body {
    font-family: 'Inter', sans-serif;
    background-color: var(--rt-bg);
    color: var(--rt-text);
    cursor: default;
}

/* ---------- Hero ---------- */
.arc-eyebrow {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--rt-faint);
}
.arc-title {
    margin-top: 14px;
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    font-size: clamp(34px, 6vw, 56px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.05;
    color: var(--rt-text);
}
.arc-title .arc-i {
    font-style: italic;
    color: var(--lt-accent);
}
.arc-sub {
    margin-top: 18px;
    font-size: 16px;
    font-weight: 400;
    color: var(--rt-muted);
}
.arc-sub .arc-em {
    font-style: normal;
    color: var(--lt-accent);
    font-variant-numeric: tabular-nums;
}
.arc-rule {
    margin-top: 42px;
    height: 1px;
    background: var(--rt-line);
}

/* ---------- Index ---------- */
.arc-index { margin-top: 8px; }
.arc-item { border-bottom: 1px solid var(--rt-line); }
.arc-item:last-child { border-bottom: 0; }

.arc-link {
    display: grid;
    grid-template-columns: 108px 1fr;
    gap: 28px;
    padding: 26px 0;
    text-decoration: none;
    align-items: baseline;
}
.arc-date {
    padding-top: 5px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--rt-faint);
}
.arc-body { min-width: 0; }

.arc-item-title {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.3;
    color: var(--rt-text);
    transition: color 0.2s ease, transform 0.2s ease;
}
.arc-link:hover .arc-item-title {
    color: var(--lt-accent);
    transform: translateX(3px);
}
.arc-item-desc {
    margin-top: 8px;
    font-size: 15px;
    font-weight: 400;
    line-height: 1.7;
    color: var(--rt-muted);
}
.arc-tags {
    margin-top: 12px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--rt-faint);
}
.arc-featured {
    color: var(--lt-accent);
    font-weight: 700;
}

.rt-focus:focus-visible {
    outline: 2px solid var(--lt-accent);
    outline-offset: 4px;
    border-radius: 6px;
}

@media (max-width: 640px) {
    .arc-link {
        grid-template-columns: 1fr;
        gap: 6px;
        padding: 20px 0;
    }
    .arc-date { padding-top: 0; }
}