.site-nav {
    position: fixed;
    z-index: 9998;
    top: 14px;
    left: 50%;
    display: flex;
    width: min(92vw, 1160px);
    height: 62px;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin: 0;
    padding: 0 18px;
    border: 0;
    border-radius: 28px;
    background:
        radial-gradient(ellipse at 50% 48%,
            rgba(255, 255, 255, 0.055) 0%,
            rgba(255, 255, 255, 0.028) 48%,
            rgba(255, 255, 255, 0.085) 82%,
            rgba(255, 255, 255, 0.012) 100%);
    box-shadow:
        0 22px 36px rgba(31, 91, 145, 0.18),
        0 5px 16px rgba(255, 255, 255, 0.18),
        inset 0 1px 2px rgba(255, 255, 255, 0.34),
        inset 0 -2px 5px rgba(28, 93, 153, 0.13);
    backdrop-filter: blur(1.5px) saturate(145%) brightness(1.04);
    -webkit-backdrop-filter: blur(1.5px) saturate(145%) brightness(1.04);
    isolation: isolate;
    overflow: hidden;
    transform: translateX(-50%);
}

.site-nav::before,
.site-nav::after {
    position: absolute;
    inset: -12px;
    border-radius: inherit;
    content: "";
    pointer-events: none;
}

.site-nav::before {
    padding: 12px;
    background:
        radial-gradient(ellipse at center,
            transparent 0 62%,
            rgba(255, 255, 255, 0.04) 68%,
            rgba(255, 255, 255, 0.22) 77%,
            rgba(255, 255, 255, 0.46) 84%,
            rgba(255, 255, 255, 0.08) 91%,
            transparent 100%),
        conic-gradient(from 215deg at 50% 50%,
            rgba(255, 255, 255, 0.05),
            rgba(255, 255, 255, 0.62),
            rgba(154, 220, 255, 0.30),
            rgba(255, 255, 255, 0.04),
            rgba(255, 255, 255, 0.48),
            rgba(255, 255, 255, 0.05));
    filter: blur(5px) saturate(130%);
    opacity: 0.66;
}

.site-nav::after {
    inset: -4px;
    background:
        radial-gradient(ellipse at center,
            transparent 0 66%,
            rgba(255, 255, 255, 0.02) 69%,
            rgba(255, 255, 255, 0.16) 73%,
            rgba(126, 211, 252, 0.26) 78%,
            rgba(255, 255, 255, 0.34) 82%,
            transparent 91%),
        linear-gradient(112deg,
            transparent 0 14%,
            rgba(255, 255, 255, 0.50) 19%,
            rgba(136, 220, 255, 0.24) 23%,
            transparent 29% 100%);
    filter: blur(3px) saturate(160%);
    mix-blend-mode: screen;
    opacity: 0.68;
    transform: translateX(-34%) rotate(-3deg);
}

.site-nav-brand,
.site-nav-links,
.site-nav-toggle {
    position: relative;
    z-index: 1;
}

.site-nav-brand {
    flex: 0 0 auto;
    color: rgba(255, 255, 255, 0.96);
    font-family: "SF Pro Display", "SF Pro Text", "SFUIText", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 0.89rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
}

.site-nav-links {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav-link {
    display: inline-flex;
    min-height: 36px;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.03);
    font-family: "SF Pro Display", "SF Pro Text", "SFUIText", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1;
    text-decoration: none;
    text-shadow: none;
    transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
}

.site-nav-link:hover,
.site-nav-link:focus-visible,
.site-nav-link[aria-current="page"] {
    border-color: rgba(255, 255, 255, 0.24);
    color: #fff;
    background: rgba(255, 255, 255, 0.13);
}

.site-nav-link:focus-visible,
.site-nav-brand:focus-visible,
.site-nav-toggle:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.88);
    outline-offset: 3px;
}

.site-nav-toggle {
    display: none;
}

@media (max-width: 768px) {
    .site-nav {
        height: 58px;
        min-height: 58px;
        width: min(94vw, 1100px);
        padding: 0 14px;
        border-radius: 22px;
        overflow: visible;
    }

    .site-nav-brand {
        display: inline-flex;
        min-height: 58px;
        align-items: center;
    }

    .site-nav-toggle {
        display: inline-flex;
        min-width: 40px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
        margin-left: auto;
        padding: 0 12px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 13px;
        color: #fff;
        background: rgba(255, 255, 255, 0.1);
        font: inherit;
        font-size: 0.78rem;
        cursor: pointer;
    }

    .site-nav > nav {
        position: absolute;
        top: calc(100% + 8px);
        right: 0;
        left: 0;
        display: none;
        z-index: 2;
        width: 100%;
        box-sizing: border-box;
        padding: 8px;
        border: 1px solid rgba(255, 255, 255, 0.7);
        border-radius: 20px;
        background: rgba(225, 238, 250, 0.92);
        box-shadow: 0 16px 36px rgba(31, 68, 112, 0.2);
        backdrop-filter: blur(18px) saturate(140%);
        -webkit-backdrop-filter: blur(18px) saturate(140%);
    }

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

    .site-nav-links {
        display: grid;
        gap: 4px;
        width: 100%;
    }

    .site-nav-link {
        display: flex;
        min-height: 40px;
        justify-content: flex-start;
        padding: 0 14px;
        border-radius: 12px;
    }

    .site-nav.is-open .site-nav-link {
        border-color: rgba(71, 125, 244, 0.1);
        color: #34445c;
        background: rgba(255, 255, 255, 0.42);
    }

    .site-nav.is-open .site-nav-link:hover,
    .site-nav.is-open .site-nav-link:focus-visible,
    .site-nav.is-open .site-nav-link[aria-current="page"] {
        border-color: rgba(71, 125, 244, 0.24);
        color: #244fa8;
        background: rgba(255, 255, 255, 0.76);
    }
}