/* ========================================================
   CCC - NORDIC MINIMALIST & FRAMELESS 3C STYLESHEET
   ======================================================== */

/* 1. 首页 Hero 板块 (纯白简约无边框) */
.hero-minimal {
    padding: 70px 0 50px;
    text-align: center;
    background: radial-gradient(circle at 50% 20%, #f7f7fa 0%, #ffffff 70%);
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-light);
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.15;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 680px;
    margin: 0 auto 36px;
    font-weight: 400;
}

.hero-cta-group {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
}

.btn-primary {
    background: var(--text-dark);
    color: #fff !important;
    padding: 13px 32px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.25s;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #000;
    transform: translateY(-2px);
    box-shadow: var(--shadow-float);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-dark) !important;
    padding: 13px 32px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.25s;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-secondary:hover {
    background: #e8e8ed;
}

/* 2. 分类横向胶囊导航 (Category Filter Tabs) */
.category-tabs-wrap {
    margin: 30px 0 24px;
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 8px;
}

.category-tabs-wrap::-webkit-scrollbar {
    display: none;
}

.category-tabs {
    display: inline-flex;
    gap: 10px;
}

.cat-tab-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    background: var(--bg-light);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.2s ease;
}

.cat-tab-item:hover {
    background: #e8e8ed;
}

.cat-tab-item.active {
    background: var(--text-dark);
    color: #ffffff;
}

/* 3. 纯白无边框产品网格 (Product Grid & Cards) */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
    margin-top: 20px;
}

.product-card {
    background: var(--bg-warm);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-float);
    background: #ffffff;
}

.card-img-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    max-height: 280px;
    background: #ffffff;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    box-sizing: border-box;
}

.card-img-wrap img {
    max-width: 94%;
    max-height: 94%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.product-card:hover .card-img-wrap img {
    transform: scale(1.05);
}

.card-content {
    padding: 18px 20px 22px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    background: #ffffff;
}

.card-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-gray);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.8em;
}

/* ========================================================
   4. 产品详情页 PDP (严格固定图片尺寸与防撑大)
   ======================================================== */
.pdp-wrapper {
    padding: 104px 0 80px;
}

.pdp-grid {
    display: grid;
    /* 桌面端：左侧图片列固定在 340px ~ 480px 之间，绝不过大；右侧自适应 */
    grid-template-columns: minmax(320px, 480px) 1fr;
    gap: 56px;
    align-items: start;
}

/* --- 模块 1: 图片展示模块 (主图 + 缩略图 + 灯箱) --- */
.pdp-gallery {
    position: sticky;
    top: 96px;
    width: 100%;
    max-width: 480px;
    min-width: 0; /* 极其关键：防止 Grid 溢出 */
}

/* 核心优化：固定主图容器最大尺寸与比例，采用 object-fit: contain 防变形 */
.main-image-frame {
    width: 100%;
    max-width: 480px;
    height: 480px; /* 固定高度，杜绝巨幅大图撑爆视窗 */
    max-height: 480px;
    background: #fbfbfd;
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
    cursor: zoom-in;
    box-shadow: var(--shadow-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.main-image-frame img {
    max-width: 92%;
    max-height: 92%;
    width: auto;
    height: auto;
    object-fit: contain; /* 完美自适应居中，绝不拉伸变形，绝不超出容器！ */
    transition: opacity 0.2s ease, transform 0.3s ease;
}

.main-image-frame:hover img {
    transform: scale(1.03);
}

.zoom-hint {
    position: absolute;
    bottom: 14px;
    right: 14px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-gray);
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* 缩略图横排滚动 */
.thumbnail-list {
    display: flex;
    gap: 10px;
    margin-top: 14px;
    width: 100%;
    max-width: 480px;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
    box-sizing: border-box;
}

.thumb-item {
    width: 64px;
    height: 64px;
    min-width: 64px;
    flex-shrink: 0;
    border-radius: 10px;
    overflow: hidden;
    background: #fbfbfd;
    border: 2px solid transparent;
    cursor: pointer;
    opacity: 0.6;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    box-sizing: border-box;
}

.thumb-item.active {
    opacity: 1;
    border-color: var(--text-dark);
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.thumb-item img {
    max-width: 90%;
    max-height: 90%;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* --- 模块 2: SKU 选项模块 (药丸按钮与大图无缝联动) --- */
.pdp-info {
    display: flex;
    flex-direction: column;
    min-width: 0; /* 关键：防止长字符串或内容横向撑开 */
}

/* 极简分类返回链接 (‹ Category) */
.pdp-category-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-gray);
    text-decoration: none;
    margin-bottom: 12px;
    width: fit-content;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
}

.pdp-category-back svg {
    transition: transform 0.2s ease;
}

.pdp-category-back:hover {
    color: var(--text-dark);
}

.pdp-category-back:hover svg {
    transform: translateX(-3px);
}

.pdp-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
    color: var(--text-dark);
    word-break: break-word;
}

/* SKU 区域 */
.sku-section {
    margin: 12px 0 28px;
    padding: 22px;
    background: var(--bg-warm);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.sku-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.sku-label {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sku-current-name {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary-color);
}

.sku-options-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* 药丸胶囊按钮 */
.sku-pill {
    padding: 8px 16px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.sku-pill:hover {
    border-color: var(--text-dark);
    transform: translateY(-1px);
}

.sku-pill.active {
    background: var(--text-dark);
    border-color: var(--text-dark);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.sku-pill .sku-img-preview {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
}

/* --- 模块 3: 规格参数与产品特色描述 --- */
.specs-section {
    margin-bottom: 30px;
}

.section-subtitle {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-dark);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.spec-card {
    padding: 12px 16px;
    background: var(--bg-light);
    border-radius: var(--border-radius-md);
}

.spec-key {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-gray);
    margin-bottom: 4px;
    letter-spacing: 0.3px;
}

.spec-val {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-dark);
    word-break: break-word;
}

/* 特色描述清单 */
.features-box {
    margin-bottom: 32px;
    padding: 22px;
    background: var(--bg-warm);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.feature-item {
    display: flex;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 0.92rem;
    color: #333336;
    line-height: 1.5;
}

.feature-dot {
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
    margin-top: 7px;
    flex-shrink: 0;
}

/* 操作与询盘按钮 */
.pdp-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
}

.btn-quote-main {
    width: 100%;
    padding: 16px;
    background: var(--text-dark);
    color: #ffffff;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s;
    text-align: center;
}

.btn-quote-main:hover {
    background: #000000;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.btn-ali-link {
    width: 100%;
    padding: 13px;
    background: var(--bg-light);
    color: var(--text-dark);
    border: none;
    border-radius: 30px;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-ali-link:hover {
    background: #e5e5ea;
}

/* 询盘模态弹窗 */
.inquiry-modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.inquiry-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.inquiry-modal {
    background: #ffffff;
    border-radius: var(--border-radius-xl);
    max-width: 500px;
    width: 90%;
    padding: 36px;
    position: relative;
    box-shadow: var(--shadow-pop);
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.inquiry-modal-overlay.active .inquiry-modal {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 22px;
    right: 22px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-gray);
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-dark);
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 11px 15px;
    background: var(--bg-light);
    border: 1px solid transparent;
    border-radius: var(--border-radius-md);
    font-size: 0.92rem;
    color: var(--text-dark);
    outline: none;
    transition: all 0.2s;
    box-sizing: border-box;
}

.form-control:focus {
    background: #ffffff;
    border-color: var(--text-dark);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

/* ========================================================
   5. 核心移动端响应式断点 (完美兼容手机设备)
   ======================================================== */
@media (max-width: 850px) {
    .pdp-wrapper {
        padding: 92px 0 50px;
    }
    .pdp-grid {
        grid-template-columns: 100%;
        gap: 28px;
    }
    .pdp-gallery {
        position: static;
        max-width: 100%;
    }
    .main-image-frame {
        max-width: 100%;
        width: 100%;
        height: 75vw; /* 手机端适中高度比例 */
        max-height: 380px;
        min-height: 260px;
        border-radius: 16px;
        padding: 14px;
    }
    .thumbnail-list {
        max-width: 100%;
        gap: 8px;
    }
    .thumb-item {
        width: 54px;
        height: 54px;
        min-width: 54px;
        border-radius: 8px;
    }
    .pdp-title {
        font-size: 1.5rem;
        line-height: 1.25;
        margin-bottom: 16px;
    }
    .specs-grid {
        grid-template-columns: 1fr; /* 手机端单列排版，杜绝文字挤压 */
        gap: 8px;
    }
    .sku-section {
        padding: 18px;
    }
    .hero-title {
        font-size: 2.3rem;
    }
}

/* ========================================================
   6. ABOUT 页面极简高级工业美学样式 (About Us Styles)
   ======================================================== */
.about-hero {
    position: relative;
    width: 100%;
    min-height: 48vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    background: #0f1117;
}

.about-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.about-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
    transform: scale(1.02);
}

.about-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(15, 17, 23, 0.55) 0%, rgba(15, 17, 23, 0.85) 100%);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 2;
}

.about-hero-inner {
    position: relative;
    z-index: 3;
    padding: 56px 0 44px;
    max-width: 860px;
    color: #ffffff;
}

.about-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: #e5e5ea;
    margin-bottom: 24px;
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #30d158;
    box-shadow: 0 0 10px #30d158;
}

.about-hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.6px;
    color: #ffffff;
    margin-bottom: 14px;
}

.about-hero-title span {
    font-size: 1.85rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.72);
}

.about-hero-desc {
    font-size: 1.05rem;
    line-height: 1.6;
    color: #d2d2d7;
    max-width: 680px;
    margin-bottom: 24px;
    font-weight: 400;
}

.about-hero-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    padding: 12px 24px;
    width: fit-content;
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 3px;
}

.meta-val {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
}

.meta-sep {
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.15);
}

/* 品牌宣言板块 */
.manifesto-section {
    padding: 90px 0;
    background: #ffffff;
}

.manifesto-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.manifesto-lead {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.6px;
    color: var(--text-dark);
}

.manifesto-lead span {
    color: var(--primary-color);
}

.manifesto-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.manifesto-item {
    display: flex;
    gap: 18px;
}

.manifesto-num {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1.4;
}

.manifesto-text h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.manifesto-text p {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.65;
}

/* 实力数据大卡片 */
.stats-section {
    padding: 80px 0;
    background: var(--bg-warm);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    background: #ffffff;
    padding: 36px 28px;
    border-radius: var(--border-radius-xl);
    border: 1px solid rgba(0, 0, 0, 0.03);
    box-shadow: var(--shadow-subtle);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-float);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -1px;
    line-height: 1;
    margin-bottom: 10px;
}

.stat-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.stat-desc {
    font-size: 0.86rem;
    color: var(--text-gray);
    line-height: 1.55;
}

/* 四大技术支柱 */
.pillars-section {
    padding: 90px 0;
    background: #ffffff;
}

.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
}

.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.section-title-large {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.8px;
    color: var(--text-dark);
    margin-bottom: 14px;
}

.section-subtitle-large {
    font-size: 1.05rem;
    color: var(--text-gray);
    line-height: 1.6;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.pillar-card {
    background: var(--bg-warm);
    border-radius: var(--border-radius-xl);
    padding: 40px;
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.pillar-card:hover {
    background: #ffffff;
    box-shadow: var(--shadow-float);
    border-color: rgba(0, 0, 0, 0.08);
}

.pillar-index {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--primary-color);
    background: rgba(0, 113, 227, 0.08);
    padding: 4px 10px;
    border-radius: 20px;
    width: fit-content;
    margin-bottom: 20px;
}

.pillar-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.pillar-body {
    font-size: 0.95rem;
    color: #4b5563;
    line-height: 1.7;
    margin-bottom: 20px;
}

.pillar-highlights {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pillar-highlights li {
    font-size: 0.88rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pillar-highlights li::before {
    content: "✓";
    font-weight: 800;
    color: var(--primary-color);
    font-size: 0.8rem;
}

/* OEM/ODM 流程 */
.workflow-section {
    padding: 90px 0;
    background: var(--bg-warm);
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.workflow-card {
    background: #ffffff;
    border-radius: var(--border-radius-lg);
    padding: 30px 20px;
    border: 1px solid rgba(0, 0, 0, 0.03);
    position: relative;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-subtle);
}

.workflow-step {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--border-color);
    line-height: 1;
    margin-bottom: 14px;
}

.workflow-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.35;
}

.workflow-desc {
    font-size: 0.84rem;
    color: var(--text-gray);
    line-height: 1.5;
}

/* 认证与背书 */
.cert-section {
    padding: 70px 0;
    background: #ffffff;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}

.cert-card {
    padding: 24px;
    background: var(--bg-light);
    border-radius: var(--border-radius-md);
}

.cert-name {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.cert-detail {
    font-size: 0.84rem;
    color: var(--text-gray);
}

/* 底部 CTA 板块 */
.about-cta-section {
    padding: 100px 0;
    background: #0f1117;
    color: #ffffff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.about-cta-inner {
    max-width: 680px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.about-cta-title {
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -0.8px;
    margin-bottom: 16px;
}

.about-cta-desc {
    font-size: 1.15rem;
    color: #a1a1a6;
    margin-bottom: 36px;
    line-height: 1.6;
}

.about-cta-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.btn-white {
    background: #ffffff;
    color: #0f1117 !important;
    padding: 15px 36px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.95rem;
    transition: all 0.25s ease;
    display: inline-block;
}

.btn-white:hover {
    background: #e5e5ea;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.15);
}

.btn-trans {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 15px 36px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.25s ease;
    display: inline-block;
}

.btn-trans:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

/* ========================================================
   7. CONTACT 页面科技感与信任体系样式 (Contact Page Styles)
   ======================================================== */
.contact-hero {
    position: relative;
    width: 100%;
    min-height: 64vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    background: #0d1117;
}

.contact-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.contact-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 35%;
    transform: scale(1.02);
}

.contact-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(13, 17, 23, 0.65) 0%, rgba(13, 17, 23, 0.88) 100%);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 2;
}

.contact-hero-inner {
    position: relative;
    z-index: 3;
    padding: 100px 0 60px;
    max-width: 960px;
    color: #ffffff;
}

.contact-hero-title {
    font-size: 3.4rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    color: #ffffff;
    margin-bottom: 20px;
}

.contact-hero-title span {
    color: rgba(255, 255, 255, 0.72);
}

.contact-hero-desc {
    font-size: 1.18rem;
    line-height: 1.7;
    color: #d2d2d7;
    max-width: 780px;
    margin-bottom: 36px;
}

.contact-hero-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--border-radius-lg);
    padding: 16px 28px;
    width: fit-content;
}

/* Contact Main Section */
.contact-section-wrap {
    padding: 80px 0 100px;
    background: #fbfbfd;
}

.contact-main-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.85fr;
    gap: 40px;
    align-items: start;
}

/* Form Card */
.contact-form-card {
    background: #ffffff;
    border-radius: var(--border-radius-xl);
    padding: 44px 48px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.contact-form-header {
    margin-bottom: 32px;
}

.contact-form-title {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.contact-form-subtitle {
    color: var(--text-gray);
    font-size: 0.98rem;
    line-height: 1.5;
}

.form-field-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-check-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 14px;
    margin-bottom: 20px;
}

.form-check-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: #48484a;
    cursor: pointer;
}

.form-check-label input[type="checkbox"] {
    width: 17px;
    height: 17px;
    cursor: pointer;
    accent-color: var(--text-dark);
}

.form-security-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    font-size: 0.84rem;
    color: var(--text-gray);
}

/* Direct Info Card */
.contact-info-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-card {
    background: #ffffff;
    border-radius: var(--border-radius-xl);
    padding: 36px 32px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.info-card-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-channel-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.channel-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.channel-icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--text-dark);
    font-size: 1.15rem;
}

.channel-content {
    display: flex;
    flex-direction: column;
}

.channel-label {
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-gray);
    margin-bottom: 3px;
}

.channel-val {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.45;
}

.channel-val a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.2s;
}

.channel-val a:hover {
    color: #0071e3;
}

.whatsapp-direct-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #25D366;
    color: #ffffff !important;
    padding: 14px 20px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.98rem;
    text-decoration: none;
    margin-top: 10px;
    transition: all 0.25s;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.25);
}

.whatsapp-direct-btn:hover {
    background: #20bd5a;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
    color: #ffffff !important;
}

/* Trust Pillars Section */
.trust-section {
    padding: 90px 0;
    background: #ffffff;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.section-header-center {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}

.section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #0071e3;
    margin-bottom: 10px;
}

.section-headline {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.8px;
    color: var(--text-dark);
    margin-bottom: 14px;
}

.section-subtext {
    font-size: 1.05rem;
    color: var(--text-gray);
    line-height: 1.6;
}

.trust-card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.trust-card {
    background: #fbfbfd;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--border-radius-lg);
    padding: 32px 26px;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.trust-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
}

.trust-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.trust-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.trust-card-desc {
    font-size: 0.92rem;
    color: var(--text-gray);
    line-height: 1.55;
}

/* Certifications Bar */
.cert-section {
    padding: 70px 0;
    background: #0f1117;
    color: #ffffff;
}

.cert-badge-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 18px;
}

.cert-badge-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    padding: 22px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: background 0.25s;
}

.cert-badge-card:hover {
    background: rgba(255, 255, 255, 0.1);
}

.cert-badge-name {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: #ffffff;
    margin-bottom: 4px;
}

.cert-badge-desc {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.3;
}

/* 4-Step Process Section */
.process-section {
    padding: 90px 0;
    background: #fbfbfd;
}

.process-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.process-step-card {
    position: relative;
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--border-radius-lg);
    padding: 32px 24px;
}

.process-step-num {
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: #0071e3;
    margin-bottom: 14px;
    text-transform: uppercase;
}

.process-step-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.process-step-desc {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.5;
}

/* FAQ Section */
.faq-section {
    padding: 90px 0 110px;
    background: #ffffff;
}

.faq-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.faq-item-card {
    background: #fbfbfd;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--border-radius-lg);
    padding: 28px 28px;
}

.faq-question {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.faq-q-mark {
    color: #0071e3;
    font-weight: 800;
}

.faq-answer {
    font-size: 0.94rem;
    color: var(--text-gray);
    line-height: 1.6;
    padding-left: 24px;
}

/* 响应式断点 */
@media (max-width: 850px) {
    .about-hero {
        min-height: 82vh;
    }
    .about-hero-inner {
        padding: 90px 20px 50px;
    }
    .about-hero-title {
        font-size: 2.4rem;
    }
    .about-hero-desc {
        font-size: 1rem;
        margin-bottom: 28px;
    }
    .about-hero-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        width: 100%;
        padding: 18px 20px;
    }
    .contact-hero {
        min-height: 55vh;
    }
    .contact-hero-inner {
        padding: 85px 20px 45px;
    }
    .contact-hero-title {
        font-size: 2.2rem;
    }
    .contact-hero-desc {
        font-size: 0.98rem;
        margin-bottom: 24px;
    }
    .contact-hero-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        width: 100%;
        padding: 16px 20px;
    }
    .contact-main-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .contact-form-card {
        padding: 30px 20px;
    }
    .form-field-grid-2 {
        grid-template-columns: 1fr;
    }
    .trust-card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .cert-badge-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    .process-grid-4 {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .faq-grid-2 {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .meta-sep {
        display: none;
    }
    .manifesto-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .manifesto-lead {
        font-size: 1.7rem;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .stat-card {
        padding: 24px 18px;
    }
    .stat-number {
        font-size: 2.2rem;
    }
    .pillars-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .pillar-card {
        padding: 28px 22px;
    }
    .workflow-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .about-cta-title {
        font-size: 2rem;
    }
    .about-cta-btns {
        flex-direction: column;
    }
}

/* ========================================================
   CRO PHASE 2: CONVERSION RATE OPTIMIZATION STYLES
   ======================================================== */

/* 1. Global Floating WhatsApp Widget */
.floating-whatsapp-wrap {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 12px;
}

.floating-whatsapp-btn {
    width: 56px;
    height: 56px;
    background: #25D366;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.38);
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    text-decoration: none;
    cursor: pointer;
    position: relative;
}

.floating-whatsapp-btn:hover {
    background: #20BA56;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.5);
}

.floating-whatsapp-pulse {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: #25D366;
    opacity: 0.6;
    animation: wa-pulse 2.2s infinite cubic-bezier(0.24, 0, 0.38, 1);
    z-index: -1;
}

@keyframes wa-pulse {
    0% { transform: scale(1); opacity: 0.6; }
    70% { transform: scale(1.5); opacity: 0; }
    100% { transform: scale(1.6); opacity: 0; }
}

.floating-whatsapp-tooltip {
    background: #1d1d1f;
    color: #ffffff;
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    pointer-events: none;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.25s ease;
}

.floating-whatsapp-wrap:hover .floating-whatsapp-tooltip {
    opacity: 1;
    transform: translateX(0);
}

/* 2. Global Quick RFQ Modal */
.quick-rfq-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.quick-rfq-overlay.active {
    display: flex;
    opacity: 1;
}

.quick-rfq-card {
    background: #ffffff;
    width: 100%;
    max-width: 520px;
    border-radius: 24px;
    padding: 32px;
    position: relative;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.2);
    transform: translateY(20px) scale(0.97);
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    max-height: 92vh;
    overflow-y: auto;
}

.quick-rfq-overlay.active .quick-rfq-card {
    transform: translateY(0) scale(1);
}

.quick-rfq-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #f4f4f7;
    border: none;
    font-size: 1.3rem;
    line-height: 1;
    color: #666;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.quick-rfq-close:hover {
    background: #e5e5ea;
    color: #111;
}

.quick-rfq-prod-preview {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    background: #f7f7fa;
    border-radius: 16px;
    margin-bottom: 20px;
    border: 1px solid #ededf2;
}

.quick-rfq-prod-img {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    object-fit: contain;
    background: #ffffff;
    border: 1px solid #e5e5ea;
    flex-shrink: 0;
}

.quick-rfq-prod-info {
    flex: 1;
    min-width: 0;
}

.quick-rfq-prod-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: #1d1d1f;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.quick-rfq-prod-meta {
    font-size: 0.8rem;
    color: #6e6e73;
}

.quick-rfq-status {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    margin-top: 14px;
    display: none;
    text-align: center;
}

.quick-rfq-status.success {
    display: block;
    background: #e6f7ec;
    color: #0d8a3c;
    border: 1px solid #b7ecc6;
}

.quick-rfq-status.error {
    display: block;
    background: #fde8e8;
    color: #c81e1e;
    border: 1px solid #f8b4b4;
}

/* 3. 4 B2B Trust Badges (Details Page) */
.trust-signals-box {
    margin: 28px 0;
    padding: 20px 22px;
    background: #f8f8fb;
    border-radius: 18px;
    border: 1px solid #ebebf0;
}

.trust-signals-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: #86868b;
    margin-bottom: 14px;
}

.trust-signals-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 16px;
}

.trust-signal-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.trust-signal-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
    border: 1px solid #e8e8ed;
    flex-shrink: 0;
}

.trust-signal-text {
    font-size: 0.88rem;
    font-weight: 600;
    color: #1d1d1f;
    line-height: 1.3;
}

.trust-signal-sub {
    font-size: 0.75rem;
    color: #86868b;
    font-weight: 400;
}

/* 4. Typeahead Instant Search */
.typeahead-wrap {
    position: relative;
    width: 100%;
}

.typeahead-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
    border: 1px solid #ebebf0;
    z-index: 1000;
    overflow: hidden;
    display: none;
    max-height: 380px;
    overflow-y: auto;
}

.typeahead-results.active {
    display: block;
}

.typeahead-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-bottom: 1px solid #f4f4f7;
    text-decoration: none;
    transition: background 0.15s ease;
    color: #1d1d1f;
}

.typeahead-item:last-child {
    border-bottom: none;
}

.typeahead-item:hover, .typeahead-item.selected {
    background: #f7f7fa;
}

.typeahead-thumb {
    width: 42px;
    height: 42px;
    border-radius: 8px;
    object-fit: contain;
    background: #fdfdfd;
    border: 1px solid #e8e8ed;
    flex-shrink: 0;
}

.typeahead-content {
    flex: 1;
    min-width: 0;
}

.typeahead-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #1d1d1f;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.typeahead-cat {
    font-size: 0.75rem;
    color: #86868b;
    margin-top: 1px;
}

.typeahead-footer {
    padding: 8px 14px;
    background: #f7f7fa;
    text-align: center;
    font-size: 0.8rem;
    color: #0071e3;
    font-weight: 600;
    cursor: pointer;
    border-top: 1px solid #ededf2;
}

.typeahead-footer:hover {
    text-decoration: underline;
}

/* 5. Mobile Sticky Action Bar */
.mobile-sticky-bar {
    display: none;
}

@media (max-width: 768px) {
    .mobile-sticky-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 68px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-top: 1px solid #e5e5ea;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 16px;
        gap: 12px;
        z-index: 9990;
        box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
    }

    .mobile-sticky-wa {
        flex: 1;
        height: 46px;
        background: #25D366;
        color: #ffffff !important;
        border-radius: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-weight: 600;
        font-size: 0.9rem;
        text-decoration: none;
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.28);
    }

    .mobile-sticky-quote {
        flex: 1.2;
        height: 46px;
        background: #1d1d1f;
        color: #ffffff !important;
        border-radius: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        font-weight: 600;
        font-size: 0.9rem;
        border: none;
        cursor: pointer;
    }

    /* Adjust page padding bottom on mobile to prevent sticky bar overlap */
    body.has-sticky-bar {
        padding-bottom: 76px;
    }

    .floating-whatsapp-wrap {
        bottom: 80px;
        right: 18px;
    }

    .trust-signals-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================================
   GLOBAL CERTIFICATIONS SHOWCASE (简约排版展示)
   ======================================================== */
.cert-showcase-section {
    padding: 70px 0 80px;
    background: #fbfbfd;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.cert-simple-header {
    text-align: center;
    margin-bottom: 36px;
}

.cert-simple-title {
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--text-dark, #1d1d1f);
    letter-spacing: -0.5px;
    margin: 0;
}

.cert-simple-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 22px;
    max-width: 1200px;
    margin: 0 auto;
}

.cert-simple-card {
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    padding: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    flex: 0 0 calc(20% - 18px);
    max-width: 200px;
    min-width: 160px;
    box-sizing: border-box;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cert-simple-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.cert-simple-card img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 6px;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

@media (max-width: 1024px) {
    .cert-simple-card {
        flex: 0 0 calc(33.333% - 16px);
        max-width: 220px;
    }
}

@media (max-width: 640px) {
    .cert-showcase-section {
        padding: 40px 0 50px;
    }
    .cert-simple-title {
        font-size: 1.6rem;
    }
    .cert-simple-grid {
        gap: 12px;
    }
    .cert-simple-card {
        flex: 0 0 calc(50% - 8px);
        min-width: 0;
        max-width: none;
        padding: 8px;
    }
}