.site-guide {
    position: relative;
    z-index: 9999;
    width: min(100% - 32px, 1040px);
    margin: 100vh auto 64px;
    padding: clamp(24px, 5vw, 56px);
    color: #eee8f5;
    background:
        repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 4px),
        radial-gradient(ellipse at 90% 0%, rgba(34, 211, 238, 0.1), transparent 38%),
        linear-gradient(145deg, #090d1c 0%, #151025 52%, #08151e 100%);
    border: 1px solid rgba(103, 232, 249, 0.48);
    box-shadow:
        0 0 0 1px rgba(139, 92, 246, 0.22),
        0 0 42px rgba(76, 29, 149, 0.32),
        inset 0 0 36px rgba(34, 211, 238, 0.035);
    font-family: "Segoe UI", Arial, sans-serif;
    line-height: 1.7;
    user-select: text;
    -webkit-user-drag: auto;
}

.site-guide__intro {
    max-width: 760px;
    margin-bottom: 28px;
}

.site-guide__eyebrow {
    color: #67e8f9;
    font: 600 0.8rem "Courier New", monospace;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.site-guide h1,
.site-guide h2,
.site-guide h3 {
    color: #fff;
    line-height: 1.25;
    text-shadow: 0 0 18px rgba(139, 92, 246, 0.2);
}

.site-guide h1 {
    margin: 8px 0 16px;
    font-size: clamp(2rem, 5vw, 3.25rem);
}

.site-guide h2 {
    margin: 0 0 14px;
    font-size: clamp(1.35rem, 3vw, 1.9rem);
}

.site-guide h3 {
    margin: 0 0 8px;
    font-size: 1.12rem;
}

.site-guide p + p,
.site-guide p + ul {
    margin-top: 12px;
}

.site-guide__nav,
.site-guide__links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
}

.site-guide__nav {
    margin: 0 0 36px;
    padding: 16px;
    border: 1px solid rgba(139, 92, 246, 0.42);
    background: rgba(5, 8, 21, 0.82);
    box-shadow: inset 0 0 18px rgba(139, 92, 246, 0.08);
}

.site-guide a {
    color: #c4b5fd;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

.site-guide a:hover,
.site-guide a:focus-visible {
    color: #67e8f9;
}

.site-guide__section {
    margin: 0 0 34px;
    scroll-margin-top: 20px;
}

.site-guide__card {
    margin: 14px 0;
    padding: 18px;
    border: 1px solid rgba(139, 92, 246, 0.22);
    border-left: 3px solid #a78bfa;
    background: rgba(8, 11, 28, 0.82);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
}

.site-guide__section#learning {
    padding: clamp(18px, 3vw, 28px);
    border: 1px solid rgba(34, 211, 238, 0.32);
    border-left: 3px solid #22d3ee;
    background: linear-gradient(135deg, rgba(9, 18, 35, 0.96), rgba(25, 13, 42, 0.96));
    box-shadow: inset 0 0 28px rgba(34, 211, 238, 0.045), 0 0 24px rgba(139, 92, 246, 0.12);
}

.site-guide__section#learning h2 {
    color: #e9d5ff;
}

.site-guide__links {
    padding-left: 20px;
}

.site-guide details {
    padding: 14px 0;
    border-top: 1px solid rgba(103, 116, 154, 0.35);
}

.site-guide summary {
    color: #e9d5ff;
    cursor: pointer;
    font-weight: 600;
}

.site-guide details p {
    margin-top: 8px;
}

@media (min-width: 900px) {
    .site-guide {
        width: min(100% - 48px, 1160px);
    }

    .site-guide__section {
        padding: 22px 24px;
        border: 1px solid rgba(103, 116, 154, 0.25);
        background: rgba(8, 11, 28, 0.38);
    }

    .site-guide__section#astrology-tools {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0 18px;
    }

    .site-guide__section#astrology-tools > h2,
    .site-guide__section#astrology-tools > p {
        grid-column: 1 / -1;
    }

    .site-guide__card {
        height: 100%;
    }
}

@media (max-width: 768px) {
    .site-guide {
        width: 100%;
        margin-top: 0;
        padding: 24px 18px;
    }
}