.site-header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}

.site-header.is-scrolled,
body.menu-open .site-header {
    border-color: var(--edge);
    background: color-mix(in srgb, var(--background-raised) 84%, transparent);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
}

.site-header-inner {
    display: flex;
    align-items: center;
    min-height: 76px;
    gap: 28px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    color: var(--text);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    text-decoration: none;
}

.brand img {
    border-radius: 50%;
}

.site-navigation {
    display: flex;
    align-items: center;
    gap: 27px;
    margin-left: auto;
}

.site-navigation-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition);
}

.site-navigation-link:hover,
.site-navigation-link:focus-visible {
    color: var(--text);
}

.menu-button {
    display: none;
    width: 42px;
    height: 42px;
    margin-left: auto;
    border: 1px solid var(--edge);
    border-radius: var(--radius-small);
    background: var(--background-raised);
    color: #fff;
    cursor: pointer;
}

.menu-button span {
    display: block;
    width: 17px;
    height: 1px;
    margin: 5px auto;
    background: currentColor;
    transition: transform var(--transition);
}

.menu-button[aria-expanded="true"] span:first-child {
    transform: translateY(3px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:last-child {
    transform: translateY(-3px) rotate(-45deg);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: var(--radius-small);
    font-size: 0.94rem;
    font-weight: 650;
    text-decoration: none;
    transition: transform var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
}

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

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

.button:focus-visible,
a:focus-visible,
summary:focus-visible,
button:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    fill: currentColor;
    flex: 0 0 auto;
}

.button .icon {
    margin-left: 8px;
}

.button-small {
    min-height: 42px;
    padding: 0 18px;
    font-size: 0.86rem;
}

.button-large {
    min-height: 56px;
    padding: 0 26px;
}

.button-primary {
    background: var(--accent);
    color: #fff;
}

.button-primary:hover {
    background: var(--accent-hover);
}

.button-secondary {
    border-color: var(--edge-strong);
    background: rgba(255, 255, 255, 0.04);
    color: #fff;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 25px;
    color: var(--link);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.eyebrow span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 5px var(--accent-soft);
}

.icon-tile {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border: 1px solid color-mix(in srgb, var(--link) 18%, transparent);
    border-radius: var(--radius-small);
    background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent) 8%, transparent));
    color: var(--link);
    font-size: 1.28rem;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.04);
}

.icon-tile-compact {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-small);
    font-size: 1.15rem;
}

.panel {
    border: 1px solid var(--edge);
    border-radius: var(--radius-medium);
    background: var(--panel);
}

.panel-raised {
    background: var(--panel-raised);
}

.content-card {
    padding: 30px;
}

.ambient-glow {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.product-window {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--edge-strong);
    border-radius: var(--radius-large);
    background: var(--panel-raised);
    box-shadow: var(--shadow-preview);
}

.product-window-bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    min-height: 44px;
    padding: 0 14px;
    border-bottom: 1px solid var(--edge);
    color: var(--text-muted);
    font-size: 0.72rem;
}

.product-window-dots {
    display: flex;
    gap: 7px;
}

.product-window-dots span {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.12);
}

.product-window-dots span:nth-child(1) {
    background: #ff5f57;
}

.product-window-dots span:nth-child(2) {
    background: #febc2e;
}

.product-window-dots span:nth-child(3) {
    background: #28c840;
}

.product-shot {
    position: relative;
    overflow: hidden;
    background: var(--background);
}

.product-shot img {
    position: absolute;
    display: block;
    width: auto;
    max-width: none;
    user-select: none;
}

.feature-list {
    display: grid;
    gap: 10px;
    margin: 25px 0 0;
    padding: 0;
    list-style: none;
}

.feature-list li {
    display: grid;
    grid-template-columns: 15px 1fr;
    align-items: start;
    gap: 9px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.feature-list li > .icon {
    margin-top: 0.34em;
    color: var(--link);
    font-size: 0.72em;
}

.product-window-compact {
    max-width: 520px;
}

.callout {
    display: grid;
    grid-template-columns: 46px 1fr;
    gap: 14px;
    margin: 30px 0;
    padding: 18px;
    border: 1px solid var(--edge);
    border-radius: var(--radius-small);
    background: rgba(255, 255, 255, 0.025);
}

.callout p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.callout strong {
    display: block;
    margin-bottom: 2px;
    color: var(--text);
}

.text-link {
    display: inline-flex;
    align-items: center;
    color: var(--link);
    font-size: 0.9rem;
    font-weight: 650;
    text-decoration: none;
}

.text-link .icon {
    margin-left: 8px;
    transition: transform var(--transition);
}

.text-link:hover .icon {
    transform: translateX(3px);
}

.site-footer {
    padding: 80px 0 30px;
    border-top: 1px solid var(--edge);
    background: var(--background);
}

.site-footer-grid {
    display: grid;
    grid-template-columns: 1.8fr repeat(3, 1fr);
    gap: 50px;
}

.site-footer-brand p {
    max-width: 270px;
    margin-top: 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.site-footer-heading {
    margin-bottom: 18px;
    color: var(--text);
    font-size: 0.78rem;
    font-weight: 650;
    letter-spacing: 0;
}

.site-footer-grid > nav a {
    display: block;
    margin: 9px 0;
    color: var(--text-subtle);
    font-size: 0.8rem;
    text-decoration: none;
}

.site-footer-grid a:hover {
    color: var(--text);
}

.site-footer-bottom {
    display: flex;
    justify-content: space-between;
    margin-top: 70px;
    padding-top: 24px;
    border-top: 1px solid var(--edge);
    color: var(--text-subtle);
    font-size: 0.75rem;
}

@media (max-width: 1080px) {
    .site-navigation {
        gap: 18px;
    }

    .site-navigation-link {
        font-size: 0.82rem;
    }
}

@media (max-width: 900px) {
    body.menu-open .site-header {
        bottom: 0;
        border-color: transparent;
    }

    .menu-button {
        display: block;
    }

    .site-navigation {
        position: absolute;
        top: 76px;
        right: 0;
        bottom: 0;
        left: 0;
        display: none;
        align-items: stretch;
        flex-direction: column;
        gap: 0;
        padding: 22px 24px;
        overflow-y: auto;
        border-top: 1px solid var(--edge);
    }

    .site-navigation.is-open {
        display: flex;
    }

    .site-navigation-link {
        padding: 18px 4px;
        border-bottom: 1px solid var(--edge);
        color: var(--text);
        font-size: 1.125rem;
        font-weight: 600;
    }

    .site-navigation .site-navigation-action {
        width: 100%;
        min-height: 48px;
        margin-top: 24px;
        font-size: 0.94rem;
    }

    .product-window-compact {
        max-width: none;
    }
}

@media (max-width: 640px) {
    .content-card {
        padding: 25px;
    }

    .site-header-inner {
        min-height: 68px;
    }

    .site-navigation {
        top: 68px;
    }

    .site-footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 25px;
    }

    .site-footer-brand {
        grid-column: span 2;
    }

    .site-footer-bottom {
        align-items: flex-start;
        flex-direction: column;
        gap: 7px;
    }
}