/* ==========================================================================
   PPE 主题前端样式 - 参考 Milwaukee Tool 设计语言
   ========================================================================== */

/* 全局变量 */
:root {
    --ppe-primary: #DA291C;        /* Milwaukee 风格工业红 */
    --ppe-primary-dark: #B91D12;
    --ppe-dark: #1A1A1A;           /* 工业深色 */
    --ppe-gray-900: #212529;
    --ppe-gray-700: #495057;
    --ppe-gray-500: #6c757d;
    --ppe-gray-400: #adb5bd;
    --ppe-gray-200: #e9ecef;
    --ppe-gray-100: #f5f6f7;
    --ppe-gray-50: #fafbfc;
    --ppe-accent: #FFC107;         /* 安全警示黄 */
    --ppe-shadow: 0 4px 24px rgba(0,0,0,0.08);
    --ppe-shadow-lg: 0 12px 40px rgba(0,0,0,0.16);

    /* CTA 背景（首页 ppe-cta / Contact 页面 hero 共用） */
    --ppe-cta-bg-image: url('../images/cta-bg.jpg');
}

body {
    font-family: 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    color: var(--ppe-gray-900);
    background: #fff;
}

/* Font Awesome 7 字体声明
   - fa-solid  系列（实心）：font-weight 900
   - fa-regular 系列（描边）：font-weight 400
   - fa-brands 系列（品牌）：font-weight 400
   - 这里直接声明 weight，避免依赖 .fa-solid 等类携带的 CSS 变量
---------------------------------------------------------------- */
@font-face {
    font-family: "Font Awesome 7 Free";
    src: url("../webfonts/fa-solid-900.woff2") format("woff2");
    font-style: normal;
    font-weight: 900;
    font-display: block;
}
@font-face {
    font-family: "Font Awesome 7 Free";
    src: url("../webfonts/fa-regular-400.woff2") format("woff2");
    font-style: normal;
    font-weight: 400;
    font-display: block;
}
@font-face {
    font-family: "Font Awesome 7 Brands";
    src: url("../webfonts/fa-brands-400.woff2") format("woff2");
    font-style: normal;
    font-weight: 400;
    font-display: block;
}

/* 强制覆盖：所有 fa-* 元素使用 Font Awesome 7 字体
   - 每个类直接指定正确的 font-weight（替代依赖 fontawesome.css 的 CSS 变量）
   - 这样 fa-regular / fa-brands 即使没有 fontawesome.css 也能正确渲染
---------------------------------------------------------------- */
.fa, .fas, .fa-solid {
    font-family: "Font Awesome 7 Free" !important;
    font-weight: 900 !important;
    font-style: normal !important;
    line-height: 1 !important;
    display: inline-block !important;
    -webkit-font-smoothing: antialiased !important;
    -moz-osx-font-smoothing: grayscale !important;
    speak: none;
}
.far, .fa-regular {
    font-family: "Font Awesome 7 Free" !important;
    font-weight: 400 !important;
    font-style: normal !important;
    line-height: 1 !important;
    display: inline-block !important;
    -webkit-font-smoothing: antialiased !important;
    -moz-osx-font-smoothing: grayscale !important;
    speak: none;
}
.fab, .fa-brands {
    font-family: "Font Awesome 7 Brands" !important;
    font-weight: 400 !important;
    font-style: normal !important;
    line-height: 1 !important;
    display: inline-block !important;
    -webkit-font-smoothing: antialiased !important;
    -moz-osx-font-smoothing: grayscale !important;
    speak: none;
}

main > .container {
    padding: 70px 15px 20px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.ppe-hero {
    position: relative;
    min-height: 600px;
    color: #fff;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: #1a1a1a;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}

/* 轮播背景层 */
.ppe-hero-carousel .ppe-hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    z-index: 0;
}
.ppe-hero-carousel .ppe-hero-slide-active {
    opacity: 1;
    z-index: 1;
}
.ppe-hero-carousel .ppe-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(26,26,26,0.85) 100%);
    z-index: 2;
    pointer-events: none;
}
.ppe-hero-carousel .ppe-hero-inner {
    z-index: 3;
}
.ppe-hero-carousel .ppe-hero-scroll {
    z-index: 3;
}

/* 轮播指示点 */
.ppe-hero-dots {
    display: flex;
    gap: 10px;
    margin-top: 36px;
}
.ppe-hero-dot {
    width: 36px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}
.ppe-hero-dot-active {
    background: var(--ppe-primary);
    width: 56px;
}
.ppe-hero-dot:hover {
    background: rgba(255,255,255,0.6);
}

.ppe-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(218,41,28,0.25), transparent 50%);
    pointer-events: none;
}

.ppe-hero-inner {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    margin: 0 auto;
    padding: 120px 20px 80px;
}

.ppe-hero-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 4px;
    color: #FFFFFF;
    text-transform: uppercase;
    margin-bottom: 24px;
    padding: 8px 18px;
    background: rgba(255, 193, 7, 0.22);
    border-left: 3px solid #FFC107;
}

.ppe-hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.05;
    margin: 0 0 20px;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.ppe-hero-title span {
    color: var(--ppe-primary);
    display: block;
}

.ppe-hero-subtitle {
    font-size: 20px;
    font-weight: 500;
    color: #FFC107;
    margin-bottom: 24px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.ppe-hero-desc {
    font-size: 17px;
    line-height: 1.7;
    max-width: 620px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 36px;
}

.ppe-hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.ppe-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    font-size: 15px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-radius: 0;
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}

.ppe-btn-primary {
    background-color: #DA291C !important;
    background-image: linear-gradient(135deg, #DA291C 0%, #ff4d3d 100%) !important;
    color: #FFFFFF !important;
    border: 1px solid #DA291C !important;
    box-shadow: 0 6px 18px rgba(218, 41, 28, 0.32);
}
.ppe-btn-primary:hover,
.ppe-btn-primary:focus {
    background-color: #B91D12 !important;
    background-image: linear-gradient(135deg, #B91D12 0%, #DA291C 100%) !important;
    color: #FFFFFF !important;
    border-color: #B91D12 !important;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(218, 41, 28, 0.42);
}

/* 表单内按钮：与 .ppe-input 输入框几何对齐（同 padding/border/字号） */
.ppe-btn-form {
    padding: 14px 16px !important;
    border-width: 1px !important;
    font-size: 0.95rem !important;
    line-height: 1.5 !important;
    text-transform: none;
    letter-spacing: 0.3px;
    font-weight: 600;
    border-radius: 0;
}

.ppe-btn-ghost {
    background-color: transparent !important;
    color: #FFFFFF !important;
    border: 1px solid #FFFFFF !important;
}
.ppe-btn-ghost:hover {
    background-color: #FFFFFF !important;
    color: #1A1A1A !important;
    border-color: #FFFFFF !important;
}

.ppe-hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.7;
    animation: ppe-bounce 2s infinite;
}

@keyframes ppe-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@media (min-width: 1200px) {
    /* 大桌面：占满整个可视高度 */
    .ppe-hero { min-height: 100vh; }
}

@media (min-width: 768px) and (max-width: 1199.98px) {
    /* 平板：占屏幕 80% 高度 */
    .ppe-hero { min-height: 80vh; }
}

@media (max-width: 767.98px) {
    /* 手机：固定最小高度 500px，保证内容可读 */
    .ppe-hero { min-height: 500px; }
    .ppe-hero-title { font-size: 36px; }
    .ppe-hero-subtitle { font-size: 16px; }
    .ppe-hero-desc { font-size: 15px; }
    .ppe-hero-inner { padding: 80px 20px 60px; }
}

/* ==========================================================================
   Section 通用样式
   ========================================================================== */
.ppe-section {
    padding: 100px 0;
    position: relative;
}

.ppe-section-dark {
    background: var(--ppe-dark);
    color: #fff;
}

.ppe-section-gray {
    background: linear-gradient(180deg, var(--ppe-gray-50) 0%, #ffffff 100%);
}

.ppe-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    color: #FFFFFF !important;
    background: #DA291C !important;
    background-color: #DA291C !important;
    text-transform: uppercase;
    margin-bottom: 12px;
    padding: 6px 14px;
}

.ppe-section-title {
    font-size: 44px;
    font-weight: 900;
    line-height: 1.15;
    margin: 0 0 18px;
    text-transform: uppercase;
    letter-spacing: -1px;
    color: var(--ppe-dark);
}

.ppe-section-desc {
    font-size: 17px;
    color: var(--ppe-gray-700);
    max-width: 760px;
    margin: 0 auto 60px;
    line-height: 1.7;
}

.ppe-section-dark .ppe-section-desc {
    color: rgba(255,255,255,0.7);
}

.ppe-section-head {
    text-align: center;
    margin-bottom: 60px;
}

@media (max-width: 768px) {
    .ppe-section { padding: 60px 0; }
    .ppe-section-title { font-size: 28px; }
}

/* ==========================================================================
   产品分类圆形图标
   ========================================================================== */
.ppe-cat-rail {
    margin-top: -80px;
    position: relative;
    z-index: 3;
}

.ppe-cat-rail-inner {
    background: #fff;
    box-shadow: var(--ppe-shadow-lg);
    border-radius: 4px;
    padding: 32px 24px;
}

.ppe-cat-rail-title {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--ppe-gray-700);
    margin-bottom: 20px;
    text-align: center;
}

.ppe-cat-item {
    display: block;
    text-align: center;
    text-decoration: none;
    color: var(--ppe-gray-900);
    transition: all 0.3s ease;
}

.ppe-cat-item-icon {
    width: 110px;
    height: 110px;
    margin: 0 auto 14px;
    background: var(--ppe-gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 3px solid transparent;
    transition: all 0.3s ease;
}

.ppe-cat-item:hover .ppe-cat-item-icon {
    border-color: var(--ppe-primary);
    background: #fff;
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(218,41,28,0.18);
}

.ppe-cat-item-icon img {
    width: 70%;
    height: 70%;
    object-fit: contain;
}

.ppe-cat-item-name {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ppe-cat-item:hover .ppe-cat-item-name {
    color: var(--ppe-primary);
}

/* ==========================================================================
   分类详情页：面包屑、分类 Hero、子分类网格
   ========================================================================== */
.ppe-breadcrumb {
    background: var(--ppe-gray-50);
    padding: 14px 0;
    border-bottom: 1px solid var(--ppe-gray-100);
}
.ppe-breadcrumb .breadcrumb { background: transparent; padding: 0; margin: 0; font-size: 13px; }
.ppe-breadcrumb .breadcrumb a { color: var(--ppe-primary); text-decoration: none; }
.ppe-breadcrumb .breadcrumb a:hover { text-decoration: underline; }
.ppe-breadcrumb .breadcrumb-item.active { color: var(--ppe-gray-700); }

.ppe-cat-hero {
    background: #1a1a1a;
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 80px 0 70px;
    text-align: center;
}
.ppe-cat-hero-inner { max-width: 860px; margin: 0 auto; }
.ppe-cat-hero-title {
    color: #fff;
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    margin: 12px 0 16px;
    letter-spacing: -0.5px;
}
.ppe-cat-hero-desc {
    color: rgba(255,255,255,0.85);
    font-size: 16px;
    line-height: 1.7;
    margin: 0 auto 24px;
    max-width: 720px;
}
.ppe-cat-hero-meta {
    display: inline-flex;
    gap: 28px;
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    flex-wrap: wrap;
    justify-content: center;
}
.ppe-cat-hero-meta i { color: #FFC107; margin-right: 4px; }
@media (max-width: 768px) {
    .ppe-cat-hero { padding: 50px 0 40px; }
    .ppe-cat-hero-title { font-size: 32px; }
    .ppe-cat-hero-desc { font-size: 14px; }
}

/* 分类详情：左图 + 右信息 */
.ppe-cat-detail {
    padding: 48px 0;
    background: #fff;
}
.ppe-cat-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: stretch;
}
.ppe-cat-detail-media {
    position: relative;
    background: var(--ppe-gray-100);
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
}
.ppe-cat-detail-media img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}
.ppe-cat-detail-media-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ppe-gray-400);
    font-size: 4rem;
}
.ppe-cat-detail-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 16px 0;
}
.ppe-cat-detail-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--ppe-dark);
    margin: 12px 0 18px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}
.ppe-cat-detail-desc {
    font-size: 15px;
    line-height: 1.8;
    color: var(--ppe-gray-700);
    margin-bottom: 24px;
    white-space: pre-line;
}
.ppe-cat-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: var(--ppe-gray-600);
    font-size: 14px;
}
.ppe-cat-detail-meta i { color: var(--ppe-primary); margin-right: 4px; }
@media (max-width: 992px) {
    .ppe-cat-detail-grid { grid-template-columns: 1fr; gap: 24px; }
    .ppe-cat-detail-title { font-size: 28px; }
}

.ppe-subcat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 16px 8px;
    background: #fff;
    border: 1px solid var(--ppe-gray-100);
    border-radius: 8px;
    text-decoration: none;
    color: var(--ppe-gray-900);
    transition: all 0.25s ease;
    height: 100%;
}
.ppe-subcat-item:hover {
    border-color: var(--ppe-primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 22px rgba(218,41,28,0.12);
    color: var(--ppe-primary);
}
.ppe-subcat-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--ppe-gray-50);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    overflow: hidden;
}
.ppe-subcat-icon img {
    width: 80%;
    height: 80%;
    object-fit: contain;
}
.ppe-subcat-name {
    font-size: 13px;
    font-weight: 600;
    line-height: 1.3;
}

.ppe-section-head-left {
    text-align: left;
}
.ppe-section-head-left .ppe-section-desc { margin-left: 0; margin-right: 0; }

/* ==========================================================================
   产品分类大卡（Milwaukee 风格）
   ========================================================================== */
.ppe-cat-card {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: 4px;
    background: #000;
    height: 480px;
    text-decoration: none;
    color: #fff;
    transition: all 0.4s ease;
}

.ppe-cat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
    z-index: 1;
    transition: all 0.4s ease;
}

.ppe-cat-card-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.ppe-cat-card:hover .ppe-cat-card-img {
    transform: scale(1.06);
}

.ppe-cat-card:hover::before {
    background: linear-gradient(to top, rgba(218,41,28,0.85) 0%, rgba(0,0,0,0.3) 50%, transparent 100%);
}

.ppe-cat-card-body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 36px 32px;
    z-index: 2;
}

.ppe-cat-card-title {
    font-size: 26px;
    font-weight: 800;
    text-transform: uppercase;
    margin: 0 0 12px;
    letter-spacing: 0.5px;
}

.ppe-cat-card-desc {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255,255,255,0.85);
    margin-bottom: 16px;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.4s ease;
}

.ppe-cat-card:hover .ppe-cat-card-desc {
    max-height: 200px;
    opacity: 1;
}

.ppe-cat-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--ppe-accent);
    border-bottom: 2px solid var(--ppe-accent);
    padding-bottom: 4px;
}

.ppe-cat-card-link::after {
    content: '→';
    transition: transform 0.3s;
}

.ppe-cat-card:hover .ppe-cat-card-link::after {
    transform: translateX(6px);
}

@media (max-width: 768px) {
    .ppe-cat-card { height: 360px; }
    .ppe-cat-card-title { font-size: 20px; }
    .ppe-cat-card-desc { max-height: 200px; opacity: 1; }
}

/* ==========================================================================
   核心数据条
   ========================================================================== */
.ppe-stats {
    background: var(--ppe-primary);
    color: #fff;
    padding: 60px 0;
}

.ppe-stat {
    text-align: center;
    padding: 20px;
    border-right: 1px solid rgba(255,255,255,0.18);
}

.ppe-stat:last-child { border-right: none; }

.ppe-stat-num {
    font-size: 56px;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.ppe-stat-num sup {
    font-size: 24px;
    vertical-align: super;
    margin-left: 2px;
}

.ppe-stat-label {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .ppe-stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.18); }
    .ppe-stat-num { font-size: 40px; }
}

/* ==========================================================================
   产品卡片
   ========================================================================== */
.ppe-product {
    background: #fff;
    border: 1px solid var(--ppe-gray-200);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    height: 100%;
    display: flex;
    flex-direction: column;
    color: var(--ppe-gray-900);
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.ppe-product:hover {
    border-color: var(--ppe-primary);
    box-shadow: 0 18px 40px rgba(218, 41, 28, 0.12);
    transform: translateY(-6px);
    color: var(--ppe-gray-900);
}

.ppe-product-media {
    position: relative;
    aspect-ratio: 1 / 1;
    background: #f8f9fa;
    overflow: hidden;
}

.ppe-product-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.ppe-product:hover .ppe-product-media img {
    transform: scale(1.05);
}

.ppe-product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--ppe-primary);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 2px;
    z-index: 2;
}

.ppe-product-body {
    padding: 18px 18px 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.ppe-product-title {
    font-size: 15px;
    font-weight: 700;
    margin: 0 0 8px;
    line-height: 1.4;
    min-height: 42px;
}

.ppe-product-title a {
    color: var(--ppe-gray-900);
    text-decoration: none;
    transition: color 0.3s;
}

.ppe-product-title a:hover {
    color: var(--ppe-primary);
}

.ppe-product-meta {
    margin-top: auto;
    font-size: 12px;
    color: var(--ppe-gray-500);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 8px;
    border-top: 1px solid var(--ppe-gray-200);
}

.ppe-product-price {
    color: var(--ppe-primary);
    font-weight: 700;
    font-size: 13px;
}

/* ==========================================================================
   行业应用
   ========================================================================== */
.ppe-industry-section {
    background: var(--ppe-gray-100);
    position: relative;
    overflow: hidden;
}

.ppe-industry-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 90% 20%, rgba(218, 41, 28, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 10% 80%, rgba(255, 193, 7, 0.06) 0%, transparent 35%);
    pointer-events: none;
}

.ppe-industry-section .container {
    position: relative;
    z-index: 1;
}

.ppe-industry {
    display: block;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    height: 300px;
    text-decoration: none;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: transform 0.35s cubic-bezier(0.2,0.8,0.2,1), box-shadow 0.35s ease;
}

.ppe-industry:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.18);
}

.ppe-industry-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.2,0.8,0.2,1);
}

.ppe-industry-img-placeholder {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

.ppe-industry:hover .ppe-industry-img {
    transform: scale(1.1);
}

.ppe-industry::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.3) 60%, rgba(0,0,0,0.1) 100%);
    z-index: 1;
    transition: background 0.35s ease;
}

.ppe-industry:hover::after {
    background: linear-gradient(to top, rgba(218,41,28,0.75) 0%, rgba(0,0,0,0.3) 60%, rgba(0,0,0,0.1) 100%);
}

.ppe-industry-body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 24px;
    z-index: 2;
}

.ppe-industry-title {
    font-size: 22px;
    font-weight: 800;
    text-transform: uppercase;
    margin: 0;
    letter-spacing: 0.5px;
}

.ppe-industry-count {
    display: inline-block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--ppe-accent);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 700;
}

.ppe-industry-arrow {
    position: absolute;
    right: 24px;
    bottom: 24px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.35s ease;
}

.ppe-industry:hover .ppe-industry-arrow {
    opacity: 1;
    transform: translateX(0);
    background: var(--ppe-primary);
}

/* ==========================================================================
   信任徽章 / 资质展示
   ========================================================================== */
.ppe-cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 24px;
    align-items: center;
}

.ppe-cert {
    text-align: center;
    padding: 24px 16px;
    background: #fff;
    border: 1px solid var(--ppe-gray-200);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.ppe-cert:hover {
    border-color: var(--ppe-primary);
    transform: translateY(-3px);
    box-shadow: var(--ppe-shadow);
}

.ppe-cert-img {
    max-height: 80px;
    max-width: 100%;
    margin: 0 auto 10px;
    display: block;
    object-fit: contain;
}

.ppe-cert-name {
    font-size: 12px;
    color: var(--ppe-gray-700);
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   询盘 CTA / Hero 背景
   背景：红黑对角渐变 + 工业背景图
   复用：首页 ppe-cta / Contact 页面 hero / 其他需要工业感背景的区块
   ========================================================================== */
.ppe-cta,
.ppe-hero-cta {
    position: relative;
    background:
        linear-gradient(135deg, rgba(15, 17, 21, 0.92) 0%, rgba(218, 41, 28, 0.85) 100%),
        var(--ppe-cta-bg-image) center/cover no-repeat;
    color: #fff;
    background-blend-mode: multiply;
}

.ppe-cta {
    padding: 110px 0 0;
    margin-bottom: 0;
    text-align: center;
}

.ppe-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

/* Contact 等内页顶部 hero 区块（默认高度适中，与表单区视觉分隔） */
.ppe-hero-cta {
    padding: 90px 0 80px;
    text-align: left;
    overflow: hidden;
}

.ppe-hero-cta::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 30%, rgba(255,193,7,0.18) 0%, transparent 50%);
    pointer-events: none;
}

.ppe-hero-cta-inner {
    position: relative;
    z-index: 1;
}

.ppe-hero-cta-eyebrow {
    display: inline-block;
    color: var(--ppe-accent);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 3px solid var(--ppe-accent);
}

.ppe-hero-cta-title {
    color: #fff;
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.ppe-hero-cta-desc {
    color: rgba(255,255,255,0.85);
    font-size: 1.05rem;
    max-width: 640px;
    margin: 0;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .ppe-hero-cta { padding: 60px 0 50px; }
    .ppe-hero-cta-title { font-size: 2rem; }
}

/* ppe-cta 内部加一层底部留白，与 footer 紧贴不产生外距 */
.ppe-cta-inner {
    padding-bottom: 60px;
}

/* site-main 给非首页页面（没有 ppe-cta）留出与 footer 的合理间距 */
.site-main {
    padding-bottom: 60px;
}

/* 当 site-main 最后一个 section 是 ppe-cta 时，让 ppe-cta 紧贴 footer */
.site-main > *:last-child.ppe-cta {
    margin-bottom: -60px;
}

.ppe-cta-title {
    font-size: 48px;
    font-weight: 900;
    text-transform: uppercase;
    margin: 0 0 20px;
    letter-spacing: -0.5px;
}

.ppe-cta-desc {
    font-size: 17px;
    max-width: 640px;
    margin: 0 auto 36px;
    opacity: 0.9;
    line-height: 1.7;
}

.ppe-cta-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 32px;
    margin-bottom: 40px;
}

.ppe-cta-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ppe-cta-feature i {
    color: var(--ppe-accent);
    font-size: 22px;
}

@media (max-width: 768px) {
    .ppe-cta { padding: 60px 0; }
    .ppe-cta-title { font-size: 30px; }
    .ppe-cta-features { gap: 16px; }
}

/* ==========================================================================
   文章卡
   ========================================================================== */
.ppe-article {
    background: #fff;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.ppe-article:hover {
    box-shadow: var(--ppe-shadow-lg);
    transform: translateY(-4px);
}

.ppe-article-media {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--ppe-gray-200);
}

.ppe-article-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.ppe-article:hover .ppe-article-media img {
    transform: scale(1.05);
}

.ppe-article-body {
    padding: 22px 24px 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.ppe-article-date {
    font-size: 12px;
    color: var(--ppe-primary);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.ppe-article-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 0 10px;
}

.ppe-article-title a {
    color: var(--ppe-gray-900);
    text-decoration: none;
}

.ppe-article-title a:hover {
    color: var(--ppe-primary);
}

.ppe-article-excerpt {
    color: var(--ppe-gray-500);
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

/* ==========================================================================
   6 大 PPE 分类 - 全宽白底大图卡
   参考 Milwaukee Tool: 图 + 标题 + 描述 + Learn More
   ========================================================================== */
.ppe-ppe6 {
    padding: 90px 0 80px;
    background: #ffffff;
    position: relative;
}

.ppe-ppe6-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 在 flex 父容器下，标题需占满整行以保证下划线居中 */
.ppe-ppe6-head .ppe-ppe6-title {
    width: 100%;
}

.ppe-ppe6-title {
    font-size: clamp(2rem, 3.4vw, 2.8rem);
    font-weight: 800;
    color: var(--ppe-gray-900);
    margin: 10px 0 14px;
    letter-spacing: 0.5px;
    position: relative;
    display: inline-block;
}

.ppe-ppe6-title::after {
    content: '';
    display: block;
    width: 70px;
    height: 4px;
    background: var(--ppe-primary);
    margin: 14px auto 0;
}

.ppe-ppe6-desc {
    font-size: 1.02rem;
    line-height: 1.7;
    color: var(--ppe-gray-500);
    margin: 0;
}

.ppe-ppe6-grid {
    /* 使用 Bootstrap g-3 / g-md-4 控制间距 */
}

.ppe-ppe6-card {
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border: 1px solid #ececec;
    border-radius: 4px;
    text-decoration: none;
    color: inherit;
    height: 100%;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.ppe-ppe6-card:hover {
    border-color: var(--ppe-primary);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.10);
    transform: translateY(-6px);
    color: inherit;
}

.ppe-ppe6-media {
    position: relative;
    width: 100%;
    padding-top: 70%;      /* 16:11 比例 */
    overflow: hidden;
    background: var(--ppe-gray-50);
}

.ppe-ppe6-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.5s ease;
}

.ppe-ppe6-card:hover .ppe-ppe6-media img {
    transform: scale(1.06);
}

.ppe-ppe6-media-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 50%, rgba(0, 0, 0, 0.45) 100%);
    z-index: 1;
}

.ppe-ppe6-media-icon {
    position: absolute;
    left: 16px;
    bottom: 16px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--ppe-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    z-index: 2;
    box-shadow: 0 4px 14px rgba(218, 41, 28, 0.45);
    transition: transform 0.3s ease;
}

.ppe-ppe6-card:hover .ppe-ppe6-media-icon {
    transform: rotate(-8deg) scale(1.08);
}

.ppe-ppe6-body {
    flex: 1 1 auto;
    padding: 22px 24px 26px;
    display: flex;
    flex-direction: column;
}

.ppe-ppe6-name {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--ppe-gray-900);
    margin: 0 0 10px;
    line-height: 1.3;
    letter-spacing: 0.3px;
    transition: color 0.2s ease;
}

.ppe-ppe6-card:hover .ppe-ppe6-name {
    color: var(--ppe-primary);
}

.ppe-ppe6-intro {
    font-size: 0.94rem;
    line-height: 1.65;
    color: var(--ppe-gray-500);
    margin: 0 0 18px;
    flex: 1 1 auto;
    /* 截断 4 行 */
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ppe-ppe6-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--ppe-primary);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: auto;
}

.ppe-ppe6-more i {
    transition: transform 0.25s ease;
}

.ppe-ppe6-card:hover .ppe-ppe6-more i {
    transform: translateX(6px);
}

@media (max-width: 768px) {
    .ppe-ppe6 { padding: 60px 0 50px; }
    .ppe-ppe6-head { margin-bottom: 36px; }
    .ppe-ppe6-body { padding: 18px 20px 22px; }
    .ppe-ppe6-name { font-size: 1.2rem; }
}

/* ==========================================================================
   Customize Your PPE - 定制服务区块
   浅色背景 + 白色卡片 + 工业红强调，大气现代
   ========================================================================== */
.ppe-customize {
    position: relative;
    padding: 100px 0 90px;
    background: var(--ppe-gray-100);
    overflow: hidden;
}

.ppe-customize-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 90% 10%, rgba(218, 41, 28, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 5% 90%, rgba(255, 193, 7, 0.10) 0%, transparent 35%);
    pointer-events: none;
}

.ppe-customize-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.025) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}

.ppe-customize-inner {
    position: relative;
    z-index: 1;
}

.ppe-customize-head {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 64px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ppe-eyebrow-accent {
    color: #FFFFFF !important;
    background: linear-gradient(135deg, #DA291C 0%, #ff4d3d 100%) !important;
    background-color: #DA291C !important;
    padding: 10px 24px;
    border-radius: 4px;
    display: inline-block;
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 4px;
    box-shadow: 0 6px 18px rgba(218, 41, 28, 0.28);
    border: none;
}

/* 询盘 CTA 区块内的眉签：保留与"定制服务"完全相同的胶囊外形，
   但因背景为深色渐变，把文字与边框调整为亮色以保证可读性 */
.ppe-eyebrow-cta {
    color: #FFFFFF;
    background: rgba(255, 193, 7, 0.18);
    border: 1px solid rgba(255, 193, 7, 0.5);
    font-weight: 800;
}

/* 在 flex 父容器下，标题需占满整行以保证下划线居中 */
.ppe-customize-head .ppe-customize-title {
    width: 100%;
}

.ppe-customize-title {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    font-weight: 800;
    letter-spacing: 1px;
    margin: 18px 0 18px;
    color: var(--ppe-dark);
    position: relative;
    display: inline-block;
}

.ppe-customize-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--ppe-primary) 0%, var(--ppe-accent) 100%);
    margin: 20px auto 0;
    border-radius: 2px;
}

.ppe-customize-desc {
    font-size: 1.08rem;
    line-height: 1.75;
    color: var(--ppe-gray-700);
    margin: 0;
}

.ppe-customize-grid {
    margin-bottom: 56px;
}

.ppe-customize-item {
    position: relative;
    background: #fff;
    border: 1px solid var(--ppe-gray-200);
    border-radius: 12px;
    padding: 52px 32px 40px;
    text-align: center;
    height: 100%;
    transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.ppe-customize-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--ppe-primary) 0%, var(--ppe-primary-dark) 100%);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.ppe-customize-item::after {
    content: '';
    position: absolute;
    right: -40px;
    bottom: -40px;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(218, 41, 28, 0.06) 0%, transparent 70%);
    pointer-events: none;
    transition: transform 0.4s ease;
}

.ppe-customize-item:hover {
    border-color: rgba(218, 41, 28, 0.3);
    transform: translateY(-8px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12);
}

.ppe-customize-item:hover::before {
    transform: scaleX(1);
}

.ppe-customize-item:hover::after {
    transform: scale(1.4);
}

.ppe-customize-step {
    position: absolute;
    top: 18px;
    right: 22px;
    font-size: 2.6rem;
    font-weight: 900;
    color: var(--ppe-gray-100);
    line-height: 1;
    font-family: 'Arial Black', 'Helvetica', sans-serif;
    letter-spacing: -2px;
    z-index: 0;
    transition: color 0.35s ease;
}

.ppe-customize-item:hover .ppe-customize-step {
    color: rgba(218, 41, 28, 0.12);
}

.ppe-customize-icon {
    position: relative;
    z-index: 1;
    width: 88px;
    height: 88px;
    margin: 0 auto 26px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--ppe-primary) 0%, var(--ppe-primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2.4rem;
    box-shadow: 0 12px 28px rgba(218, 41, 28, 0.32);
    transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), border-radius 0.35s ease;
}

.ppe-customize-item:hover .ppe-customize-icon {
    transform: rotate(-6deg) scale(1.06);
    border-radius: 50%;
}

.ppe-customize-item-title {
    position: relative;
    z-index: 1;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1.2px;
    color: var(--ppe-dark);
    margin: 0 0 8px;
}

.ppe-customize-item-sub {
    position: relative;
    z-index: 1;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ppe-primary);
    margin: 0 0 18px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ppe-customize-item-desc {
    position: relative;
    z-index: 1;
    font-size: 0.96rem;
    line-height: 1.75;
    color: var(--ppe-gray-700);
    margin: 0;
}

.ppe-customize-cta {
    text-align: center;
    padding-top: 12px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 28px;
}

.ppe-customize-link {
    color: var(--ppe-gray-700);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.ppe-customize-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 0;
    height: 2px;
    background: var(--ppe-primary);
    transition: width 0.3s ease;
}

.ppe-customize-link:hover {
    color: var(--ppe-primary);
}

.ppe-customize-link:hover::after {
    width: 100%;
}

.ppe-customize-link i {
    transition: transform 0.2s ease;
}

.ppe-customize-link:hover i {
    transform: translateX(4px);
}

@media (max-width: 768px) {
    .ppe-customize { padding: 70px 0 60px; }
    .ppe-customize-item { padding: 44px 24px 32px; }
    .ppe-customize-head { margin-bottom: 44px; }
    .ppe-customize-step { font-size: 2.2rem; top: 14px; right: 16px; }
    .ppe-customize-icon { width: 76px; height: 76px; font-size: 2rem; }
}

/* ==========================================================================
   输入框统一样式 - 直角硬朗工业风
   首页 Quick Inquiry / Contact 页面共用
   ========================================================================== */
.ppe-input,
.ppe-form .form-control,
input.ppe-input,
textarea.ppe-input,
.ppe-form input.form-control,
.ppe-form textarea.form-control,
.ppe-form select.form-control {
    border-radius: 0 !important;
    padding: 14px 16px !important;
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
    color: var(--ppe-gray-900);
    font-size: 0.95rem;
    line-height: 1.5;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    width: 100%;
    display: block;
    box-shadow: none;
}

.ppe-input:focus,
.ppe-form .form-control:focus,
input.ppe-input:focus,
textarea.ppe-input:focus,
.ppe-form input.form-control:focus,
.ppe-form textarea.form-control:focus,
.ppe-form select.form-control:focus {
    border-color: var(--ppe-primary);
    box-shadow: 0 0 0 3px rgba(218, 41, 28, 0.12);
    outline: 0;
    background-color: #ffffff;
}

.ppe-input::placeholder,
.ppe-form .form-control::placeholder {
    color: #adb5bd;
    opacity: 1;
}

.ppe-form textarea.form-control,
textarea.ppe-input {
    min-height: 120px;
    resize: vertical;
}

/* 表单 label 样式 */
.ppe-form .form-label,
.ppe-form .control-label {
    font-weight: 600;
    color: var(--ppe-gray-900);
    margin-bottom: 14px;
    font-size: 0.92rem;
}

.ppe-form .form-group {
    margin-bottom: 1.5rem;
}

.ppe-form .help-block {
    color: #dc3545;
    font-size: 0.85rem;
    margin-top: 4px;
}

/* ==========================================================================
   工具类
   ========================================================================== */
.text-ppe-primary { color: var(--ppe-primary) !important; }
.bg-ppe-primary { background-color: var(--ppe-primary) !important; }
.bg-ppe-dark    { background-color: var(--ppe-dark) !important; }

/* ==========================================================================
   全局响应式适配（手机/平板/桌面）
   ========================================================================== */

/* --- 1) 全局：图片/视频/表格防止溢出 --- */
img, video, svg { max-width: 100%; height: auto; }
table { max-width: 100%; }
.site-main { overflow-x: hidden; }

/* --- 2) 桌面（>= 1200px）：保持现有设计 --- */

/* --- 3) 平板（768 ~ 1199.98px）--- */
@media (max-width: 1199.98px) {
    .ppe-hero { min-height: 80vh; }
    .ppe-hero-title { font-size: 52px; }
    .ppe-section { padding: 70px 0; }
    .ppe-ppe6, .ppe-customize { padding: 70px 0 60px; }
    .ppe-section-title { font-size: 36px; }
    .ppe-cat-card { height: 400px; }
    .ppe-cta { padding: 70px 0 0; }
    .ppe-cta-title { font-size: 40px; }
    .ppe-stat-num { font-size: 48px; }
    main > .container { padding: 50px 15px 20px; }
}

/* --- 4) 平板竖屏（768 ~ 991.98px）--- */
@media (max-width: 991.98px) {
    /* 顶部 header：联系方式简化、admin/login 等下移 */
    .site-header-top > .container > .d-flex {
        flex-wrap: wrap;
        gap: 6px 0;
        font-size: 12px;
    }
    .site-header-top > .container > .d-flex > div:last-child {
        width: 100%;
        justify-content: flex-end;
    }
    /* 导航条按钮缩小 */
    .navbar .btn { padding: 6px 10px; font-size: 12px; }
    /* hero */
    .ppe-hero-title { font-size: 44px; }
    .ppe-hero-inner { padding: 100px 20px 60px; }
    /* 分类圆形：3 列 */
    .ppe-cat-rail-inner .row > [class*="col-"] { flex: 0 0 33.333%; max-width: 33.333%; }
    /* 分类大卡：2 列（bootstrap 自带 col-md-6） */
    /* 行业 / 文章 / 产品：2 列 */
    /* footer：4 列变 2 列 */
    .site-footer .col-md-3,
    .site-footer .col-md-2,
    .site-footer .col-md-4 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

/* --- 5) 手机横屏（576 ~ 767.98px）--- */
@media (max-width: 767.98px) {
    .ppe-hero { min-height: 520px; }
    .ppe-hero-title { font-size: 36px; }
    .ppe-hero-subtitle { font-size: 16px; }
    .ppe-hero-desc { font-size: 15px; }
    .ppe-hero-inner { padding: 80px 18px 50px; }
    .ppe-hero-eyebrow { font-size: 11px; letter-spacing: 3px; padding: 5px 12px; }
    .ppe-hero-actions { gap: 10px; }
    .ppe-btn { padding: 12px 22px; font-size: 13px; letter-spacing: 1px; }

    .ppe-section { padding: 50px 0; }
    .ppe-section-head { margin-bottom: 36px; }
    .ppe-section-title { font-size: 26px; }
    .ppe-section-desc { font-size: 15px; margin-bottom: 36px; }
    .ppe-eyebrow { font-size: 11px; letter-spacing: 2px; }
    .ppe-eyebrow-accent { font-size: 14px; letter-spacing: 3px; padding: 6px 16px; }

    /* 顶部条：电话邮箱仅图标 / 仅显示重要项 */
    .site-header-top { display: none; }
    /* 导航 brand 字体小 */
    .navbar-brand { font-size: 1rem; }
    .navbar-brand img { height: 28px; }

    /* 分类圆形：2 列 */
    .ppe-cat-rail { margin-top: -40px; }
    .ppe-cat-rail-inner { padding: 20px 12px; }
    .ppe-cat-rail-title { font-size: 12px; letter-spacing: 1px; margin-bottom: 14px; }
    .ppe-cat-rail-inner .row > [class*="col-"] { flex: 0 0 33.333%; max-width: 33.333%; }
    .ppe-cat-item-icon { width: 70px; height: 70px; }
    .ppe-cat-item-name { font-size: 11px; }

    /* 分类大卡：单列 */
    .ppe-cat-card { height: 320px; }
    .ppe-cat-card-title { font-size: 20px; }
    .ppe-cat-card-body { padding: 24px 20px; }

    /* 核心数据条：堆叠 */
    .ppe-stats { padding: 30px 0; }
    .ppe-stat { padding: 18px 10px; border-bottom: 1px solid rgba(255,255,255,0.18); }
    .ppe-stat:last-child { border-bottom: none; }
    .ppe-stat-num { font-size: 36px; }
    .ppe-stat-label { font-size: 11px; }

    /* PPE6 大图卡 */
    .ppe-ppe6 { padding: 50px 0 40px; }
    .ppe-ppe6-head { margin-bottom: 30px; }
    .ppe-ppe6-name { font-size: 1.1rem; }
    .ppe-ppe6-intro { font-size: 0.88rem; -webkit-line-clamp: 3; }
    .ppe-ppe6-body { padding: 16px 18px 20px; }

    /* Customize */
    .ppe-customize { padding: 56px 0 48px; }
    .ppe-customize-head { margin-bottom: 36px; }
    .ppe-customize-item { padding: 38px 22px 28px; }
    .ppe-customize-item-title { font-size: 1.15rem; }
    .ppe-customize-item-desc { font-size: 0.88rem; }
    .ppe-customize-step { font-size: 2rem; top: 12px; right: 14px; }
    .ppe-customize-icon { width: 68px; height: 68px; font-size: 1.8rem; border-radius: 16px; margin-bottom: 20px; }
    .ppe-customize-cta { gap: 16px; flex-direction: column; }
    .ppe-customize-title { letter-spacing: 0.5px; }

    /* 行业 */
    .ppe-industry { height: 220px; }
    .ppe-industry-title { font-size: 18px; }
    .ppe-industry-body { padding: 18px; }

    /* 产品卡 */
    .ppe-product-body { padding: 14px 14px 16px; }
    .ppe-product-title { font-size: 14px; min-height: 38px; }
    .ppe-product-meta { font-size: 11px; }

    /* 证书 */
    .ppe-cert { padding: 18px 10px; }
    .ppe-cert-img { max-height: 60px; }

    /* CTA */
    .ppe-cta { padding: 50px 0 0; }
    .ppe-cta-title { font-size: 26px; }
    .ppe-cta-desc { font-size: 15px; }
    .ppe-cta-features { gap: 14px; }
    .ppe-cta-feature { font-size: 12px; }
    .ppe-cta-feature i { font-size: 18px; }
    .ppe-cta-inner { padding-bottom: 40px; }

    /* 文章 */
    .ppe-article-body { padding: 16px 18px 18px; }
    .ppe-article-title { font-size: 15px; }
    .ppe-article-excerpt { font-size: 13px; }

    /* Hero CTA（Contact 页面） */
    .ppe-hero-cta { padding: 50px 0 40px; text-align: center; }
    .ppe-hero-cta-title { font-size: 1.7rem; }
    .ppe-hero-cta-desc { font-size: 0.95rem; }
    .ppe-hero-cta-eyebrow { font-size: 0.75rem; }

    /* footer */
    .site-footer { padding-top: 40px !important; }
    .site-footer .col-md-3,
    .site-footer .col-md-2,
    .site-footer .col-md-4 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    .site-footer hr { margin: 20px 0 15px; }
    .site-footer .d-flex.justify-content-between { flex-direction: column; gap: 8px; text-align: center; }
    .site-footer .newsletter-form { flex-wrap: wrap; }
    .site-footer .newsletter-form input { flex: 1 1 100%; margin-bottom: 8px; border-radius: 0.4rem; }
    .site-footer .newsletter-form .btn { border-radius: 0.4rem; }

    /* 表单 */
    .ppe-form .form-group { margin-bottom: 1.1rem; }
    .ppe-form .ppe-input { font-size: 0.95rem; padding: 12px 14px; }
    .ppe-form .ppe-btn-form { padding: 12px 14px !important; font-size: 0.9rem !important; }

    /* 通用：容器主区域顶部留白减少 */
    main > .container { padding: 30px 12px 15px; }

    /* 表格横向滚动 */
    .table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
}

/* --- 6) 小手机（< 576px）--- */
@media (max-width: 575.98px) {
    .ppe-hero { min-height: 460px; }
    .ppe-hero-title { font-size: 30px; }
    .ppe-hero-title span { display: inline; }
    .ppe-hero-subtitle { font-size: 14px; letter-spacing: 1.5px; }
    .ppe-hero-desc { font-size: 14px; line-height: 1.6; }
    .ppe-hero-inner { padding: 70px 15px 40px; }
    .ppe-btn { padding: 10px 18px; font-size: 12px; }

    .ppe-section { padding: 40px 0; }
    .ppe-section-title { font-size: 22px; }
    .ppe-section-desc { font-size: 14px; }

    .ppe-cat-rail-inner .row > [class*="col-"] { flex: 0 0 50%; max-width: 50%; }
    .ppe-cat-item-icon { width: 60px; height: 60px; }
    .ppe-cat-item-name { font-size: 10px; }

    .ppe-stat-num { font-size: 30px; }
    .ppe-stat-label { font-size: 10px; }

    .ppe-ppe6-name { font-size: 1rem; }
    .ppe-ppe6-intro { font-size: 0.82rem; -webkit-line-clamp: 2; }

    .ppe-cat-card { height: 260px; }
    .ppe-cat-card-title { font-size: 18px; }
    .ppe-cat-card-body { padding: 20px 16px; }

    .ppe-cta-title { font-size: 22px; }
    .ppe-cta-features { flex-direction: column; gap: 10px; }

    .ppe-industry { height: 180px; }
    .ppe-industry-title { font-size: 16px; }
    .ppe-industry-body { padding: 14px; }

    .ppe-hero-cta-title { font-size: 1.4rem; }
    .ppe-hero-cta-desc { font-size: 0.88rem; }
}

/* --- 7) 横屏（landscape）--- */
@media (max-height: 500px) and (orientation: landscape) {
    .ppe-hero { min-height: 420px; }
    .ppe-hero-inner { padding: 60px 20px 30px; }
}

/* --- 8) 减少动画（无障碍）--- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================================================
   全局前台样式升级 - 更美观、大气
   ========================================================================== */

/* 全局平滑滚动与选区 */
html {
    scroll-behavior: smooth;
    /* 提升全局文字渲染清晰度（更接近国际品牌站的字体呈现） */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}
::selection {
    background: rgba(218, 41, 28, 0.18);
    color: var(--ppe-dark);
}

body {
    font-family: 'Inter', 'Helvetica Neue', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    letter-spacing: 0.01em;
}

/* 顶部信息条升级 */
.site-header-top {
    background: linear-gradient(90deg, #1A1A1A 0%, #2c2c2c 100%) !important;
    border-bottom: 1px solid rgba(255,255,255,0.08) !important;
    color: #ffffff !important;
    font-size: 0.82rem;
    letter-spacing: 0.3px;
}
.site-header-top > .container > div:first-child,
.site-header-top > .container > div:first-child > *,
.site-header-top > .container > div:last-child > .dropdown > a,
.site-header-top > .container > div:last-child > a {
    color: #ffffff !important;
}
.site-header-top > .container > div:last-child > .dropdown > a > i.bi {
    color: var(--ppe-primary) !important;
}
.site-header-top .dropdown-menu {
    color: #1a1a1a !important;
}
.site-header-top .dropdown-item {
    color: #1a1a1a !important;
}
.site-header-top a {
    transition: color 0.2s ease;
}
.site-header-top a:hover {
    color: var(--ppe-accent) !important;
}
.site-header-top .bi {
    color: var(--ppe-primary);
    margin-right: 0.25rem;
}
.site-header-top .dropdown-menu {
    background: #ffffff !important;
    border: 1px solid var(--ppe-gray-100);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
    border-radius: 0.6rem;
    padding: 0.4rem 0;
    margin-top: 0.5rem !important;
    min-width: 180px;
    color: #1a1a1a !important;
}
.site-header-top .dropdown-menu::before {
    content: "";
    position: absolute;
    top: -6px;
    right: 16px;
    width: 12px;
    height: 12px;
    background: #ffffff;
    border-top: 1px solid var(--ppe-gray-100);
    border-left: 1px solid var(--ppe-gray-100);
    transform: rotate(45deg);
}
.site-header-top .dropdown-item {
    font-size: 0.88rem;
    padding: 0.55rem 1.25rem;
    color: #1a1a1a !important;
    background: transparent;
    transition: background 0.15s ease, color 0.15s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    position: relative;
}
.site-header-top .dropdown-item .bi {
    font-size: 1rem;
    width: 18px;
    text-align: center;
}
.site-header-top .dropdown-item:hover,
.site-header-top .dropdown-item:focus {
    background: rgba(218, 41, 28, 0.08) !important;
    color: var(--ppe-primary) !important;
}
.site-header-top .dropdown-item.active,
.site-header-top .dropdown-item.active:hover,
.site-header-top .dropdown-item.active:focus,
.site-header-top .dropdown-menu .dropdown-item.active,
.site-header-top ul.dropdown-menu li a.dropdown-item.active {
    background: rgba(218, 41, 28, 0.1) !important;
    color: var(--ppe-primary) !important;
    font-weight: 600;
}
.site-header-top .dropdown-item.active::after {
    content: "\f00c";
    font-family: "Font Awesome 7 Free";
    font-weight: 900;
    margin-left: auto;
    font-size: 0.9rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 主导航升级 */
.site-header .navbar {
    padding: 0.75rem 0;
    background: rgba(255,255,255,0.98) !important;
    backdrop-filter: blur(10px);
}
.site-header .navbar-brand {
    font-size: 1.35rem;
    letter-spacing: -0.5px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.site-header .navbar-brand img {
    height: 40px;
    transition: transform 0.3s ease;
}
.site-header .navbar-brand:hover img {
    transform: scale(1.03);
}
.site-header .navbar-nav .nav-link {
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: 0.3px;
    padding: 0.75rem 1rem !important;
    color: #2c2c2c !important;
    position: relative;
    transition: color 0.2s ease;
}
.site-header .navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0.35rem;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: var(--ppe-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}
.site-header .navbar-nav .nav-link:hover,
.site-header .navbar-nav .nav-link.active {
    color: var(--ppe-primary) !important;
}
.site-header .navbar-nav .nav-link:hover::after,
.site-header .navbar-nav .nav-link.active::after {
    transform: scaleX(1);
}
.site-header .navbar-nav .dropdown-menu {
    border: none;
    box-shadow: var(--ppe-shadow-lg);
    border-radius: 0.6rem;
    padding: 0.75rem 0;
    margin-top: 0.5rem;
}
.site-header .navbar-nav .dropdown-item {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.6rem 1.25rem;
    transition: all 0.2s ease;
}
.site-header .navbar-nav .dropdown-item:hover,
.site-header .navbar-nav .dropdown-item:focus {
    background: rgba(218,41,28,0.06);
    color: var(--ppe-primary);
    padding-left: 1.5rem;
}
.site-header .navbar-nav .dropdown-header {
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    font-weight: 700;
}
.site-header .navbar-nav .btn-primary {
    border-radius: 0.4rem;
    padding: 0.55rem 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
    box-shadow: 0 4px 12px rgba(218,41,28,0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}
.site-header .navbar-nav .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(218,41,28,0.4);
}

/* 语言提示条 - 居中友好显示 */
#langNoticeBar {
    background: linear-gradient(90deg, #fffbeb 0%, #fef3c7 50%, #fffbeb 100%) !important;
    border: none !important;
    border-bottom: 1px solid #fde68a !important;
    color: #92400e;
    font-weight: 500;
    justify-content: center;
    text-align: center;
    padding: 10px 16px !important;
}
#langNoticeBar i {
    color: #f59e0b;
}
#langNoticeBar .btn-close {
    position: absolute;
    right: 16px;
}

/* 统一页面标题区（内页大气 Hero） */
.page-hero {
    position: relative;
    padding: 6rem 0 5rem;
    background:
        linear-gradient(135deg, rgba(15, 17, 21, 0.88) 0%, rgba(31, 35, 42, 0.82) 50%, rgba(218, 41, 28, 0.78) 100%),
        url('../images/cta-bg.jpg') center/cover no-repeat;
    background-blend-mode: multiply;
    color: #fff;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    mask-image: linear-gradient(180deg, rgba(0,0,0,0.7), transparent 80%);
    -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.7), transparent 80%);
}
.page-hero::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--ppe-primary), var(--ppe-accent));
}
.page-hero-inner {
    position: relative;
    z-index: 1;
}
.page-hero-eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ppe-accent);
    margin-bottom: 1rem;
    padding: 6px 14px;
    background: rgba(255, 193, 7, 0.12);
    border-left: 3px solid var(--ppe-accent);
}
.page-hero h1 {
    font-size: 3.2rem;
    font-weight: 900;
    letter-spacing: -0.025em;
    line-height: 1.1;
    margin-bottom: 1rem;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}
.page-hero-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 720px;
    line-height: 1.7;
    margin-bottom: 0;
}

/* 面包屑 */
.page-breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
}
.page-breadcrumb .breadcrumb-item a {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    transition: color 0.2s;
}
.page-breadcrumb .breadcrumb-item a:hover {
    color: var(--ppe-accent);
}
.page-breadcrumb .breadcrumb-item.active {
    color: rgba(255,255,255,0.55);
}
.page-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255,255,255,0.4);
}
.page-breadcrumb-light .breadcrumb-item a {
    color: var(--ppe-gray-700);
}
.page-breadcrumb-light .breadcrumb-item a:hover {
    color: var(--ppe-primary);
}
.page-breadcrumb-light .breadcrumb-item.active {
    color: var(--ppe-gray-500);
}
.page-breadcrumb-light .breadcrumb-item + .breadcrumb-item::before {
    color: var(--ppe-gray-400);
}

/* 内容区包裹 */
.page-content {
    padding: 3.5rem 0 5rem;
}
.page-content-gray {
    background: var(--ppe-gray-100);
}

/* ---------------------------------------------------------------- 行业列表页 */
.page-hero-industry {
    padding: 5.5rem 0 4.5rem;
    background:
        linear-gradient(135deg, rgba(15, 17, 21, 0.9) 0%, rgba(31, 35, 42, 0.85) 50%, rgba(218, 41, 28, 0.75) 100%),
        url('../images/cta-bg.jpg') center/cover no-repeat;
    background-blend-mode: multiply;
}

/* 数据条：行业数 / 产品数 / 服务国家 */
.industry-stats-bar {
    background: #fff;
    border-bottom: 1px solid var(--ppe-gray-200);
    padding: 1.5rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}
.industry-stats-bar .row.g-0 {
    border-radius: 0.5rem;
    overflow: hidden;
}
.industry-stat {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    border-right: 1px solid var(--ppe-gray-200);
}
.industry-stat:last-child {
    border-right: none;
}
.industry-stat i {
    font-size: 2rem;
    color: var(--ppe-primary);
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(218, 41, 28, 0.08);
    border-radius: 0.5rem;
}
.industry-stat-num {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--ppe-dark);
}
.industry-stat-label {
    font-size: 0.85rem;
    color: var(--ppe-gray-500);
    margin-top: 0.15rem;
}

/* 行业卡片网格：每行 2 个，更大的展示空间 */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
@media (max-width: 767.98px) {
    .industry-grid {
        grid-template-columns: 1fr;
    }
}

.industry-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--ppe-gray-200);
    border-radius: 1rem;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
    height: 100%;
}
.industry-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.12);
    border-color: var(--ppe-primary);
    color: inherit;
}

.industry-card-media {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--ppe-gray-100);
}
.industry-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.industry-card:hover .industry-card-media img {
    transform: scale(1.08);
}

/* 悬浮时黑色渐变叠加 + 大图标 */
.industry-card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(15, 17, 21, 0.55), rgba(218, 41, 28, 0.45));
    color: #fff;
    font-size: 4.5rem;
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}
.industry-card:hover .industry-card-overlay {
    opacity: 1;
}

/* 左上角小徽章：行业图标 + 标签 */
.industry-card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--ppe-primary);
    border-radius: 2rem;
    font-size: 0.78rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}
.industry-card-badge i {
    font-size: 0.85rem;
}

.industry-card-body {
    padding: 1.75rem 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.industry-card-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--ppe-dark);
    margin: 0 0 0.65rem;
    line-height: 1.3;
}
.industry-card-text {
    color: var(--ppe-gray-500);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0 0 1.25rem;
    flex: 1;
    /* 限制 4 行 */
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.industry-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px dashed var(--ppe-gray-200);
}
.industry-card-count {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--ppe-gray-700);
    font-weight: 500;
}
.industry-card-count i {
    color: var(--ppe-primary);
    font-size: 0.9rem;
}
.industry-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ppe-primary);
    transition: gap 0.25s ease;
}
.industry-card-cta i {
    font-size: 0.8rem;
    transition: transform 0.25s ease;
}
.industry-card:hover .industry-card-cta {
    gap: 0.7rem;
}
.industry-card:hover .industry-card-cta i {
    transform: translateX(3px);
}

/* 底部"未找到您的行业？"CTA */
.industry-cta {
    padding: 4rem 0 5rem;
    background: var(--ppe-gray-100);
}
.industry-cta-inner {
    /* 改为深色单色背景，去掉红色部分，确保白字高对比 */
    background: linear-gradient(135deg, #0f1115 0%, #1f232a 60%, #2a2f38 100%);
    border-radius: 1.25rem;
    padding: 3rem;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}
/* 装饰：右侧淡红色光晕（不抢文字可读性） */
.industry-cta-inner::after {
    content: '';
    position: absolute;
    right: -120px;
    top: -120px;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(218, 41, 28, 0.35) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.industry-cta-text {
    flex: 1 1 320px;
    position: relative;
    z-index: 1;
}
.industry-cta-text h2 {
    font-size: 1.95rem;
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 0.85rem;
    letter-spacing: -0.01em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}
.industry-cta-text p {
    color: #ffffff;
    font-size: 1rem;
    line-height: 1.8;
    margin: 0;
    max-width: 640px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}
.industry-cta .btn {
    flex-shrink: 0;
    padding: 0.85rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 0.5rem;
    background: var(--ppe-primary);
    color: #ffffff;
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    position: relative;
    z-index: 1;
}
.industry-cta .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(218, 41, 28, 0.45);
    color: #ffffff;
    background: #c52416;
}

/* 小屏：单列堆叠 + 边距收紧 */
@media (max-width: 767.98px) {
    .industry-stats-bar {
        padding: 1rem 0;
    }
    .industry-stat {
        padding: 0.5rem 0.75rem;
        border-right: none;
        border-bottom: 1px solid var(--ppe-gray-200);
    }
    .industry-stat:last-child {
        border-bottom: none;
    }
    .industry-stat i {
        font-size: 1.5rem;
        width: 38px;
        height: 38px;
    }
    .industry-stat-num {
        font-size: 1.2rem;
    }
    .industry-stat-label {
        font-size: 0.78rem;
    }
    .industry-card-body {
        padding: 1.25rem 1.25rem 1rem;
    }
    .industry-cta-inner {
        padding: 2rem 1.5rem;
    }
    .industry-cta-text h2 {
        font-size: 1.4rem;
    }
}

/* 统一卡片升级 */

/* ---------------------------------------------------------------- 错误页 */
.error-hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    background:
        linear-gradient(135deg, rgba(15, 17, 21, 0.92) 0%, rgba(31, 35, 42, 0.88) 50%, rgba(218, 41, 28, 0.78) 100%),
        url('../images/cta-bg.jpg') center/cover no-repeat;
    background-blend-mode: multiply;
    padding: 5rem 0 4rem;
}
.error-status-badge {
    display: inline-block;
    font-size: 5.5rem;
    font-weight: 900;
    color: var(--ppe-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
    text-shadow: 0 6px 24px rgba(218, 41, 28, 0.45);
    letter-spacing: -0.04em;
}
.error-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 2.5rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(6px);
}
.error-title {
    color: #fff;
    font-size: 2.4rem;
    font-weight: 800;
    margin: 0.25rem 0 0.75rem;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
.error-hero .page-hero-eyebrow {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(218, 41, 28, 0.25);
    border: 1px solid rgba(218, 41, 28, 0.4);
}

/* 帮助区 */
.error-help-section {
    padding: 4rem 0 5rem;
    background: var(--ppe-gray-100);
}
.error-help-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--ppe-dark);
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
}
.error-search {
    display: flex;
    align-items: center;
    background: #fff;
    border: 0;
    border-radius: 0.75rem;
    padding: 0.4rem 0.4rem 0.4rem 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.error-search:focus-within {
    box-shadow: 0 0 0 0.2rem rgba(218, 41, 28, 0.12), 0 4px 12px rgba(0, 0, 0, 0.08);
}
.error-search i {
    color: var(--ppe-gray-500);
    font-size: 1rem;
    margin-right: 0.6rem;
}
.error-search input {
    flex: 1 1 0;
    min-width: 0;
    width: 100%;
    border: none;
    outline: none;
    background: transparent;
    padding: 0.6rem 0.75rem;
    font-size: 0.95rem;
    color: var(--ppe-dark);
}
.error-search input:focus {
    box-shadow: 0 0 0 0.2rem rgba(218, 41, 28, 0.12);
}
.error-search input::placeholder {
    color: var(--ppe-gray-500);
}
.error-search button {
    flex: 0 0 auto !important;
    min-width: 110px;
    width: auto;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    border: 0 !important;
    background: var(--ppe-primary);
    color: #fff !important;
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1;
    padding: 0.6rem 1.4rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background 0.2s ease;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative;
    z-index: 10;
    white-space: nowrap;
    text-indent: 0;
    overflow: visible;
}
.error-search button:hover {
    background: #c52416;
}

/* 建议链接卡 */
.error-suggestions {
    margin-top: 3rem;
}
.error-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--ppe-dark);
    margin: 0 0 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.error-section-title i {
    color: var(--ppe-primary);
}
.error-link-card {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    background: #fff;
    border: 1px solid var(--ppe-gray-200);
    border-radius: 0.75rem;
    padding: 1.5rem 1.25rem !important;
    text-decoration: none;
    color: inherit;
    height: 100%;
    width: 100%;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.error-link-card > * {
    margin-left: auto !important;
    margin-right: auto !important;
    text-align: center !important;
}
.error-link-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    border-color: var(--ppe-primary);
    color: inherit;
}
.error-link-card i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 0.5rem;
    background: rgba(218, 41, 28, 0.1);
    color: var(--ppe-primary);
    font-size: 1.4rem;
    margin: 0 auto 0.75rem;
    line-height: 1;
    transition: background 0.2s ease, color 0.2s ease;
}
.error-link-card:hover i {
    background: var(--ppe-primary);
    color: #fff;
}
.error-link-label {
    font-weight: 700;
    color: var(--ppe-dark);
    margin-bottom: 0.25rem;
}
.error-link-desc {
    font-size: 0.85rem;
    color: var(--ppe-gray-500);
    line-height: 1.5;
}

/* 故障排查列表 */
.error-troubleshoot {
    margin-top: 2.5rem;
    background: #fff;
    border: 1px solid var(--ppe-gray-200);
    border-radius: 0.75rem;
    padding: 1.5rem 1.75rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}
.error-troubleshoot-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem 1.5rem;
}
.error-troubleshoot-list li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.95rem;
    color: var(--ppe-gray-700);
    line-height: 1.5;
}
.error-troubleshoot-list li i {
    color: #16a34a;
    font-size: 0.85rem;
    flex-shrink: 0;
}

@media (max-width: 767.98px) {
    .error-hero { min-height: auto; padding: 3.5rem 0 3rem; }
    .error-status-badge { font-size: 4rem; }
    .error-icon { width: 70px; height: 70px; font-size: 2rem; }
    .error-title { font-size: 1.75rem; }
    .error-troubleshoot-list { grid-template-columns: 1fr; }
    .error-search { padding: 0.3rem 0.3rem 0.3rem 0.85rem; }
    .error-search input { font-size: 0.9rem; padding: 0.5rem 0.4rem; }
    .error-search button { padding: 0.5rem 1rem; font-size: 0.9rem; }
    .error-troubleshoot { padding: 1.25rem 1rem; }
}
.ppe-card {
    background: #fff;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 1rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    overflow: hidden;
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    height: 100%;
}
.ppe-card-hover:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 45px rgba(0,0,0,0.12);
}
.ppe-card-media {
    position: relative;
    overflow: hidden;
    background: var(--ppe-gray-100);
}
.ppe-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.ppe-card-hover:hover .ppe-card-media img {
    transform: scale(1.06);
}
.ppe-card-body {
    padding: 1.5rem;
}
.ppe-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 0.5rem;
}
.ppe-card-title a {
    color: var(--ppe-dark);
    text-decoration: none;
    transition: color 0.2s;
}
.ppe-card-title a:hover {
    color: var(--ppe-primary);
}
.ppe-card-meta {
    font-size: 0.8rem;
    color: var(--ppe-gray-500);
    margin-bottom: 0.75rem;
}
.ppe-card-text {
    color: var(--ppe-gray-500);
    font-size: 0.92rem;
    line-height: 1.65;
    margin-bottom: 0;
}
.ppe-card-footer {
    padding: 1rem 1.5rem;
    background: rgba(0,0,0,0.02);
    border-top: 1px solid rgba(0,0,0,0.04);
}

/* 小卡片（侧边栏等） */
.ppe-card-sm .ppe-card-body {
    padding: 1.1rem;
}

/* 分页升级 - 基础 */
.pagination {
    gap: 0.35rem;
    margin: 0;
}
.pagination .page-item:not(:first-child) .page-link {
    margin-left: 0;
}
.pagination .page-link {
    border: 1px solid var(--ppe-gray-200);
    border-radius: 0.35rem;
    color: var(--ppe-gray-700);
    font-weight: 500;
    padding: 0.35rem 0.6rem;
    transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
    background: #fff;
    line-height: 1.5;
}
.pagination .page-link:hover {
    color: var(--ppe-primary);
    background: #fff;
    border-color: var(--ppe-primary);
    text-decoration: none;
    transform: none;
    box-shadow: none;
}
.pagination .page-item.active .page-link {
    background: var(--ppe-primary);
    border-color: var(--ppe-primary);
    color: #fff;
    font-weight: 700;
}
.pagination .page-item.disabled .page-link {
    color: var(--ppe-gray-400);
    background: var(--ppe-gray-100);
    border-color: var(--ppe-gray-200);
    pointer-events: none;
    opacity: 0.7;
}

/* ==========================================================================
   增强分页 .ppe-pagination
   - 包含：汇总信息（总数）
   - 首页 / 末页 按钮
   - 简洁无背景、水平居中
   ========================================================================== */
.ppe-pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem 1rem;
    padding: 0.75rem 0;
    margin: 2rem 0 0;
    background: transparent;
}

/* 汇总信息区 */
.ppe-pagination-summary {
    color: var(--ppe-gray-700);
    font-size: 0.92rem;
    letter-spacing: 0.2px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    min-width: 0;
}
.ppe-pagination-summary .bi {
    color: var(--ppe-primary);
    margin-right: 0.25rem;
    font-size: 1rem;
}
.ppe-pagination-summary strong {
    color: var(--ppe-dark);
    font-weight: 800;
    font-size: 1.02rem;
}

/* 导航区 */
.ppe-pagination-nav {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* 升级版分页按钮 */
.pagination-ppe {
    gap: 0.25rem;
    align-items: center;
}
.pagination-ppe .page-link {
    border: 1px solid var(--ppe-gray-200) !important;
    background: #fff !important;
}
.pagination-ppe .page-item.disabled .page-link {
    background: var(--ppe-gray-100) !important;
    border-color: var(--ppe-gray-200) !important;
    color: var(--ppe-gray-400) !important;
}
.pagination-ppe .page-item.active .page-link {
    background: var(--ppe-primary) !important;
    border-color: var(--ppe-primary) !important;
    color: #fff !important;
}
.pagination-ppe .page-link:hover {
    border-color: var(--ppe-primary) !important;
    color: var(--ppe-primary) !important;
    background: #fff !important;
}

/* 跳转输入（当前未启用） */
@media (max-width: 767.98px) {
    .ppe-pagination {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        padding: 0.5rem 0;
        gap: 0.5rem;
    }
    .ppe-pagination-nav {
        justify-content: center;
    }
    .ppe-pagination-summary {
        justify-content: center;
        text-align: center;
        font-size: 0.85rem;
    }
    .pagination-ppe .page-link {
        min-width: 32px;
        padding: 0.3rem 0.5rem;
        font-size: 0.85rem;
    }
    .pagination-ppe .page-item:first-child .page-link,
    .pagination-ppe .page-item:last-child .page-link,
    .pagination-ppe .page-item.prev .page-link,
    .pagination-ppe .page-item.next .page-link {
        padding: 0.3rem 0.4rem;
    }
}

/* 搜索/筛选面板 */
.ppe-filter {
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 6px 24px rgba(0,0,0,0.05);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.ppe-filter-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ppe-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--ppe-primary);
}
.ppe-filter .list-group-item {
    border: none;
    padding: 0.6rem 0;
    color: var(--ppe-gray-700);
    font-weight: 500;
    transition: all 0.2s;
    background: transparent;
}
.ppe-filter .list-group-item:hover,
.ppe-filter .list-group-item.active {
    color: var(--ppe-primary);
    background: transparent;
    padding-left: 0.5rem;
}
.ppe-filter .list-group-item.active {
    font-weight: 700;
}

/* 详情页内容区 */
.ppe-detail {
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    padding: 2rem;
}
.ppe-detail-header {
    margin-bottom: 1.75rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--ppe-gray-200);
}
.ppe-detail-title {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}
.ppe-detail-meta {
    color: var(--ppe-gray-500);
    font-size: 0.88rem;
}
.ppe-detail-body {
    color: var(--ppe-gray-700);
    line-height: 1.8;
    font-size: 1rem;
}
.ppe-detail-body img {
    border-radius: 0.75rem;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    margin: 1rem 0;
}
.ppe-detail-body h2,
.ppe-detail-body h3,
.ppe-detail-body h4 {
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}
.ppe-detail-body ul,
.ppe-detail-body ol {
    padding-left: 1.25rem;
    margin-bottom: 1rem;
}
.ppe-detail-body li {
    margin-bottom: 0.4rem;
}

/* 页脚升级 */
.site-footer {
    background: linear-gradient(135deg, #151515 0%, #1a1a1a 100%) !important;
    position: relative;
}
.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--ppe-primary), var(--ppe-accent));
}
.site-footer h5,
.site-footer h6 {
    color: #fff;
    font-weight: 700;
    margin-bottom: 1.25rem;
    position: relative;
    display: inline-block;
}
.site-footer h5::after,
.site-footer h6::after {
    content: '';
    display: block;
    width: 32px;
    height: 3px;
    background: var(--ppe-primary);
    margin-top: 0.6rem;
    border-radius: 2px;
}
.site-footer a {
    color: rgba(255,255,255,0.75) !important;
    text-decoration: none;
    transition: color 0.2s, padding-left 0.2s;
    display: inline-block;
}
.site-footer a:hover {
    color: #FFC107 !important;
    padding-left: 4px;
}
.site-footer p {
    color: rgba(255,255,255,0.55);
}
.site-footer .newsletter-form .form-control {
    border: none;
    border-radius: 0.4rem 0 0 0.4rem;
    background: rgba(255,255,255,0.08);
    color: #fff;
    /* 允许 input 在 d-flex 容器内按按钮宽度外的剩余空间伸展 */
    flex: 1 1 auto;
    min-width: 0;
    width: auto;
}
.site-footer .newsletter-form .form-control::placeholder {
    color: rgba(255,255,255,0.45);
}
.site-footer .newsletter-form .btn {
    border-radius: 0 0.4rem 0.4rem 0;
    font-weight: 700;
    /* 按钮始终保持单行，按钮宽度由内容决定 */
    flex: 0 0 auto;
    white-space: nowrap;
}

/* 空状态 */
.ppe-empty {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--ppe-gray-500);
}
.ppe-empty-icon {
    font-size: 3.5rem;
    color: var(--ppe-gray-200);
    margin-bottom: 1rem;
}
.ppe-empty-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ppe-gray-700);
    margin-bottom: 0.5rem;
}

/* 徽章 */
.ppe-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 0.35rem 0.7rem;
    border-radius: 0.3rem;
}
.ppe-badge-primary { background: var(--ppe-primary); color: #fff; }
.ppe-badge-accent { background: var(--ppe-accent); color: var(--ppe-dark); }
.ppe-badge-light { background: var(--ppe-gray-100); color: var(--ppe-gray-700); }

/* 标签云 */
.ppe-tags .badge {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.5rem 0.8rem;
    border-radius: 0.4rem;
    background: var(--ppe-gray-100);
    color: var(--ppe-gray-700);
    transition: all 0.2s;
}
.ppe-tags .badge:hover {
    background: var(--ppe-primary);
    color: #fff;
}

/* 按钮增强 */
.btn {
    font-weight: 600;
    letter-spacing: 0.3px;
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary {
    background-color: #DA291C !important;
    background-image: linear-gradient(135deg, #DA291C 0%, #ff4d3d 100%) !important;
    border: 1px solid #DA291C !important;
    color: #FFFFFF !important;
    box-shadow: 0 6px 18px rgba(218, 41, 28, 0.32);
    font-weight: 600;
    letter-spacing: 0.3px;
    padding: 0.6rem 1.4rem;
    transition: all 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}
.btn-primary:hover,
.btn-primary:focus {
    background-color: #B91D12 !important;
    background-image: linear-gradient(135deg, #B91D12 0%, #DA291C 100%) !important;
    border-color: #B91D12 !important;
    color: #FFFFFF !important;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(218, 41, 28, 0.42);
}
.btn-primary:active,
.btn-primary.active {
    transform: translateY(0);
    color: #FFFFFF !important;
}
.btn-primary:disabled,
.btn-primary.disabled {
    color: #FFFFFF !important;
    background-color: #DA291C !important;
    opacity: 0.65;
}
.btn-outline-primary {
    color: #DA291C !important;
    border: 1px solid #DA291C !important;
    background-color: transparent !important;
    font-weight: 600;
    transition: all 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}
.btn-outline-primary:hover {
    background-color: #DA291C !important;
    background-image: none !important;
    border-color: #DA291C !important;
    color: #FFFFFF !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(218, 41, 28, 0.32);
}

/* 列表项增强（与现有 ppe-product / ppe-article 兼容） */
.ppe-product,
.ppe-article,
.ppe-cert {
    border-radius: 1rem;
    box-shadow: 0 6px 24px rgba(0,0,0,0.05);
    border: 1px solid rgba(0,0,0,0.04);
}
.ppe-product:hover,
.ppe-article:hover,
.ppe-cert:hover {
    box-shadow: 0 14px 36px rgba(0,0,0,0.1);
}
.ppe-product-badge {
    border-radius: 0.35rem;
}

/* 响应式调整 */
@media (max-width: 767.98px) {
    .page-hero {
        padding: 3.5rem 0 3rem;
    }
    .page-hero h1 {
        font-size: 1.9rem;
    }
    .page-hero-desc {
        font-size: 0.95rem;
    }
    .page-content {
        padding: 2.5rem 0 3.5rem;
    }
    .ppe-detail {
        padding: 1.25rem;
    }
    .ppe-detail-title {
        font-size: 1.4rem;
    }
}
@media (max-width: 575.98px) {
    .site-header .navbar-brand {
        font-size: 1.1rem;
    }
    .site-header .navbar-brand img {
        height: 32px;
    }
}

/* ==========================================================================
   About 页面样式
   ========================================================================== */
.about-card {
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    padding: 2.5rem;
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.about-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 50px rgba(0,0,0,0.12);
}

.about-image-wrap {
    position: relative;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}
/* 关于我们页面轮播 */
.about-image-wrap .carousel,
.about-image-wrap .carousel-inner,
.about-image-wrap .carousel-item {
    height: 100%;
    min-height: 360px;
    background: #f8f9fa;
}
.about-image-wrap img {
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.about-image-wrap:hover img {
    transform: scale(1.05);
}
.about-image-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 1rem;
    pointer-events: none;
}

.content-body {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #444;
}
.content-body p {
    margin-bottom: 1.25rem;
}
.content-body h2,
.content-body h3,
.content-body h4 {
    color: var(--ppe-dark);
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
}
.content-body h2 {
    font-size: 1.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--ppe-gray-200);
}
.content-body ul,
.content-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}
.content-body li {
    margin-bottom: 0.5rem;
}
.content-body strong {
    color: var(--ppe-primary);
    font-weight: 600;
}
.content-body blockquote {
    border-left: 4px solid var(--ppe-primary);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--ppe-gray-100);
    border-radius: 0 0.5rem 0.5rem 0;
    font-style: italic;
    color: #555;
}

.about-lead {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.7;
    color: var(--ppe-gray-700);
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   Contact 页面样式（统一红色主题）
   ========================================================================== */
.contact-section {
    padding: 3rem 0 5rem;
}

.contact-card {
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    padding: 2rem;
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0,0,0,0.03);
}
.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 50px rgba(0,0,0,0.12);
}
.contact-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--ppe-dark);
    position: relative;
    padding-bottom: 0.75rem;
}
.contact-card-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--ppe-primary), var(--ppe-accent));
    border-radius: 2px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    padding: 1rem;
    margin-bottom: 0.75rem;
    border-radius: 0.75rem;
    transition: background 0.2s ease;
}
.contact-item:hover {
    background: var(--ppe-gray-100);
}
.contact-item-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    background: linear-gradient(135deg, rgba(218,41,28,0.1) 0%, rgba(255,193,7,0.1) 100%);
    color: var(--ppe-primary);
    font-size: 1.1rem;
}
.contact-item-icon.whatsapp {
    background: linear-gradient(135deg, #e6f7ee 0%, #d1f0e0 100%);
    color: #198754;
}
.contact-item-body {
    flex: 1;
    min-width: 0;
}
.contact-item-label {
    display: block;
    font-size: 0.8rem;
    color: var(--ppe-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.2rem;
}
.contact-item-value {
    color: var(--ppe-dark);
    font-weight: 500;
    text-decoration: none;
    word-break: break-word;
}
.contact-item-value:hover {
    color: var(--ppe-primary);
}

.contact-form .form-control {
    border-radius: 0.6rem;
    border: 1.5px solid #ced4da !important;
    padding: 0.75rem 1rem;
    background: #ffffff;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form .form-control:hover {
    border-color: #adb5bd !important;
}
.contact-form .form-control:focus {
    border-color: var(--ppe-primary) !important;
    box-shadow: 0 0 0 0.25rem rgba(218, 41, 28, 0.15);
}
.contact-form .form-label {
    font-weight: 500;
    color: var(--ppe-gray-700);
    margin-bottom: 0.4rem;
}
.contact-form .invalid-feedback {
    font-size: 0.85rem;
}
.contact-form .btn-primary {
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 0.6rem;
    box-shadow: 0 4px 14px rgba(218,41,28,0.35);
    transition: transform 0.2s, box-shadow 0.2s;
}
.contact-form .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(218,41,28,0.45);
}
.contact-form .btn-primary:active {
    transform: translateY(0);
}
.contact-form .text-muted.small {
    font-size: 0.85rem;
}

/* ==========================================================================
   补充缺失样式 & 全局美化增强
   ========================================================================== */

/* 产品卡片增强 */
.product-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}
.product-card .ppe-card-media {
    aspect-ratio: 1 / 1;
    background: var(--ppe-gray-50);
}
.product-card .ppe-card-body {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
}
.product-card .ppe-card-text {
    flex: 1 1 auto;
}
.product-card .ppe-card-footer {
    margin-top: auto;
}

/* 产品详情页缩略图 */
.thumb-btn {
    border: 2px solid var(--ppe-gray-200);
    border-radius: 0.5rem;
    padding: 0;
    overflow: hidden;
    transition: border-color 0.2s ease, transform 0.2s ease;
    background: #fff;
}
.thumb-btn:hover {
    border-color: var(--ppe-primary);
    transform: translateY(-2px);
}
.thumb-btn.active {
    border-color: var(--ppe-primary);
    box-shadow: 0 0 0 3px rgba(218,41,28,0.15);
}

/* 产品详情页 SKU 选项按钮增强 */
.sku-option {
    border-radius: 0.4rem;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.4rem 0.85rem;
    transition: all 0.2s ease;
}
.sku-option.active {
    background: var(--ppe-primary) !important;
    border-color: var(--ppe-primary) !important;
    color: #fff !important;
    box-shadow: 0 4px 10px rgba(218,41,28,0.25);
}

/* 文章详情内容排版 */
.article-content {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--ppe-gray-700);
}
.article-content p {
    margin-bottom: 1.25rem;
}
.article-content h2,
.article-content h3,
.article-content h4 {
    color: var(--ppe-dark);
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 0.85rem;
}
.article-content h2 {
    font-size: 1.6rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--ppe-gray-200);
}
.article-content img {
    border-radius: 0.75rem;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    margin: 1.5rem 0;
    max-width: 100%;
}
.article-content ul,
.article-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}
.article-content li {
    margin-bottom: 0.5rem;
}
.article-content blockquote {
    border-left: 4px solid var(--ppe-primary);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--ppe-gray-100);
    border-radius: 0 0.5rem 0.5rem 0;
    font-style: italic;
    color: var(--ppe-gray-700);
}
.article-content strong {
    color: var(--ppe-primary);
    font-weight: 700;
}
.article-content a {
    color: var(--ppe-primary);
    text-decoration: underline;
    text-decoration-color: rgba(218,41,28,0.3);
    transition: text-decoration-color 0.2s;
}
.article-content a:hover {
    text-decoration-color: var(--ppe-primary);
}

/* 文章详情返回栏 */
.article-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}
.article-nav-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--ppe-gray-700);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.2s;
}
.article-nav-back:hover {
    color: var(--ppe-primary);
}
.article-nav-share {
    display: flex;
    gap: 0.5rem;
}
.article-nav-share a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--ppe-gray-100);
    color: var(--ppe-gray-700);
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.2s ease;
}
.article-nav-share a:hover {
    background: var(--ppe-primary);
    color: #fff;
    transform: translateY(-2px);
}

/* 用户页面表单统一：与联系页 .contact-form 输入框保持一致风格
   - 这里用更高优先级 + !important 覆盖前文 .ppe-input 的"直角工业风"通用规则
---------------------------------------------------------------- */
.ppe-card .ppe-card-body .form-control.ppe-input,
.ppe-card .ppe-card-body input.form-control.ppe-input,
.ppe-card .ppe-card-body textarea.form-control.ppe-input {
    border-radius: 0.6rem !important;
    border: 1.5px solid #ced4da !important;
    padding: 0.75rem 1rem !important;
    background: #ffffff !important;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--ppe-gray-900);
    box-shadow: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.ppe-card .ppe-card-body .form-control.ppe-input:hover {
    border-color: #adb5bd !important;
}
.ppe-card .ppe-card-body .form-control.ppe-input:focus {
    border-color: var(--ppe-primary) !important;
    box-shadow: 0 0 0 0.25rem rgba(218, 41, 28, 0.15) !important;
    outline: 0;
}
.ppe-card .form-label {
    font-weight: 600;
    color: var(--ppe-gray-700);
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}
.ppe-card .form-text {
    font-size: 0.82rem;
    color: var(--ppe-gray-500);
}
.ppe-card .form-check-label {
    font-size: 0.9rem;
    color: var(--ppe-gray-700);
}

/* 用户头像 */
.user-avatar {
    background: linear-gradient(135deg, var(--ppe-primary) 0%, var(--ppe-primary-dark) 100%) !important;
    box-shadow: 0 8px 24px rgba(218,41,28,0.3);
}

/* 行业卡片 Learn More 链接修复 */
.ppe-card .ppe-card-learn-more {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--ppe-primary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 1rem;
    transition: gap 0.2s ease;
}
.ppe-card .ppe-card-learn-more:hover {
    gap: 0.7rem;
}
.ppe-card .ppe-card-learn-more i {
    transition: transform 0.2s ease;
}

/* 证书卡片增强 */
.ppe-card-cert {
    text-align: center;
}
.ppe-card-cert .ppe-card-media {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
}
.ppe-card-cert .ppe-card-media img {
    max-height: 160px;
    width: auto;
    object-fit: contain;
}

/* 详情页表格美化 */
.ppe-detail table.table {
    margin-bottom: 0;
    overflow: hidden;
    border-radius: 0.75rem;
}
.ppe-detail table.table th {
    background: var(--ppe-gray-100);
    font-weight: 600;
    color: var(--ppe-gray-700);
    font-size: 0.9rem;
    padding: 0.85rem 1rem;
    white-space: nowrap;
}
.ppe-detail table.table td {
    padding: 0.85rem 1rem;
    color: var(--ppe-gray-900);
    font-size: 0.95rem;
}
.ppe-detail table.table-striped tbody tr:nth-of-type(odd) {
    background: var(--ppe-gray-50);
}

/* 产品详情页标签页 */
.ppe-detail .nav-tabs {
    border-bottom: 2px solid var(--ppe-gray-200);
    gap: 0.25rem;
}
.ppe-detail .nav-tabs .nav-link {
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--ppe-gray-500);
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.85rem 1.5rem;
    margin-bottom: -2px;
    transition: color 0.2s, border-color 0.2s;
}
.ppe-detail .nav-tabs .nav-link:hover {
    color: var(--ppe-primary);
    border-bottom-color: rgba(218,41,28,0.3);
}
.ppe-detail .nav-tabs .nav-link.active {
    color: var(--ppe-primary);
    border-bottom-color: var(--ppe-primary);
    background: transparent;
}

/* 详情页相关产品/推荐产品标题栏 */
.section-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--ppe-gray-200);
}
.section-bar-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
    color: var(--ppe-dark);
    position: relative;
}
.section-bar-title::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--ppe-primary);
    border-radius: 2px;
}

/* 返回按钮通用 */
.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--ppe-gray-700);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    background: var(--ppe-gray-100);
    transition: all 0.2s ease;
}
.btn-back:hover {
    background: var(--ppe-primary);
    color: #fff;
}

/* 空状态增强 */
.ppe-empty .btn {
    margin-top: 1rem;
}

/* 表单提示文字 */
.form-text {
    color: var(--ppe-gray-500) !important;
    font-size: 0.82rem;
}

/* Bootstrap primary 色覆盖为主题红色 */
a.text-primary {
    color: var(--ppe-primary) !important;
}
a.text-primary:hover {
    color: var(--ppe-primary-dark) !important;
}
.text-primary {
    color: var(--ppe-primary) !important;
}
.btn-success {
    box-shadow: 0 4px 12px rgba(25,135,84,0.25);
}
.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(25,135,84,0.35);
}
.btn-outline-success {
    font-weight: 600;
}
.btn-outline-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(25,135,84,0.2);
}

/* 轮播控制按钮增强 */
.carousel-control-prev,
.carousel-control-next {
    width: 60px;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.carousel:hover .carousel-control-prev,
.carousel:hover .carousel-control-next {
    opacity: 0.9;
}
.carousel-control-prev-icon,
.carousel-control-next-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: rgba(0,0,0,0.4);
    background-size: 60%;
}
.carousel-control-prev-icon:hover,
.carousel-control-next-icon:hover {
    background-color: var(--ppe-primary);
}

/* Alert 圆角统一 */
.alert {
    border-radius: 0.6rem;
}

/* 表单 invalid-feedback */
.invalid-feedback {
    font-size: 0.82rem;
}

/* hr 分隔线 */
hr {
    border-color: var(--ppe-gray-200);
    opacity: 0.8;
}