.timeline-view {
    min-height: 100vh;
    background: var(--bg);
}

.timeline-view .nav-links a[aria-current='page'] {
    color: var(--text);
}

.timeline-view .nav-links a[aria-current='page']::after {
    transform: scaleX(1);
}

.timeline-main {
    padding-top: var(--header-height);
}

.timeline-hero {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr) 240px;
    gap: 36px;
    align-items: end;
    min-height: 440px;
    padding-top: 92px;
    padding-bottom: 82px;
}

.timeline-hero-index {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-bottom: 12px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 10px;
    line-height: 1.4;
}

.timeline-hero-copy .eyebrow {
    margin-bottom: 24px;
}

.timeline-hero-copy h1 {
    margin: 0;
    font-size: 82px;
    font-weight: 600;
    line-height: 1.05;
    text-wrap: balance;
}

.timeline-hero-copy > p:last-child {
    max-width: 660px;
    margin: 30px 0 0;
    color: var(--text-soft);
    font-size: 21px;
    line-height: 1.8;
    text-wrap: pretty;
}

.timeline-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin: 0;
    padding-top: 18px;
    border-top: 1px solid var(--line-strong);
}

.timeline-stats div {
    min-width: 0;
}

.timeline-stats dt {
    margin-bottom: 9px;
    color: var(--text-muted);
    font-size: 13px;
}

.timeline-stats dd {
    margin: 0;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 20px;
    line-height: 1;
}

.timeline-content {
    padding-bottom: 124px;
}

.timeline-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    min-height: 74px;
    border-top: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line);
}

.timeline-filter,
.timeline-years {
    display: flex;
    align-items: center;
    gap: 28px;
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.timeline-filter::-webkit-scrollbar,
.timeline-years::-webkit-scrollbar {
    display: none;
}

.timeline-filter-button,
.timeline-years button {
    position: relative;
    flex: 0 0 auto;
    min-height: 44px;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 180ms ease;
}

.timeline-filter-button {
    font-family: var(--font-main);
    font-size: 15px;
}

.timeline-filter-button::after {
    content: '';
    position: absolute;
    inset: auto 0 6px;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform 200ms var(--ease);
}

.timeline-filter-button:hover,
.timeline-filter-button[aria-pressed='true'],
.timeline-years button:hover {
    color: var(--text);
}

.timeline-filter-button[aria-pressed='true']::after {
    transform: scaleX(1);
}

.timeline-years {
    justify-content: flex-end;
    gap: 18px;
}

.timeline-years button {
    font-family: var(--font-mono);
    font-size: 11px;
}

.timeline-years button::before {
    content: '/';
    margin-right: 5px;
    color: var(--accent);
}

.timeline-list {
    min-height: 300px;
}

.timeline-track {
    --axis-x: 48px;
    --event-offset: 152px;
    position: relative;
    min-height: 320px;
    padding: 54px 0 76px;
}

.timeline-axis {
    position: absolute;
    z-index: 1;
    top: 54px;
    bottom: 76px;
    left: var(--axis-x);
    width: 1px;
    background: var(--line-strong);
}

.timeline-axis::before,
.timeline-axis::after {
    content: '';
    position: absolute;
    left: 50%;
    width: 5px;
    height: 5px;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    background: var(--bg);
    transform: translateX(-50%);
}

.timeline-axis::before {
    top: -2px;
}

.timeline-axis::after {
    bottom: -2px;
}

.timeline-axis-progress {
    position: absolute;
    top: 0;
    left: -1px;
    width: 3px;
    height: 0;
    max-height: 100%;
    background: var(--accent);
    box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 32%, transparent);
    transition: height 180ms linear, background-color 180ms ease;
}

.timeline-axis-head {
    position: absolute;
    right: 50%;
    bottom: -5px;
    width: 11px;
    height: 11px;
    border: 2px solid var(--bg);
    border-radius: 50%;
    background: var(--accent-strong);
    box-shadow:
        0 0 0 1px var(--accent),
        0 0 20px color-mix(in srgb, var(--accent) 55%, transparent);
    transform: translateX(50%);
}

.timeline-track.is-empty .timeline-axis {
    display: none;
}

.timeline-year-group {
    position: relative;
    scroll-margin-top: 104px;
}

.timeline-year-group + .timeline-year-group {
    margin-top: 42px;
}

.timeline-year-heading {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: baseline;
    gap: 18px;
    min-height: 56px;
    margin-left: var(--event-offset);
}

.timeline-year-heading h2 {
    margin: 0;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 38px;
    font-weight: 400;
    line-height: 1;
    transition: color 260ms ease;
}

.timeline-year-heading span {
    color: var(--text-muted);
    font-size: 13px;
}

.timeline-year-marker {
    position: absolute;
    top: 11px;
    left: calc((var(--event-offset) - var(--axis-x)) * -1 - 6px);
    width: 13px;
    height: 13px;
    border: 1px solid var(--line-strong);
    background: var(--bg);
    transform: rotate(45deg);
    transition: border-color 260ms ease, background-color 260ms ease, transform 320ms var(--ease);
}

.timeline-year-heading.is-passed h2 {
    color: var(--accent);
}

.timeline-year-heading.is-passed .timeline-year-marker {
    border-color: var(--accent);
    background: var(--accent);
    transform: rotate(135deg);
}

.timeline-year-events {
    min-width: 0;
}

.timeline-event {
    position: relative;
    min-width: 0;
    min-height: 188px;
    scroll-margin-top: 104px;
}

.timeline-event-marker {
    position: absolute;
    z-index: 3;
    top: 48px;
    left: calc(var(--axis-x) - 6px);
    width: 13px;
    height: 13px;
    border: 2px solid var(--bg);
    border-radius: 50%;
    background: var(--bg);
    box-shadow: 0 0 0 1px var(--line-strong);
    transition:
        width 300ms var(--ease),
        height 300ms var(--ease),
        left 300ms var(--ease),
        top 300ms var(--ease),
        transform 300ms var(--ease),
        background-color 220ms ease,
        box-shadow 300ms ease;
}

.timeline-event::before {
    content: '';
    position: absolute;
    top: 54px;
    left: calc(var(--axis-x) + 10px);
    width: calc(var(--event-offset) - var(--axis-x) - 28px);
    height: 1px;
    background: var(--line);
    transform: scaleX(0.32);
    transform-origin: left;
    transition: background-color 260ms ease, transform 480ms var(--ease);
}

.timeline-event-body {
    min-width: 0;
    margin-left: var(--event-offset);
    padding: 36px 0 54px;
    opacity: 0.62;
    transition: opacity 300ms ease, transform 420ms var(--ease);
}

.timeline-event-heading-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.timeline-event-date {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.4;
}

.timeline-event-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 0;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 10px;
    line-height: 1.4;
}

.timeline-event-meta span + span::before {
    content: '/';
    margin-right: 14px;
    color: var(--text-muted);
}

.timeline-event-body h3 {
    max-width: 760px;
    margin: 0;
    font-size: 29px;
    font-weight: 600;
    line-height: 1.35;
    text-wrap: pretty;
}

.timeline-event.is-passed .timeline-event-marker {
    background: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.timeline-event.is-passed::before {
    background: color-mix(in srgb, var(--accent) 50%, var(--line));
    transform: scaleX(1);
}

.timeline-event.is-passed .timeline-event-body {
    opacity: 0.86;
}

.timeline-event.is-current .timeline-event-marker {
    top: 43px;
    left: calc(var(--axis-x) - 11px);
    width: 23px;
    height: 23px;
    background: var(--accent-strong);
    box-shadow:
        0 0 0 1px var(--accent),
        0 0 0 8px color-mix(in srgb, var(--accent) 12%, transparent),
        0 0 28px color-mix(in srgb, var(--accent) 42%, transparent);
}

.timeline-event.is-current .timeline-event-body {
    opacity: 1;
    transform: translateX(8px);
}

.timeline-event.is-current::before {
    background: var(--accent);
}

.timeline-event-body > p {
    max-width: 760px;
    margin: 16px 0 0;
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.8;
    text-wrap: pretty;
}

.timeline-event-details {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    margin: 20px 0 0;
    padding: 0;
    color: var(--text-soft);
    font-size: 14px;
    list-style: none;
}

.timeline-event-details li::before {
    content: '—';
    margin-right: 8px;
    color: var(--accent);
}

.timeline-event-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    margin-top: 18px;
    color: var(--text-soft);
    font-size: 14px;
    transition: color 180ms ease;
}

.timeline-event-link:hover,
.timeline-event-link:focus-visible {
    color: var(--accent);
}

.timeline-event-link svg {
    width: 16px;
    height: 16px;
    transition: transform 220ms var(--ease);
}

.timeline-event-link:hover svg {
    transform: translate(2px, -2px);
}

.timeline-empty {
    min-height: 320px;
    margin: 0;
    padding-top: 110px;
    border-bottom: 1px solid var(--line);
    color: var(--text-muted);
    text-align: center;
}

@media (max-width: 980px) {
    .timeline-hero {
        grid-template-columns: 130px minmax(0, 1fr);
    }

    .timeline-stats {
        grid-column: 2;
        max-width: 300px;
    }

    .timeline-track {
        --axis-x: 34px;
        --event-offset: 118px;
    }
}

@media (max-width: 760px) {
    .timeline-hero {
        display: block;
        min-height: 0;
        padding-top: 78px;
        padding-bottom: 64px;
    }

    .timeline-hero-index {
        margin-bottom: 34px;
        padding: 0;
    }

    .timeline-hero-copy h1 {
        font-size: 58px;
    }

    .timeline-hero-copy > p:last-child {
        margin-top: 22px;
        font-size: 18px;
    }

    .timeline-stats {
        max-width: none;
        margin-top: 44px;
    }

    .timeline-content {
        padding-bottom: 86px;
    }

    .timeline-tools {
        align-items: flex-start;
        flex-direction: column;
        gap: 0;
        padding: 10px 0;
    }

    .timeline-filter,
    .timeline-years {
        width: 100%;
        min-height: 48px;
    }

    .timeline-years {
        justify-content: flex-start;
        border-top: 1px solid var(--line);
    }

    .timeline-track {
        --axis-x: 12px;
        --event-offset: 54px;
        padding-top: 44px;
        padding-bottom: 52px;
    }

    .timeline-year-heading {
        justify-content: space-between;
        min-height: 50px;
        margin-left: var(--event-offset);
    }

    .timeline-year-heading h2 {
        font-size: 29px;
    }

    .timeline-axis {
        top: 44px;
        bottom: 52px;
    }

    .timeline-year-marker {
        top: 8px;
    }

    .timeline-event {
        min-height: 180px;
    }

    .timeline-event-marker {
        top: 42px;
    }

    .timeline-event-body {
        padding: 30px 0 44px;
    }

    .timeline-event-body h3 {
        font-size: 23px;
    }

    .timeline-event::before {
        top: 48px;
        width: calc(var(--event-offset) - var(--axis-x) - 20px);
    }

    .timeline-event.is-current .timeline-event-marker {
        top: 37px;
    }

    .timeline-event.is-current .timeline-event-body {
        transform: translateX(3px);
    }
}

@media (max-width: 440px) {
    .timeline-hero-copy h1 {
        font-size: 48px;
    }

    .timeline-event-details {
        display: block;
    }

    .timeline-event-details li + li {
        margin-top: 7px;
    }
}

@media (prefers-reduced-motion: no-preference) {
    .timeline-event.reveal {
        transition-delay: calc(var(--event-order, 0) * 45ms);
    }
}

@media (prefers-reduced-motion: reduce) {
    .timeline-axis-progress {
        transition: none;
    }

    .timeline-event.is-current .timeline-event-marker {
        box-shadow: 0 0 0 1px var(--accent);
    }
}