feat: Update images with Unsplash (hero + illustrations), fix UX/UI, add animations

- Replace MiniMax images with Unsplash (free commercial use)
- Hero images: marketing, AI automation, tech consult, web dev, about-us
- Illustrations: different from heroes for all 4 service pages
- Fix ตัวอย่างการใช้งาน section on marketing-automation
- Update about-us with hero image
- All images stored locally (not hotlinks)

package-lock.json

@@ -10,6 +10,7 @@
       "dependencies": {
         "@astrojs/db": "^0.20.0",
         "@astrojs/node": "^9.5.4",
+        "@astrojs/sitemap": "^3.7.2",
         "@tailwindcss/vite": "^4.2.1",
         "astro": "^5.17.1",
         "astro-consent": "^1.0.17",
@@ -262,6 +263,26 @@
         "node": "18.20.8 || ^20.3.0 || >=22.0.0"
       }
     },
+    "node_modules/@astrojs/sitemap": {
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/@astrojs/sitemap/-/sitemap-3.7.2.tgz",
+      "integrity": "sha512-PqkzkcZTb5ICiyIR8VoKbIAP/laNRXi5tw616N1Ckk+40oNB8Can1AzVV56lrbC5GKSZFCyJYUVYqVivMisvpA==",
+      "license": "MIT",
+      "dependencies": {
+        "sitemap": "^9.0.0",
+        "stream-replace-string": "^2.0.0",
+        "zod": "^4.3.6"
+      }
+    },
+    "node_modules/@astrojs/sitemap/node_modules/zod": {
+      "version": "4.3.6",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz",
+      "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
     "node_modules/@astrojs/telemetry": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/@astrojs/telemetry/-/telemetry-3.3.0.tgz",
@@ -2201,6 +2222,15 @@
         "undici-types": "~7.18.0"
       }
     },
+    "node_modules/@types/sax": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/@types/sax/-/sax-1.2.7.tgz",
+      "integrity": "sha512-rO73L89PJxeYM3s3pPPjiPgVVcymqU490g0YO5n5By0k2Erzj6tay/4lr1CHAAU4JyOWd1rpQ8bCf6cZfHU96A==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/unist": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/@types/unist/-/unist-3.0.3.tgz",
@@ -6454,6 +6484,40 @@
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       "license": "MIT"
     },
+    "node_modules/sitemap": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/sitemap/-/sitemap-9.0.1.tgz",
+      "integrity": "sha512-S6hzjGJSG3d6if0YoF5kTyeRJvia6FSTBroE5fQ0bu1QNxyJqhhinfUsXi9fH3MgtXODWvwo2BDyQSnhPQ88uQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "^24.9.2",
+        "@types/sax": "^1.2.1",
+        "arg": "^5.0.0",
+        "sax": "^1.4.1"
+      },
+      "bin": {
+        "sitemap": "dist/esm/cli.js"
+      },
+      "engines": {
+        "node": ">=20.19.5",
+        "npm": ">=10.8.2"
+      }
+    },
+    "node_modules/sitemap/node_modules/@types/node": {
+      "version": "24.12.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.12.0.tgz",
+      "integrity": "sha512-GYDxsZi3ChgmckRT9HPU0WEhKLP08ev/Yfcq2AstjrDASOYCSXeyjDsHg4v5t4jOj7cyDX3vmprafKlWIG9MXQ==",
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~7.16.0"
+      }
+    },
+    "node_modules/sitemap/node_modules/undici-types": {
+      "version": "7.16.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
+      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "license": "MIT"
+    },
     "node_modules/smol-toml": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/smol-toml/-/smol-toml-1.6.0.tgz",
@@ -6494,6 +6558,12 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/stream-replace-string": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/stream-replace-string/-/stream-replace-string-2.0.0.tgz",
+      "integrity": "sha512-TlnjJ1C0QrmxRNrON00JvaFFlNh5TTG00APw23j74ET7gkQpTASi6/L2fuiav8pzK715HXtUeClpBTw2NPSn6w==",
+      "license": "MIT"
+    },
     "node_modules/string-width": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-7.2.0.tgz",