/* --- Header 核心样式（桌面端 ≥1200px）--- */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    height: 80px;
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    overflow: visible;
}

.logo-area {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
}

.logo-area .logo-image {
    height: 40px;
    width: auto;
    margin-right: 12px;
}

.logo-area .company-name {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 1px;
    line-height: 1.3;
}

.logo-area .company-name-en {
    font-size: 12px;
    font-weight: 400;
    color: #7f8c8d;
    letter-spacing: 0.5px;
    word-break: keep-all;
}

/* 桌面端导航列表 */
.main-nav > ul {
    display: flex;
    list-style: none;
    gap: 40px;
}

.main-nav a {
    text-decoration: none;
    color: #555;
    font-size: 16px;
    font-weight: 600;
    position: relative;
    padding-bottom: 5px;
    transition: color 0.3s ease;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: #1976D2;
    clip-path: polygon(0 0, 100% 0, 50% 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* 下拉箭头样式 */
.main-nav .dropdown-arrow {
    display: inline-block;
    margin-left: 4px;
    font-size: 14px;
    line-height: 1;
    vertical-align: middle;
    transition: transform 0.3s ease;
}

/* hover时箭头旋转 */
.main-nav li:hover .dropdown-arrow,
.main-nav li.active .dropdown-arrow {
    transform: rotate(90deg);
}

.main-nav a:hover {
    color: #1976D2;
}

.main-nav a:hover::after {
    opacity: 1;
}

.main-nav a.active {
    color: #1976D2;
}

.main-nav a.active::after {
    opacity: 1;
}

.main-nav li {
    position: relative;
}

/* 桌面端下拉菜单 - 悬浮弹窗样式 */
.main-nav .dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 200px;
    max-width: 400px;
    width: max-content;
    background-color: #ffffff;
    padding: 12px 0;
    z-index: 999;
    border-radius: 8px;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

/* JS控制显示时的样式 */
.main-nav .dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

/* 桥接区域 */
.main-nav .dropdown-menu::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 0;
    right: 0;
    height: 4px;
}

.main-nav .dropdown-menu ul {
    display: flex;
    flex-direction: column;
    list-style: none;
    gap: 0;
    padding: 0;
    margin: 0;
}

/* 桌面端下拉子菜单 - 单行展示 */
.main-nav .dropdown-menu a {
    display: block;
    padding: 12px 16px;
    min-height: 40px;
    text-align: left;
    color: #333;
    font-weight: 500;
    font-size: 14px;
    line-height: 1.4;
    white-space: nowrap;
    transition: all 0.2s ease;
    position: static;
}

.main-nav .dropdown-menu a:hover {
    color: #1976D2;
    background-color: #E3F2FD;
}

.main-nav .dropdown-menu a::after {
    display: none;
}

/* 汉堡按钮 - 桌面端隐藏 */
.mobile-menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
    width: 44px;
    height: 44px;
    line-height: 44px;
    text-align: center;
}

/* --- Hero Section --- */
#hero {
    position: relative;
    overflow: hidden;
    height: 600px;
}

.hero-slider {
    display: flex;
    height: 100%;
    transition: transform 0.5s ease;
}

.hero-slide {
    min-width: 100%;
    height: 100%;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-buttons .btn {
    padding: 8px 22px;
    font-size: 14px;
    color: white;
}

.hero-buttons .btn-secondary {
    border-color: white;
    color: white;
}

.hero-buttons .btn-secondary:hover {
    background-color: white;
    color: #1976D2;
}

.hero-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 2;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.hero-dot.active {
    background: white;
    transform: scale(1.2);
}

.hero-prev,
.hero-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 2;
    border: none;
}

.hero-prev:hover,
.hero-next:hover {
    background: rgba(255, 255, 255, 0.4);
}

.hero-prev {
    left: 30px;
}

.hero-next {
    right: 30px;
}

/* --- 核心服务概览 --- */
#services {
    padding: 100px 0;
    background-color: #ffffff;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 320px;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    border-color: #1976D2;
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    border-radius: 50%;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 36px;
    line-height: 80px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(25, 118, 210, 0.3);
    padding: 0;
    box-sizing: border-box;
    flex-shrink: 0;
}

.service-card:hover .service-icon {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(25, 118, 210, 0.4);
}

.service-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 18px;
    color: #2c3e50;
}

.service-description {
    font-size: 16px;
    color: #7f8c8d;
    line-height: 1.8;
}

/* --- 行业案例 --- */
#industry-cases {
    padding: 80px 0;
}

#industry-cases .section-subtitle {
    max-width: 800px;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 40px;
}

.case-card {
    position: relative;
    display: block;
    border-radius: 12px;
    overflow: hidden;
    height: 280px;
    text-decoration: none;
    border: 1px solid #e3e8ef;
    transition: all 0.3s ease;
    background-size: cover;
    background-position: center;
}

.case-card-military { background-image: url('https://s41.ax1x.com/2026/08/12/pmqTkDg.jpg'); }
.case-card-railway  { background-image: url('https://s41.ax1x.com/2026/08/12/pmqTVEj.jpg'); }
.case-card-general  { background-image: url('https://s41.ax1x.com/2026/08/12/pmqTZUs.jpg'); }

/* 底部渐变遮罩，保证白色文字可读 */
.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.75) 100%);
    transition: background 0.35s ease;
}

.case-card:hover .case-overlay {
    background: linear-gradient(180deg, rgba(21,101,192,0.2) 0%, rgba(21,101,192,0.85) 100%);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(25, 118, 210, 0.25);
    border-color: #1976D2;
}

.case-info {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 24px 28px;
    color: #fff;
    z-index: 1;
}

.case-info .case-title {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}

.case-info .case-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.65;
    margin: 0;
}

/* --- 信任背书 --- */
#trust {
    padding: 100px 0;
    background-color: #ffffff;
}

.stats-section {
    background-color: #1976D2;
    color: white;
    padding: 40px 0;
    margin-bottom: 80px;
    border-radius: 12px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.8;
}

.partners-section {
    text-align: center;
}
.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: center;
    justify-items: center;
}

.partner-logo {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
    /* 灰色图片框线：1px 浅灰边框，统一包裹每个 logo 展示区域 */
    border: 1px solid #e0e0e0;
    /* 圆角与背景增强卡片观感 */
    border-radius: 4px;
    background: #fff;
    /* 背景透出统一底色，避免 logo 留白突兀 */
    transition: transform 0.3s ease, border-color 0.3s ease;
    text-decoration: none;
    box-sizing: border-box;
}

.partner-logo:hover {
    transform: scale(1.05);
    /* 悬停时边框加深，强化交互反馈 */
    border-color: #bdbdbd;
}

.partner-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    min-width: 300px;
    min-height: auto;
}

.partner-logo span {
    font-size: 14px;
    color: #7f8c8d;
    font-weight: 500;
}

/* --- 最新动态 --- */
.news-image .placeholder {
    opacity: 0.7;
}
.news-link::after {
    content: '→';
    margin-left: 5px;
    transition: margin-left 0.3s ease;
}

.news-link:hover::after {
    margin-left: 10px;
}

/* --- 公司介绍板块 --- */
.company-intro-section {
    padding: 30px 0;
}

.company-title {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    text-align: center;
    margin-bottom: 8px;
}
.company-desc {
    max-width: 1200px;
    margin: 0 auto 30px;
}

.company-desc p {
    font-size: 18px;
    line-height: 1.8;
    color: #333;
    text-align: justify;
    margin-bottom: 18px;
    text-indent: 2em;
}

.company-desc strong {
    color: #1976D2;
    font-weight: 600;
}

.section-subtitle {
    font-size: 22px;
    font-weight: 600;
    color: #2c3e50;
    text-align: center;
    margin-bottom: 35px;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-subtitle::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, #1976D2, transparent);
}
.history-container {
    padding-top: 20px;
    padding-bottom: 20px;
}
.capability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 25px;
}

.capability-card {
    background: #ffffff;
    border-radius: 10px;
    padding: 25px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e9ecef;
}

.capability-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(25, 118, 210, 0.1);
}

.capability-icon {
    margin-bottom: 15px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    color: #1976D2;
}

.capability-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 12px;
    text-align: center;
}

.capability-card p {
    font-size: 16px;
    line-height: 2;
    color: #555;
    text-align: justify;
    text-indent: 2em;
    letter-spacing: 0.5px;
}

.capability-summary {
    text-align: center;
    font-size: 15px;
    color: #555;
    font-style: italic;
}

.values-section {
    padding: 20px 0;
    margin-bottom: 50px;
}

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

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: #ffffff;
    border-radius: 8px;
}

.value-number {
    font-size: 32px;
    font-weight: 700;
    color: #1976D2;
    opacity: 0.3;
    line-height: 1;
}

.value-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
}

.value-content p {
    font-size: 16px;
    line-height: 1.6;
    color: #555;
}
.history-content-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    text-align: justify;
    text-indent: 2em;
}

.history-summary {
    text-align: center;
    font-size: 14px;
    color: #666;
    font-style: italic;
}
.mission-section .section-subtitle {
    color: #ffffff;
    margin-bottom: 30px;
}

.mission-section .section-subtitle::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}
.mission-quote p {
    font-size: 20px;
    line-height: 2;
    margin-bottom: 16px;
    opacity: 0.95;
    text-indent: 2em;
}
/* --- 关于我们页面 --- */
.company-intro .content p {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    text-align: left;
    margin-bottom: 20px;
    text-indent: 2em;
}

/* --- 公司文化页面 --- */
.culture-section {
    padding: 90px 20px;
}

.culture-section-1 {
    background-color: #ffffff;
}

.culture-section-2 {
    background-color: #E3F2FD;
}

.culture-section-3 {
    background: linear-gradient(160deg, #0d47a1 0%, #1565C0 100%);
    color: #fff;
}

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

.culture-header {
    display: flex;
    align-items: flex-end;
    gap: 24px;
    margin-bottom: 40px;
}

/* 章节编号 01 / 02 / 03 */
.culture-section-num {
    font-size: 72px;
    font-weight: 300;
    color: #90CAF9;
    opacity: 0.45;
    line-height: 1;
    letter-spacing: -2px;
    flex-shrink: 0;
}

/* 英文小标题 */
.culture-header-en {
    font-size: 13px;
    color: #42A5F5;
    letter-spacing: 4px;
    margin-bottom: 2px;
    line-height: 1.2;
    text-align: left;
}

.culture-title {
    font-size: 32px;
    font-weight: 700;
    color: #1565C0;
    position: static;
    display: block;
    padding-bottom: 0;
    margin: 0;
    line-height: 1.1;
    text-align: left;
}

.culture-title::after {
    display: none;
}

/* --- 1. 公司名称释义 --- */
.culture-explain-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 60px;
    margin-top: 20px;
}
.culture-explain-left {
    position: sticky;
    top: 140px;
    align-self: start;
}
.culture-explain-label {
    font-size: 13px;
    color: #546e7a;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.culture-explain-chars {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}
.culture-explain-char {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #1976D2, #42A5F5);
    color: #fff;
    font-size: 44px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(25,118,210,.3);
}
.culture-explain-char small {
    font-size: 13px;
    font-weight: 400;
    display: block;
    margin-top: 4px;
    letter-spacing: 0;
}
.culture-explain-note {
    font-size: 14px;
    color: #78909c;
    line-height: 1.8;
    margin-top: 0;
}
.culture-explain-right p {
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 20px;
    color: #37474f;
    text-indent: 0;
    text-align: left;
}
.culture-explain-right strong { color: #1565C0; }
.culture-explain-highlight {
    background: linear-gradient(120deg, #E3F2FD, #BBDEFB);
    padding: 22px 28px;
    border-radius: 12px;
    font-size: 17px;
    color: #0d47a1;
    font-weight: 500;
    margin-top: 12px;
    line-height: 1.8;
}
@media (max-width: 800px) {
    .culture-explain-grid { grid-template-columns: 1fr; gap: 32px; }
    .culture-explain-left { position: static; }
}

/* --- 深色 section 的标题适配 --- */
.culture-section-3 .culture-section-num {
    color: rgba(255,255,255,.25);
    opacity: 1;
}
.culture-header-en-dark { color: #90CAF9 !important; }
.culture-title-dark { color: #fff !important; }

/* --- 2. 公司由来（双卡片） --- */
.culture-origin {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}
.culture-origin-block {
    background: #fff;
    padding: 36px 40px;
    border-radius: 16px;
    box-shadow: 0 2px 20px rgba(21,101,192,0.06);
    position: relative;
    border-top: 4px solid #1976D2;
}
.culture-origin-block:last-child { border-top-color: #42A5F5; }
.culture-origin-block h3 {
    font-size: 20px; color: #1565C0;
    margin-bottom: 16px; padding-bottom: 12px;
    border-bottom: 1px dashed #BBDEFB;
}
.culture-origin-block p {
    font-size: 15px; line-height: 1.9; margin-bottom: 14px;
    color: #455a64;
}
.culture-origin-block strong { color: #0d47a1; }
.culture-origin-tip {
    display: inline-block; margin-top: 10px;
    background: #E3F2FD; color: #1565C0;
    padding: 8px 16px; border-radius: 20px;
    font-size: 13px; font-weight: 500;
}

/* --- 3. 企 业 文 化（深色区） --- */
.culture-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-top: 20px;
}
.culture-card-new {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 16px;
    padding: 40px 36px;
    backdrop-filter: blur(6px);
    transition: transform .3s, background .3s;
}
.culture-card-new:hover {
    transform: translateY(-4px);
    background: rgba(255,255,255,0.14);
}
.culture-card-label {
    font-size: 12px; letter-spacing: 4px; color: #90CAF9;
    margin-bottom: 16px; text-transform: uppercase;
}
.culture-card-new h3 {
    font-size: 36px; font-weight: 700;
    color: #fff; margin-bottom: 16px; margin-top: 0;
    letter-spacing: 2px;
}
.culture-card-slogan {
    font-size: 18px; color: #fff; font-weight: 600;
    margin-bottom: 14px; padding-bottom: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}
.culture-card-new p {
    font-size: 15px; color: rgba(255,255,255,0.85);
    line-height: 1.8; margin: 0;
}
.culture-values-wrap { margin-top: 56px; }
.culture-values-heading {
    font-size: 28px; font-weight: 600; color: #fff;
    margin-bottom: 32px; text-align: center;
    letter-spacing: 4px;
}
.culture-values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.culture-value-item {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 14px;
    padding: 28px 22px;
    text-align: center;
    transition: all .3s;
}
.culture-value-item:hover {
    background: rgba(255,255,255,0.18);
    transform: translateY(-4px);
}
.culture-value-num {
    font-size: 48px; font-weight: 800;
    font-family: Georgia, serif;
    background: linear-gradient(135deg, #90CAF9, #E3F2FD);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1; margin-bottom: 12px;
}
.culture-value-item h4 {
    font-size: 18px; color: #fff;
    margin: 0 0 10px; letter-spacing: 2px;
    font-weight: 700;
}
.culture-value-item p {
    font-size: 13px; color: rgba(255,255,255,0.8);
    line-height: 1.7; margin: 0;
}

/* --- 响应式 --- */
@media (max-width: 800px) {
    .culture-origin,
    .culture-top,
    .culture-values-grid {
        grid-template-columns: 1fr;
    }
    .culture-origin-block { padding: 28px 24px; }
    .culture-card-new { padding: 30px 24px; }
    .culture-card-new h3 { font-size: 28px; }
    .culture-value-num { font-size: 36px; }
}

/* --- 底部点睛 --- */
.culture-closing {
    padding: 80px 60px;
    text-align: center;
    background: #fff;
}
.culture-closing .culture-container {
    max-width: 720px;
    margin: 0 auto;
}
.culture-closing h2 {
    font-size: 36px; color: #1565C0;
    margin: 0 0 20px;
    font-weight: 700; letter-spacing: 2px;
}
.culture-closing p {
    font-size: 17px; color: #546e7a;
    line-height: 2; margin: 0;
}
.culture-closing strong { color: #1565C0; }

@media (max-width: 800px) {
    .culture-closing { padding: 50px 24px; }
    .culture-closing h2 { font-size: 26px; }
}

/* --- 解决方案页面 --- */
.solutions-layout {
    padding: 40px 0;
    min-height: calc(100vh - 80px);
}

.solutions-layout .container {
    display: flex;
    gap: 40px;
}

.solutions-sidebar {
    width: 200px;
    flex-shrink: 0;
}

.solutions-sidebar-title {
    font-size: 22px;
    font-weight: 700;
    color: #333;
    padding-bottom: 15px;
    border-bottom: 2px solid #1976D2;
    margin-bottom: 20px;
}

.solutions-nav {
    list-style: none;
}

.solutions-nav li {
    margin-bottom: 10px;
}

.solutions-nav-item {
    display: block;
    padding: 12px 16px;
    color: #666;
    text-decoration: none;
    font-size: 16px;
    background-color: #f5f5f5;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
}

.solutions-nav-item:hover {
    background-color: #e8e8e8;
}

.solutions-nav-item.active {
    color: #1976D2;
    background-color: #E3F2FD;
    border-left-color: #1976D2;
}

.solutions-content {
    flex: 1;
}

.solutions-header {
    margin-bottom: 30px;
}

.solutions-title {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.solutions-subtitle {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

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

.solution-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid #e8e8e8;
}

.solution-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: #1976D2;
}

.solution-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.solution-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #E3F2FD;
    border-radius: 8px;
}

.solution-icon svg {
    width: 32px;
    height: 32px;
}

.solution-title {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0;
}

.solution-description {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    margin: 0 0 20px 0;
    text-align: justify;
}

.solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.solution-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #1976D2;
    background-color: #E3F2FD;
    padding: 6px 14px;
    border-radius: 16px;
    transition: all 0.2s ease;
}

.solution-tag::before {
    content: '✓';
    font-size: 12px;
    font-weight: bold;
}

.solution-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

/* --- Footer --- */
.site-footer {
    background-color: #2c3e50;
    color: white;
    padding: 30px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 3.0fr 0.35fr 1.4fr;
    gap: 20px;
    margin-bottom: 20px;
}

.footer-intro p {
    color: #bdc3c7;
    font-size: 14px;
    line-height: 1.8;
}

.footer-section h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
    color: #ffffff;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #00d4ff;
}

.footer-contact p {
    color: #bdc3c7;
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.footer-contact p::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: #00d4ff;
    border-radius: 50%;
    margin-right: 12px;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #ffffff;
    font-size: 14px;
    font-weight: 700;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-bottom .footer-copy {
    color: inherit;
    font-weight: inherit;
}

.footer-bottom .footer-beian {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-bottom .beian-item {
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.3s ease;
}

.footer-bottom .beian-item:hover {
    color: #00d4ff;
}

.footer-bottom .beian-icon {
    width: 14px;
    height: 14px;
    vertical-align: middle;
}

.footer-bottom .beian-sep {
    color: #7f8c8d;
    font-weight: 400;
}

/* --- 响应式设计 --- */

/* 平板端（891px - 1199px）*/
@media (max-width: 1199px) and (min-width: 891px) {
    .site-header {
        height: 70px;
    }

    .main-nav > ul {
        gap: 25px;
    }

    .main-nav a {
        font-size: 15px;
    }

    /* 平板端下拉菜单 - 悬浮弹窗样式，适配平板宽度 */
    .main-nav .dropdown-menu {
        min-width: 180px;
        max-width: 320px;
    }

    .logo-area .company-name {
        font-size: 20px;
    }

    /* 信任背书 - 平板端四列缩小 */
    .stats-section { padding: 30px 20px; margin-bottom: 60px; }
    .stats-grid { gap: 24px; }
    .stat-number { font-size: 40px; }
    .stat-label { font-size: 15px; }

    /* 信任背书 - 平板端合作伙伴 3 列保持 */
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    .partner-logo { height: 90px; }
    .partner-logo img { min-width: 220px; }

    /* 信任背书 - 平板端区块与标题适配 */
    #trust { padding: 70px 0; }
    .partners-section .section-title { font-size: 28px; }
    .partners-section .section-subtitle { margin-bottom: 45px; }

    /* 平板端 footer 字号缩小，备案链接不换行 */
    .footer-bottom { font-size: 13px; }
    .footer-bottom .footer-beian { gap: 10px; }
}

/* 移动端（0px - 890px）*/
@media (max-width: 890px) {
    .site-header {
        padding: 0 20px;
        height: 60px;
    }

    /* 移动端导航 - 折叠为汉堡菜单 */
    .main-nav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #ffffff;
        padding: 20px 0;
        overflow-y: auto;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .main-nav.active {
        display: block;
    }

    .main-nav > ul {
        flex-direction: column;
        gap: 0;
    }

    .main-nav > ul > li {
        border-bottom: 1px solid #f0f0f0;
    }

    .main-nav > ul > li > a {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 16px 20px;
        font-size: 16px;
        min-height: 44px;
    }

    /* 移动端下拉菜单 - 内嵌展开样式（使用grid实现平滑动画）*/
    .main-nav .dropdown-menu {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        transform: none;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        min-width: 100%;
        max-width: 100%;
        background-color: #ffffff;
        border: none;
        border-radius: 0;
        box-shadow: none;
        padding: 0;
        margin: 0;
        /* 使用 grid 实现平滑展开/收起 */
        display: grid;
        grid-template-rows: 0fr;
        transition: grid-template-rows 0.3s ease;
    }

    .main-nav .dropdown-menu.show {
        grid-template-rows: 1fr;
    }

    /* 内部容器需要设置 overflow: hidden 配合 grid 动画 */
    .main-nav .dropdown-menu > ul {
        overflow: hidden;
        padding: 0;
        margin: 0;
    }

    .main-nav .dropdown-menu::before {
        display: none;
    }

    .main-nav .dropdown-menu li {
        border-bottom: none;
    }

    .main-nav .dropdown-menu a {
        display: block;
        padding: 14px 20px 14px 40px;
        min-height: 44px;
        font-size: 15px;
        color: #666;
        line-height: 1.4;
        white-space: normal;
    }

    .main-nav .dropdown-menu a:hover,
    .main-nav .dropdown-menu a:active {
        background-color: #E3F2FD;
        color: #1976D2;
    }

    /* 汉堡按钮 */
    .mobile-menu-toggle {
        display: block;
    }

    /* 移动端公司名称 - 中文名在上，英文名在下 */
    .logo-area {
        flex-direction: row;
        align-items: center;
    }

    .logo-area .logo-image {
        height: 36px;
        margin-right: 8px;
    }

    /* logo文字容器 - 垂直排列 */
    .logo-text {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }

    .logo-area .company-name {
        font-size: 16px;
        line-height: 1.2;
    }

    .logo-area .company-name-en {
        display: block;
        font-size: 10px;
        line-height: 1.2;
        letter-spacing: 0.3px;
    }

    /* Hero 区域适配 */
    #hero {
        height: 500px;
    }

    .hero-content {
        padding: 80px 20px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    .hero-prev,
    .hero-next {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .hero-prev {
        left: 15px;
    }

    .hero-next {
        right: 15px;
    }

    /* 内容区域适配 */
    .services-grid {
        gap: 20px;
    }

    .service-card {
        padding: 30px 20px;
    }

    .cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 20px;
    }

    .case-card {
        height: 220px;
    }

    .case-info {
        padding: 18px 20px;
    }

    .stat-number {
        font-size: 36px;
    }

    .stats-grid {
        gap: 30px;
    }

    /* 信任背书 - 移动端 stats-section 容器收紧 */
    .stats-section {
        padding: 32px 20px;
        margin-bottom: 60px;
        border-radius: 8px;
    }
    .stat-item {
        padding: 12px 4px;
    }

    /* 信任背书 - 移动端区块与标题适配 */
    #trust { padding: 60px 0; }
    .partners-section .section-title { font-size: 26px; }
    .partners-section .section-subtitle { margin-bottom: 40px; }

    .footer-grid {
        gap: 30px;
    }

    /* 客户区域 - 900px以下两列 */
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .partner-logo img {
        min-width: 200px;
    }

    .partner-logo {
        height: 90px;
    }
}

/* 客户区域 - 650px以下单列 */
@media (max-width: 650px) {
    .partners-grid {
        grid-template-columns: 1fr;
    }

    .partner-logo img {
        min-width: 180px;
    }

    /* 信任背书 - 650px 以下 4 列 → 2 列 */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .stats-section { padding: 28px 16px; margin-bottom: 50px; }
    .stat-number { font-size: 34px; }
    .stat-item { padding: 14px 8px; }
    .partners-section .section-title { font-size: 24px; }
    .partners-section .section-subtitle { margin-bottom: 30px; }
}

/* 信任背书 - 480px 以下小屏移动端 */
@media (max-width: 480px) {
    #trust { padding: 50px 0; }
    .partners-section .section-title { font-size: 22px; }
    .partners-section .section-subtitle { margin-bottom: 24px; }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .stat-number { font-size: 30px; margin-bottom: 4px; }
    .stat-label { font-size: 14px; }
    .stat-item { padding: 12px 4px; }
    .stats-section { padding: 24px 12px; margin-bottom: 40px; }

    /* 合作伙伴 Logo - 480px 以下单列堆叠 */
    .partner-logo { height: 80px; }
    .partner-logo img { min-width: 140px; max-height: 70px; }
}

/* 页脚移动端布局（≤800px）*/
@media (max-width: 800px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        text-align: left;
        gap: 20px;
    }

    /* 文字描述 - 跨两列，两端对齐 */
    .footer-intro {
        grid-column: 1 / -1;
        order: 1;
    }

    .footer-intro p {
        text-align: justify;
        font-size: 13px;
        line-height: 1.8;
        margin-bottom: 12px;
    }

    /* 关于我们 + 联系方式 并排 */
    .footer-section:not(.footer-intro) {
        order: 2;
    }

    .footer-contact {
        order: 3;
    }

    .footer-section h3 {
        font-size: 15px;
        margin-bottom: 12px;
    }

    .footer-section ul li,
    .footer-contact p {
        margin-bottom: 8px;
    }

    .footer-section ul li a,
    .footer-contact p {
        font-size: 12px;
    }

    /* 版权信息 - 移动端上下堆叠 */
    .footer-bottom {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        gap: 8px;
        font-size: 12px;
    }

    .footer-bottom .footer-beian {
        justify-content: center;
        flex-wrap: wrap;
    }
}
@media (max-width: 480px) {
    .section-title {
        font-size: 26px;
    }

    .hero-title {
        font-size: 28px;
    }

    .stat-number {
        font-size: 28px;
    }

    /* 移动端页脚 - 文字描述在上，关于我们+联系方式并排，版权信息在下 */
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        text-align: left;
        gap: 24px;
    }

    .footer-intro {
        grid-column: 1 / -1;
        order: 1;
    }

    .footer-intro p {
        text-align: justify;
        font-size: 13px;
        line-height: 1.8;
    }

    .footer-section:not(.footer-intro) {
        order: 2;
    }

    .footer-contact {
        order: 3;
    }

    .footer-section h3 {
        font-size: 16px;
        margin-bottom: 16px;
    }

    .footer-section ul li a,
    .footer-contact p {
        font-size: 13px;
    }

    /* 版权信息 - 小屏进一步压缩间距 */
    .footer-bottom {
        gap: 6px;
    }

    .footer-bottom .footer-beian {
        gap: 8px;
    }

    .footer-bottom .beian-icon {
        width: 14px;
        height: 14px;
    }

    .solutions-layout {
        flex-direction: column;
    }

    .solutions-sidebar {
        width: 100%;
        margin-right: 0;
        margin-bottom: 20px;
    }

    .solutions-content {
        width: 100%;
    }

    .solutions-grid {
        flex-direction: column;
    }

    .solution-card {
        padding: 24px;
    }

    .solution-card-header {
        flex-wrap: wrap;
    }

    .solution-tags {
        gap: 8px;
    }

    .timeline-content {
        width: 100%;
        padding-left: 40px !important;
        padding-right: 20px !important;
    }

    .timeline-content:nth-child(odd) {
        text-align: left;
    }

    .timeline-content:nth-child(even) {
        text-align: left;
        margin-left: 0;
    }

    .culture-grid {
        grid-template-columns: 1fr;
    }

    .culture-values-list li {
        font-size: 15px;
        line-height: 1.8;
    }

    .capability-card {
        padding: 20px 15px;
    }
.service-detail-card h3 {
        font-size: 18px;
    }
.resource-card h3 {
        font-size: 18px;
    }

    .values-grid {
        gap: 20px;
    }

    .value-item {
        padding: 20px;
    }
}

/* 解决方案页面布局（≤800px）*/
@media (max-width: 800px) {
    /* 容器改为垂直排列 */
    .solutions-layout .container {
        flex-direction: column;
        gap: 20px;
    }

    .solutions-sidebar {
        width: 100%;
        background: #fff;
        border-radius: 8px;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        overflow: hidden;
        margin-bottom: 0;
    }

    .solutions-content {
        width: 100%;
    }

    .solutions-sidebar-title {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 16px 20px;
        margin-bottom: 0;
        border-bottom: none;
        cursor: pointer;
        user-select: none;
        font-size: 18px;
    }

    .solutions-sidebar-title::after {
        content: '›';
        font-size: 20px;
        color: #1976D2;
        transition: transform 0.3s ease;
    }

    .solutions-sidebar.open .solutions-sidebar-title::after {
        transform: rotate(90deg);
    }

    .solutions-nav {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .solutions-sidebar.open .solutions-nav {
        max-height: 300px;
    }

    .solutions-nav-item {
        border-left: none;
        border-bottom: 1px solid #f0f0f0;
        border-radius: 0;
    }

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

/* ========== 关于我们页面样式 ========== */
.company-intro .content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.company-intro p {
    font-size: 16px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 24px;
}
.mission-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
}

.mission-card p {
    font-size: 14px;
    color: #7f8c8d;
    line-height: 1.6;
}

.timeline {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #e9ecef;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding: 10px 0;
}

.timeline-item:nth-child(odd) .timeline-content {
    text-align: right;
    padding-right: 100px;
}

.timeline-item:nth-child(even) .timeline-content {
    text-align: left;
    padding-left: 100px;
}

.timeline-item::after {

    left: 50%;
    top: 50%;
    width: 16px;
    height: 16px;
    background-color: #1976D2;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    border: 4px solid white;
    box-shadow: 0 0 0 4px rgba(25, 118, 210, 0.2);
}

.timeline-content {
    position: relative;
    width: 46%;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-year {
    font-size: 24px;
    font-weight: 700;
    color: #1976D2;
    margin-bottom: 16px;
    padding-left: 20px;
    position: relative;
}

.timeline-year::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background-color: #1976D2;
}

.timeline-item:nth-child(odd) .timeline-year {
    padding-left: 0;
    padding-right: 20px;
}

.timeline-item:nth-child(odd) .timeline-year::before {
    left: auto;
    right: 0;
}

.timeline-desc {
    font-size: 16px;
    color: #333;
    line-height: 1.8;
    text-align: justify;
    text-indent: 2em;
}
.team-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #2c3e50;
}

.team-card .position {
    font-size: 14px;
    color: #1976D2;
    margin-bottom: 12px;
}

.team-card p {
    font-size: 14px;
    color: #7f8c8d;
    line-height: 1.6;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.certification-item {
    padding: 30px;
    background-color: #ffffff;
    border-radius: 12px;
}

.certification-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.certification-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
}

/* ========== 服务支持页面样式 ========== */
.service-detail-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2c3e50;
}

.service-detail-card ul {
    list-style: none;
}

.service-detail-card li {
    padding: 10px 0;
    font-size: 14px;
    color: #555;
    border-bottom: 1px dashed #e9ecef;
}

.service-detail-card li:last-child {
    border-bottom: none;
}
.resource-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
}

.resource-card p {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 16px;
    line-height: 1.6;
}

.resource-card .download-btn {
    display: inline-flex;
    align-items: center;
    color: #1976D2;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
}

.resource-card .download-btn::after {
    content: '↓';
    margin-left: 5px;
}

.faq-item {
    border-bottom: 1px solid #e9ecef;
    padding: 24px 0;
}

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

.faq-question {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: #1976D2;
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: #1976D2;
    transition: transform 0.3s ease;
}

.faq-question.active::after {
    transform: rotate(45deg);
}

.faq-answer {
    font-size: 14px;
    color: #7f8c8d;
    line-height: 1.8;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer.active {
    max-height: 200px;
    margin-top: 16px;
}

/* ========== 联系我们页面样式 ========== */
.contact-grid-2x2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(25, 118, 210, 0.12);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background-color: #1976D2;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    margin-right: 20px;
    flex-shrink: 0;
}

.contact-item-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #2c3e50;
}

.contact-item-content p {
    font-size: 14px;
    color: #7f8c8d;
    line-height: 1.6;
}
.contact-form h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 30px;
    color: #2c3e50;
}
.form-group label {
    width: 100px;
    font-size: 14px;
    font-weight: 500;
    color: #555;
    flex-shrink: 0;
}

.form-group input,
.form-group select,
.form-group textarea {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background-color: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1976D2;
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
    align-self: flex-start;
    margin-top: 0;
}

.map-container {
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 2px solid #1976D2;
    cursor: pointer;
    transition: all 0.3s ease;
}

.map-container:hover {
    box-shadow: 0 6px 24px rgba(25, 118, 210, 0.2);
}

.map-container:active {
    transform: scale(0.995);
}

.map-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.map-address {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.map-address p {
    font-size: 15px;
    color: #333;
    margin: 0;
    white-space: nowrap;
}

.map-tooltip {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(25, 118, 210, 0.9);
    color: #fff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.map-container:hover .map-tooltip {
    opacity: 1;
}

.copy-toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: rgba(40, 167, 69, 0.95);
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 9999;
    pointer-events: none;
}

.copy-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.operation-service-modes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.service-mode-item {
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    border: 1px solid #f0f0f0;
}

.service-mode-item-header {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
}

.mode-number {
    font-size: 42px;
    font-weight: 300;
    color: rgba(25, 118, 210, 0.4);
    line-height: 1;
    letter-spacing: -2px;
}

.service-mode-item h3 {
    font-size: 17px;
    font-weight: 700;
    color: #333;
    margin: 0;
}

.mode-subtitle {
    font-size: 12px;
    color: #1976D2;
    font-weight: 400;
    margin-bottom: 16px;
}

.mode-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 16px;
}

.mode-contact-btn {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    color: #ffffff;
    font-size: 13px;
    font-weight: 500;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.mode-contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
}

.operation-service-scope {
    margin-top: 40px;
}

.scope-section {
    margin-bottom: 50px;
}

.scope-section:last-child {
    margin-bottom: 0;
}

.scope-section h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #1976D2;
    display: inline-block;
}

.scope-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.scope-card {
    background: #ffffff;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #eee;
    transition: all 0.3s ease;
}

.scope-card:hover {
    border-color: #1976D2;
    box-shadow: 0 5px 20px rgba(25, 118, 210, 0.1);
}

.scope-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
}

.scope-card p {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    text-align: justify;
}

.operation-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.benefit-card {
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    padding: 35px;
    border-radius: 12px;
    color: #ffffff;
    text-align: center;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(25, 118, 210, 0.3);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    color: rgba(255, 255, 255);
    margin-bottom: 20px;
}

.benefit-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
}

.benefit-card p {
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.9;
}

.it-environment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.it-environment-card {
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    transition: all 0.3s ease;
    text-align: center;
}

.it-environment-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
.it-environment-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.it-subtitle {
    font-size: 16px;
    color: #1976D2;
    font-weight: 500;
    margin-bottom: 15px;
}

.it-environment-card p:last-child {
    font-size: 16px;
    color: #555;
    line-height: 1.7;
    text-align: justify;
    text-indent: 2em;
}

.operation-service-list {
    margin-top: 10px;
    overflow-x: auto;
}

.service-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.service-table thead {
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    color: #ffffff;
}

.service-table th {
    padding: 18px 24px;
    text-align: center;
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
}

.service-table tbody tr {
    border-bottom: 1px solid #eee;
    transition: background-color 0.2s ease;
}

.service-table tbody tr:hover {
    background-color: #ffffff;
}

.service-table tbody tr:last-child {
    border-bottom: none;
}

.service-table tbody td {
    padding: 20px 24px;
    vertical-align: middle;
}

.service-table tbody td:first-child {
    font-weight: 600;
    color: #1976D2;
    font-size: 16px;
    text-align: center;
    width: 80px;
}

.service-table tbody td:nth-child(2) {
    font-weight: 600;
    color: #333;
    font-size: 15px;
    min-width: 240px;
    max-width: 280px;
    text-align: center;
    white-space: normal;
}

.service-table tbody td:nth-child(3) {
    color: #555;
    font-size: 14px;
    width: auto;
}

.service-table tbody ol {
    list-style: decimal;
    padding-left: 20px;
    margin: 0;
}

.service-table tbody ol li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.service-table tbody ol li:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .it-environment-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .it-environment-card {
        padding: 20px;
    }

    .service-table th,
    .service-table td {
        padding: 12px 15px;
        font-size: 13px;
    }

    .service-table tbody td:nth-child(2) {
        width: auto;
        white-space: normal;
    }
    .operation-service-modes {
        grid-template-columns: 1fr;
        gap: 20px;
    }
.mode-number {
        font-size: 36px;
    }

    .scope-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .scope-card {
        padding: 20px;
    }

    .operation-benefits {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .benefit-card {
        padding: 25px;
    }

    /* 移动端联系方式 2x2 改为 1 列 */
    .contact-grid-2x2 {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-item {
        padding: 24px 20px;
    }
}

/* ========== 服务支持横向卡片布局 ========== */
.service-overview {
    padding: 60px 0;
}

.service-card-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.service-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px 28px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
    border-color: #1976D2;
}

.service-card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.service-card-icon svg {
    width: 40px;
    height: 40px;
    color: #fff;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.service-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 0;
}

.service-card-link {
    display: inline-flex;
    align-items: center;
    margin-top: 16px;
    color: #1976D2;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
}

.service-card-link:hover {
    color: #1565C0;
}

.service-card-link::after {
    content: '→';
    margin-left: 6px;
    transition: transform 0.3s ease;
}

.service-card:hover .service-card-link::after {
    transform: translateX(4px);
}

/* 服务详情区域 */
.service-detail-section:nth-child(even) {
    background: #f8f9fc;
}
.service-detail-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.service-detail-header p {
    font-size: 16px;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

/* 响应式 */
@media (max-width: 992px) {
    .service-card-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .service-card-row {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .service-detail-header h2 {
        font-size: 26px;
    }
}

/* ========== 服务详情特性区域 ========== */
.features-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #1976D2, #42A5F5);
    border-radius: 2px;
}
.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #E3F2FD 0%, #E3F2FD 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: #1976D2;
}

.feature-content h4 {
    font-size: 17px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.feature-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    margin: 0;
}

/* ========== 研发服务页面样式 ========== */

/* Hero区域 */
/* 服务简介卡片 */
.rnd-intro {
    padding: 60px 0;
}

.rnd-intro-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.rnd-intro-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    text-align: center;
}

.rnd-intro-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
    border-color: #1976D2;
}

.rnd-intro-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #E3F2FD 0%, #E3F2FD 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.rnd-intro-icon svg {
    width: 36px;
    height: 36px;
    color: #1976D2;
}

.rnd-intro-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.rnd-intro-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* 核心技术能力 */
.rnd-tech {
    padding: 60px 0;
    background: #fff;
}

.rnd-tech-list {
    list-style: none;
    padding: 0;
    max-width: 900px;
    margin: 40px auto 0;
}

.rnd-tech-item {
    padding: 16px 0;
    border-bottom: 1px dashed #e0e0e0;
}

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

.rnd-tech-title {
    font-size: 17px;
    font-weight: 700;
    color: #1976D2;
    margin-bottom: 8px;
    padding-left: 16px;
    position: relative;
}

.rnd-tech-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background-color: #1976D2;
    border-radius: 2px;
}

.rnd-tech-desc {
    font-size: 15px;
    line-height: 1.8;
    color: #555;
    padding-left: 16px;
}

/* 定制业务范围 */
.rnd-business {
    padding: 60px 0;
}

.rnd-business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.rnd-business-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.rnd-business-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
}

.rnd-business-header {
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    padding: 24px 28px;
    color: #fff;
    display: flex;
    align-items: center;
}

.rnd-business-icon {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
}

.rnd-business-icon svg {
    width: 24px;
    height: 24px;
}

.rnd-business-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.rnd-business-body {
    padding: 24px 28px;
}

.rnd-business-body ul {
    list-style: none;
}

.rnd-business-body li {
    padding: 10px 0;
    border-bottom: 1px dashed #e9ecef;
    font-size: 14px;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.rnd-business-body li:last-child {
    border-bottom: none;
}

.rnd-business-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: #1976D2;
    border-radius: 50%;
}

/* 服务优势 */
.rnd-advantages {
    padding: 60px 0;
    background: #f8f9fc;
}

.rnd-advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.rnd-advantage-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 28px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.rnd-advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
}

.rnd-advantage-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.rnd-advantage-icon svg {
    width: 32px;
    height: 32px;
    color: #fff;
}

.rnd-advantage-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.rnd-advantage-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

/* 适用场景 */
.rnd-scenarios {
    padding: 60px 0;
}

.rnd-scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.rnd-scenario-card {
    background: #fff;
    border-radius: 12px;
    padding: 28px 24px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.rnd-scenario-card:hover {
    border-color: #1976D2;
    transform: translateY(-4px);
}

.rnd-scenario-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.rnd-scenario-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.rnd-scenario-card p {
    font-size: 13px;
    color: #888;
    line-height: 1.6;
}

/* 研发服务页面响应式 */
@media (max-width: 992px) {
    .rnd-intro-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .rnd-intro-grid {
        grid-template-columns: 1fr;
    }

    .rnd-intro,
    .rnd-tech,
    .rnd-business,
    .rnd-advantages,
    .rnd-scenarios {
        padding: 40px 0;
    }
}

/* ============ 交付支持页样式 ============ */

/* 交付核心目标 */
.delivery-goals {
    padding: 60px 0;
    background: #fff;
}

.delivery-goals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.delivery-goal-card {
    background: #fff;
    border-radius: 16px;
    padding: 36px 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    text-align: center;
}

.delivery-goal-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
    border-color: #1976D2;
}

.delivery-goal-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #E3F2FD 0%, #E3F2FD 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.delivery-goal-icon svg {
    width: 36px;
    height: 36px;
    color: #1976D2;
}

.delivery-goal-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.delivery-goal-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* 八大交付内容补充说明 */
.delivery-goals-extra {
    margin-top: 40px;
    padding: 24px 30px;
    background: linear-gradient(135deg, #E3F2FD 0%, #E3F2FD 100%);
    border-radius: 12px;
    border-left: 4px solid #1976D2;
}

/* 八大交付内容横排标签 */
.delivery-goals-tags li {
    padding: 8px 18px;
    background: #fff;
    color: #1976D2;
    font-size: 14px;
    font-weight: 600;
    border-radius: 20px;
    border: 1px solid #1976D2;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.delivery-goals-tags li:hover {
    background: #1976D2;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(25, 118, 210, 0.25);
}

/* 整体交付流程 */
.delivery-process {
    padding: 60px 0;
    background: #ffffff;
}

.delivery-process-intro {
    font-size: 15px;
    color: #555;
    line-height: 1.9;
    max-width: 900px;
    margin: 20px auto 40px;
    text-align: center;
}

.delivery-process-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

/* 时间轴左侧竖线 */
.delivery-process-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 30px;
    bottom: 30px;
    width: 2px;
    background: linear-gradient(180deg, #1976D2, #42A5F5);
}

.delivery-process-step {
    position: relative;
    padding: 18px 0 18px 30px;
    margin-bottom: 8px;
}

/* 步骤圆点 */
.delivery-process-step::before {
    content: '';
    position: absolute;
    left: -27px;
    top: 24px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid #1976D2;
    box-shadow: 0 0 0 4px rgba(25, 118, 210, 0.1);
}

.step-number {
    position: absolute;
    left: -30px;
    top: -4px;
    font-size: 13px;
    font-weight: 700;
    color: #1976D2;
    background: #E3F2FD;
    width: 24px;
    height: 24px;
    line-height: 24px;
    border-radius: 50%;
    text-align: center;
    opacity: 0;
}

.step-content {
    background: #fff;
    padding: 18px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-left: 3px solid #1976D2;
}

.step-content:hover {
    transform: translateX(6px);
    box-shadow: 0 8px 24px rgba(25, 118, 210, 0.12);
}

.step-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 6px;
}

.step-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

/* 标准化交付物清单 */
.delivery-deliverables {
    padding: 60px 0;
    background: #fff;
}

.delivery-deliverables-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.delivery-deliverable-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.delivery-deliverable-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
}

.delivery-deliverable-header {
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    padding: 20px 26px;
    color: #fff;
    display: flex;
    align-items: center;
}

.delivery-deliverable-icon {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
}

.delivery-deliverable-icon svg {
    width: 24px;
    height: 24px;
}

.delivery-deliverable-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.delivery-deliverable-body {
    padding: 22px 26px;
}

.delivery-deliverable-body ul {
    list-style: none;
}

.delivery-deliverable-body li {
    padding: 10px 0;
    border-bottom: 1px dashed #e9ecef;
    font-size: 14px;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.delivery-deliverable-body li:last-child {
    border-bottom: none;
}

.delivery-deliverable-body li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #1976D2;
    font-weight: 700;
}

/* 交付质量保障机制 */
.delivery-quality {
    padding: 60px 0;
    background: #ffffff;
}

.delivery-quality-list {
    max-width: 1000px;
    margin: 40px auto 0;
}

.delivery-quality-item {
    background: #fff;
    border-radius: 12px;
    padding: 24px 28px;
    margin-bottom: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-left: 4px solid #1976D2;
}

.delivery-quality-item:hover {
    transform: translateX(6px);
    box-shadow: 0 8px 24px rgba(25, 118, 210, 0.1);
}

.quality-item-title {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.quality-number {
    font-size: 20px;
    font-weight: 700;
    color: #1976D2;
    margin-right: 16px;
    background: #E3F2FD;
    width: 40px;
    height: 40px;
    line-height: 40px;
    border-radius: 50%;
    text-align: center;
}

.quality-item-title h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0;
}

.quality-item-desc {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    padding-left: 56px;
}

/* 交付验收标准 */
.delivery-acceptance {
    padding: 60px 0;
    background: #fff;
}

.delivery-acceptance-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.delivery-acceptance-card {
    background: linear-gradient(135deg, #E3F2FD 0%, #ffffff 100%);
    border-radius: 16px;
    padding: 36px 24px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #E3F2FD;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.delivery-acceptance-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(25, 118, 210, 0.12);
    border-color: #1976D2;
}

.acceptance-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    box-shadow: 0 6px 18px rgba(25, 118, 210, 0.25);
}

.acceptance-icon svg {
    width: 30px;
    height: 30px;
    color: #fff;
}

.delivery-acceptance-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.delivery-acceptance-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* ============ 交付支持页响应式适配 ============ */
@media (max-width: 768px) {
    .delivery-goals,
    .delivery-process,
    .delivery-deliverables,
    .delivery-quality,
    .delivery-acceptance {
        padding: 40px 0;
    }

    .delivery-goals-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .delivery-deliverables-grid {
        grid-template-columns: 1fr;
    }

    /* 移动端流程时间轴优化 */
    .delivery-process-timeline {
        padding-left: 30px;
    }

    .delivery-process-timeline::before {
        left: 10px;
    }

    .delivery-process-step {
        padding-left: 20px;
    }

    .delivery-process-step::before {
        left: -23px;
    }

    .quality-item-desc {
        padding-left: 0;
    }

    .delivery-acceptance-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .delivery-goals-grid {
        grid-template-columns: 1fr;
    }
}

/* ============ 故障定位页样式 ============ */

/* 服务概述 */
.fault-overview {
    padding: 60px 0;
    background: #fff;
}

.fault-overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.fault-overview-card {
    background: #fff;
    border-radius: 16px;
    padding: 36px 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    text-align: center;
}

.fault-overview-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
    border-color: #1976D2;
}

.fault-overview-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #E3F2FD 0%, #E3F2FD 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.fault-overview-icon svg {
    width: 36px;
    height: 36px;
    color: #1976D2;
}

.fault-overview-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.fault-overview-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* 故障定位服务流程 */
.fault-process {
    padding: 60px 0;
    background: #ffffff;
}

.fault-process-timeline {
    max-width: 900px;
    margin: 40px auto 0;
    position: relative;
    padding-left: 40px;
}

.fault-process-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 30px;
    bottom: 30px;
    width: 2px;
    background: linear-gradient(180deg, #1976D2, #42A5F5);
}

.fault-process-step {
    position: relative;
    padding: 18px 0 18px 30px;
    margin-bottom: 8px;
}

.fault-process-step::before {
    content: '';
    position: absolute;
    left: -27px;
    top: 24px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid #1976D2;
    box-shadow: 0 0 0 4px rgba(25, 118, 210, 0.1);
}

.fault-process-step .step-content {
    background: #fff;
    padding: 18px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-left: 3px solid #1976D2;
}

.fault-process-step .step-content:hover {
    transform: translateX(6px);
    box-shadow: 0 8px 24px rgba(25, 118, 210, 0.12);
}

.fault-process-step .step-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 6px;
}

.fault-process-step .step-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

/* 核心服务内容 */
.fault-services {
    padding: 60px 0;
    background: #fff;
}

.fault-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.fault-service-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.fault-service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(25, 118, 210, 0.15);
}

.fault-service-header {
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    padding: 20px 26px;
    color: #fff;
    display: flex;
    align-items: center;
}

.fault-service-icon {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
}

.fault-service-icon svg {
    width: 24px;
    height: 24px;
}

.fault-service-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.fault-service-body {
    padding: 22px 26px;
}

.fault-service-body ul {
    list-style: none;
}

.fault-service-body li {
    padding: 10px 0;
    border-bottom: 1px dashed #e9ecef;
    font-size: 14px;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.fault-service-body li:last-child {
    border-bottom: none;
}

.fault-service-body li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #1976D2;
    font-weight: 700;
}

/* 常见故障类型 */
.fault-common {
    padding: 60px 0;
    background: #fff;
}

.fault-common-list-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #e0e0e0;
}

.fault-common-title {
    font-size: 20px;
    font-weight: 700;
    color: #1976D2;
    margin-bottom: 20px;
    padding-left: 20px;
    position: relative;
    letter-spacing: 0.1em;
}

.fault-common-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background-color: #1976D2;
}

.fault-common-list {
    list-style: none;
    padding: 0;
    max-width: 800px;
}

.fault-common-list li {
    font-size: 16px;
    line-height: 2;
    color: #333;
    padding-left: 24px;
    position: relative;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.fault-common-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background-color: #1976D2;
    border-radius: 50%;
}

.fault-common-list li strong {
    color: #1976D2;
    font-weight: 600;
}

/* 服务优势 */
.fault-advantages {
    padding: 60px 0;
    background: #ffffff;
}

.fault-advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.fault-advantage-card {
    background: #fff;
    border-radius: 16px;
    padding: 36px 28px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.fault-advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(25, 118, 210, 0.12);
    border-color: #1976D2;
}

.fault-advantage-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    box-shadow: 0 6px 18px rgba(25, 118, 210, 0.25);
}

.fault-advantage-icon svg {
    width: 30px;
    height: 30px;
    color: #fff;
}

.fault-advantage-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.fault-advantage-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* ============ 故障定位页响应式适配 ============ */
@media (max-width: 768px) {
    .fault-overview,
    .fault-process,
    .fault-services,
    .fault-common,
    .fault-advantages {
        padding: 40px 0;
    }

    .fault-overview-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .fault-services-grid {
        grid-template-columns: 1fr;
    }

    .fault-process-timeline {
        padding-left: 30px;
    }

    .fault-process-timeline::before {
        left: 10px;
    }

    .fault-process-step {
        padding-left: 20px;
    }

    .fault-process-step::before {
        left: -23px;
    }

    .fault-advantages-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .fault-overview-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   原文件 company-culture.html · 画幅重构样式（应用测试版 v2）
   ============================================================ */
.page-hero {
    min-height: 460px;
    background: linear-gradient(135deg, #1565C0 0%, #1976D2 45%, #42A5F5 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 80px 60px;
    color: #fff;
}
.page-hero::before,
.page-hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
}
.page-hero::before { width: 320px; height: 320px; top: -80px; right: -60px; }
.page-hero::after  { width: 180px; height: 180px; bottom: -40px; left: 15%; }

.page-hero .culture-hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.page-hero h1 {
    font-size: 56px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
    letter-spacing: 4px;
}

.page-hero p {
    font-size: 20px;
    color: rgba(255,255,255,0.92);
    max-width: 400px;
    line-height: 1.9;
    font-weight: 300;
    margin: 0 auto;
    text-align: center;
}

.page-hero .culture-hero-quote {
    margin: 36px auto 0;
    padding: 16px 0;
    border-top: 1px solid rgba(255,255,255,0.35);
    border-bottom: 1px solid rgba(255,255,255,0.35);
    color: rgba(255,255,255,0.95);
    font-size: 17px;
    font-style: italic;
    letter-spacing: 4px;
    max-width: 640px;
    text-align: center;
}