diff --git a/agreement.php b/agreement.php
index d86f2d3..25f5687 100644
--- a/agreement.php
+++ b/agreement.php
@@ -1,7 +1,7 @@
 <?php
 require_once __DIR__ . '/db/config.php';
 $project_name = '智域科技';
-$logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
+$logo_path = '/assets/pasted-20260226-073317-a8105f30.png';
 ?>
 <!DOCTYPE html>
 <html lang="zh-CN">
@@ -19,7 +19,7 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
     <nav class="navbar navbar-expand-lg navbar-light bg-white border-bottom scrolled">
         <div class="container">
             <a class="navbar-brand d-flex align-items-center gap-2" href="/">
-                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="height: 32px;">
+                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" >
                 <span class="fw-bold text-dark"><?= htmlspecialchars($project_name) ?></span>
             </a>
             <a href="/" class="btn btn-outline-primary btn-sm ms-auto fw-bold"><i class="bi bi-arrow-left"></i> 返回首页</a>
diff --git a/assets/css/custom.css b/assets/css/custom.css
index 88425c2..5e1915d 100644
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@@ -22,39 +22,77 @@ body {
 
 /* 导航栏优化 */
 .navbar {
-    padding: 1.25rem 0;
+    padding: 1rem 0;
     transition: all 0.3s;
     background: rgba(255, 255, 255, 0.9);
     backdrop-filter: blur(10px);
+    height: 80px;
+    display: flex;
+    align-items: center;
 }
 
 .navbar.scrolled {
-    padding: 0.75rem 0;
+    padding: 0.5rem 0;
+    height: 70px;
     box-shadow: 0 10px 30px rgba(0,0,0,0.05);
 }
 
+/* LOGO 浮动动效与极致发光 */
+@keyframes logo-float {
+    0%, 100% { transform: translateY(0) rotate(0deg); }
+    50% { transform: translateY(-5px) rotate(1deg); }
+}
+
+.navbar-brand {
+    font-size: 2.4rem; /* 统一基准字号 */
+    display: inline-flex;
+    align-items: center;
+    text-decoration: none;
+    transition: all 0.3s;
+}
+
+.navbar.scrolled .navbar-brand {
+    font-size: 2rem;
+}
+
 .navbar-brand img {
-    max-height: 45px;
+    height: 1.2em; /* 增加至1.2em，补偿图片边缘留白，确保视觉高度与文字对齐 */
     width: auto;
     object-fit: contain;
     background: transparent !important;
+    filter: brightness(1.4) contrast(1.1) drop-shadow(0 0 8px rgba(0, 102, 255, 0.6)) drop-shadow(0 0 20px rgba(0, 102, 255, 0.3));
+    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
+    animation: logo-float 3s ease-in-out infinite;
+    z-index: 2;
+    display: block;
+    margin-top: -0.1em; /* 微调垂直位置，使其视觉重心更平衡 */
+}
+
+.navbar-brand span {
+    font-size: 1em; /* 继承父级 2.4rem */
+    line-height: 1;
+    font-weight: 900;
+    letter-spacing: -0.02em;
+    color: #0f172a;
+    display: inline-flex;
+    align-items: center;
 }
 
 /* 英雄首屏字体与布局 */
 .hero-section {
-    padding-top: 160px; /* 增加顶部间距，不与菜单栏平齐 */
+    padding-top: 160px;
     padding-bottom: 100px;
 }
 
 .hero-title {
-    font-size: clamp(2.5rem, 6vw, 4rem); /* 更大的字体 */
+    font-size: clamp(2.5rem, 6vw, 4rem);
     font-weight: 850;
     line-height: 1.1;
     margin-bottom: 1.5rem;
 }
 
 .lead {
-    font-size: 1.35rem; /* 更大的字体 */
+    font-size: 1.35rem;
     font-weight: 400;
 }
 
@@ -225,6 +263,48 @@ body {
     padding: 1.25rem 2.5rem;
 }
 
+/* Form Icon Styles */
+.input-group-text {
+    background-color: transparent;
+    border: none;
+    padding-right: 0;
+    color: var(--text-muted);
+}
+
+.form-icon-input {
+    padding-left: 0.5rem;
+}
+
+/* Contact Sidebar Icons Matching Image (Solid White) */
+.contact-sidebar-icon {
+    width: 60px;
+    height: 60px;
+    background: #fff;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: var(--accent);
+    font-size: 1.5rem;
+    flex-shrink: 0;
+    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
+}
+
+/* Footer white theme */
+footer.bg-white {
+    color: var(--text-main);
+}
+footer.bg-white .text-secondary {
+    color: var(--text-muted) !important;
+}
+footer.bg-white a.text-reset:hover {
+    color: var(--accent) !important;
+}
+footer.bg-white .opacity-10 {
+    opacity: 0.05 !important;
+    background-color: var(--text-main);
+}
+
 /* 响应式调整 */
 @media (max-width: 1200px) {
     .grid-4 { grid-template-columns: repeat(2, 1fr); }
@@ -240,4 +320,7 @@ body {
 @media (max-width: 768px) {
     .grid-4, .grid-6 { grid-template-columns: 1fr; }
     .hero-title { font-size: 2.2rem; }
-}
\ No newline at end of file
+    .navbar { height: auto; padding: 0.75rem 0; }
+    .navbar-brand { font-size: 2rem; }
+    .navbar-brand img { animation: none; }
+}
diff --git a/assets/pasted-20260226-070550-13daf1c2.png b/assets/pasted-20260226-070550-13daf1c2.png
new file mode 100644
index 0000000..36c0049
Binary files /dev/null and b/assets/pasted-20260226-070550-13daf1c2.png differ
diff --git a/assets/pasted-20260226-072711-32e4efeb.png b/assets/pasted-20260226-072711-32e4efeb.png
new file mode 100644
index 0000000..6e8190f
Binary files /dev/null and b/assets/pasted-20260226-072711-32e4efeb.png differ
diff --git a/assets/pasted-20260226-073317-a8105f30.png b/assets/pasted-20260226-073317-a8105f30.png
new file mode 100644
index 0000000..1895976
Binary files /dev/null and b/assets/pasted-20260226-073317-a8105f30.png differ
diff --git a/case-detail.php b/case-detail.php
index 66644ff..9e709c2 100644
--- a/case-detail.php
+++ b/case-detail.php
@@ -1,7 +1,7 @@
 <?php
 require_once __DIR__ . '/db/config.php';
 $project_name = '智域科技';
-$logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
+$logo_path = '/assets/pasted-20260226-073317-a8105f30.png';
 $id = $_GET['id'] ?? '智造 ERP 全链路升级';
 ?>
 <!DOCTYPE html>
@@ -20,7 +20,7 @@ $id = $_GET['id'] ?? '智造 ERP 全链路升级';
     <nav class="navbar navbar-expand-lg navbar-light bg-white border-bottom scrolled">
         <div class="container">
             <a class="navbar-brand d-flex align-items-center gap-2" href="/">
-                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="height: 32px;">
+                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" >
                 <span class="fw-bold text-dark"><?= htmlspecialchars($project_name) ?></span>
             </a>
             <a href="/" class="btn btn-outline-primary btn-sm ms-auto fw-bold"><i class="bi bi-arrow-left"></i> 返回案例中心</a>
diff --git a/contact.php b/contact.php
index 91fb604..4cdcc81 100644
--- a/contact.php
+++ b/contact.php
@@ -1,7 +1,7 @@
 <?php
 require_once __DIR__ . '/db/config.php';
 $project_name = '智域科技';
-$logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
+$logo_path = '/assets/pasted-20260226-073317-a8105f30.png';
 ?>
 <!DOCTYPE html>
 <html lang="zh-CN">
@@ -19,7 +19,7 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
     <nav class="navbar navbar-expand-lg navbar-light bg-white border-bottom scrolled">
         <div class="container">
             <a class="navbar-brand d-flex align-items-center gap-2" href="/">
-                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="height: 32px;">
+                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>">
                 <span class="fw-bold text-dark"><?= htmlspecialchars($project_name) ?></span>
             </a>
             <a href="/" class="btn btn-outline-primary btn-sm ms-auto fw-bold"><i class="bi bi-arrow-left"></i> 返回首页</a>
@@ -35,7 +35,7 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
                         <p class="opacity-75 mb-5 lh-lg">我们致力于为您提供最专业、最高效的数字化转型建议。无论您是在寻找大规模架构升级方案，还是需要定制化的 AI 业务化集成，智域科技随时为您待命。</p>
                         
                         <div class="d-flex align-items-center gap-4 mb-4">
-                            <div class="bg-white bg-opacity-20 p-3 rounded-circle"><i class="bi bi-telegram h4 mb-0"></i></div>
+                            <div class="contact-sidebar-icon"><i class="bi bi-telegram"></i></div>
                             <div>
                                 <h6 class="fw-bold mb-1">Telegram 咨询</h6>
                                 <p class="small mb-0 opacity-75">@zhangshihao818</p>
@@ -43,7 +43,7 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
                         </div>
                         
                         <div class="d-flex align-items-center gap-4 mb-4">
-                            <div class="bg-white bg-opacity-20 p-3 rounded-circle"><i class="bi bi-geo-alt h4 mb-0"></i></div>
+                            <div class="contact-sidebar-icon"><i class="bi bi-geo-alt"></i></div>
                             <div>
                                 <h6 class="fw-bold mb-1">分布式运行</h6>
                                 <p class="small mb-0 opacity-75">全球 24/7 数字化响应</p>
@@ -51,7 +51,7 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
                         </div>
                         
                         <div class="d-flex align-items-center gap-4">
-                            <div class="bg-white bg-opacity-20 p-3 rounded-circle"><i class="bi bi-shield-check h4 mb-0"></i></div>
+                            <div class="contact-sidebar-icon"><i class="bi bi-shield-check"></i></div>
                             <div>
                                 <h6 class="fw-bold mb-1">技术保障</h6>
                                 <p class="small mb-0 opacity-75">金融级全天候技术服务</p>
@@ -69,25 +69,37 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
                             <div class="row g-4">
                                 <div class="col-md-6">
                                     <label class="form-label small fw-bold text-dark">姓名 / 机构</label>
-                                    <input type="text" name="name" class="form-control form-control-lg bg-light border-0" placeholder="您的姓名或公司名称" required>
+                                    <div class="input-group">
+                                        <span class="input-group-text bg-light border-0"><i class="bi bi-person"></i></span>
+                                        <input type="text" name="name" class="form-control form-control-lg bg-light border-0 form-icon-input" placeholder="您的姓名或公司名称" required>
+                                    </div>
                                 </div>
                                 <div class="col-md-6">
                                     <label class="form-label small fw-bold text-dark">联系方式 (Telegram / Email)</label>
-                                    <input type="text" name="contact" class="form-control form-control-lg bg-light border-0" placeholder="您的常用联系方式" required>
+                                    <div class="input-group">
+                                        <span class="input-group-text bg-light border-0"><i class="bi bi-chat-dots"></i></span>
+                                        <input type="text" name="contact" class="form-control form-control-lg bg-light border-0 form-icon-input" placeholder="您的常用联系方式" required>
+                                    </div>
                                 </div>
                                 <div class="col-12">
                                     <label class="form-label small fw-bold text-dark">业务领域</label>
-                                    <select name="type" class="form-select form-select-lg bg-light border-0">
-                                        <option selected>定制软件开发</option>
-                                        <option>云原生架构转型</option>
-                                        <option>金融级安全审计</option>
-                                        <option>AI 业务化集成</option>
-                                        <option>其他数字化需求</option>
-                                    </select>
+                                    <div class="input-group">
+                                        <span class="input-group-text bg-light border-0"><i class="bi bi-briefcase"></i></span>
+                                        <select name="type" class="form-select form-select-lg bg-light border-0 form-icon-input">
+                                            <option selected>定制软件开发</option>
+                                            <option>云原生架构转型</option>
+                                            <option>金融级安全审计</option>
+                                            <option>AI 业务化集成</option>
+                                            <option>其他数字化需求</option>
+                                        </select>
+                                    </div>
                                 </div>
                                 <div class="col-12">
                                     <label class="form-label small fw-bold text-dark">业务逻辑详情 / 痛点说明</label>
-                                    <textarea name="message" rows="5" class="form-control bg-light border-0" placeholder="请简要描述您的业务逻辑、现有系统痛点或未来转型目标..."></textarea>
+                                    <div class="input-group align-items-start">
+                                        <span class="input-group-text bg-light border-0 pt-3"><i class="bi bi-pencil-square"></i></span>
+                                        <textarea name="message" rows="5" class="form-control bg-light border-0 form-icon-input" placeholder="请简要描述您的业务逻辑、现有系统痛点或未来转型目标..."></textarea>
+                                    </div>
                                 </div>
                                 <div class="col-12 mt-5">
                                     <button type="submit" class="btn btn-primary btn-lg w-100 py-3 shadow">立即提交需求 <i class="bi bi-send-fill ms-2"></i></button>
diff --git a/index.php b/index.php
index ab5bbdb..194a47d 100644
--- a/index.php
+++ b/index.php
@@ -2,7 +2,7 @@
 require_once __DIR__ . '/db/config.php';
 $project_name = '智域科技';
 $project_description = '全球领先的IT数字化架构与行业解决方案专家';
-$logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
+$logo_path = '/assets/pasted-20260226-073317-a8105f30.png';
 ?>
 <!DOCTYPE html>
 <html lang="zh-CN">
@@ -23,8 +23,8 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
     <nav class="navbar navbar-expand-lg navbar-light fixed-top">
         <div class="container">
             <a class="navbar-brand d-flex align-items-center gap-2" href="/">
-                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="background: transparent !important;">
-                <span class="fw-bold h4 mb-0 text-dark"><?= htmlspecialchars($project_name) ?></span>
+                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>">
+                <span class="fw-bold mb-0 text-dark"><?= htmlspecialchars($project_name) ?></span>
             </a>
             <button class="navbar-toggler border-0" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
                 <span class="navbar-toggler-icon"></span>
@@ -348,24 +348,24 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
     </section>
 
     <!-- ⑩ 页脚 -->
-    <footer class="bg-dark text-white pt-5 pb-4">
+    <footer class="bg-white text-dark pt-5 pb-4 border-top">
         <div class="container">
             <div class="row g-5">
                 <div class="col-lg-4">
                     <a class="navbar-brand d-flex align-items-center gap-2 mb-4" href="/">
-                        <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="height: 40px; background: transparent !important;">
-                        <span class="fw-bold h4 mb-0 text-white"><?= htmlspecialchars($project_name) ?></span>
+                        <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>">
+                        <span class="fw-bold text-dark"><?= htmlspecialchars($project_name) ?></span>
                     </a>
-                    <p class="small text-secondary mb-4">智域科技是全球领先的分布式系统专家，致力于通过尖端架构技术赋能企业实现无感数字化转型。</p>
+                    <p class="small text-muted mb-4">智域科技是全球领先的分布式系统专家，致力于通过尖端架构技术赋能企业实现无感数字化转型。</p>
                     <div class="d-flex gap-3">
-                        <a href="#" class="text-white opacity-50 hover-opacity-100"><i class="bi bi-twitter-x"></i></a>
-                        <a href="#" class="text-white opacity-50 hover-opacity-100"><i class="bi bi-linkedin"></i></a>
-                        <a href="https://t.me/zhangshihao818" class="text-white opacity-50 hover-opacity-100"><i class="bi bi-telegram"></i></a>
+                        <a href="#" class="text-dark opacity-50 hover-opacity-100"><i class="bi bi-twitter-x"></i></a>
+                        <a href="#" class="text-dark opacity-50 hover-opacity-100"><i class="bi bi-linkedin"></i></a>
+                        <a href="https://t.me/zhangshihao818" class="text-dark opacity-50 hover-opacity-100"><i class="bi bi-telegram"></i></a>
                     </div>
                 </div>
                 <div class="col-6 col-lg-2">
                     <h6 class="fw-bold mb-4">核心服务</h6>
-                    <ul class="list-unstyled small text-secondary">
+                    <ul class="list-unstyled small text-muted">
                         <li class="mb-2"><a href="service-detail.php?type=软件开发" class="text-decoration-none text-reset">定制软件开发</a></li>
                         <li class="mb-2"><a href="service-detail.php?type=云原生" class="text-decoration-none text-reset">云原生架构</a></li>
                         <li class="mb-2"><a href="service-detail.php?type=安全审计" class="text-decoration-none text-reset">安全合规审计</a></li>
@@ -374,7 +374,7 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
                 </div>
                 <div class="col-6 col-lg-2">
                     <h6 class="fw-bold mb-4">关于我们</h6>
-                    <ul class="list-unstyled small text-secondary">
+                    <ul class="list-unstyled small text-muted">
                         <li class="mb-2"><a href="#cases" class="text-decoration-none text-reset">经典案例</a></li>
                         <li class="mb-2"><a href="privacy.php" class="text-decoration-none text-reset">隐私政策</a></li>
                         <li class="mb-2"><a href="agreement.php" class="text-decoration-none text-reset">服务协议</a></li>
@@ -383,9 +383,9 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
                 </div>
                 <div class="col-lg-4">
                     <h6 class="fw-bold mb-4">订阅技术简报</h6>
-                    <p class="small text-secondary mb-4">每月获取最新的分布式架构趋势与安全动态。</p>
+                    <p class="small text-muted mb-4">每月获取最新的分布式架构趋势与安全动态。</p>
                     <div class="input-group">
-                        <input type="email" class="form-control bg-secondary bg-opacity-10 border-0 text-white" placeholder="您的邮箱地址">
+                        <input type="email" class="form-control bg-light border-0 text-dark" placeholder="您的邮箱地址">
                         <button class="btn btn-primary px-4 fw-bold">订阅</button>
                     </div>
                 </div>
@@ -393,10 +393,10 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
             <hr class="my-5 opacity-10">
             <div class="row align-items-center">
                 <div class="col-md-6 text-center text-md-start">
-                    <p class="small text-secondary mb-0">&copy; 2020 <?= htmlspecialchars($project_name) ?>. 版权所有。</p>
+                    <p class="small text-muted mb-0">&copy; 2020 <?= htmlspecialchars($project_name) ?>. 版权所有。</p>
                 </div>
                 <div class="col-md-6 text-center text-md-end mt-3 mt-md-0">
-                    <span class="small text-secondary">系统状态: <span class="text-success"><i class="bi bi-check-circle-fill me-1"></i> 所有节点正常运行</span></span>
+                    <span class="small text-muted">系统状态: <span class="text-success"><i class="bi bi-check-circle-fill me-1"></i> 所有节点正常运行</span></span>
                 </div>
             </div>
         </div>
diff --git a/privacy.php b/privacy.php
index af91fae..ce0f214 100644
--- a/privacy.php
+++ b/privacy.php
@@ -1,7 +1,7 @@
 <?php
 require_once __DIR__ . '/db/config.php';
 $project_name = '智域科技';
-$logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
+$logo_path = '/assets/pasted-20260226-073317-a8105f30.png';
 ?>
 <!DOCTYPE html>
 <html lang="zh-CN">
@@ -19,7 +19,7 @@ $logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
     <nav class="navbar navbar-expand-lg navbar-light bg-white border-bottom scrolled">
         <div class="container">
             <a class="navbar-brand d-flex align-items-center gap-2" href="/">
-                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="height: 32px;">
+                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" >
                 <span class="fw-bold text-dark"><?= htmlspecialchars($project_name) ?></span>
             </a>
             <a href="/" class="btn btn-outline-primary btn-sm ms-auto fw-bold"><i class="bi bi-arrow-left"></i> 返回首页</a>
diff --git a/service-detail.php b/service-detail.php
index 545ca3a..452720e 100644
--- a/service-detail.php
+++ b/service-detail.php
@@ -1,7 +1,7 @@
 <?php
 require_once __DIR__ . '/db/config.php';
 $project_name = '智域科技';
-$logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
+$logo_path = '/assets/pasted-20260226-073317-a8105f30.png';
 $type = $_GET['type'] ?? 'Software';
 $titles = [
     'Software' => '定制软件开发 - 深度契合您的业务逻辑',
@@ -27,7 +27,7 @@ $title = $titles[$type] ?? $titles['Software'];
     <nav class="navbar navbar-expand-lg navbar-light bg-white border-bottom scrolled">
         <div class="container">
             <a class="navbar-brand d-flex align-items-center gap-2" href="/">
-                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="height: 32px;">
+                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" >
                 <span class="fw-bold text-dark"><?= htmlspecialchars($project_name) ?></span>
             </a>
             <a href="/" class="btn btn-outline-primary btn-sm ms-auto fw-bold"><i class="bi bi-arrow-left"></i> 返回首页</a>
diff --git a/solution-detail.php b/solution-detail.php
index bf87b7b..27fa27e 100644
--- a/solution-detail.php
+++ b/solution-detail.php
@@ -1,7 +1,7 @@
 <?php
 require_once __DIR__ . '/db/config.php';
 $project_name = '智域科技';
-$logo_path = '/assets/pasted-20260226-063604-a7913cdd.png';
+$logo_path = '/assets/pasted-20260226-073317-a8105f30.png';
 $type = $_GET['type'] ?? '智慧新零售';
 $titles = [
     '智慧新零售' => '智域科技 - 智慧新零售数字化解决方案',
@@ -27,7 +27,7 @@ $title = $titles[$type] ?? '智域科技 - 行业数字化转型实践';
     <nav class="navbar navbar-expand-lg navbar-light bg-white border-bottom scrolled">
         <div class="container">
             <a class="navbar-brand d-flex align-items-center gap-2" href="/">
-                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" style="height: 32px;">
+                <img src="<?= $logo_path ?>" alt="<?= htmlspecialchars($project_name) ?>" >
                 <span class="fw-bold text-dark"><?= htmlspecialchars($project_name) ?></span>
             </a>
             <a href="/" class="btn btn-outline-primary btn-sm ms-auto fw-bold"><i class="bi bi-arrow-left"></i> 返回首页</a>
