0.2rem;
}

.nav-toggle__box span {
    display: block;
    width: 1rem;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
}

.nav-toggle__label {
    font-size: 0.95rem;
    font-weight: 600;
}

.site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    padding: 0 1rem 1rem;
    background: transparent;
}

.site-nav.is-open {
    display: block;
}

.site-nav__list,
.site-footer__links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav__list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 1rem;
    background: var(--color-beige);
    border: 1px solid rgba(24, 54, 93, 0.1);
    border-radius: 1.5rem;
    box-shadow: 0 24px 50px rgba(16, 40, 70, 0.14);
}

.site-nav__list a:not(.button) {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
    font-family: var(--font-body);
    color: var(--color-text-dark);
    font-weight: 500;
    letter-spacing: 0.01em;
}

.site-nav__list a:not(.button):hover {
    color: var(--color-navy);
}

.site-nav__languages {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    color: var(--color-text-muted);
}

.site-nav__languages .is-active {
    color: var(--color-navy);
    font-weight: 700;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    width: fit-content;
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    font-family: var(--font-body);
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
    transition:
        color var(--motion-fast) var(--motion-ease-interaction),
        background-color var(--motion-fast) var(--motion-ease-interaction),
        border-color var(--motion-fast) var(--motion-ease-interaction),
        transform var(--motion-fast) var(--motion-ease-interaction),
        box-shadow var(--motion-fast) var(--motion-ease-interaction);
}

.button--primary {
    color: var(--color-navy-dark);
    background: linear-gradient(135deg, #d2b56b 0%, #c6a04a 100%);
    box-shadow: 0 8px 18px rgba(201, 166, 75, 0.18);
}

.button--secondary {
    color: var(--color-navy);
    border-color: rgba(24, 54, 93, 0.18);
    background: var(--color-white);
}

.button--gold {
    color: var(--color-navy-dark);
    background: linear-gradient(135deg, #d4ba74 0%, #c5a04a 100%);
    box-shadow: 0 10px 22px rgba(201, 166, 75, 0.18);
}

.button--hero-secondary {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.62);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.button:hover {
    transform: translateY(-1px);
}

.button:active {
    transform: translateY(0);
}

.button--primary:hover,
.button--gold:hover {
    color: var(--color-navy-dark);
    box-shadow: 0 12px 26px rgba(201, 166, 75, 0.22);
}

.button--secondary:hover {
    background: var(--color-beige);
}

.button--hero-secondary:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.82);
}

.site-footer {
    padding: 2.5rem 0 1.25rem;
    color: rgba(250, 248, 243, 0.88);
    background: var(--color-navy-dark);
}

.site-footer__inner {
    display: grid;
    gap: 1.75rem;
}

.site-footer__grid {
    display: grid;
    gap: 1.75rem;
}

.site-footer__column {
    min-width: 0;
    justify-self: stretch;
    text-align: left;
}

.site-footer__column-title {
    margin: 0 0 0.9rem;
    color: var(--color-gold-light);
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.site-footer__links {
    display: grid;
    gap: 0.65rem;
}

.site-footer__links li {
    min-width: 0;
}

.site-footer__links a,
.site-footer__contact a,
.site-footer__contact span {
    color: rgba(250, 248, 243, 0.82);
}

.site-footer__contact {
    display: grid;
    gap: 0.7rem;
}

.site-footer__contact-label {
    display: block;
    margin-bottom: 0.15rem;
    color: rgba(250, 248, 243, 0.56);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-footer__contact p,
.site-footer__contact address {
    margin: 0;
    font-style: normal;
    color: rgba(250, 248, 243, 0.82);
}

.site-footer__contact a,
.site-footer__links a {
    text-decoration: underline;
    text-decoration-color: transparent;
    text-underline-offset: 0.18em;
    transition:
        color var(--motion-fast) var(--motion-ease-interaction),
        text-decoration-color var(--motion-fast) var(--motion-ease-interaction);
}

.site-footer__contact a {
    overflow-wrap: anywhere;
}

.site-footer__meta {
    display: grid;
    gap: 0.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.site-footer__meta-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.15rem;
}

.site-footer__meta-links a {
    display: inline-flex;
    align-items: center;
    min-height: 2.25rem;
    font-size: 0.92rem;
}

.site-footer__copyright {
    margin: 0;
    color: rgba(250, 248, 243, 0.66);
}

.site-footer__links a:hover {
    color: var(--color-gold-light);
    text-decoration-color: currentColor;
}

.site-footer__links a:focus-visible,
.site-footer__contact a:focus-visible {
    text-decoration-color: currentColor;
}

@media (max-width: 767px) {
    .site-footer__column + .site-footer__column {
        padding-top: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
}

@media (max-width: 767px) {
    .site-brand {
        gap: 0.7rem;
    }

    .site-brand__mark {
        width: 2.65rem;
    }

    .site-brand__wordmark-primary {
        font-size: 1rem;
        letter-spacing: 0.1em;
    }

    .site-brand__wordmark-secondary {
        font-size: 0.52rem;
        letter-spacing: 0.39em;
    }
}

@media (max-width: 419px) {
    :root {
        --header-height: 4.15rem;
    }

    .site-brand {
        max-width: calc(100% - 5.75rem);
    }
}

@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }

    .site-nav {
        flex: 1;
    }

    .site-nav {
        position: static;
        display: block;
        padding: 0;
        background: transparent;
        border: 0;
    }

    .site-nav__list {
        flex-direction: row;
        align-items: center;
        justify-content: flex-end;
        gap: 1.25rem;
        padding: 0;
        background: transparent;
        border: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .site-nav__list a:not(.button) {
        min-height: 2.75rem;
    }

}

@media (min-width: 768px) {
    .site-footer__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        column-gap: 2.5rem;
    }

    .site-footer__column:last-child {
        grid-column: 1 / -1;
    }

    .site-footer__contact {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        column-gap: 2rem;
    }

    .site-footer__meta {
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: center;
    }

    .site-footer__meta-links {
        justify-content: flex-end;
    }
}

@media (min-width: 1024px) {
    .site-footer__grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        column-gap: clamp(3rem, 5vw, 6rem);
    }

    .site-footer__column:last-child {
        grid-column: auto;
    }

    .site-footer__contact {
        grid-template-columns: 1fr;
    }
}

/* Language choices stay compact in the header and expand inside the mobile nav. */
.language-menu {
    position: relative;
}

.language-menu__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.55rem;
    width: 100%;
    min-height: 2.5rem;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--color-text-dark);
    font: inherit;
    font-weight: 500;
    letter-spacing: 0.01em;
    cursor: pointer;
}

.language-menu__toggle:hover {
    color: var(--color-navy);
}

.language-menu__chevron {
    width: 0.48rem;
    height: 0.48rem;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: translateY(-0.12rem) rotate(45deg);
    transition: transform var(--motion-fast) var(--motion-ease-interaction);
}

.language-menu.is-open .language-menu__chevron {
    transform: translateY(0.12rem) rotate(225deg);
}

.language-menu__dropdown {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.35rem;
    list-style: none;
    max-height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition:
        max-height var(--motion-fast) var(--motion-ease-interaction),
        margin var(--motion-fast) var(--motion-ease-interaction),
        opacity var(--motion-fast) var(--motion-ease-interaction);
}

.language-menu.is-open .language-menu__dropdown {
    max-height: 4rem;
    margin-top: 0.35rem;
    opacity: 1;
    visibility: visible;
}

.language-menu__dropdown a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.45rem 0.65rem;
    border-radius: var(--radius-pill);
    color: var(--color-text-dark);
    font-size: 0.875rem;
}

.language-menu__dropdown a:hover {
    background: rgba(255, 255, 255, 0.72);
}

.language-menu__dropdown a[aria-current="page"] {
    background: rgba(24, 54, 93, 0.1);
    color: var(--color-navy-dark);
    font-weight: 700;
}

@media (min-width: 1024px) {
    .site-nav {
        display: block;
    }

    .site-nav__list { flex-wrap: nowrap; }
    .site-nav__list a { white-space: nowrap; }

    .language-menu__toggle {
        justify-content: center;
        width: auto;
        min-height: 2.75rem;
    }

    .language-menu__dropdown {
        position: absolute;
        top: 100%;
        left: 50%;
        z-index: 2;
        display: grid;
        grid-template-columns: 1fr;
        gap: 0.2rem;
        width: 7.5rem;
        max-height: none;
        margin: 0;
        padding: 0.45rem;
        overflow: visible;
        border: 1px solid rgba(24, 54, 93, 0.12);
        border-radius: 0.8rem;
        background: var(--color-warm-white);
        box-shadow: 0 16px 36px rgba(16, 40, 70, 0.14);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translate(-50%, 0.4rem);
        transition:
            opacity var(--motion-fast) var(--motion-ease-interaction),
            transform var(--motion-fast) var(--motion-ease-interaction),
            visibility var(--motion-fast) var(--motion-ease-interaction);
    }

    .language-menu:hover .language-menu__dropdown,
    .language-menu.is-open .language-menu__dropdown {
        max-height: none;
        margin: 0;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translate(-50%, 0);
    }
}
/* Longer Latin-script headings wrap within the approved layout. */
html:not([lang="zh-Hans"]) .site-main h1 {
    font-size: clamp(2rem, 3.2vw, 3.25rem);
    line-height: 1.2;
    overflow-wrap: break-word;
}
html:not([lang="zh-Hans"]) .button {
    max-width: 100%;
    white-space: normal;
    text-align: center;
}
html:not([lang="zh-Hans"]) .site-main h2,
html:not([lang="zh-Hans"]) .site-main h3 {
    overflow-wrap: break-word;
}

/* Latin scripts use the existing local Latin font fallbacks for natural accents. */
html:not([lang="zh-Hans"]) :is(.site-main, .site-footer, .site-nav, .nav-toggle) {
    --font-body: "Helvetica Neue", Arial, sans-serif;
    --font-display: Georgia, "Times New Roman", serif;
    font-family: var(--font-body);
}
html:not([lang="zh-Hans"]) .home-hero h1 { max-width: 23ch; }

/* Keep the focused step heading below the fixed header after navigation. */
.contact-step__legend { scroll-margin-top: calc(var(--header-height) + 1rem); }