diff --git a/src/app/(marketing)/about/about-content-v4.tsx b/src/app/(marketing)/about/about-content-v4.tsx
index 9463628..db201b7 100644
--- a/src/app/(marketing)/about/about-content-v4.tsx
+++ b/src/app/(marketing)/about/about-content-v4.tsx
@@ -209,7 +209,8 @@ function WhoWeAreSection({ data }: { data: AboutData }) {
                   className="group relative border-b border-border-primary pb-6 md:pb-8 last:border-0 last:pb-0"
                 >
                   <div className="flex items-start gap-6 md:gap-8">
-                    <div className="text-4xl md:text-5xl font-black text-text-muted/30 font-mono shrink-0 leading-none pt-1">
+                    {/* 纯装饰序号：与右侧 value.title 并列，无独立语义，标记 aria-hidden 豁免对比度要求 */}
+                    <div aria-hidden="true" className="text-4xl md:text-5xl font-black text-text-muted/30 font-mono shrink-0 leading-none pt-1">
                       {value.number}
                     </div>
                     <div className="flex-1">
diff --git a/src/app/(marketing)/about/brand/brand-content.tsx b/src/app/(marketing)/about/brand/brand-content.tsx
index ae8b7d9..cda6b26 100644
--- a/src/app/(marketing)/about/brand/brand-content.tsx
+++ b/src/app/(marketing)/about/brand/brand-content.tsx
@@ -121,12 +121,12 @@ export default function BrandContent() {
               ))}
             </motion.div>
 
-            {/* 副标题 */}
+            {/* 副标题 — alpha 0.7 仅 4.35:1 未达 WCAG AA 4.5:1，提到 0.8 → 5.74:1，视觉几乎无变化 */}
             <motion.p
               initial={{ opacity: 0, y: 30 }}
               animate={{ opacity: 1, y: 0 }}
               transition={{ duration: 0.7, delay: 0.5, ease: EASE_OUT }}
-              className="text-lg sm:text-xl text-text-secondary/70 max-w-2xl leading-relaxed"
+              className="text-lg sm:text-xl text-text-secondary/80 max-w-2xl leading-relaxed"
             >
               公司于 2026 年 1 月正式成立，核心团队专注企业数字化，从战略规划到系统落地，致力于陪伴每一家企业实现可衡量的业务改善。
               我们相信，技术的力量在于让每一家企业都拥有数据驱动的决策能力。
@@ -268,7 +268,8 @@ export default function BrandContent() {
                           <span className="text-3xl sm:text-4xl font-black text-brand tracking-tight">
                             {item.year}
                           </span>
-                          <span className="text-[11px] tracking-[0.15em] uppercase text-text-muted bg-bg-tertiary px-2 py-0.5">
+                          {/* text-muted 在 bg-tertiary(#F1F5F9) 上仅 4.34:1；换 text-secondary → 9.45:1 */}
+                          <span className="text-[11px] tracking-[0.15em] uppercase text-text-secondary bg-bg-tertiary px-2 py-0.5">
                             {item.highlight}
                           </span>
                         </div>
diff --git a/src/app/(marketing)/products/product-detail-content-v3.tsx b/src/app/(marketing)/products/product-detail-content-v3.tsx
index 995a947..e8c29ca 100644
--- a/src/app/(marketing)/products/product-detail-content-v3.tsx
+++ b/src/app/(marketing)/products/product-detail-content-v3.tsx
@@ -285,7 +285,8 @@ function CaseStudiesSection({ caseStudies }: CaseStudiesSectionProps) {
               >
                 <div className="aspect-[4/3] bg-gradient-to-br from-bg-secondary to-bg-tertiary relative overflow-hidden">
                   <div className="absolute inset-0 flex items-center justify-center">
-                    <span className="text-6xl font-bold text-text-muted/10">
+                    {/* 客户名首字作占位图形（无真实配图时），纯装饰 → aria-hidden 豁免对比度 */}
+                    <span aria-hidden="true" className="text-6xl font-bold text-text-muted/10">
                       {study.client.charAt(0)}
                     </span>
                   </div>
@@ -414,7 +415,7 @@ function CTASection({ product }: CTASectionProps) {
               正在使用旧版 ERP？
               <StaticLink
                 href="/products/erp-upgrade"
-                className="inline-flex items-center gap-1 font-medium text-brand hover:underline"
+                className="inline-flex items-center gap-1 font-medium text-brand hover:underline py-0.5"
               >
                 了解睿新 ERP 升级专题
                 <ArrowRight className="w-4 h-4" />
diff --git a/src/app/(marketing)/solutions/solution-detail-content-v3.tsx b/src/app/(marketing)/solutions/solution-detail-content-v3.tsx
index 5feaf2c..5bbd818 100644
--- a/src/app/(marketing)/solutions/solution-detail-content-v3.tsx
+++ b/src/app/(marketing)/solutions/solution-detail-content-v3.tsx
@@ -375,7 +375,8 @@ function CaseStudiesSection({ caseStudies }: CaseStudiesSectionProps) {
               >
                 <div className="aspect-[4/3] bg-gradient-to-br from-bg-secondary to-bg-tertiary relative overflow-hidden">
                   <div className="absolute inset-0 flex items-center justify-center">
-                    <span className="text-6xl font-bold text-text-muted/10">
+                    {/* 客户名首字作占位图形（无真实配图时），纯装饰 → aria-hidden 豁免对比度 */}
+                    <span aria-hidden="true" className="text-6xl font-bold text-text-muted/10">
                       {study.client.charAt(0)}
                     </span>
                   </div>
diff --git a/src/app/(marketing)/team/team-content-v3.tsx b/src/app/(marketing)/team/team-content-v3.tsx
index 9c9625a..ad40540 100644
--- a/src/app/(marketing)/team/team-content-v3.tsx
+++ b/src/app/(marketing)/team/team-content-v3.tsx
@@ -79,7 +79,9 @@ function StrengthCard({ strength, index }: { strength: StrengthData; index: numb
           <div className="w-12 h-12 flex items-center justify-center border border-brand/30 bg-brand/[0.08] text-brand">
             <Icon className="w-5 h-5" />
           </div>
-          <span className="text-4xl font-bold text-text-muted/10 font-mono">{strength.number}</span>
+          {/* 纯装饰序号：与右侧 h3 标题并列，无独立语义。
+              aria-hidden 让 WCAG 1.4.3 对比度要求不适用于装饰内容（1.13:1 无需强行提亮） */}
+          <span aria-hidden="true" className="text-4xl font-bold text-text-muted/10 font-mono">{strength.number}</span>
         </div>
 
         <h3 className="text-xl font-bold text-ink mb-3">{strength.title}</h3>
@@ -112,7 +114,7 @@ function CultureCard({ culture, index }: { culture: CultureData; index: number }
           <Icon className="w-7 h-7" />
         </div>
 
-        <span className="block text-6xl font-bold text-text-muted/10 font-mono mb-4">{culture.number}</span>
+        <span aria-hidden="true" className="block text-6xl font-bold text-text-muted/10 font-mono mb-4">{culture.number}</span>
 
         <h3 className="text-2xl font-bold text-ink mb-4">{culture.title}</h3>
         <p className="text-text-secondary leading-relaxed">{culture.description}</p>
@@ -197,13 +199,13 @@ export default function TeamContentV3({ data }: { data: Record<string, unknown>
               </motion.div>
             )}
 
-            {/* 描述 */}
+            {/* 描述 — alpha 0.7 仅 4.35:1 未达 WCAG AA 4.5:1，提到 0.8 → 5.74:1，视觉几乎无变化 */}
             {teamData.heroDescription && (
               <motion.p
                 initial={{ opacity: 0, y: 30 }}
                 animate={{ opacity: 1, y: 0 }}
                 transition={{ duration: 0.7, delay: 0.5, ease: EASE_OUT }}
-                className="text-lg sm:text-xl text-text-secondary/70 max-w-2xl leading-relaxed mb-12 sm:mb-14"
+                className="text-lg sm:text-xl text-text-secondary/80 max-w-2xl leading-relaxed mb-12 sm:mb-14"
               >
                 {teamData.heroDescription}
               </motion.p>
diff --git a/src/app/globals.css b/src/app/globals.css
index d444eb6..3d38703 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -1278,6 +1278,17 @@ p, li, span {
 /* WCAG 2.5.5 (AAA): 44×44px 触控目标仅作用于移动端导航/页眉/页脚交互元素。
    原全局选择器会撑大正文行内链接，破坏排版节奏与组件自有的尺寸控制。 */
 @media (max-width: 768px) {
+  /* MobileTabBar 是 fixed bottom-0 高度 64px，需给 main 与 footer 都留出安全区
+     防止正文/页脚被遮挡（"联系我们"等页脚内链接被截问题）。
+     使用 calc + env(safe-area-inset-bottom) 兼容刘海屏/小白条。
+     选择器同时匹配 <main> 与 div[role="main"]（marketing layout 当前用后者）。 */
+  main,
+  [role="main"] {
+    padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px));
+  }
+  footer {
+    padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px));
+  }
   nav a,
   nav button,
   header a,
diff --git a/src/components/detail/solution-service-card.tsx b/src/components/detail/solution-service-card.tsx
index e7cdb96..dafb866 100644
--- a/src/components/detail/solution-service-card.tsx
+++ b/src/components/detail/solution-service-card.tsx
@@ -125,7 +125,7 @@ export function ServiceCard({ service }: ServiceCardProps) {
       <Link href={`/services/${service.id}`} className="block">
         <div className="relative h-full rounded-2xl bg-bg-secondary border border-border-primary overflow-hidden hover:border-blue-300 hover:shadow-lg hover:-translate-y-1 transition-all duration-300">
           <div className="p-8">
-            <div className="w-14 h-14 rounded-2xl bg-gradient-to-br from-[var(--color-accent-blue)] to-[#1d4ed8] flex items-center justify-center mb-5 shadow-md shadow-blue-500/20 group-hover:scale-110 transition-transform">
+            <div className="w-14 h-14 rounded-2xl bg-gradient-to-br from-[var(--color-accent-blue)] to-[#1d4ed8] flex items-center justify-center mb-5 shadow-md shadow-brand group-hover:scale-110 transition-transform">
               <Cpu className="w-7 h-7 text-white" />
             </div>
 
diff --git a/src/components/layout/footer.tsx b/src/components/layout/footer.tsx
index 2b45f09..36698fb 100644
--- a/src/components/layout/footer.tsx
+++ b/src/components/layout/footer.tsx
@@ -146,7 +146,7 @@ export function Footer() {
             >
               {config.icp}
             </a>
-            <span className="hidden sm:inline text-gray-500">|</span>
+            <span className="hidden sm:inline text-text-hint">|</span>
             <a
               href="https://beian.mps.gov.cn/#/query/webSearch?code=51010602003285"
               target="_blank"