body {
    --accent: #5ad98c;
    --accent-light: #7ff0a8;
    --accent-dark: #3da86a;
    --accent-muted: rgba(90, 217, 140, 0.1);
    --accent-glow: rgba(90, 217, 140, 0.2);
    --accent-soft: rgba(90, 217, 140, 0.05);
}

/* Distinct navbar for RSI */
.navbar {
    border-bottom: 1px solid var(--border);
    background: rgba(6, 12, 8, 0.92);
    backdrop-filter: blur(12px);
    height: 60px;
}

.navbar.scrolled {
    background: rgba(6, 12, 8, 0.98);
    border-bottom: 1px solid var(--accent);
}

.logo a {
    gap: 0.5rem;
}

.logo span {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* Nav links — dot prefix */
.nav-link {
    color: var(--text-tertiary);
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    transition: color var(--transition);
    position: relative;
}

.nav-link::before {
    content: '○';
    color: var(--text-faint);
    margin-right: 0.3rem;
    font-size: 0.6rem;
    transition: color var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::before {
    color: var(--accent);
}

.nav-link.active {
    color: var(--accent);
}

.nav-link.active::before {
    content: '●';
    color: var(--accent);
}

/* Search — green glow */
.search-input {
    width: 180px;
    background: rgba(90, 217, 140, 0.04);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 0.4rem 0.6rem;
    padding-right: 1.5rem;
    transition: border-color var(--transition), width var(--transition), box-shadow var(--transition);
}

.search-input::placeholder {
    color: var(--text-faint);
    font-family: var(--font-mono);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    width: 220px;
    box-shadow: 0 0 0 2px rgba(90, 217, 140, 0.1);
}

.search-hint {
    color: var(--text-faint);
    font-family: var(--font-mono);
}

/* RSI page header — recursive style */
.page-header {
    padding: 9rem var(--space-xl) var(--space-2xl);
    border-bottom: 1px solid var(--border);
    position: relative;
}

.page-header::before {
    content: '⟳';
    position: absolute;
    top: var(--space-lg);
    right: var(--space-xl);
    font-size: 5rem;
    color: var(--accent);
    opacity: 0.06;
    line-height: 1;
    pointer-events: none;
    animation: rotate-slow 20s linear infinite;
}

.rsi-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--accent-muted);
    border-radius: 100px;
    background: var(--accent-soft);
    margin-bottom: var(--space-md);
}

.rsi-badge-icon {
    font-size: 1rem;
    color: var(--accent);
    animation: rotate-slow 20s linear infinite;
}

.rsi-badge-text {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.page-header h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.page-header h1::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin-top: var(--space-md);
    border-radius: 2px;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-top: var(--space-md);
    max-width: 600px;
}

.header-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-top: var(--space-md);
    max-width: 600px;
}

.rsi-intro {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    align-items: start;
}

.rsi-intro-text h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.rsi-intro-text p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

.rsi-augmentation-ladder {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-lg);
    background: rgba(90, 217, 140, 0.03);
}

.rsi-ladder-title {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.rsi-ladder-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.rsi-ladder-item:last-of-type { border-bottom: none; }

.rsi-ladder-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--accent-muted);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.rsi-ladder-top {
    color: var(--text-primary);
    font-weight: 600;
}

.rsi-ladder-top .rsi-ladder-icon {
    background: var(--accent);
    color: var(--bg-primary);
}

.rsi-ladder-note {
    margin-top: var(--space-md);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

.rsi-list {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border);
}

.rsi-item {
    display: flex;
    gap: 1.25rem;
    padding: 1.5rem 0;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
}

.rsi-item:hover { padding-left: 0.75rem; }

.rsi-item-number {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    flex-shrink: 0;
}

.rsi-item-content { flex-grow: 1; min-width: 0; }

.rsi-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.35rem;
}

.rsi-item-date { font-size: 0.75rem; color: var(--text-tertiary); }

.rsi-item-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    transition: color 0.15s ease;
}

.rsi-item:hover .rsi-item-title { color: var(--accent); }

.rsi-item-excerpt {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rsi-item-tags {
    display: flex;
    gap: 0.3rem;
    margin-top: 0.5rem;
}

.rsi-item-tag {
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 0.6875rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

.rsi-empty {
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-tertiary);
}

.rsi-empty-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    opacity: 0.2;
}

@media (max-width: 900px) {
    .rsi-intro {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* RSI footer */
footer {
    border-top: 1px solid var(--border);
    padding: var(--space-xl);
    background: rgba(6, 12, 8, 0.6);
}

.footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
}

.footer-rsi {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-rsi-icon {
    font-size: 1rem;
    color: var(--accent);
    animation: rotate-slow 20s linear infinite;
}

.footer-rsi span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-links a {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
    width: 100%;
}

.footer-bottom span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-faint);
}

@media (max-width: 640px) {
    .rsi-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .rsi-item-number {
        width: auto;
        height: auto;
        min-width: 0;
        justify-content: flex-start;
    }
}