.narrative-stream {
    position: relative;
    border-left: 1px solid var(--line-color);
    padding-left: 48px;
    margin-left: 12px;
}

section.chapter {
    margin-bottom: 160px;
    position: relative;
}

section.chapter::before {
    content: "";
    position: absolute;
    left: -53px;
    top: 1.2rem;
    width: 9px;
    height: 9px;
    background-color: var(--bg-base);
    border: 2px solid var(--accent);
    border-radius: 50%;
    z-index: 10;
}

@media (max-width: 600px) {
    .narrative-stream {
        padding-left: 24px;
        border-left: 1px solid var(--line-color);
    }

    section.chapter::before {
        left: -29px;
    }
}

.story-nav {
    position: fixed;
    top: 50%;
    right: 48px;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 24px;
    z-index: 100;
}

.story-nav::before {
    content: "";
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: 6px;
    width: 1px;
    background: linear-gradient(to bottom,
            transparent,
            var(--line-color) 15%,
            var(--line-color) 85%,
            transparent);
    z-index: -1;
}

.story-dot {
    position: relative;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background-color: var(--bg-base);
    border: 2px solid var(--text-muted);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    opacity: 0.6;
}

.story-dot:hover {
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(129, 140, 248, 0.4);
    transform: scale(1.2);
    opacity: 1;
}

.story-dot::after {
    content: attr(data-title);
    position: absolute;
    top: 50%;
    right: 24px;
    transform: translateY(-50%) translateX(10px);
    background: rgba(15, 23, 42, 0.9);
    color: #F8FAFC;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-family: system-ui, sans-serif;
    letter-spacing: 0.05em;
}

.story-dot:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

@media (max-width: 1100px) {
    .story-nav {
        display: none;
    }
}