/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #c41e3a;
    --secondary-color: #d4a574;
    --accent-color: #8b0000;
    --text-dark: #333;
    --text-light: #666;
    --text-white: #fff;
    --bg-light: #fef5f5;
    --bg-dark: #1a1a2e;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* 深红色渐变背景 */
.gradient-bg {
    background: linear-gradient(135deg, #1a0505 0%, #2d0a0a 25%, #4a0f0f 50%, #2d0a0a 75%, #1a0505 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    position: relative;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 金色粒子容器 */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, #ffd700 0%, #d4a574 50%, transparent 100%);
    border-radius: 50%;
    animation: float 20s infinite linear;
    opacity: 0.6;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-100vh) translateX(100px) scale(1);
        opacity: 0;
    }
}

/* 卡片悬浮光泽效果 */
.shine-card {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.shine-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 215, 0, 0.1) 50%,
        transparent 70%
    );
    transform: rotate(45deg) translateX(-100%);
    transition: transform 0.6s ease;
    pointer-events: none;
}

.shine-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(196, 30, 58, 0.3), 0 0 30px rgba(212, 165, 116, 0.2);
}

.shine-card:hover::before {
    transform: rotate(45deg) translateX(100%);
}

/* 滚动渐显动画 */
.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-in-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* 延迟动画类 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(196, 30, 58, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-white);
    font-size: 1.5rem;
    font-weight: bold;
}

.logo-img {
    height: 44px;
    margin-right: 10px;
    object-fit: contain;
    filter: brightness(1.1);
}

.logo-text {
    display: none;
}

.logo-icon {
    margin-right: 10px;
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-white);
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--secondary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    margin: 3px 0;
    transition: var(--transition);
}

/* 轮播图 */
.hero-slider {
    position: relative;
    height: 50vh;
    min-height: 320px;
    overflow: hidden;
}

.slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
}

.slide-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding-bottom: 50px;
    height: 100%;
}

/* 左侧主内容 */
.slide-main {
    color: var(--text-white);
    max-width: 720px;
    padding: 20px 0;
}

.slide-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.slide-main h1 {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 14px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.35);
}

.slide-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.85);
    margin-bottom: 18px;
}

.slide-btns {
    display: flex;
    gap: 12px;
}

.btn-slide {
    padding: 10px 26px;
    background: var(--secondary-color);
    color: #fff;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s, transform 0.2s;
}
.btn-slide:hover {
    background: #a01830;
    transform: translateY(-2px);
}

.btn-slide-outline {
    padding: 10px 26px;
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.6);
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s;
}
.btn-slide-outline:hover {
    background: rgba(255,255,255,0.12);
    border-color: #fff;
}

/* 右下角数据标签 */
.slide-meta {
    display: flex;
    gap: 30px;
    flex-shrink: 0;
}

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

.meta-num {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}
.meta-unit {
    font-size: 0.85rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-left: 1px;
}
.meta-text {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.65);
    margin-top: 4px;
    letter-spacing: 0.5px;
}

.slider-dots {
    position: absolute;
    bottom: 18px;
    right: 30px;
    display: flex;
    gap: 8px;
    z-index: 10;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--secondary-color);
    width: 24px;
    border-radius: 4px;
}

.slider-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 10;
}

.arrow {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255,255,255,0.25);
    color: var(--text-white);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255,255,255,0.5);
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 15px 40px;
    background: var(--secondary-color);
    color: var(--text-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--secondary-color);
}

.btn-primary:hover {
    background: transparent;
    color: var(--secondary-color);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 35px;
    background: transparent;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-white);
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 1.7rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--secondary-color);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: 12px;
}

.section-header.light h2 {
    color: var(--text-white);
}

.section-header.light .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* 主营业务 */
/* 关于我们预览 */
.about-preview {
    padding: 36px 0;
    background: var(--text-white);
}

.about-preview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

@media (max-width: 1200px) {
    .about-preview-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 14px;
    }
}

@media (max-width: 992px) {
    .about-preview-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }
    
    .about-preview-card {
        padding: 18px 12px;
    }
    
    .about-preview-card h3 {
        font-size: 0.9rem;
    }
    
    .about-preview-card p {
        font-size: 0.78rem;
    }
}

.about-preview-card {
    background: var(--bg-light);
    padding: 20px 16px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1), box-shadow 0.4s ease, border-color 0.3s ease;
    border: 2px solid transparent;
    text-decoration: none;
    color: inherit;
    display: block;
    /* 3D磁吸准备 */
    transform-style: preserve-3d;
    will-change: transform;
    cursor: pointer;
}

.about-preview-card:hover {
    border-color: var(--secondary-color);
    box-shadow: 0 18px 48px rgba(196,30,58,0.18), 0 0 0 1px rgba(212,165,116,0.15);
}

.about-preview-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

/* 脉冲光圈动画 */
.about-preview-icon::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid var(--secondary-color);
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.3s, transform 0.3s;
}

.about-preview-card:hover .about-preview-icon::after {
    opacity: 0.6;
    transform: scale(1.1);
    animation: pulse-ring 1.2s ease infinite;
}

@keyframes pulse-ring {
    0%   { transform: scale(1); opacity: 0.6; }
    70%  { transform: scale(1.4); opacity: 0; }
    100% { transform: scale(1.4); opacity: 0; }
}

.about-preview-card:hover .about-preview-icon {
    transform: scale(1.15) rotate(-8deg);
    box-shadow: 0 8px 20px rgba(196,30,58,0.3);
}

.about-preview-icon i {
    font-size: 1.4rem;
    color: var(--text-white);
}

.about-preview-card h3 {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.about-preview-card p {
    color: var(--text-light);
    margin-bottom: 10px;
    line-height: 1.5;
    font-size: 0.82rem;
}

.service-slogan {
    color: var(--secondary-color) !important;
    font-weight: 700;
    font-size: 14px;
    text-align: center;
    padding: 8px 15px;
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.15) 0%, rgba(212, 165, 116, 0.25) 100%);
    border-radius: 20px;
    display: inline-block;
    border: 1px solid rgba(212, 165, 116, 0.4);
}

.about-preview-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.about-preview-card:hover .about-preview-link {
    color: var(--primary-color);
}

.about-preview-link i {
    margin-left: 5px;
    transition: var(--transition);
}

.about-preview-card:hover .about-preview-link i {
    transform: translateX(5px);
}

.services {
    padding: 36px 0;
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* 4列卡片布局 - 用于电商平台运营页面 */
.services-grid.four-cols {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1200px) {
    .services-grid.four-cols {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .services-grid.four-cols .service-card {
        padding: 30px 18px;
    }

    /* 保持与桌面端一致，不放大 */
    .services-grid.four-cols .service-card h3 {
        font-size: 1rem;
    }

    .services-grid.four-cols .service-card p {
        font-size: 0.82rem;
    }
}

@media (max-width: 992px) {
    .services-grid.four-cols {
        grid-template-columns: repeat(4, 1fr);
        gap: 15px;
    }

    .services-grid.four-cols .service-card {
        padding: 22px 12px;
    }

    .services-grid.four-cols .service-card h3 {
        font-size: 0.95rem;
    }

    .services-grid.four-cols .service-card p {
        font-size: 0.78rem;
    }

    .services-grid.four-cols .service-icon {
        width: 52px;
        height: 52px;
    }

    .services-grid.four-cols .service-icon i {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .services-grid.four-cols {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }

    .services-grid.four-cols .service-card {
        padding: 16px 8px;
    }

    .services-grid.four-cols .service-card h3 {
        font-size: 0.88rem;
    }

    .services-grid.four-cols .service-card p {
        font-size: 0.73rem;
    }

    .services-grid.four-cols .service-icon {
        width: 46px;
        height: 46px;
    }

    .services-grid.four-cols .service-icon i {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .services-grid.four-cols {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }

    .services-grid.four-cols .service-card {
        padding: 12px 6px;
    }

    .services-grid.four-cols .service-card h3 {
        font-size: 0.78rem;
        margin-bottom: 6px;
    }

    .services-grid.four-cols .service-card p {
        font-size: 0.65rem;
        margin-bottom: 6px;
    }

    .services-grid.four-cols .service-icon {
        width: 40px;
        height: 40px;
        margin-bottom: 8px;
    }

    .services-grid.four-cols .service-icon i {
        font-size: 1.05rem;
    }
}

/* 6列卡片布局 - 用于系统集成服务优势 */
.services-grid.six-cols {
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

@media (max-width: 1200px) {
    .services-grid.six-cols {
        grid-template-columns: repeat(6, 1fr);
        gap: 15px;
    }
    
    .services-grid.six-cols .service-card {
        padding: 30px 15px;
    }
    
    .services-grid.six-cols .service-card h3 {
        font-size: 1rem;
    }
    
    .services-grid.six-cols .service-card p {
        font-size: 0.8rem;
    }
    
    .services-grid.six-cols .service-icon {
        width: 55px;
        height: 55px;
    }
    
    .services-grid.six-cols .service-icon i {
        font-size: 1.4rem;
    }
}

@media (max-width: 992px) {
    .services-grid.six-cols {
        grid-template-columns: repeat(6, 1fr);
        gap: 10px;
    }
    
    .services-grid.six-cols .service-card {
        padding: 20px 10px;
    }
    
    .services-grid.six-cols .service-card h3 {
        font-size: 0.9rem;
    }
    
    .services-grid.six-cols .service-card p {
        font-size: 0.75rem;
    }
    
    .services-grid.six-cols .service-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 10px;
    }
    
    .services-grid.six-cols .service-icon i {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .services-grid.six-cols {
        grid-template-columns: repeat(6, 1fr);
        gap: 8px;
    }
    
    .services-grid.six-cols .service-card {
        padding: 15px 8px;
    }
    
    .services-grid.six-cols .service-card h3 {
        font-size: 0.8rem;
        margin-bottom: 8px;
    }
    
    .services-grid.six-cols .service-card p {
        font-size: 0.7rem;
        margin-bottom: 10px;
    }
    
    .services-grid.six-cols .service-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 8px;
    }
    
    .services-grid.six-cols .service-icon i {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .services-grid.six-cols {
        grid-template-columns: repeat(6, 1fr);
        gap: 6px;
    }
    
    .services-grid.six-cols .service-card {
        padding: 12px 6px;
    }
    
    .services-grid.six-cols .service-card h3 {
        font-size: 0.75rem;
        margin-bottom: 6px;
    }
    
    .services-grid.six-cols .service-card p {
        font-size: 0.65rem;
        margin-bottom: 8px;
    }
    
    .services-grid.six-cols .service-icon {
        width: 40px;
        height: 40px;
        margin-bottom: 6px;
    }
    
    .services-grid.six-cols .service-icon i {
        font-size: 1.1rem;
    }
}

/* 项目中标案例 - 按行业分类展示 */
.case-category {
    margin-bottom: 24px;
}

.case-category-title {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.case-category-title i {
    color: var(--secondary-color);
}

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

.case-compact-item {
    background: var(--text-white);
    padding: 15px 20px;
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
    display: flex;
    flex-direction: column;
    gap: 5px;
    transition: var(--transition);
}

.case-compact-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateX(5px);
}

.case-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1rem;
}

.case-client {
    color: var(--text-light);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .case-category-title {
        font-size: 1rem;
    }

    .case-compact-item {
        padding: 12px 15px;
    }

    .case-name {
        font-size: 0.88rem;
    }

    .case-client {
        font-size: 0.8rem;
    }
}

@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .service-card {
        padding: 30px 18px;
    }

    /* 与桌面端保持一致，不放大 */
    .service-card h3 {
        font-size: 1rem;
    }

    .service-card p {
        font-size: 0.82rem;
    }
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }

    .service-card {
        padding: 22px 14px;
    }

    .service-card h3 {
        font-size: 0.95rem;
    }

    .service-card p {
        font-size: 0.78rem;
    }

    .service-icon {
        width: 56px;
        height: 56px;
    }

    .service-icon i {
        font-size: 1.35rem;
    }
}

@media (max-width: 576px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .service-card {
        padding: 18px 10px;
    }
    
    .service-card h3 {
        font-size: 0.9rem;
    }
    
    .service-card p {
        font-size: 0.75rem;
        margin-bottom: 15px;
    }
    
    .service-link {
        font-size: 0.8rem;
    }
}

.service-card {
    background: var(--text-white);
    padding: 20px 18px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1), box-shadow 0.4s ease;
    text-decoration: none;
    color: inherit;
    display: block;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    will-change: transform;
}

/* 光晕追踪层 */
.service-card::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(212,165,116,0.25) 0%, transparent 70%);
    border-radius: 50%;
    top: var(--mouse-y, 50%);
    left: var(--mouse-x, 50%);
    transform: translate(-50%, -50%);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 0;
}

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

.service-card > * {
    position: relative;
    z-index: 1;
}

.service-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 50px rgba(196,30,58,0.18), 0 0 0 1px rgba(212,165,116,0.2);
}

.service-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1), box-shadow 0.3s ease;
}

.service-card:hover .service-icon {
    transform: rotateY(180deg) scale(1.1);
    box-shadow: 0 6px 18px rgba(196,30,58,0.4);
}

.service-icon i {
    font-size: 1.35rem;
    color: var(--text-white);
}

.service-card h3 {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 10px;
    line-height: 1.55;
    font-size: 0.82rem;
}

.service-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.service-card:hover .service-link {
    color: var(--primary-color);
}

.service-link i {
    margin-left: 5px;
    transition: var(--transition);
}

.service-card:hover .service-link i {
    transform: translateX(5px);
}

/* 公司优势 */
.advantages {
    padding: 36px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

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

@media (max-width: 992px) {
    .advantages-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 15px;
    }

    .advantage-item {
        padding: 13px 8px;
    }

    /* 保持与桌面端一致，不放大 */
    .advantage-number {
        font-size: 1rem;
    }

    .advantage-text {
        font-size: 0.78rem;
    }

    .advantage-icon {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .advantages-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }

    .advantage-item {
        padding: 10px 5px;
    }

    .advantage-number {
        font-size: 0.95rem;
    }

    .advantage-text {
        font-size: 0.72rem;
    }

    .advantage-icon {
        font-size: 1.35rem;
        margin-bottom: 6px;
    }
}

@media (max-width: 576px) {
    .advantages-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }

    .advantage-item {
        padding: 8px 4px;
    }

    .advantage-number {
        font-size: 0.88rem;
    }

    .advantage-text {
        font-size: 0.65rem;
    }

    .advantage-icon {
        font-size: 1.2rem;
        margin-bottom: 5px;
    }
}

.advantage-item {
    color: var(--text-white);
    padding: 14px 8px;
    border-radius: 8px;
    transition: background 0.3s ease, transform 0.3s ease;
    cursor: default;
}

.advantage-item:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-4px) scale(1.04);
}

.advantage-icon {
    font-size: 1.6rem;
    margin-bottom: 8px;
    color: var(--secondary-color);
    display: block;
    transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
}

.advantage-item:hover .advantage-icon {
    transform: scale(1.25) rotate(10deg);
}

.advantage-number {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 4px;
}

.advantage-text {
    font-size: 0.78rem;
    opacity: 0.85;
    line-height: 1.4;
}

/* 最新案例 */
.latest-cases {
    padding: 36px 0;
    background: var(--text-white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 20px;
}

@media (max-width: 992px) {
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    .case-card h3 {
        font-size: 1rem;
    }
    
    .case-card p {
        font-size: 0.85rem;
    }
    
    .case-content {
        padding: 20px;
    }
}

@media (max-width: 576px) {
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    .case-card h3 {
        font-size: 0.85rem;
    }
    
    .case-card p {
        font-size: 0.75rem;
    }
    
    .case-content {
        padding: 15px;
    }
    
    .case-tag {
        font-size: 0.7rem;
        padding: 3px 8px;
    }
}

.case-card {
    background: var(--bg-light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1), box-shadow 0.4s ease;
    text-decoration: none;
    color: inherit;
    display: block;
    position: relative;
}

/* 底部彩色光条滑入 */
.case-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--primary-color));
    background-size: 200% 100%;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1);
    animation: none;
}

.case-card:hover::after {
    transform: scaleX(1);
    animation: shimmer-bar 1.5s linear infinite;
}

@keyframes shimmer-bar {
    0%   { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.case-card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: 0 20px 44px rgba(196,30,58,0.16);
}

.case-image {
    height: 100px;
    overflow: hidden;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.5s ease;
}

.case-card:hover .case-placeholder {
    transform: scale(1.06);
}

.case-placeholder i {
    font-size: 2.8rem;
    color: rgba(255, 255, 255, 0.3);
}

.case-content {
    padding: 12px 14px;
}

.case-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--secondary-color);
    color: var(--text-white);
    border-radius: 20px;
    font-size: 0.75rem;
    margin-bottom: 8px;
}

.case-content h3 {
    font-size: 0.95rem;
    color: var(--primary-color);
    margin-bottom: 6px;
    line-height: 1.4;
}

.case-content p {
    color: var(--text-light);
    margin-bottom: 3px;
    font-size: 0.82rem;
}

.case-date {
    font-size: 0.78rem;
    color: var(--secondary-color) !important;
}

.text-center {
    text-align: center;
}

/* 合作伙伴 */
/* ===== 合作伙伴 - 双轨无缝滚动跑马灯 ===== */
.partners {
    padding: 36px 0 44px;
    background: linear-gradient(180deg, #fff 0%, var(--bg-light) 100%);
    overflow: hidden;
}

/* 跑马灯外层包裹（全宽，带两侧淡出遮罩） */
.partners-marquee-wrap {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 10px;
}

/* 两侧淡出渐变遮罩 */
.partners-marquee-wrap::before,
.partners-marquee-wrap::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 140px;
    z-index: 5;
    pointer-events: none;
}
.partners-marquee-wrap::before {
    left: 0;
    background: linear-gradient(to right, #fef5f5 0%, transparent 100%);
}
.partners-marquee-wrap::after {
    right: 0;
    background: linear-gradient(to left, #fef5f5 0%, transparent 100%);
}

/* 单轨：overflow hidden + 无缝滚动 */
.marquee-track {
    width: 100%;
    overflow: hidden;
    position: relative;
}

/* 内层：flex，宽度由内容决定 */
.marquee-inner {
    display: flex;
    align-items: center;
    gap: 16px;
    width: max-content;
    /* 默认向左 */
    animation: marquee-left 40s linear infinite;
}

/* 向右滚动轨道 */
.marquee-track[data-direction="right"] .marquee-inner {
    animation: marquee-right 40s linear infinite;
}

/* 悬停暂停 */
.marquee-track:hover .marquee-inner {
    animation-play-state: paused;
}

@keyframes marquee-left {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes marquee-right {
    0%   { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

/* 单个品牌卡片 */
.marquee-item {
    flex-shrink: 0;
    width: 130px;
    height: 84px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 14px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.07);
    border: 1px solid rgba(196,30,58,0.06);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    cursor: pointer;
    overflow: hidden;
    position: relative;
}

.marquee-item::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    border: 2px solid transparent;
    transition: border-color 0.25s ease;
}

.marquee-item:hover {
    transform: translateY(-5px) scale(1.08);
    box-shadow: 0 12px 32px rgba(196, 30, 58, 0.16);
    z-index: 10;
}

.marquee-item:hover::after {
    border-color: rgba(196, 30, 58, 0.25);
}

.marquee-item img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

@media (max-width: 768px) {
    .marquee-item {
        width: 100px;
        height: 66px;
        padding: 8px 10px;
    }
    .partners-marquee-wrap::before,
    .partners-marquee-wrap::after {
        width: 60px;
    }
}

@media (max-width: 480px) {
    .marquee-item {
        width: 84px;
        height: 56px;
        padding: 7px 8px;
    }
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 40px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.footer-section h3,
.footer-section h4 {
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--secondary-color);
}

.footer-section i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* 页面标题区域 */
.page-header {
    padding: 90px 0 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    text-align: center;
    color: var(--text-white);
}

.page-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 1.05rem;
    opacity: 0.9;
}

.page-slogan {
    color: var(--secondary-color) !important;
    font-weight: 700;
    font-size: 18px !important;
    margin-top: 20px;
    padding: 10px 25px;
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.15) 0%, rgba(212, 165, 116, 0.25) 100%);
    border-radius: 25px;
    display: inline-block;
    border: 1px solid rgba(212, 165, 116, 0.4);
}

/* 关于我们页面 */
.about-section {
    padding: 50px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text h2 {
    font-size: 1.7rem;
    color: var(--primary-color);
    margin-bottom: 14px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 14px;
    line-height: 1.7;
}

.about-image {
    position: relative;
}

.about-image-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image-placeholder i {
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.3);
}

/* 企业文化 */
.culture-section {
    padding: 50px 0;
    background: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.culture-card {
    background: var(--text-white);
    padding: 28px 22px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.culture-card i {
    font-size: 2.2rem;
    color: var(--secondary-color);
    margin-bottom: 14px;
}

.culture-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.culture-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 发展历程 */
.timeline-section {
    padding: 50px 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--secondary-color);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 30px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-content {
    background: var(--bg-light);
    padding: 16px 20px;
    border-radius: 10px;
    max-width: 350px;
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 30px;
    width: 15px;
    height: 15px;
    background: var(--secondary-color);
    border-radius: 50%;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -42px;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -42px;
}

.timeline-year {
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.timeline-content h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 案例页面 */
.cases-section {
    padding: 50px 0;
}

.cases-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--text-white);
}

.cases-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-detail-card {
    background: var(--text-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.case-detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.case-detail-header {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--text-white);
    padding: 30px;
}

.case-detail-header h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.case-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.case-meta span {
    font-size: 0.9rem;
    opacity: 0.9;
}

.case-meta i {
    margin-right: 5px;
}

.case-detail-body {
    padding: 30px;
}

.case-detail-body p {
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.8;
}

.case-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.case-tag-small {
    padding: 5px 15px;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
}

/* ===== 资质页面 - 创意卡片设计 ===== */
.qualifications-section {
    padding: 32px 0;
}

/* 通用 grid：横向填满 */
.qualifications-grid {
    display: grid;
    gap: 14px;
    width: 100%;
}

/* 行业资质：5列填满 */
.qualifications-grid.industry-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
}

/* 经营资质：4列填满 */
.qualifications-grid.business-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

/* 管理体系：7张 → flex布局，4+3，第二行3张自动居中 */
.qualifications-grid.management-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.qualifications-grid.management-grid .qualification-card {
    /* 每张占父容器的 (100%-3gap)/4 宽度，即每行4张 */
    flex: 0 0 calc(25% - 9px);
    min-width: 0;
}

/* 企业荣誉：2列填满 */
.qualifications-grid.honor-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* ---- 通用卡片 ---- */
.qualification-card {
    background: var(--text-white);
    border-radius: 14px;
    padding: 18px 14px 14px;
    text-align: center;
    box-shadow: 0 3px 14px rgba(0,0,0,0.07);
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1), box-shadow 0.4s ease, border-color 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    cursor: default;
    will-change: transform;
}

/* 卡片左上角彩色对角线装饰条 */
.qualification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 48px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 0 0 4px 0;
    transition: width 0.4s ease;
}

.qualification-card:hover::before {
    width: 100%;
}

/* 底部渐隐光晕 */
.qualification-card::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(212,165,116,0.3) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease, bottom 0.4s ease;
    pointer-events: none;
}

.qualification-card:hover::after {
    opacity: 1;
    bottom: -10px;
}

.qualification-card:hover {
    border-color: rgba(196,30,58,0.2);
    box-shadow: 0 16px 40px rgba(196,30,58,0.14), 0 0 0 1px rgba(212,165,116,0.1);
    transform: translateY(-6px) scale(1.02);
}

/* 荣誉卡片特殊样式：更大更突出 */
.honor-grid .qualification-card {
    padding: 24px 20px 18px;
    background: linear-gradient(135deg, #fff 0%, #fef9f4 100%);
    border: 2px solid rgba(212,165,116,0.15);
}

.honor-grid .qualification-card:hover {
    border-color: var(--secondary-color);
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 24px 56px rgba(196,30,58,0.18);
}

/* ---- 图标 ---- */
.qualification-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(196,30,58,0.08), rgba(212,165,116,0.12));
    border-radius: 12px;   /* 方圆形，更现代 */
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), background 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    z-index: 1;
}

.qualification-card:hover .qualification-icon {
    transform: scale(1.2) rotate(-8deg);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    box-shadow: 0 6px 18px rgba(196,30,58,0.3);
}

.qualification-icon i {
    font-size: 1.3rem;
    color: var(--secondary-color);
    transition: color 0.3s ease;
}

.qualification-card:hover .qualification-icon i {
    color: var(--text-white);
}

/* 荣誉卡片图标更大 */
.honor-grid .qualification-icon {
    width: 58px;
    height: 58px;
    border-radius: 50%;
}

.honor-grid .qualification-icon i {
    font-size: 1.6rem;
}

/* ---- 文本 ---- */
.qualification-card h3 {
    color: var(--primary-color);
    margin-bottom: 6px;
    font-size: 0.88rem;
    line-height: 1.4;
    font-weight: 600;
}

.qualification-card p {
    color: var(--text-light);
    font-size: 0.75rem;
    line-height: 1.5;
    margin-bottom: 8px;
}

.honor-grid .qualification-card h3 {
    font-size: 1.05rem;
}

.honor-grid .qualification-card p {
    font-size: 0.82rem;
}

/* ---- 标签 ---- */
.qualification-level {
    display: inline-block;
    padding: 3px 12px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    color: var(--text-white);
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    margin-top: 4px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.qualification-card:hover .qualification-level {
    transform: scale(1.08);
    box-shadow: 0 3px 10px rgba(196,30,58,0.3);
}

.honor-grid .qualification-level {
    padding: 4px 16px;
    font-size: 0.78rem;
}

/* 响应式：窄屏折叠 */
@media (max-width: 992px) {
    .qualifications-grid.industry-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    /* 平板：management-grid 3+3+1，每张占33% */
    .qualifications-grid.management-grid .qualification-card {
        flex: 0 0 calc(33.333% - 8px);
    }
}

@media (max-width: 768px) {
    .qualifications-grid.industry-grid,
    .qualifications-grid.business-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    /* 768px：management-grid 每行2张 */
    .qualifications-grid.management-grid .qualification-card {
        flex: 0 0 calc(50% - 6px);
    }
    .qualifications-grid.honor-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .qualification-card {
        padding: 14px 12px 12px;
    }
}

/* ===== 手机端（≤576px）：精简卡片 - 横向列表风格 ===== */
@media (max-width: 576px) {

    /* 所有grid改为单列 */
    .qualifications-grid.industry-grid,
    .qualifications-grid.business-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    /* management-grid 手机端单列 */
    .qualifications-grid.management-grid .qualification-card {
        flex: 0 0 100%;
    }
    .qualifications-grid.honor-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    /* 手机卡片：横向排列（图标在左，文字在右） */
    .qualification-card {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 12px 14px;
        border-radius: 10px;
        text-align: left;
    }

    /* 取消hover效果中不适合手机的位移 */
    .qualification-card:hover {
        transform: none;
    }

    /* 图标固定尺寸，不缩放 */
    .qualification-icon {
        flex-shrink: 0;
        width: 42px;
        height: 42px;
        border-radius: 10px;
        margin: 0;
    }
    .qualification-card:hover .qualification-icon {
        transform: none;
    }
    .qualification-icon i {
        font-size: 1.1rem;
    }

    /* 文字区域 */
    .qual-text-wrap {
        flex: 1;
        min-width: 0;
    }
    .qualification-card h3 {
        font-size: 0.82rem;
        margin-bottom: 2px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .qualification-card p {
        font-size: 0.72rem;
        margin-bottom: 4px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .qualification-level {
        font-size: 0.65rem;
        padding: 2px 8px;
        margin-top: 0;
    }

    /* 荣誉卡片手机端也横排 */
    .honor-grid .qualification-card {
        flex-direction: row;
        text-align: left;
        padding: 14px 16px;
    }
    .honor-grid .qualification-icon {
        width: 46px;
        height: 46px;
        border-radius: 50%;
        margin: 0;
    }
    .honor-grid .qualification-card h3 {
        font-size: 0.88rem;
    }
    .honor-grid .qualification-card p {
        font-size: 0.75rem;
    }

    /* 顶部装饰条在横排时改为左侧细线 */
    .qualification-card::before {
        width: 3px;
        height: 60%;
        top: 20%;
        left: 0;
        border-radius: 0 3px 3px 0;
        background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
        transition: height 0.3s ease;
    }
    .qualification-card:hover::before {
        width: 3px;
        height: 80%;
    }
}

/* 联系我们页面 */
.contact-section {
    padding: 50px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 15px;
}

.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: 30px;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

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

.btn-submit {
    width: 100%;
    padding: 15px;
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* 地图区域 */
.map-section {
    padding: 0 0 80px;
}

.map-placeholder {
    width: 100%;
    height: 400px;
    background: var(--bg-light);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.map-placeholder i {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.map-placeholder p {
    color: var(--text-light);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-preview-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }
    
    .about-preview-card {
        padding: 14px 8px;
    }
    
    .about-preview-icon {
        width: 40px;
        height: 40px;
    }
    
    .about-preview-icon i {
        font-size: 1.1rem;
    }
    
    .about-preview-card h3 {
        font-size: 0.78rem;
    }
    
    .about-preview-card p {
        font-size: 0.68rem;
        margin-bottom: 8px;
    }
    
    .about-preview-link {
        font-size: 0.7rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(196, 30, 58, 0.98);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .slide-main h1 {
        font-size: 1.5rem;
    }

    .slide-desc {
        font-size: 0.85rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .slide-meta {
        display: none;
    }

    .slide-btns {
        flex-wrap: wrap;
    }

    .btn-slide, .btn-slide-outline {
        padding: 8px 18px;
        font-size: 0.85rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

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

    .timeline::before {
        left: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
        justify-content: flex-start;
    }

    .timeline-content::before,
    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -42px;
        right: auto;
    }

    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    .cases-list {
        grid-template-columns: 1fr;
    }

    .advantage-number {
        font-size: 3rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }
}

/* ============================================================
   全站手机端专项优化 (≤576px)
   目标：布局紧凑、排版简洁、标题/副标题层级清晰
   ============================================================ */
@media (max-width: 576px) {

    /* ======================================================
       1. 全局容器与 Section 间距
       ====================================================== */
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    section,
    .qualifications-section,
    .services,
    .advantages,
    .about-section,
    .culture-section,
    .timeline-section,
    .cases-section {
        padding-top: 32px;
        padding-bottom: 32px;
    }

    /* Section 标题块：紧凑留白 */
    .section-header {
        margin-bottom: 18px;
    }

    /* Section 主标题：减小但保持权威感 */
    .section-header h2 {
        font-size: 1.25rem;
        letter-spacing: 0.02em;
        margin-bottom: 6px;
    }

    /* 标题下装饰线缩短 */
    .section-header h2::after {
        width: 36px;
        height: 2px;
        bottom: -6px;
    }

    /* Section 副标题：明显比标题小，减少视觉噪音 */
    .section-subtitle {
        font-size: 0.78rem;
        margin-top: 14px;
        line-height: 1.5;
        color: var(--text-light);
    }

    /* ======================================================
       2. 页面顶部 Banner
       ====================================================== */
    .page-header {
        padding: 76px 0 24px;
    }

    .page-header h1 {
        font-size: 1.45rem;
        letter-spacing: 0.02em;
        margin-bottom: 6px;
    }

    .page-header p {
        font-size: 0.8rem;
        line-height: 1.55;
        opacity: 0.85;
    }

    /* ======================================================
       3. 首页轮播
       ====================================================== */
    .hero-slider {
        height: 56vw;
        min-height: 260px;
        max-height: 380px;
    }

    /* 手机端：文字整体垂直居中偏下，水平居中 */
    .slide-inner {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding-bottom: 32px;
        padding-top: 16px;
        gap: 0;
        text-align: center;
    }

    /* 隐藏右侧数字统计，手机屏太窄放不下 */
    .slide-meta {
        display: none;
    }

    .slide-main {
        max-width: 100%;
        padding: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .slide-label {
        font-size: 0.68rem;
        letter-spacing: 0.08em;
        margin-bottom: 10px;
        opacity: 0.8;
    }

    .slide-main h1 {
        font-size: 1.4rem;
        line-height: 1.2;
        margin-bottom: 10px;
        text-align: center;
    }

    .slide-desc {
        font-size: 0.76rem;
        line-height: 1.6;
        margin-bottom: 16px;
        text-align: center;
        max-width: 280px;
        /* 隐藏 <br> 换行后的多余空白感 */
        white-space: normal;
    }

    .slide-btns {
        gap: 8px;
        justify-content: center;
    }

    .btn-slide,
    .btn-slide-outline {
        padding: 7px 16px;
        font-size: 0.78rem;
        border-radius: 4px;
    }

    /* ======================================================
       4. 首页关于预览（4格 → 2列）
       ====================================================== */
    .about-preview-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
    }

    .about-preview-card {
        padding: 12px 10px;
        border-radius: 8px;
    }

    .about-preview-icon {
        width: 34px;
        height: 34px;
        margin-bottom: 8px;
    }

    .about-preview-icon i {
        font-size: 0.95rem;
    }

    /* 卡片标题：简洁粗体 */
    .about-preview-card h3 {
        font-size: 0.8rem;
        font-weight: 600;
        margin-bottom: 3px;
        line-height: 1.3;
    }

    /* 卡片描述：控制3行，减小字号 */
    .about-preview-card p {
        font-size: 0.68rem;
        line-height: 1.5;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 5px;
    }

    .about-preview-link {
        font-size: 0.68rem;
    }

    /* ======================================================
       5. 主营业务 / 服务卡片（多列 → 单列横排）
       ====================================================== */
    .services-grid,
    .services-grid.four-cols,
    .services-grid.six-cols {
        grid-template-columns: 1fr !important;
        gap: 8px !important;
    }

    /* 横排卡片 */
    .service-card {
        display: flex;
        align-items: center;
        text-align: left;
        padding: 12px 14px;
        gap: 12px;
        border-radius: 8px;
    }

    .service-card:hover {
        transform: none;
    }

    .service-icon {
        flex-shrink: 0;
        width: 40px !important;
        height: 40px !important;
        border-radius: 10px !important;
        margin: 0 !important;
    }

    .service-card:hover .service-icon {
        transform: none;
    }

    .service-icon i {
        font-size: 1rem !important;
    }

    /* 图标后的文字区自动撑开 */
    .service-card > .service-icon ~ * {
        flex: 1;
        min-width: 0;
    }

    /* 卡片标题：明显加粗 */
    .service-card h3 {
        font-size: 0.88rem !important;
        font-weight: 600;
        margin-bottom: 2px;
        line-height: 1.3;
    }

    /* 卡片描述：控制两行 */
    .service-card p {
        font-size: 0.73rem !important;
        line-height: 1.45;
        margin-bottom: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* 隐藏服务卡片底部链接，减少视觉拥挤 */
    .service-link {
        display: none;
    }

    /* ======================================================
       6. 公司优势（多列 → 2列）
       ====================================================== */
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
    }

    .advantage-item {
        padding: 14px 8px !important;
        border-radius: 8px;
    }

    .advantage-icon {
        font-size: 1.3rem !important;
        margin-bottom: 5px;
    }

    /* 数字/名称：突出大字 */
    .advantage-number {
        font-size: 0.88rem !important;
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 2px;
    }

    /* 描述：极小，辅助信息 */
    .advantage-text {
        font-size: 0.68rem !important;
        line-height: 1.35;
    }

    /* ======================================================
       7. 资质认证卡片（qual-text-wrap 横排模式已有，补充字号）
       ====================================================== */
    .qualification-card h3 {
        font-size: 0.83rem !important;
        font-weight: 600;
        margin-bottom: 2px;
        line-height: 1.3;
    }

    .qualification-card p {
        font-size: 0.7rem !important;
        line-height: 1.4;
        margin-bottom: 3px;
    }

    .qualification-level {
        font-size: 0.62rem !important;
        padding: 1px 7px;
    }

    /* ======================================================
       8. 关于我们页
       ====================================================== */
    .about-content {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }

    .about-text h2 {
        font-size: 1.25rem;
        margin-bottom: 8px;
    }

    .about-text p {
        font-size: 0.82rem;
        line-height: 1.7;
        margin-bottom: 10px;
    }

    /* 企业文化（4列 → 2列） */
    .culture-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px;
    }

    .culture-card {
        padding: 14px 10px;
        border-radius: 8px;
    }

    .culture-card i {
        font-size: 1.5rem;
        margin-bottom: 6px;
    }

    /* 文化卡片标题 */
    .culture-card h3 {
        font-size: 0.85rem;
        font-weight: 600;
        margin-bottom: 3px;
        line-height: 1.3;
    }

    /* 文化卡片描述 */
    .culture-card p {
        font-size: 0.7rem;
        line-height: 1.45;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* ======================================================
       9. 发展历程时间轴
       ====================================================== */
    .timeline::before {
        left: 14px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 44px;
        padding-right: 0;
        justify-content: flex-start;
        margin-bottom: 16px;
    }

    .timeline-dot {
        left: 14px !important;
        right: auto !important;
        width: 10px;
        height: 10px;
    }

    .timeline-content {
        padding: 12px 14px;
        max-width: 100%;
        border-radius: 8px;
    }

    /* 年份标签 */
    .timeline-year {
        font-size: 0.72rem;
        padding: 1px 8px;
        margin-bottom: 4px;
    }

    /* 里程碑标题 */
    .timeline-content h4 {
        font-size: 0.9rem;
        font-weight: 600;
        margin-bottom: 4px;
        line-height: 1.3;
    }

    /* 里程碑描述 */
    .timeline-content p {
        font-size: 0.75rem;
        line-height: 1.55;
    }

    /* ======================================================
       10. 项目中标案例
       ====================================================== */
    .cases-list-compact {
        grid-template-columns: 1fr !important;
        gap: 6px;
    }

    .case-compact-item {
        padding: 10px 12px;
        border-radius: 6px;
    }

    /* 案例名称 */
    .case-name {
        font-size: 0.83rem;
        font-weight: 500;
        line-height: 1.35;
        margin-bottom: 2px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* 客户/来源 */
    .case-client {
        font-size: 0.7rem;
        line-height: 1.3;
    }

    /* 分类标题 */
    .case-category-title {
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 10px;
        padding-bottom: 6px;
    }

    .case-category-title i {
        font-size: 0.9rem;
    }

    .case-category {
        margin-bottom: 20px;
    }

    /* ======================================================
       11. 页脚
       ====================================================== */
    .footer {
        padding: 28px 0 14px;
    }

    .footer-grid {
        grid-template-columns: 1fr !important;
        gap: 18px;
    }

    .footer-section h3,
    .footer-section h4 {
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 10px;
    }

    .footer-section p,
    .footer-section a,
    .footer-section li {
        font-size: 0.78rem;
        line-height: 1.6;
    }

    .footer-bottom p {
        font-size: 0.72rem;
    }

    /* ======================================================
       12. 联系我们
       ====================================================== */
    .contact-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }

    /* ======================================================
       13. 导航栏
       ====================================================== */
    .nav-menu {
        padding: 12px 0;
        gap: 0;
    }

    .nav-menu li a {
        padding: 9px 0;
        font-size: 0.92rem;
        letter-spacing: 0.02em;
    }

    /* ======================================================
       14. 通用按钮
       ====================================================== */
    .btn-secondary,
    .btn-primary {
        padding: 9px 22px;
        font-size: 0.82rem;
    }
}

/* ======================================================
   超小屏修正 (≤400px)
   ====================================================== */
@media (max-width: 400px) {

    /* 预览卡降为单列，文字够宽 */
    .about-preview-grid {
        grid-template-columns: 1fr !important;
    }

    .about-preview-card {
        display: flex;
        align-items: center;
        text-align: left;
        gap: 10px;
        padding: 10px 12px;
    }

    .about-preview-icon {
        margin-bottom: 0;
        flex-shrink: 0;
    }

    /* 文化卡片也降为单列 */
    .culture-grid {
        grid-template-columns: 1fr !important;
    }

    .culture-card {
        display: flex;
        align-items: center;
        text-align: left;
        gap: 12px;
        padding: 12px 14px;
    }

    .culture-card i {
        flex-shrink: 0;
        margin-bottom: 0;
    }

    /* 优势保持2列 */
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Banner 字号再压缩 */
    .slide-main h1 {
        font-size: 1.18rem;
    }

    .section-header h2 {
        font-size: 1.15rem;
    }

    .section-subtitle {
        font-size: 0.72rem;
    }

    .page-header h1 {
        font-size: 1.25rem;
    }
}