.observatory-shell {
    --obs-text: #edf7ff;
    --obs-muted: rgba(221, 239, 255, .66);
    --obs-blue: #78c9f5;
    --obs-cyan: #8bdfff;
    --obs-line: rgba(140, 213, 255, .2);
    --obs-line-strong: rgba(151, 222, 255, .38);
    --obs-surface: rgba(11, 31, 54, .64);
    --obs-surface-deep: rgba(5, 18, 35, .78);
    display: grid;
    gap: 26px;
    min-width: 0;
    color: var(--obs-text);
}

.observatory-back-link,
.observatory-breadcrumbs a {
    color: #79d5ff;
    text-decoration: none;
}

.observatory-back-link:hover,
.observatory-breadcrumbs a:hover {
    color: #c3efff;
}

.observatory-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 18px;
}

.observatory-breadcrumbs a + a {
    color: rgba(203, 229, 248, .64);
    font-size: .9rem;
}

.observatory-intro {
    max-width: 780px;
}

.observatory-intro h1 {
    letter-spacing: -.025em;
}

.observatory-intro p {
    max-width: 720px;
    font-size: 1rem;
    line-height: 1.75;
}

.observatory-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border: 1px solid rgba(130, 211, 255, .28);
    border-radius: 999px;
    background: rgba(45, 117, 171, .13);
    color: #bde8ff;
    font-size: .8rem;
    letter-spacing: .08em;
}

.observatory-card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.observatory-feature-card {
    position: relative;
    isolation: isolate;
    display: block;
    min-width: 0;
    aspect-ratio: 2 / 1;
    overflow: hidden;
    border: 1px solid rgba(137, 211, 255, .28);
    border-radius: 22px;
    background: #06182c;
    box-shadow: 0 20px 50px rgba(0, 0, 0, .22);
    color: var(--obs-text);
    text-decoration: none;
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.observatory-feature-card::before {
    content: "";
    position: absolute;
    z-index: 3;
    inset: 0;
    border: 1px solid rgba(210, 240, 255, .08);
    border-radius: inherit;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
    pointer-events: none;
}

.observatory-feature-art {
    position: absolute;
    z-index: -2;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    transform: scale(1.002);
    transition: transform .45s cubic-bezier(.2, .7, .2, 1), filter .35s ease;
}

.observatory-feature-shade {
    position: absolute;
    z-index: -1;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(1, 10, 23, .38) 0%, rgba(1, 11, 25, .03) 34%, rgba(1, 10, 23, .18) 52%, rgba(1, 9, 21, .94) 100%),
        linear-gradient(90deg, rgba(1, 10, 22, .32), transparent 65%);
    transition: background-color .25s ease;
}

.observatory-feature-card:hover,
.observatory-feature-card:focus-visible {
    transform: translateY(-4px);
    border-color: rgba(165, 226, 255, .58);
    box-shadow: 0 24px 58px rgba(20, 95, 158, .25);
    color: #fff;
}

.observatory-feature-card:focus-visible {
    outline: 3px solid rgba(139, 223, 255, .72);
    outline-offset: 3px;
}

.observatory-feature-card:hover .observatory-feature-art,
.observatory-feature-card:focus-visible .observatory-feature-art {
    filter: saturate(1.08) brightness(1.05);
    transform: scale(1.035);
}

.observatory-feature-head {
    position: absolute;
    z-index: 1;
    top: 19px;
    right: 19px;
    left: 19px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.observatory-feature-head .observatory-card-label,
.observatory-feature-index {
    padding: 6px 10px;
    border: 1px solid rgba(181, 228, 255, .18);
    border-radius: 999px;
    background: rgba(3, 18, 36, .54);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
    backdrop-filter: blur(10px);
}

.observatory-feature-index {
    flex: 0 0 auto;
    color: rgba(224, 244, 255, .72);
    font-size: .76rem;
    letter-spacing: .16em;
}

.observatory-card-label,
.observatory-section-label {
    color: #8ed7fa;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .13em;
    text-transform: uppercase;
}

.observatory-feature-copy {
    position: absolute;
    z-index: 1;
    right: 22px;
    bottom: 21px;
    left: 22px;
}

.observatory-feature-card h2 {
    margin: 0 0 8px;
    color: #f4fbff;
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    font-weight: 700;
    letter-spacing: .02em;
    text-shadow: 0 2px 18px rgba(0, 0, 0, .52);
}

.observatory-feature-card p {
    max-width: 92%;
    margin: 0;
    color: rgba(232, 246, 255, .78);
    font-size: .93rem;
    line-height: 1.58;
    text-shadow: 0 1px 12px rgba(0, 0, 0, .68);
}

.observatory-feature-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-top: 15px;
    padding: 8px 12px;
    border: 1px solid rgba(161, 222, 255, .2);
    border-radius: 999px;
    background: rgba(35, 119, 178, .18);
    color: #b7eaff;
    font-size: .88rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    transition: gap .25s ease, background .25s ease, border-color .25s ease;
}

.observatory-feature-card:hover .observatory-feature-link,
.observatory-feature-card:focus-visible .observatory-feature-link {
    gap: 10px;
    border-color: rgba(181, 231, 255, .34);
    background: rgba(46, 145, 207, .3);
}

.observatory-privacy-note {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 16px 18px;
    border: 1px solid rgba(117, 204, 255, .16);
    border-radius: 16px;
    background: rgba(46, 128, 184, .08);
    color: rgba(225, 244, 255, .78);
}

.observatory-privacy-note strong {
    display: block;
    margin-bottom: 3px;
    color: #eaf8ff;
}

.observatory-privacy-note p {
    line-height: 1.65;
}

.observatory-privacy-icon {
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    width: 35px;
    height: 35px;
    border-radius: 11px;
    background: rgba(84, 174, 225, .12);
    color: #9bdfff;
}

.observatory-stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.observatory-stat {
    min-width: 0;
    padding: 17px 18px;
    border: 1px solid rgba(126, 199, 241, .18);
    border-radius: 16px;
    background: rgba(15, 43, 70, .5);
}

.observatory-stat span {
    display: block;
    margin-bottom: 6px;
    color: rgba(211, 235, 251, .62);
    font-size: .82rem;
}

.observatory-stat strong {
    display: block;
    overflow: hidden;
    color: #f1f9ff;
    font-size: clamp(1.55rem, 3.2vw, 2.15rem);
    font-variant-numeric: tabular-nums;
    text-overflow: ellipsis;
}

.observatory-stat strong + span {
    margin-top: 6px;
    margin-bottom: 0;
}

.observatory-map-section,
.history-story,
.observatory-section {
    min-width: 0;
    padding: clamp(18px, 3vw, 28px);
    border: 1px solid rgba(128, 205, 249, .18);
    border-radius: 20px;
    background: linear-gradient(150deg, rgba(13, 38, 64, .58), rgba(7, 22, 42, .68));
}

.observatory-section-heading {
    display: flex;
    gap: 20px;
    justify-content: space-between;
    align-items: flex-end;
}

.observatory-section-heading h2 {
    margin: 5px 0 0;
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    font-weight: 650;
}

.observatory-map-modes {
    display: inline-flex;
    padding: 4px;
    border: 1px solid rgba(126, 205, 249, .2);
    border-radius: 999px;
    background: rgba(5, 19, 36, .58);
}

.observatory-mode-button {
    min-width: 68px;
    min-height: 36px;
    padding: 6px 14px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: rgba(213, 237, 252, .68);
}

.observatory-mode-button:hover,
.observatory-mode-button:focus-visible,
.observatory-mode-button.is-active {
    background: rgba(78, 163, 218, .24);
    color: #f4fbff;
}

.observatory-map-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: space-between;
    align-items: center;
    margin-top: 22px;
}

.observatory-filter-row,
.observatory-map-toolbar,
.observatory-admin-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.observatory-filter,
.observatory-map-button,
.observatory-action {
    min-height: 40px;
    padding: 7px 13px;
    border: 1px solid rgba(115, 203, 255, .23);
    border-radius: 999px;
    background: rgba(53, 132, 191, .07);
    color: #cceeff;
}

.observatory-filter:hover,
.observatory-filter:focus-visible,
.observatory-map-button:hover,
.observatory-map-button:focus-visible,
.observatory-action:hover,
.observatory-action:focus-visible,
.observatory-filter.is-active {
    border-color: rgba(140, 218, 255, .58);
    background: rgba(65, 164, 226, .18);
    color: #fff;
}

.observatory-status {
    min-height: 1.4em;
    margin: 15px 0 10px;
    color: #9edfff;
    font-size: .86rem;
}

.visitor-map-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 14px;
}

.visitor-map-frame {
    position: relative;
    min-width: 0;
    overflow: hidden;
    border: 1px solid rgba(122, 201, 244, .24);
    border-radius: 20px;
    background:
        radial-gradient(circle at 72% 24%, rgba(35, 111, 160, .18), transparent 36%),
        radial-gradient(circle at 25% 70%, rgba(30, 82, 132, .15), transparent 42%),
        #030d1b;
    box-shadow: inset 0 0 70px rgba(0, 0, 0, .38);
}

.visitor-map-svg {
    display: block;
    width: 100%;
    min-height: 330px;
    aspect-ratio: 1000 / 560;
    touch-action: manipulation;
}

.visitor-map-grid line {
    stroke: rgba(116, 190, 229, .065);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
}

.visitor-map-boundaries path {
    fill: rgba(54, 113, 150, .2);
    fill-rule: evenodd;
    stroke: rgba(133, 202, 235, .48);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
    transition: fill .2s ease, stroke .2s ease;
}

.visitor-map-boundaries.is-china path {
    fill: rgba(50, 118, 158, .24);
    stroke: rgba(143, 213, 244, .52);
}

.visitor-map-boundaries path:hover {
    fill: rgba(72, 150, 192, .34);
    stroke: rgba(175, 231, 255, .72);
}

.visitor-map-boundaries path,
.visitor-map-inset__geometry {
    cursor: help;
}

.visitor-map-inset__frame {
    fill: rgba(4, 19, 35, .82);
    stroke: rgba(130, 207, 247, .3);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
}

.visitor-map-inset__rule {
    stroke: rgba(130, 207, 247, .16);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
}

.visitor-map-inset__label {
    fill: rgba(213, 239, 253, .75);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .08em;
}

.visitor-map-inset__geometry {
    fill: rgba(50, 118, 158, .24);
    fill-rule: evenodd;
    stroke: rgba(143, 213, 244, .58);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
    transition: fill .2s ease, stroke .2s ease;
}

.visitor-map-inset__geometry:hover {
    fill: rgba(72, 150, 192, .36);
    stroke: rgba(190, 237, 255, .82);
}

.visitor-map-tooltip {
    position: absolute;
    z-index: 5;
    max-width: min(240px, calc(100% - 20px));
    padding: 8px 11px 8px 28px;
    border: 1px solid rgba(137, 215, 255, .3);
    border-radius: 10px;
    background: rgba(5, 22, 39, .92);
    box-shadow: 0 10px 28px rgba(0, 0, 0, .32), inset 0 1px rgba(255, 255, 255, .04);
    color: #dff5ff;
    font-size: .78rem;
    font-weight: 600;
    line-height: 1.35;
    pointer-events: none;
    backdrop-filter: blur(12px);
}

.visitor-map-tooltip::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 11px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #75dcff;
    box-shadow: 0 0 0 4px rgba(77, 199, 255, .12), 0 0 12px rgba(77, 199, 255, .55);
    transform: translateY(-50%);
}

.visitor-map-tooltip[hidden] {
    display: none;
}

.visitor-star {
    cursor: pointer;
    outline: none;
    --visitor-star-delay: 0s;
}

.visitor-star__hit-area {
    fill: transparent;
    pointer-events: all;
}

.visitor-star__light {
    filter: url(#visitor-star-soft-glow);
    isolation: isolate;
    pointer-events: none;
    transform-box: fill-box;
    transform-origin: center;
    animation: visitor-star-drift 7.2s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__bloom,
.visitor-star__flare,
.visitor-star__core,
.visitor-star__pinpoint {
    transform-box: fill-box;
    transform-origin: center;
    mix-blend-mode: screen;
}

.visitor-star__bloom {
    fill: url(#visitor-star-bloom);
}

.visitor-star__bloom--ambient {
    opacity: .48;
    animation: visitor-star-ambient 5.6s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__bloom--inner {
    opacity: .82;
    animation: visitor-star-inner 4.3s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__flare {
    fill: url(#visitor-star-flare);
}

.visitor-star__flare--horizontal {
    opacity: .9;
    animation: visitor-star-ray-horizontal 4.9s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__flare--vertical {
    opacity: .82;
    animation: visitor-star-ray-vertical 3.8s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__flare--diagonal-a {
    fill: url(#visitor-star-flare-accent);
    opacity: .48;
    animation: visitor-star-glint-a 6.1s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__flare--diagonal-b {
    fill: url(#visitor-star-flare-accent);
    opacity: .34;
    animation: visitor-star-glint-b 5.3s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__core {
    fill: url(#visitor-star-core);
    stroke: rgba(255, 250, 222, .92);
    stroke-width: .42;
    vector-effect: non-scaling-stroke;
    animation: visitor-star-core 4.1s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star__pinpoint {
    fill: #fffef5;
    opacity: .98;
    animation: visitor-star-pinpoint 2.9s ease-in-out var(--visitor-star-delay) infinite;
}

.visitor-star:hover .visitor-star__light,
.visitor-star:focus .visitor-star__light {
    filter: url(#visitor-star-soft-glow) brightness(1.16);
}

.visitor-star:hover .visitor-star__bloom--ambient,
.visitor-star:focus .visitor-star__bloom--ambient {
    opacity: .55;
}

.visitor-star:hover .visitor-star__flare,
.visitor-star:focus .visitor-star__flare {
    opacity: 1;
}

@keyframes visitor-star-ambient {
    0%, 100% { opacity: .31; transform: scale(.88); }
    43% { opacity: .58; transform: scale(1.08); }
    68% { opacity: .4; transform: scale(.96); }
}

@keyframes visitor-star-inner {
    0%, 100% { opacity: .68; transform: scale(.92); }
    48% { opacity: .96; transform: scale(1.1); }
    72% { opacity: .77; transform: scale(.98); }
}

@keyframes visitor-star-ray-horizontal {
    0%, 100% { opacity: .58; transform: rotate(var(--visitor-star-angle)) scaleX(.76) scaleY(.88); }
    38% { opacity: .98; transform: rotate(var(--visitor-star-angle)) scaleX(1.12) scaleY(1.06); }
    61% { opacity: .72; transform: rotate(var(--visitor-star-angle)) scaleX(.9) scaleY(.94); }
}

@keyframes visitor-star-ray-vertical {
    0%, 100% { opacity: .5; transform: rotate(var(--visitor-star-angle)) scaleX(.72) scaleY(.9); }
    54% { opacity: .94; transform: rotate(var(--visitor-star-angle)) scaleX(1.14) scaleY(1.08); }
    77% { opacity: .65; transform: rotate(var(--visitor-star-angle)) scaleX(.86) scaleY(.96); }
}

@keyframes visitor-star-glint-a {
    0%, 30%, 100% { opacity: .12; transform: rotate(var(--visitor-star-angle)) scaleX(.58) scaleY(.82); }
    56% { opacity: .66; transform: rotate(var(--visitor-star-angle)) scaleX(1.18) scaleY(1.12); }
    72% { opacity: .26; transform: rotate(var(--visitor-star-angle)) scaleX(.74) scaleY(.9); }
}

@keyframes visitor-star-glint-b {
    0%, 44%, 100% { opacity: .08; transform: rotate(var(--visitor-star-angle)) scaleX(.52) scaleY(.78); }
    67% { opacity: .52; transform: rotate(var(--visitor-star-angle)) scaleX(1.14) scaleY(1.08); }
    83% { opacity: .18; transform: rotate(var(--visitor-star-angle)) scaleX(.68) scaleY(.88); }
}

@keyframes visitor-star-core {
    0%, 100% { opacity: .84; transform: scale(.9); }
    52% { opacity: 1; transform: scale(1.13); }
}

@keyframes visitor-star-pinpoint {
    0%, 100% { opacity: .82; transform: scale(.86); }
    46% { opacity: 1; transform: scale(1.22); }
    61% { opacity: .9; transform: scale(.98); }
}

@keyframes visitor-star-drift {
    0%, 100% { transform: rotate(-1.2deg); }
    48% { transform: rotate(1.4deg); }
    74% { transform: rotate(.2deg); }
}

.visitor-map-detail {
    min-height: 100%;
    padding: 20px;
    border: 1px solid rgba(127, 202, 245, .18);
    border-radius: 20px;
    background: rgba(7, 25, 46, .72);
}

.visitor-map-detail h2 {
    margin: 8px 0 10px;
    font-size: 1.25rem;
}

.visitor-map-detail dl {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 9px 12px;
    margin: 18px 0 0;
}

.visitor-map-detail dt {
    color: rgba(211, 234, 251, .62);
    font-weight: 500;
}

.visitor-map-detail dd {
    margin: 0;
    color: #f1fbff;
    text-align: right;
}

.observatory-map-source {
    margin-top: 11px;
    color: rgba(202, 229, 247, .48);
    font-size: .74rem;
    line-height: 1.55;
}

.observatory-map-footnotes {
    display: grid;
    gap: 3px;
    margin-top: 11px;
}

.observatory-map-footnotes .observatory-map-source {
    margin-top: 0;
}

.observatory-map-source a {
    color: rgba(168, 221, 250, .78);
    text-decoration-color: rgba(168, 221, 250, .28);
    text-underline-offset: 3px;
}

.observatory-map-source a:hover,
.observatory-map-source a:focus-visible {
    color: #eefaff;
    text-decoration-color: rgba(238, 250, 255, .72);
}

.observatory-region-access {
    color: rgba(202, 229, 247, .56);
    font-size: .78rem;
    line-height: 1.55;
    text-align: center;
}

.observatory-region-access i {
    margin-right: 4px;
    color: rgba(145, 215, 252, .7);
}

.observatory-region-access a {
    margin-left: 5px;
    color: #a8ddfa;
    text-decoration: none;
}

.observatory-region-access a:hover {
    color: #fff;
    text-decoration: underline;
}

.observatory-region-panel {
    padding: 17px 19px;
    border: 1px solid rgba(128, 203, 245, .16);
    border-radius: 17px;
    background: rgba(12, 36, 59, .42);
}

.observatory-region-panel summary {
    cursor: pointer;
    color: #cdeeff;
    font-weight: 600;
}

.observatory-region-panel[open] summary {
    margin-bottom: 12px;
}

.visitor-region-list {
    display: grid;
    gap: 9px;
    margin-bottom: 0;
    padding-left: 1.35rem;
    color: rgba(222, 240, 252, .76);
}

.visitor-region-list li::marker {
    color: #79dfff;
}

.observatory-empty {
    padding: 16px;
    border: 1px dashed rgba(131, 205, 244, .22);
    border-radius: 14px;
    color: rgba(215, 237, 251, .64);
}

.history-overview {
    display: grid;
    grid-template-columns: minmax(190px, .68fr) minmax(0, 1.32fr);
    overflow: hidden;
    border: 1px solid rgba(132, 207, 249, .2);
    border-radius: 20px;
    background: linear-gradient(145deg, rgba(17, 52, 84, .64), rgba(7, 23, 43, .72));
}

.history-overview-main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 190px;
    padding: 24px;
    border-right: 1px solid rgba(132, 207, 249, .16);
    background: radial-gradient(circle at 20% 0, rgba(106, 203, 255, .15), transparent 55%);
}

.history-overview-main strong {
    margin: 8px 0 0;
    color: #f4fbff;
    font-size: clamp(3rem, 7vw, 5.2rem);
    font-weight: 650;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.history-overview-main > span:last-child {
    margin-top: 9px;
    color: var(--obs-muted);
}

.history-overview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.history-overview-item {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
    padding: 20px;
    border-right: 1px solid rgba(132, 207, 249, .1);
    border-bottom: 1px solid rgba(132, 207, 249, .1);
}

.history-overview-item:nth-child(2n) { border-right: 0; }
.history-overview-item:nth-last-child(-n+2) { border-bottom: 0; }
.history-overview-item span { color: rgba(208, 233, 249, .58); font-size: .8rem; }
.history-overview-item strong { margin-top: 5px; color: #edf8ff; font-size: 1.5rem; font-variant-numeric: tabular-nums; }
.history-overview-item .history-overview-date { font-size: 1.05rem; }

.history-section-heading {
    align-items: flex-start;
}

.history-section-heading p {
    max-width: 720px;
    margin-top: 8px;
    line-height: 1.65;
}

.history-filters {
    margin-top: 20px;
}

.history-timeline {
    position: relative;
    display: grid;
    gap: 18px;
    margin-top: 28px;
}

.history-timeline::before {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 8px;
    left: 139px;
    width: 1px;
    background: linear-gradient(transparent, rgba(112, 204, 249, .42) 5%, rgba(112, 204, 249, .22) 95%, transparent);
}

.history-node {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 42px;
    align-items: start;
}

.history-node[hidden] {
    display: none;
}

.history-node-rail {
    display: grid;
    gap: 4px;
    padding-top: 18px;
    text-align: right;
}

.history-node-rail time {
    color: rgba(205, 232, 249, .58);
    font-size: .78rem;
    font-variant-numeric: tabular-nums;
}

.history-node-rail span {
    color: #a9e3ff;
    font-size: .9rem;
    font-weight: 650;
}

.history-node-card {
    position: relative;
    min-width: 0;
    padding: 19px 20px;
    border: 1px solid rgba(120, 198, 241, .17);
    border-radius: 17px;
    background: rgba(7, 27, 49, .62);
    transition: border-color .2s ease, background .2s ease;
}

.history-node-card::before {
    content: "";
    position: absolute;
    top: 22px;
    left: -23px;
    width: 13px;
    height: 13px;
    border: 3px solid #0c2844;
    border-radius: 50%;
    background: #70d8ff;
    box-shadow: 0 0 0 5px rgba(78, 188, 240, .1);
}

.history-node.is-major .history-node-card {
    border-color: rgba(139, 182, 255, .3);
    background: linear-gradient(145deg, rgba(18, 45, 77, .74), rgba(8, 27, 51, .7));
}

.history-node.is-major .history-node-card::before {
    background: #b5c6ff;
    box-shadow: 0 0 0 6px rgba(129, 151, 255, .13);
}

.history-node-card:hover {
    border-color: rgba(137, 213, 251, .34);
    background: rgba(10, 34, 58, .76);
}

.history-node-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 7px 10px;
    align-items: center;
    color: rgba(207, 232, 249, .6);
    font-size: .78rem;
}

.history-category,
.history-major-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 8px;
    border-radius: 999px;
}

.history-category {
    background: rgba(66, 151, 207, .12);
    color: #9ce1ff;
}

.history-major-badge {
    background: rgba(117, 139, 232, .12);
    color: #bdcaff;
}

.history-node-card h3 {
    margin: 11px 0 7px;
    color: #f0f8ff;
    font-size: 1.16rem;
}

.history-node-summary {
    margin: 0;
    color: rgba(225, 241, 252, .78);
    line-height: 1.65;
}

.history-node-content {
    margin: 9px 0 0;
    color: rgba(204, 228, 245, .59);
    font-size: .9rem;
    line-height: 1.72;
    white-space: pre-wrap;
}

.history-image {
    width: 100%;
    max-height: 520px;
    margin-top: 16px;
    border-radius: 14px;
    background: rgba(0, 0, 0, .22);
    object-fit: contain;
}

.observatory-admin-grid {
    display: grid;
    grid-template-columns: minmax(280px, .8fr) minmax(0, 1.2fr);
    gap: 16px;
}

.observatory-admin-card {
    padding: 18px;
    border: 1px solid rgba(124, 200, 242, .16);
    border-radius: 17px;
    background: rgba(8, 28, 50, .56);
}

.observatory-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.observatory-field { display: grid; gap: 6px; }
.observatory-field--wide { grid-column: 1 / -1; }
.observatory-field label { color: rgba(218, 239, 253, .72); font-size: .85rem; }

.observatory-field input,
.observatory-field select,
.observatory-field textarea {
    width: 100%;
    padding: 10px 11px;
    border: 1px solid rgba(116, 202, 249, .22);
    border-radius: 11px;
    background: rgba(2, 14, 28, .7);
    color: #edf9ff;
}

.observatory-field textarea { min-height: 105px; resize: vertical; }
.observatory-checkbox { display: inline-flex; gap: 8px; align-items: center; }
.observatory-record-list { display: grid; gap: 10px; max-height: 650px; overflow: auto; }
.observatory-record { padding: 14px; border: 1px solid rgba(105, 194, 241, .16); border-radius: 14px; background: rgba(5, 23, 42, .68); }
.observatory-action--danger { border-color: rgba(255, 119, 138, .35); color: #ffb4c0; }

@media (max-width: 980px) {
    .observatory-stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .visitor-map-layout,
    .observatory-admin-grid { grid-template-columns: 1fr; }
    .visitor-map-detail { min-height: auto; }
}

@media (max-width: 760px) {
    .observatory-card-grid { grid-template-columns: 1fr; }
    .observatory-section-heading { align-items: flex-start; flex-direction: column; }
    .history-overview { grid-template-columns: 1fr; }
    .history-overview-main { min-height: 160px; border-right: 0; border-bottom: 1px solid rgba(132, 207, 249, .16); }
    .history-timeline::before { left: 8px; }
    .history-node { display: block; padding-left: 31px; }
    .history-node-rail { display: flex; gap: 10px; padding: 0 0 8px; text-align: left; }
    .history-node-card::before { left: -29px; }
}

@media (max-width: 576px) {
    .observatory-shell { gap: 21px; }
    .observatory-intro p { font-size: .95rem; }
    .observatory-feature-card { border-radius: 18px; }
    .observatory-feature-head { top: 10px; right: 12px; left: 12px; }
    .observatory-feature-head .observatory-card-label,
    .observatory-feature-index { padding: 4px 8px; font-size: .68rem; }
    .observatory-feature-copy { right: 14px; bottom: 11px; left: 14px; }
    .observatory-feature-card h2 { margin-bottom: 4px; font-size: 1.15rem; }
    .observatory-feature-card p {
        display: -webkit-box;
        max-width: 100%;
        max-height: 2.64em;
        overflow: hidden;
        font-size: .75rem;
        line-height: 1.32;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }
    .observatory-feature-link { margin-top: 7px; padding: 5px 9px; font-size: .76rem; }
    .observatory-map-section,
    .history-story,
    .observatory-section { padding: 16px; border-radius: 17px; }
    .visitor-map-svg { min-height: 255px; }
    .observatory-map-controls { align-items: stretch; }
    .observatory-filter-row { flex: 1 1 100%; }
    .observatory-filter { flex: 1 1 auto; }
    .history-overview-grid { grid-template-columns: 1fr 1fr; }
    .history-overview-item { padding: 16px; }
    .history-node-card { padding: 17px; }
    .observatory-form-grid { grid-template-columns: 1fr; }
    .observatory-field--wide { grid-column: auto; }
}

@media (max-width: 380px) {
    .observatory-stat-grid,
    .history-overview-grid { grid-template-columns: 1fr; }
    .history-overview-item,
    .history-overview-item:nth-child(2n),
    .history-overview-item:nth-last-child(-n+2) { border-right: 0; border-bottom: 1px solid rgba(132, 207, 249, .1); }
    .history-overview-item:last-child { border-bottom: 0; }
    .observatory-map-toolbar { width: 100%; }
    .observatory-map-button { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
    .observatory-feature-card,
    .visitor-map-boundaries path,
    .history-node-card { transition: none; }
    .visitor-star__light { filter: none; animation: none; }
    .visitor-star__bloom,
    .visitor-star__flare,
    .visitor-star__core,
    .visitor-star__pinpoint { animation: none; }
}