diff --git a/styles/base.css b/styles/base.css
new file mode 100644
index 0000000..792282e
--- /dev/null
+++ b/styles/base.css
@@ -0,0 +1,78 @@
+/**
+ * Base Styles - 基礎樣式
+ * 包含 CSS 變數定義、CSS Reset、全域樣式
+ */
+
+/* ==================== CSS Variables ==================== */
+:root {
+    /* 主題色 */
+    --primary: #1a5276;
+    --primary-light: #2980b9;
+    --primary-dark: #0e3a53;
+    --accent: #e67e22;
+    --accent-light: #f39c12;
+    --green: #27ae60;
+    --green-dark: #1e8449;
+
+    /* 背景色 */
+    --bg-main: #f4f6f9;
+    --bg-card: #ffffff;
+    --border: #d5dbdf;
+
+    /* 文字顏色 */
+    --text-primary: #2c3e50;
+    --text-secondary: #5d6d7e;
+
+    /* 語義化顏色 */
+    --success: #27ae60;
+    --warning: #f39c12;
+    --danger: #e74c3c;
+
+    /* 陰影與圓角 */
+    --shadow: 0 4px 20px rgba(26, 82, 118, 0.12);
+    --radius: 8px;
+}
+
+/* ==================== CSS Reset ==================== */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+/* ==================== Global Styles ==================== */
+body {
+    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
+    background: linear-gradient(135deg, #e8f4fc 0%, #f4f6f9 100%);
+    min-height: 100vh;
+    color: var(--text-primary);
+}
+
+/* ==================== Animations ==================== */
+@keyframes fadeIn {
+    from {
+        opacity: 0;
+        transform: translateY(8px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+@keyframes spin {
+    to {
+        transform: rotate(360deg);
+    }
+}
+
+@keyframes modalIn {
+    from {
+        opacity: 0;
+        transform: scale(0.9);
+    }
+    to {
+        opacity: 1;
+        transform: scale(1);
+    }
+}
diff --git a/styles/components.css b/styles/components.css
new file mode 100644
index 0000000..420a109
--- /dev/null
+++ b/styles/components.css
@@ -0,0 +1,562 @@
+/**
+ * Components Styles - 元件樣式
+ * 包含按鈕、表單、卡片、頁籤、彈窗、Toast 等可重用元件
+ */
+
+/* ==================== Tabs ==================== */
+.tabs {
+    display: flex;
+    background: #f8fafc;
+    border-bottom: 2px solid var(--border);
+}
+
+.tab-btn {
+    padding: 16px 32px;
+    border: none;
+    background: transparent;
+    font-family: inherit;
+    font-size: 0.95rem;
+    font-weight: 500;
+    color: var(--text-secondary);
+    cursor: pointer;
+    position: relative;
+    transition: all 0.3s ease;
+}
+
+.tab-btn:hover {
+    color: var(--primary);
+    background: rgba(26, 82, 118, 0.05);
+}
+
+.tab-btn.active {
+    color: var(--primary);
+    background: var(--bg-card);
+}
+
+.tab-btn.active::after {
+    content: '';
+    position: absolute;
+    bottom: -2px;
+    left: 0;
+    right: 0;
+    height: 3px;
+    background: var(--primary);
+    border-radius: 2px 2px 0 0;
+}
+
+.tab-content {
+    display: none;
+    padding: 28px;
+    animation: fadeIn 0.3s ease;
+}
+
+.tab-content.active {
+    display: block;
+}
+
+/* ==================== Form Elements ==================== */
+.form-grid {
+    display: grid;
+    grid-template-columns: repeat(2, 1fr);
+    gap: 20px 32px;
+}
+
+.form-grid.three-cols {
+    grid-template-columns: repeat(3, 1fr);
+}
+
+.form-group {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+
+.form-group.full-width {
+    grid-column: 1 / -1;
+}
+
+.form-group label {
+    font-size: 0.875rem;
+    font-weight: 500;
+    color: var(--text-secondary);
+    display: flex;
+    align-items: center;
+    gap: 4px;
+}
+
+.form-group label .required {
+    color: var(--danger);
+    font-weight: 600;
+}
+
+.input-wrapper {
+    display: flex;
+    gap: 8px;
+    align-items: center;
+}
+
+input[type="text"],
+input[type="number"],
+input[type="date"],
+select,
+textarea {
+    width: 100%;
+    padding: 10px 14px;
+    border: 1.5px solid var(--border);
+    border-radius: 6px;
+    font-family: inherit;
+    font-size: 0.9rem;
+    color: var(--text-primary);
+    background: #fafbfc;
+    transition: all 0.2s ease;
+}
+
+input:focus,
+select:focus,
+textarea:focus {
+    outline: none;
+    border-color: var(--primary-light);
+    background: #ffffff;
+    box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.1);
+}
+
+input:read-only {
+    background: #f0f3f5;
+    color: var(--text-secondary);
+    cursor: default;
+}
+
+textarea {
+    min-height: 100px;
+    resize: vertical;
+}
+
+select {
+    cursor: pointer;
+    appearance: none;
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235d6d7e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
+    background-repeat: no-repeat;
+    background-position: right 12px center;
+    padding-right: 36px;
+}
+
+/* ==================== Buttons ==================== */
+.btn {
+    padding: 12px 24px;
+    border: none;
+    border-radius: 6px;
+    font-family: inherit;
+    font-size: 0.9rem;
+    font-weight: 500;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    transition: all 0.2s ease;
+}
+
+.btn-primary {
+    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
+    color: white;
+    box-shadow: 0 2px 8px rgba(26, 82, 118, 0.3);
+}
+
+.btn-primary:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(26, 82, 118, 0.4);
+}
+
+.btn-secondary {
+    background: white;
+    color: var(--primary);
+    border: 1.5px solid var(--primary);
+}
+
+.btn-secondary:hover {
+    background: rgba(26, 82, 118, 0.05);
+}
+
+.btn-cancel {
+    background: #f0f3f5;
+    color: var(--text-secondary);
+}
+
+.btn-cancel:hover {
+    background: #e5e9ec;
+}
+
+.btn svg {
+    width: 18px;
+    height: 18px;
+    fill: currentColor;
+}
+
+.btn-lookup {
+    padding: 10px 16px;
+    border: 1.5px solid var(--border);
+    border-radius: 6px;
+    background: #f8fafc;
+    color: var(--text-secondary);
+    font-size: 0.85rem;
+    cursor: pointer;
+    transition: all 0.2s ease;
+    white-space: nowrap;
+}
+
+.btn-lookup:hover {
+    background: var(--primary);
+    color: white;
+    border-color: var(--primary);
+}
+
+.btn-icon {
+    width: 38px;
+    height: 38px;
+    border: 1.5px solid var(--border);
+    border-radius: 6px;
+    background: #f8fafc;
+    color: var(--text-secondary);
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: all 0.2s ease;
+}
+
+.btn-icon:hover {
+    background: var(--primary);
+    color: white;
+    border-color: var(--primary);
+}
+
+.btn-icon svg {
+    width: 18px;
+    height: 18px;
+    fill: currentColor;
+}
+
+.nav-buttons {
+    display: flex;
+    gap: 8px;
+}
+
+.nav-btn {
+    width: 36px;
+    height: 36px;
+    border: 1.5px solid var(--border);
+    border-radius: 6px;
+    background: white;
+    color: var(--text-secondary);
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: all 0.2s ease;
+}
+
+.nav-btn:hover {
+    border-color: var(--primary);
+    color: var(--primary);
+}
+
+.nav-btn svg {
+    width: 16px;
+    height: 16px;
+    fill: currentColor;
+}
+
+/* ==================== AI Button ==================== */
+.ai-generate-btn {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    padding: 12px 24px;
+    margin-bottom: 24px;
+    background: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
+    color: white;
+    border: none;
+    border-radius: var(--radius);
+    font-family: inherit;
+    font-size: 0.95rem;
+    font-weight: 600;
+    cursor: pointer;
+    box-shadow: 0 4px 15px rgba(155, 89, 182, 0.3);
+    transition: all 0.3s ease;
+}
+
+.ai-generate-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(155, 89, 182, 0.4);
+}
+
+.ai-generate-btn:disabled {
+    opacity: 0.7;
+    cursor: not-allowed;
+    transform: none;
+}
+
+.ai-generate-btn svg {
+    width: 20px;
+    height: 20px;
+    fill: currentColor;
+}
+
+.ai-generate-btn .spinner {
+    width: 20px;
+    height: 20px;
+    border: 2px solid rgba(255, 255, 255, 0.3);
+    border-top-color: white;
+    border-radius: 50%;
+    animation: spin 0.8s linear infinite;
+}
+
+/* ==================== Form Actions ==================== */
+.form-actions {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 20px 28px;
+    background: #f8fafc;
+    border-top: 1px solid var(--border);
+}
+
+.action-buttons {
+    display: flex;
+    gap: 12px;
+}
+
+/* ==================== Toggle Switch ==================== */
+.toggle-group {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+}
+
+.toggle-switch {
+    position: relative;
+    width: 52px;
+    height: 28px;
+}
+
+.toggle-switch input {
+    opacity: 0;
+    width: 0;
+    height: 0;
+}
+
+.toggle-slider {
+    position: absolute;
+    cursor: pointer;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background-color: #ccc;
+    transition: 0.3s;
+    border-radius: 28px;
+}
+
+.toggle-slider:before {
+    position: absolute;
+    content: "";
+    height: 22px;
+    width: 22px;
+    left: 3px;
+    bottom: 3px;
+    background-color: white;
+    transition: 0.3s;
+    border-radius: 50%;
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
+}
+
+.toggle-switch input:checked + .toggle-slider {
+    background-color: var(--success);
+}
+
+.toggle-switch input:checked + .toggle-slider:before {
+    transform: translateX(24px);
+}
+
+.toggle-label {
+    font-size: 0.9rem;
+    color: var(--text-secondary);
+}
+
+/* ==================== Toast Notification ==================== */
+.toast {
+    position: fixed;
+    top: 24px;
+    right: 24px;
+    padding: 16px 24px;
+    background: var(--success);
+    color: white;
+    border-radius: var(--radius);
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    transform: translateX(120%);
+    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
+    z-index: 1000;
+}
+
+.toast.show {
+    transform: translateX(0);
+}
+
+.toast svg {
+    width: 24px;
+    height: 24px;
+    fill: currentColor;
+}
+
+/* ==================== Modal ==================== */
+.modal-overlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.5);
+    display: none;
+    align-items: center;
+    justify-content: center;
+    z-index: 100;
+    backdrop-filter: blur(4px);
+}
+
+.modal-overlay.show {
+    display: flex;
+}
+
+.modal {
+    background: white;
+    border-radius: var(--radius);
+    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
+    width: 90%;
+    max-width: 500px;
+    animation: modalIn 0.3s ease;
+}
+
+.modal-header {
+    padding: 20px 24px;
+    border-bottom: 1px solid var(--border);
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.modal-header h3 {
+    font-size: 1.1rem;
+    font-weight: 600;
+}
+
+.modal-close {
+    width: 32px;
+    height: 32px;
+    border: none;
+    background: #f0f3f5;
+    border-radius: 6px;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: all 0.2s ease;
+}
+
+.modal-close:hover {
+    background: var(--danger);
+    color: white;
+}
+
+.modal-body {
+    padding: 24px;
+}
+
+.modal-footer {
+    padding: 16px 24px;
+    border-top: 1px solid var(--border);
+    display: flex;
+    justify-content: flex-end;
+    gap: 12px;
+}
+
+/* ==================== Checkbox Group ==================== */
+.checkbox-group {
+    display: grid;
+    grid-template-columns: repeat(2, 1fr);
+    gap: 12px;
+}
+
+.checkbox-item {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    padding: 10px 12px;
+    border: 1.5px solid var(--border);
+    border-radius: 6px;
+    cursor: pointer;
+    transition: all 0.2s ease;
+}
+
+.checkbox-item:hover {
+    border-color: var(--primary-light);
+    background: rgba(41, 128, 185, 0.05);
+}
+
+.checkbox-item input {
+    width: 18px;
+    height: 18px;
+    accent-color: var(--primary);
+}
+
+.checkbox-item label {
+    cursor: pointer;
+    font-size: 0.9rem;
+}
+
+/* ==================== Special Fields ==================== */
+.confidential-field {
+    position: relative;
+}
+
+.confidential-field input {
+    padding-left: 32px;
+}
+
+.confidential-field::before {
+    content: '🔒';
+    position: absolute;
+    left: 10px;
+    top: 50%;
+    transform: translateY(-50%);
+    font-size: 14px;
+}
+
+.numbered-textarea {
+    font-family: inherit;
+    line-height: 1.8;
+}
+
+/* ==================== Data Preview ==================== */
+.data-preview {
+    margin-top: 24px;
+    padding: 20px;
+    background: #f8fafc;
+    border-radius: var(--radius);
+    border: 1px solid var(--border);
+}
+
+.data-preview h4 {
+    font-size: 0.9rem;
+    color: var(--text-secondary);
+    margin-bottom: 12px;
+}
+
+.data-preview pre {
+    font-family: 'Monaco', 'Consolas', monospace;
+    font-size: 0.8rem;
+    background: #2c3e50;
+    color: #ecf0f1;
+    padding: 16px;
+    border-radius: 6px;
+    overflow-x: auto;
+    max-height: 300px;
+}
diff --git a/styles/layout.css b/styles/layout.css
new file mode 100644
index 0000000..ad32518
--- /dev/null
+++ b/styles/layout.css
@@ -0,0 +1,257 @@
+/**
+ * Layout Styles - 布局樣式
+ * 包含容器、整體布局、Header、模組切換器
+ */
+
+/* ==================== Container ==================== */
+.app-container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 24px;
+}
+
+/* ==================== User Info Bar ==================== */
+.user-info-bar {
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    border-radius: var(--radius);
+    padding: 12px 20px;
+    margin-bottom: 20px;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    box-shadow: var(--shadow);
+}
+
+.user-info {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    color: #ffffff;
+}
+
+.user-avatar {
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+    background: rgba(255, 255, 255, 0.2);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-weight: bold;
+    font-size: 1.1rem;
+}
+
+.user-details {
+    display: flex;
+    flex-direction: column;
+}
+
+.user-name {
+    font-weight: 600;
+    font-size: 1rem;
+}
+
+.user-role {
+    font-size: 0.85rem;
+    opacity: 0.9;
+}
+
+.logout-btn {
+    padding: 8px 20px;
+    border: 2px solid rgba(255, 255, 255, 0.3);
+    border-radius: 6px;
+    background: rgba(255, 255, 255, 0.1);
+    color: #ffffff;
+    font-family: inherit;
+    font-size: 0.9rem;
+    font-weight: 500;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    transition: all 0.3s ease;
+}
+
+.logout-btn:hover {
+    background: rgba(255, 255, 255, 0.2);
+    border-color: rgba(255, 255, 255, 0.5);
+    transform: translateY(-2px);
+}
+
+.logout-btn svg {
+    width: 18px;
+    height: 18px;
+    fill: currentColor;
+}
+
+/* ==================== Module Selector ==================== */
+.module-selector {
+    display: flex;
+    gap: 12px;
+    margin-bottom: 20px;
+    flex-wrap: wrap;
+}
+
+.module-btn {
+    flex: 1;
+    min-width: 200px;
+    padding: 14px 20px;
+    border: 2px solid var(--border);
+    border-radius: var(--radius);
+    background: var(--bg-card);
+    font-family: inherit;
+    font-size: 0.95rem;
+    font-weight: 500;
+    color: var(--text-secondary);
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 10px;
+    transition: all 0.3s ease;
+}
+
+.module-btn:hover {
+    border-color: var(--primary-light);
+    color: var(--primary);
+    transform: translateY(-2px);
+    box-shadow: var(--shadow);
+}
+
+.module-btn.active {
+    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
+    border-color: var(--primary);
+    color: white;
+    box-shadow: 0 4px 15px rgba(26, 82, 118, 0.3);
+}
+
+.module-btn.active.job-active {
+    background: linear-gradient(135deg, var(--accent) 0%, #d35400 100%);
+    border-color: var(--accent);
+    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.3);
+}
+
+.module-btn.active.desc-active {
+    background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
+    border-color: var(--green);
+    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.3);
+}
+
+.module-btn svg {
+    width: 22px;
+    height: 22px;
+    fill: currentColor;
+}
+
+.module-content {
+    display: none;
+}
+
+.module-content.active {
+    display: block;
+    animation: fadeIn 0.3s ease;
+}
+
+/* ==================== App Header ==================== */
+.app-header {
+    display: flex;
+    align-items: center;
+    gap: 16px;
+    margin-bottom: 24px;
+    padding: 20px 28px;
+    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
+    border-radius: var(--radius);
+    box-shadow: var(--shadow);
+}
+
+.app-header.job-header {
+    background: linear-gradient(135deg, var(--accent) 0%, #d35400 100%);
+}
+
+.app-header.desc-header {
+    background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
+}
+
+.app-header .icon {
+    width: 48px;
+    height: 48px;
+    background: rgba(255, 255, 255, 0.15);
+    border-radius: 12px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.app-header .icon svg {
+    width: 28px;
+    height: 28px;
+    fill: #ffffff;
+}
+
+.app-header h1 {
+    color: #ffffff;
+    font-size: 1.5rem;
+    font-weight: 600;
+}
+
+.app-header .subtitle {
+    color: rgba(255, 255, 255, 0.7);
+    font-size: 0.875rem;
+    margin-top: 2px;
+}
+
+/* ==================== Form Card ==================== */
+.form-card {
+    background: var(--bg-card);
+    border-radius: var(--radius);
+    box-shadow: var(--shadow);
+    overflow: hidden;
+}
+
+/* ==================== Sections ==================== */
+.section-box {
+    background: #f8fafc;
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
+    margin-bottom: 20px;
+}
+
+.section-header {
+    padding: 12px 16px;
+    background: linear-gradient(135deg, #e8f4fc 0%, #f0f4f8 100%);
+    border-bottom: 1px solid var(--border);
+    font-weight: 600;
+    font-size: 0.9rem;
+    color: var(--primary);
+}
+
+.section-header.green {
+    background: linear-gradient(135deg, #e8f8f0 0%, #f0f8f4 100%);
+    color: var(--green-dark);
+}
+
+.section-body {
+    padding: 20px;
+}
+
+.section-divider {
+    grid-column: 1 / -1;
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    margin: 8px 0;
+}
+
+.section-divider span {
+    font-size: 0.85rem;
+    font-weight: 600;
+    color: var(--primary);
+    white-space: nowrap;
+}
+
+.section-divider::after {
+    content: '';
+    flex: 1;
+    height: 1px;
+    background: linear-gradient(to right, var(--border), transparent);
+}
diff --git a/styles/modules.css b/styles/modules.css
new file mode 100644
index 0000000..8dc5bf6
--- /dev/null
+++ b/styles/modules.css
@@ -0,0 +1,27 @@
+/**
+ * Modules Styles - 模組專屬樣式
+ * 包含各個頁籤/模組的特定樣式需求
+ */
+
+/* ==================== 崗位基礎資料模組 ==================== */
+/* (目前使用共用元件，無特殊樣式) */
+
+/* ==================== 職務基礎資料模組 ==================== */
+/* (目前使用共用元件，無特殊樣式) */
+
+/* ==================== 部門職責模組 ==================== */
+/* (目前使用共用元件，無特殊樣式) */
+
+/* ==================== 崗位描述模組 ==================== */
+/* (目前使用共用元件，無特殊樣式) */
+
+/* ==================== 崗位清單模組 ==================== */
+/* (目前使用共用元件，無特殊樣式) */
+
+/* ==================== 管理者頁面模組 ==================== */
+/* (目前使用共用元件，無特殊樣式) */
+
+/*
+ * 注意：如果未來各模組需要特定樣式，可在此添加
+ * 例如：特殊的表格樣式、卡片佈局等
+ */
diff --git a/styles/utilities.css b/styles/utilities.css
new file mode 100644
index 0000000..057ddde
--- /dev/null
+++ b/styles/utilities.css
@@ -0,0 +1,56 @@
+/**
+ * Utilities Styles - 工具類別與響應式設計
+ * 包含快速工具類別、響應式斷點
+ */
+
+/* ==================== Utility Classes ==================== */
+/* (可按需添加工具類別，如 .mt-1, .text-center 等) */
+
+/* ==================== Responsive Design ==================== */
+@media (max-width: 768px) {
+    /* Form Grid */
+    .form-grid,
+    .form-grid.three-cols {
+        grid-template-columns: 1fr;
+    }
+
+    /* Form Actions */
+    .form-actions {
+        flex-direction: column;
+        gap: 16px;
+    }
+
+    .action-buttons {
+        width: 100%;
+        flex-direction: column;
+    }
+
+    .btn {
+        justify-content: center;
+    }
+
+    /* Module Selector */
+    .module-selector {
+        flex-direction: column;
+    }
+
+    .module-btn {
+        min-width: 100%;
+    }
+
+    /* User Info Bar */
+    .user-info-bar {
+        flex-direction: column;
+        gap: 12px;
+        text-align: center;
+    }
+
+    .user-info {
+        justify-content: center;
+    }
+
+    .logout-btn {
+        width: 100%;
+        justify-content: center;
+    }
+}