#node.network-node-section {
    --network-map-accent: #2f83ff;
    --network-map-metric: #5d93f3;
    --network-map-text: #141821;
    --network-map-text-subtle: #747982;
    --network-map-card-bg: rgba(255, 255, 255, 0.9);
    --network-map-card-border: rgba(19, 31, 48, 0.06);
    position: relative;
    padding: 74px 0;
    overflow: hidden;
    background: #fff;
    color: var(--network-map-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#node.network-node-section .country-change .country-item {
    padding: 0;
    border: 0;
    background: transparent;
    font: inherit;
}

#node.network-node-section .network-node-map {
    margin: 0 auto 20px;
}

.network-map-overview {
    position: relative;
    z-index: 8;
    height: 360px;
    padding: 38px 48px 30px;
    background: #fff;
    text-align: center;
}

.network-map-overview .overview-inner {
    width: min(1180px, 100%);
    height: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.network-map-overview h2 {
    margin: 0;
    color: var(--network-map-text);
    font-size: 42px;
    font-weight: 700;
    line-height: 1.22;
    letter-spacing: 0;
}

.network-map-overview .subtitle {
    margin: 18px 0 0;
    color: var(--network-map-text-subtle);
    font-size: 18px;
    line-height: 1.6;
}

.network-map-overview .metrics-grid {
    margin-top: auto;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    align-items: end;
    gap: 28px;
}

.network-map-overview .metric {
    min-width: 0;
}

.network-map-overview .metric-value {
    display: block;
    color: var(--network-map-metric);
    font-size: 40px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0;
    white-space: nowrap;
}

.network-map-overview .metric-value .data {
    display: inline;
}

.network-map-overview .metric-label {
    display: block;
    margin-top: 14px;
    color: var(--network-map-text-subtle);
    font-size: 16px;
    line-height: 1.3;
    white-space: nowrap;
}

.network-map-overview .corner-mark {
    display: inline-block;
    width: 7px;
    height: 12px;
    margin-left: 4px;
    vertical-align: top;
    border-top: 3px solid currentColor;
    border-right: 3px solid currentColor;
    transform: translateY(-2px) rotate(-45deg);
}

.network-node-map {
    --network-map-vertical-gap: 32px;
    position: relative;
    width: 100%;
    height: 744px;
    min-height: 744px;
    overflow: hidden;
    background: #fff;
}

.network-node-map #canvas-container,
.network-node-map #labels-container {
    position: absolute;
    inset: var(--network-map-vertical-gap) 0;
    width: 100%;
    height: auto;
    overflow: hidden;
}

.network-node-map #canvas-container {
    z-index: 1;
    background: #fff;
}

.network-node-map #canvas-container canvas {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.network-node-map #china-boundary-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.network-node-map .china-boundary-path {
    fill: none;
    stroke: #2878ff;
    stroke-width: 1;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
}

.network-node-map #labels-container {
    z-index: 5;
    pointer-events: none;
}

.network-node-map #ui-container {
    position: absolute;
    top: 22px;
    right: max(24px, calc((100% - 1180px) / 2));
    z-index: 10;
    transition: opacity 0.5s ease;
}

.network-node-map #resource-switch {
    display: flex;
    align-items: center;
    gap: 10px;
}

.network-node-map .resource-icon-btn {
    position: relative;
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    padding: 0;
    border: 0;
    background: transparent;
    color: #9aa1ad;
    cursor: pointer;
    transition: color 0.25s ease, transform 0.25s ease;
}

.network-node-map .resource-icon-btn svg {
    width: 21px;
    height: 21px;
    overflow: visible;
    transform: scale(0.87);
    transform-origin: center;
    stroke-width: 1.8;
}

.network-node-map .resource-icon-btn .iconfont {
    font-size: 21px;
    line-height: 1;
}

.network-node-map .china-outline-icon path {
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
}

.network-node-map .china-outline-icon .china-island {
    fill: currentColor;
    stroke: none;
}

.network-node-map .resource-icon-btn:hover {
    color: #4d596a;
    transform: translateY(-1px);
}

.network-node-map .resource-icon-btn.active {
    color: var(--network-map-accent);
}

.network-node-map .resource-icon-btn.active svg {
    stroke-width: 2.2;
    filter: drop-shadow(0 2px 4px rgba(40, 120, 255, 0.22));
}

.network-node-map .resource-icon-btn:focus {
    outline: none;
}

.network-node-map .resource-icon-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    z-index: 2;
    padding: 3px 6px;
    border: 1px solid #d9e1ec;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.96);
    color: #7b8794;
    font-size: 11px;
    font-weight: 400;
    line-height: 1.2;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -2px);
    transition: opacity 0.16s ease, transform 0.16s ease;
}

.network-node-map .resource-icon-btn:hover::after,
.network-node-map .resource-icon-btn:focus-visible::after {
    opacity: 1;
    transform: translate(-50%, 0);
}

.network-node-map .resource-icon-btn:focus-visible {
    border-radius: 4px;
    outline: 2px solid rgba(47, 131, 255, 0.35);
    outline-offset: 2px;
}

.network-node-map .node-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: -15px;
    padding: 4px;
    border: 1px solid var(--network-map-card-border);
    border-radius: 7px;
    background: var(--network-map-card-bg);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.07);
    backdrop-filter: blur(5px);
    transform: translate(-50%, -100%);
    transition: opacity 0.18s ease, color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    will-change: left, top, opacity;
}

.network-node-map .node-card .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--network-map-accent);
    box-shadow: 0 0 8px rgba(47, 131, 255, 0.65);
    animation: network-map-pulse 1.5s infinite alternate;
}

.network-node-map .node-card .text {
    color: #303743;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
}

.network-node-map .node-card .text-accent {
    color: var(--network-map-accent);
}

.network-node-map .node-card .country-flag {
    display: block;
    flex: 0 0 auto;
    font-size: 14px;
    line-height: 1;
}

.network-node-map .node-card.domestic-region-card {
    margin-top: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    transform: translate(0, -50%);
    transition: none;
}

.network-node-map .node-card.domestic-region-card .text {
    font-size: 11px;
    font-weight: 500;
}

.network-node-map #loading {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 20;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    color: #4b5563;
    font-size: 16px;
    font-weight: 600;
    transform: translate(-50%, -50%);
}

.network-node-map .spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(0, 0, 0, 0.05);
    border-top-color: var(--network-map-accent);
    border-radius: 50%;
    animation: network-map-spin 1s linear infinite;
}

.network-node-map #error-msg {
    position: absolute;
    top: 20px;
    left: 50%;
    z-index: 30;
    display: none;
    padding: 8px 16px;
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 20px;
    background: var(--network-map-card-bg);
    color: #ef4444;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    font-size: 13px;
    font-weight: 500;
    text-align: center;
    transform: translateX(-50%);
    transition: opacity 1s;
}

#node .network-map-quality {
    padding-top: 56px;
    padding-bottom: 74px;
}

@keyframes network-map-pulse {
    from { opacity: 0.5; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1.2); }
}

@keyframes network-map-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 900px) {
    .network-map-overview {
        height: 400px;
        padding: 34px 28px 28px;
    }

    .network-map-overview h2 {
        font-size: 34px;
    }

    .network-map-overview .subtitle {
        font-size: 16px;
    }

    .network-map-overview .metrics-grid {
        gap: 16px;
    }

    .network-map-overview .metric-value {
        font-size: 32px;
    }

    .network-map-overview .metric-label {
        font-size: 14px;
    }
}

@media (max-width: 600px) {
    #node.network-node-section {
        padding: 50px 0;
    }

    .network-map-overview {
        height: 560px;
        padding: 30px 20px 26px;
    }

    .network-map-overview h2 {
        font-size: 30px;
        line-height: 1.28;
    }

    .network-map-overview .subtitle {
        margin-top: 14px;
        font-size: 15px;
    }

    .network-map-overview .metrics-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-content: end;
        gap: 24px 18px;
    }

    .network-map-overview .metric:nth-child(5) {
        grid-column: 1 / -1;
    }

    .network-map-overview .metric-value {
        font-size: 30px;
    }

    .network-map-overview .metric-label {
        margin-top: 9px;
        font-size: 14px;
    }

    .network-node-map {
        --network-map-vertical-gap: 0;
        height: 560px;
        min-height: 560px;
    }

    .network-node-map #ui-container {
        top: 16px;
        right: 16px;
    }

    .network-node-map #error-msg {
        width: calc(100% - 32px);
    }

    #node .network-map-quality {
        padding-top: 36px;
        padding-bottom: 50px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .network-node-map .node-card .dot,
    .network-node-map .spinner {
        animation: none;
    }
}