release: bump version to 0.41.0

2026-04-27 13:58:29 +08:00
parent f9c1334365
commit 3ea99a9529
25 changed files with 1652 additions and 171 deletions
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
  "name": "planet-frontend",
-  "version": "0.40.5",
+  "version": "0.41.0",
  "private": true,
  "packageManager": "bun@1",
  "dependencies": {
--- a/frontend/public/earth/css/hud.css
+++ b/frontend/public/earth/css/hud.css
@@ -827,6 +827,12 @@
    rgba(255, 255, 255, 0.04);
 }

+.earth-mobile-layer-card.is-disabled,
+.earth-mobile-layer-card:disabled {
+  cursor: not-allowed;
+  opacity: 0.46;
+}
+
 .earth-mobile-layer-card-icon {
  font-size: 22px;
  color: var(--hud-accent-strong);
@@ -1401,6 +1407,12 @@
  transform: translateX(16px);
 }

+label.is-disabled.earth-mobile-settings-card {
+  opacity: 0.38;
+  cursor: not-allowed;
+  pointer-events: none;
+}
+
 .earth-mobile-settings-slider-row {
  display: flex;
  align-items: center;
@@ -2478,6 +2490,12 @@
  transform: translateX(calc(16px * var(--hud-scale)));
 }

+.earth-settings-item.is-disabled {
+  opacity: 0.38;
+  cursor: not-allowed;
+  pointer-events: none;
+}
+
@media (max-width: 960px) {
  .earth-settings-sheet {
    top: 24px;
--- a/frontend/public/earth/css/layer-panel.css
+++ b/frontend/public/earth/css/layer-panel.css
@@ -271,6 +271,16 @@
  opacity: 1;
 }

+.layer-row-toggle.is-disabled {
+  cursor: not-allowed;
+  opacity: 0.35;
+}
+
+.layer-row:has(.layer-row-toggle.is-disabled) .layer-row-label,
+.layer-row:has(.layer-row-toggle.is-disabled) .layer-row-icon {
+  opacity: 0.4;
+}
+
 /* Thumb */
 .layer-row-toggle-track::after {
  content: "";
--- a/frontend/public/earth/data/countries-admin0.min.geojson
+++ b/frontend/public/earth/data/countries-admin0.min.geojson
--- a/frontend/public/earth/index.html
+++ b/frontend/public/earth/index.html
@@ -108,33 +108,13 @@

          <!-- Layer rows -->
          <div class="layer-panel-list" id="layer-panel-list">
-            <div class="layer-row" data-layer-name="地形 terrain">
-              <span class="material-symbols-rounded layer-row-icon">landscape</span>
+            <div class="layer-row" data-layer-name="海缆 subsea cables">
+              <span class="material-symbols-rounded layer-row-icon">cable</span>
              <div class="layer-row-copy">
-                <span class="layer-row-label">地形</span>
-                <span class="layer-row-meta">Terrain</span>
+                <span class="layer-row-label">海缆</span>
+                <span class="layer-row-meta">Subsea Cables</span>
              </div>
-              <button id="toggle-terrain" class="layer-row-toggle" type="button" role="switch" aria-checked="false" title="切换地形显示" data-status-target="terrain-status">
-                <span class="layer-row-toggle-track"></span>
-              </button>
-            </div>
-            <div class="layer-row" data-layer-name="经纬线 graticule 经纬 latitude longitude">
-              <span class="material-symbols-rounded layer-row-icon">grid_4x4</span>
-              <div class="layer-row-copy">
-                <span class="layer-row-label">经纬线</span>
-                <span class="layer-row-meta">Graticule</span>
-              </div>
-              <button id="toggle-grid-lines" class="layer-row-toggle active" type="button" role="switch" aria-checked="true" title="切换经纬线显示">
-                <span class="layer-row-toggle-track"></span>
-              </button>
-            </div>
-            <div class="layer-row" data-layer-name="卫星 satellites">
-              <span class="material-symbols-rounded layer-row-icon">satellite_alt</span>
-              <div class="layer-row-copy">
-                <span class="layer-row-label">卫星</span>
-                <span class="layer-row-meta">Satellites</span>
-              </div>
-              <button id="toggle-satellites" class="layer-row-toggle" type="button" role="switch" aria-checked="false" title="切换卫星显示">
+              <button id="toggle-cables" class="layer-row-toggle active" type="button" role="switch" aria-checked="true" title="切换海缆显示">
                <span class="layer-row-toggle-track"></span>
              </button>
            </div>
@@ -148,13 +128,13 @@
                <span class="layer-row-toggle-track"></span>
              </button>
            </div>
-            <div class="layer-row" data-layer-name="海缆 subsea cables">
-              <span class="material-symbols-rounded layer-row-icon">cable</span>
+            <div class="layer-row" data-layer-name="卫星 satellites">
+              <span class="material-symbols-rounded layer-row-icon">satellite_alt</span>
              <div class="layer-row-copy">
-                <span class="layer-row-label">海缆</span>
-                <span class="layer-row-meta">Subsea Cables</span>
+                <span class="layer-row-label">卫星</span>
+                <span class="layer-row-meta">Satellites</span>
              </div>
-              <button id="toggle-cables" class="layer-row-toggle active" type="button" role="switch" aria-checked="true" title="切换海缆显示">
+              <button id="toggle-satellites" class="layer-row-toggle" type="button" role="switch" aria-checked="false" title="切换卫星显示">
                <span class="layer-row-toggle-track"></span>
              </button>
            </div>
@@ -178,6 +158,56 @@
                <span class="layer-row-toggle-track"></span>
              </button>
            </div>
+            <div class="layer-row" data-layer-name="地形 terrain">
+              <span class="material-symbols-rounded layer-row-icon">landscape</span>
+              <div class="layer-row-copy">
+                <span class="layer-row-label">地形</span>
+                <span class="layer-row-meta">Terrain</span>
+              </div>
+              <button id="toggle-terrain" class="layer-row-toggle" type="button" role="switch" aria-checked="false" title="切换地形显示" data-status-target="terrain-status">
+                <span class="layer-row-toggle-track"></span>
+              </button>
+            </div>
+            <div class="layer-row" data-layer-name="高清材质 纹理 texture hd earth">
+              <span class="material-symbols-rounded layer-row-icon">globe</span>
+              <div class="layer-row-copy">
+                <span class="layer-row-label">高清材质</span>
+                <span class="layer-row-meta">High-Res Texture</span>
+              </div>
+              <button id="toggle-earth-high-res-texture" class="layer-row-toggle active" type="button" role="switch" aria-checked="true" title="切换高清材质显示">
+                <span class="layer-row-toggle-track"></span>
+              </button>
+            </div>
+            <div class="layer-row" data-layer-name="大气 云图 云层 clouds atmosphere">
+              <span class="material-symbols-rounded layer-row-icon">cloud</span>
+              <div class="layer-row-copy">
+                <span class="layer-row-label">大气云图</span>
+                <span class="layer-row-meta">Cloud Layer</span>
+              </div>
+              <button id="toggle-atmosphere-clouds" class="layer-row-toggle active" type="button" role="switch" aria-checked="true" title="切换大气云图显示">
+                <span class="layer-row-toggle-track"></span>
+              </button>
+            </div>
+            <div class="layer-row" data-layer-name="国界 国家 borders countries boundary">
+              <span class="material-symbols-rounded layer-row-icon">public</span>
+              <div class="layer-row-copy">
+                <span class="layer-row-label">国界</span>
+                <span class="layer-row-meta">Country Borders</span>
+              </div>
+              <button id="toggle-country-boundaries" class="layer-row-toggle active" type="button" role="switch" aria-checked="true" title="切换国界显示">
+                <span class="layer-row-toggle-track"></span>
+              </button>
+            </div>
+            <div class="layer-row" data-layer-name="经纬线 graticule 经纬 latitude longitude">
+              <span class="material-symbols-rounded layer-row-icon">grid_4x4</span>
+              <div class="layer-row-copy">
+                <span class="layer-row-label">经纬线</span>
+                <span class="layer-row-meta">Graticule</span>
+              </div>
+              <button id="toggle-grid-lines" class="layer-row-toggle" type="button" role="switch" aria-checked="false" title="切换经纬线显示">
+                <span class="layer-row-toggle-track"></span>
+              </button>
+            </div>
          </div>

          <!-- Empty search state -->
--- a/frontend/public/earth/js/compute-centers.js
+++ b/frontend/public/earth/js/compute-centers.js
@@ -5,6 +5,7 @@ import { getSurfaceMarkerCameraScale, latLonToVector3 } from "./utils.js";

 const computeCenterGroup = new THREE.Group();
 const computeCenterMarkers = [];
+const COMPUTE_CENTER_RENDER_ORDER = 4.5;
 const textureCache = new Map();
 let showComputeCenters = true;
 let supercomputerCount = 0;
@@ -196,7 +197,7 @@ function createComputeCenterMarker(markerData) {
    ),
  );
  marker.scale.setScalar(baseScale);
-  marker.renderOrder = 8;
+  marker.renderOrder = COMPUTE_CENTER_RENDER_ORDER;
  marker.visible = showComputeCenters;
  marker.userData = {
    ...markerData,
--- a/frontend/public/earth/js/constants.js
+++ b/frontend/public/earth/js/constants.js
@@ -155,7 +155,7 @@ export const TERRAIN_CONFIG = {
  baseZoom: 4,
  geometryWidthSegments: 320,
  geometryHeightSegments: 320,
-  baseRadiusOffset: 0.04,
+  baseRadiusOffset: 0.16,
  exaggeration: 34,
  landRevealFadeMeters: 220,
  maxConcurrentRequests: 10,
@@ -168,6 +168,32 @@ export const TERRAIN_CONFIG = {
    "/api/v1/visualization/terrain/terrarium/{z}/{x}/{y}.png",
 };

+export const COUNTRY_BOUNDARY_CONFIG = {
+  dataPath: "/earth/data/countries-admin0.min.geojson",
+  lineAltitudeOffset: 0.24,
+  hoverAltitudeOffset: 0.32,
+  lineColor: 0x7fc7ff,
+  lineOpacity: 0.58,
+  lineRenderOrder: 2.2,
+  dimmedLineOpacity: 0.18,
+  hoverLineColor: 0xff3b1f,
+  hoverLineOpacity: 1.0,
+  hoverLineRenderOrder: 2.3,
+  hoverGlowOpacity: 0.38,
+  hoverGlowLineWidth: 3,
+  hoverGlowRenderOrderOffset: 0.01,
+  hoverGlowRadiusOffset: 0.04,
+  tintAltitudeOffset: 0.04,
+  tintColor: 0x0b1830,
+  tintRenderOrder: 0.2,
+  landColor: 0x080f1b,
+  landOpacity: 1.0,
+  landAltitudeOffset: 0.08,
+  landRenderOrder: 0.86,
+  landMaskWidth: 2048,
+  landMaskHeight: 1024,
+};
+
 export const PATHS = {
  cablesApi: '/api/v1/visualization/geo/cables',
  landingPointsApi: '/api/v1/visualization/geo/landing-points',
@@ -393,19 +419,43 @@ export const PREDICTED_ORBIT_CONFIG = {
 };

 export const GRID_CONFIG = {
-  latitudeStep: 10,
+  radiusOffset: 0.14,
+  color: 0xc0e0ff,
+  opacity: 0.08,
+  lineWidth: 1,
+  renderOrder: 2.05,
+  latitudeStep: 15,
  longitudeStep: 30,
-  gridStep: 5
+  segmentStep: 5,
+};
+
+export const CLOUD_LAYER_CONFIG = {
+  radiusOffset: 3,
+  widthSegments: 64,
+  heightSegments: 64,
+  opacity: 0.15,
+  textureUrl: "./assets/earth_clouds_1024.png",
+};
+
+export const STARFIELD_CONFIG = {
+  count: 8000,
+  minRadius: 800,
+  radiusJitter: 200,
+  color: 0xffffff,
+  size: 0.5,
 };

 export const EARTH_MATERIAL_CONFIG = {
-  // Diffuse color multiplies with texture — pure white = full saturation,
-  // slightly grey-blue pulls perceived saturation down without a custom shader.
-  color: 0xcdd8e6,
+  // Base sphere sits below the country fill and high-res texture overlays.
+  // Keep it dark so a delayed overlay never flashes or reads as a white layer.
+  color: 0x010609,
  specular: 0x1a2d45,
  shininess: 12,
-  emissive: 0x050a12,
-  opacity: 0.96,
+  emissive: 0x010609,
+  opacity: 1,
+  textureOverlayAltitudeOffset: 0.1,
+  textureOverlayOpacity: 0.88,
+  textureOverlayRenderOrder: 0.96,

  // Depth-mask occluder keeps far-side objects hidden behind the earth
  occluderRadiusFactor: 0.999,
--- a/frontend/public/earth/js/controls.js
+++ b/frontend/public/earth/js/controls.js
@@ -29,6 +29,11 @@ import {
  clearLockedObject,
  clearLockedObjectAndInfo,
  setCablesEnabled,
+  setCountryBoundariesEnabled,
+  setHighResTextureEnabled,
+  getHighResTextureEnabled,
+  setAtmosphereCloudsEnabled,
+  getAtmosphereCloudsEnabled,
  setSatellitesEnabled,
  getSatellitesEnabled,
 } from "./main.js";
@@ -41,6 +46,7 @@ import {
 } from "./satellites.js";
 import { getShowCables } from "./cables.js";
 import { toggleBGP, getShowBGP, getBGPCount } from "./bgp.js";
+import { getShowCountryBoundaries } from "./country-boundaries.js";
 import {
  toggleComputeCenters,
  getShowComputeCenters,
@@ -73,6 +79,7 @@ export let rotationMode = ROTATION_MODE.ROTATE;
 let dayNightEnabled = true;
 let defaultEarthZoom = CONFIG.defaultViewZoom;
 let activeCamera = null;
+let settingsApplyPromise = Promise.resolve();

 let earthObj = null;
 let listeners = [];
@@ -331,9 +338,31 @@ function getMobileLayerButtons(layerId) {
  ).filter((button) => button instanceof HTMLButtonElement);
 }

+function getLayerDisabledState(layerId) {
+  if (layerId === "trails" && !getSatellitesEnabled()) {
+    return {
+      disabled: true,
+      statusText: "不可用",
+      tooltip: "卫星关闭时不可用",
+    };
+  }
+  if (layerId === "terrain" && !getHighResTextureEnabled()) {
+    return {
+      disabled: true,
+      statusText: "不可用",
+      tooltip: "高清材质关闭时不可用",
+    };
+  }
+  return {
+    disabled: false,
+    statusText: null,
+    tooltip: null,
+  };
+}
+
 function syncMobileLayerCards() {
  const summary = document.getElementById("mobile-layer-summary");
-  const definitions = getSortedLayerDefinitions();
+  const definitions = getDisplayLayerDefinitions();
  let activeCount = 0;

  definitions.forEach((definition) => {
@@ -342,11 +371,19 @@ function syncMobileLayerCards() {
      activeCount += 1;
    }
    getMobileLayerButtons(definition.id).forEach((button) => {
+      const disabledState = getLayerDisabledState(definition.id);
      button.classList.toggle("is-active", visible);
+      button.classList.toggle("is-disabled", disabledState.disabled);
+      button.disabled = disabledState.disabled;
      button.setAttribute("aria-checked", visible ? "true" : "false");
+      if (disabledState.tooltip) {
+        button.title = disabledState.tooltip;
+      } else {
+        button.removeAttribute("title");
+      }
      const status = button.querySelector("[data-mobile-layer-status]");
      if (status) {
-        status.textContent = visible ? "开启" : "关闭";
+        status.textContent = disabledState.statusText || (visible ? "开启" : "关闭");
      }
    });
  });
@@ -360,7 +397,7 @@ function renderMobileLayerCards() {
  const list = document.getElementById("mobile-layer-list");
  if (!(list instanceof HTMLElement)) return;

-  const definitions = getSortedLayerDefinitions();
+  const definitions = getDisplayLayerDefinitions();
  list.innerHTML = definitions
    .map((definition) => `
      <button
@@ -384,6 +421,7 @@ function renderMobileLayerCards() {
    bindListener(button, "click", async (event) => {
      const target = event.currentTarget;
      if (!(target instanceof HTMLButtonElement)) return;
+      if (target.disabled || target.classList.contains("is-disabled")) return;
      const layerId = target.dataset.mobileLayerButton;
      const definition = layerId ? getLayerDefinition(layerId) : null;
      if (!definition) return;
@@ -594,6 +632,21 @@ function getSortedLayerDefinitions({ includeUnprioritized = true } = {}) {
    .sort(compareLayerDefinitionsByStartupPriority);
 }

+function getDisplayLayerDefinitions() {
+  return Array.from(layerRegistry.values()).sort((left, right) => {
+    const leftOrder = Number.isFinite(left?.displayOrder)
+      ? left.displayOrder
+      : Number.POSITIVE_INFINITY;
+    const rightOrder = Number.isFinite(right?.displayOrder)
+      ? right.displayOrder
+      : Number.POSITIVE_INFINITY;
+    if (leftOrder !== rightOrder) {
+      return leftOrder - rightOrder;
+    }
+    return String(left?.id || "").localeCompare(String(right?.id || ""));
+  });
+}
+
 function shouldIncludeLayerInStartupLoad(definition) {
  if (!Number.isFinite(definition?.startupPriority)) {
    return false;
@@ -658,13 +711,22 @@ function getCurrentSharedSettingsSnapshot() {
  };
 }

+function getDefaultLayerVisibilitySnapshot() {
+  return Object.fromEntries(
+    getPersistedLayers().map((layer) => [layer.id, Boolean(layer.defaultActive)]),
+  );
+}
+
 function captureEarthSettingsDefaults() {
  if (!earthSettingsDefaults) {
    const panelVisibility = getCurrentPanelVisibilitySnapshot();
    const shared = getCurrentSharedSettingsSnapshot();
    earthSettingsDefaults = {
      version: 2,
-      shared,
+      shared: {
+        ...shared,
+        layerVisibility: getDefaultLayerVisibilitySnapshot(),
+      },
      views: {
        desktop: {
          panelVisibility: { ...panelVisibility },
@@ -680,7 +742,7 @@ function captureEarthSettingsDefaults() {

 function cloneEarthSettings(settings) {
  return {
-    version: 2,
+    version: 3,
    shared: {
      rotationMode: settings.shared.rotationMode,
      cruiseModules: [...(settings.shared.cruiseModules || DEFAULT_CRUISE_MODULES)],
@@ -753,6 +815,10 @@ function normalizeEarthSettings(rawSettings, defaults) {
    }
  });

+  if ((rawSettings?.version || 0) < 3 && inputLayerVisibility.gridLines === true) {
+    normalizedLayerVisibility.gridLines = defaults.shared.layerVisibility.gridLines;
+  }
+
  const nextRotationMode =
    sharedSettings?.rotationMode === ROTATION_MODE.CRUISE
      ? ROTATION_MODE.CRUISE
@@ -779,7 +845,7 @@ function normalizeEarthSettings(rawSettings, defaults) {
  );

  return {
-    version: 2,
+    version: 3,
    shared: {
      rotationMode: nextRotationMode,
      cruiseModules: nextCruiseModules.length > 0
@@ -805,7 +871,7 @@ function normalizeEarthSettings(rawSettings, defaults) {
 }

 function getPersistedLayers() {
-  return getSortedLayerDefinitions().filter((layer) => layer.persist !== false);
+  return getDisplayLayerDefinitions().filter((layer) => layer.persist !== false);
 }

 function getLayerDefinition(layerId) {
@@ -1149,6 +1215,7 @@ async function setSatellitesLayerEnabled(button, enabled, { persist = true, sile
    } else if (enabled) {
      setEarthStatValue("satellite-count", `${getSatelliteCount()} 颗`);
    }
+    syncTrailsAvailability();
    syncMobileLayerCards();
    if (persist) persistEarthSettings();
    return enabled;
@@ -1179,6 +1246,61 @@ function setGridLinesLayerEnabled(button, enabled, { persist = true, silent = fa
  return enabled;
 }

+async function setCountryBoundariesLayerEnabled(button, enabled, { persist = true, silent = false } = {}) {
+  try {
+    if (enabled) {
+      setLayerButtonState(button, {
+        active: false,
+        loading: true,
+        tooltip: "国界加载中...",
+      });
+    }
+    await setCountryBoundariesEnabled(enabled, { suppressStatus: silent });
+    setLayerButtonState(button, {
+      active: enabled,
+      loading: false,
+      tooltip: enabled ? "隐藏国界" : "显示国界",
+    });
+    syncMobileLayerCards();
+    if (persist) persistEarthSettings();
+    return enabled;
+  } catch (error) {
+    console.error("切换国界显示失败:", error);
+    setLayerButtonState(button, {
+      active: false,
+      loading: false,
+      tooltip: "显示国界",
+    });
+    syncMobileLayerCards();
+    if (persist) persistEarthSettings();
+    return false;
+  }
+}
+
+function setHighResTextureLayerEnabled(button, enabled, { persist = true, silent = false } = {}) {
+  setHighResTextureEnabled(enabled, { suppressStatus: silent });
+  setLayerButtonState(button, {
+    active: enabled,
+    loading: false,
+    tooltip: enabled ? "隐藏高清材质" : "显示高清材质",
+  });
+  syncMobileLayerCards();
+  if (persist) persistEarthSettings();
+  return enabled;
+}
+
+function setAtmosphereCloudsLayerEnabled(button, enabled, { persist = true, silent = false } = {}) {
+  setAtmosphereCloudsEnabled(enabled, { suppressStatus: silent });
+  setLayerButtonState(button, {
+    active: enabled,
+    loading: false,
+    tooltip: enabled ? "隐藏大气云图" : "显示大气云图",
+  });
+  syncMobileLayerCards();
+  if (persist) persistEarthSettings();
+  return enabled;
+}
+
 function setBGPLayerEnabled(button, enabled, { persist = true, silent = false } = {}) {
  clearSelectionIfHiding(!enabled);
  toggleBGP(enabled);
@@ -1216,9 +1338,11 @@ function setComputeCentersLayerEnabled(button, enabled, { persist = true, silent

 function setTrailsLayerEnabled(button, enabled, { persist = true, silent = false } = {}) {
  toggleTrails(enabled);
+  const disabledState = getLayerDisabledState("trails");
  setLayerButtonState(button, {
    active: enabled,
-    tooltip: enabled ? "隐藏轨迹" : "显示轨迹",
+    disabled: disabledState.disabled,
+    tooltip: disabledState.tooltip || (enabled ? "隐藏轨迹" : "显示轨迹"),
  });
  syncMobileLayerCards();
  if (persist) persistEarthSettings();
@@ -1228,6 +1352,17 @@ function setTrailsLayerEnabled(button, enabled, { persist = true, silent = false
  return enabled;
 }

+function syncTrailsAvailability() {
+  const trailsEnabled = getShowTrails();
+  const disabledState = getLayerDisabledState("trails");
+  setLayerButtonState(getLayerButton("trails"), {
+    active: trailsEnabled,
+    disabled: disabledState.disabled,
+    tooltip: disabledState.tooltip || (trailsEnabled ? "隐藏轨迹" : "显示轨迹"),
+  });
+  syncMobileLayerCards();
+}
+
 async function setCablesLayerEnabled(button, enabled, { persist = true, silent = false } = {}) {
  clearSelectionIfHiding(!enabled);
  try {
@@ -1253,23 +1388,6 @@ async function applyLayerVisibilitySettings(layerVisibility = {}, options = {})

 function getBuiltinLayerDefinitions() {
  return [
-    {
-      id: "terrain",
-      buttonId: "toggle-terrain",
-      icon: "landscape",
-      label: "地形",
-      meta: "Terrain",
-      keywords: "地形 terrain",
-      defaultActive: false,
-      startupPriority: null,
-      startupMode: "visible",
-      startupLabel: "地形",
-      startupMessage: "正在渲染地形...",
-      statusTarget: "terrain-status",
-      getVisible: () => showTerrain,
-      setVisible: (visible, options = {}) =>
-        setTerrainEnabled(getLayerButton("terrain"), visible, options),
-    },
    {
      id: "gridLines",
      buttonId: "toggle-grid-lines",
@@ -1277,8 +1395,9 @@ function getBuiltinLayerDefinitions() {
      label: "经纬线",
      meta: "Graticule",
      keywords: "经纬线 graticule 经纬 latitude longitude",
-      defaultActive: true,
-      startupPriority: null,
+      defaultActive: false,
+      displayOrder: 100,
+      startupPriority: 10,
      startupMode: "visible",
      startupLabel: "经纬线",
      startupMessage: "",
@@ -1287,36 +1406,55 @@ function getBuiltinLayerDefinitions() {
        setGridLinesLayerEnabled(getLayerButton("gridLines"), visible, options),
    },
    {
-      id: "satellites",
-      buttonId: "toggle-satellites",
-      icon: "satellite_alt",
-      label: "卫星",
-      meta: "Satellites",
-      keywords: "卫星 satellites",
-      defaultActive: false,
-      startupPriority: 30,
-      startupMode: "visible",
-      startupLabel: "卫星",
-      startupMessage: "正在加载卫星...",
-      getVisible: () => getSatellitesEnabled(),
+      id: "countryBoundaries",
+      buttonId: "toggle-country-boundaries",
+      icon: "public",
+      label: "国界",
+      meta: "Country Borders",
+      keywords: "国界 国家 borders countries boundary",
+      defaultActive: true,
+      displayOrder: 90,
+      startupPriority: 20,
+      startupMode: "preload",
+      startupLabel: "海陆基座",
+      startupMessage: "正在加载海陆基座...",
+      getVisible: () => getShowCountryBoundaries(),
      setVisible: (visible, options = {}) =>
-        setSatellitesLayerEnabled(getLayerButton("satellites"), visible, options),
+        setCountryBoundariesLayerEnabled(getLayerButton("countryBoundaries"), visible, options),
    },
    {
-      id: "trails",
-      buttonId: "toggle-trails",
-      icon: "timeline",
-      label: "轨迹",
-      meta: "Trails",
-      keywords: "轨迹 trails",
+      id: "earthHighResTexture",
+      buttonId: "toggle-earth-high-res-texture",
+      icon: "globe",
+      label: "高清材质",
+      meta: "High-Res Texture",
+      keywords: "高清 材质 纹理 texture hd 地表 earth",
      defaultActive: true,
-      startupPriority: null,
+      displayOrder: 70,
+      startupPriority: 30,
      startupMode: "visible",
-      startupLabel: "轨迹",
-      startupMessage: "",
-      getVisible: () => getShowTrails(),
+      startupLabel: "高清材质",
+      startupMessage: "正在启用高清材质...",
+      getVisible: () => getHighResTextureEnabled(),
      setVisible: (visible, options = {}) =>
-        setTrailsLayerEnabled(getLayerButton("trails"), visible, options),
+        setHighResTextureLayerEnabled(getLayerButton("earthHighResTexture"), visible, options),
+    },
+    {
+      id: "atmosphereClouds",
+      buttonId: "toggle-atmosphere-clouds",
+      icon: "cloud",
+      label: "大气云图",
+      meta: "Cloud Layer",
+      keywords: "大气 云图 云层 clouds atmosphere",
+      defaultActive: true,
+      displayOrder: 80,
+      startupPriority: 40,
+      startupMode: "visible",
+      startupLabel: "大气云图",
+      startupMessage: "",
+      getVisible: () => getAtmosphereCloudsEnabled(),
+      setVisible: (visible, options = {}) =>
+        setAtmosphereCloudsLayerEnabled(getLayerButton("atmosphereClouds"), visible, options),
    },
    {
      id: "cables",
@@ -1326,7 +1464,8 @@ function getBuiltinLayerDefinitions() {
      meta: "Subsea Cables",
      keywords: "海缆 subsea cables",
      defaultActive: true,
-      startupPriority: 20,
+      displayOrder: 10,
+      startupPriority: 50,
      startupMode: "visible",
      startupLabel: "海缆",
      startupMessage: {
@@ -1345,7 +1484,8 @@ function getBuiltinLayerDefinitions() {
      meta: "Compute Centers",
      keywords: "算力中心 compute centers gpu 超算",
      defaultActive: true,
-      startupPriority: 35,
+      displayOrder: 40,
+      startupPriority: 60,
      startupMode: "preload",
      startupLabel: "算力中心",
      startupMessage: "正在加载算力中心...",
@@ -1361,7 +1501,8 @@ function getBuiltinLayerDefinitions() {
      meta: "Routing Signals",
      keywords: "bgp观测 routing signals",
      defaultActive: true,
-      startupPriority: 40,
+      displayOrder: 50,
+      startupPriority: 70,
      startupMode: "preload",
      startupLabel: "BGP态势",
      startupMessage: "正在加载BGP态势...",
@@ -1369,6 +1510,58 @@ function getBuiltinLayerDefinitions() {
      setVisible: (visible, options = {}) =>
        setBGPLayerEnabled(getLayerButton("bgp"), visible, options),
    },
+    {
+      id: "satellites",
+      buttonId: "toggle-satellites",
+      icon: "satellite_alt",
+      label: "卫星",
+      meta: "Satellites",
+      keywords: "卫星 satellites",
+      defaultActive: false,
+      displayOrder: 30,
+      startupPriority: 80,
+      startupMode: "visible",
+      startupLabel: "卫星",
+      startupMessage: "正在加载卫星...",
+      getVisible: () => getSatellitesEnabled(),
+      setVisible: (visible, options = {}) =>
+        setSatellitesLayerEnabled(getLayerButton("satellites"), visible, options),
+    },
+    {
+      id: "trails",
+      buttonId: "toggle-trails",
+      icon: "timeline",
+      label: "轨迹",
+      meta: "Trails",
+      keywords: "轨迹 trails",
+      defaultActive: true,
+      displayOrder: 20,
+      startupPriority: null,
+      startupMode: "visible",
+      startupLabel: "轨迹",
+      startupMessage: "",
+      getVisible: () => getShowTrails(),
+      setVisible: (visible, options = {}) =>
+        setTrailsLayerEnabled(getLayerButton("trails"), visible, options),
+    },
+    {
+      id: "terrain",
+      buttonId: "toggle-terrain",
+      icon: "landscape",
+      label: "地形",
+      meta: "Terrain",
+      keywords: "地形 terrain",
+      defaultActive: false,
+      displayOrder: 60,
+      startupPriority: null,
+      startupMode: "visible",
+      startupLabel: "地形",
+      startupMessage: "正在渲染地形...",
+      statusTarget: "terrain-status",
+      getVisible: () => showTerrain,
+      setVisible: (visible, options = {}) =>
+        setTerrainEnabled(getLayerButton("terrain"), visible, options),
+    },
  ];
 }

@@ -1430,6 +1623,7 @@ function syncLayerRowDefinition(definition, { appendIfMissing = false } = {}) {
 function registerLayerDefinition(definition, options = {}) {
  const normalizedDefinition = {
    persist: true,
+    displayOrder: null,
    startupPriority: null,
    startupMode: "visible",
    startupLabel: "",
@@ -1818,6 +2012,31 @@ function applyDayNightEnabled(enabled, { persist = true } = {}) {
  if (persist) persistEarthSettings();
 }

+export function setDayNightEnabledExternal(enabled, { persist = true } = {}) {
+  applyDayNightEnabled(enabled, { persist });
+}
+
+export function getDayNightEnabled() {
+  return dayNightEnabled;
+}
+
+export function setTerrainLayerInteractable(enabled) {
+  const button = getLayerButton("terrain");
+  setLayerButtonState(button, {
+    disabled: !enabled,
+    tooltip: enabled ? null : "高清材质关闭时不可用",
+  });
+  syncMobileLayerCards();
+}
+
+export function setDayNightInteractable(enabled) {
+  document.querySelectorAll("#toggle-daynight, [data-daynight-toggle]").forEach((input) => {
+    input.disabled = !enabled;
+    const label = input.closest("label");
+    if (label) label.classList.toggle("is-disabled", !enabled);
+  });
+}
+
 function setupSettingsControls() {
  const settingsTrigger = document.getElementById("settings-trigger");
  const settingsClose = document.getElementById("settings-close");
@@ -1960,7 +2179,7 @@ function setupSettingsControls() {
  });

  captureEarthSettingsDefaults();
-  applyEarthSettings(loadEarthSettings());
+  settingsApplyPromise = applyEarthSettings(loadEarthSettings());
  syncAllHudPanelToggles();
  syncRotationModeButtons();
  syncCruiseModuleControls();
@@ -2283,7 +2502,7 @@ function resetCleanup() {
  listeners = [];
 }

-export function setupControls(camera, renderer, scene, earth) {
+export async function setupControls(camera, renderer, scene, earth) {
  resetCleanup();
  activeCamera = camera;
  earthObj = earth;
@@ -2292,6 +2511,8 @@ export function setupControls(camera, renderer, scene, earth) {
  setupWheelZoom(camera, renderer);
  setupRotateControls(camera, earth);
  setupTerrainControls();
+  await settingsApplyPromise;
+  syncTrailsAvailability();
  setupLiquidGlassInteractions();
  setupToolbarHubCluster();
  setupKeyboardControls();
@@ -2622,7 +2843,11 @@ function bindLayerButton(row, definition) {
  if (button.dataset.layerBound === "true") return;

  bindListener(button, "click", async function () {
-    if (this.classList.contains("is-loading")) {
+    if (
+      this.disabled ||
+      this.classList.contains("is-loading") ||
+      this.classList.contains("is-disabled")
+    ) {
      return;
    }
    await definition.setVisible(!definition.getVisible());
@@ -2638,6 +2863,7 @@ export function registerLayer({
  keywords = "",
  defaultActive = false,
  persist = true,
+  displayOrder = null,
  startupPriority = null,
  startupMode = "visible",
  startupLabel = "",
@@ -2658,6 +2884,7 @@ export function registerLayer({
      keywords,
      defaultActive,
      persist,
+      displayOrder,
      startupPriority,
      startupMode,
      startupLabel,
--- a/frontend/public/earth/js/country-boundaries.js
+++ b/frontend/public/earth/js/country-boundaries.js
@@ -0,0 +1,500 @@
+import * as THREE from "three";
+import { CONFIG, COUNTRY_BOUNDARY_CONFIG } from "./constants.js";
+import { latLonToVector3 } from "./utils.js";
+
+// ─── Module state ──────────────────────────────────────────────────────────────
+let _earthObj = null;
+let _features = [];
+let _landMesh = null;
+let _tintMesh = null;
+let _boundaryLines = null;
+let _hoverGlowLines = null;
+let _hoverLines = null;
+let _hoveredFeature = null;
+let _hoveredGroupKey = null;
+let _visible = false;
+let _landFillEnabled = true;
+let _landFillSuppressed = false;
+let _tintEnabled = false;
+let _loaded = false;
+let _loadPromise = null;
+
+const OCEAN_HEX = 0x010609;
+// ─── Equirectangular land/ocean fill texture ──────────────────────────────────
+
+function hexToStyle(hex) {
+  return `#${hex.toString(16).padStart(6, "0")}`;
+}
+
+function hexToRgb(hex) {
+  return [
+    (hex >> 16) & 255,
+    (hex >> 8) & 255,
+    hex & 255,
+  ];
+}
+
+function buildLandTexture(features) {
+  const width = COUNTRY_BOUNDARY_CONFIG.landMaskWidth;
+  const height = COUNTRY_BOUNDARY_CONFIG.landMaskHeight;
+
+  const canvas = document.createElement("canvas");
+  canvas.width = width;
+  canvas.height = height;
+  const ctx = canvas.getContext("2d");
+  const oceanRgb = hexToRgb(OCEAN_HEX);
+
+  if (!ctx) {
+    const oceanData = new Uint8Array(width * height * 4);
+    for (let i = 0; i < oceanData.length; i += 4) {
+      oceanData[i] = oceanRgb[0];
+      oceanData[i + 1] = oceanRgb[1];
+      oceanData[i + 2] = oceanRgb[2];
+      oceanData[i + 3] = 255;
+    }
+    const fallbackTexture = new THREE.DataTexture(
+      oceanData,
+      width,
+      height,
+      THREE.RGBAFormat,
+    );
+    fallbackTexture.needsUpdate = true;
+    return fallbackTexture;
+  }
+
+  // Ocean background
+  ctx.fillStyle = hexToStyle(OCEAN_HEX);
+  ctx.fillRect(0, 0, width, height);
+
+  // Land polygons using evenodd fill rule so holes (lakes, islands) work correctly
+  ctx.fillStyle = hexToStyle(COUNTRY_BOUNDARY_CONFIG.landColor);
+
+  for (const feat of features) {
+    const geom = feat.geometry;
+    if (!geom) continue;
+    const polys =
+      geom.type === "Polygon"      ? [geom.coordinates]  :
+      geom.type === "MultiPolygon" ?  geom.coordinates   : null;
+    if (!polys) continue;
+
+    for (const rings of polys) {
+      ctx.beginPath();
+      for (const ring of rings) {
+        for (let i = 0; i < ring.length; i++) {
+          // equirectangular: x = (lon+180)/360*width, y = (90-lat)/180*height
+          const px = ((ring[i][0] + 180) / 360) * width;
+          const py = ((90 - ring[i][1]) / 180) * height;
+          i === 0 ? ctx.moveTo(px, py) : ctx.lineTo(px, py);
+        }
+        ctx.closePath();
+      }
+      ctx.fill("evenodd");
+    }
+  }
+
+  const imageData = ctx.getImageData(0, 0, width, height);
+  const tex = new THREE.DataTexture(
+    new Uint8Array(imageData.data),
+    width,
+    height,
+    THREE.RGBAFormat,
+  );
+  tex.wrapS = THREE.ClampToEdgeWrapping;
+  tex.wrapT = THREE.ClampToEdgeWrapping;
+  tex.minFilter = THREE.LinearFilter;
+  tex.magFilter = THREE.LinearFilter;
+  tex.generateMipmaps = false;
+  tex.flipY = true;
+  tex.needsUpdate = true;
+  return tex;
+}
+
+// ─── Sphere mesh helpers ───────────────────────────────────────────────────────
+
+function makeLandMesh(tex) {
+  const r = CONFIG.earthRadius + COUNTRY_BOUNDARY_CONFIG.landAltitudeOffset;
+  const geo = new THREE.SphereGeometry(r, 128, 64);
+  const mat = new THREE.MeshBasicMaterial({
+    color: 0xffffff,
+    map: tex,
+    transparent: COUNTRY_BOUNDARY_CONFIG.landOpacity < 1,
+    opacity: COUNTRY_BOUNDARY_CONFIG.landOpacity,
+    depthTest: true,
+    depthWrite: false,
+  });
+  const mesh = new THREE.Mesh(geo, mat);
+  mesh.name = "country-land-ocean";
+  mesh.renderOrder = COUNTRY_BOUNDARY_CONFIG.landRenderOrder;
+  mesh.visible = false;
+  mesh.raycast = () => {};
+  return mesh;
+}
+
+function makeTintMesh() {
+  const r = CONFIG.earthRadius + COUNTRY_BOUNDARY_CONFIG.tintAltitudeOffset;
+  const geo = new THREE.SphereGeometry(r, 64, 32);
+  const mat = new THREE.MeshBasicMaterial({ color: COUNTRY_BOUNDARY_CONFIG.tintColor, depthWrite: false });
+  const mesh = new THREE.Mesh(geo, mat);
+  mesh.name = "country-tint";
+  mesh.renderOrder = COUNTRY_BOUNDARY_CONFIG.tintRenderOrder;
+  mesh.visible = false;
+  mesh.raycast = () => {};
+  return mesh;
+}
+
+// ─── Boundary line geometry ────────────────────────────────────────────────────
+
+function ringToSegments(ring, radius, out) {
+  const n = ring.length;
+  if (n < 2) return;
+  for (let i = 0; i < n - 1; i++) {
+    out.push(latLonToVector3(ring[i][1],   ring[i][0],   radius));
+    out.push(latLonToVector3(ring[i+1][1], ring[i+1][0], radius));
+  }
+}
+
+function featureToSegments(geom, radius) {
+  const pts = [];
+  if (!geom) return pts;
+  if (geom.type === "Polygon") {
+    geom.coordinates.forEach(ring => ringToSegments(ring, radius, pts));
+  } else if (geom.type === "MultiPolygon") {
+    geom.coordinates.forEach(poly => poly.forEach(ring => ringToSegments(ring, radius, pts)));
+  }
+  return pts;
+}
+
+function buildBoundaryLines(features) {
+  const r   = CONFIG.earthRadius + COUNTRY_BOUNDARY_CONFIG.lineAltitudeOffset;
+  const mat = new THREE.LineBasicMaterial({
+    color: COUNTRY_BOUNDARY_CONFIG.lineColor,
+    transparent: true,
+    opacity: COUNTRY_BOUNDARY_CONFIG.lineOpacity,
+    depthTest: true,
+    depthWrite: false,
+  });
+
+  const all = [];
+  for (const feat of features) {
+    const pts = featureToSegments(feat.geometry, r);
+    all.push(...pts);
+  }
+
+  const geo = all.length > 0
+    ? new THREE.BufferGeometry().setFromPoints(all)
+    : new THREE.BufferGeometry();
+  const lines = new THREE.LineSegments(geo, mat);
+  lines.name = "country-boundary-all";
+  lines.renderOrder = COUNTRY_BOUNDARY_CONFIG.lineRenderOrder;
+  lines.visible = false;
+  lines.raycast = () => {};
+  return lines;
+}
+
+function buildHoverLines() {
+  const mat = new THREE.LineBasicMaterial({
+    color: COUNTRY_BOUNDARY_CONFIG.hoverLineColor,
+    transparent: COUNTRY_BOUNDARY_CONFIG.hoverLineOpacity < 1,
+    opacity: COUNTRY_BOUNDARY_CONFIG.hoverLineOpacity,
+    depthTest: false,
+    depthWrite: false,
+  });
+  const lines = new THREE.LineSegments(new THREE.BufferGeometry(), mat);
+  lines.name = "country-hover";
+  lines.renderOrder = COUNTRY_BOUNDARY_CONFIG.hoverLineRenderOrder;
+  lines.visible = false;
+  lines.raycast = () => {};
+  return lines;
+}
+
+function buildHoverGlowLines() {
+  const mat = new THREE.LineBasicMaterial({
+    color: COUNTRY_BOUNDARY_CONFIG.hoverLineColor,
+    transparent: true,
+    opacity: COUNTRY_BOUNDARY_CONFIG.hoverGlowOpacity,
+    depthTest: false,
+    depthWrite: false,
+    blending: THREE.AdditiveBlending,
+    linewidth: COUNTRY_BOUNDARY_CONFIG.hoverGlowLineWidth,
+  });
+  const lines = new THREE.LineSegments(new THREE.BufferGeometry(), mat);
+  lines.name = "country-hover-glow";
+  lines.renderOrder =
+    COUNTRY_BOUNDARY_CONFIG.hoverLineRenderOrder -
+    COUNTRY_BOUNDARY_CONFIG.hoverGlowRenderOrderOffset;
+  lines.visible = false;
+  lines.raycast = () => {};
+  return lines;
+}
+
+function setBoundaryLinesDimmed(dimmed) {
+  if (!_boundaryLines?.material) return;
+  _boundaryLines.material.opacity = dimmed
+    ? COUNTRY_BOUNDARY_CONFIG.dimmedLineOpacity
+    : COUNTRY_BOUNDARY_CONFIG.lineOpacity;
+  _boundaryLines.material.needsUpdate = true;
+}
+
+function clearHoverLineGeometries() {
+  if (_hoverGlowLines) _hoverGlowLines.geometry.setFromPoints([]);
+  if (_hoverLines) _hoverLines.geometry.setFromPoints([]);
+}
+
+function featureListToSegments(features, radius) {
+  return features.flatMap(f => featureToSegments(f.geometry, radius));
+}
+
+// ─── Point-in-polygon (lat/lon space) ─────────────────────────────────────────
+
+function pointInRing(lat, lon, ring) {
+  let inside = false;
+  const n = ring.length;
+  for (let i = 0, j = n - 1; i < n; j = i++) {
+    const xi = ring[i][0], yi = ring[i][1];
+    const xj = ring[j][0], yj = ring[j][1];
+    if ((yi > lat) !== (yj > lat) && lon < (xj - xi) * (lat - yi) / (yj - yi) + xi) {
+      inside = !inside;
+    }
+  }
+  return inside;
+}
+
+function featureContains(lat, lon, feat) {
+  const geom = feat.geometry;
+  if (!geom) return false;
+  if (geom.type === "Polygon") {
+    if (!pointInRing(lat, lon, geom.coordinates[0])) return false;
+    return geom.coordinates.slice(1).every(h => !pointInRing(lat, lon, h));
+  }
+  if (geom.type === "MultiPolygon") {
+    return geom.coordinates.some(poly =>
+      pointInRing(lat, lon, poly[0]) &&
+      poly.slice(1).every(h => !pointInRing(lat, lon, h))
+    );
+  }
+  return false;
+}
+
+function makeCountryInfo(feat) {
+  if (!feat) return null;
+  const p = feat.properties || {};
+  return {
+    name:      p.NAME_EN || p.NAME || p.ADMIN || "",
+    nameZh:    p.NAME_ZH  || null,
+    isoA3:     p.ISO_A3   || p.ADM0_A3 || null,
+    isoA2:     p.ISO_A2   || null,
+    continent: p.CONTINENT || null,
+  };
+}
+
+function getCountryHighlightGroupKey(feat) {
+  const p = feat?.properties || {};
+  const isoA3 = p.ISO_A3 || p.ADM0_A3 || "";
+  if (isoA3 === "CHN" || isoA3 === "TWN") {
+    return "CHN_TWN";
+  }
+  return isoA3 || p.ISO_A2 || p.NAME_EN || p.NAME || p.ADMIN || null;
+}
+
+function getHighlightFeatures(feat) {
+  const groupKey = getCountryHighlightGroupKey(feat);
+  if (!groupKey) return feat ? [feat] : [];
+  return _features.filter(f => getCountryHighlightGroupKey(f) === groupKey);
+}
+
+// ─── Public API ────────────────────────────────────────────────────────────────
+
+/** Called during init (before data load). Creates the placeholder tint sphere. */
+export function createCountryBoundaryLayer(earthObj) {
+  _earthObj = earthObj;
+  _tintMesh = makeTintMesh();
+  _earthObj.add(_tintMesh);
+}
+
+/** Fetch GeoJSON, build meshes. Idempotent; safe to call multiple times. */
+export async function loadCountryBoundaries() {
+  if (_loaded) return _features.length;
+  if (_loadPromise) return _loadPromise;
+
+  _loadPromise = (async () => {
+    const resp = await fetch(COUNTRY_BOUNDARY_CONFIG.dataPath);
+    if (!resp.ok) throw new Error(`国界数据加载失败 HTTP ${resp.status}`);
+    const geojson = await resp.json();
+    _features = (geojson.features || []).filter(f => f.geometry);
+
+    const tex = buildLandTexture(_features);
+    _landMesh = makeLandMesh(tex);
+    _earthObj.add(_landMesh);
+
+    _boundaryLines = buildBoundaryLines(_features);
+    _earthObj.add(_boundaryLines);
+
+    _hoverGlowLines = buildHoverGlowLines();
+    _earthObj.add(_hoverGlowLines);
+
+    _hoverLines = buildHoverLines();
+    _earthObj.add(_hoverLines);
+
+    _loaded = true;
+    return _features.length;
+  })();
+
+  return _loadPromise;
+}
+
+/** Load if not yet loaded, then return feature count. */
+export async function ensureCountryBoundariesReady() {
+  if (!_loaded) await loadCountryBoundaries();
+  return _features.length;
+}
+
+/**
+ * Show or hide the country boundary lines.
+ * The land/ocean fill is the base earth map and stays independent from this
+ * line visibility switch.
+ * @param {boolean} visible
+ * @param {{ showTint?: boolean, showLandFill?: boolean, suppressLandFill?: boolean }} [opts]
+ *   showLandFill – whether to show the base land/ocean fill.
+ *                  Defaults to the current stored value so callers that only
+ *                  care about visibility don't need to repeat it.
+ *   suppressLandFill – temporarily keep the fill below the high-res texture
+ *                      without changing the layer's own fill state.
+ */
+export function toggleCountryBoundaries(
+  visible,
+  { showTint = false, showLandFill = null, suppressLandFill = null } = {},
+) {
+  _visible = Boolean(visible);
+
+  if (showLandFill !== null) _landFillEnabled = Boolean(showLandFill);
+  if (suppressLandFill !== null) _landFillSuppressed = Boolean(suppressLandFill);
+
+  if (_landMesh) {
+    _landMesh.visible = _landFillEnabled && !_landFillSuppressed;
+  }
+  if (_boundaryLines) _boundaryLines.visible = _visible;
+  if (_hoverGlowLines) _hoverGlowLines.visible = _visible;
+  if (_hoverLines)    _hoverLines.visible    = _visible;
+
+  if (!_visible) {
+    _hoveredFeature = null;
+    _hoveredGroupKey = null;
+    setBoundaryLinesDimmed(false);
+    clearHoverLineGeometries();
+  }
+
+  if (_tintMesh) _tintMesh.visible = _visible && showTint && _tintEnabled;
+}
+
+/**
+ * Show or hide the land/ocean canvas fill independently of boundary lines.
+ */
+export function setLandFillEnabled(enabled) {
+  _landFillEnabled = Boolean(enabled);
+  if (_landMesh) _landMesh.visible = _landFillEnabled && !_landFillSuppressed;
+}
+
+export function setLandFillSuppressed(enabled) {
+  _landFillSuppressed = Boolean(enabled);
+  if (_landMesh) _landMesh.visible = _landFillEnabled && !_landFillSuppressed;
+}
+
+/**
+ * Enable / disable the solid dark tint overlay (used when high-res texture is off).
+ */
+export function setSurfaceTintEnabled(enabled) {
+  _tintEnabled = Boolean(enabled);
+  if (_tintMesh) _tintMesh.visible = _visible && _tintEnabled;
+}
+
+export function getShowCountryBoundaries() {
+  return _visible;
+}
+
+/** Clear the hover highlight without hiding the full layer. */
+export function clearCountryBoundaryHover() {
+  if (!_hoveredFeature) return;
+  _hoveredFeature = null;
+  _hoveredGroupKey = null;
+  setBoundaryLinesDimmed(false);
+  clearHoverLineGeometries();
+}
+
+/**
+ * Update hover highlight for the given lat/lon coords.
+ * Returns a country-info object when hovering over land, or null over ocean.
+ */
+export function updateCountryBoundaryHover(coords) {
+  if (!_loaded || !_visible) return null;
+  const { lat, lon } = coords;
+
+  const found = _features.find(f => featureContains(lat, lon, f)) || null;
+  const groupKey = getCountryHighlightGroupKey(found);
+
+  if (found !== _hoveredFeature || groupKey !== _hoveredGroupKey) {
+    _hoveredFeature = found;
+    _hoveredGroupKey = groupKey;
+    if (_hoverLines) {
+      if (!found) {
+        setBoundaryLinesDimmed(false);
+        clearHoverLineGeometries();
+      } else {
+        setBoundaryLinesDimmed(true);
+        const highlightFeatures = getHighlightFeatures(found);
+        const coreRadius = CONFIG.earthRadius + COUNTRY_BOUNDARY_CONFIG.hoverAltitudeOffset;
+        const glowRadius = coreRadius + COUNTRY_BOUNDARY_CONFIG.hoverGlowRadiusOffset;
+        if (_hoverGlowLines) {
+          const glowPts = featureListToSegments(highlightFeatures, glowRadius);
+          _hoverGlowLines.geometry.setFromPoints(glowPts);
+        }
+        const corePts = featureListToSegments(highlightFeatures, coreRadius);
+        _hoverLines.geometry.setFromPoints(corePts);
+      }
+    }
+  }
+
+  return found ? makeCountryInfo(found) : null;
+}
+
+/** Dispose all Three.js objects and reset state. */
+export function clearCountryBoundaryData() {
+  _hoveredFeature = null;
+  _hoveredGroupKey = null;
+
+  function disposeObj(obj) {
+    if (!obj) return;
+    if (_earthObj) _earthObj.remove(obj);
+    obj.geometry?.dispose();
+    if (obj.material) {
+      if (obj.material.map) obj.material.map.dispose();
+      obj.material.dispose();
+    }
+  }
+
+  disposeObj(_hoverLines);
+  disposeObj(_hoverGlowLines);
+  disposeObj(_boundaryLines);
+  disposeObj(_landMesh);
+  disposeObj(_tintMesh);
+
+  _hoverLines      = null;
+  _hoverGlowLines  = null;
+  _boundaryLines   = null;
+  _landMesh        = null;
+  _tintMesh        = null;
+  _features        = [];
+  _loaded          = false;
+  _loadPromise     = null;
+  _visible         = false;
+  _landFillEnabled = true;
+  _landFillSuppressed = false;
+  _tintEnabled     = false;
+}
+
+export function getCountryBoundaryLegendItems() {
+  return [
+    { color: hexToStyle(COUNTRY_BOUNDARY_CONFIG.lineColor), label: "国界线" },
+    { color: hexToStyle(COUNTRY_BOUNDARY_CONFIG.landColor), label: "陆地填色" },
+    { color: hexToStyle(OCEAN_HEX), label: "海洋填色" },
+  ];
+}
--- a/frontend/public/earth/js/earth.js
+++ b/frontend/public/earth/js/earth.js
@@ -1,18 +1,31 @@
 // earth.js - 3D Earth creation module

 import * as THREE from 'three';
-import { CONFIG, EARTH_CONFIG, EARTH_MATERIAL_CONFIG, TERRAIN_CONFIG } from './constants.js';
+import {
+  CLOUD_LAYER_CONFIG,
+  CONFIG,
+  EARTH_CONFIG,
+  EARTH_MATERIAL_CONFIG,
+  GRID_CONFIG,
+  STARFIELD_CONFIG,
+  TERRAIN_CONFIG,
+} from './constants.js';
 import { latLonToVector3 } from './utils.js';

 export let earth = null;
 export let clouds = null;
 export let terrain = null;
-let showGridLines = true;
+let showGridLines = false;
+let showClouds = true;

 const textureLoader = new THREE.TextureLoader();
 let _earthMaterial = null;
+let _earthTextureOverlay = null;
+let _earthTextureOverlayMaterial = null;
 let _earthShader = null;
 let _dayNightEnabled = true;
+let _loadedTexture = null;
+let _textureVisible = true;
 const _earthSunDirection = new THREE.Vector3(
  EARTH_MATERIAL_CONFIG.dayNight.sunDirection.x,
  EARTH_MATERIAL_CONFIG.dayNight.sunDirection.y,
@@ -103,7 +116,7 @@ export function createEarth(scene) {
    specular: C.specular,
    shininess: C.shininess,
    emissive: C.emissive,
-    transparent: true,
+    transparent: C.opacity < 1,
    opacity: C.opacity,
    side: THREE.FrontSide,
    depthWrite: true,
@@ -117,6 +130,30 @@ export function createEarth(scene) {
  earth.rotation.x = EARTH_CONFIG.tiltRad;
  scene.add(earth);

+  const textureOverlayGeometry = new THREE.SphereGeometry(
+    CONFIG.earthRadius + C.textureOverlayAltitudeOffset,
+    128,
+    128,
+  );
+  _earthTextureOverlayMaterial = new THREE.MeshPhongMaterial({
+    color: 0xffffff,
+    specular: C.specular,
+    shininess: C.shininess,
+    transparent: true,
+    opacity: C.textureOverlayOpacity,
+    side: THREE.FrontSide,
+    depthWrite: false,
+    depthTest: true,
+  });
+  _earthTextureOverlay = new THREE.Mesh(
+    textureOverlayGeometry,
+    _earthTextureOverlayMaterial,
+  );
+  _earthTextureOverlay.name = "earth-high-res-texture-overlay";
+  _earthTextureOverlay.renderOrder = C.textureOverlayRenderOrder;
+  _earthTextureOverlay.visible = false;
+  earth.add(_earthTextureOverlay);
+
  // Depth-mask occluder — invisible sphere slightly inside the earth,
  // writes to the depth buffer so far-side cables/satellites are occluded.
  const occluderGeometry = new THREE.SphereGeometry(
@@ -198,10 +235,14 @@ export function createEarth(scene) {
 }

 export function createClouds(scene, earthObj) {
-  const geometry = new THREE.SphereGeometry(CONFIG.earthRadius + 3, 64, 64);
+  const geometry = new THREE.SphereGeometry(
+    CONFIG.earthRadius + CLOUD_LAYER_CONFIG.radiusOffset,
+    CLOUD_LAYER_CONFIG.widthSegments,
+    CLOUD_LAYER_CONFIG.heightSegments,
+  );
  const material = new THREE.MeshPhongMaterial({
    transparent: true,
-    opacity: 0.15,
+    opacity: CLOUD_LAYER_CONFIG.opacity,
    depthTest: true,
    depthWrite: false,
    blending: THREE.AdditiveBlending,
@@ -209,10 +250,12 @@ export function createClouds(scene, earthObj) {
  });
  
  clouds = new THREE.Mesh(geometry, material);
+  clouds.name = "earth-atmosphere-clouds";
+  clouds.visible = showClouds;
  earthObj.add(clouds);
  
  textureLoader.load(
-    './assets/earth_clouds_1024.png',
+    CLOUD_LAYER_CONFIG.textureUrl,
    function(texture) {
      material.map = texture;
      material.needsUpdate = true;
@@ -226,6 +269,17 @@ export function createClouds(scene, earthObj) {
  return clouds;
 }

+export function toggleClouds(visible) {
+  showClouds = Boolean(visible);
+  if (clouds) {
+    clouds.visible = showClouds;
+  }
+}
+
+export function getShowClouds() {
+  return showClouds;
+}
+
 export function createTerrain(earthObj) {
  const geometry = new THREE.SphereGeometry(
    CONFIG.earthRadius + TERRAIN_CONFIG.baseRadiusOffset,
@@ -251,7 +305,8 @@ export function createTerrain(earthObj) {
  terrain = new THREE.Mesh(geometry, material);
  terrain.name = "earth-real-terrain";
  terrain.visible = false;
-  terrain.renderOrder = 0.5;
+  terrain.renderOrder = 1.2;
+  terrain.raycast = () => {};
  earthObj.add(terrain);

  return terrain;
@@ -265,11 +320,11 @@ export function toggleTerrain(visible) {

 export function createStars(scene) {
  const starGeometry = new THREE.BufferGeometry();
-  const starCount = 8000;
+  const starCount = STARFIELD_CONFIG.count;
  const starPositions = new Float32Array(starCount * 3);
  
  for (let i = 0; i < starCount * 3; i += 3) {
-    const r = 800 + Math.random() * 200;
+    const r = STARFIELD_CONFIG.minRadius + Math.random() * STARFIELD_CONFIG.radiusJitter;
    const theta = Math.random() * Math.PI * 2;
    const phi = Math.acos(2 * Math.random() - 1);
    
@@ -281,8 +336,8 @@ export function createStars(scene) {
  starGeometry.setAttribute('position', new THREE.BufferAttribute(starPositions, 3));
  
  const starMaterial = new THREE.PointsMaterial({
-    color: 0xffffff,
-    size: 0.5,
+    color: STARFIELD_CONFIG.color,
+    size: STARFIELD_CONFIG.size,
    transparent: true,
    blending: THREE.AdditiveBlending
  });
@@ -302,17 +357,19 @@ export function createGridLines(scene, earthObj) {
  latitudeLines = [];
  longitudeLines = [];
  
-  const earthRadius = 100.1;
+  const earthRadius = CONFIG.earthRadius + GRID_CONFIG.radiusOffset;
  const gridMaterial = new THREE.LineBasicMaterial({
-    color: 0x44aaff,
+    color: GRID_CONFIG.color,
    transparent: true,
-    opacity: 0.2,
-    linewidth: 1
+    opacity: GRID_CONFIG.opacity,
+    linewidth: GRID_CONFIG.lineWidth,
+    depthTest: true,
+    depthWrite: false,
  });
  
-  for (let lat = -75; lat <= 75; lat += 15) {
+  for (let lat = -75; lat <= 75; lat += GRID_CONFIG.latitudeStep) {
    const points = [];
-    for (let lon = -180; lon <= 180; lon += 5) {
+    for (let lon = -180; lon <= 180; lon += GRID_CONFIG.segmentStep) {
      const point = latLonToVector3(lat, lon, earthRadius);
      points.push(point);
    }
@@ -320,14 +377,15 @@ export function createGridLines(scene, earthObj) {
    const geometry = new THREE.BufferGeometry().setFromPoints(points);
    const line = new THREE.Line(geometry, gridMaterial);
    line.userData = { type: 'latitude', value: lat };
+    line.renderOrder = GRID_CONFIG.renderOrder;
    line.visible = showGridLines;
    earthObj.add(line);
    latitudeLines.push(line);
  }
  
-  for (let lon = -180; lon <= 180; lon += 30) {
+  for (let lon = -180; lon <= 180; lon += GRID_CONFIG.longitudeStep) {
    const points = [];
-    for (let lat = -90; lat <= 90; lat += 5) {
+    for (let lat = -90; lat <= 90; lat += GRID_CONFIG.segmentStep) {
      const point = latLonToVector3(lat, lon, earthRadius);
      points.push(point);
    }
@@ -335,6 +393,7 @@ export function createGridLines(scene, earthObj) {
    const geometry = new THREE.BufferGeometry().setFromPoints(points);
    const line = new THREE.Line(geometry, gridMaterial);
    line.userData = { type: 'longitude', value: lon };
+    line.renderOrder = GRID_CONFIG.renderOrder;
    line.visible = showGridLines;
    earthObj.add(line);
    longitudeLines.push(line);
@@ -359,14 +418,23 @@ export function getEarth() {
  return earth;
 }

+export function getEarthSurfacePickTarget() {
+  return _earthTextureOverlay?.visible ? _earthTextureOverlay : earth;
+}
+
 export function getClouds() {
  return clouds;
 }

 export function clearEarthTexture() {
-  if (!_earthMaterial) return;
-  _earthMaterial.map = null;
-  _earthMaterial.needsUpdate = true;
+  _loadedTexture = null;
+  if (_earthTextureOverlayMaterial) {
+    _earthTextureOverlayMaterial.map = null;
+    _earthTextureOverlayMaterial.needsUpdate = true;
+  }
+  if (_earthTextureOverlay) {
+    _earthTextureOverlay.visible = false;
+  }
 }

 export function setEarthSunDirection(direction) {
@@ -390,10 +458,9 @@ export function setDayNightEnabled(enabled) {
      _earthMaterial.emissiveMap = null;
    } else {
      // Full bright: zero diffuse so directional light has no effect;
-      // use original color as emissive map to show texture uniformly.
      _earthMaterial.color.setRGB(0, 0, 0);
      _earthMaterial.emissive.setHex(EARTH_MATERIAL_CONFIG.color);
-      _earthMaterial.emissiveMap = _earthMaterial.map;
+      _earthMaterial.emissiveMap = null;
    }
    _earthMaterial.needsUpdate = true;
  }
@@ -401,7 +468,7 @@ export function setDayNightEnabled(enabled) {

 export function loadEarthTexture() {
  return new Promise((resolve) => {
-    if (!_earthMaterial) { resolve(); return; }
+    if (!_earthTextureOverlayMaterial) { resolve(); return; }

    const urls = EARTH_MATERIAL_CONFIG.textureUrls;
    const tryLoad = (index) => {
@@ -418,12 +485,12 @@ export function loadEarthTexture() {
          texture.anisotropy = 16;
          texture.minFilter = THREE.LinearMipmapLinearFilter;
          texture.magFilter = THREE.LinearFilter;
-          _earthMaterial.map = texture;
-          // If day/night is currently disabled, sync emissiveMap to the newly loaded texture
-          if (!_dayNightEnabled) {
-            _earthMaterial.emissiveMap = texture;
+          _loadedTexture = texture;
+          _earthTextureOverlayMaterial.map = texture;
+          _earthTextureOverlayMaterial.needsUpdate = true;
+          if (_earthTextureOverlay) {
+            _earthTextureOverlay.visible = _textureVisible;
          }
-          _earthMaterial.needsUpdate = true;
          resolve();
        },
        null,
@@ -433,3 +500,18 @@ export function loadEarthTexture() {
    tryLoad(0);
  });
 }
+
+export function setEarthTextureVisible(visible) {
+  _textureVisible = Boolean(visible);
+  if (_earthTextureOverlay) {
+    _earthTextureOverlay.visible = _textureVisible && Boolean(_loadedTexture);
+  }
+  if (_earthTextureOverlayMaterial) {
+    _earthTextureOverlayMaterial.map = _loadedTexture || null;
+    _earthTextureOverlayMaterial.needsUpdate = true;
+  }
+}
+
+export function getEarthTextureVisible() {
+  return _textureVisible;
+}
--- a/frontend/public/earth/js/layer-button-state.js
+++ b/frontend/public/earth/js/layer-button-state.js
@@ -23,12 +23,14 @@ export function setLayerButtonState(button, options = {}) {
  const {
    active = null,
    loading = false,
+    disabled = null,
    tooltip = null,
    statusText = null,
  } = options;
  button.classList.toggle("is-loading", loading);
  button.toggleAttribute("aria-busy", loading);
-  button.disabled = loading;
+  button.disabled = loading || (disabled === true);
+  button.classList.toggle("is-disabled", disabled === true);
  if (typeof active === "boolean") {
    updateLayerButtonState(button, active);
  }
--- a/frontend/public/earth/js/layer-startup-tasks.js
+++ b/frontend/public/earth/js/layer-startup-tasks.js
@@ -18,6 +18,11 @@ import {
  loadComputeCenters,
  toggleComputeCenters,
 } from "./compute-centers.js";
+import {
+  getCountryBoundaryLegendItems,
+  loadCountryBoundaries,
+  toggleCountryBoundaries,
+} from "./country-boundaries.js";

 /**
 * Layer startup task registry.
@@ -72,10 +77,11 @@ export function registerLayerStartupTask(id, taskFactory) {

 function registerBuiltinLayerStartupTasks() {
  startupTaskRegistry.clear();
+  registerCountryBoundaryStartupTask();
  registerCableStartupTask();
-  registerSatelliteStartupTask();
  registerComputeCenterStartupTask();
  registerBGPStartupTask();
+  registerSatelliteStartupTask();
 }

 function registerCableStartupTask() {
@@ -176,6 +182,32 @@ function registerBGPStartupTask() {
  });
 }

+function registerCountryBoundaryStartupTask() {
+  registerLayerStartupTask("countryBoundaries", (context) => async (layer) => {
+    context.setLoadingMessage(
+      resolveStartupMessage(layer, "load", "正在加载海陆基座..."),
+    );
+    await context.yieldFrame(12);
+    try {
+      await loadCountryBoundaries();
+      if (!context.isCancelled()) {
+        const textureOn = context.isEarthTextureVisible();
+        toggleCountryBoundaries(context.getShowCountryBoundaries(), {
+          showTint: !textureOn,
+          showLandFill: true,
+          suppressLandFill: false,
+        });
+        context.setLegendItems("countryBoundaries", getCountryBoundaryLegendItems());
+        context.refreshLegend();
+      }
+    } catch (error) {
+      context.reportError(layer?.startupLabel || layer?.label || "国界", error);
+    }
+    if (context.isCancelled()) return;
+    await context.yieldFrame(16);
+  });
+}
+
 function registerComputeCenterStartupTask() {
  registerLayerStartupTask("computeCenters", (context) => async (layer) => {
    context.setLoadingMessage(
--- a/frontend/public/earth/js/legend.js
+++ b/frontend/public/earth/js/legend.js
@@ -3,6 +3,7 @@ import { createHUDPanel } from "./hud-panels.js";
 const LEGEND_MODES = {
  cables:         { title: "海缆" },
  satellites:     { title: "卫星" },
+  countryBoundaries: { title: "国界" },
  computeCenters: { title: "算力" },
  bgp:            { title: "BGP" },
 };
@@ -12,6 +13,7 @@ let legendPanel = null;
 let legendItemsByMode = {
  cables: [],
  satellites: [],
+  countryBoundaries: [],
  computeCenters: [],
  bgp: [],
 };
--- a/frontend/public/earth/js/main.js
+++ b/frontend/public/earth/js/main.js
@@ -33,11 +33,17 @@ import {
  createEarth,
  createClouds,
  createTerrain,
+  getShowClouds,
  createGridLines,
  getEarth,
+  getEarthSurfacePickTarget,
  loadEarthTexture,
  clearEarthTexture,
  setEarthSunDirection,
+  setEarthTextureVisible,
+  getEarthTextureVisible,
+  toggleClouds,
+  toggleTerrain,
 } from "./earth.js";
 import { registerTerrainMesh, clearTerrainData, sampleElevationAt } from "./terrain.js";
 import {
@@ -50,6 +56,19 @@ import {
  setCelestialFollow,
  setCelestialDayNightEnabled,
 } from "./celestial.js";
+import {
+  clearCountryBoundaryData,
+  clearCountryBoundaryHover,
+  createCountryBoundaryLayer,
+  ensureCountryBoundariesReady,
+  getCountryBoundaryLegendItems,
+  getShowCountryBoundaries,
+  setLandFillEnabled,
+  setLandFillSuppressed,
+  setSurfaceTintEnabled,
+  toggleCountryBoundaries,
+  updateCountryBoundaryHover,
+} from "./country-boundaries.js";
 import {
  loadGeoJSONFromPath,
  loadLandingPoints,
@@ -162,6 +181,10 @@ import {
  getZoomLevel,
  setZoomLevel,
  teardownControls,
+  getDayNightEnabled,
+  setDayNightEnabledExternal,
+  setTerrainLayerInteractable,
+  setDayNightInteractable,
 } from "./controls.js";
 import {
  createLayerStartupTaskMap,
@@ -227,7 +250,7 @@ let destroyed = false;
 let isDataLoading = false;
 let currentLoadToken = 0;
 let cablesEnabled = true;
-let satellitesEnabled = true;
+let satellitesEnabled = false;
 let cableToggleToken = 0;
 let satelliteToggleToken = 0;
 let satelliteHydrationToken = 0;
@@ -254,6 +277,8 @@ const scratchBGPDirection = new THREE.Vector3();
 const scratchBGPWorldPosition = new THREE.Vector3();
 const scratchComputeCenterDirection = new THREE.Vector3();
 const scratchComputeCenterWorldPosition = new THREE.Vector3();
+const scratchSatelliteWorldPosition = new THREE.Vector3();
+const scratchSatelliteScreenPosition = new THREE.Vector3();
 const scratchViewCenterWorld = new THREE.Vector3();

 const cleanupFns = [];
@@ -472,6 +497,7 @@ function resetTransientComputeCenterStates() {
 function clearTransientHoverState() {
  resetTransientBGPStates();
  resetTransientComputeCenterStates();
+  clearCountryBoundaryHover();
  hoveredBGP = null;
  hoveredComputeCenter = null;

@@ -648,6 +674,13 @@ function getComputeCenterBriefHtml(marker) {
  return `<strong>${name}</strong><br>${type}${location ? ` · ${location}` : ""}${precision}`;
 }

+function getCountryBoundaryBriefHtml(country) {
+  const name = country?.nameZh || country?.name || "未知国家";
+  const code = country?.isoA3 || country?.isoA2 || "-";
+  const continent = country?.continent || "-";
+  return `<strong>${name}</strong><br>ISO: ${code}<br>大洲: ${continent}`;
+}
+
 function showBGPInfo(marker, coords) {
  setLegendMode("bgp");
  const impactedRegions =
@@ -1216,11 +1249,11 @@ function getBGPStatusText(bgpResult) {
 function updateComputeCenterHud(computeCenterResult) {
  const computeBtn = document.getElementById("toggle-compute-centers");
  if (computeBtn) {
-    computeBtn.classList.add("active");
-    const tooltip = computeBtn.querySelector(".earth-toolbar-tooltip");
-    if (tooltip) {
-      tooltip.textContent = "隐藏算力中心";
-    }
+    setLayerButtonState(computeBtn, {
+      active: getShowComputeCenters(),
+      loading: false,
+      tooltip: getShowComputeCenters() ? "隐藏算力中心" : "显示算力中心",
+    });
  }

  setEarthStatValue("compute-center-count", `${computeCenterResult.totalCount} 个`);
@@ -1229,11 +1262,11 @@ function updateComputeCenterHud(computeCenterResult) {
 function updateBGPHud(bgpResult) {
  const bgpBtn = document.getElementById("toggle-bgp");
  if (bgpBtn) {
-    bgpBtn.classList.add("active");
-    const tooltip = bgpBtn.querySelector(".earth-toolbar-tooltip");
-    if (tooltip) {
-      tooltip.textContent = ACTIVE_BGP_TOOLTIP_TEXT;
-    }
+    setLayerButtonState(bgpBtn, {
+      active: getShowBGP(),
+      loading: false,
+      tooltip: getShowBGP() ? ACTIVE_BGP_TOOLTIP_TEXT : "显示BGP观测",
+    });
  }

  setEarthStatValue("bgp-anomaly-count", `${bgpResult.totalCount} 起`);
@@ -1780,6 +1813,58 @@ function updatePointerFromEvent(event) {
  interactionRaycaster.setFromCamera(interactionMouse, camera);
 }

+function getSatellitePointerIntersections(event) {
+  if (!renderer || !camera || !getShowSatellites()) return [];
+
+  const satPoints = getSatellitePoints();
+  const satPositions = getSatellitePositions();
+  if (!satPoints?.visible || !Array.isArray(satPositions) || satPositions.length === 0) {
+    return [];
+  }
+
+  const rect = renderer.domElement.getBoundingClientRect();
+  const dpr = window.devicePixelRatio || 1;
+  const shaderSize = satPoints.material?.uniforms?.size?.value;
+  const dotSizePx = Number.isFinite(shaderSize)
+    ? shaderSize / dpr
+    : SATELLITE_CONFIG.dotBaseSize;
+  const pickRadiusPx = Math.max(12, Math.min(30, dotSizePx * 4));
+  const pickRadiusSq = pickRadiusPx * pickRadiusPx;
+  const hits = [];
+
+  satPoints.updateMatrixWorld(true);
+  camera.updateMatrixWorld(true);
+
+  const satelliteCount = Math.min(getSatelliteData().length, satPositions.length);
+  for (let index = 0; index < satelliteCount; index++) {
+    const position = satPositions[index]?.current;
+    if (!position || !isSatelliteFrontFacing(index, camera)) continue;
+
+    scratchSatelliteWorldPosition.copy(position).applyMatrix4(satPoints.matrixWorld);
+    scratchSatelliteScreenPosition.copy(scratchSatelliteWorldPosition).project(camera);
+    if (
+      scratchSatelliteScreenPosition.z < -1 ||
+      scratchSatelliteScreenPosition.z > 1
+    ) {
+      continue;
+    }
+
+    const screenX =
+      rect.left + (scratchSatelliteScreenPosition.x * 0.5 + 0.5) * rect.width;
+    const screenY =
+      rect.top + (-scratchSatelliteScreenPosition.y * 0.5 + 0.5) * rect.height;
+    const dx = screenX - event.clientX;
+    const dy = screenY - event.clientY;
+    const distanceSq = dx * dx + dy * dy;
+    if (distanceSq <= pickRadiusSq) {
+      hits.push({ index, distanceSq });
+    }
+  }
+
+  hits.sort((a, b) => a.distanceSq - b.distanceSq);
+  return hits;
+}
+
 function buildLoadErrorMessage(errors) {
  if (errors.length === 0) return "";
  return errors
@@ -1922,6 +2007,7 @@ function disableSatellites() {
  satellitesEnabled = false;
  satelliteToggleToken += 1;
  satelliteHydrationToken += 1;
+  toggleSatellites(false);
  resetSatelliteState();
  updateSatelliteToggleUi(false, 0);
  setLegendItems("satellites", getSatelliteLegendItems());
@@ -2002,6 +2088,7 @@ export function init() {
  initLegend();
  setLegendItems("cables", getCableLegendItems());
  setLegendItems("satellites", getSatelliteLegendItems());
+  setLegendItems("countryBoundaries", getCountryBoundaryLegendItems());
  setLegendItems("computeCenters", getComputeCenterLegendItems());
  setLegendItems("bgp", getBGPLegendItems());
  const earthObj = createEarth(scene);
@@ -2023,15 +2110,28 @@ export function init() {
  });
  setCelestialDayNightEnabled(true);
  createGridLines(scene, earthObj);
+  createCountryBoundaryLayer(earthObj);
  createSatellites(scene, earthObj);

-  setupControls(camera, renderer, scene, earthObj);
-  setupEventListeners();
-
-  clock.start();
-  loadData();
-  animate();
-  registerGlobalApi();
+  setupControls(camera, renderer, scene, earthObj)
+    .catch((error) => {
+      console.error("初始化 Earth 控制项失败:", error);
+      void reportEarthClientLog({
+        level: "error",
+        category: "init",
+        module: "controls",
+        message: `初始化 Earth 控制项失败: ${error?.message || String(error)}`,
+        detail: error,
+      });
+    })
+    .finally(() => {
+      if (destroyed) return;
+      setupEventListeners();
+      clock.start();
+      loadData();
+      animate();
+      registerGlobalApi();
+    });
 }

 function registerGlobalApi() {
@@ -2162,6 +2262,7 @@ async function loadData() {
  clearCableData(earth);
  clearComputeCenterData(earth);
  clearSatelliteData();
+  clearCountryBoundaryHover();

  setLoadingMessage("正在初始化...");
  setLoading(true);
@@ -2194,7 +2295,9 @@ async function loadData() {
    updateComputeCenterHud,
    updateBGPHud,
    getShowComputeCenters,
+    getShowCountryBoundaries,
    getShowBGP,
+    isEarthTextureVisible: () => getEarthTextureVisible(),
    getInitialSatelliteLoadLimit,
    shouldHydrateFullSatelliteSet,
    scheduleSatellitePositionWarmup,
@@ -2247,6 +2350,7 @@ async function loadData() {
  updateSatelliteToggleUi(satellitesEnabled);
  setLegendItems("cables", getCableLegendItems());
  setLegendItems("satellites", getSatelliteLegendItems());
+  setLegendItems("countryBoundaries", getCountryBoundaryLegendItems());
  setLegendItems("computeCenters", getComputeCenterLegendItems());
  setLegendItems("bgp", getBGPLegendItems());
  refreshLegend();
@@ -2338,6 +2442,102 @@ export async function setCablesEnabled(
  }
 }

+export async function setCountryBoundariesEnabled(
+  enabled,
+  { suppressStatus = false } = {},
+) {
+  if (!enabled) {
+    toggleCountryBoundaries(false);
+    clearCountryBoundaryHover();
+    if (!suppressStatus) {
+      showStatusMessage("国界已隐藏", "info");
+    }
+    return 0;
+  }
+
+  try {
+    const countryCount = await ensureCountryBoundariesReady();
+    const textureOn = getEarthTextureVisible();
+    toggleCountryBoundaries(true, {
+      showTint: !textureOn,
+      showLandFill: true,
+      suppressLandFill: false,
+    });
+    setLegendItems("countryBoundaries", getCountryBoundaryLegendItems());
+    refreshLegend();
+    if (!suppressStatus) {
+      showStatusMessage("国界已显示", "info");
+    }
+    return countryCount;
+  } catch (error) {
+    toggleCountryBoundaries(false);
+    clearCountryBoundaryHover();
+    const message = `国界加载失败: ${error?.message || String(error)}`;
+    void reportEarthClientLog({
+      level: "error",
+      category: "layer-toggle",
+      module: "country-boundaries",
+      message,
+      detail: error,
+    });
+    if (!suppressStatus) {
+      showStatusMessage(message, "error");
+    }
+    throw error;
+  }
+}
+
+let _dayNightBeforeTextureOff = null;
+let _terrainBeforeTextureOff = null;
+
+export function setHighResTextureEnabled(enabled, { suppressStatus = false } = {}) {
+  setEarthTextureVisible(enabled);
+  setSurfaceTintEnabled(!enabled);
+  setLandFillEnabled(true);
+  setLandFillSuppressed(false);
+  setTerrainLayerInteractable(enabled);
+  setDayNightInteractable(enabled);
+  if (!enabled) {
+    if (_terrainBeforeTextureOff === null) {
+      _terrainBeforeTextureOff = getShowTerrain();
+    }
+    toggleTerrain(false);
+    if (_dayNightBeforeTextureOff === null) {
+      _dayNightBeforeTextureOff = getDayNightEnabled();
+    }
+    setDayNightEnabledExternal(false, { persist: false });
+  } else {
+    if (_terrainBeforeTextureOff !== null) {
+      toggleTerrain(_terrainBeforeTextureOff);
+      _terrainBeforeTextureOff = null;
+    }
+    if (_dayNightBeforeTextureOff !== null) {
+      setDayNightEnabledExternal(_dayNightBeforeTextureOff, { persist: false });
+      _dayNightBeforeTextureOff = null;
+    }
+  }
+  if (!suppressStatus) {
+    showStatusMessage(enabled ? "高清材质已启用" : "高清材质已隐藏", "info");
+  }
+  return enabled;
+}
+
+export function getHighResTextureEnabled() {
+  return getEarthTextureVisible();
+}
+
+export function setAtmosphereCloudsEnabled(enabled, { suppressStatus = false } = {}) {
+  toggleClouds(enabled);
+  if (!suppressStatus) {
+    showStatusMessage(enabled ? "大气云图已显示" : "大气云图已隐藏", "info");
+  }
+  return enabled;
+}
+
+export function getAtmosphereCloudsEnabled() {
+  return getShowClouds();
+}
+
 export async function setSatellitesEnabled(
  enabled,
  { suppressStatus = false, suppressLoadingUi = false } = {},
@@ -2561,6 +2761,7 @@ function onMouseMove(event) {
    inertialVelocity.y = rotationDeltaY;
    inertialVelocity.x = rotationDeltaX;
    previousMousePosition = { x: event.clientX, y: event.clientY };
+    clearCountryBoundaryHover();
    hideTooltip();
    return;
  }
@@ -2590,18 +2791,11 @@ function onMouseMove(event) {

  let hoveredSat = null;
  let hoveredSatIndexFromIntersect = null;
-  if (getShowSatellites()) {
-    const satPoints = getSatellitePoints();
-    if (satPoints) {
-      const satIntersects = interactionRaycaster.intersectObject(satPoints);
-      if (satIntersects.length > 0) {
-        const satIndex = satIntersects[0].index;
-        if (isSatelliteFrontFacing(satIndex, camera)) {
-          hoveredSatIndexFromIntersect = satIndex;
-          hoveredSat = selectSatellite(satIndex);
-        }
-      }
-    }
+  const satIntersects = getSatellitePointerIntersections(event);
+  if (satIntersects.length > 0) {
+    const satIndex = satIntersects[0].index;
+    hoveredSatIndexFromIntersect = satIndex;
+    hoveredSat = selectSatellite(satIndex);
  }

  const hoveredBGPMarker = getPrimaryBGPHoverTarget(
@@ -2706,7 +2900,7 @@ function onMouseMove(event) {
      event.clientX,
      event.clientY,
      camera,
-      earth,
+      getEarthSurfacePickTarget() || earth,
      document.body,
      interactionRaycaster,
      interactionMouse,
@@ -2714,6 +2908,18 @@ function onMouseMove(event) {
    if (earthPoint) {
      const coords = vector3ToLatLon(earthPoint);
      updateCoordinatesDisplay(coords.lat, coords.lon, coords.alt);
+      const hoveredCountry = getShowCountryBoundaries()
+        ? updateCountryBoundaryHover(coords)
+        : null;
+      if (hoveredCountry) {
+        showTooltip(
+          event.clientX + TOOLTIP_CURSOR_OFFSET,
+          event.clientY + TOOLTIP_CURSOR_OFFSET,
+          getCountryBoundaryBriefHtml(hoveredCountry),
+        );
+        return;
+      }
+      clearCountryBoundaryHover();
      const elevMeters = sampleElevationAt(coords.lat, coords.lon);
      const elevText = elevMeters !== null
        ? elevMeters >= 1000
@@ -2726,8 +2932,11 @@ function onMouseMove(event) {
        `纬度: ${coords.lat}°<br>经度: ${coords.lon}°<br>海拔: ${elevText}`,
      );
    } else {
+      clearCountryBoundaryHover();
      hideTooltip();
    }
+  } else {
+    clearCountryBoundaryHover();
  }
 }

@@ -2864,6 +3073,7 @@ function onPointerUp(event) {
 }

 function onMouseLeave() {
+  clearCountryBoundaryHover();
  hideTooltip();
 }

@@ -2898,9 +3108,7 @@ function onClick(event) {
        getFrontFacingComputeCenterMarkers(getComputeCenterMarkers()),
      )
    : [];
-  const satIntersects = getShowSatellites()
-    ? interactionRaycaster.intersectObject(getSatellitePoints())
-    : [];
+  const satIntersects = getSatellitePointerIntersections(event);

  const clickedBGPMarker = getShowBGP()
    ? getPrimaryBGPClickTarget(event, bgpAnomalyIntersects, bgpCollectorIntersects)
@@ -2996,9 +3204,7 @@ function onClick(event) {
    const clickX = event.clientX;
    const clickY = event.clientY;

-    const frontFacingSats = satIntersects.filter((sat) =>
-      isSatelliteFrontFacing(sat.index, camera),
-    );
+    const frontFacingSats = satIntersects;
    if (frontFacingSats.length === 0) return;

    let selectedIndex = frontFacingSats[0].index;
@@ -3191,6 +3397,7 @@ export function destroy() {
  clearCableData(getEarth());
  clearBGPData(getEarth());
  clearComputeCenterData(getEarth());
+  clearCountryBoundaryData();
  resetSatelliteState();
  clearUiState();
  disposeCelestialLayer();
--- a/frontend/public/earth/js/satellites.js
+++ b/frontend/public/earth/js/satellites.js
@@ -42,6 +42,8 @@ let satelliteCapacity = 0;
 let satelliteSatrecCache = new Map();
 let satelliteDisplayStyle = DEFAULT_SATELLITE_DISPLAY_STYLE;

+const GROUND_FOOTPRINT_RENDER_ORDER = 3;
+
 const SATELLITE_FOOTPRINT_POLICIES = Object.freeze({
  NONE: "none",
  STARLINK_GROUND_FOOTPRINT: "starlink_ground_footprint",
@@ -1560,7 +1562,7 @@ function createGroundFootprintMaterial() {
  return new THREE.ShaderMaterial({
    transparent: true,
    side: THREE.DoubleSide,
-    depthTest: false,
+    depthTest: true,
    depthWrite: false,
    uniforms: {
      uColor: { value: new THREE.Color(0xffffff) },
@@ -2126,6 +2128,7 @@ function showGroundFootprintStyle(position) {
    createGroundFootprintMaterial(),
  );
  fill.name = "footprint-fill";
+  fill.renderOrder = GROUND_FOOTPRINT_RENDER_ORDER;
  lockedGroundFootprintMesh.add(fill);
  earthObjRef.add(lockedGroundFootprintMesh);
  updateGroundFootprintTransform(position);