:root {
    --site-bg: #fafaf7;
    --site-text: #1a1a1a;
    --site-muted: #74746e;
    --site-faint: #d4d4ce;
    --site-focus: #315f4b;
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 12px;
    z-index: 1000;
    padding: 10px 14px;
    background: var(--site-text);
    color: var(--site-bg);
    text-decoration: none;
    transform: translateY(-140%);
    transition: transform 180ms ease-out;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 250, 247, 0.96);
    border-bottom: 1px solid transparent;
}

@supports (backdrop-filter: blur(10px)) {
    .site-header {
        background: rgba(250, 250, 247, 0.88);
        backdrop-filter: blur(10px);
    }
}

.site-header__inner {
    max-width: 720px;
    min-height: 64px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-brand,
.site-nav a {
    color: var(--site-muted);
    text-decoration: none;
    transition: color 180ms ease-out;
}

.site-brand {
    flex-shrink: 0;
    color: var(--site-text);
    font-family: 'Noto Serif SC', serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 12px;
}

.site-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--site-text); }

.site-nav a[aria-current="page"]::after {
    content: '';
    position: absolute;
    right: 0;
    bottom: 8px;
    left: 0;
    height: 1px;
    background: var(--site-text);
}

.site-brand:focus-visible,
.site-nav a:focus-visible,
.resume-action:focus-visible {
    outline: 2px solid var(--site-focus);
    outline-offset: 4px;
}

@media (min-width: 641px) {
    .site-header__inner { padding: 0 32px; }
}

@media (max-width: 420px) {
    .site-header__inner { gap: 14px; }
    .site-nav { gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
    .skip-link,
    .site-brand,
    .site-nav a { transition: none; }
}