/* ==========================================
   上海慧彤新材料科技有限公司 - 全新设计系统 v2.0
   色彩方案（CSS变量）：
   - 主色：深蓝 #0d2137
   - 强调红：#d63031
   - 辅助蓝：#0984e3
   - 文字：#1e293b
   - 背景：#f8fafc
   ========================================== */

/* ==========================================
   CSS 设计变量
   ========================================== */
:root {
    --color-primary:    #0d2137;
    --color-primary-light: #1a3a5c;
    --color-accent:     #d63031;
    --color-accent-dark:#b71c1c;
    --color-accent-light: #ef5350;
    --color-blue:       #0984e3;
    --color-blue-light: #74b9ff;
    --color-text:       #1e293b;
    --color-text-muted: #64748b;
    --color-text-light: #94a3b8;
    --color-bg:         #f8fafc;
    --color-bg-card:    #ffffff;
    --color-border:     #e2e8f0;
    --color-border-light: #f1f5f9;

    --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md:  0 4px 16px rgba(0,0,0,.08);
    --shadow-lg:  0 8px 30px rgba(0,0,0,.12);
    --shadow-xl:  0 20px 60px rgba(0,0,0,.15);
    --shadow-accent: 0 8px 25px rgba(214,48,49,.25);

    --radius-sm:  6px;
    --radius-md:  12px;
    --radius-lg:  16px;
    --radius-xl:  24px;
    --radius-full: 9999px;

    --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    --transition-fast: all 0.15s ease;

    --font-base: 'Noto Sans SC', 'Microsoft YaHei', '微软雅黑', 'PingFang SC', sans-serif;
    --container-width: 1240px;
    --nav-height: 72px;
}

/* ==========================================
   基础样式重置 & 全局
   ========================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border-width: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-base);
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg-card);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul, ol { list-style: none; }

button {
    border: none;
    outline: none;
    cursor: pointer;
    font-family: inherit;
}

/* ==========================================
   通用容器和布局
   ========================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 90px 0;
}

.section--alt {
    background-color: var(--color-bg);
}

/* ==========================================
   区块标题
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    background: rgba(214,48,49,.08);
    padding: 5px 14px;
    border-radius: var(--radius-full);
    margin-bottom: 14px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 14px;
    position: relative;
    display: inline-block;
    line-height: 1.3;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-blue));
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-top: 22px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.section-more {
    text-align: center;
    margin-top: 48px;
}

/* ==========================================
   按钮系统
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-align: center;
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff !important;
    box-shadow: 0 4px 14px rgba(214,48,49,.28);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    box-shadow: var(--shadow-accent);
    transform: translateY(-2px);
    color: #fff !important;
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-outline:hover {
    background: var(--color-accent);
    color: #fff;
    transform: translateY(-2px);
}

.btn-white {
    background: #fff;
    color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    background: var(--color-accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.btn-block { display: flex; width: 100%; justify-content: center; }
.btn-full  { display: flex; width: 100%; justify-content: center; }

/* ==========================================
   顶部公告条
   ========================================== */
.top-bar {
    background: var(--color-primary);
    color: rgba(255,255,255,.8);
    font-size: 0.82rem;
    padding: 7px 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.top-bar a { color: rgba(255,255,255,.75); }
.top-bar a:hover { color: #fff; }
.top-bar-contact { display: flex; gap: 20px; }
.top-bar-contact span { display: flex; align-items: center; gap: 6px; }
.top-bar-contact i { color: var(--color-accent); font-size: 0.9rem; }

/* ==========================================
   导航栏
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(13,33,55,.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(255,255,255,.06);
    z-index: 1000;
    transition: var(--transition);
}

.header.scroll-header {
    background: rgba(13,33,55,1);
    box-shadow: 0 4px 20px rgba(0,0,0,.25);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--nav-height);
}

.nav-logo a {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-mark {
    width: 36px;
    height: 36px;
    background: var(--color-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 900;
    color: #fff;
    flex-shrink: 0;
}

.logo-text {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: var(--transition);
    line-height: 1.2;
}

.logo-sub {
    display: block;
    font-size: 0.65rem;
    font-weight: 400;
    color: rgba(255,255,255,.5);
    letter-spacing: 1px;
}

.nav-logo a:hover .logo-text { color: var(--color-accent-light); }

.nav-list {
    display: flex;
    gap: 6px;
    align-items: center;
}

.nav-link {
    color: rgba(255,255,255,.85);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background: rgba(255,255,255,.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.nav-cta {
    background: var(--color-accent);
    color: #fff !important;
    padding: 7px 18px !important;
    border-radius: var(--radius-sm) !important;
}

.nav-cta:hover {
    background: var(--color-accent-dark) !important;
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 26px;
    height: 2.5px;
    background-color: #fff;
    border-radius: var(--radius-full);
    transition: var(--transition);
    display: block;
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px,7px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-7px); }

/* ==========================================
   Hero 主视觉区
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #071626 0%, #0d2137 45%, #112c48 100%);
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 60% 50%, rgba(9,132,227,.12) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 20% 80%, rgba(214,48,49,.1) 0%, transparent 60%);
}

.hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(7,22,38,.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    padding: 60px 20px;
    max-width: 860px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(214,48,49,.15);
    border: 1px solid rgba(214,48,49,.3);
    color: #ff8a80;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 28px;
    animation: fadeInUp .8s ease both;
}

.hero-badge i { font-size: 0.8rem; }

.hero-title {
    font-size: 3.2rem;
    font-weight: 900;
    margin-bottom: 22px;
    line-height: 1.2;
    text-shadow: 0 2px 20px rgba(0,0,0,.3);
    animation: fadeInUp .8s ease .1s both;
}

.hero-title span {
    background: linear-gradient(135deg, #ff8a80, #ff4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 16px;
    color: rgba(255,255,255,.9);
    animation: fadeInUp .8s ease .2s both;
}

.hero-description {
    font-size: 1.05rem;
    margin-bottom: 44px;
    color: rgba(255,255,255,.65);
    line-height: 1.8;
    animation: fadeInUp .8s ease .3s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp .8s ease .4s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,.1);
    animation: fadeInUp .8s ease .5s both;
}

.hero-stat-item { text-align: center; }

.hero-stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.hero-stat-number span { color: var(--color-accent-light); }

.hero-stat-label {
    font-size: 0.82rem;
    color: rgba(255,255,255,.55);
    margin-top: 6px;
    letter-spacing: 0.5px;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,.4);
    font-size: 0.75rem;
    letter-spacing: 1px;
    animation: bounce 2s infinite;
}

.hero-scroll i { font-size: 1.2rem; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(8px); }
}

/* ==========================================
   信任带 (Trust Bar)
   ========================================== */
.trust-bar {
    background: var(--color-primary);
    padding: 22px 0;
    border-bottom: 1px solid rgba(255,255,255,.06);
}

.trust-bar-grid {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,.7);
    font-size: 0.9rem;
}

.trust-item i {
    color: var(--color-accent-light);
    font-size: 1.3rem;
    flex-shrink: 0;
}

.trust-item strong {
    color: #fff;
    display: block;
    font-size: 0.95rem;
}

/* ==========================================
   产品展示卡片
   ========================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.product-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(214,48,49,.2);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-blue));
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover::before { opacity: 1; }

.product-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--color-bg);
    position: relative;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s cubic-bezier(.4,0,.2,1);
}

.product-card:hover .product-image img { transform: scale(1.06); }

.product-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 24px;
}

.product-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
    line-height: 1.4;
    transition: var(--transition);
}

.product-card:hover .product-title { color: var(--color-accent); }

.product-model {
    font-size: 0.82rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: 0.3px;
}

.product-description {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    flex: 1;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 18px;
}

.product-tags .tag {
    background: rgba(9,132,227,.07);
    color: var(--color-blue);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid rgba(9,132,227,.15);
    transition: var(--transition);
}

.product-tags .tag:hover {
    background: var(--color-blue);
    color: #fff;
    border-color: var(--color-blue);
}

.product-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--color-border-light);
}

.btn-detail {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    width: 100%;
    padding: 10px 20px;
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    transition: var(--transition);
    letter-spacing: 0.2px;
}

.btn-detail:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(13,33,55,.18);
}

/* ==========================================
   新闻资讯
   ========================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 48px;
}

.news-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(214,48,49,.15);
}

.news-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.news-card:hover .news-image img { transform: scale(1.08); }

.news-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--color-accent);
    color: #fff;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.news-content {
    padding: 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-title a { color: var(--color-primary); }
.news-title a:hover { color: var(--color-accent); }

.news-excerpt {
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    flex: 1;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 14px;
    border-top: 1px solid var(--color-border-light);
    margin-top: auto;
}

.news-date,
.news-views {
    font-size: 0.8rem;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    gap: 5px;
}

.news-more {
    font-size: 0.82rem;
    color: var(--color-blue);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
}

.news-more:hover { color: var(--color-accent); gap: 8px; }

/* ==========================================
   行业问答 FAQ
   ========================================== */
.faq-container {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.faq-item:hover { box-shadow: var(--shadow-md); }

.faq-item.active {
    border-color: rgba(214,48,49,.25);
    box-shadow: 0 4px 20px rgba(214,48,49,.08);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 28px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover { background: var(--color-bg); }

.faq-q-num {
    width: 32px;
    height: 32px;
    background: rgba(214,48,49,.08);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 800;
    flex-shrink: 0;
    transition: var(--transition);
}

.faq-item.active .faq-q-num {
    background: var(--color-accent);
    color: #fff;
}

.faq-question h3 {
    flex: 1;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    line-height: 1.5;
}

.faq-toggle {
    color: var(--color-text-light);
    font-size: 1rem;
    transition: transform .3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
    color: var(--color-accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
}

.faq-item.active .faq-answer { max-height: 1200px; }

.faq-answer-inner {
    padding: 0 28px 24px 74px;
}

.faq-answer-inner p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.faq-answer-inner ul {
    list-style: none;
    padding: 0;
    margin: 10px 0;
}

.faq-answer-inner ul li {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: 8px;
    padding-left: 18px;
    position: relative;
}

.faq-answer-inner ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-blue);
    font-size: 0.75rem;
    top: 4px;
}

.faq-answer-inner strong { color: var(--color-text); font-weight: 600; }

/* 旧结构兼容 */
.faq-answer p,
.faq-answer ul {
    padding: 0 28px 20px 74px;
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-text-muted);
}

.faq-answer ul li {
    margin-bottom: 8px;
}

/* ==========================================
   应用领域
   ========================================== */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.application-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.application-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(9,132,227,.2);
}

.application-link-wrapper { display: block; text-decoration: none; color: inherit; }

.application-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--color-bg);
}

.application-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.application-card:hover .application-image img { transform: scale(1.08); }

.application-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 18px 20px 8px;
    line-height: 1.4;
}

.application-description {
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin: 0 20px 20px;
}

/* ==========================================
   关于我们（首页板块）
   ========================================== */
.about-content { max-width: 1000px; margin: 0 auto; }

.about-image {
    width: 100%;
    margin-bottom: 48px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img { width: 100%; height: auto; display: block; transition: transform .4s ease; }
.about-image:hover img { transform: scale(1.03); }
.about-text { width: 100%; }

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.stat-item {
    text-align: center;
    padding: 32px 20px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-accent);
    border-color: rgba(214,48,49,.2);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ==========================================
   公司优势板块
   ========================================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advantage-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 34px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.advantage-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent), var(--color-blue));
    border-radius: 0 0 0 var(--radius-lg);
    transform: scaleY(0);
    transition: transform .3s ease;
    transform-origin: bottom;
}

.advantage-card:hover::after { transform: scaleY(1); }

.advantage-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(214,48,49,.15);
}

.advantage-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-accent);
    opacity: 0.65;
    margin-bottom: 12px;
    line-height: 1;
}

.advantage-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.advantage-description {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

/* 关于我们页面中用到的 advantage-icon 变体 */
.advantage-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #fff;
    font-size: 1.6rem;
    transition: transform .4s ease;
}

.advantage-card:hover .advantage-icon { transform: rotateY(180deg); }

/* ==========================================
   联系我们
   ========================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 20px; }

.contact-item {
    display: flex;
    gap: 18px;
    padding: 22px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(9,132,227,.2);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-blue), #2980b9);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #fff;
    font-size: 1.2rem;
}

.contact-details { flex: 1; }
.contact-label { font-size: 1rem; font-weight: 600; color: var(--color-text); margin-bottom: 4px; }
.contact-text { font-size: 0.92rem; color: var(--color-text-muted); }

.contact-form {
    background: var(--color-bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.form-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 28px;
}

.form-group { margin-bottom: 22px; }

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 11px 16px;
    font-size: 0.95rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-family: inherit;
    background: var(--color-bg-card);
    color: var(--color-text);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(9,132,227,.1);
}

.form-textarea { resize: vertical; min-height: 120px; }

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: linear-gradient(160deg, #071626 0%, #0d2137 100%);
    color: #fff;
    padding: 64px 0 0;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-blue), var(--color-accent));
}

.footer-content {
    display: grid;
    grid-template-columns: 2.5fr 1.5fr 1.5fr;
    gap: 56px;
    padding-bottom: 48px;
}

.footer-section { display: flex; flex-direction: column; }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 32px;
    height: 2px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.footer-text {
    font-size: 0.88rem;
    line-height: 1.8;
    color: rgba(255,255,255,.5);
    margin-bottom: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 20px;
}

.footer-links li { font-size: 0.88rem; }

.footer-links a {
    color: rgba(255,255,255,.55);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
    padding: 3px 0;
}

.footer-links a::before {
    content: '›';
    color: var(--color-accent);
    font-weight: 700;
    opacity: 0;
    transition: var(--transition);
}

.footer-links a:hover { color: #fff; padding-left: 6px; }
.footer-links a:hover::before { opacity: 1; }

.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-contact-list li {
    font-size: 0.88rem;
    color: rgba(255,255,255,.55);
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.6;
}

.footer-contact-list i {
    color: var(--color-accent);
    font-size: 0.9rem;
    width: 18px;
    flex-shrink: 0;
    margin-top: 3px;
}

.footer-bottom {
    text-align: center;
    padding: 22px 0;
    border-top: 1px solid rgba(255,255,255,.08);
    background: rgba(0,0,0,.2);
}

.footer-bottom p {
    font-size: 0.82rem;
    color: rgba(255,255,255,.35);
    line-height: 1.7;
}

.footer-bottom a {
    color: rgba(9,132,227,.8);
    transition: var(--transition);
}

.footer-bottom a:hover { color: #fff; }

/* ==========================================
   浮动联系按钮
   ========================================== */
.float-contact {
    position: fixed;
    right: 24px;
    bottom: 40px;
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.float-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.float-btn:hover { transform: scale(1.12); }

.float-btn-phone { background: var(--color-accent); }
.float-btn-top   { background: var(--color-primary); font-size: 1rem; }

.float-btn-tip {
    position: absolute;
    right: calc(100% + 10px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-primary);
    color: #fff;
    font-size: 0.8rem;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.float-btn:hover .float-btn-tip { opacity: 1; }

/* ==========================================
   内页通用 Banner
   ========================================== */
.page-banner {
    position: relative;
    padding: calc(var(--nav-height) + 52px) 0 52px;
    background: linear-gradient(135deg, #071626 0%, #0d2137 100%);
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
    background-size: 48px 48px;
}

.page-banner-content { position: relative; z-index: 1; }

.page-category {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: 10px;
}

.page-title {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 10px;
    text-shadow: 0 2px 12px rgba(0,0,0,.3);
}

.page-subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,.5);
    letter-spacing: 1px;
}

/* ==========================================
   面包屑
   ========================================== */
.breadcrumb-nav {
    background: #fff;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 1px 4px rgba(0,0,0,.04);
    margin-top: var(--nav-height);
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    gap: 4px;
}

.breadcrumb a {
    color: var(--color-text-muted);
    transition: var(--transition);
}

.breadcrumb a:hover { color: var(--color-accent); }

.breadcrumb-separator {
    margin: 0 6px;
    color: var(--color-border);
    font-size: 0.75rem;
}

.breadcrumb .current { color: var(--color-text-light); }

/* ==========================================
   侧边栏布局
   ========================================== */
.main-container { padding: 56px 0; }

.layout-sidebar {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 40px;
    align-items: start;
}

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

.widget {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: 22px 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
}

.widget-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--color-border-light);
    position: relative;
}

.widget-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.widget-nav ul { display: flex; flex-direction: column; }

.widget-nav li { border-bottom: 1px solid var(--color-border-light); }
.widget-nav li:last-child { border-bottom: none; }

.widget-nav a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}

.widget-nav a::after {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.8rem;
    opacity: 0.4;
    transition: var(--transition);
}

.widget-nav a:hover,
.widget-nav a.active {
    color: var(--color-accent);
    padding-left: 5px;
}

.widget-nav a:hover::after { opacity: 1; color: var(--color-accent); }

/* 侧边栏联系 Widget */
.widget-contact p {
    margin-bottom: 10px;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 9px;
}

.widget-contact i { color: var(--color-accent); width: 18px; text-align: center; }

/* 成功案例 Widget */
.case-item { margin-bottom: 18px; }
.case-item:last-child { margin-bottom: 0; }

.case-thumb {
    width: 100%;
    height: 130px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 10px;
}

.case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.case-item:hover .case-thumb img { transform: scale(1.07); }

.case-info h4 { font-size: 0.88rem; line-height: 1.4; margin-bottom: 6px; }
.case-info h4 a { color: var(--color-text); transition: var(--transition); }
.case-info h4 a:hover { color: var(--color-accent); }

.case-tag {
    font-size: 0.75rem;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 0;
}

.case-tag i { color: var(--color-accent); }

/* Tag cloud */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }

.tag-item {
    display: inline-block;
    padding: 5px 12px;
    background: var(--color-bg);
    color: var(--color-text-muted);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.tag-item:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

/* 热门文章 Widget */
.widget-posts .post-item {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--color-border-light);
}

.widget-posts .post-item:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }

.widget-posts .post-thumb {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.widget-posts .post-thumb img { width: 100%; height: 100%; object-fit: cover; }
.widget-posts .post-info { flex: 1; }
.widget-posts .post-title { font-size: 0.85rem; line-height: 1.4; margin-bottom: 4px; }
.widget-posts .post-title a { color: var(--color-text); }
.widget-posts .post-title a:hover { color: var(--color-accent); }
.widget-posts .post-date { font-size: 0.75rem; color: var(--color-text-light); }

/* ==========================================
   通用列表样式
   ========================================== */
.list-wrapper { display: flex; flex-direction: column; gap: 16px; }

.list-item {
    display: flex;
    flex-direction: row;
    gap: 20px;
    background: var(--color-bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.list-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: rgba(214,48,49,.15);
}

.list-thumb {
    width: 180px;
    height: 110px;
    flex-shrink: 0;
    overflow: hidden;
    border-radius: var(--radius-sm);
    background: var(--color-bg);
}

.list-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.list-item:hover .list-thumb img { transform: scale(1.06); }

.list-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.list-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.4;
}

.list-title a { color: var(--color-primary); }
.list-title a:hover { color: var(--color-accent); }

.list-desc {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 10px;
    font-size: 0.88rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.list-meta {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.78rem;
    color: var(--color-text-light);
}

.meta-left { display: flex; gap: 14px; flex-wrap: wrap; }
.meta-left span { display: flex; align-items: center; gap: 5px; }
.meta-left i { color: var(--color-accent); }

.list-content-full { width: 100%; }

/* ==========================================
   分页
   ========================================== */
.pagination {
    margin-top: 52px;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 14px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-card);
    border: 1.5px solid var(--color-border);
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.pagination a:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.pagination .active {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    box-shadow: var(--shadow-accent);
}

/* ==========================================
   内容详情页
   ========================================== */
.article-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border-light);
}

.article-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 14px;
    line-height: 1.35;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    color: var(--color-text-light);
    font-size: 0.85rem;
}

.article-content {
    font-size: 1rem;
    line-height: 1.9;
    color: #374151;
    margin-bottom: 40px;
}

.article-content p { margin-bottom: 18px; }

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 20px auto;
    box-shadow: var(--shadow-md);
}

.article-content h2,
.article-content h3 {
    color: var(--color-primary);
    margin: 28px 0 14px;
    font-weight: 700;
}

.article-content h2 { font-size: 1.4rem; }
.article-content h3 { font-size: 1.2rem; }

.article-content ul,
.article-content ol {
    margin-bottom: 18px;
    padding-left: 22px;
}

.article-content li { margin-bottom: 7px; }

.article-content strong { color: var(--color-text); font-weight: 600; }

/* 上下篇导航 */
.article-nav {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 48px;
    padding-top: 28px;
    border-top: 1px solid var(--color-border-light);
}

.nav-prev, .nav-next { flex: 1; min-width: 240px; }
.nav-label { display: block; font-size: 0.8rem; color: var(--color-text-light); margin-bottom: 4px; }

.nav-link-item {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.92rem;
    display: block;
    transition: var(--transition);
}

.nav-link-item:hover { color: var(--color-accent); }

/* ==========================================
   产品详情页
   ========================================== */
.product-detail-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.product-gallery {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

.product-main-img img { width: 100%; height: auto; display: block; }

.product-info-box h1 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 12px;
    font-weight: 800;
}

.product-model-badge {
    display: inline-block;
    background: rgba(214,48,49,.06);
    color: var(--color-accent);
    padding: 5px 14px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 18px;
    border: 1px solid rgba(214,48,49,.15);
}

.product-summary {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 22px;
    font-size: 0.95rem;
}

.product-params {
    margin-bottom: 28px;
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
    padding: 18px 0;
}

.param-row { display: flex; padding: 7px 0; }
.param-label { width: 100px; color: var(--color-text-muted); font-size: 0.9rem; }
.param-value { color: var(--color-text); font-weight: 600; font-size: 0.9rem; }

.product-actions { display: flex; gap: 14px; }
.product-actions .btn { flex: 1; }

/* 产品Tabs */
.product-detail-tabs { margin-top: 40px; }

.tab-nav {
    display: flex;
    border-bottom: 2px solid var(--color-border-light);
    margin-bottom: 28px;
}

.tab-btn {
    padding: 13px 28px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.tab-btn:hover { color: var(--color-accent); }

/* 相关应用领域 */
.related-applications {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--color-border-light);
}

.related-apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
    margin-top: 18px;
}

.related-app-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
}

.related-app-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    border-color: var(--color-blue);
}

.related-app-thumb {
    display: block;
    height: 140px;
    overflow: hidden;
}

.related-app-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-app-card:hover .related-app-thumb img { transform: scale(1.08); }

.related-app-info { padding: 12px; }
.related-app-info h4 { margin: 0 0 6px; font-size: 0.92rem; font-weight: 600; line-height: 1.4; }
.related-app-info h4 a { color: var(--color-text); transition: var(--transition); }
.related-app-info h4 a:hover { color: var(--color-blue); }
.related-app-info p { margin: 0; font-size: 0.82rem; color: var(--color-text-muted); line-height: 1.5; }

/* ==========================================
   关于我们页面专属
   ========================================== */
.about-page-container { padding: 56px 0; }

.section-heading {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 36px;
    text-align: center;
    position: relative;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-blue));
    border-radius: var(--radius-full);
}

.about-intro-section {
    display: block;
    margin-bottom: 0;
}

.about-intro-content { padding-right: 10px; }

.about-intro-content .section-heading {
    text-align: left;
    margin-bottom: 24px;
}

.about-intro-content .section-heading::after { left: 0; transform: none; }

.intro-text {
    font-size: 1rem;
    line-height: 1.85;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.about-intro-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-intro-image img { width: 100%; height: auto; display: block; transition: transform .5s ease; }
.about-intro-image:hover img { transform: scale(1.04); }

.about-advantages-section { margin-bottom: 80px; }

.about-values-section { margin-bottom: 80px; }

.about-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.value-item {
    padding: 36px 24px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.value-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-blue));
    opacity: 0;
    transition: var(--transition);
}

.value-item:hover::before { opacity: 1; }
.value-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.value-item i {
    font-size: 2.6rem;
    color: var(--color-accent);
    margin-bottom: 18px;
    display: block;
    transition: transform .3s ease;
}

.value-item:hover i { transform: scale(1.1); }
.value-item h4 { font-size: 1.2rem; color: var(--color-primary); margin-bottom: 10px; font-weight: 700; }
.value-item p { color: var(--color-text-muted); font-size: 0.9rem; margin: 0; line-height: 1.7; }

.about-stats-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: 56px 40px;
    border-radius: var(--radius-xl);
    margin-bottom: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 36px;
}

.stat-card { text-align: center; padding: 16px; }

.stat-number {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--color-accent-light);
    margin-bottom: 8px;
    text-shadow: 0 2px 8px rgba(0,0,0,.2);
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    color: rgba(255,255,255,.7);
    font-weight: 500;
}

/* ==========================================
   联系我们页面专属
   ========================================== */
.contact-section {
    padding: 56px 0;
    background: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    background: var(--color-bg-card);
    padding: 36px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.contact-info h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 28px;
    padding-bottom: 14px;
    border-bottom: 3px solid var(--color-accent);
}

.info-item {
    display: flex;
    gap: 18px;
    margin-bottom: 26px;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--color-border-light);
}

.info-item:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }

.info-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #fff;
    font-size: 1.2rem;
}

.info-content { flex: 1; }
.info-content h3 { font-size: 1rem; font-weight: 600; color: var(--color-text); margin-bottom: 6px; }
.info-content p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 3px; }

.contact-form {
    background: var(--color-bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.contact-form h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 28px;
    padding-bottom: 14px;
    border-bottom: 3px solid var(--color-accent);
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 18px;
}

.contact-form .form-group { margin-bottom: 18px; }

.contact-form label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 7px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 11px 15px;
    font-size: 0.92rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-family: inherit;
    background: var(--color-bg-card);
    color: var(--color-text);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(214,48,49,.08);
}

.contact-form textarea { resize: vertical; min-height: 120px; }

/* ==========================================
   应用领域列表（案例网格）
   ========================================== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
    margin-bottom: 40px;
}

.case-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-7px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(214,48,49,.15);
}

.case-image { width: 100%; height: 210px; overflow: hidden; background: var(--color-bg); }
.case-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .case-image img { transform: scale(1.07); }

.case-content { padding: 22px; }

.case-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.case-title a { color: var(--color-primary); transition: var(--transition); }
.case-title a:hover { color: var(--color-accent); }

.case-desc {
    color: var(--color-text-muted);
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.88rem;
    transition: var(--transition);
}

.case-link:hover { gap: 11px; color: var(--color-accent-dark); }

/* ==========================================
   社交分享
   ========================================== */
.social-share {
    margin: 28px 0;
    padding: 18px 20px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--color-border-light);
}

.social-share-title { font-size: 0.92rem; color: var(--color-text); margin-bottom: 14px; font-weight: 600; }

.social-share-buttons { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}

.share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.share-wechat { background: #07c160; }
.share-weibo  { background: #e6162d; }
.share-qq     { background: #12b7f5; }
.share-link   { background: #64748b; }

/* ==========================================
   相关产品推荐
   ========================================== */
.related-products {
    margin: 40px 0;
    padding: 28px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
}

.product-detail-heading {
    font-size: 1.3rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-accent);
    text-align: center;
    color: var(--color-primary);
    font-weight: 700;
}

/* 侧边栏产品推荐 */
.sidebar-product-item {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    padding: 12px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border-light);
}

.sidebar-product-item:last-child { margin-bottom: 0; }

.sidebar-product-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
    border-color: rgba(214,48,49,.2);
}

.sidebar-product-thumb {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-bg-card);
}

.sidebar-product-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.sidebar-product-item:hover .sidebar-product-thumb img { transform: scale(1.1); }

.sidebar-product-info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.sidebar-product-info h4 { font-size: 0.88rem; line-height: 1.4; margin-bottom: 5px; font-weight: 600; }
.sidebar-product-info h4 a { color: var(--color-text); transition: var(--transition); }
.sidebar-product-info h4 a:hover { color: var(--color-accent); }

.sidebar-product-desc {
    font-size: 0.78rem;
    color: var(--color-text-light);
    margin: 0;
}

/* 各类小Widget列表 */
.notice-list, .hot-questions-list, .solutions-list, .industries-list { list-style: none; }

.notice-list li, .hot-questions-list li { margin-bottom: 10px; }

.notice-list li a,
.hot-questions-list li a {
    color: var(--color-text-muted);
    font-size: 0.86rem;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 7px;
    transition: var(--transition);
}

.notice-list li a:hover, .hot-questions-list li a:hover { color: var(--color-accent); padding-left: 3px; }

.hot-questions-list li a i { color: var(--color-accent); flex-shrink: 0; margin-top: 2px; }

.industries-list li { margin-bottom: 8px; }

.industries-list li a {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 9px 12px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.86rem;
    transition: var(--transition);
    border: 1px solid var(--color-border-light);
}

.industries-list li a i { color: var(--color-accent); font-size: 0.9rem; }

.industries-list li a:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    transform: translateX(4px);
}

.industries-list li a:hover i { color: #fff; }

.solutions-list li {
    margin-bottom: 10px;
    padding-left: 16px;
    position: relative;
    font-size: 0.86rem;
}

.solutions-list li::before { content: '→'; position: absolute; left: 0; color: var(--color-accent); }
.solutions-list li a { color: var(--color-text-muted); transition: var(--transition); }
.solutions-list li a:hover { color: var(--color-accent); padding-left: 4px; }

/* ==========================================
   FAQ 按钮
   ========================================== */
.btn-faq {
    padding: 7px 18px;
    font-size: 0.85rem;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* 侧边栏 widget 咨询按钮专属样式 */
.widget-contact .btn {
    margin-top: 14px;
    padding: 10px 16px;
    font-size: 0.88rem;
    border-radius: var(--radius-sm);
}
.widget-contact .btn-outline {
    background: transparent;
    color: var(--color-accent);
    border: 1.5px solid var(--color-accent);
}
.widget-contact .btn-outline:hover {
    background: var(--color-accent);
    color: #fff !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(214,48,49,.25);
}

/* 联系表单 wrapper */
.contact-form-wrapper { margin-top: 48px; background: var(--color-bg); }

/* ==========================================
   滚动条
   ========================================== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--color-accent), var(--color-primary-light)); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, var(--color-accent-dark), var(--color-primary)); }

::selection { background: var(--color-accent); color: #fff; }
::-moz-selection { background: var(--color-accent); color: #fff; }

/* ==========================================
   响应式 - 平板
   ========================================== */
@media screen and (max-width: 1024px) {
    .products-grid,
    .news-grid { grid-template-columns: repeat(2, 1fr); }

    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .applications-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: 1fr 1fr; gap: 40px; }
    .footer-content .footer-about { grid-column: 1 / -1; }

    .hero-title { font-size: 2.6rem; }
    .hero-stats { gap: 32px; }
}

@media screen and (max-width: 968px) {
    :root { --nav-height: 64px; }

    .section { padding: 70px 0; }
    .section-title { font-size: 1.9rem; }

    .contact-content { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }

    .layout-sidebar { grid-template-columns: 1fr; }
    .sidebar { order: 2; }

    .list-item { flex-direction: column; }
    .list-thumb { width: 100%; height: 200px; }

    .product-detail-header { grid-template-columns: 1fr; }
    .about-intro-section { grid-template-columns: 1fr; gap: 40px; }
    .about-intro-content { padding-right: 0; }

    .hero-title { font-size: 2.2rem; }
    .hero-stats { gap: 24px; }
}

/* ==========================================
   响应式 - 手机
   ========================================== */
@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        right: -100%;
        width: 82%;
        max-width: 300px;
        height: calc(100vh - var(--nav-height));
        background: rgba(13,33,55,.99);
        backdrop-filter: blur(16px);
        padding: 28px 20px;
        transition: right .3s ease;
        box-shadow: -5px 0 24px rgba(0,0,0,.25);
        overflow-y: auto;
    }

    .nav-menu.show-menu { right: 0; }

    .nav-list {
        flex-direction: column;
        gap: 4px;
    }

    .nav-link {
        font-size: 1rem;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }

    .nav-cta { margin-top: 8px; }
    .nav-toggle { display: flex; }

    .hero { min-height: calc(100vh - var(--nav-height)); padding-top: var(--nav-height); }
    .hero-title { font-size: 1.9rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .hero-description { font-size: 0.95rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-buttons .btn { width: 100%; max-width: 280px; justify-content: center; }
    .hero-stats { gap: 16px; flex-wrap: wrap; }
    .hero-stat-number { font-size: 1.8rem; }

    .section { padding: 56px 0; }
    .section-header { margin-bottom: 44px; }
    .section-title { font-size: 1.7rem; }

    .products-grid { grid-template-columns: 1fr; gap: 22px; }
    .news-grid { grid-template-columns: 1fr; }
    .applications-grid { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }

    .footer-content { grid-template-columns: 1fr; gap: 28px; }
    .footer-content .footer-about { grid-column: auto; }

    .contact-form { padding: 28px 20px; }
    .contact-form .form-row { grid-template-columns: 1fr; gap: 0; }

    .trust-bar-grid { justify-content: flex-start; gap: 14px; }
    .trust-item { font-size: 0.82rem; }

    .float-contact { right: 16px; bottom: 28px; }
    .float-btn { width: 46px; height: 46px; font-size: 1.05rem; }

    .page-title { font-size: 1.9rem; }
}

@media screen and (max-width: 480px) {
    html { font-size: 15px; }
    .container { padding: 0 16px; }

    .hero-title { font-size: 1.65rem; }
    .hero-stats { display: none; }
    .section-title { font-size: 1.5rem; }

    .product-image { height: 200px; }
    .product-content { padding: 18px; }

    .stats-grid { grid-template-columns: 1fr; }
    .about-stats-section { padding: 36px 20px; border-radius: var(--radius-lg); }

    .advantage-card { padding: 26px 20px; }
    .contact-form { padding: 22px 16px; }

    .pagination { gap: 7px; margin-top: 36px; }
    .pagination a, .pagination span { min-width: 38px; height: 38px; font-size: 0.85rem; }
}

/* ==========================================
   辅助功能 & 打印
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}

@media print {
    .header, .nav-toggle, .float-contact,
    .hero-buttons, .contact-form { display: none; }
    .section { page-break-inside: avoid; }
    body { font-size: 12pt; line-height: 1.5; }
}

/* ==========================================
   产品列表页专用网格（兼容旧类名）
   ========================================== */
.product-grid-page {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}

/* 兼容旧版 section:nth-child(even) 背景 */
.section:nth-child(even) {
    background-color: var(--color-bg);
}

/* ==========================================
   关于我们页面
   ========================================== */
.about-intro-section { padding: 60px 0; }
.about-intro-grid {
    display: grid;
    grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.2fr);
    gap: 40px;
    align-items: start;
}
.about-intro-image {
    aspect-ratio: 16 / 10;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    align-self: start;
    background: var(--color-bg-card);
    margin-top: 65px;
}
.about-intro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}
.about-intro-text {
    max-width: none;
}
.about-intro-text .section-tag { display: inline-block; margin-bottom: 12px; }
.about-intro-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 20px;
    line-height: 1.3;
}
.about-intro-text p {
    color: var(--color-text-muted);
    line-height: 2;
    margin-bottom: 16px;
    font-size: 1rem;
}
.about-intro-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

.about-stats-section {
    background: linear-gradient(135deg, #10243d 0%, #18385d 100%);
    border-radius: var(--radius-xl);
    padding: 52px 36px;
    margin: 0 0 60px;
    box-shadow: var(--shadow-lg);
}
.about-stats-section .about-stats {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 24px;
    text-align: center;
}
.about-stats-section .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 148px;
    padding: 28px 18px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 22px;
    box-shadow: none;
    backdrop-filter: blur(6px);
}
.about-stats-section .stat-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 30px rgba(0,0,0,0.18);
    border-color: rgba(255,255,255,0.22);
}
.about-stats-section .stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 8px;
    text-shadow: 0 8px 18px rgba(0,0,0,0.16);
}
.about-stats-section .stat-number sup { font-size: 1rem; vertical-align: super; }
.about-stats-section .stat-label {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.82);
    font-weight: 500;
}

.about.section .about-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
    margin-top: 40px;
}

.about.section .about-stats .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 130px;
    padding: 26px 18px;
    background: linear-gradient(180deg, #ffffff 0%, #f7f9fc 100%);
    border: 1px solid rgba(15,35,64,0.08);
    border-radius: 20px;
    box-shadow: 0 12px 26px rgba(15,35,64,0.08);
}

.about.section .about-stats .stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 10px;
    line-height: 1;
    text-shadow: none;
}

.about.section .about-stats .stat-number sup {
    font-size: 1rem;
    vertical-align: super;
}

.about.section .about-stats .stat-label {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-weight: 600;
}

@media (max-width: 1199px) {
    .about-intro-grid {
        grid-template-columns: minmax(300px, 0.92fr) minmax(0, 1.08fr);
        gap: 32px;
    }

    .about-stats-section .about-stats {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .about.section .about-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991px) {
    .about-intro-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .about-intro-image {
        aspect-ratio: 16 / 9;
        margin-top: 0;
    }

    .about-intro-text {
        max-width: none;
    }

    .about-stats-section {
        padding: 36px 22px;
    }

    .about-stats-section .about-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767px) {
    .about-intro-section {
        padding: 42px 0;
    }

    .about-intro-text h2 {
        font-size: 1.8rem;
    }

    .about-intro-text p {
        font-size: 0.95rem;
        line-height: 1.85;
    }

    .about-intro-actions {
        flex-direction: column;
    }

    .about-intro-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .about-stats-section .about-stats,
    .about.section .about-stats {
        grid-template-columns: 1fr;
    }

    .about-stats-section .stat-item,
    .about.section .about-stats .stat-item {
        min-height: 120px;
    }
}

.about-advantages-section { padding: 0 0 60px; }
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.advantage-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-blue);
}
.advantage-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--color-blue);
    opacity: 0.65;
    line-height: 1;
    margin-bottom: 8px;
    font-family: var(--font-display);
}
.advantage-title { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; }
.advantage-description { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.7; }

.about-values-section { padding: 0 0 60px; }
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.value-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.value-icon {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, var(--color-blue), var(--color-primary));
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; color: #fff;
    margin: 0 auto 18px;
}
.value-card h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; }
.value-card p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; }

/* ==========================================
   联系我们页面
   ========================================== */
.contact-section { padding: 40px 0 60px; }
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}
.contact-info-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}
.contact-info-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-blue); }
.contact-info-icon {
    width: 56px; height: 56px;
    background: linear-gradient(135deg, var(--color-blue), var(--color-primary));
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; color: #fff;
    margin: 0 auto 16px;
}
.contact-info-card h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; }
.contact-info-card p { font-size: 0.9rem; color: var(--color-text); margin-bottom: 4px; }
.contact-info-card a { color: var(--color-blue); }
.contact-info-card a:hover { text-decoration: underline; }
.contact-info-note { font-size: 0.82rem !important; color: var(--color-text-muted) !important; margin-top: 8px !important; }

.contact-form-wrap {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 48px 56px;
    max-width: 860px;
    margin: 0 auto;
}
.form { width: 100%; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; margin-bottom: 20px; }
.form-label { font-size: 0.9rem; font-weight: 600; color: var(--color-primary); margin-bottom: 8px; }
.required { color: var(--color-accent); }
.form-input {
    padding: 12px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-bg);
    transition: var(--transition);
    outline: none;
    font-family: inherit;
}
.form-input:focus { border-color: var(--color-blue); box-shadow: 0 0 0 3px rgba(9,132,227,0.12); }
.form-select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%230d2137' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 38px; }
.form-textarea { resize: vertical; min-height: 120px; }
.form-submit { text-align: center; margin-top: 8px; }
.btn-block { width: 100%; display: block; }

/* ==========================================
   新闻资讯列表
   ========================================== */
.news-list-item {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 28px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 24px;
    transition: var(--transition);
}
.news-list-item:hover { box-shadow: var(--shadow-lg); border-color: var(--color-blue); transform: translateY(-2px); }
.news-list-image { position: relative; overflow: hidden; }
.news-list-image img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s; min-height: 200px; }
.news-list-item:hover .news-list-image img { transform: scale(1.04); }
.news-tag {
    position: absolute; top: 14px; left: 14px;
    background: var(--color-accent); color: #fff;
    font-size: 0.78rem; font-weight: 600;
    padding: 4px 10px; border-radius: 20px;
}
.news-list-content { padding: 24px 24px 24px 0; display: flex; flex-direction: column; justify-content: center; }
.news-list-title { font-size: 1.12rem; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.news-list-title a { color: var(--color-primary); }
.news-list-title a:hover { color: var(--color-blue); }
.news-list-meta { display: flex; gap: 16px; font-size: 0.83rem; color: var(--color-text-muted); margin-bottom: 12px; flex-wrap: wrap; }
.news-list-meta span { display: flex; align-items: center; gap: 5px; }
.news-list-excerpt { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ==========================================
   问答列表
   ========================================== */
.list-item {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 26px 28px;
    margin-bottom: 16px;
    transition: var(--transition);
}
.list-item:hover { box-shadow: var(--shadow-lg); border-color: var(--color-blue); }
.list-item--faq { padding: 24px 28px; }
.faq-list-q { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 10px; }
.faq-q-num {
    flex-shrink: 0;
    width: 32px; height: 32px;
    background: var(--color-primary); color: #fff;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.9rem;
}
.list-header { margin-bottom: 10px; }
.list-title { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); margin-bottom: 6px; line-height: 1.5; }
.list-title a { color: inherit; }
.list-title a:hover { color: var(--color-blue); }
.list-meta { display: flex; gap: 14px; font-size: 0.83rem; color: var(--color-text-muted); flex-wrap: wrap; margin-bottom: 10px; }
.list-meta span { display: flex; align-items: center; gap: 5px; }
.list-desc { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.list-content { width: 100%; }
.list-badge { display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 2px 8px; border-radius: 20px; margin-left: 8px; vertical-align: middle; }
.list-badge--hot { background: rgba(214,48,49,0.12); color: var(--color-accent); }

.btn-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 0.88rem; font-weight: 600; color: var(--color-blue);
    transition: var(--transition);
}
.btn-link:hover { gap: 10px; color: var(--color-primary); }

/* ==========================================
   应用案例网格
   ========================================== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 40px;
}
.case-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-blue); }
.case-image { position: relative; overflow: hidden; }
.case-image img { width: 100%; height: 220px; object-fit: cover; display: block; transition: transform 0.4s; }
.case-card:hover .case-image img { transform: scale(1.04); }
.case-tag-badge {
    position: absolute; top: 14px; left: 14px;
    background: var(--color-primary); color: #fff;
    font-size: 0.78rem; font-weight: 600;
    padding: 4px 10px; border-radius: 20px;
}
.case-content { padding: 22px 24px; }
.case-title { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; line-height: 1.5; }
.case-title a { color: inherit; }
.case-title a:hover { color: var(--color-blue); }
.case-desc { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.case-meta { display: flex; gap: 14px; font-size: 0.82rem; color: var(--color-text-muted); margin-bottom: 14px; flex-wrap: wrap; }
.case-meta span { display: flex; align-items: center; gap: 5px; }

/* 侧边栏案例缩略图 */
.case-item { margin-bottom: 16px; }
.case-thumb img { width: 100%; border-radius: var(--radius-md); margin-bottom: 10px; }
.case-info h4 { font-size: 0.88rem; font-weight: 600; margin-bottom: 4px; }
.case-info h4 a { color: var(--color-primary); }
.case-info h4 a:hover { color: var(--color-blue); }
.case-tag { font-size: 0.8rem; color: var(--color-text-muted); }
.case-tag i { margin-right: 4px; }

/* ==========================================
   侧边栏通用组件
   ========================================== */
.widget-nav ul { list-style: none; padding: 0; margin: 0; }
.widget-nav ul li { border-bottom: 1px solid var(--color-border); }
.widget-nav ul li:last-child { border-bottom: none; }
.widget-nav ul li a {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 0; font-size: 0.9rem; color: var(--color-text);
    transition: var(--transition);
}
.widget-nav ul li a:hover, .widget-nav ul li.active a { color: var(--color-blue); }
.widget-nav ul li a i { font-size: 0.7rem; color: var(--color-text-muted); margin-right: 6px; }
.widget-count {
    font-size: 0.78rem; color: var(--color-text-muted);
    background: var(--color-bg); border-radius: 20px;
    padding: 1px 7px; border: 1px solid var(--color-border);
}

.hot-questions-list { list-style: none; padding: 0; margin: 0; }
.hot-questions-list li { border-bottom: 1px solid var(--color-border); }
.hot-questions-list li:last-child { border-bottom: none; }
.hot-questions-list li a {
    display: flex; align-items: flex-start; gap: 8px;
    padding: 10px 0; font-size: 0.88rem; color: var(--color-text);
    line-height: 1.5; transition: var(--transition);
}
.hot-questions-list li a:hover { color: var(--color-blue); }
.hot-questions-list li a i { flex-shrink: 0; color: var(--color-accent); margin-top: 3px; }

.widget-contact p { font-size: 0.88rem; color: var(--color-text-muted); margin-bottom: 6px; }
.widget-contact p i { margin-right: 6px; color: var(--color-blue); }

.post-item { display: flex; gap: 12px; margin-bottom: 16px; align-items: flex-start; }
.post-item:last-child { margin-bottom: 0; }
.post-thumb { flex-shrink: 0; }
.post-thumb img { width: 70px; height: 70px; border-radius: var(--radius-md); object-fit: cover; display: block; }
.post-info { flex: 1; min-width: 0; }
.post-title { font-size: 0.85rem; font-weight: 600; line-height: 1.5; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-title a { color: var(--color-primary); }
.post-title a:hover { color: var(--color-blue); }
.post-date { font-size: 0.78rem; color: var(--color-text-muted); }
.post-date i { margin-right: 4px; }

.sidebar-product-item { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; }
.sidebar-product-item:last-child { margin-bottom: 0; }
.sidebar-product-item img { width: 60px; height: 60px; border-radius: var(--radius-md); object-fit: cover; flex-shrink: 0; }
.sidebar-product-item a { font-size: 0.85rem; font-weight: 600; color: var(--color-primary); }
.sidebar-product-item a:hover { color: var(--color-blue); }
.sidebar-product-item small { font-size: 0.78rem; color: var(--color-text-muted); }

/* ==========================================
   产品列表
   ========================================== */
.list-wrapper { margin-bottom: 8px; }
.list-wrapper--news { margin-bottom: 8px; }

.list-thumb { flex-shrink: 0; width: 240px; }
.list-thumb img { width: 100%; height: 160px; object-fit: cover; border-radius: var(--radius-md); display: block; }

/* 产品列表项 */
.list-item.product-list-item { display: flex; gap: 24px; align-items: flex-start; }

/* ==========================================
   产品详情页
   ========================================== */
.product-detail { margin-bottom: 48px; }
.product-detail-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: flex-start;
    margin-bottom: 48px;
}
.product-gallery { position: relative; }
.product-main-image { border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 12px; }
.product-main-image img { width: 100%; display: block; transition: transform 0.4s; }
.product-thumbs { display: flex; gap: 10px; }
.product-thumbs .thumb {
    width: 80px; height: 80px; object-fit: cover;
    border-radius: var(--radius-md); cursor: pointer;
    border: 2px solid var(--color-border);
    transition: var(--transition); opacity: 0.7;
}
.product-thumbs .thumb:hover, .product-thumbs .thumb.active { border-color: var(--color-blue); opacity: 1; }

.product-detail-title { font-size: 1.6rem; font-weight: 700; color: var(--color-primary); margin-bottom: 16px; line-height: 1.3; }
.product-detail-meta { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 16px; font-size: 0.88rem; }
.product-detail-meta span { display: flex; align-items: center; gap: 6px; color: var(--color-text-muted); }
.product-detail-meta strong { color: var(--color-primary); }
.product-detail-stock--in { color: #00b894 !important; }
.product-detail-tags { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 20px; }
.tag {
    display: inline-flex; align-items: center; justify-content: center; font-size: 0.82rem; font-weight: 700;
    padding: 6px 14px; border-radius: 999px;
    background: rgba(9,132,227,0.12); color: var(--color-blue);
    border: 1px solid rgba(9,132,227,0.24);
    line-height: 1.2;
    text-decoration: none;
    transition: var(--transition);
}
.tag:hover { background: var(--color-blue); color: #fff; border-color: var(--color-blue); transform: translateY(-1px); }
.product-detail-tags a,
.article-tags a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(9,132,227,0.12);
    color: var(--color-blue);
    border: 1px solid rgba(9,132,227,0.24);
    line-height: 1.2;
    text-decoration: none;
    transition: var(--transition);
}

.product-detail-tags a:hover,
.article-tags a:hover {
    background: var(--color-blue);
    color: #fff;
    border-color: var(--color-blue);
    transform: translateY(-1px);
}
.product-detail-price { margin-bottom: 22px; padding: 16px; background: var(--color-bg); border-radius: var(--radius-md); }
.price-label { font-size: 0.9rem; color: var(--color-text-muted); margin-right: 8px; }
.price-value { font-size: 1.1rem; font-weight: 700; color: var(--color-accent); }
.product-detail-actions { display: flex; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.product-detail-contact p { font-size: 0.88rem; color: var(--color-text-muted); margin-bottom: 6px; }
.product-detail-contact p i { margin-right: 6px; color: var(--color-blue); }
.product-detail-contact a { color: var(--color-blue); }

.product-detail-tabs { margin-bottom: 48px; }
.tabs-nav {
    display: flex; gap: 0;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 28px; flex-wrap: wrap;
}
.tab-btn {
    padding: 12px 28px;
    font-size: 0.95rem; font-weight: 600;
    color: var(--color-text-muted);
    background: none; border: none; cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
    font-family: inherit;
}
.tab-btn:hover { color: var(--color-primary); }
.tab-btn.active { color: var(--color-blue); border-bottom-color: var(--color-blue); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel h2 { font-size: 1.2rem; font-weight: 700; color: var(--color-primary); margin-bottom: 16px; }
.tab-panel h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin: 20px 0 10px; }
.tab-panel p { color: var(--color-text-muted); line-height: 1.8; margin-bottom: 12px; font-size: 0.95rem; }
.tab-panel ul, .tab-panel ol { padding-left: 20px; margin-bottom: 14px; }
.tab-panel li { color: var(--color-text-muted); line-height: 1.8; font-size: 0.95rem; margin-bottom: 6px; }

.params-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.params-table th, .params-table td { padding: 10px 14px; border: 1px solid var(--color-border); text-align: left; }
.params-table th { background: var(--color-primary); color: #fff; font-weight: 600; }
.params-table tr:nth-child(even) td { background: var(--color-bg); }
.params-note { font-size: 0.83rem !important; color: var(--color-text-muted); margin-top: 14px !important; padding: 10px 14px; background: rgba(9,132,227,0.06); border-left: 3px solid var(--color-blue); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

.apply-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px; margin-bottom: 28px;
}
.apply-item {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 22px 18px;
    border: 1px solid var(--color-border);
}
.apply-item i { font-size: 1.4rem; color: var(--color-blue); margin-bottom: 10px; display: block; }
.apply-item h3 { font-size: 0.95rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
.apply-item p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; }
.apply-steps { background: var(--color-bg); border-radius: var(--radius-md); padding: 22px 24px; }
.apply-steps h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 14px; }
.apply-steps ol { padding-left: 20px; }
.apply-steps li { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.8; margin-bottom: 6px; }

.product-related { border-top: 1px solid var(--color-border); padding-top: 36px; }
.related-products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.product-card--small .product-image { height: 160px; }
.product-card--small .product-content { padding: 16px; }
.product-card--small .product-title { font-size: 0.92rem; }

/* ==========================================
   文章/新闻详情
   ========================================== */
.article-detail { background: var(--color-card); border-radius: var(--radius-xl); padding: 40px; border: 1px solid var(--color-border); }
.article-header { margin-bottom: 24px; }
.article-tag {
    display: inline-block; font-size: 0.78rem; font-weight: 600;
    padding: 4px 12px; border-radius: 20px;
    background: var(--color-accent); color: #fff;
    margin-bottom: 14px;
}
.article-title { font-size: 1.7rem; font-weight: 700; color: var(--color-primary); line-height: 1.35; margin-bottom: 14px; }
.article-meta { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.85rem; color: var(--color-text-muted); }
.article-meta span { display: flex; align-items: center; gap: 5px; }
.article-cover { border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 28px; }
.article-cover img { width: 100%; display: block; max-height: 460px; object-fit: cover; }
.article-body { font-size: 0.97rem; color: var(--color-text); line-height: 1.85; }
.article-lead { font-size: 1.05rem; color: var(--color-text); font-weight: 500; line-height: 1.8; padding: 18px 20px; background: var(--color-bg); border-left: 4px solid var(--color-blue); border-radius: 0 var(--radius-md) var(--radius-md) 0; margin-bottom: 24px; }
.article-body h2 { font-size: 1.25rem; font-weight: 700; color: var(--color-primary); margin: 28px 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--color-border); }
.article-body h3 { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); margin: 20px 0 10px; }
.article-body p { margin-bottom: 14px; }
.article-body ul, .article-body ol { padding-left: 20px; margin-bottom: 16px; }
.article-body li { margin-bottom: 8px; }
.article-body strong { color: var(--color-primary); font-weight: 600; }
.article-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin: 16px 0 24px; }
.article-table th, .article-table td { padding: 10px 14px; border: 1px solid var(--color-border); text-align: left; }
.article-table th { background: var(--color-primary); color: #fff; font-weight: 600; }
.article-table tr:nth-child(even) td { background: var(--color-bg); }
.article-quote {
    margin: 24px 0; padding: 20px 24px;
    background: rgba(9,132,227,0.06);
    border-left: 4px solid var(--color-blue);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.article-quote p { font-size: 1rem; font-style: italic; color: var(--color-text); margin-bottom: 8px !important; }
.article-quote cite { font-size: 0.85rem; color: var(--color-text-muted); font-style: normal; }
.article-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--color-border); }
.article-tags { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 10px 14px; background: rgba(9,132,227,0.05); border: 1px solid rgba(9,132,227,0.12); border-radius: var(--radius-md); }
.tag-label { font-size: 0.88rem; color: var(--color-primary); font-weight: 700; }
.article-tags a.tag { text-decoration: none; }
.article-share { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; color: var(--color-text-muted); }
.share-btn {
    width: 34px; height: 34px;
    background: var(--color-bg); border: 1px solid var(--color-border);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 0.95rem; color: var(--color-text);
    transition: var(--transition);
}
.share-btn:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.article-nav { display: flex; justify-content: space-between; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--color-border); gap: 16px; flex-wrap: wrap; }
.article-nav-prev, .article-nav-next { font-size: 0.9rem; color: var(--color-blue); transition: var(--transition); display: flex; align-items: center; gap: 6px; max-width: 48%; }
.article-nav-prev:hover, .article-nav-next:hover { color: var(--color-primary); }

/* 应用案例数据展示 */
.case-results { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 24px 0; }
.result-item { text-align: center; background: var(--color-bg); border-radius: var(--radius-md); padding: 20px 12px; border: 1px solid var(--color-border); }
.result-number { font-size: 2rem; font-weight: 800; color: var(--color-blue); line-height: 1.1; margin-bottom: 6px; font-family: var(--font-display); }
.result-label { font-size: 0.83rem; color: var(--color-text-muted); }

/* ==========================================
   问答详情页
   ========================================== */
.faq-detail .article-header { margin-bottom: 20px; }
.faq-detail-q { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 8px; }
.faq-q-badge, .faq-a-badge {
    flex-shrink: 0;
    width: 36px; height: 36px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1rem;
    margin-top: 4px;
}
.faq-q-badge { background: var(--color-primary); color: #fff; }
.faq-a-badge { background: var(--color-blue); color: #fff; }
.faq-answer-badge { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.faq-answer-badge h2 { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); margin: 0; }
.faq-answer-body { background: var(--color-bg); border-radius: var(--radius-lg); padding: 28px; margin-bottom: 28px; border: 1px solid var(--color-border); }

.selection-guide { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 20px 0; }
.guide-item { border-radius: var(--radius-md); padding: 22px; }
.guide-item--vhb { background: rgba(9,132,227,0.07); border: 1px solid rgba(9,132,227,0.2); }
.guide-item--regular { background: rgba(13,33,55,0.05); border: 1px solid var(--color-border); }
.guide-item h3 { font-size: 0.95rem; font-weight: 700; color: var(--color-primary); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.guide-item--vhb h3 i { color: var(--color-blue); }
.guide-item--regular h3 i { color: var(--color-text-muted); }
.guide-item ul { padding-left: 18px; margin: 0; }
.guide-item li { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 4px; }

/* ==========================================
   分页
   ========================================== */
.pagination { display: flex; gap: 10px; justify-content: center; margin-top: 40px; flex-wrap: wrap; align-items: center; }
.pagination-btn {
    min-width: 42px; height: 42px; padding: 0 14px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius-md);
    font-size: 0.9rem; font-weight: 600;
    color: var(--color-text);
    background: var(--color-card);
    border: 1.5px solid var(--color-border);
    transition: var(--transition); text-decoration: none;
}
.pagination-btn:hover { border-color: var(--color-blue); color: var(--color-blue); }
.pagination-btn.active { background: var(--color-blue); color: #fff; border-color: var(--color-blue); }
.pagination-next { padding: 0 18px; }

/* ==========================================
   响应式补充
   ========================================== */
@media screen and (max-width: 1024px) {
    .about-intro-grid { grid-template-columns: 1fr; gap: 32px; }
    .about-stats { grid-template-columns: repeat(3, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-form-wrap { padding: 36px 32px; }
    .news-list-item { grid-template-columns: 260px 1fr; }
    .product-detail-top { grid-template-columns: 1fr; gap: 28px; }
    .case-grid { grid-template-columns: 1fr; }
    .related-products-grid { grid-template-columns: repeat(2, 1fr); }
    .case-results { grid-template-columns: repeat(2, 1fr); }
    .selection-guide { grid-template-columns: 1fr; }
}
@media screen and (max-width: 768px) {
    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .contact-form-wrap { padding: 24px 20px; }
    .form-row { grid-template-columns: 1fr; }
    .news-list-item { grid-template-columns: 1fr; }
    .news-list-content { padding: 16px; }
    .apply-grid { grid-template-columns: 1fr; }
    .related-products-grid { grid-template-columns: 1fr; }
    .case-results { grid-template-columns: repeat(2, 1fr); }
    .article-title { font-size: 1.35rem; }
    .article-footer { flex-direction: column; align-items: flex-start; }
    .article-nav { flex-direction: column; }
    .article-nav-prev, .article-nav-next { max-width: 100%; }
    .tabs-nav { flex-wrap: wrap; }
    .tab-btn { padding: 10px 16px; font-size: 0.88rem; }
}

/* ==========================================
   EmpireCMS模板补充样式
   ========================================== */

/* 产品列表网格（列表模板） */
.product-list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
@media screen and (max-width: 1024px) { .product-list-grid { grid-template-columns: repeat(2, 1fr); } }
@media screen and (max-width: 640px)  { .product-list-grid { grid-template-columns: 1fr; } }

/* ==========================================
   产品分类横向导航栏
   ========================================== */
.product-cat-bar {
    background: #fff;
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
    margin-bottom: 36px;
}

.cat-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 2px;
    padding: 12px 0;
}

.cat-tab {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--color-text-muted);
    border: 1px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1.4;
}

.cat-tab i {
    font-size: 0.85rem;
    color: var(--color-accent);
    width: 14px;
    text-align: center;
    flex-shrink: 0;
}

.cat-tab:hover {
    color: var(--color-accent);
    background: rgba(214,48,49,.06);
    border-color: rgba(214,48,49,.15);
}

.cat-tab.active {
    color: var(--color-accent);
    font-weight: 600;
    background: rgba(214,48,49,.08);
    border-color: rgba(214,48,49,.25);
}

.cat-tab.active i { color: var(--color-accent); }

@media screen and (max-width: 768px) {
    .cat-tabs { padding: 8px 0; gap: 4px; }
    .cat-tab { padding: 6px 12px; font-size: 0.82rem; }
}

/* 产品信息列（详情模板） */
.product-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* FAQ列表项 */
.faq-list-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    transition: var(--transition);
}
.faq-list-item:hover { box-shadow: var(--shadow-md); border-color: var(--color-blue); }
.faq-list-question {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 10px;
}
.faq-list-question i { font-size: 1.1rem; color: var(--color-blue); flex-shrink: 0; margin-top: 3px; }
.faq-list-question h2 { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); line-height: 1.4; }
.faq-list-question h2 a { color: inherit; }
.faq-list-question h2 a:hover { color: var(--color-blue); }
.faq-list-excerpt { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.faq-list-meta { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; font-size: 0.83rem; color: var(--color-text-muted); }
.faq-list-meta span { display: flex; align-items: center; gap: 5px; }

/* FAQ详情页 */
.faq-question-block {
    background: var(--color-bg);
    border-left: 4px solid var(--color-blue);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 16px 20px;
    margin-bottom: 24px;
}
.faq-question-block h2 { font-size: 1.15rem; font-weight: 700; color: var(--color-primary); }
.faq-answer-block { background: var(--color-bg-card); }
.faq-answer-body .faq-question-block { display: none; }
.faq-cta-block {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-lg);
    padding: 32px 36px;
    margin-top: 36px;
    text-align: center;
    color: #fff;
}
.faq-cta-block p { color: rgba(255,255,255,.85); margin-bottom: 20px; }

/* 应用案例列表 */
.case-tag-badge {
    position: absolute; top: 14px; left: 14px;
    background: var(--color-blue); color: #fff;
    font-size: 0.76rem; font-weight: 600;
    padding: 3px 10px; border-radius: 20px;
    z-index: 1;
}
.case-desc { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.case-meta { display: flex; gap: 14px; font-size: 0.82rem; color: var(--color-text-muted); flex-wrap: wrap; margin-bottom: 12px; }
.case-meta span { display: flex; align-items: center; gap: 5px; }
.case-title { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; line-height: 1.4; }
.case-title a { color: inherit; }
.case-title a:hover { color: var(--color-blue); }
.case-content { padding: 20px 22px; }

/* 应用案例详情 CTA */
.case-cta-block {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-top: 36px;
    text-align: center;
}
.case-cta-block h3 { font-size: 1.2rem; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; }
.case-cta-block p { color: var(--color-text-muted); margin-bottom: 22px; }
.case-cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* 应用领域咨询区 */
.applications-cta-section { background: var(--color-bg); border-radius: var(--radius-lg); }

/* FAQ列表包裹器变体 */
.list-wrapper--faq { display: flex; flex-direction: column; gap: 14px; }

/* 侧边栏导航激活项 */
.widget-nav li.active > a { color: var(--color-accent); padding-left: 5px; }
.widget-nav li.active > a::after { opacity: 1; color: var(--color-accent); }